Gas monitoring device, gas monitoring method and medical equipment
A gas monitoring and gas technology, applied in measuring devices, other medical devices, medical science, etc., can solve problems such as reducing the accuracy of calculation results, and achieve the effects of reducing influence, improving accuracy, and providing accuracy
Active Publication Date: 2013-06-19
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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Problems solved by technology
During the monitoring process, changes in the measurement environment will have varying degrees of impact on the calculation results, which will reduce the accuracy of the calculation results
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[0024] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0025] In clinical practice, the inventors found that when measuring the gas concentration, the gas concentration is often affected by the state of the airway. influence, resulting in certain errors in the measurement results. On the other hand, when measuring respiratory mechanics, the parameters of respiratory mechanics will be affected by the type of gas. There are different types of gas in the airway. When the gas composition in the airway changes, the density and viscosity of the gas in the airway will change. Changes will also bring errors to the measurement results of respiratory mechanical parameters. For example, due to the influence of gas density, viscosity and other factors, the respiratory mechanical characteristics of the airway of the subject have changed. If no correction is made, wrong measurement results will be ...
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The invention discloses a gas monitoring device, a gas monitoring method and medical equipment. The gas monitoring device comprises a gas concentration monitoring module, a respiratory mechanics monitoring module and a correction module, wherein the correction module determines a first correction value according to gas composition and the concentration of tested gas to enable the respiratory mechanics monitoring module to conduct correction to respiratory mechanics parameters according to the first correction value, or the correction module determines a second correction value according to a stress related quantity detected by the respiratory mechanics monitoring module to enable the gas concentration monitoring module to conduct correction to gas concentration according to the second correction value, and thus the accuracy of the respiratory mechanics parameters and gas concentration measurement is improved.
Description
technical field [0001] The invention relates to a gas monitoring device, in particular to a gas monitoring device for the airway of a patient during anesthesia. Background technique [0002] Gas monitoring mainly includes two categories, gas concentration monitoring and airway respiratory mechanics monitoring. The measurement principle of gas concentration monitoring is generally based on non-dispersive infrared spectroscopy (NDIR), that is, according to the absorption characteristics of a certain band of infrared light by the measured gas, select a specific band of infrared light to pass through the gas sample, and monitor the absorption of this band to measure the gas concentration. The type of gas monitoring is related to the selection and number of infrared bands. The measurement principle of respiratory mechanics monitoring is to obtain the three basic parameters of airway pressure, airway flow and time by measuring the pressure of gas at several points in the airway,...
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IPC IPC(8): G01D21/02A61M16/01
CPCA61B5/08G01N33/497A61M2016/0027A61M2016/0033A61M2016/102A61M2230/43A61B5/082A61B5/087A61B5/7203A61B5/7278
Inventor 刘中华蒋良军涂有强岑建官方勇黄光齐希格恩·伊斯莱尔松
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD