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Power infuser

  • US 4,874,359 A
  • Filed: 12/14/1987
  • Issued: 10/17/1989
  • Est. Priority Date: 12/14/1987
  • Status: Expired due to Term
First Claim
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1. A power infuser comprising at least one cardiotomy reservoir and means to charge the reservoir with fluid, fluid conduit means providing a recirculatory loop communicating from and returning to the reservoir, an air embolus sensor in a near downstream location relative to the reservoir in the loop, a non-fluid contact pump in the loop downstream of the air embolus sensor, means to control the temperature of the fluid in the loop, a bubble trap-filter in a far downstream location relative to the reservoir in the loop said bubble trap-filter having an inlet and outlet, said fluid conduit means including tubing means in fluid communication with the filter outlet at one end and with the reservoir at a second end to complete the recirculatory loop, and separate means in fluid communication with the tubing means between the bubble-trap filter outlet and reservoir to selectably discharge fluid from the loop to a patient, said discharge means being downstream of the bubble trap-filter.

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