A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 5/303 (2006.01)
Patent
CA 2411814
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 (5) consisting of a tube (6) closed by an upstream plug-piston (7) and a downstream plug-piston (8) between which is contained the liquid active principle. Said needleless syringes are characterised in that they are capable of injecting a variable amount of liquid active principle (9) by adapting, through displacement of the downstream plug-piston (8) in the tube (6) the volume included between the two plug-pistons (7, 8) to the amount of active principle (9) to be injected.
Le domaine technique de l'invention est celui des seringues sans aiguille pré- remplies et jetables, fonctionnant avec un générateur de gaz, et utilisées pour les injections intradermiques, sous-cutanées et intramusculaires, de principe actif liquide à usage thérapeutique en médecine humaine ou vétérinaire. Les seringues sans aiguille selon l'invention utilisent un réservoir (5) constitué par un tube (6) obturé par un bouchon-piston amont (7) et un bouchon-piston aval (8) entre lesquels est contenu le principe actif liquide (9). La principale caractéristique des seringues sans aiguille selon l'invention est qu'elles sont aptes à injecter une quantité variable de principe actif liquide (9) en adaptant, par déplacement du bouchon-piston aval (8) dans le tube (6), le volume compris entre les deux bouchons-pistons (7, 8) à la quantité de principe actif (9) à injecter.
Alexandre Patrick
Brouquieres Bernard
Roller Denis
Crossject
Goudreau Gage Dubuc
LandOfFree
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