Positive displacement stopper for a pre-filled syringe

Details Positive displacement stopper for a pre-filled syringe Positive displacement stopper for a pre-filled syringe

A - Human Necessities

61

M

A61M 5/315 (2006.01)

Patent

CA 2689122

A stopper (12) adapted for attachment with a plunger rod (14) for use within a syringe barrel (16) is disclosed. The stopper includes a main body (26) defining an open rearward end (28) and a closed front end (30). The open rearward end is adapted to receive a front forward end attachment portion (31) of the plunger rod. The stopper also includes a core member (32) integrally formed with said main body adjacent the closed front end. The core member includes a nose portion (34) having a profile adapted to create a positive seal with an outlet opening of such syringe barrel.

L'invention concerne un bouchon conçu pour être fixé à une tige de piston afin d'être utilisé à l'intérieur du cylindre d'une seringue. Ce bouchon comprend un corps principal définissant une extrémité ouverte vers l'arrière et une extrémité avant fermée. L'ouverture arrière ouverte est conçue pour recevoir une partie de fixation d'extrémité avant de la tige de piston. Le bouchon comprend également un élément central solidaire dudit corps principal et contigu à l'extrémité avant fermée. L'élément central possède une partie nez dont le profil est conçu pour créer un joint positif avec l'ouverture de sortie du cylindre de seringue.

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