System for designing individual artificial knee joint prosthesis based on parameter driving

Abstract

The invention relates to a system for designing an individual artificial knee joint prosthesis based on parameter driving, in particular to individual parameter driving of a femoral prosthesis model and belongs to the field of design of medical products. The system for designing the individual artificial knee joint prosthesis based on parameter driving is based on the interactive visual medical image processing and computerized design technique. According to the system for designing the individual artificial knee joint prosthesis based on parameter driving, a skeleton model is re-constructed by means of an interactive medical image processing module, and bone morphology parameter values are obtained through measurement; individual parameters of prosthesis design are analyzed through a femoral prosthesis individual parameter analyzing module; parametric modeling of prosthesis individual parameters is completed by establishing a parameter expression, establishing a parameter preliminary sketch, adding constraint, scanning and the like; the femoral prosthesis parameters are adjusted, and matching verification of the prosthesis design is conducted. According to the system, individual modeling of the prosthesis can be achieved by automatically modifying variables according to the actual physiological characteristic parameter of a patient, both design quality and design efficiency can be improved, products can be designed and manufactured according to the shapes and sizes of bones of different patients, and both production requirement and practical clinic requirements are met.

Description

technical field [0001] The present invention relates to the field of design of personalized medical implants, in particular to a parametrically driven design system of individualized artificial knee joint prosthesis based on interactive visual medical image processing and computer-aided design technology. Background technique [0002] At present, artificial knee replacement has become an effective method for treating osteoarthritis and restoring knee function, and has been widely recognized and accepted by the medical community. According to statistics, there are currently about 355 million patients with joint diseases in the world, and there will be 200,000 to 300,000 total knee replacements (Total Knee Replacement, TKR) in European and American countries every year. In 2013, the total number of hip and knee replacements in my country is about 500,000 cases, and the number of knee replacements increases at an average annual rate of 26.9% to 27.9%. However, studies have show...

AI Technical Summary

Problems solved by technology

The serialized and standardized prostheses commonly used at home and abroad are divided into several limited series and specifications, which are difficult to meet the individual needs of patients, and the matching is poor, which affects the long-term surgical effect and the service life of the prosthesis

However, the customized knee prosthesis researched at home and abroad is customized according to the individual patient. Although it can significantly improve the matching rate, the modeling efficiency is low, the cost is high, the reusability of the prosthesis is low, and the ability to continue research is insufficient.

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