Dial-down mechanism for wind-up pen

Details Dial-down mechanism for wind-up pen Dial-down mechanism for wind-up pen

A - Human Necessities

61

M

A61M 5/315 (2006.01) B25B 13/46 (2006.01)

Patent

CA 2738877

The present invention relates to a dial-down mechanism for an injection device comprising a torsion spring for assisting injection of a dose of medicament from the injection device, the dial-down mechanism comprising a ratchet arm (21) engaging a ring element (10) and a reset element (30) which acts on a knob located on the periphery of the ratchet arm (21) to move the ratchet arm (21) out of engagement with the ring element (10) in order to allow the set dose to be reduced.

La présente invention est relative à un mécanisme de recul pour un dispositif d'injection comprenant un ressort de torsion pour faciliter l'injection d'une dose de médicament à partir du dispositif d'injection, le mécanisme de recul comprenant un bras à cliquet (21) qui engage un élément d'anneau (10) et un élément de réinitialisation (30) qui agit sur un bouton situé à la périphérie du bras à cliquet (21) pour déplacer le bras à cliquet (21) hors de son engagement avec l'élément d'anneau (10) dans le but de permettre la réduction de la dose réglée.

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