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Liquid injection system for detecting when piston pusher of liquid injector grips piston flange of liquid syringe

  • US 20040152979A1
  • Filed: 10/30/2003
  • Published: 08/05/2004
  • Est. Priority Date: 02/04/2003
  • Status: Abandoned Application
First Claim
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1. A liquid injection system comprising:

  • a liquid syringe having a cylinder with a cylinder flange disposed on and around an end thereof and a piston slidably inserted in said cylinder and having a piston flange disposed on and around an end thereof; and

    a liquid injector for holding and moving at least said cylinder flange and said piston flange relatively to each other;

    said liquid injector comprising a cylinder gripping mechanism for gripping said cylinder such that said cylinder has a longitudinal direction oriented forwardly and rearwardly, a piston pusher supported slidably in forward and rearward directions for pushing said piston at least forwardly, a pair of engaging claws laterally openably and closably mounted on said piston pusher for individually engaging left and right edges of a front face of said piston flange, and gripping detecting means for detecting when said piston flange is gripped by said engaging claws.

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