The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 05, 1993
Filed:
Dec. 18, 1992
Ralf V Bitdinger, La Cote Herbeys, FR;
Becton, Dickinson and Company, Franklin Lakes, NJ (US);
Abstract
A hypodermic syringe has a syringe barrel with a distal end and a passage therethrough communicating with a fluid-receiving chamber in the syringe barrel. A barrier extends across the passage to isolate the fluid in the chamber. A needle cannula is mounted to a needle hub slidingly engaged at the distal end of the syringe barrel. The needle cannula includes a proximally facing point for piercing the barrier in the passage to the chamber of the syringe barrel. A needle shield is mounted to the distal end of the syringe barrel, and cam means are provided for cam-guided rotational movement between the needle shield and the syringe barrel. The cam shape causes the needle shield and the needle cannula to move proximally for initially piercing the barrier and then to move distally to enable separation of the needle shield.