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Syringe pump drive system and disposable syringe cartridge

  • US 3,993,061 A
  • Filed: 02/28/1975
  • Issued: 11/23/1976
  • Est. Priority Date: 02/28/1975
  • Status: Expired due to Term
First Claim
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1. For use in a syringe pump having a housing and a syringe mounting, a syringe, comprising:

  • a hollow cylinder having an open end and a closed end, said cylinder being adapted for normal use with its longitudinal axis substantially vertical, said cylinder having a pair of integral, parallel inlet and outlet nipples projecting from said closed end of said cylinder, said nipples being disposed on opposite sides of said cylinder with the axes of said nipples being substantially parallel to said longitudinal axis of said cylinder, there being no valves within said nipples, the uppermost interior surface of said cylinder being sloped upwardly in a single plane, said outlet nipple being located adjacent the highest point within said cylinder;

    a piston head with said cylinder; and

    a piston rod connected to said piston head and integral therewith for reciprocating said piston head along said longitudinal axis of said cylinder.

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