Apparatus for the detection of carbon dioxide
US12324570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2018 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Nov 29, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to an apparatus (10) apparatus for the detection of carbon dioxide. It is described to place (210) a part of a housing in contact with a skin area of a patient. the part of the housing and a gas measuring chamber within the housing are configured such that gases diffusing through the skin area of the patient enter the gas measuring chamber. radiation is emitted (220) from a radiation source within the housing, wherein at least some of the radiation emitted by the radiation source enters the gas measuring chamber. The radiation entering the gas measuring chamber has wavelengths that extend over an absorption band of carbon dioxide and has wavelengths that extend over a region other than the absorption band of carbon dioxide. A radiation filter is positioned (230) relative to the gas measuring chamber such that an interaction radiation path is defined between the radiation source through the gas measuring chamber to the radiation filter. A first radiation detector is positioned (240) relative to the radiation filter such that a first detection radiation path is defined that is in addition to the interaction radiation path, and a second radiation detector…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.