DE2641019B2 - Orthodontic appliance - Google Patents

Description

₄ , state of the art

There is an orthodontic device known (DE-PS 11 096 and DE-OS 19 64 207), which consists of a the head or neck of the wearer can be placed on a bracket, the tooth regulating force on the

w jaw transferring device and a resilient Tension member consists of the holder and the device transmitting the tooth regulating force with one another connects and which is biased in such a way that the holder and the tooth regulating force

-.-) transferring device moved towards each other would, wherein the holder, the tension member and the device transmitting the tooth regulating force form the ring surrounding the wearer's head.

This known orthodontic device has the

ίο Disadvantage that by springing back the tooth regulating force jaw-transferring device, usually located in the wearer's mouth, Injuries can occur if the device transmitting the tooth regulation force is removed from the mouth of the

'■ "· the wearer is pulled away and suddenly released, but is still connected to the tendon. In particular, injuries can occur when the tips the pre-rest that transmits the tooth regulating force

device are free from the tooth bases and the device is released as long as the tips are still in the mouth are.

Such a snapback can occur, for example, when the device is moved by the wearer even, by childish pranks or by getting the device arranged on the head caught on one fixed or moving objects.

task

The invention specified in claim I is based on the object of an orthodontic device of To create the type mentioned at the outset, in which the tooth regulating force is transmitted in the event of a deflection the device by an externally acting force in the absence of this externally acting force Snapping back of the device transmitted to the tooth regulating force is possible, so that injuries of the Carrier are prevented.

advantages

In the orthodontic appliance according to the invention, the rebound of the tooth regulating force on the jaw, leading to injury transferring device does not occur, since a deflection of the tooth regulating force exerted Device beyond a certain value that the tooth regulating force exerting device from the force generated by the tendon is relieved.

Advantageous further developments of the invention are described in the subclaims. In the configuration of the orthodontic device according to claim 2 becomes the device that exerts the tooth regulating force when a predetermined deflection is exceeded separated from the tendon, while in the embodiment according to claim 3 a locking of the parts takes place, so that in a simple manner a snap back of the device exerting the tooth regulating force prevented and thus injuries are made impossible.

Presentation of the invention

The invention is illustrated by way of example in the drawings. Show it

Figures 1, 2, 3 and 4 show various orthodontic appliances attached to the head of a patient in FIG Side view,

5 shows the connecting part of an extraoral head mount according to FIGS. 1, 2 and 3 on an enlarged scale Scale with broken away parts,

F i g. 6 the connecting part according to FIG. 5 in longitudinal section,

F i g. 7 shows a part of the connecting part according to FIG. 6 in enlarged scale in longitudinal section

F i g. 8, 9 and 10 the connecting part according to FIGS. 5, 6 and 7 in a different position,

F i g. 11 and 12 the connecting part according to FIGS. 6.7 or 9.10 in longitudinal section,

F i g. 13 the connecting part according to FIGS. 7.10 or 12 in another position,

F i g. 14 the connecting part according to FIGS. 6, 9 or 11 in a different position in longitudinal section,

F i g. 15 the connecting part according to FIGS. 5 to 14 in Longitudinal section in a disassembled state,

16, 17, 18 and 19 the connecting part according to the Fig. 5 to 15 in longitudinal section in each weather assembled state,

F i g. 20 the connecting part according to fig. 19 with a longer stroke in partial longitudinal section.

FIG. 21 shows another connecting part according to FIG. 5 to 19 in plan view,

22 shows the connecting part according to FIG. 21 in a disassembled state in a perspective top view,

23 shows another connecting part in a partial plan view,

F i g. 24 a further connecting part in partial plan view,

25 shows a connecting part according to FIG. 21 in another Embodiment in plan view,

F i g. 26 the connecting part according to FIG. 25 in a disassembled state,

27 shows a part of the connecting part according to FIGS. 25.26 in a different condition,

F i g. 28 the connecting part according to the F i κ. 25. 26 and 27 in partial perspective top view on an enlarged scale,

F i g. 29 the connecting part according to FIG. 28 in another position,

FIG. 30 shows a connection part according to FIG. 28 in another Embodiment in longitudinal section,

F i g. 31 a connecting part according to FIGS. 28 and 30 in a further embodiment in longitudinal section,

F i g. 32 another connecting part in longitudinal section,

F i g. 33 and 34 another connecting part in a perspective top view,

35 shows another connecting part in longitudinal section,

F i g. 36 and 37 a connecting part in another embodiment in a partial side view.

F i g. 38 the connecting part according to FIGS. 36 and 37 in a disassembled state in a perspective top view,

39 shows a further embodiment of a connecting part in plan view,

F i g. 40, 41, 42 and 43 another connecting part in different positions in the longitudinal section,

44 the connecting part in cross section according to 44-44 of FIG. 41,

F i g. 45 the connecting part according to FIG. 41 in the disassembled state in a perspective top view.

46 shows another embodiment of the connecting part according to FIGS. 25 and 26 in plan view,

47 shows the connecting part according to FIG. 46 in cross section,

Fig. 48 shows the connecting part in a longitudinal section 48-48 of Fig. 47,

F i g. 49 shows another embodiment of the connecting part according to FIGS. 46, 47 and 48 in side view,

F i g. 50 a connecting part with another tendon in plan view with parts broken away,

FIG. 51 shows the connecting part according to FIG. 50 in a longitudinal section,

F i g. 52 a connection part with another tendon in a partial plan view with parts broken away,

53 shows a preferred embodiment of a connecting part with parts broken away in a plan view,

F i g. 54 the connecting part according to FIG. 53 in a perspective top view

F i g. 55, 56 and 57 the connecting part according to FIG. 53 in a different position in plan view with parts broken away,

58 shows the connecting part according to FIGS. 53 to 57 in partial view

I ι g. > 4 cine orthodonuschc \ οι 'direction mn one I cdcispulc in perspective view.

I ι g Midie I cilerspule according to I ι g "> ^ς ι in longitudinal section.

I'ig. βΙ a softer Aiisfuhningslorm a instep member groove of an I edcrspiik in longitudinal section wcggcbmchcnen I rush.

lit 'h2 the tendon naih I'ig. hl in perspective View with broken lines.

I'ig. hi a device with a tendon I ederspule in longitudinal section.

According to the cig. I. 2 and 3 indicates the orihodontic Device a cxtraoralc device and a mtraoral or pressure dispensing device. By the miraoral arrangement of the orthodontic device pressure is exerted on the ancestor or the jaw. The extraoral holding device engages with Her reaction force on her head and neck. the extraoral and mtraoral setup are through one or two connecting parts, the a tendon for generating pressure on the mtraoral device have connected. The term "intraoral" as used in the description and claims encompasses one pressurizing device for cmc orthodontic Treatment beginning with the end of the I Inland jaw d. H. with the chin spine. cooperates.

The cMraor.ile facility according to I'ig. I instructs Mackenband I. a connector 2 for the intraoral device and a tension member 3. The exliaoral Establishment according to I i g. 2 shark a head mount 4 from a lower band 4.7. that is over the back of the head extends, and an upper band 4f>. that is about the Crown of the head extends. The ends of this dander are connected to one another and attached to the rear end of the Sp; inngltedes 3. According to E ig. J wise both the neck strap I .ils as well as the headgear 4 own tension members 3. which be of the same kind and both of which are connected to the connector 2

The force generated by your tendon 3 is always exercising a train on the connector 2 from. that a corresponding backward force on the intraoral or force exercising device that is connected to the connector 2. The through the neck tape t to E'ig. I generated force acts from the mouth backwards and downwards, whereas the head mount 4 according to Eig. 2 on the Connector 2 acts up and backward from the mouth. When using a Neck strap I and a head mount 4 according to E i g. 3 and when using your own tendon c 3 for the headrest and the neck strap result in certain forces of the desired size, whereby both the direction and the magnitude of the force exerted on the connector 2 via a large range is adjustable.

In fig. 4 several vectors are drawn in like a diagram, which indicate the different directions in which the force exerted on the connecting piece 2 can act. These directions are obtained by adjusting the tension members 3 of the neck strap and the head support and by the length of the connections between the tension members and the connecting piece. If the tensioning element of the head mount is only set to a small force, the force is mainly caused by the tensioning element 3 of the neck band 1. The tension exerted on the connecting piece 2 thus runs in the direction of the vector Fa. If, on the other hand, the tensioning element 3 of the neckhandc I aiii only a small amount of no force at all, then the tension exerted on the connecting piece 2 is mainly from the tensioning element 3 of the head mount 4 generated and runs in the direction of the vector Ib. If the forces generated by the tendon i of the neck hand I and the tendon 3 of the head mount 4 ei are approximately equal, the pull exerted on the connecting piece 2 runs in the direction of the vector Ic. which is approximately the bisector between the vectors / - '; / and Ib and which runs in the middle between the tension member of the neck band and the tension member of the headgear.

If the force generated by the tension member 3 of the neck band I is increased and / or the force generated by the tension member 3 of the head mount 4 is slightly reduced, the direction of the pull exerted on the connector 2 is somewhat lower, such as the vector I'd. If, on the other hand, the force generated by the tension member 3 of the head mount 4 is increased and / or the force generated by the tension member 3 of the neck band I is reduced, the direction of the train exerted on the connector 2 is somewhat higher, e.g. B. in the direction of the vector Fe. If the force generated by the tension member 3 of the neck band 1 is increased and / or the force generated by the tension member 3 of the head mount 4 is reduced below the equilibrium force, the tension exerted on the connector runs below the direction of the mean vector Fc. for example in the direction of the vector FJ or the vector Ff. On the other hand, the tensioning member 3 of the head mount 4 is adjustable in such a way that it generates a greater force, and 'or the tensioning element 3 of the neck band 1 is adjustable in such a way that it generates a smaller force, so that the direction of the pull exerted on the connecting piece 2 runs above the direction of the minimized vector Fc , for example in the direction of the vector Tc or in the direction of the vector Fp.

To adjust the size and direction of the train exerted on the connector 2 are the Tensioning members can be adjusted in a simple manner.

In addition, the snapback of the tendon should be controllable so that a sudden and violent moving back of the device parts. that exert the reaction force on the head or neck, and the device parts. which transmit the force to the intraoral device, is avoided. It is also necessary that several different parts of the device can be easily connected to one another and are detachable from each other, or automatically depending on the specified size of a solve relative movement of the parts to each other.

This task is achieved by a connection that the neck strap I or the head mount 4a. From connects to the connector 2, which transmits the tensile force to the intraoral device. According to FIGS. 5 to 18, the connection has a clamping member 3 with a band 5. which is connected in a suitable manner to the retaining straps for absorbing the reaction force, as shown in FIGS. I. 2. 3 and 4 and in dashed lines in FIG. 6. 9 and 14 is shown. The tensioning member connected to the band 5 is preferably seated in a tubular housing. According to the F i g. 5 to 19, the clamping member has a helical tension spring 7, which can be displaced in a housing 6. The tensioning member is connected to the connecting piece 2 by a lateral tension band 8, which has holes 9 equidistantly along its lengthwise direction, into which one at the end of the

Connection «Piece of disordered hook can be hung is. The holes in the drawstring allow hanging of the lliikens of the connector such that the suitable length of the connection / between the tendon and the connector for the one Patient is adjustable.

The drawstring 8 is connected directly to the leather 7 / u connect, the drawstring 8 is preferably connected to an initiate drawstring 10 that / wipe the Drawstring 8 and the spring 7 is arranged. That of the spring 7 / facing find the middle drawstring IO is preferred via a connecting hook II. tier consists of an elastic strip made of metal or plastic, with a sheet on the leather 7 connected. The shaft of the connecting hook II has an opening / to hang the Fndhakens tier Spring 7 on. The bent end of the connecting hook II is through a slot near the end of the : ";;: li.Tcn drawstring! 0 out.

The connecting hook 11 is not only used to connect the central tension band 10 to the spring 7. but also for additional control of the spring back. With normal use of the The device extends according to FIG. 6 the middle drawstring below a bracket 12. the above the Band 5 is arranged and is firmly connected to the band 5, which is preferably made of soft plastic consists. If the drawstring 8 and the central drawstring 10 are from the one shown in FIG. 6 position shown Pulled to the right, the connecting hook 11 approaches the bracket 12 to an upwardly curved leg 13 .- / iles connecting hook II with the bracket in Contact comes as shown in FIG. 9 is shown.

Since the connecting hook 11 is elastic. will the n-ieh curved legs 13.7 pushed down, so that the connecting hook 11 from the in F i g. 9 position shown in the position shown in Fig. 10 is pulled under the bracket. Around the connection hook 11 to compress in this position, the normal operating force can be exerted on the spring. The normal operating force can, for example, M (M) g be, and the required K.Mfi. around the I sheet from the in Fig. 9 into the position shown in FIG Pulling a position can for example be up to 1,800 kg 2J00 kg. The force required depends on the height of the bracket 12 and the connecting hook Il and the F.lastizitälswcrten des Ilaken and the handle.

If ¹ , the connecting hook II is in the position shown in FIG. 10, then only a small additional force is required to move the upwardly curved leg 13; / of the hook to the right behind the bracket in the position shown in FIGS. II and 12 to bring the position shown. If the hook is in this position and the tension on the tension band 8 and the central tension band 10 disappears, the force of the spring 7 is not sufficient to pull the hook back under the bracket 12. Therefore, the connecting hook 11 acts in the manner shown in FIGS. 11 and 12 shown position like a lock, which by fixing the spring 7, the snap back of the spring from the in F i g. 11 drawn position by the in F i g. 10 in the position shown in FIG. 6 position shown prevented.

The lock consisting of bracket 12 and leg 13a is always effective when the force exerted on the connecting piece 2 is large enough to move the curved leg Ma of the connecting hook 11 under the liiigel 12 into the π I ι g. ! I bring the same position / u. As a result, it is necessary to lay the connecting piece 2 / u, the tendon 1 and the head or neck band) over a predetermined distance. In order to free an animal-like relative movement / wipe the connecting piece, the tendon and the clamping member, a special force of certain size is required between the connecting piece and the tendon. The individual parts of the device are therefore arranged in such a way that the lock is automatically locked in response to a predetermined displacement of the connecting piece 2 / around the band 5.

The Flasti / iiatswerie ties material of the Verhitulungshiikens 11. the width and the thickness of the pre-tying hook, the dimensions of the connecting hook and the height of the upwardly curved leg M ₁ - / in relation to the height of the bow 12 can be selected in such a way that uci iUigei des i iakeus of tier in ί ι g. ν drawn position through tlie in Fig. 10 drawn position in tlie in! ■ 'i g. 11 drawn position automatically as a function of the predetermined size of an additional force between the miniature tension band 10 and the hand 5 arrives. In the position of the connecting hook 11 shown in FIG. 11, the force exerted by the leather 7 on the hook II is insufficient to pull the hook out to the left under the bracket 12; So let the force of the spring, in particular by additional pushing by hand, or only by pushing by hand, pulls the Ilaken out from under the bracket into the position shown in Fig. 10, from where the spring pulls the Ilaken into the middle. F i g. dog ? giveiiMi · Kii-Ilimg withdraws.

The band 5 preferably has a further bracket 14 at a distance from the bracket 12 beyond the bracket 12 of the Spring 7 seen from. The bracket 14 is less high than the bracket 12. So the connecting hook II does not by ilen bracket 14 / is iohbar. wi · .; this in tion Fig. II, 12 and ii is shown. To the middle drawstring 10 and to lock the bracket 14, stops 15 are provided at the left end of the central tension band, which are on both sides of the connecting hook II extend sufficiently far upwards from the narrow drawstring, like tlios in Fig. I} shown in.

During the movement of the connecting hook 11 from the position shown in FIG. b position / \\ the one in F i g. 9, the connection hook and part of the spring 7 grinds on the housing 6 limited to the bracket 12.

Although the lock from bracket 12 and legs 13.7 the Spring 7 in its furthest apart / bent position by preventing the movement of the middle drawstring 80 locked, the reaction force of the straps I or 4 is still the one with the Connecting piece connected by the tendon 3 are present. By exerting a great force on the device can therefore be exerted on the intraoral device, a force that to unintentional deformation of the device. It is therefore necessary that the bracket, For example, the neck strap 1 or the head mount 4, from the connector 2 automatically in

Il

Dependency on a larger j I ¹ · ground the force necessary for locking separately from one another, "the separating claw can, for example, be 3,200 kg.

The 'separation / wipe connector 2 and N.ickenb.iml or head support will wiivugsweisc by "separation of the tension member 8 effected by the tensioning member i. After the I ig. ^R) to 22 Separation on breileren FmIe 17 lies average tension band 10th this the Fnde the Anschlüge Ii bearing is abgcwandl. the further KmIe of the tension belt has a lliigel 18 inf. accommodates the tie rod 8, as shown in the I ι g. H to 12. links 18 of item Biigcl mean the Towering over the drawstring IO, a stop 19 is arranged on your drawstring. The stop 19 cooperates on the one hand with the hill 14 to limit the movement of the drawstring to the left / u to limit its movement to the left in relation to the mutating tension band IO.

The KmIo des facing away from your connector 2 lateral tension band 8 has a backward curved, releasable depending on the load Leaf spring 20. preferably made of metal. The feather extends through a slot at the KmIe of the drawstring 8. It has a curved shape, the The spring tongue 21 protrudes from the tension band. The distance between the dome bracket 18 and the stop 19 is so large that that the largest part of the length c'r leaf spring 20 in this distance is so that most of the animal Length of the spring tongue 21 between your bracket 18 and the stop 19 is arranged. as shown in FIGS. 4th 10. I I and 12 is shown.

The class of the curved spring tongue 21 and the height of the stirrups are such that the spring at If a force occurs on the connecting piece 2, your lateral drawstring 8 with a certain value, such as 3,200 kg, in the one shown in Fig. 15 reached compressed position. In the leaf spring in the position shown there under the bracket 18 pushed, the lateral tension band 8 can be moved slightly to the right from the position shown in FIG

1 ι g. 14 drawn released position are brought. The middle tension band IO thus remains by locking the connecting hook II or the stops 15 and read the bracket 14 firmly connected to the tendon 3, while the side drawstring 8 and the central drawstring 10 are completely separated from each other to to separate the connector 2 from the bracket, such as the neck strap I oiler of the head bracket 4..

In the Fig.t>. 9. ti and 14 is for the fruition of the intraoral device, an inner bracket 2; i of a double bracket is shown, the connecting piece

2 forms the outer bracket. According to FIG. 9, the inner tip Ib of the inner bracket 2.7 has a smaller diameter. so that the spit / c can be inserted into a socket 2c of a jaw / ahnhaltening 2t /. as shown in FIG. 6 is shown. If the connecting piece 2 is in the in F i g. 9 is drawn with an arrow bc / eiehnete direction, the tip Ib of the inner bracket 2.7 is pulled out of the socket of the molar hook 2c, while the inner bracket 2a remains in the mouth.

The distance between the connecting piece 2 and the tendon 3. as can be seen from the FIGS. 6 and FIG. 9 shown positions is very small, but it is sufficient for all movements of the tendon and the bracket that can occur due to tilting of the head. Is the head held straight or is it not ireneigl? so can il.is connector 2 in the in I 'ι g. 4 position shown by it in the direction of ties in F ι g. · Drawn arrow is pulled. You are undesirable for such manual movement. is the distance of the joint 2 from the teeth, as shown in FIG. 4 is shown. not big enough to pull the inner mound out of your mouth. If the connecting piece is released again, the force exerted on the rope drawstring 8 causes the spring 7 to rapidly move the double bracket into the inside of the mouth. However, the possible range of motion is very small, ie the stop 19 moves as far as the bracket 14, as shown in FIG. 4. If the inner tips 2b lead to parts of the mouth, no serious injuries can occur.

Before the connector 2 can be removed sufficiently far from the tendon .3 to the inner Bracket 2; / to pull out of the mouth is the lock from the leg 13 ,; at least by the in Fig. 10 drawn position in the in F i g. 11 drawn Position drawn. With such a movement, the leg 13.7 is under the bracket 12 in one locked position, as shown in FIG. 11 is shown. If the connecting piece is now released, it cannot snap back because the lock from bracket 12 and Leg I 3.7 the spring 7 in the in F i g. 11 drawn Locked position.

If, on the other hand, the connecting piece 2 is pulled further in the direction indicated by an arrow in FIG. 11, so it is drawn from those shown in FIGS Positions brought into position 13 in which the stops 15 and / or the leg 13.7 of the connecting hook Il with the bracket 14 is in Lingriff. At the Pulling the bracket 18 of the central tension band acts like a chile on the spring tongue 21, so that this is compressed and comes into a position below read bracket 18, as shown in FIG. 1J is shown. If the connecting piece 2 is pulled further, the spring tongue 21 slides out from under the bracket 18, so that the lateral drawstring 8 is separated from the central drawstring 10, as shown in FIG. That The connector is now free in the through -.new The direction indicated by the arrow in FIG. 14 is movable in relation to the clamping member 3.

Typical values of the force for effecting the locking of the lock from bracket 12 and leg 1.3.7 and for releasing the connection between bracket 18 and spring tongue 21 were found. Fs the device is designed in such a way that the connecting piece 2 and the clamping member 3 are locked in place by the lock when they are displaced differently and are separated from one another. It is also necessary that the connecting piece 2 and the clamping member 3 can be moved relative to one another over a greater distance when the clamping member is connected to a neck strap I than when the clamping member is connected to a head mount 4. before the lock or release occurs.

In a preferred embodiment one with A head mount connected to a clamping member 3 is the connecting piece 2 to the clamping member via a path can be displaced by 5 to 8 mm before the lock from the arm 13.7 comes into contact with the bracket 12, as shown in Figures 9 and! 0. These The device is shown in FIGS. 9 to 18 and in particular in FIG. 19. The parts of those shown in FIG Device are the same as the parts of FIG. 19th

device shown, however, is the length of the tape 5 between the stop 16 and the bracket 12 is slightly larger than the distance between the stop and bracket in FIG Fig. 19, Likewise is the length of the middle drawstring 10 between the stops 15 and the stop 19 is correspondingly larger. This allows the device 20 a way of 12 to 14 mm, opposite a path of 5 to 8 mm in the case of a device with a head mount, before the leg 13a with the bracket 12 comes into contact. The maximum expansion or contraction of the drawstring 10 and the The tendons to each other should not be larger than 16 mm or a change in force of 330 g.

The embodiment according to FIG. 20 is intended in particular for connection to a neck strap 1, to allow movements of the lower jaw and head.

The movement of the connector 2 and the tendon 3 after the leg 13a is engaged arrives with the bracket 12 for locking according to FIG should be the same movement that occurs when the connector and tendon were previously be locked. The additional movement of the lock can be, for example, 3 mm. To separate the lateral drawstring 8 and the central drawstring 10 by a relative movement of the tongue spring 21 and of the bracket 18 to one another according to FIGS. 11 and 12 in the Position in which, according to FIG. 13, the spring tongue and bracket 18 are separated, an additional travel of 4 mm or less should be provided.

This relative movement of the connecting piece 2 and the Spannglicdcs 3 of 3 mm over the normal Movement range also causes a lock by fixing the spring 7, whereby a releasable connection is provided. If the lock is omitted, e.g. B. by the bracket 12 is omitted, so is the Connect by moving 4 mm or less beyond normal range of motion solvable. If both the lock and the detachable connection are used, the lock and the Loosen the connection by moving the connecting piece and the tensioning member to one another over a range of approximately 7 mm over the normal range of motion of the connector and the tension glicdcs out.

The lock must be locked or the drawstring 8 separated from the tendon 3, or both, before the intraoralc device of the orthodontic appliance including the inner bracket 2n and inner tips 2b are fully withdrawn from the wearer's mouth, or preferably before the inner ones Tips are pulled out of the molar teeth so that the snap back of the connecting piece by the tendon cannot take place when the inner brackets of the double bracket are in such a position that the inner tips 2b can penetrate into an outer face. Therefore, the normal range of motion of the lateral tension band 8 and the tension member 3 relative to one another is so small that the locking to fix the spring 7 and / or the release of the tension band 8 from the tension member takes place before the inner brackets 2n and 2b completely out of the Mouth of the wearer are pulled out, as well as if the inner hill is not noticeably pulled further out of the mouth ills in the position shown in I i g. II.

Both locking and releasing the / ugbaiulcs 8 \ on the middle / umband 10 egg! an additional movement of the intraoral device to the tendon 3 beyond the normal movement range rich of these two parts. Since the lock and the detachable connection are arranged one behind the other must be the range of motion of the intraoral device be as small as possible with respect to the tendon, however, the range of motion must be large enough, un the tension band 8 and the tension member 3 by hanging the hook of the connecting piece 2 in a corresponding To enable the hole 9 of the drawstring 8 and also to allow sufficient movement of the lower jaw to the head, without there " the lock is locked or the tension band 8 and the tensioning element are separated from one another.

According to FIGS. 5, 6 and 7, the tension band 10 is approximately ir a position in the middle of its range of motion is pulled on the drawstring 8 until it is completely is relaxed. so the spring 7 pulls the middle tension bar 10 to the left until the stop {9 on the bracket 14 is applied. The other limit of the normal range of motion of the connecting piece 2 to the Tensioning member 3 is given when the upwardly curved leg 13a of the connecting hook Bracket 12 rests and begins to be pulled under the bracket.

In the in Fig.5. b and 7 drawn Normally the orthodontic device, the spring 7 of the tension glicdcs exercises a permanent and im essentially the same pressure on the double bracket 2 2a, which is directed into the interior of the mouth. Wit already carried out, it is necessary to follow the « Connector to adjust the force exerted according to the orthodontic treatment. Since clic biased spring 7 exerts a substantially predetermined pressure on the intraoralc device this can change the pressure. that different preloaded springs are used The tendon 3 according to FIGS. However, 5 to 22 is aiii different pressure values adjustable.

In order to set different pressure values of the spring 7 over a large setting range of any desired treatment pressure, the end of the spring 7 facing away from the connecting hook 11 is connected to a toothed band 22. The toothed band 22 carries silicone teeth 23 which are arranged one behind the other at the same distance along the longitudinal direction of the band 22 according to the increase in the force, this force increasing the tension and the force generated by the spring 7 and being changeable. without a noticeable change in the force due to the relative movement of the connecting piece 2 and the tendon 3 to each other during normal use. The end of the toothed band 22 removed from the spring 7 can be fixed by being pushed through a Hallc slot 25 in the band 5. The Hallcschlitz 25 is arranged from the leather 7 beyond the Hallcbügcls 24 in the band 5 ¹ .

The toothed band 22 and the retaining bracket 24, which overlooks the (land ^, form a pawl plane, the / υ Change in the Krall generated by tier leder 7 is adjustable. The leather cover LmIe des toothed H.indes is simply dinch the Hallebugel 24 pulled, so d.'lt simply by pulling one after the other the Sti'itzziihnc 21 mil dem Hallebugel in l'mgrifl hnn ^ bai are until before I cder 7 is appropriately spanned. to the

desired pressure of the orthodontic appliance to produce that acts on the intraoral device. The free end of the toothed belt is through the Holding slot 25 of the band 5 out.

According to FIGS. 16, 17 and 18, the from the in F ί g. 15 details of the existing device composed by the end of the central tension band 10 facing away from the BQgel 18 initially under the Bracket 14 and then pushed under the bracket 12, which are connected to the band 5. The connecting hook 11 is in the slot at the end of the middle Drawstring inserted, as shown in dashed lines in Fig. 16, and a hook of the spring 7 in the The eye of the hook 11 is attached

Then the toothed belt 22 with an eyelet in the Hook hung at the other end of the spring and the tubular housing 6 in the longitudinal direction over the toothed band and the spring pushed into the position shown in FIG. Now it will be free The end of the toothed band 22 is inserted through the bracket 24 and pulled to the left until the desired tooth 23 is in engagement with the bracket 24, so that the spring 7 generates the desired force The end of the toothed band is then inserted through the retaining slot 25, as shown in FIG. 18 is shown.

Finally, the end of the side tension band 8 facing away from the leaf spring 20 is under the bracket 18 of the middle drawstring 10 is pushed in the direction of the arrow shown in FIG. Sits the left end of the drawstring 8 securely between the bracket 18 and the stop 19, as shown, for example, in FIG is shown, the hook at the end of the connecting piece 2 is in a hole 9 of the drawstring hooked, the corresponding distance between the neck strap 1 or the headgear 4 and the intraoral device is adjusted so that the of the force generated by the tendon is transmitted in the desired manner to the intraoral device. That free end of the lateral drawstring that extends from the hole 9 in which the hook of the connector 2 is hooked. extends forward can be cut off.

When using limbs to limit movement, such. B. a lock, and / or a releasable connection of a drawstring of an orthodontic appliance must be the size of the movement that is possible. before the lock is locked or before the connection is released. Because the movements of the head and the upper jaw in relation to the neck, the movements of the lower jaw so in relation to the head and the movements of the lower jaw in relation to the neck, the drawstring 8 allow greater lengthways movement before locking the lock or connecting is released when the tendon is used in conjunction with a neck strap 1. A comparison of the Embodiments of FIGS. 19 and 20 show the change necessary to produce a larger one Movement range between the tension band 8 and the tension member for a neck band. μ

The contraction of the spring 7 to the left is through the interaction of the stop 19 on the central drawstring 10 mil of the right-hand ropes of the Hall bar 14 limited. According to the F i g. 19 and 20 has the stop 19 is the same distance from the bracket 14. *> so that the normal tensile force is transmitted through the feeler 7 via the tension band 8 to the connecting piece 2. The movement of the middle drawstring IO me reclils is according to the Fi g. 18 and 19 through the cooperation of Lock from the upwardly curved leg 13s and the left side of the bracket 12 is limited

The device of FIG. 19 is advantageous with a Head mount 4 can be used, and the device according to FIG. 20 is advantageously provided with a neck strap 1 usable, since according to FIG. 19 the bracket 12 is arranged closer to the housing stop 16 than in FIG. Therefore, in the embodiment of FIG. 20 the leg 13 'of the lock is moved further to the right than in the embodiment of FIG. 19. The The range of motion of the tension band 8 in relation to the tendon 3 can be changed simply by that the size of the distance between the stops 15 and the stops 19 of the drawstring 10 changed is and the bracket 12 is arranged further or closer to the housing stop 16, so that the End positions of the spring 7 can be changed.

According to Figure 9, the stops 15 are below the Crossbar of the bracket 12 can be pushed through. According to Fig.2! and 22 is the transverse web of a bracket 12 'to Reduce the deflection stiffened and near the end of the transverse web grooves are provided through the the stops 15 can be pushed through. The upwardly bent leg 13a of the lock acts with the stiffened crossbar of the bracket together and is pressed downwards, whereas the one at a distance to each other in the transverse direction on the central tension band arranged stops 15 through the grooves in the Slide the crosspiece of the bracket, but strike it at bracket 14. With this exception, the Embodiment according to FIGS. 21 and 22 of the embodiment according to FIGS. 5 to 20.

According to FIG. 23, a tension band 22 is held by a vertical anchor pin 26 which extends from the band 5 extends upwards. Her anchor pin engages in one of the holes 23 'which are spaced from one another in a row in the longitudinal direction of the tensioning band according to the desired tensioning force of the spring 7 one behind the other are arranged. The anchor pin 26 can be inclined towards the spring 7 or away from the spring 7.

On both sides of the longitudinal side of the tensioning band 22, angles 24 'are arranged alternately at a distance from one another, the free leg ends of which overlap the tensioning band, each angle being opposite on the other side of the tensioning band a wedge-shaped side stop 27 attached to the band 5 The free The end of each angle 24 'has a lower bevel inclined to the spring and to the base of the angle. These Arrangement of side stops and angles allows the free end to swing back and forth of the tension band 22 behind the anchor pin 26, first to the stop 27 located closest, then in opposite direction, with the tensioning strap over the inclined side of the side stop and under the with the side stop cooperating free leg of the angle 24 'slides and then into the opposite direction to over the inclined side of the next further side stop 27 and under the to slide free leg of the angle 24 'cooperating with this side stop.

Although several cooperating side stops and angles in series one behind the other along the Clamping band are arranged, ensure two consecutive Scitenanschlag and angle one secure hold for the end of the tensioning strap.

The facing end of the housing 6 of the spring 7 is in a centered position relative to the arrangement

Sejtenanscblägen and angles held by pins 28, which are fastened on both sides of the housing on the band 5 and protrude from the band 5. The special advantage This embodiment is that the end of the tensioning strap 22 in any position with The fingers can be fixed by holding the end of the tensioning strap in the desired position and as soon as it is above the sloping side of the first side stop 27 and below the free leg of the first angle 24 'is pushed, the desired Hole 23 'can be pushed over the anchor pin 26. The free end of the strap behind the first Holding device can then be pushed further in the same direction and then back until it comes with the next holding device is engaged

According to Fig.24, a single holding device is off a side stop 27 and an angle 24 ′ are provided, which cooperate with a retaining pin 25 through which the free end of the tensioning strap is pushed through after the end is first under the free one Leg of the angle 24 'of the first holding device was pushed. In this embodiment that is The end of the housing 6 is held by a clamping bracket 29.

According to the F i g. 25 and 26 is the middle part of the spring housing 6 by a wider clamping bracket 29 ' held, which is attached in the middle of the band 5. Such a clamp prevents the bending of the Housing by the force of the preloaded spring 7, especially if the housing is made of elastic Material is. This embodiment has only a single holding device comprising a side stop 27 and an angle 24 ". The free leg of this angle is longer than that for the part of the angle 24 ' according to Figures 23 and 24, so that the end of the Tension band held more reliably. ird, as by a Haluelement the in F i g. 23 shown Art.

The connection of the lateral tension band 8 with the tensioning member according to FIGS. 2.5 to 29 corresponds to Connection according to FIGS. 5 to 22 and has both a lock and a releasable connection. The solvable Connection has a curved tongue spring 21. which cooperates with a bracket 18, as in the Embodiment according to FIGS. 5 to 22 has been described. F i g. 27 shows the insertion of the drawstring 8 in FIG the middle drawstring 10, as was also shown in FIG.

According to the F i g. 25 to 29 is the curved leg 13a of the connecting hook 11 of the locking device according to the embodiments FIGS. 5 to 22 are replaced by a shaped support tooth 136. There are band 5 and the middle one Drawstring 10 according to the Γ i g. 25 and 26 made of plastic. The inclined side or sliding side of the support tooth 13i> cooperates with the left side of the bracket 12 ". The bracket 12" serves as a stop for the housing 6, if the drawstring 8 in the in F i g. 25 is pulled in the direction indicated by an arrow. The support tooth 13b and / or the bracket 12 ″ is flexible enough to pull the tooth under the bracket when a force is applied A certain size engages the tension band 8 and tries to separate it from the tension member 3.

When the support tooth 13 / j under the bracket 12 "on the the other side is drawn, as shown in FIG. 25 shows, the power of the spring 7 is not sufficient to make the straight or steep Side of the supporting tooth under the bracket. A paragraph 15 'at the widened end of the middle Drawstring 10. which is connected to the spring. that is because of the left side of the bracket 12 'when the support tooth J3 /> on the right side of the bracket is in order to prevent the central tension band 10 and the spring 7 from being expanded further with respect to the band 5. Of the

s support tooth 136 can be made by hand from under the bracket 12 " the locked position shown in Fig. 28, be pushed by the middle drawstring 10 is pivoted with respect to the bracket, as shown in Fi g. 29 The corners of the support tooth 136 are shown

ίο beveled in order to «target a wedge-like recess, so that the support tooth can be pressed against the right side of the bracket in order to force it up sufficiently and back under the bracket into the position shown in Fig.25 to bring drawn position.

According to F t g. 30, an upwardly curved spring 13c is formed in one piece with the central tension band 10 As with the previously described embodiments, sufficient pull causes the central one Drawstring to the right, as shown in FIG. 30 is shown a Wedge action between the bracket 12 "and the top domed spring 13c; so that either part or both of them yield enough to hold the domed spring to allow passage to the right through bracket 12 "to the locked position. The concern of the Paragraph 15 'at the end of the drawstring on the left side of the bracket limits the movement of the middle Drawstring and the tension member. To release the lock, the spring 13c is pressed down by hand and pushed to the left, so that with the help of the spring 7 the

JO arched spring backwards under the bracket 12 " pushed through into the position shown in Fig. 30 will.

In Fig. 30 the parts of the device are in one Position at the right end of the normal operating

J5 ches shown The left end of the operating range is determined by the abutment of the stop 19 on the right side of the bracket 12 ″. Although the stop 19 den Limited range of motion, the middle tension member under the bracket 12 "from left to right during the

Assembling the parts to be introduced when that Introduce before shooting the housing 6 over the Spring 7 takes place because, as shown in FIG. 30 shows the housing that

middle drawstring 10 lifts by the thickness of the housing wall.

According to Figure 31, the embodiment has a

Metal strip 11 ', which forms an upwardly curved spring 13c /, which differs from the embodiment of Connection hook 11 according to FIGS. 5 to 22 differs, and the end portion is distinguished by a Longitudinal slot of a middle drawstring to the

F i g. 25 and 26 extends.

The free end of the metal tire 11 'is down can be pressed into a recess 11 ″ in the longitudinal direction is arranged in the central drawstring 10, around the arched spring 13c / sliding under the bracket 12 "when the drawstring 10 is moved to the right. The movement of the middle drawstring 10 to the right is limited by the abutment of the paragraph 15 'on the left side of the bracket and the backward movement of the middle drawstring in the locked Position is determined by the application of the spring 13t / to the right side of the bracket 12 'prevented. The lock is by Hefäbdfücken the spring 13c / in the recess 11 ″ of the central tension band 10 released so that the spring can slide through under the bracket also the normal range of motion of the central tension band in relation to the tendon 3 between the in Fig. 31 drawn position and the left end position, in which the stop 19 with the right side of the

Bracket 12 "cooperates

Since the from the spring 7 in the different Tensioning members generated tensile force is changeable, markings are provided that the generated tensile force the spring in the various positions. Such markings are shown in FIGS. 5.8 and 21 to 27 They have a marking scale 30 and have corresponding graduations, which are indicated by the transparent housing 6 are visible to the end of the tension spring facing away from the tension band 8 in To bring agreement. According to the F i g. 5 and 8 is the nib for a 16 ounce working range intended. In Fig.2t the spring is for one 8 ounce working range provided. In Fig. 23 and 24 is the nib for a 32 ounce working range intended.

When using a tension member 3 with a neck strap in the form shown in FIG. 1 type shown occur relatively large movements and the pull at one end of the work area is different from the pull at other end of the work area. A certain range of motion is also required in order to achieve the Hang the hook of the connector 2 in the drawstring 8. After attaching the hook and when the head and lower jaw are held in the usual position, the right end is said to be the Spring 7 coincide with the zero mark 31, as shown in FIG. 5 is shown the right end of the spring 7 is correct coincides with the zero mark, the spring generates the tensile force that corresponds to the left end of the spring 3ü Corresponding mark 30 indicates when the spring is moved to the left of the zero mark 31 is the tensile force is a little less, as indicated by the minus sign at marking 31. When the right end of the Spring is pulled to the right over the zero mark, J5 like this the plus sign in Fig. 8 indicates that the spring produces a greater force than the one with the left end mark 30 corresponding to the spring.

In any case, the bracket 14, the stops 15 or the paragraphs 15 'and the stops 19 limit the -to Movement de. middle drawstring 10 with respect to the tendon 3 in the normal range of the elastic Move to a smaller area than the spring strap and the left end of the spring Change in the operating force is movable by the spring. The range of motion of the right end of the spring is usually 6 to 12 mm and not over 16 mm, whereas the left end of the spring is about one Range from 12 to 40 mm can be moved to the desired range of the connector 2 to adjust the force to be exerted.

According to FIG. 32, a lock is connected directly to the lateral tension band 8 instead of a central tension band 10, and no detachable connection is provided. The left end of the drawstring 8 covers the right end of the belt 5. The left end of the drawstring has an elevation 15 "which is directly connected to the right end of the spring 7. A stop 19 'is arranged on the belt 5, which cooperates with the left end of the tension member 8 bo to the backward movement of the drawstring relative to the strip 5 to limit the normal stroke in the extended least-position. the most extended position of the normal stroke is given when a Verricgelungs- * => / ahn 13c comes into engagement with the left side of the bracket 12, as is the case with the explanation of the Süitzzahnes I 36 and the BügcK 12 "de: embodiment according to the

F i g, 25, 26 and 28 has been described.

In the embodiment according to FIG. 32, a large tensile force on the connecting piece 2 moves the locking tooth 13e under the bracket 12 to the right-hand side thereof of the tension band 8 and the band 5. In this position, the spring 7 is fixed the drawstring 8 is pivoted in relation to the belt 5 in the manner indicated in the description of FIG the right end of the drawstring is pushed under the bracket 12 through from left to right.

A straight locking device according to FIGS. 33, 34 and 35 is in more ··; en parts of the Device can be used to adjust the necessary length of the drawstrings for the individual patient. According to FIG. 33 there is such a straight-line locking device for connecting a lateral tension band 8 and a central tension band 10 according to the embodiment according to FIGS. 25th and 26 used, wherein a releasable connection is also provided, which is automatically dependent releases from a predetermined large tensile force. The locking device has locking teeth 32 which are integral with the side drawstring 8. The locking teeth each have a bevel, with which they can be pushed through one after the other under the bracket 18 by opening the drawstring to the left the middle drawstring 10 is pushed in the direction indicated by the arrow.

Once the desired length of the tension band 8 has been reached and a steep side of a locking tooth 32 is located on the left side of the bracket 18, the left free end of the drawstring is cut off so that the Schni .stelle is next to the stop 19 and only one locking tooth is arranged on the left of the bracket. If a correspondingly large pull is exerted on the tension band 8, it engages with the left side of the bracket 8 located locking tooth under dsm bracket pulled through to the connection between the intraoral device and tendon.

According to FIG. 34 is an intermediate draw tape 33 at the end of the tape 5 between the tape 5 and a extra-oral device, such as a head mount 4. provided. On the headgear is a stop 34 is arranged such that when the intermediate drawstring is pushed through under a bracket 35 and reached the desired length, became, the free end of the intermediate drawstring can be cut off, the cut next to the Stop 34 is jo that only one tooth remains to the left of the bracket. If a correspondingly large force occurs, so the connection between the locking tooth 32 and the bracket is released.

Instead of the in FIG. 33 shown stop 19 or of the in FIG. The stop 34 shown in FIG. 34 is shown in FIG. 35 to the left of the bracket 18, another hill 34 'is arranged. If this embodiment is used for an intermediate drawstring 13, the bracket 34 'is secured by a stop 34 replaced. In this embodiment, the bracket 34 '

slightly higher than the bracket 18, so that the drawstring 8 can be pushed into the desired position more easily than a tooth can be pulled to the right under the bracket. Is the desired position of the side drawstring 8 and bends! is set, the left end of the tension band is cut off so that the connection between the draw band and the link carrying the stirrup is released by the slide through a tooth under the ironing pass.

The embodiment of a releasable connection in FIG. 36, 37 and 38 is for a device with Band S and an extraoral device such as B. a head mount 4 is provided. The band 5 has a short one Intermediate drawstring 33 ', which can be pushed under a bracket 35 in the direction of the arrow drawn in FIG. The band 3 carries a curved leaf spring 36, preferably made of a metal strip, which can be pressed together either directly by hand or by crimping the left end of the leaf spring is pushed against the right side of the bracket 35, as shown in FIGS. the curved leaf spring snaps into place on the left side of the bracket 35 when the left end of the intermediate drawstring 33 'is the one shown in FIG. 36 position shown at the end of a stop 34 has reached. If a greater force occurs between the clamping member 3 and the head mount 4, the connection between the Intermediate drawstring 33 'and the head mount according to FIG. 37 solved, since the spring 36 yields as it is in Connection with the spring 21 in Figs. 13 and 14 has been described.

In the embodiment according to FIGS. 39 to 45, the facing ends of the lateral traction band 8 and of the central tension band 10 'between the parallel side walls 37 which are connected by a S ^ web 38 overlap with each other. The lower sides of the side parts have protruding barbs 39 which engage through slots 40 arranged in the end of the band 5 facing the connecting piece 2. The side parts 37 are elastic so that their lower ends can be moved towards one another in order to allow the barbs 39 to engage under the belt 5 for secure fastening with the belt 5.

The end of a tubular housing 6 facing the side parts 37 has a bevel and on its underside a notch 41, which is provided with a nose 42 arranged on the band 5 to prevent the housing from rotating relative to the band 5 in The end of the one-piece central drawstring 10 'has a transverse rib 43, the one of which is the spring 7 facing side 44 is steeply inclined. This side of the transverse rib stands on a correspondingly inclined side

45 of a transverse rib 46 arranged on the lateral tension band 8 in engagement.

A hook at the end of the spring 7 engages in a recess of the central drawstring 10 'so that the Spring pulls the drawstring to the left, as shown in FIG. 40 to 43 is shown. There is no opposing force on the middle drawstring exercised, the middle drawstring is moved into the position shown in FIG. 40 drawn position and in this position by cooperation of the inclined side 44 of the transverse rib 43 with the right side of one of the side parts 37 connecting crosspiece 47 held. In this position of the middle drawstring it is that of the transverse rib

46 facing away from the end of the lateral drawstring between the side parts 37 below the web 38 and above the Cross rib 43 of the central drawstring 10 'can be pulled through.

as shown in FIG. 40 is shown.

If the transverse rib 46 of the lateral tension band 8 gets between the side parts 37, the inclined side comes 45 of the downwardly directed transverse rib 46 with the upper part of the inclined side 44 of the transverse rib 43 of the middle drawstring 10 'in engagement. If the side drawstring is pulled to the right, the Cooperation of the transverse rib side 45 with the transverse rib side 44 of the central drawstring 10 'the middle drawstring pulled to the right against the action of the spring 7, as shown in FIG. 41. The pressure between the inclined sides 44 and 45 moves the end of the bearing the transverse ribs 46 side drawstring to the top. The application of the upper side of the drawstring to the web 38 is limited such an upward movement.

On the top of the lateral drawstring 8 is at the end of the drawstring carrying the transverse rib the drawstring protruding upward, beveled nose 48 is arranged. The nose 48 comes with the right side of the web 38 engaged when the side drawstring and the central drawstring 10 'in the in Fig. 42 drawn position. The wedge action between the beveled sides 44 of the The transverse rib 43 and the beveled side 45 of the transverse rib 46 causes the lateral to snap into place Drawstring upwards into the one shown in Fig. 42 Position so that the beveled nose with the side of the Web hi is engagement, v / hen the force exerted on the connecting piece 2 and directed to the right ceases. By the engagement of the tapered nose with the web, the spring 7 is locked so that the cross rib sides 44 and 45, the beveled nose 48 and the web 38 form a lock.

If the force acting on the connecting piece 2 is greater than to achieve the position of the lateral tension band 8 and the central tension band 10 'shown in FIG. 42, the tension bands are moved into the position shown in FIG tension belt 8 comes free from web 38 so that au ^f due to the wedging action between the bevelled sides of transverse ribs 44 and 45, the end of the lateral traction band upwardly to the dashed lines in Fig.43 illustrated position passes. In this position, the side drawstring is separated from the central drawstring by releasing the detachable connection. When the transverse rib 43 is separated from the tensile force acting on the lateral tension band 8, the tension of the spring 7 causes the central tension band to snap back to the left from the position shown in FIG. 43 until the transverse rib 43 strikes the transverse web 47, like this is shown in Fig. 40. This snap back of the central tension band has no disadvantages, however, since the central tension band is almost completely enclosed by the band 5, the side parts 37 and the web 38

So that the inclined sides 44 and 45 of the transverse ribs 43 and 46 are reliably engaged with each other until the left end of the lateral tension band 8 has reached the right side of the web 38 are on the band 5 in one piece with this and the band 5 protruding upward rails 49 arranged from the end of the Spring 7 are formed inclined upwards. The ends of the rail are connected to one another by a web 50 connected, which extends from the band 5 upwards and the one stop for the end of the middle Tension band 10 'forms when it is in its limit position according to FIG. 43 was drawn.

2λ

According to FIG. 45, the device is assembled by first connecting the part with the side parts 37 and the web 38 to the band 5 and pressing the barbs 39 through the slots 40 'in the'> chamber between the side members 17 inserted in the longitudinal direction from right to left, as d in the F "i g. * illustrated to 43. now the Ilaken of the spring 7 is mounted in the recess of the central draw band and the housing is lifted over the spring 11 until its notch 41 is in engagement with the nose 42. The lateral drawstring 8 is then drawn in between the side parts 37 and under the web 38 from left to right, as shown in FIG. 40 is shown.

The spring 7 of the device according to FIGS. 39 to 45 ι ^r > can either be a pretensioned spring, or the initial tension of the spring can be adjusted by a device as shown in FIG. 39. One with that

l: _l- «~ tr_-j ι r? ι f ι ι ο ι ι: - »

flll! M.II 1.IKIt. Ut.1 I VUUI r ΎΚ.Ι L / UI1UCIIC3 * JjJtt * 1 1 IUfI I IU WCIAI holes 23 'which can be hung in a pin 51 arranged on the band S to fix the tensioning strap. To fix the housing 6 in the longitudinal direction, the left end of the housing has a hanger. which is arranged between the tension band and the band 5 and which is provided with a hole for hanging 2 ·> in the pin 51.

To adjust the tension of the spring 7 and thus to adjust the size of the spring on the Connecting piece 2 exerted force is by moving the tensioning strap 22 in the longitudinal direction and ic effected by engaging the pin 51 in a hole 23 'of the tightening strap. | e further tighten the strap is pulled to the left, the greater the tension of the spring 7 and the greater the tension on the Connector 2 tensile force exerted. The magnitude of the tensile force of the spring is indicated by markings 30 indicated, which coincide with the end of the tensioning strap 22. As stated in the description the F i g. 5, the markings are spaced 8 ounces apart and the markings can be read with the end of the strap 22.

It is also possible to make the markings on the strap itself next to the holes, such as it is denoted by 30 'in FIG. 39. Like the markings on the right-hand side of the strap ή indicate, such a tension band can be connected to springs of different tensile force. at In helical springs, the deflection of the force exerted by the spring is essentially linear. In particular, when the drawstring 22 is used in conjunction with w springs of different tensile force the holes are simply designated with the numbers 1, 2, 3, 4 and 5, as it is to the left of the holes in Fig. 39 is shown

The markings on the left side of the strap in Fig. 39 indicate the range of the magnitude of the force exerted on the connector 2. The markings are arranged so that the exact value of the tensile force on the connector is reached when the beveled nose 48 of the lateral tension band 8 is in line with the zero mark 3Γ of the web 38 when the nose is to the left of the zero mark. If the force exerted on the connector is slightly smaller than the value indicated by the markings 30 or 30 '. Conversely, if the nose is on the right side of the zero mark 31', the force exerted on the connector is slightly greater than the markings 30 or 30 ' Specify 3O ¹ .

The locking member 3 according to the F i g. 46, 47 and 48 is similar to that shown in Figures 25 and 26. Elin Lateral drawstring 8 ′ carries a tooth 136 of a lock and is connected to a spring 7. The other F.ndc of the middle drawstring 8 is connected to a connecting piece 2c by a turnbuckle 52. At this Device the connector is a J-shaped hook. The leg of the J-shaped flake extends under bracket 52 which are arranged one behind the other on a belt 5. The band 5 is from a neck baml 1 held. An auxiliary head mount 4c extending upward from the ears over the head is directly connected to the band 5 in order to prevent the neck band from sagging.

According to Figure 49, the clamping member 3 has a tubular housing 6 'with a preformed curvature rigid, transparent plastic, so that the housing without a clamping bracket 29 ', as shown in FIGS. 25 and "" GCJCigt

Housing a preloaded spring used or a spring over a large area in the longitudinal direction is tensioned by pulling out a strap 22.

According to the F i g. 50 and 51, a tension member 3 'has a helical compression spring for generating the tensile force acting on the intraoral device instead of the helical tension spring shown in FIGS. The compression spring 7 'is arranged in a housing 6 ″, and its right end is seated on an inner flange at the right end of the housing connected is. The piston rod 54 carries a piston cooperating with the left end of the compression spring T.

A band 5 'has holes 56 arranged one behind the other at a distance. whose distance from one another corresponds to the extension of the compression of the compression spring T in order to change the force generated by the compression spring which is exerted on the lateral tension band 8.

The housing 6 'has a hanger. which protrudes beyond the end of the housing facing away from the end on which the compression spring T is supported. The hanger has a hole which can be brought into register with one of the holes 56 of the strap 5 'by sliding the housing 6 "longitudinally across the band to change the length of the spring. The housing 6" is in relation to the band 5' in fixable in any desired position by inserting the leg of a headed pin 51 through the mating holes of the hanger of the housing and the strap 5 '.

According to FIG. 50 markings 30 ″ are made on the tape 5 'which are attached to the lateral tension tape 8 Specify the force exerted in ounces. The range of force is indicated by the marking line that is in correspondence with the right end of the housing 6 'The marking then points exactly the force exerted on the side drawstring when the piston 55 is in correspondence with a zero mark 31 ″. Has the side drawstring 8 the piston Pulled to the right of the zero mark, then the force exerted on the side drawstring correspondingly greater than the force which is in coincidence with the right end of the housing The marking line located 6 'results if the lateral tension band 8 is pulled to the left, so that the piston 55

is to the left of the Nullmaikierung Jl ", s ■ is the on the side drawstring 8 force is correspondingly smaller than that in accordance with the shows the right end of the housing 6 'located marking line.

In Fig. 50 an additional marking by the numbers I, 2, 3 and 4 is made along the various holes 56 of the tape 5 '. Such a marking can be used in conjunction with π ^: l springs T of different spring values to indicate the position of the compression spring.

The compression spring T is pretensioned and exerts a force on the lateral tension band 8 when the pin 51 is inserted through the left end of the housing 6 'and through the hole marked "I" in the band 5'.

The expansion of the spring T is then limited by the interaction of a shoulder at the connection between the lateral tension band 8 and its extension 8 'with the right side of a bracket 12 arranged on the band 5'. A stop of the heel on the bracket forms one end of the range of motion of the lateral drawstring. The other end of the range of motion of the lateral tension band is reached when the slightly inclined side of a support tooth 136 touches the left side of the bracket 12. A further movement of the lateral tension band 8 to the right pulls the support tooth under the bracket 12 through to the right, whereby the locking effect of the lock consisting of the bracket 12 and the support tooth 136 in the case of FIGS. 25 and 26 occurs.

According to FIG. 52, the force of a tensioning member 3 ″ acting on a lateral tension band 8 is generated by a flat spiral spring 7 ″ which is seated in a housing 57 arranged on a band 5 ′. The outer end of the coil spring extends through a slot 58 of the housing and is connected to an extension 8 ″ of the side drawstring 8. The drawstring 8 and the extension are similar to the embodiment described in FIGS at the end facing away from the slot 58 on a hanger projecting beyond the housing, which can be brought with a hole in correspondence with a hole 56 in the band 5 ', around which the spring 7 "is generated and is attached to the lateral tension band 8 via the extension 8" to change the acting force.

The band 5 'has markings next to the corresponding holes 56 to indicate the force generated by the spring 7 ″ and exerted on the lateral tension band 8. The force results from the position in which the pin 51 connects the housing with the band 5 'connects. Instead of labeling the markings and the holes 56 may be simply referred to with numerals, as has been in the apparatus of the F t g. described 50 and 51. A zero mark 31 acts with the end of the coil spring 7 "together such that, similar to the embodiments according to FIGS. 5 and 25, exactly the force generated by the spring and corresponding to the markings 30 'is displayed. The locking device used in this embodiment is the same as that described in the embodiments according to FIGS. 25, 26, 28, 29, 50 and 51. It has a bracket 12 arranged on the band 5 'and teeth 136 on the extension 8 ″.

The embodiment of the devices according to FIGS. 53 to 58 is similar to the embodiment of FIGS. 25 to 27. A tensioning member 3 has a helical spring 7 which is fastened on a band 5 in a

Housing 6 is arranged.

The housing 6 is prevented from moving laterally relative to the band "i" by pins 29 'which are arranged on both sides of the housing and protrude beyond the band 5. The free ends of the pins are curved towards one another in order to move the housing away from the band 5 However, the pins are sufficiently resilient that their curved ends can be spread apart to insert the housing between the pins by moving it across its length, rather than sliding it lengthways under the clamp 29 'as in the embodiment as shown in Figures 25 and 26.

The middle drawstring 10 is shorter than that in the embodiment according to FIGS. 25, 26 and 27, since the embodiment of the device according to FIGS. 53 to 57 does not have a locking device with teeth 136 . However, such a locking device can be provided. As shown in the embodiment according to FIGS. 25, 26 and 27 ge / eigtp. iu Hip Movement of the middle drawstring to the left is limited by the interaction of the stop 19 with the right side of the bracket 12 ″.

The embodiment of the device according to FIGS. 53 to 58 has a preferred detachable connection between the middle drawstring 10 and the side drawstring 8 '. This releasable connection is similar to the releasable connection shown in the embodiments according to FIGS. she has a bracket 18 ', which, seen from the spring 7, beyond a stop 19 lying end of the middle drawstring. The stop acts with a backward curved leaf spring 20 ', 21' together, which is arranged at the corresponding end of the lateral drawstring 8 '. The difference / wipe the two embodiments consists in the dimensions of the items and in the type. In which they cooperate.

The effect of the embodiment of the releasable connection according to FIGS. 53 to 58 is very accurate. she ensures the lowest release voltage and the lowest release movement between the side Drawstring 8 'and the middle drawstring 10, the separation of the drawstrings taking place quickly and safely. So that the predetermined release voltage between the tension band 8 'and the tension band 10 can be easily adjusted is, is preferably the size of the trigger voltage depending on the characteristics of the leaf spring 20 ', 21'. Hence the bracket is 18 '. the one with the leaf spring cooperates, very rigid.

According to FIG. 54, the bracket 18 'has a thick web, which is firmly connected at its ends to the widened end 17 of the central tension band 10 by upwardly tapering legs 57. Furthermore, the strength of the widened end of the central tension band is increased by side walls 58 which connect the ends of the stop 19 and the tapered legs 57 of the bracket 18 '.

The leaf spring 20 ', 21' according to FIG. 58 simultaneously has the properties of a free leaf spring leg and a semi-elliptical spring leg. A flat lower part 20 'of the leaf spring is inserted through a slot in the lateral tension band 8' so that the flat lower part of the spring is under the underside of the end portion of the lateral tension band 8 ', while the curved portion of the leaf spring is above the other side, ie over the top of the side drawstring is arranged. The length of the widened

Section 17 of the mutated drawstring IO is almost equal to the length of the Federabohnitten 20 'and 21'.

The dimensions of the connecting parts and the properties of the spring 20 ', 21' are very precise, so that in the precisely known pretensioned state of the spring occurs during assembly, as shown in FIGS. j4 and 55 is shown. The lateral drawstring 8 'is connected to the central drawstring 10 in the same way as in the embodiment according to FIGS. 25. 26 and in particular Π was described. During assembly, the “end of the lateral tension band 8 'is inserted under the bracket 18' and pushed from left to right, as shown in FIG. 54 and 55 is finished position of the parts with respect to one another. ι,

During the movement of the lateral drawstring 8 'in the direction indicated by an arrow in FIG. 53, the curved section 21' touches the bracket 18 'before the end of the lateral drawstring 8' niipn γρρπtc ΓιΚί ^ ρ rl <* r \ A fic £ rt! 3 ^1T ! 9 "CiSriii 'LiΓΤΪ C *« 5 * t lateral drawstring 8' in relation to the central drawstring 10 'from the position shown in Fig. 53 to the position shown in Figs. 54 and 55 To bring, it is necessary that the free arm of the curved spring section 2 \ 'is pressed so far down, _><-, until its free end rests on the lateral drawstring.

If the lateral drawstring 8 'is moved to the right with respect to the central drawstring 10 from the position shown in FIG. 53 shown Pulled position, the bracket 18 'exerts a wedge force on the right inclined end of the curved spring in Cut out 21 'to compress this end so that the side drawstring can be moved to the right. It touches the left end of the free curved spring section 21 'the top of the side Drawstring 8 'before the side drawstring white enough r. was pulled so that its end rests against the right side of the stop 19.

The additional required movement before engaging the end of the lateral traction band 8 'on the right side of the stop 19, as is illustrated w in Fig. 55 causes the arc of the curved spring portion 2Γ is compressed by a certain amount. In this position the spring is preloaded with the force necessary to keep the curved section of the spring in contact with the side drawstring 8 'and, since the section of the spring is cantilevered, additional to the force required to compress the arch of the curved spring portion to allow the side drawstring to move relative to the central drawstring to snap the parts together. The parts are held in the position shown in Fig.55 position to each other, even if the lateral force on the tension belt 8 'no longer engages Further movement of the tension band to the right side with respect to the central draw tape may occur, therefore, only when a greater force on the tension straps exerted the force that is required to move the parts into the parts shown in FIG. 55 to bring the position shown. ho

The force required on the side drawstring 8 'to move the side drawstring in relation to the central drawstring is greater than the force exerted on the side drawstring 8' by the spring 7 in the normal working range of the device. The force which tensions the spring 7 from the position of the central drawstring 10 shown in full lines to the position shown in dashed lines, with a shoulder 15 'engaging the left end of a Hiipcls 12 ", is not sufficient to separate the lateral Pull band 8 'from the middle pull band 10. If a force is exerted on the side pull band 8' which is sufficiently great to bring the side pull band and the middle pull band ir to the position / u shown in FIG When the spring bracket 2Γ is depressed, the curved spring section can slide under the bracket 18 'and the side drawstring can be moved further to the right in relation to the central drawstring, as shown in FIG.

During this further movement of the lateral pull strap 8 'to the right, the middle pull strap is at Movement of the lateral drawstring 8 'due to the interaction of the shoulder 15' with the left side of the bracket 12 'retained, as shown in FIG. 56 is shown. Is the arch of the curved FcdcrabscriniitCS 25 äüigFünd ucp wedge wii * iCiiug ucS The bracket 18 'to the one shown in FIG. 56 compressed position shown, so the side drawstring moved slightly to the right from the position shown in FIG. 56 to the position shown in FIG. 57 in which the lateral drawstring 8 'is separated from the central drawstring 10.

The range of motion of the rope drawstring 8 ′ in relation to the central drawstring 10 differs from that in FIG. 55 The position shown up to the separation of the drawstrings is very small, for example 3 to 7 mm. For the usual In orthodontic applications, the force exerted by the spring 7 is in the range from 200 g to 400 g. the corresponds to a range from 0.230 kg to t.360 kg. The curved spring portion 21 'has a bias of i, 730 kg, if the parts in the Fig. 55 position shown, this means that a force constantly exerted on the lateral tension band 8 'of 1.730 kg cannot pull the side drawstring to the right in relation to the central drawstring 10.

The spring 20 ', 21' can be selected in such a way that that a tensile force of 2.270 kg constantly exerted on the side drawstring 8 'relates to the side drawstring to the middle drawstring 10 from the one shown in FIG. 56 position shown until the connection is released Suddenly occurring, much greater force therefore causes the lateral tension band 8 'to move right from the position shown in Fig. 55 to Separation of the side drawstring from the middle drawstring. The type of spring 20 ', 21' is used to adapt of the device to the desired application determined by selecting the separation force.

According to FIG. 54, the holes 9 'in the side drawstring 8' are larger than the holes 9 in the side drawstring 8 according to the embodiment according to FIGS. 25 to 27, in order to facilitate the hooking of the connecting piece 2 in the lateral drawstring. Furthermore, the holes for adapting the device to the individual patient are numbered.

The embodiment of an orthodontic appliance according to FIGS. 59 to 63 has a negator as a tension member. A negator differs from a coil spring in that it provides constant tension regardless of its longitudinal position. The negator has a freely curled limited coil made of flat, elastic spring steel or stainless steel, which is arranged in a curved manner, and tries to unwind over the active area of its length. By choosing the width or the thickness

or both of the strip, the tension force generated by the strip is variable. The thicker the Stripe and the wider the stripe, the greater the force exerted by the spring coil

According to FIGS. 59 and 60, the device has connecting links for connecting a neck band according to FIG. 1 or a head mount according to FIG with an intra-oral device. A strap 5 is connected to the neck strap or a headgear. A side drawstring 8 'has holes 9' for connection to the connector 2. The negator has one Spring coil 59. A tab 60 is through an S-shaped hook with a hole in one end middle drawstring 10 connected. The drawstring 10 is of the type shown in FIGS. 53 and 55 to 57 shown the The drawstring extends below a bracket 12 "which is connected to the strap 5. The middle drawstring carries the stop 19 and the bracket 18 'on the widened end 17 of the central drawstring upwardly tapering legs 57 are attached to side walls 58 connecting the ends of the stop 19 with the tapering leg 57 in the embodiment according to FIGS. 53 to 57 described Art.

As in the embodiment according to FIGS. 53 to 57 has a leaf spring 20 ', 2Γ a flat lower part 20' and a curved portion 21 'extending through a slot of the side drawstring 8' so that it forms a releasable connection with the bracket 18 '. The spring and the bracket cooperate in such a way as in the embodiment according to FIGS. 53 to 57 has been described. The parts are apart separated when the mounting parts, for example the neck strap or the head mount, have a removed from the intraoral device by a certain amount. This is how a paragraph 15 'of the middle one acts Drawstring 10 with the left side of a bracket 12 'together. As shown in dashed lines in Fig. 60 is shown. A further movement of the lateral drawstring 8 'to the right in relation to the belt 5 pulls the Spring 2 Γ under the bracket 18 ', so that the side drawstring 8' is separated from the central drawstring, like this in dashed lines in FIG. 60 is shown.

After the pulling band 8 'has been separated from the right end of the middle pulling band 10', it winds up the spring reel 59 to pull the middle drawstring 10 to the left until the stop 19 in contact with the right side of the bracket 12 ". The winding of the spring coil is limited by the spawn 60, which cooperates with a arranged on the belt 5 housing 62 so that the spring coil remains in the wound position.

In the embodiment according to FIGS. 61 and 62 is the tendon with a spring coil with the end of one lateral drawstring 8 connected, which has a locking device in the embodiment according to FIGS. 28, 29, 46, 47 and 52 shown type aufweisi, but none has detachable connection. In this embodiment, the side drawstring 8 carries near his with one S-shaped hook 61 with the tab 60 of the Fedcrspiile connected end a retaining tooth 136. The Haltczahn has an inclined or inclined surface, the Bracket 12 "is directed and which extends from the band 5 upwards and below the bracket of the lateral drawstring 8 extends. This locking device works in the the embodiment according to FIGS. 25 to 29 described type. The holder, such as the neck strap or the head holder.

and the intraoral device apart, so the retaining tooth is pulled under the bracket 12 ″ from the left to the right. The movement of the bracket and tendon from each other through the interaction of the Paragraph 15 'at the widened end of the drawstring 8 with the left side of the bracket 12 "limited occurring force tries to separate the holder and the intraoral device from each other, pulls the

■ ο spring reel the side drawstring 8 to belt 5. One however, such movement is due to the cooperation of the steep side of the retaining tooth 136 with the right side of bracket 12 ″. Therefore, the spring coil is partially unwound held by the lock.

The steep side of the ratchet tooth 136 can be released from the right side of the bracket 12 ″ are by the lateral tension band 8 in the lateral direction in the embodiment according to FIG. 29 type shown is pivoted. The tooth can then be pushed to the left under the bracket 12 ', as shown in FIGS. 61 and 62 to the Bring the spring coil into the wound position shown in solid lines in Fig. 61. That Winding up is limited by a shoulder 63 of the side drawstring 8, the side an extension 8 "protrudes over a reduced cross-section on which the tooth 13ό is arranged. Thus, the device for Reconnection in the orthodontic appliance

3 «ready

In the embodiment according to FIG Tensioning member on a spring coil of the same type as in the embodiment according to FIGS. 59 to 62 was shown. In addition, this embodiment has

. «A locking device essentially like it was described in the embodiment according to FIGS. 61 and 62, and also a releasable connection, so that the device with the one shown in FIGS. 25 to 27 is comparable to the device shown. In particular is the releasable connection of that in the embodiments according to FIGS. 53 to 57, 59 and 60 shown. Since the mode of action of the lock and the releasable connection already in the embodiments according to the Fig. 25 to 29, 61 and 62 and in the Embodiments according to FIGS. 53 to 57. 59 and 60 is a further description of the Locking device and the releasable connection superfluous.

It should be noted that movement of the

so band 5 in relation to the side drawstring 8 'in the longitudinal direction of the side drawstring that of the The force shown in the spring coil 59 does not change noticeably. The locking device consists of a retaining tooth 136 and a Bracket 12 "is releasable in terms of features Connection of spring 21 'and bracket 18' determined so that the tooth 136 is pulled under the bracket 12 'to the right and the shoulder 15' with the left side of the bracket 12 "cooperates to create a locking effect cause before the leaf spring 21 'to the right under the bracket 18 'to release the connection between the lateral tension band 8' and the central tension band 10 is pulled.

Therefore, the locking device of the connection acts after ('Fig. 23. without the lateral tension band 8' from

M middle drawstring IO is separated. Became the side Drawstring 8 'separated from the central drawstring 10, so the separation can only take place after locking the locking device, so that the slcile side of the tooth 1} /' on

3!

the right side of the bracket 12 "is applied to the To prevent retraction of the central drawstring 10 to the left, as shown in Fig. 63, the Stop 19 on the right side of the bracket 12 "rests. To establish the connection for use the middle drawstring is pivoted, as shown in Fig. 29

shown, or simply slid to the left to select the To move the tooth back under the bracket 12 ", releasing the lock. After that, the side Drawstring 8 'connected again to the central drawstring, as in the embodiment according to the F i g. 53 and 55 is shown

In addition 12 sheets of drawings

Claims (41)

Patent claims: 1. Orthodontic appliance, consisting of a bracket that can be placed on the head or neck of the wearer, one for the tooth regulation * - force on the jaw-transmitting device and a resilient tendon that holds the bracket and connecting the tooth regulating force transmitting device to one another and that in such a way is biased that the holder and the tooth regulating force transmitting device are moved towards each other, with the bracket, the tendon and the tooth regulating force transmitting device form a ring surrounding the head of the wearer, characterized by one arranged in the ring Safety connection made of two parts (18, 21; 18 ', 21'; 18,32; 32,34 '; 32,35; 35,36; 43,46; 12,13a; 12', 13a: 12 ", 136; f 2", 13c; 12 ", 13t /; 12,13e; 12,136; 38, 48), which occurs when a force acting on the ring from outside is greater than that in the ring acting, predetermined force is automatically counter to the effect of the tension member (3) generated Force cooperate with one another in such a way that the device (2, 8) transmitting the tooth regulating force is affected by the force generated by the clamping member is relieved 2. Apparatus according to claim I, characterized in that the cooperating parts (18,21; 18 ', 2Γ; 18, 32; 32, 35; 35, 36; 43, 46) the; <» Safety connection when such an external force occurs. 3. Device according to Anipnich 1, characterized in that the interact! len parts (32,34; r> 12,13a; 12 ', 13a; 12 ", 13i>; 12", 13c; 12 ", 13c /; 12, 13e; 12, 136; 38, 48) of the safety connection automatically when such an external force occurs are interlocked. 4. Device according to one of claims I to 3, characterized in that one of the two cooperating parts of the safety connection a bracket (12 ", 18) and the other one Is the locking tooth (136, 32) which, when the relative movement of the tooth regulating force 4 ~> transmitting device (2) from the I! aliening (I, 4) away under the bracket by movable isi. 5. Device according to claim 4, characterized in that the Vcrriegclungszahn (11h) inclined, has a with the yoke (12 ", 18) zusammenwirken- ^r> <> de surface. 6. Apparatus according to claim 4, characterized in that the upper, lateral corners of the locking tooth (13b) are chamfered. Vi 7. Device according to one of claims 1 to 3, characterized in that one of the two interacting parts of the safety connection is a bracket (18) and the other is a curved spring (21) which, when the ^{W |} the tooth regulating force transmitting device (2) from the holder (1, 4) away linier through the hill is movable. H. Device according to Claim 7, characterized in that the curved I cd'-r (21) has a free leg. 9. Device according to one of the Λν \ | ιιίμ he ^ or H, gekenn / «ichnel dun Ii i-men Λ · <■ 'hl.ig (14) / to hold the curved spring (21) in the pretensioned position in engagement with the bracket (18), 10. Device according to one of claims I to 9, characterized in that the spring (21) counteracts the separation of the interacting parts of the safety connection and from the bracket (18) and / or the stop (19) is held in a pretensioned state, the tension of which is less than is the tension of the spring as the two interacting parts move relative to one another 11. Device according to one of claims 1 to 10, characterized in that the brackets (1, 4) have a neck band (1). 12. Device according to one of claims 1 to 10, characterized in that the holders (1, 4) have a head mount (4). 13. Device according to one of claims 1 to 12, characterized in that the safety connection between the holder (1, 4) and the Tension member (3) is arranged 14. Device according to one of the speeches! to 12, characterized in that the safety connection between the tooth regulating force transmitting device (2) and the clamping member (3) is arranged. 15. Device according to one of claims 1 to 14. characterized in that the safety connection has a locking device (13a, 13Z> ^ for automatic holding of the by a relative movement of the cooperating parts to each other expanded tendon (3) in the expanded state. 16. Device according to one of claims 1 to 3, characterized in that the safety connection has a releasable locking device for locking movement of the interacting parts has to each other 17. Device according to one of claims 1 to 16, characterized in that ^ in the connecting drawstring (8) with which the tooth regulating force transmitting device (2) is connected and that the connecting drawstring in a line in Having spaced one behind the other arranged locking teeth (32) with the clamping member (3) for Change in the position of the tendon in relation to the connecting drawstring can be brought into engagement. 18. Device according to one of claims I to 17. characterized in that the tendon (3) a band (5), a «spring arrangement (7) and an adjusting device (22, 23, 23 ', 26), which on the band for adjusting the preload range of the spring arrangement is displaceable and fixable, that the tooth regulating force transmitting device (2) is movable with respect to the spring arrangement and that stops (15 ', 12 ") for Limitation of the movement of the tooth regulating force transmitting device and the Spring arrangement are provided relative to one another, this range of motion being smaller than that Including the adjustment device. 19. The device according to claim 18 characterized in that the spring arrangement (7) is elongated, that one end of the Spring arrangement with the tooth regulating force transmitting device (2) and that the other 1st end of the spring arrangement with the adjusting device (22) for adjusting the spring preload connected is 20. The device according to claim 18, characterized in that the spring arrangement as Helical spring (7) is formed, 21. Device according to one of claims 18 to 20, characterized in that the adjusting device (22, 23 ', 26) for setting any preload of the helical spring (7) with the Has a spring-connected tensioning strap (22) provided with recesses (23 ') and that the Tensioning member (3) a retaining pin (26) which can be inserted into one of the recesses in the tensioning strap, and locking members (24, 24 ', 24 ", 25) which with the portion facing away from the spring of the Tension band can be brought into engagement beyond the hook pin. 22. The device according to claim 21, characterized in that the locking members (24, 24 ', 24 ^V ') have a slot (25) for receiving a portion of the tensioning strap (22). 23. The device according to claim 21, characterized in that the locking quality angle (24 ', 24 ") with free-armed SchenLiln to Receipt of a section of the tensioning strap (22) at the end of the facing away from the tensioning element (3) Have helical spring at a distance from the retaining pin (26). 24. The device according to claim 23, characterized in that the limbs ending with free arms the angle (24 ') have a lower bevel. 25. The device according to claim 23, characterized in that the limbs ending with free arms the angle (24 ') have a lower bevel from the one facing the retaining pin (26) Side and away from the foot of the corner. 26. The device according to claim 21, characterized in that the locking quality is two at a distance, in the longitudinal direction on the belt (5) in a line one behind the other (24 ') have with free-armed legs that are directed opposite to each other transversely to Tension band (22) run. 27. Device according to one of claims 21 to 26, characterized in that the retaining pin (26) formed girade essentially in the longitudinal direction is. 28. The device according to claim 18, characterized in that the adjusting device is a linear, toothed tension band (22, 23) which is connected to the spring arrangement (7). 29. The device according to claim 18, characterized characterized in that the spring arrangement (7) has a helical compression spring (7 '). 30. Device according to one of claims 21 to 29, characterized in that markings (30) are arranged to indicate the area of the preload of the spring (7, T) . 31. The device according to claim 18, characterized in that the spring arrangement (7) has a spiral band spring (7 ") is. J2. Device according to one of Claims 18 to 31, characterized in that markings (30) for indicating the various prestressing areas of the leather arrangement (7), which can be adjusted by the setting devices (22, 23, 23 ', 26), and a zero mark (Jl) are provided for displaying the set preload range 33. Apparatus according to claim 20, characterized in that the helical, prestressed Tension spring (7) is surrounded by a housing (6) and that the housing to prevent of twisting is curved and rigid 34. Apparatus according to claim 20, characterized in that the helical spring (7) is surrounded by a housing (6) and that holding devices (28,29,29 ', 29 ") for holding the Housing are provided to prevent the housing from moving, 35. Apparatus according to claim 34, characterized in that the holding devices as Clamping brackets (29,29 ') are formed. 36. Apparatus according to claim 34, characterized in that the holding devices as Pins (28.29 ") are formed. 37. Apparatus according to claim 36, characterized in that the free ends of the pins (29 ") are designed curved towards each other. 38. Device according to one of claims 1 to 37, characterized in that the two interacting parts of the safety connection two elongated drawstrings (8, 10, 10 '), which by a longitudinal displacement of the two cooperating parts are engageable. 39. Apparatus according to claim 38, characterized in that the tension straps (8, 10) are locking devices (18,32). 40. Apparatus according to claim 39, characterized in that the locking devices (18,32) a bracket (18) on one drawstring (10) and a number of on the other drawstring (8) have arranged locking teeth, these teeth successively with the bracket through a longitudinal displacement of the two tension straps can be brought into engagement. 41. Device according to one of the claims' to 17, characterized in that the clamping member (3) has a spring coil (59).