Pump chamber and valve for a pump chamber

Details Pump chamber and valve for a pump chamber Pump chamber and valve for a pump chamber

A - Human Necessities

61

M

A61M 5/152 (2006.01) A61M 5/142 (2006.01) A61M 39/22 (2006.01) F04B 43/00 (2006.01) F04B 53/10 (2006.01) F16K 15/14 (2006.01) A61M 5/14 (2006.01) A61M 5/36 (2006.01)

Patent

CA 2211237

The present invention relates to a pump chamber (1) for a pump intended primarily for infusion systems for medical use, said pump chamber comprising walls (21, 28) delimiting said chamber and an inlet (22) and an outlet (23), a part of said walls of said pump chamber being formed by a flexible membrane (40, 90), said membrane being actuatable by a reciprocally movable actuating means (80), thus varying the volume of the pump chamber in accordance with the movements of said actuating means. The membrane (40, 90) has a convex domed shape projecting outwardly from said pump chamber (1) and is made of a resiliently flexible material, the apex of the domed membrane being acted upon by said actuating means, said actuating means having a stroke which may be adjusted to the amount of the dose to be administered. The invention also relates to a valve for a pump chamber.

La présente invention concerne une chambre (1) de pompe pour une pompe destinée essentiellement à des systèmes de perfusion à usage médical. Cette chambre de pompe comprend des parois (21, 28) délimitant ladite chambre, une entrée (22) et une sortie (23). Une partie des parois latérales de ladite chambre de pompe est formée par une membrane souple (40, 90), qui peut être actionnée par un moyen d'actionnement (80) à mouvement de va-et-vient qui fait varier le volume de la chambre de pompe. La membrane (40, 90) a la forme d'un dôme convexe saillant de ladite chambre de pompage (1) et est constituée d'un matériau souple et élastique. Ledit moyen d'actionnement agit sur le sommet de la membrane formant un dôme, la course dudit moyen pouvant être ajustée suivant la dose à administrer. L'invention concerne également une valve pour une chambre de pompe.

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