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:
Aug. 26, 2003
Filed:
Feb. 04, 2002
Patrick Alexandre, Gray, FR;
Bernard Brouquieres, Toulon, FR;
Claude Mikler, Dijon, FR;
Louis Simonet, La Garde, FR;
Crossject, Paris, FR;
Abstract
The invention concerns the technical field of needleless syringes for injecting an active principle through the skin. More particularly, the invention concerns a needleless syringe provided with a piezoelectric crystal and a triggering device comprising a triggering member and impacting means and, on a triggering device particularly adapted to needleless syringes. The invention is mainly characterized in that the impacting means comprises a latch maintained under elastic stress by being blocked against a stop element and the triggering member is capable of moving the latch to release it, so that it is urged to strike the piezoelectric crystal. Then, the crystal produces an electric arc designed to initiate a pyrotechnic charge whereof the combustion gases will help to expel the active principle contained in the syringe.