Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1985-01-14
1986-04-01
Recla, Henry J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820523, A61M 1600
Patent
active
045791155
ABSTRACT:
With closed respiratory systems, the patient's respiratory tract is tightly connected to a closed volume to which breathing gas is supplied only in the amount taken in by the patient. To this end, the breathing gas supply must be controlled. The controlled variable is either the pressure in the ventilating circuit, or the concentration of oxygen or the anesthetic gas in the breathing gas. A dropping pressure indicates either an increased consumption or a leak. To avoid insufficient or excessive loading of the patient, it is very important to be able to distinguish consumption from a leak. The inventive device makes this distinction possible. The breathing gas amounts are adjusted in the ventilating circuit at preset different pressures and are compared with each other, and the leak portion is computed therefrom.
REFERENCES:
patent: 3741208 (1973-06-01), Jonsson et al.
patent: 3951137 (1976-04-01), Conkle et al.
patent: 4150670 (1979-04-01), Jewett et al.
patent: 4444201 (1984-04-01), Itoh
Bayerlein Jorg
Frankenberger Horst
Obermayer Anton
Wallroth Carl F.
Waschmann Michael
Dragerwerk AG
Recla Henry J.
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