Devices for the administration of drugs and vaccines in the...

A - Human Necessities – 61 – M

Patent

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A61M 5/20 (2006.01)

Patent

CA 2715853

The invention refers to hand operated disposable devices for the administration of drugs, vaccines and other medicaments in the form of solid injectable needles. The devices incorporate mechanisms for the automatic retraction of the injection rod even when the user continues to exert pressure on the device. The devices can incorporate an injectable needle in a sheath or cartridge that facilitates its manufacture and manipu-lation. These injection devices can only be used once and their use results in a change of configuration that renders them non operational and pre-vents contact with parts that have been exposed to the patient's tissues.

L'invention concerne des dispositifs manuels jetables destinés à l'administration de médicaments, de vaccins et d'autres substances médicamenteuses, lesquels dispositifs se présentent sous la forme d'aiguilles solides injectables. Les dispositifs selon l'invention comprennent des mécanismes qui déclenchent la rétraction automatique de la tige d'injection, même lorsque l'utilisateur continue à exercer une pression sur le dispositif. Les dispositifs précités peuvent comprendre une aiguille injectable, disposée dans une gaine ou une cartouche qui facilite sa fabrication et sa manipulation. Les dispositifs d'injection selon l'invention ne peuvent être utilisés qu'une fois et leur utilisation entraîne un changement de configuration qui les rend inutilisables et empêche tout contact avec des parties qui ont été exposées aux tissus du patient.

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