Patent ID: 6193480
Filing Date: 2001-02-27
Classification: A61M,F04B

Abstract:
A system for increasing the uniformity of flow of fluid through a conduit comprising:a drive device that moves in movement increments;a pumping mechanism coupled to the drive device that pumps fluid through the conduit in volume increments in response to movement increments of the drive device, with each volume increment corresponding to a respective movement of the drive device, at least some of the volume increments differing from other volume increments; anda processor configured to:group the movement increments into movement groups as a function of the volume increments corresponding to the respective movement increments, with each movement group having a total flow volume equal to the combined volume increments of the movement increments in the movement group, wherein the total flow volumes of all movement groups are approximately equal,assign a group period to each movement group, wherein the group periods of all movement groups are equal;determine an increment period for each movement increment, wherein the combined increment periods of all movement increments in a movement group are approximately equal to the group period for the movement group; andcontrol the drive device to move in the movement increments, with the movement increments occurring at the assigned increment periods.