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Medical inflatable cuff appliance

  • US 5,584,798 A
  • Filed: 03/31/1995
  • Issued: 12/17/1996
  • Est. Priority Date: 11/23/1992
  • Status: Expired due to Term
First Claim
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1. Medical apparatus for therapeutically and/or prophylactically treating a blood-circulation abnormality in a patient'"'"'s leg, comprising a single inflatable cuff adapted for application to the calf, first means for transiently inflating said cuff to a first pressure level sufficient to induce local tourniquet-pressure action on the calf, an inflatable foot-pump adapted for application of inflation pressure primarily at the plantar region between the ball and heel of the foot, second means for transiently inflating said foot-pump to a peak pressure in excess of said first pressure level, and cyclically operable control means for coordinated inflation/deflation cyclical operation of said first and second means, said control means including separate means of pressure-fluid supply only to said single inflatable cuff and to said inflatable foot-pump, and said control means being for sequential operation of only said single inflatable cuff and said inflatable foot-pump in each cyclical operation such that:

  • (a) initially, via said first means, said cuff is supplied with pressure fluid to transiently retain tourniquet-pressure action on the calf;

    (b) via said second means, said foot-pump is transiently inflated to said peak pressure in the circumstance of said tourniquet-pressure action on the calf, and said foot-pump is relieved of inflation pressure after achievement of said peak pressure; and

    (c) via said first means, cuff pressure is relieved from tourniquet action in selectively timed relation to inflation and at least commencement of relief of foot-pump pressure;

    said control means providing a cycle-completing interval of time between said control operations via said first and second means prior to control-means re-initiation of the next-succeeding cyclical operation, wherein successive cycles recur at a periodic interval which is in the range of 5 to 60 seconds.

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