A bung for drug containing cartridges in drug delivery devices

Details A bung for drug containing cartridges in drug delivery devices A bung for drug containing cartridges in drug delivery devices

A - Human Necessities

61

M

A61M 5/315 (2006.01)

Patent

CA 2760760

The present invention relates to a bung (20) for drug containing cartridges (10) for use in drug delivery devices wherein the bung (20) has a distal end face (22), a proximal end face (24) and a lateral area (26), wherein the bung (20) comprises at least two different materials, a first material (30) covering the whole lateral area (26) of the bung (20) and a second material (32) which is at least partly arranged inside the bung (20), wherein the first material(30) has a larger compressibility than the second material (32) and wherein the whole lateral area (26) has a flat surface. Furthermore, it relates to a cartridge (10) and to a drug delivery device comprising a bung (20) as claimed.

La présente invention concerne un bouchon (20) pour cartouches contenant un médicament (10) destiné à être utilisé dans des dispositifs d'administration de médicament. Ledit bouchon (20) possède une surface d'extrémité distale (22), une surface d'extrémité proximale (24) et une zone latérale (26). En outre, le bouchon (20) comprend au moins deux matériaux différents, un premier matériau (30) recouvrant l'ensemble de la zone latérale (26) du bouchon (20) et un second matériau (32) au moins partiellement disposé à l'intérieur du bouchon (20). Ledit premier matériau (30) présente une compressibilité supérieure à celle du second matériau (32) et l'ensemble de la zone latérale (26) possède une surface plane. En outre, la présente invention concerne une cartouche (10) et un dispositif d'administration de médicament comprenant un bouchon (20) conforme à la description.

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