DE7631563U - Mixing container for a single pack for preparing an orthopedic bandage - Google Patents

Description

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G 76 31 563.4 July 29, 1977

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Reichhold Chemicals Inc., White Plains, N.Y. / USA

Mixing container for a single pack for preparing an orthopedic bandage.

The innovation relates to a mixing container for a single pack for preparing an orthopedic bandage one of Hand adjustable size using two resin forming liquids.

Orthopedic dressings are made from various curable foamed and non-foamed resin materials, the activated in various ways either before or after applying to the body part. The purpose of the so-called "Plastic plaster casts" consists in overcoming the known disadvantages of plaster of paris cast from a Paris cast »This one Techniques, however, are either related to how they are attached to the body part or how they are activated at the start of the polymerization reaction or in relation to the properties of the resulting orthopedic dressing not entirely satisfactory for the manufacture and use of such an orthopedic plastic bandage.

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For example, US Pat. No. 3,656,475 describes a plastic orthopedic bandage that is applied to an injured part of the body is drawn over the body part in the form of a tubular sheath made of knitted or warp-knitted fibers. An outer part of this Casing is made with a curable liquid resin composition by spraying on a layer of an activated and therefore already hardening polyurethane resin-forming mixture impregnated. However, the spraying or coating technique is a bit messy, and the use of a shell as a base fabric is not approximated to the usual way of applying a plaster cast, in which A roll of tape is used, the tension and strength of which is better used by the doctor when unwinding the tape and application to the body part of the patient can be controlled and influenced.

In the manner described in US Pat. No. 3,301,252, the patient's arm is first wrapped with a suitable gauze tape, and then a self-curing, on-the-spot curing polyurethane foam material is sprayed over it: the application technology is alien to a doctor, however, and foamed plastic bandages are quite bulky and sometimes insufficiently strong if not properly reinforced.

In US-PS 3,421,501 and 3,618,599 possibilities are described in which polymers curable initially by irradiation with ultraviolet light or with ultrasound are initially in woven or non-woven fibers are impregnated, which can be in the form of a tape. The dry impregnated tape is then wrapped on the body part in the usual manner, and then this body part is wrapped with ultraviolet radiation or ultrasonic energy is applied to cure the dressing in place. This by ultraviolet radiation curable resins have a very aggressive odor that the patient inhales during the curing process, and these two techniques worry the patient because he

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his body part of such an energy-emitting supply unit must suspend.

From US-PS 3,630,194 it is known that the tape from which the orthopedic bandage is made with a water-activated, curable resin composition is impregnated. The tape is rolled down on the patient's body part immersing the roller in water, which may contain the catalyst, and squeezing the roller to remove the excess Water applied.

If the finished orthopedic plastic bandage is to be air-permeable, there are many of the known technical possibilities for applying the resin-forming materials to a porous or woven base does not ensure that the meshes and pores in the Tissue will not be blocked by hardened resin.

It is evident, therefore, that in employing one or the other of the foregoing techniques the difficulty arises as well: that a uniform layer of the resin-forming materials must be applied to the base fabric; Difficulty in applying the correct amount of such materials to the fiber. There is also an uncertainty regarding the correct proportions of the resin-forming materials to be used and the correct timing and evenness of the Exposing the unactivated resin-coated dressings to heat, ultrasound, or ultraviolet radiation hardening devices with which the bandage formed must be treated. In addition, the doctor or technician has who has to put on such bandages has so many other primary duties and therefore wishes the pretreatment to be as straightforward as should be possible and that the application procedure must be as clean, simple and free of possible errors as possible.

It is therefore an object of the invention, the doctor to the formation of a

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orthopedic bandage to deliver a coiled tape, wel " ches he can wind up in the orphan known to him from the application of a plaster cast, and which one with a suitable one and yet can evenly coat a limited amount of pre-proportioned reaction resin materials that are already activated and are therefore in a hardening liquid state, so that hardening takes place within minutes at room temperature is completed after the dressing has been applied. The doctor can thus adjust the tension and arrangement of the applied to the patient Control bandage, after which the bandage cures automatically, without this together with the patient with a device that emits heat, ultraviolet light, or ultrasonic energy, or something similar.

According to a further development, all resin-forming reaction liquids should together with a roll of tape on which the usual Tape length is wound, pre-proportioned and packaged together and for single use to the doctor in a disposable container to provide. The resin-forming fluids are said to be immediately prior to the date of intended Use to be activated, and the tape should be sufficiently soaked or soaked with it, while the chemicals and the tape remain in the unopened pack. This will ensure that the tape is properly coated, and that it is regardless of the respective skills or the practice of the individual and without the possibility of error with regard to the amount or the proportions of the resin-forming raw materials. Also, there should be any messiness when mixing and using the chemicals be avoided.

Packages of resin-forming liquids that are activated and applied to a tape within a package are known for other purposes. For example, US Pat. No. 3,864,492 shows such a pack for preparing adhesive strips

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for manufacturing purposes. Removing excess resin but of the tape, as is necessary for the present purposes, is not effected there, and besides, that is soaked Tape also not removed from the pack in roll form.

Such activation and wetting of the tape must be quick and can be done conveniently and with reproducible quality. But then a number of such packs went to the doctor's office at once or to be delivered to the hospital for future use, the packaged chemicals must be stored under normal storage conditions have a long shelf life and the normally occurring temperature fluctuations and movements can withstand during conveyance or shipping. It It is therefore also the object of the invention to provide special resin-forming liquid materials and mixtures for this purpose.

The invention also enables the mixing of the chemicals and wetting of the tape on a relatively inexpensive tape-like manner Machine, the cycles of which can be measured and repeated and which are part of the standard equipment of a Hospital or doctor's office equipment. The machine mixing and wetting cycles are in accordance with the invention executed.

In order to adapt the pack for such mixing and wetting processes carried out by the machine, a container is used according to the invention provided, which has certain properties and in which the tape and each of the resin-forming reaction liquids one have a certain disposition and orientation.

Containers with special properties for mixing purposes are known, but none of these are suitable for practicing the present Invention particularly suitable. U.S. Patent No. 3,521,745 shows a single package in which initially separate components are carried out

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Perforating separate breakable compartments using the expansion property of the outer container and an internally arranged ejection mandrel or plunger are mixed. U.S. Patent 3,321,097 describes a bottle with separate compartments which communicate when a valve is connected to a valve stem which can be actuated from outside the bottle is opened. In US Pat. No. 3,321,917, one of the components to be mixed is disclosed initially in a separate inner container-like Structure held, which has a funnel-shaped division, which leads to a narrow opening that the structure on his upper end opens, the narrow exit being initially closed by a vertically movable valve, the shaft of which is attached to the is attached to the upper end wall of the outer container. The valve is through an accordion-like folded wall part of the outer Container opened, which causes the valve stem to move upwards. The pack is then turned over so that the first liquid component, which is located in the inner container-like structure, with another liquid component mixes in the outer container. However, none of these packages or containers have tape or reel of tape or intend the build-up or wetting of a tape reel in it. In this respect, the container and pack according to the invention differ compared to all arrangements and properties of the known containers and packs.

The method for producing a roll of tape for application to a body part to form an orthopedic bandage thereon is characterized according to the invention by mixing the resin-forming starting materials together in liquid form to trigger the hardening of the same, wetting the tape uniformly over its length with the hardening liquid and removing the excess liquid from the tape _f wherein at least the steps of wetting the tape and removing

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of the superfluous liquid from this within a substantially closed container and the tape siah rolled up in the container after the step of removing the superfluous liquid is located and the container is then opened and the soaked roll of tape removed from it will.

So it becomes a collection of a liquid-permeable bandage, preferably a woven or knitted fiberglass bandage wound on a cage-like cylindrical spool that is removable is mounted in a container, with the tape reel and the various parts of the container in that to be described later Made of a plastic material such as polypropylene or polyethylene or another material which is different from the resin-forming raw materials, which are also in the container, are not attacked, are made. The roll of tape is attached and extends between the upper lock? of the container and the top of an inverted funnel-like "peripherally extending partition wall defining the interior of the container divided into essentially two areas, i.e. a lower mixing area and an upper moistening and extraction area.

The open circular area of the bottom of the cylindrical reel of tape surrounds the narrow neck opening through the top the funnel-shaped partition on which the coil is mounted and the similar portion of the upper end of the cylindrical The hollow core of the coil is closed by the top of the container so that when the container is turned over and rotating its central axis in that to be described later Wise liquid poured through the narrow neck opening of the funnel into the core of the tape'j 'and due to centrifugal force passes through the cage-like tape reel and the liquid-permeable tape and thus the tape with the fluid

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liquid soaks. The outside diameter of the spool of tape is smaller than the inner diameter of the container, leaving a peripherally extending collection area for the due the centrifugal force is formed by the liquid passing through the belt. When the container is then erected and is rotated again around its axis, all superfluous liquid in the bandage or the band, which would otherwise be the mesh of the material, from which the napkin is made, stretches and closes, removed by centrifugal force and placed on the inner wall of the container deposited in advance within this peripheral liquid airanel area. When the spinning stops, the extracted one flows excess liquid due to gravity on the inner peripheral wall surface of the container down and is collected in a V-shaped peripheral zone passing through the outer surface of the inverted funnel-shaped partial wall and forming the inner wall surface of the container to which the outwardly protruding lower end of the partial wall extends.

The "container" described so far is actually an outer container of the package unit. An inner container is provided in which a measured amount of one of the reaction liquids of the polymer system is stored before they become mixes with the correct amount of a second reaction liquid lying on the bottom of the outer container. Even though the inner container can be in the form of a separate package of thin plastic material, which is simply described in the foregoing If the lower region of the outer container is used, in a preferred embodiment it is a solid inverted cup-shaped Plastic container placed inside the mixing area and having an annular flange on its inverted Has bottom wall that is an interference fit within and from the bottom of the aforesaid narrow neck opening of the funnel-shaped Has partition. The open mouth of this inner container that

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facing downwards, acts as a valve seat and is closed by a flat valve-like shutter which is shown in the open opening is printed and a liquid-tight Forms closure.

The inner container valve is opened by movement of the valve stem or pack-activating rod open downwards. The rod goes through the inverted bottom of the inner container through, then through the core portion of the cylindrical tape reel and through the top of the outer container so that the Rod protrudes outward and by pressing on the same from outside the pack, the valve in the inner container is opened can be. The rod sits tightly when passing through the bottom of the inner container and through the outer container closure, so that a liquid-tight seal is formed at these locations.

The downward movement of the valve stem is controlled by a manually operated toggle clamp on an activator machine on the the pack is mounted when the orthopedic bandage is to be made actuated. The container is placed on a turntable and by the toggle clamp which engages the upper part of the upwardly protruding valve stem, pressed down against this.

When the inner container valve is opened, the contained reaction liquid becomes released and flows to the bottom of the outer container and mixes with the second reaction liquid. After carefully mixing these two liquids on the activation machine, the whole pack is passed through the machine upside down so that the mixed liquids flow through the above-mentioned funnel into the core of the tape reel. It is obvious, that the inner container must be moved out of its storage within the narrow neck opening of the funnel in order to to allow the liquid to flow through. For this reason

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are the relative tightness of the seats of the valve stem, the inner tank valve and the inner bottom ring, within of the corresponding openings selected so that with a downward movement the valve stem rod only moves the still closed inner container out of its seat and from the funnel-shaped one Neck opening is moved down to open the same. During the downward movement there is an outwardly protruding one peripheral rim on the downward end of the inner container against various upwardly protruding and • annular spaced stops on the bottom of the outer container so that further downward movement of the Valve stem rod opens the inner container valve.

Although the reaction liquids by turning the valve stem rod from the outside of a stationary outer container using the inner container and the valve parts as one Stirrer or by rotating the outer container relative to the stationary valve stem / element and the inner one Containers can be carefully mixed, is necessary in view of the subsequent centrifugal wetting and extraction operations, which are also carried out on the activator machine. preferably the whole pack around its longitudinal axis rotates to mix the reactants, preferably intermittently. To support this mixing process has the interior of the outer container next to its bottom end fixed, annularly spaced vertical Stirrer over which the liquids to be mixed run away during the mixing rotation of the packing. As can be seen, will the rotation of the pack is carried out during the mixing step, while the center longitudinal axis of the pack is about a sliding " fen angle, preferably tilted by 45 ° from the horizontal, this tilting is also effected by the activator machine.

After mixing, the activator machine automatically increases the angle of inclination to 180 °, at which the pack is turned over,

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so that the mixed liquids due to gravity through the funnel and into the core area of the cylindrical Reel flow as outlined above. The machine then rotates the package at high speed so that Due to the centrifugal force the liquid through the liquid-permeable Band material flows through it. After this wetting of the bandage or the band, the machine rotates the pack automatically back to its upright position, in which it is rotated again at high speed, so that by the effect of centrifugal force all excess liquid in the mesh of the strip material flows out.

The package is then removed from the machine and its top seal opened, whereupon the moistened tape is ready for use is done. In the preferred embodiment, possesses the tape reel has a press fit connection with the underside of the closure so that the reel is lifted out of the container, when the shutter is removed. The spool can remain on the buckle or can be disconnected from the buckle if desired will. Of course, the coil need not be connected to the underside of the closure, but can simply be in the container released when the lock is removed.

In preferred embodiments the reaction liquids are resin-forming monomers, the first component of the system being a liquid diisocyanate, including aromatic Diisocyanates such as toluene diisocyanate (TDI), aliphatic or cycloaliphatic diisocyanates or preferably methylenediphenyl diisocyanate (MDI) in any of its various forms, and with a polyol as the second component, preferably a dihydric or trihydric alcohol as the reaction product of diethylene or triethylene glycol, butylene glycol or any polyalkylene glycol, especially those with two to four Carbon atoms in the alkylene group and an alkylene oxide,

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preferably with two to four carbon atoms in the molecule such as ethylene oxide., propylene oxide or butylene oxide. A preferred polyol is the reaction product of glycerine and propylene oxide, where the material has an average molecular weight of about 260. Although the positions can be reversed, the diisocyanate component and the polyol component are housed in the cup-shaped inner container of the pack in the bottom of the outer container.

A plasticizer can be used, and this is preferred a lower dialkyl phthalate such as a dibutyl phthalate, although a plasticizer with longer alkyl groups such as dioctyl phthalate can be used. The plasticizer is preferably added initially to the polyol, but all or part of the Plasticizer can be mixed initially and stored with the diisocyanate component, or using a separate one Plasticizer elemental component as such can be obtained by substituting a more flexible or longer-chain polyol for the above-mentioned more solid or low-chain polyols are eliminated.

The catalyst used in the preferred embodiment is an organometallic component such as an organotin component, e.g. dibutyltin dilaurate, although other catalysts can be used, including amines such as triethylenediamine, or metal salts of organic acids such as Calcium octoate. Preferably the catalyst is a dibutyl single dilaurate. The catalyst is mixed and in with the polyol in the pack before polymerization.

Further features and expediencies of the invention emerge from the description of exemplary embodiments on the basis of FIG Characters. From the figures show:

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Fig. 1 is a perspective view of a pack for Making an orthopedic bandage according to the invention;

2 shows an enlarged sectional view along the package of lines 2-2 in Pig. 1;

Fig. 3 is a fragmentary and exploded perspective view Representation of the container components of the package to explain further details;

Fig. 4 are enlarged fragmentary views / partial ^"0 ^ for explaining a feature of the pack shown in Figure 1 in cross-section.

6 shows cross-sections of the package handling and method steps for producing a tape or a In-pack napkin for use in making an orthopedic bandage;

Fig. 10 is a perspective view of the prepared Tape as it is removed from the package;

11 shows a cross section through the soaked tape reel along lines 11-11 in Figure 10;

Figure 12 is an exploded perspective view of the spooled tape and fastener subassembly in the pack;

Figure 13 is an illustration of the manufacture of the orthopedic bandage using the apparatus of the invention soaked tape reel;

14 shows an enlarged cross-section through an orthopedic Bandage on a part of the body, such as that made using the tape prepared according to the invention is made;

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15 is a side view, on a reduced scale, in which to see int how a pack according to the invention activated on an activator machine;

Figure 16 is a front view of the machine shown in Figure 15 with the various inclination positions of the package during activation; and

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^f dener packs to illustrate various modified forms of the tape reel and the closure sub-units. Recording of different tape sizes.

Reference is first made to FIGS. 1-3. The package for making the orthopedic bandage, all the necessary Has materials for the resinous bandage, has a manually adjustable size and is denoted by the reference numeral 20 designated. Figures 1 and 2 show the pack and its contents in the delivered to a hospital or to a doctor's office Mold for later use in the manufacture of a single bandage, the container and the remaining Any residues after the dressing is made are thrown away. As mentioned earlier, the disposable pack stays closed, too during the activation of the content and the preparation for use and is only opened when the time comes for the Bandage is formed for the patient.

The dressing is formed by wrapping a napkin or tape around the patient's body part, the tape is moistened with the resin-forming liquid materials that are already activated and that are in air at room temperature during the few minutes it takes to form the bandage, continue to harden, after which the polymerizing liquid then hardens and stiffens the tape and thus the dressing. For this reason, a two-component resin system is used.

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det, and the preferred reaction ingredients are methylenediphenyl diisocyanate, which are modified to remain in the liquid phase at room temperature (77 ° F), such as Isonat 154-L from The Upjohn Company of Kalamazoo, Michigan and a polyol such as Plylit 34-402 from Reichhold Chemicals, Inc., White Plains, New York, which is a polyhydric alcohol. The proportions of these reaction monomers are 100 parts by weight of diisocyanate to 50 parts by weight of polyol. It becomes dibutyl phthalate such as the 48-550, which is also manufactured by Reichhold Chemicals, Inc., added to the polyol at 50 parts by weight, although all or any part of this plasticizer can be added to the diisocyanate component. The catalyst is Dibutyltin dilaurate such as the T-12 from M&T Chemicals Co. Division of American Can Company, New York, N.Y. on the order of 0.03 to 0.30, preferably 0.06 parts by weight that of the polyol component be admitted. In the preferred embodiment, where all of the plasticizer is contained in the polyol is the weight ratio of the diisocyanate material to the polyol and plasticizer material approximately 1: 1.

The Bana to be moistened with the reaction monomers / preferably made of knitted or woven material, so that the bandage after the molding is permeable to air. The preferred tape material is made from interwoven glass thread that is first desized and then coated with a binding agent or finish, such as the material disclosed in U.S. Pat. No. 3,793,6 and which is available from Carolina Narrow Fabric Co., Winston-Salem, North Carolina.

The total amount of the reaction liquid materials A and B contained in the pack 20 naturally depends on the Length and width and thus on the total absorption of the tape to be accommodated in the pack. The pack contains 20, which is described in connection with Figures 1-16, both

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game, an about 152 _r 5 cm long and about 5 cm wide tape (actual dimension 2.54 and about 1.9 cm) of the type described, and the package 20 contains about 155 g of the reaction liquids A and B, whereby a superset of the liquid is created in order to ensure that the tape is well soaked without the excess fluid flung out being returned to the core of the tape reel during the intended centrifugal penetration operation.

As shown in Figures 2 and 3, the package 20 has an outer container 21 with an upper closure lid 22 with a handle 23, an inverted cup-shaped inner container 24 with a valve 25 which normally closes the downwardly directed open end 24a, one vertical movable valve stem 26 for opening the valve 25, the stem having a removable dowel pin 26a, a partition 27 and a reel of tape 28 which together act as the packaging means for the materials for making an orthopedic bandage. The materials for the bandage are the two reaction liquid materials A and B of the resin system and the tape roll 29 wound on the tape reel 28. The packing means also comprises a plastic mesh tether 30 (see Figures 10-12) to _f which holds in position the coiled strip 29th

The materials from which the packing components are made are chosen so that they are not affected by the reaction liquids A or B, especially the diisocyanates, are attacked. Preferablyyltehen they are all made of polypropylene plastic material except for the valve stem 25 and handle 23 which are formed of metal .

The reaction liquids A and B, which react and polymerize begin when they are mixed together

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stored separately within the package, at least one of which is in a liquid-tight compartment. In In the embodiment shown, the reaction material A is in FIG contain the liquid-tight sealed space 31, which consists of the inside of the inner container 24 and its normally closed valve 25 is formed, and the reaction material B is on the inner bottom portion 32 of the outer Container 21 next to its bottom wall 21a, which as such also forms a liquid-tight enclosure, as to recognize is. The reaction liquids A and B are by lifting and opening the valve 25, which is normally frictionally engages and seals the open end 24a of the inner container, admixed, whereupon the liquid A flows into liquid B. The valve 25 is opened by downward movement of the valve stem 26 after the locking pin 26a is taken out, and it can be seen that the polymerization reaction from outside the package 20 in the With regard to the external approach over the upper ceiling lock 22 is triggered by the upper end 26b of the valve stem 26. The valve stem 26 can therefore also be used as the package activator rod are designated.

After the reaction liquids A and B are mixed in the lower region 32, the package 20 is turned over so that the mixed and now hardening liquid flows into the hollow core area 33 of the cylindrical tape reel 28, whereupon the package is rotated in the inverted position to force the liquid through the tape reel 28 due to centrifugal force and the band 29 passes through it and so the latter with the liquid is wetted and soaked, but from a comparison of Figures 2 and 3 it can be seen that the closed upward End wall 24b of inner container 24 has an axially protruding circular sealing ring 34 which frictionally

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moderately in a matching opening through a flange 35 of the partition wall 27 is formed, is received, and it can be seen that the inner container 24 from this seating engagement must be brought out so that the narrow neck center opening of the partition wall 27 is opened and the liquid therethrough into the Coil core area 33 can flow. It should also be noted that the valve stem rod 26, which by sawtooth-shaped Serrations 26c at their lower end 26d at a central one Sprue 25a of valve 25 is fixed by a central sprue or neck 36 provided with a central opening in the center the inner container end wall 24b passes therethrough. The valve stem 26 extends upwardly therefrom through a central neck of the upper closure 22 by which it has a sliding, yet liquid-tight fit. To open the valve 25 Therefore, the valve stem 26 must slide through the end neck 36 closing the inner container. The valve stem has one Friction fit in the neck 36, which is tighter than the friction fit between the inner circular container ring 34 and the separating • wall flange rim 35, so that when the valve stem moves downwards 26 in response to pressing on its outer end 26b all of the inner chamber 24 downwardly out of engagement with the Partition 27 is moved before the valve of the inner container 25 is opened. This creates a fluid flow connection established between the lower portion 32 of the outer container and the spool portion 33 before the valve 25 is opened.

The partition wall 27 has an inverted funnel-shaped wall part 38, which expands downward and has an outwardly protruding peripheral portion 38 a, which is connected to the inner edge of the side wall 21b of the outer container 21 is in connection and with its upper end 28b the tape reel 28 wearing. In this way, the outer surface 38c of the funnel-shaped part 38 forms together with the substantially cylindrical surrounding container structure, extending from the outer edge

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of the lower protruding part 38a extends upwards, a substantially V-shaped sump 40 for receiving the superfluous liquid reaction materials released during centrifugation, which will be described below.

The partition member 27 is not connected to the side wall 21b of the outer Container 21 formed in one piece, but the partition wall 27 forms a lower end wall of a container-like partition element 41, its upwardly protruding side wall 41a abutting against the inner surface of the outer container side wall 21b and its outwardly protruding peripheral edge 41b at its upper end against a similar protruding Opening edge 21c of the outer container 21 is seated. In this way, the position of the wall part 27 is determined as intended. Along the outer periphery of the container outer rim 21c is an upwardly extending peripheral portion 21d provided that the upper lid closure 22, the handle 2 3 and the locking pin 26a against premature displacement protects. In a preferred embodiment, the outer Edge of the excess liquid collecting area actually by the inner surface of the side wall 41a of the partition wall structure although the wall portion 41a is substantially coincident with the interior of the side wall 21b of the outer container 21.

To further describe the upper closure 22 and the tape reel 28, FIG. 2 shows that the tape reel extends between the horizontal circular ring portion 38b of the separating thread 27 and the underside of the upper closure 22, creating a peripherally extending liquid extraction area 42 which surrounds the tape reel and tape 29 because of the smaller diameter of the tape reel 28 compared to the diameter of the peripheral container side wall 41a.

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As can be seen from Figure 3, the tape reel 28 has a cylindrical shape cage-shaped structure, made by closely and parallel to each other in a circle spaced apart cage bars 43 is formed, which are between flat upper and lower End rings 44, 45 extend along their inner circumference. Naturally can use a suitable mesh structure instead of the cylindrically arranged cage bars 43 are used. Two oppositely arranged cage bars 43a have one A plurality of thicket-like tips or spikes 43b along their length to facilitate the plague-holding of the tape 29 the reel.

Of the upper end ring 44 of the tape reel 28 are two opposite each other arranged cover connecting pieces 46 protrude, which with a downwardly protruding circular ring 47 (Fig 2) frictionally engaging the underside of the lid 22 and ultimately the tape reel 28 with the lid Take out with the lid when opening the pack. The underside of the tape reel 28 is formed by its end ring 45 which defines the narrow neck opening Ring 35 of the partition wall 27 slidably surrounds and thus facilitates the removal of the tape reel.

The circular ring 47 of the closure 22 forms a side wall an upwardly projecting annular channel portion 48 of the closure within which the closure connectors 46 of the tape reel, as can be seen from FIG. The otherwise flat central region 22a of the closure 22 is reinforced by radial connecting struts 49, namely against deflection, and has an upwardly protruding peripheral edge 22b, which is in the open opening of the wall structure element 41 sits flush, as can also be seen from FIG. The shutter 22 also has an outwardly protruding peripheral edge 22c, which against a similar

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Ring 41b of the wall construction element 41 is seated.

As can best be seen from FIGS. 4 and 5, it has the outwardly extending peripheral edge 22c of the closure 22 on opposite handle receiving elements 50, one on each side of the lock, each having a transversely extending handle pivot pin 51, around which the corresponding end loops 23a of the handle 23 are guided and fastened. The handle loop 23a has a tangentially protruding part 23b, which corresponds to the plane of the C-shaped Main handle part adjusted or preferably by a distance equal to the loop diameter below the level of the C-shaped main handle is located. When the handle 23 is aligned rests flat against the cover 22 in the manner shown in FIGS. 1 and 2, then the tangentially protruding part lies 23b flat against the outwardly protruding peripheral edge 41b, and the handle receiving element 50 is offset upwards as with upward shoulder 52 to accommodate extension 23b, as best seen in Figures 2 and 4 recognize is. As can be seen from Figures 4 and 5, the length of the extension 23b is greater than the vertical height between the rim 41b and the top of the outer peripheral container rim 21d, so that when the handle is lifted in the direction of of the arrow in Figure 5, the extension 23b as a lever for releasing and lifting the lock 22 from its snug fit the opening of the container is used.

The manner in which the valve 25 for releasing the reaction liquid A in the inner container 24 will be described below for mixing with the reaction liquid B is opened after the downward movement of the valve stem 26 the inner Container 24 from the bulkhead opening ring 35 in that described above Way has moved out augöem engagement with this. An outwardly extending peripheral rim 55 that defines the

7631563 10/27/77

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surrounding downwardly facing open end 24a of inner container 24 lies against upper edges 56a of a series of annular spaced-apart support feet 56 from the bottom wall 21a of the outer container and radially protrude inwardly from the upwardly protruding peripheral side wall 21b in the manner shown in Figure 6, whereby a further movement of the valve stem 26 downwards the valve tll 25 from its snug fit with the opening of the inner container 24 moved out. With regard to the valve seat 25, the valve has an annularly extending and outwardly protruding retaining ring 25b, which fits in the by the downwardly directed open end 24a formed opening sits, and an outwardly protruding peripheral part 25c of the valve seat against the adjacent edge 55 of the inner container 24, so that a liquid-tight seal is formed. In terms of the way in which the valve 25 opens, it should be noted that the diameter of the valve circumference 25c is smaller is as the diametrical distance between the vertical inner ones Edges 56b of two opposite support feet 56 in each case.

To support the mixing process of the reaction liquids, what takes place in the lower region 32, the outer container 21 also has integrally formed and radially inwardly protruding vertical stirring blades 57, which are spaced apart in a circle and alternately between the support feet 56 in which can best be seen in Figure 3 are arranged. As shown in Figures 2 and 3, the one protruding outward lower edge 55 of inner container 24, as at 55a, notched along each peripheral location corresponding to FIG Place a stir bar 57 along side wall 21b of the outer container so that the inner container 24 is vertical in relation to it onto the stirring logs 57, but not freely in the circumferential direction j can move. The agitator blades 57 are arranged parallel to the center axis of the packing 20, with which the valve stem 26 coincides, and they extend essentially between the boyy

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the wall 21a of the outer container and the partition wall 27.

As shown in Figure 7 _# is the mixing of the reaction liquids within the region 32 by intermittently rotating the package 20 about its central longitudinal axis, which is preferably inclined at an oblique angle 45 ° from the horizontal is reached. Although the mixing can be done at slower speeds, it has been found that at about sixteen angular pulses of short duration, perhaps one to two seconds, on a turntable at which 2,200 revolutions per minute are reached, but not fully achieved because of the short duration thorough mixing of the reactants e. is achieved. The tilting of the packing and the presence of the stirring blades 57 prevent centrifugal suspension of the liquid and aid mixing.

After the end of the mixing and the thus beginning polymerisation the still unopened pack 20 is rotated further to the 180 ° position in which it is shown in FIG Way is inverted, and within a few seconds the mixed liquid flows through the funnel 38 through the bulkhead opening, which is formed by the funnel neck ring 35, and into the core region 33 of the cylindrical tape reel 28. After the flow takes place for a few seconds, the pack 20 is rotated again about its central axis, this time with 2,200 ümdrehunyerypro minute for five seconds, with the result that the liquid in the core region 33 through the meshes of the tape reel 28 -wheel of the liquid-permeable tape material 29 passes due to the centrifugal force and the belt 29 is completely and evenly moistened. To ensure a complete wetting, an abundance of liquid is provided, much of which is in the outer edge of the spool of tape the deposition region 42 flows. However, some liquid remains within the core area 33 of the tape reel.

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After the moistening step, the pack is placed in the Rgur rotated back into the upright position in which it remains stationary for a few seconds so that the Liquid will flow from the tape reel area 33 through the funnel opening 35 to the bottom of the outer container 21 and there can collect and so that the excess liquid from the peripheral wall 41a and the underside of the lid 22 in the Can drain collection area 40 for excess liquid. The pack will then revolve again at 2,200 revolutions per minute rotated about its central axis, so that superfluous liquid remaining in the belt 29 due to the centrifugal force, which would otherwise the meshes of the tape material would seal, is forced out. This superfluous liquid is initially on the is precipitated on the peripheral wall 41a and collects in the liquid collecting area 40 after the rotation has ended.

After this deposition, the liquid-impregnated or coated strip material is moist to the touch and can be wrapped around the body part of the patient to form an orthopedic bandage. The liquid is in the hardening process Condition and hardens within about ten minutes.

As can be seen in FIGS. 4 and 5, the pack is now opened by lifting the handle 23 and the lid is closed 22, which carries the moistened tape reel 29 with it in the manner shown in FIG. 10, is removed.

Reference is made to FIGS. 10-12 below. The plastic mesh tether 30 has a one end thereof slotted ear piece 60, the slot being denoted by the reference numeral 60a, with which it is with the opposite end is connected, which carries a finger strip 61 and a rod-like length adjustment part 62, which is in the eye 63 of the Öhrstückes 60 is received via the slot 60a. The strength of the tape 30 around the tape reel 29 is provided by the buttons

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64 adjustable, integral with the rod-like extension

62 are formed and their diameter is greater than that of the eye

63 is.

When the moistened roll of tape is removed from the package in the manner shown in Figure 10, the tape reel 28 be separated from the lid 22 by grasping the lower flange ring 45 with the lid 22 still in the other hand is held. If desired, the doctor can also use the tape unwind from the spool when it remains connected to the cover in the manner shown in FIG. Removed in both cases the physician first grasps the band 30 by grasping the finger strip 61 and pulling the extension member 62 back through the eye slit 60a. As shown in Figure 13, the doctor then wraps the moistened tape around the patient's body part, for example around his arm 65 by unwinding the napkin directly from the spool 28. In Figure 14 it is shown that the winding of three layers of tape on the patient's limb is sufficient to form an extremely effective orthopedic cast 66. Although it is not shown, the body part of the patient to be wrapped should first be covered with a type of knitted cover coated so that the resin does not come into direct contact with the skin.

It can be seen from FIGS. 17-19 that the use of differently designed cover locks with or without a spacer coil 70 (FIGS. 17 and 19) and the extension of the valve stem 26 (FIGS. 18 and 19) which may be necessary Pack of 20 bandages of various widths. As mentioned above, the tape reel 28 in Figure 2 is approximately 5 cm wide Tape wrapped around. If an approx. 2.5 cm wide tape is to be wound up, then, as shown in Figure 17, the same upper closure 22 can be used for this, but it becomes one inch wide (i.e. one inch high) spacer coil 70 is used, which has a lower end ring 71 has, with which it is above the partition ring 35, and one

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top end ring 72 which mates with wall ring 35 and lies between the underside of one inch tape reel 73 and the partition wall part 38b.

A high tower lock 74 as shown in FIGS is used instead of the fastener 22 when an approximately 7.5 cm wide band (Figure 19) or an approximately 10 cm wide Tape (Figure 18) should be used in the package. In FIG. 19, the underside 75 of the approximately 7.5 cm high tape reel is seated on the upper end ring 72 of the spacer coil 70, while in the embodiment shown in FIG. 18 no spacer is required for the approximately 10 cm high tape reel, the underside 76 of which is directly on the partition wall part 38b of the one shown in FIG Embodiment sits.

Apart from the fact that the central tower part 77 is approximately 5 cm higher, the tower lock 74 has essentially the same features like the closure 22. That is, an upwardly projecting circular channel ring 48 is provided into which the Lid connectors 46 of the 2.5, 5 and 7.5 cm tape reels are snugly received in the manner shown, and the closure 74 sits within the open opening at the upper end of the wall divider structure 41 as in the case of the closure 22. Although not shown, high tower latch 74 has a handle similar to handle 23 with a suitable latch removal member; similar to that shown in FIGS. The upward protruding peripheral wall of the tower lock 77 has a diameter that is considerably larger than that of the 7.5 cm and 10 cm high tape reels, so that one is superfluous Fluid-receiving area 78 is present within the tower, which is an upwardly extending continuation of the Deposition area 42 is within the upper area of the package above the partition wall 27.

7631563 10/27/77

As described in connection with Figures 6-9, should the pack for the production of the orthopedic bandage according to the invention are activated at the processing station when the Patient being treated. It is therefore intended that the activation steps described above be performed by an activation machine such as the machine designated 80, which is shown schematically in FIGS. 15 and 16, can be carried out and which is available as part of general hospital or doctor's office equipment.

As can be seen from FIG. 15, the pack 20 is first placed on a turntable 81 of a machine, which by a rotary motor 90 is rotated via a drive belt 91. A toggle clamp 82 which is operated by hand via a handle 83 is, however, presses the pack 20 downwards. With the exception of its vertically movable clamping head 84 is the toggle clamp 82 on a bracket 82a which protrudes from a tilting frame 85 to which the bracket is attached, in a fixed position assembled. The rotary motor 90 is also mounted on the tilting frame 85, but on the rear side thereof.

From the position of the toggle clamp 82 in comparison with the after above protruding end of the packing valve stem 26 can be seen that the downward movement of the ferrule head 84 the The shaft 26 is moved downwards and the pack is activated by the reaction liquids A and B with one another be mixed. It can also be seen from FIGS. 6-9 that the pressing of the pack down against the turntable 81 takes place via the valve stem 26 and the opened valve 25, which presses against the bottom wall 21a of the pack.

FIG. 16 shows the three positions of the pack 20 during mixing, moistening and peeling, the mixing and belt moistening positions drawn in dashed lines

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and are denoted by the reference numerals 20a and 20b, respectively. the initial arrangement of the package 20 and the same for deposition is shown by solid lines. the Tilt frame 85 is rotated between these three positions by a tilt motor, not shown, and in each of the three positions stopped.

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Claims (10)

Protection claims 1. Mixing container for a single pack for preparation an orthopedic bandage of a hand-adjustable size using two resin-forming Liquids, characterized by an outer container (21) for a resin-forming reaction liquid with a bottom wall (21a), one from the Bottom wall upwardly extending peripheral side wall (21b) forming an open top end of the outer container forms a liquid-tight seal on the upper end of the outer container, removable closure lid (22), a partition (27), which the outer container (21) in an upper and a divides lower area, a hollow core having a spool for supporting a cylindrical roller (28) with a liquid-permeable tape (29), wherein the hollow core is arranged concentrically to the side wall (21b) and with communicates with the open center of the partition wall (27) by making the diameter of the roll of tape smaller than the inner one Diameter of the peripheral side wall is and so in the upper area of the outer container is a liquid extraction area (42) around the roll of tape (28) through an inner container (24) for a second resin-forming liquid with a liquid-tight closure (25) at the lower end of the inner container, the inner container in the is arranged lower region of the outer container, through a the closure (22) of the outer container protruding Actuating member (26) for opening the valve (25) of the inner container by means of stirrer blades (57) inside which are intended for mixing of the outer container, the partition (27) defining a channel through which the liquid enters the hollow core is controllable. 7631563 10/27/77 Il 'III 2. Mixing container according to claim 1, characterized in that the partition (27) peripherally inside, of the outer container and has an inwardly facing surface (38c) having a funnel with an open End defined next to the bottom of the roll of tape. 3. Mixing container according to Anspruoh 2, characterized in that the peripherally extending wall an outwardly sealed surface 4la), which together having an inwardly directed surface portion (21b) of the outer container (21) extending peripherally Liquid collection area (42) under the underside of the roll of tape (28, 29) forms. 4. Mixing container according to one of claims 1 to 3 *, characterized in that the funnel-forming Wall (38c) comprises a peripherally extending vaginal wall portion separate from and mounted in the outer container which has a peripherally outwardly extending portion at its lower end that coincides with the interior of the peripheral side wall of the outer container is engaged, and with a conical portion extending upwardly and inwardly from the outwardly extending Part of extends and forms a funnel. 5. Mixing container according to one of claims 1 to 4, characterized in that a cage-like cylindrical Tape reel (28, 43) is provided, the core diameter of which is larger is than the narrow open end of the funnel, and that the tape reel is removably mounted on the wall forming the funnel and the tape material (29) is wound on the tape reel (28). 6. Mixing container according to claim 5 *, characterized in that the strip material comprises woven glass threads. 7631563 10/27/77 7. Mixing container according to claim 5, characterized in that a belt (30) consists of an open-meshed
Material surrounds the tape material (29) on the spool (26) and
holds on. 8. Mixing container according to one of claims 1 to 7, characterized in that the outwardly protruding lower end has an outer diameter substantially equal to the inner diameter of the inner surface portion of the peripheral Has side wall of the outer container. 9. Mixing container according to one of claims 1 to 8, characterized in that the coil is the narrow neck opening surrounding the partition. 10. Mixing container according to one of claims 1 to 9, characterized in that the height of the coil of the separating ·, wall extends to the closure of the outer container. 7631563 10/27/77