Patent ID: 6585685
Filing Date: 2003-07-01
Classification: A61M

Abstract:
A gas powered hypodermic jet injection device, said device comprising:a device body having provision for engaging with and carrying a jet injection cartridge; a gas piston reciprocable in said device body and cooperable with the jet injection cartridge to effect a jet injection in response to communication of pressurized gas to said gas piston; a valve device for effecting communication of pressurized gas to said gas piston in response to movement of said valve device from a first to a second position; a safety ring rotationally carried on said device body and in a respective first position preventing movement of said valve device from said first to said second position, said safety ring being rotationally movable to a respective second position in which said valve device is movable from said first to said second position; and at least two tactile detents disposed on said device body such that each of said tactile detents provides a detented limit position corresponding to either said first position or said second position of said safety ring.