Patent ID: 6808369
Filing Date: 2004-10-26
Classification: A61M,F04B,G05D,Y10T

Abstract:
A system for regulating fluid pump pressures, the system comprising:a fluid flow control device including at least one liquid volume in valved communication with a distal end of a fluid line, the fluid flow control device including pressure means for pressurizing the liquid volume; a valve arrangement between the at least one liquid volume and the distal end of the fluid line for controlling fluid communication between the at least one liquid volume and the distal end; a transducer in fluid communication with the at least one liquid volume for measuring a pressure associated with the at least one liquid volume; and a controller for receiving information from the transducer and for controlling the valve arrangement, the means for pressurizing the liquid volume, and the fluid pump pressure, and wherein the controller estimates, based on information received from the transducer, a relative elevation between the fluid control device and the distal end and adjusts the fluid pump pressure in accordance with the relative elevation to obtain a desired pressure at the distal end.