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Title:
DRIVER FOR GAS DRIVE PUMP
Document Type and Number:
Japanese Patent JPS60128978
Kind Code:
A
Abstract:

PURPOSE: To enable highly accurate pressure regulation in such driver for driving a gas drive pump through continual or alternative function of positive and/or negative pressure, by controlling pressure regulating means on the basis of difference between the detected level and setting level of positive and/or negative pressure.

CONSTITUTION: When applying on a driver for a suck type blood pump 5, air compressed by a compressor 1 is fed through an electro-pneumatic flow control valve 8 to a positive pressure tank 3 while to suck the air in a negative pressure tank 4 by a vacuum pump 2 through an electro-pneumatic flow control valve 9 thus to maintain the pressure in each tank 3, 4 at predetermined level. In other word, the pressure in each tank 3, 4 is detected through electro-pneumatic converters 10, 11 to control each flow control valve 8, 9 when the pressure is lower than the setting level at the tank 3 side or when higher than the setting level at the tank 4 side. Then solenoid valves 6, 7 are opened/closed alternatively to function positive and negative pressures alternatively onto the blood pump 5 thus to feed blood.


Inventors:
Tsuji, Takashi
Hiramatsu, Teruaki
Application Number:
JP1983000236043
Publication Date:
July 10, 1985
Filing Date:
December 16, 1983
Export Citation:
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Assignee:
NIPPON ZEON CO LTD
International Classes:
A61M1/10; F04B9/12; F04B9/123; F04B43/06; F16K11/07; (IPC1-7): F04B9/12
Domestic Patent References:
JPS5899967A1983-06-14
JP46011004U



 
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