Resettable drug delivery device

Details Resettable drug delivery device Resettable drug delivery device

A - Human Necessities

61

M

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

Patent

CA 2762041

A resettable dosing mechanism comprises a dose button (66, 102) and a dial grip (52, 104) operatively coupled to the dose button (66, 102). A spindle (64) acts on a bung of a cartridge (25) and a driver (55) is operatively coupled between the dose button (66, 102) and the spindle (64). During an injection of the dose, the dose button (66, 102) moves in an axial direction to cause the spindle (64) to administer the dose. During resetting of the dose setting mechanism, the spindle (64) is retracted back into the dose setting mechanism. An advantageous resetting mechanism is described.

L'invention concerne un mécanisme de dosage réinitialisable qui comprend un bouton de dosage (66, 102) et une molette (52, 104) couplée fonctionnellement avec le bouton de dosage (66, 102). Une tige (64) agit sur le bouchon d'une cartouche (25) et un actionneur (55) est couplé fonctionnellement entre le bouton de dosage (66, 102) et la tige (64). Pendant une injection de la dose, le bouton de dosage (66, 102) se déplace en direction axiale pour provoquer l'administration de la dose par la tige (64). Pendant la réinitialisation du mécanisme de réglage de la dose, la tige (64) est rétractée dans le mécanisme de réglage de la dose. Un mécanisme de réinitialisation avantageux est décrit.

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