Pump-oxygenator

Details Pump-oxygenator Pump-oxygenator

1997-01-27

1999-11-02

Weiss, John G.

Chemical apparatus and process disinfecting, deodorizing, preser

Blood treating device for transfusible blood

Oxygenator

604 4, A61M 114, A61M 134, A61M 136

Patent

active

059764635

ABSTRACT:
In a pump-oxygenator, artificial lungs are located in a blood delivery line for adding oxygen to a blood stream flowing through the blood delivery line and removing carbonic acid gas therefrom. A plurality of sub-reservoirs are located upstream of a main reservoir to store blood therein. A plurality of sub-suction lines for blood are respectively connected to the plurality of sub-reservoirs. The pump is driven to supply a negative pressure with the main reservoir, a magnitude of which is smaller than a negative pressure induced in the sub-reservoirs so as to draw the blood from the sub-reservoirs and the blood-drawing line to the main reservoir. A controller has control sections each supplied with a negative pressure by a negative pressure source, and connected to the corresponding sub-reservoirs and the main reservoir by way of negative pressure lines so as to control the negative pressure in each of the sub-reservoirs and the main reservoir at a preset value.

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Koyama et al. "Usefulness of `Low-Vacuum Suction Method` for Cardiopulmonary Bypass" Artificial Organs vol. 24, No. 2 (1995), pp. 595-599.
Hiroura et al. "Trial of a Roller Pump-less Heat-lung System" published by American Society of Extra-Corporeal Technology; conference held Mar. 1996.
Official Conference Program of the American Society of Extra-Corporeal Technology International Conference held Mar. 8-11, 1996, Dallas Texas (3 pages).

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