Closed circuit breathing device with pressure sensing means

Details Closed circuit breathing device with pressure sensing means Closed circuit breathing device with pressure sensing means

1989-06-22

1991-12-31

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820426, 12820513, 12820516, 12820524, A62B 704, A62B 900, A61M 1600

Patent

active

050762672

ABSTRACT:
A circulation respirator is capable of excess-pressure operation with a compressed gas source and an auxiliary pressure arrangement which brings about an increase in the pressure in the respiratory circulation. The apparatus includes measuring circuit connected to a pressure sensor for controlling the auxiliary pressure arrangement. Excess pressure is maintained in the respiratory circulation independently of the respiratory phase. The sensor is arranged as pressure sensor in the respiratory circulation only if the pressure falls below a preset positive nominal value of the pressure in the respiratory circulation. A method of operating a respirator system which includes a respirator bag connected through an inhalation duct to a patients respirator gas connector to the respirator bag comprising sensing the pressure in a pressurized respiratory gas connection to the inhalation duct, and connecting an additional pressurized gas to the inhalation duct when the pressure in the said gas connection falls below a predetermined pressure.

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