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Circuit For Control Of Electromechanical Prosthetic HandProposed circuit for control of electromechanical prosthetic hand derives electrical control signals from shoulder movements. Updated, electronic version of prosthesis, that includes two hooklike fingers actuated via cables from shoulder harness. Circuit built around favored shoulder harness, provides more dexterous movement, without incurring complexity of computer-controlled "bionic" or hydraulically actuated devices. Additional harness and potentiometer connected to similar control circuit mounted on other shoulder. Used to control stepping motor rotating hand about prosthetic wrist to one of number of angles consistent with number of digital outputs. Finger-control signals developed by circuit connected to first shoulder harness transmitted to prosthetic hand via sliprings at prosthetic wrist joint.
Document ID
19950065364
Document Type
Other - NASA Tech Brief
Authors
Bozeman, Richard J., Jr. (NASA Lyndon B. Johnson Space Center, Houston, TX.)
Date Acquired
August 17, 2013
Publication Date
May 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 5
ISSN: 0145-319X
Subject Category
ELECTRONIC COMPONENTS AND CIRCUITS
Report/Patent Number
MSC-21941
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.