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

  • US 5,433,704 A
  • Filed: 05/03/1994
  • Issued: 07/18/1995
  • Est. Priority Date: 06/25/1991
  • Status: Expired due to Fees
First Claim
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1. A method for infusing intravascular treatment fluid to a patient comprising:

  • positioning an inflatable bladder in juxtaposition with a collapsible treatment fluid bag within a confined containment volume formed by first and second opposing containment members, wherein said inflatable bladder is in fluid communication with a pressure sensor;

    controllably inflating said bladder, thereby impinging said bladder against said treatment fluid bag, wherein said bladder is controllably inflated by an electronic control assembly comprising a drive fluid pump in fluid communication with said bladder, wherein said drive fluid pump is in operative communication with an electronic control circuit, which is, in turn, in operative communication with the pressure sensor;

    collapsing said treatment fluid bag to expel treatment fluid therefrom into an outlet tube in fluid communication with said treatment fluid bag, wherein treatment fluid is controllably expelled from said treatment fluid bag at a predetermined rate; and

    displacing said treatment fluid through said outlet tube to the patient.

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