Device for the measurement of oxygen consumption

Details Device for the measurement of oxygen consumption Device for the measurement of oxygen consumption

2005-06-30

2009-11-24

Douglas, Steven O (Department: 3771)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S204230

Reexamination Certificate

active

07621271

ABSTRACT:
Device for the measurement of oxygen consumption which, by use of a mixing chamber of small dimensions, allows compensation of the time delay between the measurement of the ventilation VEand that of average oxygen concentration of the exhaled air volume FeO2. The time delay between measurement of VEand FeO2maintains a constant value under all ventilations, thanks to a dynamic control of the air quantity collected and introduced in the microchamber and to a dynamic update of proportion factor K, performed by a control system. This enables a precise measurement of oxygen consumption also with rapid ventilation changes.

REFERENCES:
patent: 4631966 (1986-12-01), Brugnoli
patent: 4658832 (1987-04-01), Brugnoli
patent: 6475158 (2002-11-01), Orr et al.
patent: 2006/0241507 (2006-10-01), Carlson et al.

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