Package for pharmaceutical formulation

Details Package for pharmaceutical formulation Package for pharmaceutical formulation

A - Human Necessities

61

M

A61M 5/178 (2006.01) A61M 5/00 (2006.01)

Patent

CA 2545809

Cartridges (10) are provided for storing and facilitating the delivery of pharmaceutical formulations. In one preferred embodiment, the cartridge comprises a body (20) including a bore (30) extending through the body (20), and a plunger (60) movably disposed in the bore (30). The bore has a transverse dimension at a distal end that is equivalent to that at a midpoint. The plunger has a planar contact surface (62) that is transversely coextensive with the bore (30) for applying a force to a pharmaceutical formulation contained in the bore. This configuration helps to eliminate dead volume, and therefor enables filing by volume rather than weight to ensure accurate dosing.

L'invention concerne des cartouches permettant de stocker et de faciliter la délivrance de formulations pharmaceutiques. Dans un mode de réalisation, la cartouche comprend un corps comportant une orifice s'étendant à travers le corps, et un piston placé mobile dans l'orifice. L'orifice a une dimension transversale à une extrémité distale qui est équivalente à celle à un point central. Le piston a une surface de contact plane dont la dimension transversale correspond à celle de l'orifice, ce qui permet d'appliquer une force à une formulation pharmaceutique contenue dans l'orifice. Cette configuration aide à éliminer le volume mort et donc permet un remplissage en volume plutôt qu'en poids pour garantir un dosage exact.

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