Samuel K. Au;Peter Dilworth;Daniel Joseph Paluska;Hugh M. Herr
发明人:
Hugh M. Herr,Samuel K. Au,Peter Dilworth,Daniel Joseph Paluska
申请号：
US13348570
公开号：
US20120209405A1
申请日:
2012.01.11
申请国别(地区):
US
年份:
2012
代理人:
摘要：
An artificial foot and ankle joint consists of a curved leaf spring foot member having a heel extremity and a toe extremity, and a flexible elastic ankle member that connects the foot member for rotation at the ankle joint. An actuator motor applies torque to the ankle joint to orient the foot when it is not in contact with the support surface and to store energy in a catapult spring that is released along with the energy stored in the leaf spring to propel the wearer forward. A ribbon clutch prevents the foot member from rotating in one direction beyond a predetermined limit position. A controllable damper is employed to lock the ankle joint or to absorb mechanical energy as needed. The controller and sensing mechanisms control both the actuator motor and the controllable damper at different times during the walking cycle for level walking, stair ascent, and stair descent.
