Pump chamber and valve for a pump chamber

Abstract

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.

Dependencies are inferred from the claim text.