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公开(公告)号：US20210146075A1
公开(公告)日：2021-05-20
申请号：US16606102
申请日：2018-04-19
Applicant: Medclair AB
Inventor： István Szabó , Jerker Sundling , Tomas Nyberg
Abstract: The invention relates to an apparatus (1) for catalytic decomposition of nitrous oxide in a gas stream derived from exhalation air from a patient. The apparatus (1) comprises an inlet arrangement (2) with a gas inlet (3) for the exhalation air, an outlet arrangement (11) with a gas outlet (12) for an outlet gas, and between these arrangements a through-flow decomposition chamber (9) containing a catalyst material. According to the invention the apparatus is provided with a nitrous oxide adsorption/desorption means (4) in the inlet arrangement (2) for level out variations in the concentration of nitrous oxide fed to the decomposition chamber (9).
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公开(公告)号：US20240159664A1
公开(公告)日：2024-05-16
申请号：US18282458
申请日：2022-03-16
Applicant: Medclair AB
Inventor： István Szabó , Jerker Sundling , Tomas Nyberg
IPC: G01N21/3518 , G08B21/12
CPC classification number: G01N21/3518 , G08B21/12 , G01N2201/0235 , G01N2201/0245
Abstract: The present invention relates to a gas sensor (100) comprising a measurement chamber (102) for measuring presence of a first gas, the first gas being nitrous oxide (N2O) and an optical source (103) for emitting radiation in the measurement chamber (102). The sensor also comprises a radiation detector (104) sensitive to radiation emitted by the optical source (103), the radiation being detected by the radiation detector (104) following passage through the measurement chamber (102). A diffusion layer (131) is configured to allow diffusion of ambient gas into and out from the measurement chamber (102), and the diffusion layer (131) comprises means (133) for preventing diffusion of carbon dioxide (CO2) in the ambient gas into the measurement chamber (102). The invention also relates a nitrous oxide detector comprising such a gas sensor, and a method for determining presence of nitrous oxide in the ambience.
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公开(公告)号：US11565062B2
公开(公告)日：2023-01-31
申请号：US16606102
申请日：2018-04-19
Applicant: Medclair AB
Inventor： István Szabó , Jerker Sundling , Tomas Nyberg
Abstract: The invention relates to an apparatus (1) for catalytic decomposition of nitrous oxide in a gas stream derived from exhalation air from a patient. The apparatus (1) comprises an inlet arrangement (2) with a gas inlet (3) for the exhalation air, an outlet arrangement (11) with a gas outlet (12) for an outlet gas, and between these arrangements a through-flow decomposition chamber (9) containing a catalyst material. According to the invention the apparatus is provided with a nitrous oxide adsorption/desorption means (4) in the inlet arrangement (2) for level out variations in the concentration of nitrous oxide fed to the decomposition chamber (9).
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