A credit card sized injection device

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/20 (2006.01) A61M 5/315 (2006.01) A61M 5/34 (2006.01)

Patent

CA 2571769

A mechanical operated injection device which has the size of a credit card. The very compact size is obtained by using a flexible reservoir (90) containing the drug to be delivered and a suction pump (60, 70, 80) for pumping the liquid drug from the flexible reservoir to the body of the user. The pump is driven in cycles by a spring assembly which is energized by the user when setting the dose to be injected. The injection device is further connected to a needle assembly by a snap mechanism only requiring a 90 degree rotation of the injection needle assembly in order to release the injection needle assembly from the injection device.

La présente invention a trait à un dispositif d'injection a commande mécanique ayant la taille d'une carte de crédit. La taille très compacte est obtenue grâce à l'utilisation d'un réservoir souple (90), contenant le médicament à injecter et une pompe d'aspiration (60, 70, 80) pour le pompage du médicament liquide depuis le réservoir souple vers l'organisme de l'utilisateur. La pompe est entraînée en cycles par un ensemble de ressort qui est activé par l'utilisateur lors du réglage de la dose à injecter. Le dispositif d'injection est en outre relié à un ensemble d'aiguille par un mécanisme d'encliquetage ne nécessitant qu'une rotation de 90 degrés de l'ensemble d'injection pour la libération de l'ensemble d'aiguille d'injection depuis le dispositif d'injection.

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