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Pumping apparatus for perfusion and other fluid catheterization procedures

  • US 5,529,463 A
  • Filed: 04/19/1994
  • Issued: 06/25/1996
  • Est. Priority Date: 04/19/1994
  • Status: Expired due to Term
First Claim
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1. A pumping apparatus for delivering a continuous flow of body fluid to a preselected location within a patient'"'"'s body, comprising:

  • first and second pumps, each of the two pumps having a barrel portion defining a pump chamber and a plunger member slidably received within said barrel portion, each of said pump barrel portions having an outlet end for the passage of fluids from the pump chamber out of said pump,a support assembly supporting said first and second pumps together, said first and second pumps being supported such that each of said pump outlet ends is oriented in the same direction, the pumping apparatus further including an actuating member slidably disposed with respect to said support assembly and adapted for reciprocating movement along an axis parallel to respective longitudinal axes of said first and second pumps, said actuating member engaging said second pump plunger member and said first pump barrel portion, whereby movement of said actuating member in a first operating direction causes said actuating member to simultaneously engage said first pump in a suction stroke and said second pump in a pumping stroke and, and whereby movement of said actuating member in a second operating direction, opposite to said first direction, causes said actuating member to simultaneously engage said first pump in a pumping stroke and said second pump in a suction stroke.

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