Disposable unit-dose jet-injection syringe for pre-filled and/or transfilled liquid injectable medical drug or vaccine products and method thereof - Patent Pending

United States Patent Application 20020065483
Kind Code A1
Leon, Nathaniel ; et al. May 30, 2002
Disposable unit-dose jet-injection syringe for pre-filled and/or transfilled liquid injectable medical drug or vaccine products and method thereof
Abstract
A disposable unit-dose jet injection syringe having a cylindrically shaped syringe body. The syringe body has a rear open end and a forward closed end. The rear open end has an enlarged diameter forming a flange that retains the syringe to the driving system during the injection cycle. The closed end has an small area coined by a stamping process. A jet orifice is punched through the small area of the closed end. A cavity formed in syringe body is configured to hold a unit dose of liquid, drug, or biological. A piston is slidably engaged within the body to inject the unit dose. A driving system activates the piston to inject the unit dose out of the jet orifice. A method of manufacturing a jet injection syringe is also provided. A method of injecting a medicine is also provided.
Inventors: Leon, Nathaniel; (Overland Park, KS) ; Gerwig, Phillip L.; (Perrysville, OH)
Correspondence Name and Address: JOSEPH A. MAHONEY
MAYER, BROWN & PLATT
P.O. BOX 2828
CHICAGO
IL
60690-2828
US
Serial No.: 783444
Series Code: 09
Filed: February 14, 2001
U.S. Current Class: 604/68; 264/264
U.S. Class at Publication: 604/68; 264/264
Intern'l Class: A61M 005/30