An hydraulic heel-height adjustment device for a lower limb prosthesis has a foot- mounting component (18) for detachably mounting a prosthetic foot and a shin component pivotally connected to the foot-mounting component allowing angular adjustment of the foot-mounting component relative to the shin component about a heel-height adjustment axis. The relative angular position is set by an hydraulic piston (42) and cylinder assembly which has a chamber (40) in the shin component containing a piston (42) arranged to execute a translational movement in the chamber when adjustment is required. A bypass passage interconnects parts of the chamber on opposite sides of the piston, this passage containing a manually operable valve which is spring-biased towards a closed position. The piston has a piston rod pivotally connected to the foot- mounting component by a pivot joint defining a medial-lateral axis parallel to and spaced from the heel-height adjustment axis.
申请公布号
WO2007054736(A3)
申请公布日期
2007.07.26
申请号
WO2006GB04247
申请日期
2006.11.14
申请人
CHAS. A. BLATCHFORD & SONS LIMITED;ABIMOSLEH, FADI;HARRIS, GRAHAM;LANG, STEPHEN, TERRY;ZAHEDI, MIR, SAEED