Patent ID: 7726956
Filing Date: 2010-06-01
Classification: A61M,F04B

Abstract:
1. A combination assembly for managing a pump hose or elastic pump tube or pump channel used in a peristaltic pump, wherein the pump comprises a rotor ( 3 ) that compresses the hose/tube and an assembly that adjusts the pump pressure and/or compression imposed on the hose/tube, the assembly comprising a steplessly adjustable eccentric adjustment mechanism which cooperates with the rotor to directly control the compressive force imposed on the hose/tube, the eccentric adjustment mechanism comprising an eccentric adjustment bushing ( 5 ) mounted on a crankshaft pin ( 10 ), a worm gear ( 6 ) having an end ( 18 ) dimensioned and configured to be rotated by means of a calibrated torque wrench, wherein said worm gear is mounted inside the eccentric adjustment bushing, a spur gear ( 9 ), a lockcover ( 4 ), lockpins ( 11 ) and at least one locking bolt ( 12 ), wherein a fixed torque is applied to the worm gear ( 6 ) using the calibrated torque wrench that rotates the worm gear ( 6 ) and the eccentric adjustment bushing ( 5 ) mounted on the crankshaft pin ( 10 ) whereby the gap ( 23 ) between the rotor outer surface and a pump cavity inner periphery is changed and a constant compressive force is imposed on the hose/tube.