Electrical medical vacuum regulator

Details Electrical medical vacuum regulator Electrical medical vacuum regulator

A - Human Necessities

61

H

A61H 31/00 (2006.01) A61M 1/00 (2006.01) A62B 7/00 (2006.01)

Patent

CA 2105472

ELECTRICAL MEDICAL VACUUM REGULATOR ABSTRACT A medical vacuum regulator (10) with a solenoid regulating valve (20) and a comparator (22) for electrically, automatically controlling the solenoid regulating valve (20) to intermittently open and close to achieve a preselected regulated vacuum (v) which is continuously provided or in intermittent mode decreases during a relaxation period (35) to atmosphere (30) and automatically increases during a ramp period (29) of a vacuum cycle (21 ) to prevent vacuum surge traumato a patient (14). The regulating valve (20), in addition to regulating the vacuum during the vacuum cycle (21), continuously vents the system to atmosphere (30) when a patient venting solenoid valve (48) vents the patient (14) to atmosphere (30) to reduce the load on a vacuum pump (12). The continuous and intermittent modes of operation are selected by a mode selection circuit (36) with means for maintaining it in its selected state during a period of temporary power loss.

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