HIP PROSTHESIS HAVING AUTOMATIC HIP JOINT AND KNEE JOINT

摘要

PROBLEM TO BE SOLVED: To provide a hip prosthesis with a self-driven joint wearable by a leg dissected person or a healthy person which has a controller and a driving mechanism installed within the prosthesis that drive the hip joint and the knee joint of the prosthesis actively according to walking information of a healthy-side leg so as to allow a wearer to walk stably.;SOLUTION: The hip prosthesis includes a hip socket 2 supporting the pelvis and the femoral region, shoulder straps (8 and 9), a hip joint driving mechanism 19 for swinging a prosthetic femoral section 21 attached to the outer circumference of the hip socket 2 around a hip joint axis 27 by means of a motor 22, and a knee joint driving mechanism 30 for swinging a lower leg pipe 38 arranged on the lower part of the prosthetic femoral region 21 around a knee joint axis 31 by means of a motor 34. A hip joint and knee joint control mechanism 40 controls stepping of the prosthesis by analyzing, by means of a control computer 41, angular velocity values of the healthy femoral part and lower leg part measured by angle measurement device (42 and 43) while walking and a detection result of grounding/separating of both the soles of the feet measured by pressure sensitive switches (44-49).;COPYRIGHT: (C)2009,JPO&INPIT