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:
Jun. 30, 1992
Filed:
Oct. 19, 1990
Milton J Cohen, Potomac, MD (US);
Other;
Abstract
An improved hypodermic syringe employs a syringe holder which surrounds the syringe barrel, including the needle, both before and after injection. The syringe holder encases the operable parts of the syringe prior to use. One embodiment employs a plunger having a plunger lock adapted to engage a counterlock in a rubber support, which holds the needle in place. When the plunger is fully compressed to inject the liquid, the plunger lock engages the counterlock, allowing the needle to be retracted into the syringe holder by pulling the plunger. In an alternate embodiment, a conventional one-piece plunger is used. After injection, the needle is retracted into the holder by grasping and pulling the syringe barrel.