Injection cartridge

Details Injection cartridge Injection cartridge

A - Human Necessities

61

M

A61M 5/19 (2006.01) A61M 5/24 (2006.01)

Patent

CA 2150253

An injection cartridge (1) of the dual-chamber type has a bypass connection (12) between its two chambers (9, 10) which is arranged such that the interior wall of the cartridge is modified in a predetermined area in such a way that the movable wall (11) between the two chambers does not seal completely against the interior wall in said area. According to the invention, the modification of said wall is arranged as a plurality of lands and grooves (12) which have a direction that is inclined in relation to the longitudinal axis of the cartridge barrel.

Cartouche d'injection (1) du type à double chambre, possédant un passage de dérivation (12) entre les deux chambres (9, 10), ce passage étant conçu de façon à ce que la paroi interne de la cartouche soit modifiée dans une zone prédéterminée de telle manière que la paroi mobile (11) située entre les deux chambres ne fasse pas complètement étanchéité avec la paroi interne dans ladite zone. Ladite paroi est modifiée en ce qu'elle présente une pluralité de filets et de rainures (12) orientés dans un sens incliné par rapport à l'axe longitudinal du cylindre de la cartouche.

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