Infusion method and infusion pump

Details Infusion method and infusion pump Infusion method and infusion pump

1997-05-22

1999-11-23

Freay, Charles G.

Pumps

Condition responsive control of pump drive motor

Responsive to change in rate of pump fluid flow

417 53, 417478, F04B 4900

Patent

active

059889837

ABSTRACT:
According to an infusion method and pump, in order to perform infusion at a flow rate with high accuracy by allowing finger members to appropriately press a predetermined portion of an outer diameter (outer surface) of an infusion tube whose outer diameter accuracy is assured, thereby causing the infusion tube to perform a peristaltic motion, the infusion tube is stationarily held between a plurality of fingers which are arranged along the longitudinal direction of the infusion tube having a predetermined outer diameter and independently driven, and a holding means. The infusion tube is pressed from the outer surface to supply a liquid by setting a small moving amount of each finger to a degree enough to eliminate the influence of the wall thickness of the infusion tube and individually driving the fingers.

REFERENCES:
patent: 3990444 (1976-11-01), Vial
patent: 4781548 (1988-11-01), Alderson et al.
patent: 5018945 (1991-05-01), D'Silva
patent: 5055013 (1991-10-01), Faeser
patent: 5151019 (1992-09-01), Danby et al.
patent: 5165873 (1992-11-01), Meijer
patent: 5716194 (1998-02-01), Butterfield et al.

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