×

Injector module for a syringe and pre-filled syringe provided therewith

  • US 5,779,683 A
  • Filed: 11/29/1995
  • Issued: 07/14/1998
  • Est. Priority Date: 02/14/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. An injector module having a syringe subassembly, said module comprising:

  • a cylindrical barrel having a distal and proximate extremity;

    a needle extending from said proximate extremity and attached to said barrel by a needle-holder tip;

    a sleeve being movable between a retracted position, exposing said needle, and an advanced position, covering said needle,wherein said sleeve comprises a single rigid piece telescopically interlocked with and axially slidable on said barrel;

    an annular skirt, attached to said proximate extremity, surrounding said needle-holder tip (45);

    at least two diametrically opposed flexible tabs on said skirt that cooperate with an interior annular rib (50) on said rigid piece to form an anti-return device when said sleeve is in the advanced position; and

    at least one stop means also cooperating with said annular rib (50) on said sleeve thereby to define a path of said sleeve when said sleeve is in the advanced position, said stop means comprising an annular protruding rib extending across two diametrically opposed circular portions respectively located between said flexible tabs.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×