Quantitative Compensation Method for Prosthetic Socket Design Based on Eigenvector Method

Abstract

The invention relates to an artificial limb socket design quantization compensation method based on a feature vector method. The method comprises the steps that residual limb tissue influence factorsare designed by an artificial limb socket; according to individual information weight design in artificial limb specialist weight design, the specialist employment period, the technical grade and thelike for artificial limb socket design are simplified into quantizable indexes, a judgment matrix is calculated, and a feature vector corresponding to the largest eigenvalue is obtained as an estimated individual information weight vector; the comprehensive evaluation weight vector of the artificial limb specialist is obtained by multiplying the individual information weight vector by a specialistindividual information parameter index quantification matrix; the artificial limb socket soft tissue feature compensation index weight is obtained by summing a socket quantization compensation simplification table of each specialist and the weight product, and the socket quantization compensation simplified table is obtained by simplifying the socket design influence factor quantization compensation simplification table according to simplification standards; the artificial limb socket tissue feature compensation quantization model is obtained according to a compensation value corresponding tothe compensation index in the socket design influence factor compensation simplification standard.

Description

technical field [0001] The invention relates to a method for designing a prosthetic socket, in particular to a quantitative compensation method for designing a prosthetic socket based on an eigenvector method. Background technique [0002] Prosthetics are the most critical assistive devices used to make up for the limb defects of amputees to compensate for their loss of function, to restore some of their abilities, and even to return to society. According to the second national sample survey of the disabled, there are nearly 3 million people in need of prosthetics in my country, but the actual assembly rate is less than 30%. As the mechanical interface between the human residual limb and the prosthesis, the socket is one of the most important parts of the prosthesis. It not only needs to support the weight of the patient's prosthesis, but also transmits the motion information of the residual limb to the prosthesis. The design and fabrication of the socket directly affect th...

AI Technical Summary

Problems solved by technology

In the early 20th century, several commercial CAD / CAM systems for prosthetic sockets were developed abroad. Since the CAD-designed prosthetic sockets were only completed based on the shape of the residual limb of the subject and the subjective experience of the personal socket technician, the clinical fitting effect was not as good as that of the prosthetic socket. Not very ideal

[0006] Because the traditional socket design and manufacturing method is time-consuming, low in precision, labor-intensive, and requires repeated corrections to ensure the comfort of the patient, the comfort of the socket depends too much on the subjective experience of the maker, shape-taking techniques, and injection molding. Skills and other factors are highly subjective, so there are high requirements for the professional skills of rehabilitation physicians and prosthetic technicians

Although the current prosthetic socket system based on CAD / CAM technology has improved the traditional shortcomings of long time-consuming, low precision and high labor intensity, it is mainly designed based on the size of the residual limb socket, and is personalized for the abnormal characteristics of different residual limb tissues. Insufficient compensation methods, lack of rich socket design experience and technology accumulated by existing prosthetic technicians

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