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System for detecting air

  • US 6,746,427 B2
  • Filed: 06/17/2002
  • Issued: 06/08/2004
  • Est. Priority Date: 04/20/1995
  • Status: Expired due to Fees
First Claim
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1. A syringe for use in a medical fluid delivery device of a type having a syringe holder;

  • the syringe comprising;

    (a) a syringe body having a distal end and a proximal end;

    the syringe body defining a pumping chamber and an inlet port;

    (b) a syringe end wall located at the distal end of said syringe body having a flat face for mating engagement with the syringe holder;

    said end wall defining an outlet port, an interior portion and an exterior portion;

    said exterior portion defining said flat face;

    (c) said exterior portion being reinforced with a plurality of ribs;

    the ribs each having end portions terminating in a plane transverse to a longitudinal axis of the syringe body;

    said end portions of said ribs defining said flat face; and

    (d) a syringe plunger located in said pumping chamber adapted for reciprocal motion between a position proximate to said proximal end and said distal end.

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