Breathing apparatus and oxygen concentration detection mechanism
A technology for detecting mechanism and oxygen concentration, which is applied in the field of medical devices, can solve problems such as inability to calibrate oxygen sensors, and achieve the effect of improving accuracy
Active Publication Date: 2016-06-29
SHENZHEN COMEN MEDICAL INSTR
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Problems solved by technology
[0004] Based on this, it is necessary to provide a breathing device and its oxygen concentration detection mechanism for the problem that the oxygen sensor cannot be calibrated when the breathing device is working.
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[0033] In order to facilitate the understanding of the present invention, the breathing device and its oxygen concentration detection mechanism will be described more fully below with reference to the relevant drawings. The preferred embodiment of the breathing device and its oxygen concentration detection mechanism is given in the accompanying drawings. However, the breathing device and its oxygen concentration detection mechanism can be implemented in many different forms, and are not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the breathing device and its oxygen concentration detection mechanism more thorough and comprehensive.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the breathing appa...
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The invention relates to a breathing apparatus and an oxygen concentration detection mechanism. The oxygen concentration detection mechanism is used for detecting the oxygen concentration of gas outputted from main equipment; the oxygen concentration detection mechanism comprises an air-oxygen gating switch, an accommodating cavity, a switch valve and an oxygen sensor, wherein two gas inlets of the air-oxygen gating switch are communicated with an oxygen channel and an air channel; the accommodating cavity is communicated with a gas outlet of the air-oxygen gating switch; the accommodating cavity is communicated with external atmosphere, and the accommodating cavity is communicated with a mixed gas channel; the switch valve is located between the accommodating cavity and the mixed gas channel as well as between the gas outlet and the accommodating cavity; the oxygen sensor is connected to the accommodating cavity; and the oxygen sensor is used for detecting the oxygen concentration of gas in the accommodating cavity. The oxygen concentration detection mechanism is connected to the main equipment in parallel; by virtue of the air-oxygen gating switch, air or oxygen is supplied into the accommodating cavity; and the oxygen sensor can be calibrated when the main equipment works normally, so that the accuracy of the oxygen sensor is improved.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a breathing apparatus and an oxygen concentration detection mechanism thereof. Background technique [0002] During the application of medical breathing devices such as ventilators and anesthesia machines, patients must be mechanically ventilated. For patients undergoing treatment, the control of oxygen concentration is very important, especially for infants and critically ill patients. , so the monitoring and calibration of oxygen concentration is a must. [0003] General ventilators and anesthesia machines use oxygen sensors to monitor and detect the concentration of mixed gases. Oxygen sensors need to be calibrated frequently to ensure their accuracy. When calibrating the oxygen sensor, the machine needs to be in the standby state, and the oxygen sensor is calibrated first, and then the air is fed in, which will affect the normal operation of the machine. Contents o...
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Login to View More IPC IPC(8): A61M16/01A61M16/12G01N33/00
CPCA61M16/01A61M16/20
Inventor 李增沈良钢谈恒
Owner SHENZHEN COMEN MEDICAL INSTR