可程式之人工全膝關節模擬磨耗機的研製

Design and Making of A Programmable Knee Wear Simulator

陳煌仁(Huang-Jen Chen)

指導教授 ： 廖峻德 ； 王士豪

中原大學/工學院/醫學工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300039

摘要

本研究在於設計並製作一可程式之人工膝關節模擬磨耗機。設計之概念基於可模擬人體的膝關節步態週期運動。用於輸入至模擬磨耗機之步態波形可由已知的資料提供參考，其中包含正常人、人工全膝關節重建之病患。實驗中，原始的波形與模擬機所得到的曲線隨即依線性迴歸與基本的統計法進行曲線密合度計算。分析結果顯示：模擬步態運動的輸出主要受到全程測試時間與機械可帶動輸入波形之匹配度所影響。而且，人工膝關節重建病人相對地易於執行高密合度的模擬。然而，完成測試的延遲時間對病人與正常人的輸入運動曲線相類似。此亦顯示模擬膝關節磨耗機可在預期時間完成指定運動模式。本模擬膝關節磨耗機提供一固定旋轉中心之彎曲-伸展運動，但部分仍與人體膝關節之生物力學不相合。因此，當人工股骨遠端向前滑移，會使顯示的負載力量上升。本研究藉由延長完成一個模擬測試次的時間，同時調整PID控制器對負載、彎曲-伸展、及半月板旋轉的一致性，明顯地降低負載力量的上升。此人工膝關節模擬磨耗機因此可做為評估產品之材質及生物力學之設計；更進一步可做為病人手術後，特別在材料反應、宿主反應、及其人工膝關節使用期限等相關研究之用途。

關鍵字詞：可程式的、膝關節模擬磨耗機、高密合度、旋轉中心。

關鍵字

可程式的 ； 膝關節模擬磨耗機 ； 高密合度 ； 旋轉中心

並列摘要

This work deals with a design and making of a programmable knee wear simulator (KWS). The main concept of the design is based upon the gait cycle of human knee movement. The input gait profile to KWS is provided by known data, which include normal people, patients with knee reconstruction. In the experiment, the initial profile and simulated curves thereafter perform the calculation of fitting process, according to linear regression and fundamental statistics. Analytical result has demonstrated that the output gait movement simulation is affected by the completion of testing time and the mechanical tolerance of the KWS to finish an input cyclic curve. Also, patients with knee reconstruction are relatively feasible to perform a simulation with high fitting rate. The delay of testing time to complete a simulation is similar for the input curves from normal people and patients. It implies that the movement of KWS may achieve an assigned program on time. Current KWS provides a flexion-extension movement with one fixed rotation center, which is partially incomparable to biomechanical contours. An uprising force is therefore generated as the femur condyles slide forwards. This irregular loading force is obviously reduced by extending a required time to complete a testing cycle, simultaneously, by adjusting PID control, which enhances the consistence among applied loading, flexion-extension and rotation of meniscus. This KWS is therefore a valuable tool for the evaluation of materials’ quality and biomechanical design of products. Furthermore, it can be applied for the post-operation studies, particularly on material responses, host responses, as well as the lifetime of knee prosthesis.

Keywords: Programmable, Knee wear simulator, High fitting rate, Rotation center.

並列關鍵字

Knee wear simulator ； High fitting rate ； Programmable ； Rotation center.

參考文獻

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