Linear peristaltic pump

Details Linear peristaltic pump Linear peristaltic pump

1989-10-23

1990-03-20

Smith, Leonard E.

Pumps

Processes

417474, 604153, F04B 4312

Patent

active

049097105

ABSTRACT:
A linear peristaltic pump equipped with a pressure relief mechanism for pumping I.V. fluids to a patient comprises a platen for supporting the tube, and a plurality of fingers which sequentially urge against the tube resting against the platen for creating a moving zone of occlusion. Cam lobes are formed to lift a penultimate and ultimate finger off of the tube at a rate faster than the other fingers to prevent pressure increases inside the tube which would otherwise be caused by other fingers urging against the tube. Additionally, the ultimate finger may be shortened with respect to the other fingers to reduce the total occlusion time of the ultimate finger to provide a more linearized flow of fluid to the patient.

REFERENCES:
patent: 3606596 (1971-09-01), Edwards
patent: 3658445 (1972-04-01), Pulman et al.
patent: 4482347 (1984-11-01), Borsanyi
patent: 4653987 (1987-03-01), Tsuji et al.
patent: 4725205 (1988-02-01), Cannon et al.
patent: 4728265 (1988-03-01), Cannon
patent: 4731057 (1988-03-01), Tanaka et al.
patent: 4755109 (1988-07-01), Botts
patent: 4781548 (1988-11-01), Alderson et al.
patent: 4836752 (1989-06-01), Burkett

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