A prosthetic hand comprising a hand body 2, 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 6 comprising one or more primary drive pulleys 22 and a plurality of movable secondary drive elements 7A-7C each comprising a corresponding secondary drive pulley 15A-15C. Each of the plurality of secondary drive elements &a-C is coupled to the primary drive element 6 by a coupling cable 41 supported by the primary 22 and a secondary drive pulleys 15A-15C such that movement of the primary drive element 6 in a driving direction away from a secondary drive elements 7A-7C exerts a force on the secondary drive elements 7A-7C urging movement of the secondary drive elements in a driving direction D. Each of the secondary drive elements 7A-7C is coupled to a corresponding finger such that movement of the secondary drive element moves the corresponding finger, and a primary drive element and the secondary drive elements are mounted on one or more guides which constrain the direction of moment.
Prosthetic hand
2023-12-27
Patent
Electronic Resource
English