Portable ventilator apparatus

Details Portable ventilator apparatus Portable ventilator apparatus

1987-11-12

1989-02-28

Chambers, A. Michael

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

417 38, 417 44, A62B 702

Patent

active

048076163

ABSTRACT:
A ventilator apparatus comprises a pump; a delivery conduit for delivering pressurized air to a patient; a relief valve preventing the pressure in the delivery conduit from rising above a predetermined peak value; a sensor for sensing the pressure in the delivery conduit; a storage device for storing the sensed peak pressure; and a comparator for continuously comparing the sensed pressure with the stored peak pressure and effective to energize the pump whenever the sensed pressure is below the stored peak pressure, and to deenergize the pump whenever the sensed pressure is generally equal to the stored peak pressure.

REFERENCES:
patent: 4340044 (1982-07-01), Levy et al.
patent: 4527953 (1985-07-01), Baber et al.
patent: 4579115 (1986-04-01), Wallroth et al.
patent: 4590951 (1986-05-01), O'Connor

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