Method for determining an aspiration flow and time

Details Method for determining an aspiration flow and time Method for determining an aspiration flow and time

2007-04-03

2007-04-03

Yu, Justine R. (Department: 3771)

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

C128S204210, C128S204180

Reexamination Certificate

active

10801020

ABSTRACT:
In a method and apparatus for determining an aspiration flow and an aspiration time during aspiration of a dead space, the aspiration is made more effective by determining the volume of the dead space to be aspired during an expiration, determining an expiration flow with respect to time during at least a latter part of the expiration, and optimizing the aspiration time and the aspiration flow from the determined volume of the dead space and the measured expiration flow with respect to time is such a way that the dead space can be aspirated during an ongoing expiration with a minimum of interference to the flow balance in the expiration flow as observed from a point upstream and/or downstream the dead space.

REFERENCES:
patent: 3961627 (1976-06-01), Ernst et al.
patent: 4535766 (1985-08-01), Baum
patent: 6761166 (2004-07-01), Ahlmen et al.
patent: 6799570 (2004-10-01), Fisher et al.
patent: 2001/0009152 (2001-07-01), Bennarsten
patent: 0 778 035 (1997-06-01), None
patent: 1 329 238 (2002-11-01), None
patent: WO 91/19526 (1991-12-01), None
“Aspiration of Dead Space Allows Normocapnic Ventilation at Low Tidal Volumes in Man,” De Robertis et al. Intensive Care in Medicine, vol. 25, (1999) pp. 674-679.

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