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Hand control system

  • US 4,558,704 A
  • Filed: 12/15/1983
  • Issued: 12/17/1985
  • Est. Priority Date: 12/15/1983
  • Status: Expired due to Term
First Claim
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1. Hand control apparatus for a quadriplegic person comprising:

  • a control sensor for sensing movement of a non-paralyzed part of the body of said person and generating a corresponding hand control signal,indicating means for indicating a reference value of said hand control signal,microprocessor means connected to said control sensor and programmed for generating hand closing commands and hand opening commends in accordance with the value of said hand control signal relative to said reference value,first stimulation means responsive to said hand closing commands for stimulating contraction of muscles connected for closing a hand of said person,second stimulation means responsive to said hand opening signals for stimulating contraction of muscles connected for opening said hand, andfeedback means for sensing movement of said hand and transmitted a feedback signal to said microprocessor in correspondence thereto;

    said microprocessor being further programmed for generating said hand closing commands in correspondence with the difference between said hand control signal and said feedback signal.

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