Current body-powered (BP) prosthetic hands
have stiff fingers and require a large amount
of input energy by the prosthesis user to produce a
limited pinch force at the fingertip. Two new finger
prototypes were designed, constructed, and evaluated.
One finger was driven by a pulley and a cable;
the other was driven by a hydraulic cylinder. The
fingers enable the construction of an articulating
BP prosthetic hand that is lighter, can pinch harder,
and has a higher energy efficiency than current BP prosthetic hands. Of both tested fingers, the hydraulic
cylinder finger is the most suitable because it
requires less input energy.
Volume 50 Number 9, 2013
Pages 1253 — 1266
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Last Reviewed or Updated Thursday, January 9, 2014 11:51 AM