A CREDIT CARD SIZED INJECTION DEVICE

摘要

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.