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Pneumatic torniquet

  • US 4,469,099 A
  • Filed: 12/20/1982
  • Issued: 09/04/1984
  • Est. Priority Date: 10/02/1980
  • Status: Expired due to Term
First Claim
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1. A pneumatic tourniquet, comprising:

  • an inflatable cuff;

    pressurizing means for pressurizing said cuff;

    pressure relief means for depressurizing said cuff;

    pressure sensing means for producing a cuff pressure output signal representative of the pressure to which said cuff is pressurized;

    selectable reference signal means for producing any one of a number of constant signals, each representative of a predetermined constant reference pressure;

    pressure regulator means responsive to said cuff pressure output signal for selectably activating said pressurizing means and said pressure relief means to maintain said cuff pressure near a selected pressure over a time period suitably long for the performance of a surgical procedure; and

    alarm means for producing a cuff over-pressurization alarm when the difference between the pressures corresponding to said cuff pressure output signal and a selected one of said constant signals exceeds a cuff over-pressurization limit.

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