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:
Dec. 06, 2011
Filed:
Feb. 29, 2008
Patrick Alexandre, Gray, FR;
Bernard Brouquieres, Toulon, FR;
Denis Roller, La Ferte Alais, FR;
Crossject, Paris, FR;
Abstract
The technical field of the invention is that of needleless pre-filled disposable syringes, operating with a gas generator, and used for intradermal, subcutaneous and intramuscular injections, of a liquid active principle for therapeutic use in human and veterinary medicine. The inventive needleless syringes use a reservoir () consisting of a tube () closed by an upstream plug-piston () and a downstream plug-piston () between which is contained the liquid active principle. Said needleless syringes are characterized in that they are capable of injecting a variable amount of liquid active principle () by adapting, through displacement of the downstream plug-piston () in the tube () the volume included between the two plug-pistons () to the amount of active principle () to be injected.