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Preloadable syringe for automated dispensing device

  • US 5,928,202 A
  • Filed: 10/23/1998
  • Issued: 07/27/1999
  • Est. Priority Date: 10/23/1997
  • Status: Expired due to Fees
First Claim
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1. A syringe comprising a hollow cylindrical body with a channel defined by a wall with a substantially uniform inner diameter, a fluid port at one end of said body and a second body end, said second body end comprising an opening with a diameter greater than said diameter of said channel, a piston adapted to received in and moved along said channel, a push rod adapted to extend through said second body end opening and into said channel to move said piston along said channel, means for conditionally engaging said rod and said piston, said engaging means normally cooperating with said channel wall to maintain said engagement, but when aligned with said second body end opening such that it can no longer cooperate with said channel wall, disengaging said rod from said piston to permit removal of said rod from said syringe.

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