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Infusion pump, treatment fluid bag therefor, and method for the use thereof

  • US 5,207,645 A
  • Filed: 06/25/1991
  • Issued: 05/04/1993
  • Est. Priority Date: 06/25/1991
  • Status: Expired due to Term
First Claim
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1. A pump for infusing intravenous treatment fluid to a patient, said infusion pump comprising:

  • a collapsible treatment fluid bag;

    an inflatable bladder juxtaposed with said treatment fluid bag;

    means to vent said bladder;

    means for impinging said bladder against said treatment fluid bag as said bladder is inflated;

    means for electronically controlling the pressure of said bladder so as to collapse said treatment fluid bag and controllably expel treatment fluid therefrom; and

    an outlet tube in fluid communication with said treatment fluid bag and said patient.

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