Fluid infusion pump driver

Details Fluid infusion pump driver Fluid infusion pump driver

A - Human Necessities

61

M

128/91

A61M 5/14 (2006.01) A61M 5/142 (2006.01) G01F 11/08 (2006.01)

Patent

CA 1259871

Abstract of the Disclosure A fluid infusion pump driver device for pumping fluid from the chamber of a disposable cassette., The pump driver includes a reciprocatable plunger. which is driven by a stepping motor. The motor and plunger are coupled through a universal joint which provides a threaded connection trans- lating the incremental angular movements of the motor into incremental linear movements of the plunger, and the plunger is coupled directly to the frame through a flexible leaf spring to prevent wear in the threaded connection from gener- ating undue noise or creating accuracy problems.

524571

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