Inoue Yuki, Kuroda Yuki, Yamanoi Yusuke, Yabuki Yoshiko, Yokoi Hiroshi
Graduate School of Informatics and Engineering, The University of Electro-Communications, Tokyo, Japan.
Center for Neuroscience and Biomedical Engineering, The University of Electro-Communications, Tokyo, Japan.
Cyborg Bionic Syst. 2024 Jul 15;5:0141. doi: 10.34133/cbsystems.0141. eCollection 2024.
In recent years, the functionality of myoelectric prosthetic hands has improved as motors have become smaller and controls have become more advanced. Attempts have been made to reproduce the rotation and flexion of the wrist by adding degrees of freedom to the wrist joint. However, it is still difficult to fully reproduce the functionality of the wrist joint owing to the weight of the prosthesis and size limitations. In this study, we developed a new socket and prosthetic hand control system that does not interfere with the wrist joint motion. This allows individuals with hand defects who previously used prosthetic hands with fixed wrist joints to freely use their remaining wrist functionality. In the pick-and-place experiment, where blocks were moved from higher to lower locations, we confirmed that the proposed system resulted in a lower elbow position compared with the traditional prosthesis, and the number of blocks transported increased. This significantly reduced the compensatory motion of the elbow and improved the user's performance compared with the use of a conventional prosthetic hand. This study demonstrates the usefulness of a new myoelectric prosthetic hand that utilizes the residual functions of people with hand deficiencies, which have not been utilized in the past, and the direction of its development.
近年来，随着电机尺寸变小和控制技术更加先进，肌电假手的功能得到了改善。人们尝试通过增加腕关节的自由度来重现手腕的旋转和弯曲。然而，由于假肢的重量和尺寸限制，仍然难以完全重现腕关节的功能。在本研究中，我们开发了一种新的接受腔和假手控制系统，该系统不会干扰腕关节的运动。这使得以前使用固定腕关节假手的手部缺陷患者能够自由使用其剩余的腕部功能。在将积木从较高位置移动到较低位置的抓取和放置实验中，我们证实，与传统假肢相比，所提出的系统使肘部位置更低，并且运输的积木数量增加。与使用传统假手相比，这显著减少了肘部的代偿运动并提高了用户的表现。这项研究证明了一种新型肌电假手的实用性，该假手利用了手部缺陷患者过去未被利用的残余功能及其发展方向。
