Patent ID: 8133035
Filing Date: 2012-03-13
Classification: F04B

Abstract:
1. Method for controlling the flow rate in a peristaltic pump comprising occlusion means for compressing a flexible tube, creating at least one zone of occlusion moving cyclically from an upstream part to a downstream part of the pump, the occlusion means comprising mobile compression means that compress the tube toward a counter surface, the occlusion means being actuated by control means placed on a rotation shaft, wherein the occlusion means in the furthest downstream part of the pump remain in the occlusive position for a greater portion of the cycle than the occlusion means in a further upstream part of the pump, wherein the zone of occlusion downstream is not removed until the pressure in the section of tubing directly upstream of this zone of occlusion is equal to or greater than the pressure in the section of tubing directly downstream of this occlusion.