Lung ventilator safety circuit

Details Lung ventilator safety circuit Lung ventilator safety circuit

A - Human Necessities

61

M

A61M 16/00 (2006.01) A61M 16/20 (2006.01)

Patent

CA 2157537

The lung ventilator safety valve circuit includes a normally open, pulse width modulated solenoid safety valve connected to a patient airway of a ventilator system. A pressure sensor monitors pressure in the patient airway, and a control unit maintains the safety valve closed when the pressure is not excessive. The safety valve is opened when the sensed pressure equals or exceeds a maximum airway pressure threshold that can be set by an operator, or in the event of a power failure.

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