RU2269981C2 - Device for development testing of objects of prosthetic-orthopedic articles - Google Patents

Abstract

FIELD: medical equipment.

SUBSTANCE: device development testing of objects of prosthetic-orthopedic articles has case provided with object adjusting unit, measurement aids, power loader, adapter made in form of cylindrical or cone-shaped cup. There is fitting unit for connecting adapter to object's adjusting unit of prosthetic-orthopedic articles or their imitators are disposed onto external surface of bottom of the cup. Through hole is made at side wall of adapter's case. The through hole changes to thread hole. Axes of the holes coincide and are collinear to axis of symmetry of device. Finger with threaded part is mounted in through hole. Threaded part goes into threaded hole to hold object of orthopedic articles or its imitator. Imitators of foot can be made and static and cyclical testing can specify geometrical parameters of those important elements of feet as pneumatic elements.

EFFECT: simplified design' improved reliability of operation.

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Description

The invention relates to medical equipment and is intended for testing during bench testing of prosthetic and orthopedic products (POI), in particular for the operational strength of prostheses, modules and their fragments.

Known devices for testing the operational strength, for example, technical solutions according to the author's certificates of the USSR No. 157824, 1477402, in which they test the full-size hip prosthesis for durability, simulating the law of the prosthesis loading. In these devices, the prosthesis is installed on the platform (either directly or through the supporting platform), while it is possible to rotate it around the horizontal and vertical axes.

The process of such testing is lengthy and expensive.

For a long time, the main method of testing newly developed prostheses of the lower extremities (PNC) was to conduct operational tests on disabled testers. This method of testing PNK allows you to obtain reliable information about such characteristics of products as functionality, ease of use of the prosthesis, including when wearing it, the presence of extraneous noise when walking, etc., which cannot be obtained by other methods. Therefore, this test method will remain the main one for a long time, especially when finalizing PNK products at the final stage. However, along with the above advantages, the method of testing orthopedic products for disabled testers, especially given the increased requirements in recent years for the strength and durability of PNK products, has such significant disadvantages as:

- the inability to determine the maximum allowable values of the bearing capacity of the tested products PNA;

- long duration (up to three years) of the terms for conducting full-scale tests of prosthetic and orthopedic products for the required cyclic strength, which in the current conditions is unacceptable.

Thus, the test method of newly developed PNA products on disabled test takers due to the above disadvantages leads to an increase in the time and cost of the process of developing these products with a simultaneous decrease in the reliability of the tested modules.

A similar device for selecting parameters of a lower limb prosthesis is known according to RF patent No. 2039538 (A 61 F, 2/76), in which there is a prosthetic device with an adjustment mechanism in two mutually perpendicular directions, a fixed base, an additional base, which is equipped with a vertical displacement drive with a displacement sensor, a power load monitoring sensor, in addition, an independent angular adjustment mechanism of the prosthetic device in two planes, perpendicular to one another and a horizontal plane, is introduced into the device a sensor of the angular position of the prosthesis receiving sleeve, as well as a displacement sensor for the pelvis of the disabled person, which is mounted on the orthopedic belt on the disabled person. Using linear and angular adjustments of the prosthesis device and controlling the drives, they achieve the optimal pressure distribution of both feet on the supporting surface of the platform.

The disadvantage of the described solution is that it is necessary to involve the disabled person for the tests, which lengthens the working time and increases the cost of working out, in addition, it is impossible to test POI modules or fragments of prostheses without using those elements that are not needed for this type of testing.

The closest analogue of the proposed device is the technical solution according to the patent of the Russian Federation No. 2039537 (A 61 F, 2/76), containing a support platform for placing the test prosthesis mounted on the platform with the ability to rotate around the horizontal and vertical axes, rotation mechanisms of the support platform, load loading mechanisms prosthesis, prosthesis attachment unit, measuring equipment, as well as a system for defining the law of loading the prosthesis during walking.

The disadvantage of this solution is its lack of standardization, as if it is necessary to test the individual constituent elements of the POI modules, it is necessary to use the entire prosthesis or module, while most of the POI is used as additional equipment, which is redundant and increases the cost of testing.

The objective of the invention is to unify the device for bench testing of POI objects by providing the possibility of working out both prostheses and POI modules and fragments of modules without using parts of prostheses and POI modules that are not subject to testing, which can significantly reduce the working time of newly developed POI modules and significantly reduce costs.

The essence of the proposed inventors is that in the device for bench testing of objects of prosthetic and orthopedic products, comprising a housing with an installation site of the object, measuring equipment and a power loader, an adapter is introduced, made in the form of a cylindrical or conical glass, on the outer surface of the bottom of which there is a fastening element for connecting the adapter to the installation site of the object of prosthetic orthopedic products or their imitators, while on the side wall of the adapter body is made kvoznoe hole passing in threaded, wherein the axis of these openings are collinear and coincide the axis of symmetry of the device, and is installed in the through hole with the threaded portion of the finger included in said threaded bore for holding the object orthopedic products or simulator.

The essence of the invention is illustrated by drawings, while:

figure 1 shows a General view of the device with installed on it a simulator of a fragment of the test object, in this case, pneumatic stops;

figure 2 is a view of this device along arrow A;

figure 3 is a view of the simulator of a fragment of the calcaneal zone of the pit stop on the remote element B;

figure 4 is a view of a special adapter with a shank of a fragment simulator installed in it in section CC, where:

1 - housing;

2 - a power loader;

3 - site installation site;

4 - measuring equipment;

5 - simulator of a fragment of the prosthesis;

6 - simulator of the power insert of the foot of the prosthesis;

7 - simulator of the pneumatic element of the foot of the prosthesis;

8 - pipe;

9 - refueling device;

10 - adapter;

11 - adapter housing;

13 - through nest;

14 - threaded socket;

15 - finger;

16 - the internal cavity of the adapter housing;

17 - threaded portion of the finger;

18 - shank;

19 - shank groove.

The proposed device comprises a housing 1 with an installation unit for object 3, with which a simulator of a fragment of the prosthesis 5 is mounted on the housing, for example, in the form of a fragment of the heel zone of the pit stop with a simulator of the power insert of the foot of the prosthesis 6 and a simulator of the pneumatic element of the foot of the prosthesis 7.

The device is mounted silo 2, interacting with a simulator of a fragment of the prosthesis 5 through the adapter 10, having a housing 11 made in the form of a cylindrical or conical glass, on the outer surface of the bottom of which there is a fastening element 12 for attaching the adapter to the installation site of the object 3.

A through hole 13 is made in the side wall of the adapter housing 11 and passes into a threaded hole 14; the axes of these holes coincide and are collinear to the axis of symmetry of the device.

The simulator of the fragment of the prosthesis 5 is equipped with a shank 18, the outer surface of which is identical to the surface of the inner cavity 16 of the adapter body 11 and that part of the outer surface of the finger 15 that passes through the said cavity 16. A finger 15 is installed in the hole 13 and the groove 19 of the shank 18, the threaded portion 17 of which included in the threaded socket 14. The finger 15 holds the simulator of the fragment of the prosthesis 5 from falling out of the adapter 10.

The device operates as follows.

For example, in the form of a fragment of the calcaneal zone of the pit stop, the simulator of the prosthesis fragment 5 is acted upon by the force-loading device 2 through the adapter 10. This makes it possible not to connect the connecting elements to the simulator of the prosthesis, which is structurally and technologically important in a situation where this fragment, for example, made of soft material.

The fragment simulator is equipped with a shank 18 and is held in the housing 11 of the adapter 10, for example, using a finger 15. The adapter has a fastener 12 for attaching it to the installation site of the object 3.

Thus, the proposed device for bench testing of POI facilities can significantly reduce the development time of the newly developed POI modules and significantly reduce the cost of this process. For example, in the case of working with a module such as a pneumatic stop, this allows, even before the module itself, to produce simulators of fragments of this foot, for example, its calcaneal and plantar zones, on simplified equipment, and through comparative static and cyclic tests, specify the geometric parameters of such important foot elements as pneumatic elements. In the same way, the most suitable materials for their manufacture can be selected. On other simulators of fragments, preliminary testing of other components of the pneumatic stop can be carried out, for example, a refueling device, a power insert, etc.

The proposed device for bench testing of POI facilities allows bench cyclic and static testing of not only standard POI modules, but also simulators of fragments of such modules without modifying the device.

All components of the proposed device can be made using well-known technologies from industrially developed materials.

Claims (1)

A device for bench testing of objects of prosthetic and orthopedic products, comprising a housing with an installation site of the object, measuring equipment and a power loader, characterized in that an adapter is made in the form of a cylindrical or conical glass, on the outer surface of the bottom of which there is a fastening element for attaching the adapter to the node installation of the object of prosthetic and orthopedic products or their imitators, while a through hole is made on the side wall of the adapter housing, turning into a cut bovoe, wherein the axis of these openings are collinear and coincide the axis of symmetry of the device, and is installed in the through hole with the threaded portion of the finger included in said threaded bore for holding the object orthopedic products or simulator.

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