Patent · US Expired

End tidal breath analyzer

US6544190B1 · kind B1 · utility

24Cited by

4References

35Claims

0Family size

Assignee

Natus Medical Incorporated · US

Inventors

Matthijs P. Smits · Woodside, US
Bryan Flaherty · Rue de l'Église, US

Key dates

Filing date	Aug 3, 2001
Grant date	Apr 8, 2003
Priority date	—
Expiry date	Aug 3, 2021

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B5/0836
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A noninvasive apparatus and method for measuring a subject's end tidal carbon monoxide concentration is disclosed, featuring the ability to (i) determine carbon monoxide concentration on a breath-by-breath basis, (ii) determine mean carbon monoxide concentration by averaging local carbon monoxide values, (iii) avoid the premature determination that an end tidal phase is over, and (iv) determine when breath variability or system variability will likely preclude accurate testing. The disclosed device and method allow for more robust determination of end tidal carbon monoxide concentration in subjects with turbulent or irregular breath patterns.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.