Apparatus for controlling the flow of an infusion fluid in an in

Details Apparatus for controlling the flow of an infusion fluid in an in Apparatus for controlling the flow of an infusion fluid in an in

1988-11-30

1990-03-20

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604253, 128DIG13, A61M 500

Patent

active

049097865

ABSTRACT:
An apparatus for controlling the flow of an infusion fluid in an infusion system with a drip chamber and a deformable tube, is provided with a sensor for detecting the drops of infusion fluid falling in the drip chamber, means for seting a desired flow rate, pinch clamp means for pinching off the deformable tube and a processing unit for controlling the pinch clamp means is dependence of the set desired flow rate and the signal of the sensor. The pinch clamp means is movable with a variable speed between a rest position in which the tube is fully released, and a closed position in which the tube is fully closed. The speed in a controlling range preceding the closed position is substantially lower than the speed adjacent the rest position.

REFERENCES:
patent: 4443216 (1984-04-01), Chappell
patent: 4507112 (1985-03-01), Hiller et al.
patent: 4525163 (1985-06-01), Slavik et al.
patent: 4820268 (1989-04-01), Kawamura et al.

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