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Finger grip collar for a syringe or cartridge barrel

  • US 5,997,514 A
  • Filed: 01/15/1999
  • Issued: 12/07/1999
  • Est. Priority Date: 01/15/1999
  • Status: Expired due to Term
First Claim
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1. A finger grip collar in combination with a syringe or cartridge to facilitate the use of said syringe or cartridge during the injection or withdrawal of a medical fluid into or from a site, said combination comprising:

  • a) a cylindrical barrel having;

    an inside diameter;

    an outside diameter;

    an open proximal end for receiving a plunger, said open proximal end terminating in a rim or flange having a distal surface and a proximal surface; and

    a distal end for mounting a medical fluid access means thereon;

    b) a plunger, having an outside diameter equal to or slightly greater than the inside diameter of said cylindrical barrel, slideably positioned in said cylindrical barrel;

    c) a plunger rod having a proximal end and a distal end;

    said plunger rod being removably attached or being integral at its distal end with said plunger;

    d) a thumb rest at the proximal end of said plunger rod for facilitating exertion of manual pressure on said plunger rod;

    e) a finger grip collar being positioned on the open proximal end of said cylindrical barrel adjacent to said distal surface of said rim or flange, said finger grip collar consisting of;

    a flat resilient plastic body having a thickness of from about 2 to about 10 mm, said resilient plastic body having an elliptical outside wall, and a circular inside wall defining a cylindrical space within, wherein said cylindrical space has a diameter equal to or slightly greater than the outside diameter of said cylindrical barrel, said elliptical outside wall and said circular inside wall meeting at two points, said points being spaced from each other defining an opening into said cylindrical space, wherein said opening is slightly less or equal to the cylindrical space defined by said inside wall, wherein said resilient plastic body is of a material selected from the group consisting of polypropylene, polystyrene, polycarbonates, nylon, acetates, polyethylene and polyesters.

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