公开(公告)号：EP0536978A1

公开(公告)日：1993-04-14

申请号：EP92309099.7

申请日：1992-10-06

Applicant: FISHER & PAYKEL LIMITED

Inventor： Gradon, Lewis, c/o Fisher & Paykel Ltd. ,  Seakins, Paul John ,  Clark, Andrew Baden, c/o Fisher & Paykel Ltd.

IPC: A61M16/00

CPC classification number: A61M16/16 ,  A61M16/1085 ,  A61M16/1095 ,  A61M16/161 ,  A61M2205/3368 ,  G01N21/314 ,  G01N21/3504 ,  G01N2021/354 ,  G01N2201/084

Abstract: A humidity sensor for use in a medical breathing circuit. The sensor comprises a sensor (10) located in the medical breathing circuit and a source of infrared radiation (13, 14) and an infrared detector (35) which are located remote from the sensor (10). Infrared radiation of a selected frequency spectrum is generated by the source (13, 14), propagated through an optical fibre (17) to the sensor (10) where it is pursed through gases in the breathing circuit and the remaining radiation is returned to the detector (35) through an optical fibre (27). The radiation incident on the detector (35) is a measure of the humidity of the gases in the breathing circuit.

Abstract translation: 用于医疗呼吸回路的湿度传感器。 传感器包括位于医疗呼吸回路中的传感器（10）和远离传感器（10）的红外辐射源（13,14）和红外检测器（35）。 所选频谱的红外辐射由源（13,14）产生，通过光纤（17）传播到传感器（10），在那里它被吸入呼吸回路中的气体，剩余的辐射返回到 检测器（35）通过光纤（27）。 入射到检测器（35）上的辐射是呼吸回路中气体的湿度的量度。