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Miniature infusion pump

  • US 4,504,200 A
  • Filed: 12/17/1979
  • Issued: 03/12/1985
  • Est. Priority Date: 12/17/1979
  • Status: Expired due to Term
First Claim
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1. In a pressure pump for pumping fluids through flexible tubing which comprises a pressure member of generally circular periphery, adapted for orbital motion about an axis of rotation, and a sleeve member positioned about the pressure member and defining channel means for receiving and retaining said flexible tubing in a predetermined position between the pressure member and sleeve member, with the tubing surrounding said pressure member, the improvement comprising, in combination:

  • said sleeve member being divided into a pair of substantially semi-circular jaws attached together at one end in hinged relation, to permit opening and closing of said jaws about said pressure member to facilitate installation of said tubing, said jaws defining opposed axial faces, one of said faces defining a tubing inlet slot extending transversely thereacross and the other of said opposed axial faces defining a tubing outlet slot extending transversely thereacross, said slots being circumferentially spaced from each other about said jaws by at least 30°

    , said pressure member and sleeve member being carried by a housing, said housing being carried by an openable casing adapted to receive a flexible liquid container having flexible tubing for connection through said pressure pump, the pressure member and jaws projecting from said casing toward the exterior, a longitudinal groove defined in said housing to receive said flexible tubing, said tubing inlet slot being positioned on the side of said jaws that faces said casing, an end of said tubing inlet slot being positioned adjacent to the outer end of said longitudinal groove, to permit tubing in said longitudinal groove to pass into said inlet slot.

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