| abstract |
The invention provides an automatic injection device for providing a subcutaneous injection of a substance to a user, comprising: a housing having a first end and a second end; a syringe movably disposed in the housing, the syringe including a barrel portion to hold the substance, a hollow needle in fluid communication with the barrel portion to expel the substance from the syringe, and a cap to seal the barrel portion and selectively apply pressure to the substance to force the substance through a hollow needle; a plunger to first move the syringe toward the first end such that the needle projects from the first end and subsequently apply pressure to the cap, the plunger including a rod connected at a first end to the cap, a compressible expanded central portion and a flange between a second end of the bar and the compressible expanded central portion; and a bypass mechanism to bypass or divert the plug towards the first open end of the housing, the bypass mechanism disposed around the second end of the bar between the flange and the second end of the housing. The present invention also provides a method and equipment for using an automatic injection device, and methods and equipment for promoting an automatic injection device, comprising a medication based on advantageous properties of the device as compared to a pre-filled syringe. The invention also provides methods and equipment for training a receiver on the use of the automatic injection device. |