Patent ID: 6976976

Claim:
An injection device, comprising: a syringe comprising a proximal end, a distal end, and a plunger extending from the proximal end; a guard slidably attached to the syringe and having a proximal end and a distal end, the guard being biased from a first position wherein the distal end of the syringe is exposed towards a second position wherein the guard covers the distal end of the syringe; first cooperating detents on the syringe and guard for retaining the guard in the first position; a latch member extending proximally from the guard, the latch member being engageable by the plunger as the plunger is advanced into the syringe for releasing the first cooperating detents whereupon the guard may slide towards the second position; and second cooperating detents on the syringe and guard for retaining the guard in the second position.