A Nonlinear Correction Method for Medical Gas Detector
A gas detector and non-linear correction technology, which is applied in the medical field, can solve problems such as non-linear errors, and achieve the effects of reducing surgical risks, high testing accuracy, and improving detection accuracy
Inactive Publication Date: 2020-02-07
THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to solve the defect of non-linear error in existing gas detectors, and propose a non-linear correction method for medical gas detectors, which can correct the non-linear errors of gas detectors, improve the detection accuracy of gas concentration, and reduce the cost of surgery. risk
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] Such as figure 1 As shown, a non-linear correction device for a medical gas detector includes a laser 1, a 1×2 fiber coupler 2, fiber collimators 31 and 32, a standard gas detector 4, a photoacoustic detector 5, and a gas cell 6 , central gas supply system 7; the laser 1 is a fiber pulse laser, the central wavelength is 4.26 μm; the coupling ratio of the 1 × 2 fiber coupler 2 is 50:50, with one input and two output, input The end is connected to the laser 1, and the output end is connected to the fiber collimator 31 and the fiber collimator 32 respectively; the performance of the f...
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Abstract
The invention discloses a nonlinear correction device and correction method for a medical gas detector and belongs to the technical field of medical treatment. The device comprises a laser, a 1*2 optical fiber coupler, two optical fiber collimators, a standard gas detector, an optoacoustic detector, a gas pool and a central gas supply system, wherein the laser is an optical fiber pulse laser with the central wavelength being 4.26 mu m; the 1*2 optical fiber coupler has the coupling ratio of 50:50 and has one input end and two output ends, the input end is connected with the laser, and the output ends are connected with the optical fiber collimators; the two optical fiber collimators have the same property, have the central wavelength of 4.26 mu m and are mounted on one side of the gas pool; the standard gas detector and the optoacoustic detector are mounted on the other side of the gas pool and aligned to the optical fiber collimators respectively; the standard gas detector is a traced pyroelectric detector; the gas pool comprises a gas feed channel and a gas discharge channel; the gas pool is connected with the central gas supply system through the gas feed channel. By means of the device and the method, nonlinear correction can be performed on the gas detector, the test accuracy of gas concentration is improved, and the operative risk is reduced.
Description
technical field [0001] The invention belongs to the field of medical technology, in particular to a nonlinear correction method of a medical gas detector. Background technique [0002] When using a laparoscope for surgical treatment of a patient, it is usually necessary to use a laparoscopic insufflation machine to connect to the central air supply system to inject carbon dioxide gas into the patient's abdominal cavity to provide enough space for the doctor to operate the laparoscope in the patient's body. The existing central gas supply system can not only provide carbon dioxide gas, but also provide various gases, such as oxygen. When carrying out laparoscopic surgery, whether the connection between the laparoscopic insufflation machine and the carbon dioxide gas channel of the central gas supply system is correct, and whether the carbon dioxide gas concentration meets the requirements, have an important impact on the smooth progress of the operation, otherwise it will del...
Claims
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IPC IPC(8): G01N21/17
CPCG01N21/1702G01N2021/1704
Inventor 蔡翠翠王冠容于萌范乐莉杨岩岩张聚颜雪武子菲
Owner THE AFFILIATED HOSPITAL OF QINGDAO UNIV