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Medical drainage pump with irrigation

  • US 4,755,168 A
  • Filed: 01/27/1987
  • Issued: 07/05/1988
  • Est. Priority Date: 01/27/1987
  • Status: Expired due to Term
First Claim
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1. A medical drainage and irrigation system comprising:

  • a peristaltic pump having a flexible tube passing therethrough;

    a variable-speed and reversible-direction motor driving said peristaltic pump;

    a check valve assembly on said flexible tube;

    a patient tube at an end of said flexible tube;

    said check valve assembly including means for permitting irrigating fluid to flow from an irrigation fluid reservoir through said peristaltic pump when said motor drives said peristaltic pump in a first direction and for permitting body fluid to flow from said peristaltic pump therethrough toward a drainage receptacle when said motor drives said peristaltic pump in a reverse direction;

    said check valve assembly including means for preventing said irrigation fluid from flowing therethrough toward said drainage fluid receptacle and for preventing said body fluids form flowing therethrough toward said irrigating fluid reservoir; and

    means for controlling a speed, a duration and direction of said motor whereby a duty ratio and a pumping rate of said peristaltic pump is controlled.

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