Patent ID: 8894391

Claim:
A linear peristaltic pump comprising: pumping fingers, a tubing which is resiliently compressible by the fingers and which allows a liquid to circulate within the tubing in a rest position of the tubing, a membrane placed between the pumping fingers and the tubing, and means for keeping a first part of the membrane on which the fingers press, called a track, in permanent contact with ends of the fingers during an entire pumping cycle, even in the absence of the tubing, wherein at least the means for keeping the track in permanent contact with the ends of fingers that have two neighboring fingers have a degree of freedom parallel to a pumping direction oriented along a flow direction of liquid in a longitudinal direction of the tubing, so that during a pumping cycle, the track can have reciprocating translational movement, substantially parallel to the pumping direction, with respect to the ends of said fingers.