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Cassette for programable multiple input infusion system

  • US 4,865,584 A
  • Filed: 04/16/1987
  • Issued: 09/12/1989
  • Est. Priority Date: 02/08/1984
  • Status: Expired due to Term
First Claim
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1. A cassette for an infusion system that administers selected infusates into the circulatory system of a patient, the infusion system including a housing in which a pump and controller are mounted, comprising:

  • a cassette housing fashioned of a disposable material;

    means formed with the cassette housing for providing a longitudinally extending fluid flow channel;

    means formed with the cassette housing for providing a plurality of spaced-apart fluid input ports in fluid communication with the fluid flow channel that are spaced-apart longitudinally along the longitudinally extending fluid flow channel;

    means including a flexible diaphragm disposed within and coooperative with the cassette housing and coupled to each of the fluid input ports for providing a plurality of selectively actuable valves in the corresponding fluid input ports for individually controlling fluid flow between the several input ports and the fluid flow channel;

    means formed with the cassette housing for providing a patient output port in fluid communication with the fluid flow channel;

    said means including a flexible diaphragm further includes means coupled to the patient output port for providing a valve in the patient output port;

    means formed with the cassette housing and cooperative with said diaphragm for providing a pumping chamber in fluid communication with said fluid input ports through the corresponding valve and in fluid communication with the patient output port through its associated valve; and

    means formed with the cassette housing for mounting the cassette housing to said housing in which the pump and controller are mounted.

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