A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/08 (2006.01)
Patent
CA 2284796
The invention concerns a device and method for determining the level of nitric oxide in exhaled air, where an initial device is arranged to determine the current portion of nitric oxide and/or the distribution of nitric oxide over time during an exhalation phase. During the commencing period of the exhalation phase, the exhaled air is arranged to pass with no or with only a very small resistance or back-pressure to a free space, and during the remaining period, the exhaled air is arranged to pass through the said initial device against the action of a suitable resistance or back-pressure. Further, portions of the exhaled air can be distinguished from the flow of exhaled air by collecting or diverting portions corresponding to fractions or multiples of the estimated dead space of the individual under study.
L'invention concerne un dispositif et un procédé permettant de déterminer le taux de monoxyde d'azote dans l'air expiré. Un dispositif initial est conçu pour déterminer le taux courant de monoxyde d'azote pendant une phase d'expiration. Selon l'invention, l'air expiré passe, pendant la période de commencement de la phase d'expiration, sans ou avec une très faible résistance ou contre-pression dans un espace libre et, pendant la période restante, l'air expiré traverse ledit dispositif initial à l'encontre de l'action d'une résistance ou contre-pression adaptée. De plus, on peut distinguer des parties d'air expiré du flux d'air expiré par regroupement ou détournement de parties correspondant à des fractions ou multiples de l'espace mort estimé de l'individu examiné.
Gustafsson Lars Erik
Persson Gunnar Magnus Severus
Stromberg Stefan Per Axel
Aerocrine Ab
Gowling Lafleur Henderson Llp
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