Transfusion pump

Details Transfusion pump Transfusion pump

1990-07-20

1992-02-18

Smith, Leonard E.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

604153, F04B 4312

Patent

active

050889044

ABSTRACT:
A transfusion pump includes a housing disposed to oppose a tube filled with a liquid to be supplied, a plurality of fingers mounted on the housing along a liquid supply direction to urge the tube, a drive shaft for pivotally reciprocally supporting the tube in a direction to urging the tube, cams engaged with the fingers rotatably supported by the drive shaft, a drive motor for sequentially driving the cams so that the fingers which are engaged with the corresponding cams sequentially urge the tube in the liquid supply direction, and a biasing member, arranged to be engaged with the fingers, for biasing the fingers to be in contact with the corresponding cams.

REFERENCES:
patent: 4561830 (1985-12-01), Bradley
patent: 4648812 (1987-03-01), Kobayashi et al.
patent: 4725205 (1988-02-01), Cannon et al.
patent: 4728265 (1988-03-01), Cannon
patent: 4755109 (1988-07-01), Botts
patent: 4869646 (1989-09-01), Gordon et al.
patent: 4909710 (1990-03-01), Kaplan et al.
patent: 4954046 (1990-09-01), Irvin et al.

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