| 摘要 |
An automatic injector device comprises a housing 24, 26 and a movable drive assembly including a needle. The movable assembly is positioned within the housing 24, 26 in an initial position. A stored energy source, such as a spring, 32, 34 is located within the housing 24, 26 and, in operation, is configured to drive the movable assembly from the initial position through the housing 24, 26 to an insertion position. A skin contact element 18 is coupled to the housing 24, 26 and configured to contact an injection site in operation. A force transfer mechanism (Fig. 4 19, 40) is configured to transfer force from the movable assembly to the skin contact element 18 when the movable assembly is at or near to the insertion position. Preferably the movable assembly comprises a drug container 10, a drive member 28, 30 positioned between the stored energy source 32, 34 and the drug container 10, a cradle 38 to hold the drug container, and a needle hub. Preferably the force transfer mechanism comprises a portion of the movable assembly and a resilient element. |
