TW201511739A - Implant driver, implant - Google Patents

Abstract

The implant driver is equipped with a centering shaft portion of the taper-shaped outer diameter is reduced toward the distal end, and a rotation transmission shaft portion formed in non-circular. The centering shaft portion is fitted into a fitting hole of the tapered shape whose inner diameter is reduced toward the depth direction is formed in the center hole of the fixture. The rotation transmission shaft portion is fitted into a rotation preventing hole formed in the center hole of the fixture to prevent rotation of the abutment is connected to the fixture.

Description

Implant implants and implants Field of invention

The present invention relates to an implant implant and implant. For example, when the root of the permanent tooth is missing or the like, the dental implant and the implant implant are embedded in the tibia.

The present application claims priority from Japanese Patent Application No. 2013-105377, filed on Jan.

Background of the invention

Implants embedded in the body (especially dental implants) are attracting attention. The dental implant is used to insert and fix the implant into the hole provided in the alveolar bone when the root of the permanent tooth is lost due to tooth decay or defect.

The dental implant is generally composed of an implant fixed to the alveolar bone, and abutment teeth screwed to the implant and capable of mounting an artificial crown.

When the alveolar bone is embedded in the implant, an instrument called an implant implanter or the like (an implant implanter) is used.

The implant implanter has a non-circular rotation transmitting shaft portion formed in a polygonal shape or the like at the front end thereof. The rotation transmitting shaft portion is fitted to the rotation transmitting hole portion formed in the center hole of the implant, whereby the implant can be implanted The rotation of the device is communicated to the implant.

Advanced technical literature Patent literature

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-047621

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2004-202049

Summary of invention

In the conventional implant implant device, the rotation transmitting shaft portion is fitted to the rotation transmitting hole portion of the implant. Therefore, when the implant is rotated and embedded in the alveolar bone or the like, the posture of the implant tends to be unstable. When the implant implant is inconsistent with the central axis (rotation axis) of the implant, the implant will be shaken and buried in the bone. Therefore, there is a problem of excessive burden on the human body.

It is an object of the present invention to provide an implant implant and an implant that can stabilize the posture of the implant when the implant is embedded in the bone.

A first embodiment of the implant implant of the present invention is an implant implant, which is inserted into a central hole of the implant when the implant is embedded in the bone to convey The driving force of the driving source includes: a collimating shaft portion which is a taper whose outer diameter is reduced toward the front end; and a rotation transmitting shaft portion which is formed in a non-circular shape, and the collimating shaft portion is fitted into the center hole a tapered fitting hole portion whose diameter is reduced in the depth direction, wherein the rotation transmission shaft portion is fitted into the center hole to prevent connection to the abutment of the implant body The rotation of the rotation of the teeth prevents the hole portion.

A second embodiment of the implant implant of the present invention has a variable diameter portion having an outer diameter changeable in the first embodiment, wherein the variable diameter portion is engaged in the center hole for Preventing the abutment teeth from falling off and preventing the falling hole portion.

According to a third aspect of the present invention, in the first or second aspect, the collimating shaft portion and the rotation transmitting shaft portion are formed at positions different in the axial direction.

According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the collimating shaft portion and the rotation transmitting shaft portion are formed at the same position in the axial direction.

A first embodiment of the implant of the present invention includes: an implant body having a tapered inner diameter tapered portion in the depth direction and a non-circular rotation preventing hole portion formed in the central hole portion And a support body having a tapered fitting shaft portion fitted to the fitting hole portion and a rotation preventing shaft portion fitted to the rotation preventing hole portion, the implant being embedded in the bone The implant for transmitting the rotational force from the driving source is inserted into the center hole by the implanter, and the fitting hole portion is fitted with the collimating shaft portion having the same shape as the fitting shaft portion, and the rotation is performed. The hole portion is prevented from being fitted to the rotation of the same shape as the rotation preventing shaft portion to transmit the shaft portion.

According to a second aspect of the present invention, in the first aspect, the abutment body includes: abutment teeth, the fitting shaft portion, the rotation preventing shaft portion, and the formation along the axial direction a through hole; the positioning pin has: a shaft body portion inserted through the through hole, and a common rotation limiting shaft portion The common rotation restricting shaft portion is engaged with the anti-rotation shaft portion having a larger diameter than the shaft main body portion and the common rotation restricting hole portion of the center hole, and restricts rotation around the shaft; the locking bushing is locked to the through hole The hole and the shaft body portion; and the positioner are engaged with the anti-drop shaft portion and the anti-drop hole portion to restrict movement of the positioning pin to the implant.

According to a third aspect of the present invention, in the first or second aspect, the pressure-resistant portion formed by the fitting hole portion and the fitting shaft portion and the rotation preventing hole portion and The rotation preventing portion configured by the rotation preventing shaft portion is formed at a position different in the axial direction.

According to a fourth aspect of the present invention, in the first or second aspect, the pressure-resistant portion including the fitting hole portion and the fitting shaft portion and the rotation preventing hole portion and The rotation preventing portion configured by the rotation preventing shaft portion is formed at the same position in the axial direction.

In the present invention, when the implant is rotated and embedded in the bone, the posture of the implant can be stabilized. Therefore, an excessive burden on the human body can be avoided.

2‧‧‧ alveolar bone (bone)

5‧‧‧ implants

6‧‧‧Artificial crown

8‧‧‧Support

10‧‧‧ implant

12‧‧‧ male screws

13‧‧‧ center hole

14‧‧‧Conical hole part (fitting hole part)

15‧‧‧ reverse tapered hole

15A‧‧‧ protruding parts (to prevent falling holes)

16‧‧‧Clock hole

16A‧‧‧ parallel two sides (co-rotation limit hole)

17‧‧‧Protrusion (rotation prevention hole)

20‧‧‧ abutment teeth

21‧‧‧ Body Department

22‧‧‧Conical shaft part (fitting shaft part)

23‧‧‧Ditch (rotation prevention shaft)

24‧‧‧through holes

25‧‧‧ internal screws

30‧‧‧Locating pin

30A‧‧‧ body part (shaft body part)

31‧‧‧Clock Department

31A‧‧‧ Tapered part (to prevent falling off the shaft)

31B‧‧‧ parallel two sides (co-rotation limit shaft)

32‧‧‧External screws

40‧‧‧Locator

41‧‧‧ teeth

50‧‧‧Lock nut (locking bushing)

51‧‧‧External screws

52‧‧‧ Internal screws

53‧‧‧wrench ditch

60‧‧‧Withstand voltage department

70‧‧‧Rotation Prevention Department

80‧‧‧ Implant-mounted implanter (implant implanter)

81‧‧‧Motor Connection

82‧‧‧ implant connection

83‧‧‧Alignment shaft

84‧‧‧Rotating transmission shaft

84A‧‧‧Ditch Department

85‧‧‧ Positioner (variable diameter)

86‧‧‧Spindle

87‧‧‧ Positioning body

105‧‧‧ implants

108‧‧‧Support

110‧‧‧ implant

113‧‧‧ center hole

114‧‧‧Conical hole part (fitting hole part)

117‧‧‧Rotary hole prevention

117A‧‧‧Ditch Department

120‧‧‧ abutment teeth

121‧‧‧ Body Department

122‧‧‧Conical shaft part (fitting shaft part)

123‧‧‧Rotation prevention shaft

123A‧‧‧ Protrusion

124‧‧‧through holes

124A‧‧‧ body through hole

124B‧‧‧Conical shaft side through hole

125‧‧‧fall surface

130‧‧‧Locating pin

150‧‧‧Lock nut (locking bushing)

150A‧‧‧ end face

150B‧‧‧ end face

150S‧‧‧ outer perimeter

160‧‧‧Withstand voltage department

170‧‧‧Rotation Prevention Department

180‧‧‧ Implant-mounted implanter (implant implanter)

182‧‧‧ implant connection

183‧‧‧Alignment shaft

184‧‧‧Rotating transmission shaft

184A‧‧‧ Protrusion

F‧‧‧Bite pressure

S‧‧‧Apartment

Fig. 1 is a view showing an example of use in the dental field of the implant according to the first embodiment of the present invention.

Fig. 2 is an exploded perspective view of the implant of the first embodiment of the present invention.

Fig. 3 is a longitudinal sectional view showing the implant of the first embodiment of the present invention.

4 is a view showing an implant, (a) is a top view, and (b) is a longitudinal cross-sectional view (section IVb-IVb).

Figure 5 is a view showing the abutment teeth, (a) is a side view, (b) is a bottom view, (c) is a longitudinal sectional view (Vc-Vc cross section).

Fig. 6 is a view showing a positioning pin, (a) being a side view and (b) being a bottom view.

Fig. 7 is a view showing a positioner, (a) being a bottom view and (b) being a longitudinal sectional view (VIIb-VIIb cross section).

Fig. 8 is a view showing a lock nut, (a) is a bottom view, and (b) is a longitudinal sectional view (section VIIIb-VIIIb).

Figure 9 is a view showing an implant-mounted implanter according to a first embodiment of the present invention, wherein (a) is a side view, (b) is a bottom view, and (c) is a partial cross-sectional view (IXc-IXc cross section) .

Fig. 10 is a view showing a state of use of the implant-mounted implanter of the first embodiment of the present invention.

Figure 11 is a longitudinal sectional view of an implant according to a second embodiment of the present invention.

Fig. 12 is a view showing the implant, (a) is a top view, and (b) is a side sectional view (XIIb-XIIb cross section).

Fig. 13 is a view showing abutment teeth, (a) is a side view, (b) is a longitudinal sectional view (XIIIb-XIIIb cross section), and (c) is a bottom view.

Fig. 14 is a view showing a positioning pin, (a) being a side view and (b) being a bottom view.

Fig. 15 is a view showing a lock nut, wherein (a) is a top view and (b) is a longitudinal cross-sectional view (XVb-XVb cross section).

Figure 16 is a view showing an implant-mounted implanter according to a second embodiment of the present invention, wherein (a) is a side view, (b) is a bottom view, and (c) is a partial cross-sectional view (XVIc-XVIc cross section) .

Fig. 17 is a view showing a state of use of the implant-mounting implant of the second embodiment of the present invention.

Detailed description of the preferred embodiment

Embodiments of the present invention will be described with reference to the drawings. The various dimensions and the like shown in the following description are examples.

[First Embodiment]

Fig. 1 is a view showing an example of use in the dental field of the implant 5 according to the first embodiment of the present invention.

The implant 5 has an implant 10 fixed to the alveolar bone 2, and an abutment body 8 detachably attachable to the implant 10. The abutment body 8 is provided with an artificial crown 6 .

The central axis (longitudinal direction) of the implant 5 is the Z axis (Z direction, depth direction, axial direction, longitudinal direction). In the Z axis, the implant 10 side is the +Z side (+Z direction), and the abutment tooth 20 side is the -Z side (-Z direction). Let the bottom view be viewed from the +Z direction and the top view when viewed from the -Z direction. The end in the +Z direction is referred to as the base end (ground end), and the end in the -Z direction is referred to as the front end (second end).

A male screw 12 is formed on the outer peripheral surface of the implant 10. The implant 10 can be fixed to the alveolar bone 2 by screwing the male screw 12 to a hole formed in the alveolar bone (bone) 2.

The outer peripheral surface of the abutment body 8 is provided with an artificial crown 6 by using an adhesive or the like.

The abutment portion S of the implant 10 and the abutment body 8 is covered by the gum 4 or the alveolar bone 2. The abutting faces of the implant 10 and the abutment body 8 are precisely processed. The abutting surfaces of the implant 10 and the abutment body 8 are in close contact with each other to prevent foreign matter from entering.

Fig. 2 is an exploded perspective view of the implant 5 according to the first embodiment of the present invention.

Fig. 3 is a longitudinal sectional view of the implant 5 according to the first embodiment of the present invention.

The implant 5 has an implant 10 and abutment body 8.

The abutment body 8 is formed by assembling the abutment teeth 20, the positioning pin 30, the positioner 40, and the lock nut 50.

The abutment body 8 has abutment teeth 20 of a shaft member, a shaft-shaped positioning pin 30, an annular positioner 40, and a lock nut 50.

The abutment tooth 20 is provided with an artificial crown 6.

The positioning pin 30 is inserted into the through hole 24 of the abutment tooth 20 to be engaged with the implant 10 .

The positioner 40 is fitted to the positioning pin 30.

The locking nut 50 is screwed (locked) to the abutment tooth 20 and the positioning pin 30.

4 is a view showing the implant 10, (a) is a top view, and (b) is a longitudinal cross-sectional view (section IVb-IVb).

The implant 10 is a shaft-shaped member formed of a ceramic material such as zirconium dioxide. The implant 10 is formed in a cylindrical shape, and a male screw 12 is formed on the outer peripheral surface thereof.

The center hole 13 is opened at the center of the end face on the -Z side of the implant 10. The center hole 13 is formed by continuously forming the tapered hole portion 14, the reverse tapered hole portion 15, and the engaging hole portion 16 toward the +Z side.

The tapered hole portion (fitting hole portion) 14 is gradually reduced in diameter (reduced diameter) from the end surface on the -Z side toward the +Z side. The reverse tapered hole portion 15 is gradually enlarged (expanded) toward the +Z side. The engaging hole portion 16 is formed by parallel two surfaces (co-rotation restricting hole portions) 16A which are formed by two inner surfaces which are parallel and opposed.

The taper angle of the tapered hole portion 14 is, for example, 8°. The average diameter of the tapered hole portion 14 is, for example, 2 mm. The length (depth) of the tapered hole portion 14 is formed as a plant The length of the full length (for example, 10 mm) of the body 10 is 1/3 or more (for example, 4 to 5 mm).

The inner peripheral side surface of the tapered hole portion 14 forms a plurality of protrusions 17 along the Z direction. The plurality of projections 17 (rotation preventing hole portions) are arranged at equal intervals (equal angles) in the circumferential direction of the center hole 13. The number of the protrusions 17 is five. The number of the protrusions 17 can be changed as appropriate.

The shape of the cross section of the protrusion 17 orthogonal to the Z-axis is a shape in which the top side (outer peripheral side) bulges into a semi-circular arc shape.

The minimum inner diameter of the reverse tapered hole portion 15 is smaller than the minimum inner diameter of the tapered hole portion 14. Therefore, the connecting portion of the tapered hole portion 14 and the reverse tapered hole portion 15 forms a protruding portion (preventing the falling hole portion) 15A that protrudes toward the inner peripheral side of the center hole 13. The taper angle of the reverse tapered hole portion 15 is, for example, 10°. The length (depth) of the reverse tapered hole portion 15 is, for example, 2.5 mm.

The engaging hole portion 16 is composed of two arcuate inner circumferential side faces that face each other and two inner side faces which are parallel and opposed. The two inner sides are parallel to each other 16A. The length (depth) of the engaging hole portion 16 is, for example, 1.2 mm. The width (two-sided width) of the two parallel two faces 16A is about 1.1 mm.

Fig. 5 is a view showing abutment teeth 20, (a) is a side view, (b) is a bottom view, and (c) is a longitudinal sectional view (Vc-Vc cross section).

The abutment tooth 20 is composed of a body portion 21 and a tapered shaft portion 22.

An artificial crown 6 is attached to the body portion 21. The tapered shaft portion (fitting shaft portion) 22 is extended from the proximal end side (+Z side) of the body portion 21, and is inserted into the center hole 13 of the implant 10.

The abutment tooth 20 is integrally formed of a white ceramic material having excellent appearance. form. The ceramic material uses zirconium dioxide.

The taper angle of the tapered shaft portion 22 is, for example, 8°. The angle is the same as the angle of the tapered hole portion 14 of the center hole 13 of the implant 10.

The average inner diameter of the tapered shaft portion 22 is, for example, 2 mm. The length of the tapered shaft portion 22 is formed the same as or longer than the tapered hole portion 14. The length of the tapered shaft portion 22 is, for example, 6 mm.

The outer circumferential side surface of the tapered shaft portion 22 forms a plurality of groove portions 23 along the Z direction. The plurality of groove portions 23 (rotation preventing shaft portions) are arranged at equal intervals (equal angles) in the circumferential direction of the tapered shaft portion 22. The number of the grooves 23 is five. The number of the groove portions 23 can be changed as appropriate. The number of the grooves 23 is the same as the number of the projections 17 of the tapered hole portion 14.

The shape of the cross section of the groove portion 23 orthogonal to the Z-axis is a shape of a semicircular arc shape recessed in the bottom side (inner peripheral side). That is, the groove portion 23 has a shape opposite to the protrusion 17 formed on the inner peripheral side surface of the tapered hole portion 14.

When the abutment tooth 20 is inserted into the central hole 13 of the implant 10, the tapered shaft portion 22 of the abutment tooth 20 is fitted to the tapered hole portion 14 of the central hole 13 of the implant 10. At this time, the five groove portions 23 formed in the tapered shaft portion 22 are inserted into the five projections 17 formed in the tapered hole portion 14.

The center of the abutment tooth 20 forms a through hole 24 that penetrates the Z direction. In the through hole 24, the inner diameter of the portion corresponding to the body portion 21 is formed to be about 2.5 mm. One of the through holes 24 is provided with a screw 25 inside the M2.5. The screw size or the like of the inner screw 25 can be appropriately changed depending on the inner diameter of the through hole 24 and the like.

In the through hole 24, the inner diameter of the portion corresponding to the tapered shaft portion 22 is formed, for example, by 1 mm. The positioning pin 30 is inserted into the through hole 24 with almost no gap.

Fig. 6 is a view showing the positioning pin 30, (a) is a side view, and (b) is a bottom view.

The positioning pin 30 is an elongated shaft member. The positioning pin 30 is formed of titanium or a titanium alloy. The diameter of the positioning pin 30 is, for example, 1 mm.

The positioning pin 30 is composed of an elongated main body portion (shaft main body portion) 30A and an engaging portion 31 formed on the proximal end side (+Z side) of the main body portion 30A. The diameter of the body portion 30A is, for example, 1 mm. The engaging portion 31 is fitted into the engaging hole portion 16 formed at the deepest portion of the center hole 13 of the implant 10.

The engaging portion 31 is composed of a tapered portion 31A and a parallel two faces 31B. The tapered portion (preventing the falling shaft portion) 31A is gradually enlarged (expanded) toward the +Z side. The parallel two sides (co-rotation restricting shaft portion) 31B are two outer side surfaces which are formed on the outer side surface of the tapered portion 31A and which are parallel to each other. The angle of the tapered portion 31A is about 30°. The width (two-sided width) of the parallel two faces 31B is, for example, 1.1 mm.

The screw 32 is provided outside the M1 on the front end side (-Z side) of the positioning pin 30. The screw size or the like of the outer screw 32 can be appropriately changed depending on the diameter of the positioning pin 30 and the like.

The length of the positioning pin 30 is the length at which the screw 25 of the end portion (-Z side) of the through hole 24 of the abutment tooth 20 and the abutment tooth 20 are substantially the same position when the implant 5 is assembled.

Fig. 7 is a view showing the positioner 40, (a) is a bottom view, and (b) is a longitudinal sectional view (sections VIIb-VIIb).

The positioner 40 is an annular member. The positioner 40 is formed of titanium or a titanium alloy. The outer diameter of the positioner 40 is, for example, 1.5 mm. The outer diameter of the positioner 40 is compared to the planting The minimum inner diameter of the reverse tapered hole portion 15 of the center hole 13 of the inlet body 10 is slightly smaller. The outer diameter of the retainer 40 may be made slightly larger than the minimum inner diameter of the reverse tapered hole portion 15, and may be transferred to the reverse tapered hole portion 15.

The inner diameter of the positioner 40 is, for example, 1 mm. The inner diameter of the positioner 40 is externally fitted to the positioning pin 30. The positioner 40 is disposed at a position hooked to the engaging portion 31 of the positioning pin 30.

The positioner 40 is a reverse tapered hole portion 15 that is configured to be received in the center hole 13 of the implant 10 when the implant 5 is assembled.

The positioner 40 forms three teeth 41 on the proximal end side (+Z side). The number of the molars 41 can be changed as appropriate. When the retainer 40 is fitted with the engaging portion 31 of the positioning pin 30, the latch 41 is elastically deformed toward the outer peripheral side to expand. The molars 41 of the positioner 40 have the same effect as the so-called collet chucks.

When the molars 41 of the retainer 40 are expanded toward the outer peripheral side, they are larger than the minimum inner diameter of the tapered bore portion 14. The positioner 40 is hooked on (in between) the protruding portion 15A projecting toward the inner peripheral side in the upper end of the reverse tapered hole portion 15 of the center hole 13 of the implant 10. Thereby, the movement of the positioner 40 and the positioning pin 30 to the -Z side is restricted.

Fig. 8 is a view showing the lock nut 50, wherein (a) is a bottom view and (b) is a longitudinal sectional view (section VIIIb-VIIIb).

The locking nut (locking bushing) 50 is an annular member. The lock nut 50 has a screw 51 other than M2.5 on the outer peripheral surface, and has an inner screw M52 on the inner peripheral surface. The locking nut 50 is formed of titanium or a titanium alloy. The screw size of the outer screw 51 and the inner screw 52 can be appropriately changed in accordance with the inner screw 25 and the outer screw 32.

The end face on the -Z side of the lock nut 50 is provided with a pair of wrench grooves 53 having two sides facing in parallel and facing away from each other. A tool (wrench, etc.) not shown can be engaged in the The parallel sides of the wrench groove 53 rotate the lock nut 50.

The outer screw 51 is screwed to the inner screw 25 formed in a portion of the through hole 24 of the abutment tooth 20. The inner screw 52 is screwed to the screw 32 formed on the front end side (-Z side) of the positioning pin 30. In the state in which the implant 5 is assembled, when the lock nut 50 is rotated rightward, the positioning pin 30 is moved toward the -Z side with respect to the abutment tooth 20.

(Second method of implant treatment (treatment method requiring secondary surgery))

The assembly of the implant 5 and the like is performed in the following order.

(first surgery)

Initially, the implant 10 is embedded in the alveolar bone 2 of the patient.

When the implant 10 is embedded in the alveolar bone 2, the implant 80 is mounted using the implant.

Fig. 9 is a view showing the implant-mounting implanter 80 according to the first embodiment of the present invention, wherein (a) is a side view, (b) is a bottom view, and (c) is a partial cross-sectional view (IXc-IXc cross section). ).

Fig. 10 is a view showing a state of use of the implant-mounting implanter 80 according to the first embodiment of the present invention.

In the implant-mounted implanter 80, the end in the +Z direction is referred to as the front end (first end), and the end in the -Z direction is referred to as the base end (second end).

The implant-mounting implanter (implant implanter) 80 is an elongated shaft-shaped member and is formed of stainless steel or the like. The implant mounting implanter 80 is used in a state of being coupled to a surgical motor not shown.

The implant-mounting implant 80 is joined to the surgical side at the proximal end side (-Z side) A motor coupling portion 81 of a surgical motor (drive source). The implant attachment implanter 80 forms an implant attachment portion 82 that is inserted and fitted into the central hole 13 of the implant 10 on the distal end side (+Z side).

The implant connecting portion 82 is composed of a collimating shaft portion 83 having a tapered outer diameter toward the front end, a non-circular rotation transmitting shaft portion 84, a positioner 85 capable of changing the outer diameter, and the like. The collimation shaft portion 83 is formed integrally with the rotation transmission shaft portion 84. In other words, the collimation shaft portion 83 and the rotation transmission shaft portion 84 are formed at the same position in the Z direction (axial direction).

The collimation shaft portion 83 is a portion that is fitted to the tapered hole portion 14 of the center hole 13 of the implant 10. The collimating shaft portion 83 has the same shape as the tapered shaft portion 22 of the abutment tooth 20 of the abutment body 8.

The rotation transmission shaft portion 84 is a portion that is fitted to the projection 17 of the center hole 13 of the implant 10. The rotation transmission shaft portion 84 has a groove portion 84A. The rotation transmission shaft portion 84 (the groove portion 84A) has the same shape as the groove portion 23 of the abutment tooth 20.

The positioner (variable diameter portion) 85 is a portion that is engaged with the reverse tapered hole portion 15 (projecting portion 15A) of the center hole 13 of the implant 10. The positioner 85 (positioning body 87) is formed in substantially the same shape as the positioner 40 of the abutment body 8.

The implant attachment portion 82 of the implant-mounted implanter 80 is formed in the abutment body 8 in the same shape as the portion inserted into the central hole 13 of the implant 10.

Therefore, when the implant connecting portion 82 of the implant attachment implanter 80 is inserted into the center hole 13 of the implant 10, the same function as the pressure resistant portion 60 and the rotation preventing portion 70 to be described later can be exhibited.

Specifically, the implant mounting implant 80 is inserted into the implant 10. In the state of the core hole 13, since the collimating shaft portion 83 is fitted (closely) with the tapered hole portion 14, the implant-mounted implanter 80 is aligned with the central axis (rotational axis) of the implant 10, The posture of the implant 10 is restricted (suppressed). Further, since the groove portion 84A of the rotation transmitting shaft portion 84 is engaged with the projection 17, the rotation of the implant 10 with respect to the implant-mounted implanter 80 can be restricted (prevented).

The positioner 85 is composed of a thin shaft portion 86 formed in the implant connecting portion 82 and a positioning body 87 having a slight gap fitting with respect to the thin shaft portion 86. The positioning body 87 is a C-shaped annular member formed of a synthetic resin such as PEEK (polyetheretherketone).

The outer diameter of the positioning body 87 is slightly larger than the minimum inner diameter of the reverse tapered hole portion 15 of the center hole 13 of the implant 10. Therefore, the positioner 85 can be rotated into the reverse tapered hole portion 15 of the center hole 13 of the implant 10. Since the positioning body 87 has a C-shaped annular member and is provided with a slight gap between the positioning portion 87 and the thin shaft portion 86, when the positioning body 87 abuts against the protruding portion 15A, the outer diameter of the positioning body 87 is elastically deformed and becomes small. Moreover, when the positioner 85 is inserted into the reverse tapered hole portion 15, the elastic deformation of the positioning body 87 is restored and the positioner 85 is engaged with the protruding portion 15A. Therefore, the removal of the implant 10 from the implant mounting implant 80 can be prevented.

When the implant 10 is embedded in the alveolar bone 2, the groove portion 84A of the rotation transmitting shaft portion 84 is engaged with the projection 17, so that the rotational force of the surgical motor is surely transmitted to the implant through the implant-mounted implanter 80. 10. Further, since the collimating shaft portion 83 is fitted into the tapered hole portion 14, the implant 10 is buried in the alveolar bone 2 in a state where the posture is stabilized without being shaken. Therefore, the implant 80 can be mounted using the implant to avoid an excessive burden on the human body.

The male screw 12 of the implant 10 has the function of thread cutting, so The implant 10 is embedded in the alveolar bone 2 while cutting the thread directly. Therefore, the operation time can be shortened and a firm initial fixation can be obtained.

After the implant 10 is embedded in the alveolar bone 2, the implant-mounted implanter 80 is pulled out in the -Z direction to be separated from the implant 10. At this time, the positioning body 87 abuts against the protruding portion 15A, and the elastic deformation causes the outer diameter to be small. Since the positioning body 87 is elastically deformed only by a slight tensile force, it does not cause an excessive load on the human body, and the implant 10 does not fall off from the alveolar bone 2.

After the implant mounting implant 80 is detached from the implant 10, the gums 4 are sutured. The alveolar bone 2 and the implant 10 are also closely connected to each other for 3 to 6 months due to personal differences.

(Preparation for the second operation)

The abutment body 8 is additionally assembled separately from the implant 10. The abutment body 8 is assembled by the abutment teeth 20, the positioning pin 30, the retainer 40, and the lock nut 50. The abutment body 8 can be sold in the form of an assembly.

When assembling the abutment body 8, the positioner 40 is first externally fitted to the positioning pin 30. Next, the locking nut 50 is mounted relative to the abutment teeth 20. The screw 51 other than the lock nut 50 is screwed to the inner screw 25 formed in a part of the through hole 24 of the abutment tooth 20.

Next, the positioning pin 30 is inserted from the +Z side of the through hole 24 of the abutment tooth 20. The front end side (-Z side) of the positioning pin 30 abuts against the lock nut 50 attached to the abutment tooth 20, and the positioning pin 30 is rotated rightward. By the right rotation of the positioning pin 30, the screw 32 outside the positioning pin 30 is screwed into the screw 52 inside the locking nut 50. The front end side (-Z side) of the positioner 40 externally fitted to the positioning pin 30 is abutted Before the end of the abutment tooth 20 on the -Z side, the positioning pin 30 is rotated to the right.

Thereby, the assembly of the abutment body 8 is completed.

(second surgery)

The abutment body 8 is inserted into the central hole 13 of the implant 10 embedded in the alveolar bone 2 of the patient. The tapered shaft portion 22 of the abutment tooth 20 is wedge-shaped into the tapered bore portion 14 of the central bore 13 of the implant 10.

The engaging portion 31 of the proximal end side (+Z side) of the positioning pin 30 is inserted into the engaging hole portion 16 at the bottommost (+Z side) of the center hole 13 of the implant 10. The parallel two surfaces 31B of the engaging portion 31 of the positioning pin 30 are in close contact with (the fitting) the parallel two surfaces 16A of the engaging hole portion 16 of the implant 10.

Next, a tool (wrench, etc.) (not shown) is fitted into the wrench groove 53 of the lock nut 50 to rotate right. The lock nut 50 moves while rotating in the +Z direction. At the same time, the positioning pin 30 moves in the -Z direction.

At this time, the pitch of the screw 51 and the inner screw 52 outside the lock nut 50 is different (M2.5: 0.35P, M1: 0.2P), so the amount of movement in the +Z direction is smaller than that of the lock nut 50. The amount of movement of the positioning pin 30 in the -Z direction becomes large.

Since the engaging portion 31 of the positioning pin 30 is inserted into the engaging hole portion 16 of the implant body 10, the parallel two faces 31B of the engaging portion 31 are in close contact (fitting) with the parallel two faces 16A of the engaging hole portion 16, and thus the positioning pin 30 own rotation is restricted (suppressed). The positioning pin 30 does not rotate with the locking nut 50 but moves in the -Z direction.

When the positioning pin 30 is moved in the -Z direction, the front end side (-Z side) of the positioner 40 externally fitted to the positioning pin 30 abuts against the end of the +Z side of the abutment tooth 20, and the positioner 40 The movement in the +Z direction is restricted (suppressed).

Further, when the positioning pin 30 is moved in the +Z direction, on the inner circumference side of the positioner 40 The tapered portion 31A of the engaging portion 31 of the positioning pin 30 is inserted (the positioner 40 is fitted with the tapered portion 31A). Thereby, the three teeth 41 on the +Z side of the positioner 40 are elastically deformed to expand toward the outer peripheral side.

Therefore, the positioner 40 is hooked on the protruding portion 15A protruding toward the inner peripheral side in the upper end of the reverse tapered hole portion 15 of the center hole 13 of the implant body 10, and the positioner 40 and the positioning pin 30 are on the -Z side. Movement is limited.

In a state where the movement of the positioner 40 and the positioning pin 30 toward the -Z side is restricted, the lock nut 50 is further rotated to the right. The abutment teeth 20 move to the +Z direction. The abutment teeth 20 are further moved toward the implant 10, and the tapered shaft portion 22 of the abutment teeth 20 is further wedge-shaped into the tapered bore portion 14 of the central bore 13 of the implant 10.

In this way, the implant 5 does not come loose and can be assembled with strength. Then, the artificial crown 6 is attached to the outer peripheral surface of the abutment tooth 20 of the implant 5 using an adhesive or the like.

In the implant 5, by fitting (inserting) the tapered shaft portion 22 and the tapered hole portion 14, it is possible to function by receiving the pressure-resistant portion 60 that acts on the external force (biting pressure F) of the abutment tooth 20 ( Refer to Figure 1).

In particular, the pressure-resistant portion 60 has a length in the Z direction of the tapered shaft portion 22 and the tapered hole portion 14 which is considerably longer than in the related art. Therefore, the area for receiving the nip pressure F is increased, and the pressure resistance is high.

Therefore, for example, when the implant 5 is used for the front teeth, the nip pressure F can be surely received even if the nip pressure F is received in the direction in which the abutment teeth 20 are staggered in the direction intersecting the Z-axis direction. Therefore, the abutment teeth 20 or the implant 10 may be cracked or broken.

When the abutment teeth 20 are inserted into the central hole 13 of the implant 10, the five groove portions 23 of the tapered shaft portion 22 are inserted into the five projections 17 of the tapered hole portion 14 of the center hole 13. The projection 17 of the tapered hole portion 14 is engaged with the groove portion 23 on the outer circumferential side surface of the tapered shaft portion 22, so that the rotation of the abutment tooth 20 with respect to the implant 10 is restricted (suppressed). The projection 17 of the tapered hole portion 14 and the groove portion 23 of the tapered shaft portion 22 constitute a rotation preventing mechanism 70 and function.

In the implant 5, the pressure-resistant portion 60 (the tapered shaft portion 22 and the tapered hole portion 14) that receives the nip pressure F and the rotation preventing mechanism 70 (the projection 17 and the groove portion 23) are integrally formed. In other words, the pressure-resistant portion 60 and the rotation preventing portion 70 are formed at the same position in the Z direction (axial direction).

Therefore, the pressure-resistant portion 60 can be formed longer (deep) than in the past. The length of the pressure-resistant portion 60 (the tapered shaft portion 22 and the tapered hole portion 14) can be made longer than 1/3 of the entire length of the implant 10.

Therefore, the implant 5 does not generate cracks or nicks in the abutment teeth 20 or the implant 10, and can reliably withstand a strong nip pressure F.

[Second embodiment]

Fig. 11 is a longitudinal sectional view showing an implant 105 according to a second embodiment of the present invention.

In the implant 105, the same members as those of the implant 5 of the first embodiment are denoted by the same reference numerals and the description thereof will be omitted.

The implant 105 has an implant 110 that is fixed to the alveolar bone 2, and an abutment body 108 that can be attached to and detached from the implant 110. The abutment body 108 is provided with an artificial crown 6 .

Let the central axis (longitudinal direction) of the implant 105 be the Z axis (Z side) Direction, depth direction, axis direction, vertical). In the Z axis, the implant body 110 side is the +Z side (+Z direction), and the abutment tooth 120 side is the -Z side (-Z direction). Let the bottom view be viewed from the +Z direction and the top view when viewed from the -Z direction. The end portion in the +Z direction is referred to as a base end (first end), and the end portion in the -Z direction is referred to as a front end (second end).

The abutment body 108 is assembled by assembling the abutment teeth 120, the positioning pin 130, the positioner 40, and the locking nut 150.

The abutment body 108 has abutment teeth 120 of a shaft member, a positioning pin 130, a positioner 40, and a locking nut 150.

The abutment tooth 120 is provided with an artificial crown 6.

The positioning pin 130 is inserted into the through hole 124 of the abutment tooth 120 to be engaged with the implant 110.

The positioner 40 is fitted to the positioning pin 130.

The locking nut 150 is engaged with the abutment teeth 120 and screwed to the positioning pin 130.

In the implant 5 of the first embodiment, the pressure-resistant portion 60 (the tapered shaft portion 22 and the tapered hole portion 14) that receives the nip pressure F is integrated with the rotation preventing portion 70 (the projection 17 and the groove portion 23) (Z Formed in the same position in the direction).

On the other hand, in the implant 105, the pressure-resistant portion 160 (the tapered shaft portion 122 and the tapered hole portion 114) that receives the nip pressure F and the rotation preventing portion 170 (the rotation preventing hole portion 117 and the rotation preventing shaft portion 123) It is formed separately (different positions in the Z direction).

Fig. 12 is a view showing the implant 110, wherein (a) is the upper view and (b) is a side partial sectional view (XIIb-XIIb cross section).

The implant 110 is a shaft formed by a ceramic material such as zirconium dioxide. And a male screw 12 is formed on the outer peripheral surface.

The center hole 113 is opened at the center of the -Z side end surface of the implant 110. The tapered hole portion 114, the rotation preventing hole portion 117, the reverse tapered hole portion 15, and the engaging hole portion 16 (parallel two faces 16A) are continuously formed in the center hole 113 toward the +Z side.

The tapered hole portion 114 is gradually reduced (reduced diameter) from the end surface on the -Z side toward the +Z side inner diameter. The rotation preventing hole portion 117 is formed in a non-circular shape.

The taper angle of the tapered hole portion (fitting hole portion) 114 is, for example, 8°. The average diameter of the tapered hole portion 114 is, for example, 2 mm. The length (depth) of the tapered hole portion 114 is, for example, 3.5 mm.

The rotation preventing hole portion 117 has a plurality of groove portions 117A along the Z direction. The plurality of groove portions 117A are arranged at equal intervals (equal angles) in the circumferential direction of the center hole 113. The number of the groove portions 117A is five. The number of the groove portions 117A can be changed as appropriate. The shape of the cross section orthogonal to the Z-axis of the groove portion 117A is such that the bottom side (inner peripheral side) has a shape of a semi-circular arc.

Fig. 13 is a view showing the abutment tooth 120, wherein (a) is a side view, (b) is a longitudinal sectional view (XIIIb-XIIIb cross section), and (c) is a bottom view.

The abutment tooth 120 is composed of a body portion 121, a tapered shaft portion 122, and a rotation preventing shaft portion 123.

An artificial crown 6 is attached to the body portion 121. The tapered shaft portion (fitting shaft portion) 122 is extended from the proximal end side (+Z side) of the body portion 121, and is inserted into the center hole 113 of the implant 10.

The abutment tooth 120 is integrally formed of a white ceramic material having excellent aesthetic properties. The ceramic material uses zirconium dioxide.

The taper angle of the tapered shaft portion 122 is, for example, 8°. And implant 110 The angle of the tapered hole portion 114 of the center hole 113 is the same.

The average inner diameter of the tapered shaft portion 122 is, for example, 2 mm. The length of the tapered shaft portion 122 is formed to be the same as or longer than the tapered hole portion 114. The length of the tapered shaft portion 122 is, for example, 5 mm.

The rotation preventing shaft portion 123 has a plurality of protrusions 123A along the Z direction. The plurality of protrusions 123A are arranged at equal intervals (equal angles) in the circumferential direction of the rotation preventing shaft portion 123. The number of the protrusions 123A is five. The number of the protrusions 123A can be changed as appropriate. The number of the protrusions 123A is the same as the number of the groove portions 117A of the rotation preventing hole portion 117.

The shape of the cross section perpendicular to the Z-axis of the projection 123A is a shape in which the top side (outer peripheral side) bulges into a semicircular arc shape. That is, the projection 123A has a shape opposite to the groove portion 117A of the rotation preventing hole portion 117.

When the abutment tooth 120 is inserted into the central hole 113 of the implant 110, the tapered shaft portion 122 of the abutment tooth 120 is fitted to the tapered hole portion 114 of the central hole 113 of the implant 110. At about the same time, the five projections 123A of the rotation preventing shaft portion 123 are inserted into the five groove portions 117A of the rotation preventing hole portion 117.

The center of the abutment tooth 120 forms a through hole 124 that penetrates the Z direction. In the through hole 124, the inner diameter of the portion corresponding to the main body portion 121 (the main body portion side through hole 124A) is formed, for example, by 2.5 mm. The body portion side through hole 124A is inserted into the lock nut 150.

In the through hole 124, the inner diameter of the portion corresponding to the tapered shaft portion 122 (the tapered shaft portion side through hole 124B) is formed, for example, by 1 mm. The body portion 30A of the positioning pin 130 is inserted into the tapered shaft portion side through hole 124B with almost no gap.

The boundary between the main body side through hole 124A and the tapered shaft side through hole 124B A drop surface 125 perpendicular to the Z direction is formed.

Fig. 14 is a view showing the positioning pin 130, (a) being a side view, and (b) being a bottom view.

The positioning pin 130 and the positioning pin 30 have substantially the same shape. The base end side (+Z side) of the positioning pin 130 is additionally provided with a tapered portion 31A and a parallel two surface 31B which are different from the engaging portion 31 of the positioning pin 30.

Fig. 15 is a view showing the lock nut 150, wherein (a) is the upper view and (b) is a longitudinal sectional view (XVb-XVb cross section).

The lock nut 150 is an annular (cylindrical) member formed of titanium or a titanium alloy.

The inner circumferential surface of the locking nut 150 is provided as an inner screw 52 of the M1 size right screw. The screw size or the like of the inner screw 52 can be appropriately changed in accordance with the outer screw 32.

The end face 150A of the +Z side of the lock nut 150 abuts against the drop face 125 of the through hole 124 of the abutment tooth 120, and is formed to be rotatable about the central axis (center hole).

The end face 150B on the -Z side of the lock nut 150 is provided with a straight groove 153 into which a flat-shaped screwdriver (not shown) is inserted. The inline screw driver is engaged with the straight groove 153 to rotate the lock nut 150.

The lock nut 150 is inserted into the through hole 124 (the body portion side through hole 124A) of the abutment tooth 120. A slight gap is provided between the outer circumferential surface 150S of the lock nut 150 and the main body side through hole 124A. The screw 52 inside the lock nut 150 is screwed to the screw 32 other than the positioning pin 130 exposed on the main body side through hole 124A.

Therefore, when the lock nut 150 is rotated rightward in the state in which the implant 105 is assembled, the end surface 150A of the lock nut 150 abuts against the drop surface 125 of the through hole 124 of the abutment tooth 120 and slides. At the same time, the positioning pin 130 screwed to the inner screw 52 can be moved toward the -Z side of the abutment tooth 120.

(Second method of implant treatment (treatment method requiring secondary surgery))

The assembly of the implant 105 and the like are substantially the same as the assembly of the implant 5 of the first embodiment.

(first surgery)

Initially, the implant 110 is embedded in the alveolar bone 2 of the patient.

When the implant 110 is embedded in the alveolar bone 2, the implant 180 is mounted using the implant.

Figure 16 is a view showing an implant-mounted implanter 180 according to a second embodiment of the present invention, wherein (a) is a side view, (b) is a bottom view, and (c) is a partial cross-sectional view (XVIc-XVIc cross section). ).

Fig. 17 is a view showing a state of use of the implant-mounting implanter 180 according to the second embodiment of the present invention.

In the implant-mounted implanter 180, the end in the +Z direction is referred to as the front end (first end), and the end in the -Z direction is referred to as the base end (second end).

The implant-mounted implanter (implant implanter) 180 is an elongated shaft-shaped member and is formed of stainless steel or the like. The implant mounting implanter 180 is used in a state of being coupled to a surgical motor (not shown).

The implant attachment implanter 180 forms an implant attachment portion 182 that is inserted and fitted to the central hole 113 of the implant 110 on the distal end side (+Z side).

The implant connecting portion 182 is composed of a collimating shaft portion 183 having a tapered outer diameter toward the front end, a non-circular rotation transmitting shaft portion 184, a positioner 85 capable of changing the outer diameter, and the like. The collimation shaft portion 183 is formed separately from the rotation transmission shaft portion 184. That is, the collimation shaft portion 183 and the rotation transmission shaft portion 184 are formed at different positions in the Z direction (axial direction).

The collimating shaft portion 183 is a portion that is fitted to the tapered hole portion 114 of the center hole 113 of the implant 110. The collimating shaft portion 183 is formed in the same shape as the tapered shaft portion 122 of the abutment tooth 120 of the abutment body 108.

The rotation transmission shaft portion 184 is a portion that is fitted to the rotation preventing hole portion 117 (the groove portion 117A). The rotation transmitting shaft portion 184 has a protrusion 184A. The rotation transmission shaft portion 184 (protrusion 184A) has the same shape as the projection 123A of the rotation preventing shaft portion 123 of the abutment tooth 120.

The positioner 85 is a portion that engages with the reverse tapered hole portion 15 (projecting portion 15A) of the center hole 113 of the implant body 110. The positioner 85 (positioning body 87) is formed in a shape substantially the same as the positioner 40 of the abutment body 108.

The implant attachment portion 182 of the implant mounting implant 180 is formed in the same shape as the portion of the abutment body 108 that is inserted into the central hole 113 of the implant 110. Therefore, when the implant connecting portion 182 of the implant attachment implanter 180 is inserted into the center hole 113 of the implant 110, the same function as the pressure resistant portion 160 and the rotation preventing portion 170 to be described later can be exhibited.

Specifically, in a state where the implant mounting implanter 180 is inserted into the center hole 113 of the implant body 110, since the collimating shaft portion 183 is fitted (closed) with the tapered hole portion 114, the implant is mounted. The implanter 180 conforms to the central axis (rotational axis) of the implant 110, restricting (suppressing) the posture of the implant 110. Further, since the five projections 184A of the rotation transmitting shaft portion 184 are engaged with the five groove portions 117A of the rotation preventing hole portion 117, the rotation of the implant 110 to the implant mounting implant 180 can be restricted (prevented).

When the implant 10 is embedded in the alveolar bone 2, the rotation transmitting shaft portion 184 (protrusion 184A) is engaged with the rotation preventing hole portion 117 (the groove portion 117A), so that the rotational force of the surgical motor mounts the implanter 180 via the implant. It is indeed communicated to the implant 110. Further, since the collimating shaft portion 183 is fitted into the tapered hole portion 114, the implant body 110 is buried in the alveolar bone 2 in a state where the posture is stabilized without being shaken. Therefore, the implanter 180 can be mounted using the implant to avoid an excessive burden on the human body.

After the implant 110 is embedded in the alveolar bone 2, the implant-mounted implanter 180 is pulled out in the -Z direction to be separated from the implant 110. At this time, the positioning body 87 abuts against the protruding portion 15A, and the elastic deformation causes the outer diameter to become small. Since the positioning body 87 is elastically deformed only by a slight tensile force, it does not cause an excessive load on the human body, and the implant body 110 does not fall off from the alveolar bone 2.

After the implant-mounted implanter 180 is detached from the implant 110, the gums 4 are sutured. The alveolar bone 2 and the implant 110 are closely connected to each other in about 3 to 6 months depending on the individual.

(Preparation for the second operation)

The abutment body 108 is assembled separately from the implant 110. The abutment body 108 is assembled by the abutment teeth 120, the positioning pin 30, the retainer 40, and the locking nut 50. The abutment body 108 can be sold in the form of an assembly.

The assembly of the abutment body 108 is substantially identical to the assembly of the abutment body 8.

(second surgery)

The mounting step of the abutment body 108 to the implant 110 embedded in the alveolar bone 2 of the patient (assembly of the implant 105) is also substantially the same as the assembly of the implant 5.

In the implant 105, by fitting (inserting) the tapered shaft portion 122 and the tapered hole portion 114, a pressure-resistant portion 160 for receiving a force (biting pressure F) acting on the abutment tooth 120 is configured to function. .

When the abutment tooth 120 is inserted into the center hole 113 of the implant body 110, the five protrusions 123A of the rotation preventing shaft portion 123 are inserted into the groove portion 117A of the rotation preventing hole portion 117. Since the five groove portions 117A are engaged with the five protrusions 123A, the rotation of the abutment teeth 120 to the implant body 110 can be restricted (suppressed). The rotation preventing hole portion 117 (the groove portion 117A) and the rotation preventing shaft portion 123 (the projection 123A) function as the rotation preventing portion 170.

In the implant 105, the pressure-resistant portion 160 (the tapered shaft portion 122 and the tapered hole portion 114) that receives the nip pressure F is formed separately from the rotation preventing portion 170 (the rotation preventing hole portion 117 and the rotation preventing shaft portion 123). That is, the pressure-resistant portion 160 and the rotation preventing portion 170 are formed at different positions in the Z direction (axial direction).

Therefore, the implant 105 does not generate cracks or nicks in the abutment teeth 120 or the implant 110, and can reliably withstand a strong nip pressure F.

The technical scope of the present invention is not limited to the above embodiments. It is possible to include various modifications in the above-described embodiments without departing from the spirit and scope of the invention. The specific material or layer configuration and the like given in the embodiment are merely examples, and can be appropriately changed.

Although the implant mounting device 80, 180 is mounted on the surgical motor, it is not limited thereto. Can also be used A power source of various motors or the like is configured to manually mount the implants with the implants 80, 180 rotated. The driving force for imparting the rotational force to the implant-mounted implanter 80, 180 may be an air turbine or the like in addition to the motor or the human.

The cross-sectional shape of the rotation preventing portions 70 and 170 is not limited to the above embodiment. The cross-sectional shape of the rotation preventing portions 70, 170 may be a non-circular shape.

Instead of the protrusions 17, the groove portion 117A, the groove portion 23, and the projections 123A, a hole portion, a shaft portion, or the like having a polygonal shape or a circular shape may be formed. In this case, the shape of the rotation transmitting shaft portions 84, 184 also needs to be a polygonal portion or a circular shaft portion.

Although the case where the implants 80, 180 are mounted with the implants formed of stainless steel or the like has been described, it is not limited thereto. It may be formed of various metal materials such as titanium or titanium alloy, ceramic materials such as alumina or zirconia.

In the implant-mounted implanter 180, the collimation shaft portion 183 is disposed on the proximal end side (-Z side), and the rotation transmission shaft portion 184 is disposed on the distal end side (+Z side). However, the present invention is not limited thereto. this. The collimation shaft portion 183 may be disposed on the distal end side (+Z side), and the rotation transmission shaft portion 184 may be disposed on the proximal end side (−Z side). In this case, in the implant 110, the rotation preventing hole portion 117 is disposed on the distal end side (+Z side), and the tapered hole portion 114 is disposed on the proximal end side (-Z side).

Although the collimating shaft portions 83, 183 of the implant mounting implants 80, 180 are the same shape as the tapered shaft portions 22, 122 of the abutment teeth 20, 120, the present invention is not limited thereto. It suffices that the collimating shaft portions 83, 183 have the same shape as one of the tapered shaft portions 22, 122. Collimation shaft portion 83, The 183 may not be fitted to the entire tapered hole portions 14, 114 of the implants 10, 110. For example, the collimating shaft portions 83, 183 may have a shape in which the length in the Z direction is shorter than the tapered shaft portions 22, 122.

The biocompatible ceramic material forming the implants 10, 110 and the abutment teeth 20, 120 is not limited to zirconium dioxide (zirconia). Aluminum oxide (aluminum oxide) or cerium oxide, cerium oxide, cerium oxide, magnesium oxide, cerium oxide or the like can also be used.

The implants 10, 110 and the abutment teeth 20, 120 may also be formed of a metal material such as titanium or a titanium alloy.

The material forming the locator 40 is not limited to titanium excellent in bioaffinity. Titanium alloys can also be used. The titanium alloy may be, for example, an alloy of titanium and aluminum. The positioner 40 may be formed of an elastomer material such as a resin (rubber). The number of the teeth 41 of the positioner is not limited to three. It can also be in the form of 2 pieces or 4 pieces or more.

The positioning body 87 is not limited to a synthetic resin, and may be formed of an elastic material such as rubber. When the positioning body 87 is formed of rubber, it can be formed into a complete ring shape without a slit.

The positioning body 87 can also be formed of a metal material. At this time, the thickness of the radial direction is reduced by forming the positioning body 87 into a C-shape, and the radial direction is elastically deformable.

The material forming the positioning pins 30, 130 or the locking nuts 50, 150 can be appropriately changed.

The common rotation restricting hole portion and the common rotation restricting shaft portion are not limited to the parallel two faces 16A, 31B. The common rotation restricting hole portion and the common rotation restricting shaft portion may be non-circular shapes.

Instead of the parallel two faces 16A, 31B, a polygonal hole portion, a polygonal shaft portion, and the like may be formed.

The locking bushing is not limited to the locking nut 50 that forms the screws 51, 52 on the outer circumferential surface and the inner circumferential surface, respectively. The locking bushing may be locked to each of the through hole 24 of the abutment teeth 20, 120 and the body portion 30A of the positioning pin 30.

In the implant 5, the screw 51 outside the lock nut 50 is screwed (locked) to the screw 25 in the through hole 124 of the abutment tooth 20, but is not limited thereto. A drop surface 125 may be formed instead of the inner screw 25, and the lock nut 50 may be replaced with a lock nut 150.

In the implant 105, the end surface 150A of the locking nut 150 abuts (locks) the falling surface 125 of the abutment tooth 120, but is not limited thereto. An inner screw 25 may be formed instead of the drop surface 125, and the lock nut 150 may be replaced with a lock nut 50.

In the implant 5, the positioning pin 130 can also be used instead of the positioning pin 30. In the implant 105, the positioning pin 30 can also be used instead of the positioning pin 130.

The implants 10, 110 are not limited to those having a thread cutting function at the base end (self-tapping screw type). The implant 10, 110 can also have no screw cut The function (general type).

The implants 5, 105 are not limited to use in the case of dental treatment. Fracture treatment methods or implants 5, 105 using implants 5, 105 can also be used in artificial joints.

10‧‧‧ implant

14‧‧‧Conical hole part (fitting hole part)

17‧‧‧Protrusion (rotation prevention hole)

80‧‧‧ Implant-mounted implanter (implant implanter)

81‧‧‧Motor Connection

82‧‧‧ implant connection

83‧‧‧Alignment shaft

84‧‧‧Rotating transmission shaft

84A‧‧‧Ditch Department

85‧‧‧ Positioner (variable diameter)

Claims (8)

An implant implanter is inserted into a central hole of the implant when the implant is embedded in the bone to transmit a rotational force from the driving source, including: a collimating shaft portion, and an outer diameter a taper that is narrowed toward the front end; and a rotation transmitting shaft portion that is formed in a non-circular shape, and the collimating shaft portion is a fitting hole portion that is fitted into the center hole and has a tapered inner diameter that is reduced in the depth direction, and the rotation conveys The shaft portion is fitted into the center hole to prevent a rotation preventing hole portion that is coupled to the rotation of the abutment teeth of the implant. The implant implant of claim 1, which has a variable diameter portion whose outer diameter can be changed, wherein the variable diameter portion is a preventive fall-off hole that is engaged with the center hole to prevent the abutment teeth from falling off. unit. The implant implant according to claim 1 or 2, wherein the collimating shaft portion and the rotation transmitting shaft portion are formed at positions different in the axial direction. The implant implant of claim 1 or 2, wherein the collimating shaft portion and the rotation transmitting shaft portion are formed at the same position in the axial direction. An implant comprising: an implant body, a tapered fitting portion having a reduced inner diameter in the depth direction; and a portion of the central hole formed by the non-circular rotation preventing hole portion; The base body is formed with a tapered fitting fitted to the fitting hole portion a shaft portion and a rotation preventing shaft portion fitted to the rotation preventing hole portion, wherein when the implant is embedded in the bone, the implant implanting device for transmitting the rotational force from the driving source is inserted into the center hole The fitting hole portion is fitted with a collimating shaft portion having the same shape as the fitting shaft portion, and the rotation preventing hole portion is fitted to the rotation transmitting shaft portion having the same shape as the rotation preventing shaft portion. The implant according to claim 5, wherein the abutment body includes: abutment teeth, the fitting shaft portion, the rotation preventing shaft portion, and a through hole formed along the axial direction; the positioning pin having: insertion In the shaft main body portion of the through hole and the common rotation restricting shaft portion, the common rotation restricting shaft portion is engaged with the anti-rotation shaft portion having a larger diameter than the shaft main portion and the common rotation restricting hole portion of the center hole. Rotating around the shaft; the locking bushing is locked to the through hole and the shaft body portion; and the retainer is engaged with the anti-drop shaft portion and the anti-drop hole portion to limit the positioning pin to the aforementioned The movement of the implant. The implant according to claim 5 or 6, wherein the pressure-resistant portion including the fitting hole portion and the fitting shaft portion and the rotation preventing portion including the rotation preventing hole portion and the rotation preventing shaft portion are formed Different positions in the direction of the axis. The implant according to claim 5 or 6, wherein the pressure-resistant portion including the fitting hole portion and the fitting shaft portion and the rotation preventing portion including the rotation preventing hole portion and the rotation preventing shaft portion are on the shaft The direction is formed at the same position.