SU1109150A1 - Method and apparatus for producing carrying elements of prosthesis of extremities - Google Patents

Abstract

1. The method of obtaining carrier sleeves, limb prostheses, including fixing on the stump the workpiece from textile reinforcement, impregnating it with a polymer binder and forming the liner seat ring, which is so necessary to increase the strength of the bearing sleeves and eliminate burns of the stump in indium - to a mental prosthesis, the impregnation of the textile reinforcement with the polymeric binder is carried out in two stages: first, a layer of the polymeric binder is worn onto the workpiece, then the resulting semi-finished product is removed from the stump and finally it is impregnated with the help of a device in which the cavity of the elastic forming element is connected to the cavity of the hermetic body, after which the landing ring of the carrier sleeve is formed. 2. A device for forming a reinforced hollow article made of polymeric materials, including a base, a sealed body mounted on it, connected by a branch pipe to a pressurized medium supply system, an evil forming C element located on one end of the forming element impregnating ring sealed chamber with means of fixation of the workpiece, connected by a nozzle with a feeding system. And a binder under pressure, and placed a nozzle from its opposite end to determine the moment and at the end of the impregnation process, in order to expand the technological capabilities of bl and simplify the rigging when making a prosthetic limb liner, the elastic forming element is fixed relative to the inner surface. billets with the help of elastic spacing plugs placed at the ends, one of which forms the inner wall of an annular sealed chamber installed with a gap relative to the hermetic body, and is made with a hole connecting the elastic cavity forming element with a cavity sealed housing.

Description

3, the device according to claim 2, characterized in that the impregnating hermetic annular chamber is installed with the possibility of changing the position in height by means of telescopic supports mounted on the base.

4, Device for flanging hollow products, including two cantilever profiled rollers mounted on holders mounted

on carriages placed on the spindle with the possibility of changing the distance between them, which is different in that, in order to ensure the forming of the seat ring

limb prosthesis made of polymeric reinforced material with a smoothly changing curvilinear profile, the holder is fixed on the carriage so that it can be rotated by means of a ball joint, and the profiled roller is located relative to the carriage at a distance smaller than its radius,

5. The device according to claim 4, wherein each profiled roller is provided with an electrical resistance heater placed on a fixed current collector and connected to a power source.

The invention relates to the field of prosthetics, specifically to methods of molding from a polymer reinforced material supporting limb droths, including the molding of a prosthetic seat ring (at the thigh sleeves), and to devices for forming a reinforced hollow article from

polymeric materials, as well as devices for flanging the product with. curvilinear profile for use in the implementation of this method.

A known method for producing limb-bearing prosthetic liners includes attaching a preform of textile reinforcement to the stump, impregnating it with a polymeric binder. and molding the liner seat ring 1.

A device for forming a hollow product made of polymeric materials is known, comprising a base, a sealed body mounted thereon, connected by a branch pipe to a pressurized working medium supply system, an elastic forming element located on one end of the forming element an impregnating annular sealed chamber with means for fixing the workpiece pipe with a binder supply system, under pressure, and placed from its opposite

end pipe for determining the end of impregnation.

It is also known a device for screening hollow articles, including

two cantilever rollers,. mounted on holders mounted on carriages placed on the lead screw with the possibility of changing the distance between them SPZ.

However, the liner obtained in a known manner is not strong enough and this process does not exclude the possibility of stump burns.

The known devices for forming a reinforced hollow polymeric article are limited in their technological possibilities, and the design does not allow them to be used for individual purposes.

prosthetics.

As regards the device for flanging hollow articles, it also does not provide for the molding of the limb prosthesis ring from

polymer reinforced material with a smoothly changing curvilinear profile.

The aim of the invention in part of the method is to increase the strength of the carrier sleeves and the elimination of stump burns during. individual prosthetics.

The purpose of the invention. Parts of the device for forming a reinforced gold product made of polymeric materials are the expansion of technological capabilities and the simplification of the design of equipment in the manufacture of a prosthetic liner for limbs. The aim of the invention in the part of the device for flanging hollow articles is to ensure the molding of the limb prosthesis ring from polymeric reinforced material with a smoothly varying curvilinear profile. The goal of the method is due to the fact that in the method including fixing a textile reinforcement on a cult, impregnating it with a polymer binder and forming the liner seat ring, according to the invention, impregnating the textile reinforcement with a polymer binder then : first on the stocking pretsvari. A layer of polymer binder is applied, then the obtained semi-finished product is removed from the stump and finally impregnated with a device in which the cavity of the elastic forming element is connected to the cavity of the sealed body, after which the bearing ring is formed. The goal in part of the device for forming is carried out due to the fact that in it, including the base, a sealed body mounted on it, connected by a branch pipe to the working medium supply system under pressure, an elastic forming element located from one end of the forming element an impregnating ring, sealed chamber with means of fixing the workpiece, connected by a pipe with a binder supply system under pressure, and a pipe located at its opposite end to determine the moment According to the invention, the end of the impregnation process, the elastic forming element is fixed relative to the inner surface of the workpiece by means of elastic spacing plugs placed at the ends, one of which forms the inner wall of the ring of the sealed chamber, mounted with a gap relative to the sealed housing, and made with an opening that connects the elastic cavity. 04 forming element with a cavity sealed housing. The impregnation is hermetic, the chamber is mounted with the possibility of changing its height position by means of telescopic supports mounted on the base. The goal set in part of the flanging device is due to the fact that it includes two cantilever profiled rollers mounted on holders mounted: on carriages placed on the lead screw with the possibility of changing the distance between them, according to the invention, the holder is fixed on the carriage can be rotated by means of a gaar joint, and the profiled roller is located relative to the carriage at a distance smaller than its radius. In addition, each profiled roller is provided with a resistance electric heater placed on it at a fixed current collector connected to a power source. FIG. 1 shows a device for forming a reinforced hollow article such as a sleeve of the prosthesis in a sectional view, front view; in FIG. 2 is a flanging device, a plan view; in FIG. 3 shows section A-A in FIG. 2; in fig. 4 is a view B in FIG. 2. A device for forming a hollow product made of reinforced polymeric materials — includes a base 1, a sealed, transparent body 2, with a branch pipe 3 and a working medium supply system 4 under pressure, controlled by pressure gauges 5 and 6, an elastic hollow forming element 7, an annular impregnating chamber 8 with means of fixing the workpiece 9 in the form of spacer plugs 10 and 11 with handles 12 and 13, mounted on telescopic supports. pax 14 with screws 15 mounted on the base 1. One of the spacer plugs 10 is installed with a gap relative to the hermetic case 2 and is made with an opening 16, which communicates the cavity of the elastic forming element 7 with the cavity of the hermetic case 2. The sealed impregnating annular chamber 8 is connected to the pipe 17 binder 18 pressure feed systems. On the outside, chamber 8 is equipped with an electric heater 19. In expansion plugs 511 10 and 11, a branch pipe 20 for determining the end of the impregnation process is sunk into the cup-shaped element 21 inserted with the seal 22 into the central hole of the base 1, System 4 is equipped with working valves 23 and 24 media into the chamber 8 with the binder 18 and the housing 2. The housing 2 through the rubber ring 25 is tightly fixed on the base 1 of the composite half-rings 26, filled, for example, from a PCB. The device for removing hollow articles includes two cantilever profiled rollers 27 and 28 mounted on holders 29 and 30 with ball joints 31 and 32 assembled from two halves fixed by screws 33 and mounted on carriages 34 and 35 placed on the lead screw 3 s. right and left cuts, separated by a lead 37 and thrust nuts 38 and 39, B profiled rollers 27 and 28 are placed on fixed current collectors 40; electric resistance heaters 41 connected to a power source, in the circuit of which the temperature indicator is connected stages 42 and controller 43. To the end part of the carriage 34 is fastened the handle 44. According to the invention a method of manufacturing sleeves limb prostheses is carried out as follows. Textile fittings in the form of a stocking. fixed to the cult, then the binder is impregnated with the binder not to its full thickness and dried. The obtained semi-finished product is removed from the stump and installed on the device on which the final impregnation of the binder under pressure is carried out. After removal of the product, the bearing ring of the carrier tube is formed. The operation of the device for forming the reinforced hollow article is as follows. 1c, preformed preform 9, which was removed from the stump, is fixed together with the elastic forming element 7 inserted into it with the help of plugs 10 and 11 in such a way that one end is clamped relative to the bowl-shaped element 21 in the base 1, sealed with a ring seal 22, and the other relative to an annular impregnating chamber 8. Then, using screws 15, fix the position of the gauge 8 of measure 8 on the telescopic supports 14. Finally, connect the feeding system of the binder 18 through the nipple 17 into the chamber 8, having previously tightly fixed the housing 2 with rubber After the electric heater 19 is turned on and the heating temperature stabilizes, the binder turns on the working medium supply system 4 to create the same pressure in the cavity of the elastic forming element 7 and the cavity of the housing 2 outside the workpiece 9. At the same time, the operator 23 and 24, create pressure on the binder's mirror in the impregnation chamber 8, ensuring the impregnation of the workpiece 9 through its end under pressure from top to bottom. After the occurrence of a certain amount of binder in the nozzle 20, the pressure of the working medium, measured by the pressure gauge 5, is somewhat increased to eliminate possible influxes from the inner side of the workpiece 9. After the impregnation process, determined by the presence of the binder in the nozzle 20 without air bubbles , the workpiece is held to ensure its skeleton. Then it is removed from the device and passed to the flare. The flanging device operates as follows. Rotate the driver 37 to the right or left to set the required clearance by the profiling rollers 27 and 28, based on the wall thickness of the workpiece 9. The electric heaters 41 are turned on and the device is held until the binder is stabilized depending on the type of binder and ensures its softening. Then the operator starts the rollers 27 and 28 from the edge of the workpiece 9 and, holding the device by the handle 44, rolls it up to the preset configuration of the manipulator with the rollers 27 and 28, when running around the perimeter. The mounting of the holders 29 and 30 on the ball hinges 31 and 32 ensures in each section of the workpiece 9 a predetermined position of the rollers 27 and 28, and the operator manually changes this position to obtain a variable curvature of the seat ring. These devices make it possible to manufacture articles of the type of prosthetic liners, which are single articles, of which the individual is individual, having a different shape.

This method allows to increase the durability of the sleeves. And to exclude the possibility of burns of the stump during individual prosthetics with prostheses made of reinforced polymeric materials, as textile blanks.

1 109150

Correspondingly, use should be made of pieces of well-blocked tubular material obtained on rounding machines to form a gradual thickening of the wall to the distal stump.

Fi8.3 VadB Figure 4

Claims (5)

1. A method for producing load-bearing sleeves, limb prostheses, including attaching preforms of textile reinforcement to a stump, impregnating it with a polymer binder and forming a sleeve liner ring, which requires that, in order to increase the strength of load-bearing sleeves and eliminate burns stumps with individual prosthetics, impregnation of textile reinforcement with a polymer binder is carried out in two stages: first, a layer of polymer binder is first applied to the billet, then the resulting semi-finished product is removed from the stump and finally they are impregnated with a device using a device in which the cavity of the elastic forming element is connected to the cavity of the sealed housing, after which the seat ring of the carrier sleeve is formed. 2. A device for molding a reinforced hollow article made of polymeric materials, including a base, a sealed housing mounted on it, connected by a nozzle to a pressurized fluid supply system, an elastic forming element located at one end of the forming element of the prop — To an exact annular tight chamber f with by means of fixing the workpiece, connected by a pipe to the feed system. about a binder under pressure, and placed-! ⁴ 'cuttings from the opposite end of it to determine the moment of the end of the impregnation process, and the other is that, in order to expand technological capabilities and simplify equipment in the manufacture of a limb prosthesis sleeve, the elastic j-forming element is fixed relative to the inner 'surface of the workpiece by means of elastic spacer plugs placed in it at the ends, one of which forms the inner wall of the annular airtight chamber installed with a gap relative to the airtight housing, and is made with a hole connecting the cavity of the elastic forming element with the cavity of the sealed housing. 3. The device according to π. 2, characterized in that the impregnating sealed annular chamber is installed with the possibility of changing the position in height by means of telescopic supports mounted on the base. 4. A device for flanging hollow products, including two cantilevered profiled rollers mounted on holders mounted on carriages mounted on the lead screw with the possibility of changing the distance between them, characterized in that, in order to ensure the formation of the prosthesis seat ring limbs made of polymer reinforced material with a smoothly changing curved profile, the holder is mounted on the carriage with the possibility of rotation by means of a ball joint, and the profiled roller is located flax carriage at a distance less than its radius. 5. The device according to claim 4, wherein the each profiled roller is equipped with an electric resistance heater located in it on a fixed current collector and connected to a power source.