Patent ID: 8808244

Claim:
An automatic injector comprising a housing, an activation mechanism, an actuation mechanism, and a syringe cartridge having a plunger and a needle assembly, wherein the actuation mechanism comprises a first actuation spring, a first actuation pill, a second actuation spring, and a second actuation pill, wherein the first actuation spring has a length, and wherein in an initial configuration, substantially a majority of the length of the first actuation spring resides in a compressed, energized state within an upper portion of first actuation pill and the second actuation spring resides in a compressed, energized state between the first actuation pill and the second actuation pill, wherein the first actuation pill has one or more locking hooks at a proximal end of the first actuation pill, the one or more locking hooks initially directly engaging a locking plateau at an interior proximal end of the housing.