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Nozzle assembly for injection device

  • US 5,722,953 A
  • Filed: 02/29/1996
  • Issued: 03/03/1998
  • Est. Priority Date: 02/29/1996
  • Status: Expired due to Fees
First Claim
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1. A nozzle assembly adapted for use with an injector device comprising:

  • a chamber for holding a fluid and having first and second ends with an orifice at the first end for passage of the fluid and being open at the second end;

    a plunger movably received in said chamber for expelling fluid out of or drawing fluid into the chamber by moving the plunger relative to the chamber, the plunger comprising first and second driving members operatively connected to each other for expelling out and drawing in fluid, with the first driving member being spaced apart from the second driving member by a preselected gap; and

    a resilient biasing member disposed between the first and second driving members for resiliently maintaining said gap.

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