Prosthetic hand

Abstract

A prosthetic hand comprises a hand body, a plurality of fingers and a mechanism for actuating movement of the plurality of fingers relative to the hand body. The mechanism comprises: a movable primary drive element comprising one or more primary drive pulleys; and a plurality of movable secondary drive elements each comprising a corresponding secondary drive pulley. Each of the plurality of secondary drive elements is coupled to the primary drive element by a coupling cable supported by the primary and secondary drive pulleys, such that movement of the primary drive element in a driving direction away from the secondary drive elements exerts a force on the secondary drive elements urging movement of the secondary drive elements in the driving direction. Each finger of the plurality of fingers is coupled to a corresponding secondary drive element of the plurality of secondary drive elements such that movement of a secondary drive element in the driving direction drives movement of the corresponding finger in a first direction relative to the hand body. The primary drive element and the secondary drive elements are mounted on one or more guides which constrain the direction of movement of the said primary drive element and the secondary drive elements.

Dependencies are inferred from the claim text.