×

Rigid needle shield

  • US 5,147,325 A
  • Filed: 05/03/1991
  • Issued: 09/15/1992
  • Est. Priority Date: 05/03/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A shield for a hypodermic syringe assembly which includes a sheath/needle sub-assembly having a resilient sheath covering a distal portion of a needle cannula, said shield comprising:

  • a relatively rigid housing forming an elongate chamber therein said chamber forming an open proximal end, and said chamber and said open proximal end having cross-sectional areas sized to allow the sheath/needle sub-assembly to be inserted through said open proximal end and into said chamber, said relatively rigid housing further forming a pair of slots extending longitudinally along said shield from said open proximal end thereof, said slots extending through said housing into said chamber, and said slots being located at opposite positions in said chamber; and

    retention means formed as a part of said housing for holding the sheath in said chamber and for preventing separation of the sheath from said shield when the needle cannula is removed from the sheath;

    whereby said shield is easily positionable over the sheath/handle sub-assembly, and the sheath, when engaged within said shield, is easy removed from the needle cannula by exerting a gripping force on said housing near said open proximal end thereof to resiliently deform said housing to form an effective cross-sectional area of said chamber which is less than the cross-sectional area of the sheath, and withdrawing said shield from the needle cannula.

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