Receiving cavity for lower limb prosthesis and preparation method thereof

Abstract

The present invention discloses a receiving cavity for a lower limb prosthesis and a preparation method thereof. An outer surface of a flexible receiving cavity main body closely fits with an inner surface of a rigid receiving cavity skeleton, a lower part of the rigid receiving cavity skeleton is connected with a connecting device, the connecting device is connected with a prosthetic knee joint component through a threaded connection member, the rigid receiving cavity skeleton is provided with a material removing region and a material reinforcing region, shapes, positions and thickness of thematerial removing region and material reinforcing region are determined according to biomechanical interface analysis and structural topology optimization, the flexible receiving cavity main body isprovided with gradient-distributed porous filling regions, and shapes, positions, filling structures and gradient distribution of filling percentage of the filling regions are determined according tothe biomechanical interface analysis of multi-gait residual limbs. A personalization degree of the receiving cavity can be significantly improved and the receiving cavity improves comfort and functiontransfer performance of users during use.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a socket for a lower limb prosthesis and a preparation method thereof. Background technique [0002] In recent years, the number of amputations caused by traffic accidents, natural disasters, cardiovascular diseases, diabetes and other diseases has been increasing. According to the "Major Data Bulletin of the Second National Sampling Survey on Disabled Persons", the total number of people with various types of disabilities in my country is about 82.96 million, of which about 24.12 million are physically disabled, and about 2.26 million are amputated, including lower limb amputations. Most of them. Prosthetics are an important means to help physically disabled users recover and return to society by compensating for the shape and function of their limbs. The prosthesis is mainly composed of three parts, that is, the supporting part that imitates the function of...

AI Technical Summary

Problems solved by technology

In the design process of the socket, the production personnel should constantly modify the socket model according to the user's try-on experience and their own experience. The whole process needs to make multiple temporary sockets for try-on. The whole design process takes a long time and costs a lot. high

Regardless of whether the final customized socket product is formed by sheet metal thermocompression or fiber-reinforced resin curing, the material of each part is completely uniform and uniform, and it is impossible to carry out further personalized design according to the user's residual limbs and their own needs.

[0005] Secondly, there are millions of physically disabled users in my country who need to install prosthetic sockets, but there are only more than 1,000 registered prosthetic technicians nationwide, which is far from meeting the needs of society

The high cost caused by the complicated design and manufacturing process of the prosthetic socket also makes many disabled users with economic difficulties unable to afford the cost of fitting the socket

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