Infusion pump with different operating modes

Details Infusion pump with different operating modes Infusion pump with different operating modes

1995-03-06

1997-11-04

Hafer, Robert A.

Surgery

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

Treating material introduced into or removed from body...

604151, 604153, 128DIG13, A61M 100

Patent

active

056833679

ABSTRACT:
An infusion method and apparatus for infusing liquid into a patient, the infusion apparatus being compatible with a plurality of different types of cassettes which are adapted to be insertable into and removable from the infusion apparatus. The infusion apparatus has a housing adapted to receive a first type of cassette and a second type of cassette, a pump disposed in the housing and adapted to pump liquid through a conduit, and a cassette sensor disposed in the housing, the cassette sensor being capable of determining whether the first type of cassette is inserted into the housing or the second type of cassette is inserted into the housing. The infusion apparatus includes control means for controlling the operation of the pump which causes a first course of control action to be taken when the first type of cassette is inserted into the housing and a second course of control action to be taken when the second type of cassette is inserted into the housing. The control means may cause the pump to be operated in a first operating mode when the first type of cassette is inserted into the housing and in a second operating mode when the second type of cassette is inserted into the housing. The control means may include means for comparing a programmed infusion rate with a predetermined infusion rate, and means for preventing the pump from pumping liquid through the conduit if the programmed infusion rate exceeds the predetermined infusion rate.

REFERENCES:
patent: 4690673 (1987-09-01), Bloomquist
patent: 4741736 (1988-05-01), Brown
patent: 4756706 (1988-07-01), Kerns et al.
patent: 4850807 (1989-07-01), Frantz
patent: 5006997 (1991-04-01), Reich
patent: 5009641 (1991-04-01), Gorton
patent: 5244463 (1993-09-01), Cordner, Jr. et al.
patent: 5298021 (1994-03-01), Sherer
patent: 5431627 (1995-07-01), Pastrone et al.
patent: 5531698 (1996-07-01), Olsen

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