PROBLEM TO BE SOLVED: To provide an electric arm that can be formed with a simple structure, facilitates learning of operation and has reproductivity with high controllability.SOLUTION: An electric arm 1 comprises: a shape detection sensor 2 that is attached to a forearm part 3 of an upper-extremity amputee H and detects a shape of the forearm part 3 a second shape detection sensor 4 that is attached to an acromion 5 of the upper-extremity amputee H and detects a shape of the acromion 5 a control part body 8 that has a sensor signal receiving circuit 15 for receiving a sensor signal 14 to be output from the shape detection sensor 2 according to the shape of the forearm part 3, has a second sensor signal receiving circuit 17 for receiving a second sensor signal 16 to be output from the second shape detection sensor 4 according to the shape of the acromion 5 and has a control signal generating and transmitting circuit 19 for generating and transmitting a control signal 18 based on the received sensor signal 14 and second sensor signal 16 and a hand part 6 that is connected to the control part body 8 and includes arms 7a and 7b whose opening and closing are controlled on the basis of the control signal 18.COPYRIGHT: (C)2014,JPO&INPIT【課題】簡易な構成で構築することができ、かつ操作の習熟が容易で、制御の高い再現性を有する電動義手を提供することを課題とする。【解決手段】電動義手1は、上肢切断者Hの前腕部3に装着され、前腕部3の形状を検知する形状検知センサ2と、上肢切断者Hの肩峰5に装着され、肩峰5の形状を検知する第二形状検知センサ4と、前腕部3の形状に応じて形状検知センサ2から出力されるセンサ信号14を受付けるセンサ信号受付回路15、肩峰5の形状に応じて第二形状検知センサ4から出力される第二センサ信号16を受付ける第二センサ信号受付回路17、及び、受付けたセンサ信号14及び第二センサ信号16に基づく制御信号18を生成し、送出する制御信号生成送出回路19を有する制御部本体8と、制御部本体8と接続され、制御信号18に基づいてアーム7a,7bの開閉が制御されるハンド部6とを具備する。【選択図】図1
