| 摘要 |
An injection device (110) is described having a housing (112) that receives a syringe (114) having a needle (118), wherein the syringe is supported in a syringe carrier (150). The syringe (114) and syringe carrier (150) are biased by a return spring (126) from an extended position in which the needle (118) extends from the housing (112) through an exit aperture (128) to a retracted position in which it does not. A drive spring (130) acts via a drive to advance the syringe (114) from its retracted position to its extended position and discharge-its contents through the needle (118) and a return spring (126), brought into play when the drive has reached a nominal return position, restores the syringe (114) to its retracted position. The syringe carrier (150) is designed to restrict rearward movement of the syringe so that the injection device is less prone to failure and damage to is components than prior art devices. |
