Patent ID: 7163381
Filing Date: 2007-01-16
Classification: A61M,F04B

Abstract:
1. A pump for propelling liquid through a lumen of a flexible tube segment, the pump comprising: a first tube-clamping member; a first set of tube squeezing members; a second tube-clamping member; a second set of tube squeezing members, said members arranged in a direction from upstream to downstream; a motor; a motor control in operative connection with the motor, the motor control providing energy to the motor to drive the motor and receiving feedback from the motor of motor function, the motor control comprising a motor control protocol that controls the energy to the motor based upon the feedback received from the motor, the motor control protocol causing an impulse increase in energy provided to the motor if motor feedback indicates a stall load on the motor; and a synchronizing device operably associated with the motor and said members, the synchronizing device operable to activate said members in a sequential order such that fluid in the tube is displaced in a downstream direction.