A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
341/39, 137/1.5
A61M 16/00 (2006.01) A61M 16/22 (2006.01)
Patent
CA 1240767
ABSTRACT OF THE DISCLOSURE With closed respiratory systems, the patient's respiratory tract is tightly connected to a closed volume to which breathing gas is suppli- ed 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 dis- tinguish consumption from a leak. The inventive device makes this dis- tinction possible. The breathing gas amounts are adjusted in the ven- tilating circuit at preset different pressures and are compared with each other, and the leak portion is computed therefrom.
472162
Bayerlein Jorg
Frankenberger Horst
Obermayer Anton
Wallroth Carl F.
Waschmann Michael
Dragerwerk Aktiengesellschaft
Fetherstonhaugh & Co.
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