Advancing device for an injection device

Details Advancing device for an injection device Advancing device for an injection device

A - Human Necessities

61

M

A61M 5/24 (2006.01) A61M 5/175 (2006.01) A61M 5/315 (2006.01)

Patent

CA 2124385

A feed mechanism for an injection device having an ampoule casing (13) includes an outer casing (2), an inner casing (3) protruding rearwardly from the outer casing and a toothed rack (4) longitudinally displaceable with the inner casing against the force of a spring (8). The rack has teeth (5) of which the length L corresponds to one full injection dose. The inner casing is longitudinally movable by a length L between two stops (6, 7) in the inner and outer casings. The inner casing has a latch (9, 10) which detachably locks the inner casing at its extreme forward position into an aperture (11) of the ampoule casing. A pawl prevents return movement of the rack.

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