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1. (WO2016092308) CAPNOMETER

Pub. No.:    WO/2016/092308    International Application No.:    PCT/GB2015/053779
Publication Date: Jun 16, 2016 International Filing Date: Dec 10, 2015
IPC: A61B 5/08
A61B 5/00
Applicants: CAMBRIDGE RESPIRATORY INNOVATIONS LTD
WIDEBLUE LTD
GAS SENSING SOLUTIONS LTD
Inventors: PATEL, Nalinkumar
CARTER, Julian
WALSH, Jeremy
OVEREND, Russell
MCGREGOR, Calum
GIBSON, Des
WADDELL, Ewan
Title: CAPNOMETER
Abstract:
We describe a capnometer for detecting a concentration of a component in a gas, wherein said gas is inhaled and/or exhaled by a patient, said capnometer comprising: an air flow region through which said gas passes to and/or from said patient's lung; a mid-IR semiconductor emitter configured to provide IR light at a wavelength in the range 3-5 μm;a mid-IR semiconductor detector to detect said IR light; a reflector to reflect said IR light emitted by said emitter; wherein said emitter, said detector and said reflector are arranged such that said IR light emitted by said emitter passes through said air flow region via said reflector to said detector.