Disposable autotransfusion device

Details Disposable autotransfusion device Disposable autotransfusion device

1981-08-05

1984-01-03

Rosenbaum, C. Fred

Surgery

Blood drawn and replaced or treated and returned to body

A61M 3500

Patent

active

044240538

ABSTRACT:
An autotransfusion device for collecting blood from a pool in a patient and for subsequently returning the collected blood to the circulatory system of the patient is disclosed. The device includes a liquid collection chamber having a movable wall and a stationary wall. The liquid collection chamber is connected to the pool of blood by an aspirator and to a suction source to draw the blood into the collection chamber. After the collection chamber is filled to the capacity desired, a compressed spring is released to urge the movable wall toward the stationary wall. The blood is forced out of the collection chamber by the compressed spring and back to the circulatory system of the patient.

REFERENCES:
patent: 2828694 (1958-04-01), Nallinger
patent: 3162324 (1964-12-01), Houser
patent: 3799702 (1974-03-01), Weischaar
patent: 3965896 (1976-06-01), Swank
patent: 4231366 (1980-11-01), Schael
patent: 4261362 (1981-04-01), Kurtz et al.
patent: 4278089 (1981-07-01), Huck et al.

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