Apparatus and method for measuring energy expenditure using indirect calorimetry
US10271788B2 · kind B2 · utility
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3References
9Claims
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Key dates
| Filing date | Feb 26, 2016 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | May 28, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/435
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention describes an apparatus and method for determining the energy expenditure of a subject by indirect calorimetry where respiratory gases O2 and CO2 are captured in a tent mask coupled through a pneumotach flow meter to a vacuum inlet of a blower fan whose speed is controlled by a computer running a program that ensures that the bias flow being drawn through the mask always exceeds the subject's peak expiratory flow. VO2 and VCO2 and flow values are measured on a breath-by-breath basis and used in arriving at a bias flow adjustment voltage to be applied to the blower fan for adjusting its speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.