Rack and pinion drive for by-pass cartridge

Details Rack and pinion drive for by-pass cartridge Rack and pinion drive for by-pass cartridge

B - Operations, Transporting

01

F

B01F 15/02 (2006.01) A61J 1/20 (2006.01) B01F 3/12 (2006.01)

Patent

CA 2725620

A device for mixing a substance comprised of two constituents contained in a cartridge (12) and having a cartridge holder (32) thereabout, the device comprising a plunger rod (46) for pushing a closure member (20) to permit the transfer of a diluent in a second chamber (28) through a by-pass channel (24) to mix with a constituent in a first chamber (26), the plunger rod (48) being driven by means of a rack (48) and a pinion gear (50) arrangement to prevent overly rapid movement of the plunger rod (46).

La présente invention concerne un dispositif de mélange d'une substance constituée de deux composants contenus dans une cartouche (12), insérée dans un support de cartouche (32). Ledit dispositif comprend une tige de piston (46) destinée à pousser un élément de fermeture (20) afin de permettre le transfert d'un diluant en direction d'une seconde chambre (28) par l'intermédiaire d'un canal de dérivation (24) en vue de son mélange avec un composant présent dans une première chambre (26), ladite tige de piston (48) étant entraînée par un dispositif d'engrenage à crémaillère (50) destiné à empêcher un mouvement trop rapide de la tige du piston (46).

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