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. 11, 1994
Filed:
Jan. 16, 1991
Jonathan L Wacks, Forest Hills, NY (US);
Senetek PLC, St. Louis, MO (US);
Abstract
An injector for delivering fluid to a preselected internal target tissue while avoiding fluid exposure to surface tissue. A needle housing assembly is concealed within a cartridge having a puncturable end cap and an ampule is also disposed within the cartridge separate from the needle housing assembly. The cartridge has a cylindrical bore which widens at one end such that the needle housing assembly which has walls while located within the narrower portion of the cylindrical bore prevents the ampule from being punctured by a hollow injection needle supported by the needle housing assembly. When the ampule is propelled toward the needle housing assembly with a plunger, the needle housing assembly enters the widened portion of the cylindrical bore, allowing its walls to be separated such that the hollow injection needle extends into the ampule allowing the fluid to be delivered from the ampule through the hollow injection needle to the internal target tissue.