UA68660A - Method for manufacturing insert for prosthesis liner - Google Patents

Abstract

The method for manufacturing the insert for prosthesis liner consists on putting the isolating polyvinyl film onto the plaster pattern, the end-face of the film being sealed. The template with the opening for molding is put onto the distal part of the plaster pattern. Then the template is filled with silicone rubber with the catalyst. Upon polymerization, several layers of the knitted sleeve are put onto the pattern enclosed by the polyvinyl filmsheath. The silicone rubber with the catalyst is cast into the opening and the composition is spread throughout the workpiece of the liner. Upon vulcanization, the outline of the liner is adjusted to the required shape. The inserting piece with the pin is then placed onto the pattern of the stump between the layers of the knitted sleeve.

Description

Description of the invention

The invention relates to medicine, more precisely to prosthetics, and can be used in the manufacture of 2 lower limb prostheses.

There is a known method of manufacturing a liner for a sleeve of a limb prosthesis according to the application KO 99106705, Ab1E2/78, 2001, according to which the mold with the gasket is heated to 80107С, dipped into the prepared silicone composition, kept for 3-Ochv. depending on the size and thickness of the gasket, then the mold together with the gasket is removed from the composition and vulcanized at a temperature of 10057C for 20 minutes. 70 such inserts are used in the sleeves of prostheses of the lower limbs with locking for more reliable fastening of prostheses on the limbs.

Its disadvantages are the complexity of the technological process due to the need for high-temperature processing, which requires complex equipment and high energy costs for the manufacture of the insert.

There is also a known method of manufacturing a softening insert from silicone rubber (Technical information. Firm "OshchiYo Vosk" 2.1.3. "production of a softening insert from silicone rubber."), 12 according to which a softening insert is made from silicone rubber. For this, on an insulating polyvinyl alcohol film with a soldered end is put on the plaster model, a template with a hole is placed on the distal part of the plaster model, into which silicone rubber with a catalyst is poured, after polymerization of the rubber for 45 minutes, a silicone softening element (in the original "dence") is created. Six layers of an elastic knitted sleeve are placed on a plaster model with a softening element, a cover made of polyvinyl alcohol film is put on them, silicone rubber with a catalyst is poured into the opening of the cover, the composition is distributed over the insert blank and after vulcanization, its contour is modeled to the required shape. individual softening insert made of silicone k auchuku with a solid bottom.

This method is accepted as a prototype.

The disadvantage of the known method is the lack of reliable fastening of the silicone insert in the prosthesis. 29. The technical task of the invention is to increase the reliability of fastening an individual silicone insert.

This problem is solved by the fact that in the method of manufacturing an individual silicone insert, according to which an insulating polyvinyl alcohol film with a sealed end is put on a plaster model, a template with a casting hole is placed on the distal part of the plaster model, into which silicone rubber with a catalyst is poured, o after polymerization which for 45 min. a silicone softening element is formed. The necessary number of layers of a knitted sleeve are placed on a gypsum model with a softening element, a cover made of polyvinyl alcohol film is put on them, silicone rubber with a catalyst is poured into the opening of the cover, it is distributed, the composition is over the blank of the insert and after vulcanization, its contour is modeled to the required shape , the difference is that an embedded element with a pin is installed on the stump model between the layers of the knitted sleeve.

This makes it possible to manufacture an individual silicone liner with a locking device, which allows to increase the reliability of fixing the liner on the limb and in the prosthesis.

The essence of the invention is explained by the drawing, which shows the installation of the embedded element.

The method is implemented as follows. "

A cover made of polyvinyl alcohol film with a soldered end is put on the plaster model of the disabled person's stump. A template for casting from synthetic material is placed on it. Silicone rubber with a catalyst is poured into the hole of the mold and vulcanized for 45 minutes. After vulcanization, the template for casting is removed from the model, two layers of nylon knitted sleeve 1 are put on top of the softening element, the insert element 2 with pin 3 is installed. After that, four more layers of nylon knitted sleeve 4 are put on. film, into the hole of which a mixture of silicone rubber with a catalyst is poured, which 49 is distributed under a vacuum on a plaster model and the knitted covers of the workpiece are saturated with this composition. b The composition is vulcanized for 120 minutes, after which the resulting insert is removed from the stump model. A blank

Ge | cut along the landing ring and receive an individual softening insert made of silicone rubber with an embedded element and a pin, which are elements of the lock connecting the silicone insert with the sleeve of the prosthesis with the help of a pin. b 20 Installation of an embedded element with a pin between the layers of a knitted sleeve allows you to use an individual silicone insert not only as a softening element, but also as an attachment of the prosthesis to the body of a disabled person, which increases the reliability of the prosthesis during operation.

The production of more than 50 silicone inserts with fastening elements according to the proposed method, and further experimental prosthetics with a period of use from 2 months to 3 years testify to the reliability of the fastening elements and the improvement of the functionality of the prostheses of the lower limbs. Received positive in patient feedback.

Thus, the proposed method of manufacturing silicone inserts for the prosthesis sleeve allows to increase their reliability and functionality, which increases the level of social rehabilitation of disabled people with limb amputations. 60 b5

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Claims (1)

29 Formula of the invention "The method of manufacturing an insert for a prosthesis sleeve, according to which an insulating polyvinyl alcohol film with a sealed end is put on a plaster model, a template is placed on the distal part of the plaster model with a hole for casting, into which silicone rubber with a catalyst is poured, after its polymerization , on the plaster model with the resulting softening element, place the required number of layers of knitted and) sleeves, put on them a cover made of polyvinyl alcohol film, pour silicone rubber with a co-catalyst into the opening of the cover, distribute the composition over the blank of the liner and after vulcanization, model its contour to the required shape, which differs in that a 00 embedded element with a pin is installed on the stump model between the layers of the knitted sleeve. A r Ge) Official Bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2004, M 8, 15.08.2004. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. - and? (o) (ee) (o) (o) (42) 60 b5