Patent ID: 7559917

Claim:
A cutaneous injection device, comprising: a body having an inner wall, the body being intended to inject a liquid active principle contained in a tubular reservoir, the tubular reservoir formed by a tube, which is closed at its upstream end by a delivery plunger and which has, at its downstream end, an injection unit, the tubular reservoir being lodged in the body of the injection device, the tubular reservoir being disposed in a space defined by the inner wall; a high-pressure gas generator upstream of the delivery plunger, which makes it possible to exert a pressure on the delivery plunger; and, a space for pressurization by the gases of the generator is delimited by and directly adjacent to both the outer wall of the tubular reservoir and the inner wall of the body, wherein the delivery plunger extends above the tube and the plunger includes a starting point for rupture by shearing which corresponds to the internal dimensions of the tube.