Patent ID: 7314490
Filing Date: 2008-01-01
Classification: A61F

Abstract:
1. An actuated leg prosthesis for above-knee amputees, the prosthesis comprising: a knee member; first means for connecting a socket over the knee member; an elongated trans-tibial member having an upper end and a bottom end, the trans-tibial member defining a main longitudinal axis; second means for connecting an artificial foot under the bottom end of the trans-tibial member; a linear actuator having an upper end and a bottom end, the linear actuator including a motor coupled with a mechanism to impart a linear motion to the bottom end of the actuator with respect to the upper end of the actuator, thereby inducing extension or retraction of the linear actuator; third means for operatively connecting the trans-tibial member to the knee member; fourth means for operatively connecting the upper end of the actuator to the knee member; and fifth means for operatively connecting the bottom end of the actuator to the bottom end of the trans-tibial members; wherein extension or retraction of the linear actuator induces a corresponding rotation of the knee member relative to the elongated trans-tibial member.