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Methods and apparatus for collection and analysis of a volume of exhaled gas with compensation for the frequency of a breathing parameter
专利权人:
CAPNIA INC.
发明人:
申请号:
IL23325814
公开号:
IL233258D0
申请日:
2014.06.19
申请国别(地区):
IL
年份:
2014
代理人:
摘要:
Apparatuses are described to accurately determine a gas concentration of a sample of a patients breath. The apparatuses may include a sample compartment, a breath speed analyzer, a gas analyzer, and a processor. The sample compartment includes an inlet that receives the breath. The breath speed analyzer determines the speed of a portion of the breath. The gas analyzer determines a gas concentration. The processor includes an algorithm that determines a degree of non-homogeneity of the sample based on the speed, and a corrected gas concentration based on the degree of non-homogeneity. In some variations, the gas correction is determined independently of patient cooperation. Apparatuses may be tuned based on the intended populations expected breathing pattern ranges such that the sample compartment is filled with a homogenous end-tidal gas sample regardless of an individuals breathing pattern. These apparatuses are useful, for example, for end-tidal CO analysis. Methods are also described.
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