Fluid infusion pump driver

Details Fluid infusion pump driver Fluid infusion pump driver

1985-12-20

1987-01-27

Truluck, Dalton L.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

74 8915, 128DIG1, 417413, A61M 520

Patent

active

046392459

ABSTRACT:
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 translating 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 generating undue noise or creating accuracy problems.

REFERENCES:
patent: 3156236 (1964-11-01), Williamson
patent: 3336925 (1967-08-01), Thompson
patent: 3985133 (1976-10-01), Jenkins et al.
patent: 4089624 (1978-05-01), Nichols et al.
patent: 4396385 (1983-08-01), Kelly et al.
patent: 4474309 (1984-10-01), Solomon

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