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Rapid venous infusion system

  • US 4,747,826 A
  • Filed: 01/06/1986
  • Issued: 05/31/1988
  • Est. Priority Date: 06/08/1983
  • Status: Expired due to Term
First Claim
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1. A system for venous infusion of a physiologic fluid, such as blood, into a patient at a flow rate of at least one liter per minute comprising in combination:

  • a. a reservoir for the physiologic fluid having an input port for receiving the physiologic fluid and an outlet port for dispensing the physiologic fluid;

    b. a container containing physiologic fluid not obtained directly from the patient to be furnished to the reservoir;

    c. a rollerhead occlusive pump or a centrifugal pump for propelling the physiologic fluid through the system at a flow rate of at least about one liter per minute;

    d. a heat exchanger with an interrelated heating/cooling unit;

    e. a micropore filter having a pore size of 40 microns or less;

    f. a pressure sensor;

    g. an air bubble sensor with an associated cut-off mechanism;

    h. one or more intravenous cannula of a relatively large diameter;

    i. flexible conduit means connecting the container to the reservoir, the reservoir to the infusion pump, the infusion pump to the heat exchanger, the heat exchanger to the micropore filter, the micropore filter to the reservoir and the micropore filter to the air bubble sensor and associated cut-off mechanism, and terminating at the intravenous cannula;

    j. means in said system for sensing the temperature, flow rate and total volume of the physiologic fluid to be infused; and

    k. means in said system for controlling the temperature, flow rate, pressure and total volume of the physiologic fluid to be infused.

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