Medical injector system

  • US 10,434,249 B2
  • Filed: 10/28/2016
  • Issued: 10/08/2019
  • Est. Priority Date: 11/25/2003
  • Status: Active Grant
First Claim
Patent Images

1. A syringe comprising:

  • a syringe body; and

    a plunger movably disposed within the syringe body and configured to engage a piston of a fluid injector for moving the plunger within the syringe body, the plunger comprising;

    an annular base member comprising a cylindrical wall extending in a longitudinal direction, wherein the cylindrical wall comprises a proximal end, a distal end, and an inner surface between the proximal end and the distal end;

    a retaining shoulder projecting inwardly from and extending around the inner surface of the cylindrical wall; and

    a plurality of flanges proximal to the retaining shoulder and projecting inwardly from the inner surface of the cylindrical wall.

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