Infusion apparatus capable of measuring a fluid delivery rate ta

Details Infusion apparatus capable of measuring a fluid delivery rate ta Infusion apparatus capable of measuring a fluid delivery rate ta

1993-04-02

1994-12-06

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604 65, 604151, 604154, 128DIG12, 128DIG13, 417 22, 417 63, A61M 3100

Patent

active

053706129

ABSTRACT:
A slit disk having a hole at a specified portion of its flat surface and a plurality of slits at regular intervals at a peripheral portion thereof is mounted to a shaft of an infusion pump. A controller clears a live band determination counter based on a light detection signal from a sensor when the hole is detected, and increments the count value of a live band determination counter when an side edge of one of the plurality of slit is detected. When the count value of the live band determination counter falls within "10" to "24" or "0" to "2", it is determined that the infusion pump is in a live band, and the count value of the live band counter is incremented. Thus an operation amount of the infusion pump in the live band is detected to measure a fluid delivery rate taking a dead band into account.

REFERENCES:
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patent: 4850805 (1989-07-01), Madsen et al.
patent: 4919650 (1990-04-01), Feingold et al.
patent: 5068586 (1991-11-01), Kawahara et al.

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