Biological tissue blood microcirculation parameter detecting system
A technology of blood microcirculation and parameter detection, applied in blood flow measurement, diagnostic recording/measurement, medical science, etc., can solve the problem of inconvenient measurement of blood parameters of biological tissues
Inactive Publication Date: 2008-07-09
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0005] In order to overcome the inconvenience of measuring blood parameters of biological tissues in the prior art, the present invention provides a detection system for blood microcirculation parameters of biological tissues. Blood parameters are measured; the joint design of A / D conversion circuit, single-chip microcomputer drive and control circuit, and interface circuit in its signal processing and interface circuit can adapt to various computers, and can simultaneously detect tissue blood oxygen saturation and blood flow change signals , comparative analysis of changes in blood oxygen saturation and blood flow
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[0015] Refer to Figures 1-3. The invention is composed of blood microcirculation parameter sensor, conversion and control circuit and computer. The blood microcirculation parameter sensor includes an optical fiber tube 1, a detection head 2, a fixing belt 3, a light source I, a light source II, a photodetector I, and a photodetector II. There are four sub-fiber tubes in the fiber tube 1, which are the output sub-fiber tube 7 of the photodetector I, the output sub-fiber tube 8 of the photodetector II, the input sub-fiber tube 9 of the light source I and the input sub-fiber of the light source II Tube 10. There are four output optical fibers in the output sub-fiber tube 7 of photodetector 1, output optical fiber I15, output optical fiber II16, output optical fiber III17, output optical fiber IV18, and the outside is covered with a plastic tube respectively. There are also four output optical fibers in the output sub-fiber tube 8 of the photodetector II, output optical fiber V1...
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The invention discloses a biological tissue blood microcirculation parameter detection system, including a first light source, a second light source, a first photoelectric detector, a second photoelectric detector, a difference amplifier and a signal processing and interface circuit. The system is characterized in that the system also includes a first preamplifier circuit and a second preamplifier circuit, the input ends of which are connected with the first photoelectric detector and the second photoelectric detector, and the output ends of which are connected with the difference amplifier. The output end of the difference amplifier is connected with the A / D conversion circuit of the signal processing and interface circuit. The first light source and the second light source are electrically connected with an MCU driving and controlling circuit directly and are connected with a computer through the interface circuit of the MCU driving and controlling circuit. The invention also discloses a special detecting head which is characterized in that the detecting head includes a fiber tube, a rubber pad, a bracket and a base. The bracket is successively and fixedly connected with the base and the rubber pad. The fiber tube is equipped with an opening on the rubber pad after passing through the bracket and the base. Input fibers and output fibers are arranged on the middle part of the rubber pad in parallel. All the fiber heads of the fibers are at the same plane with the rubber pad.
Description
technical field [0001] The invention relates to a detection system for biological tissue blood microcirculation parameters. Background technique [0002] There are many kinds of measurement methods and equipment for the blood microcirculation parameters of biological tissues at home and abroad. Among them, near-infrared spectroscopy is used in clinical practice, mainly for the measurement of blood oxygen saturation. The light source signal uses LED light source, which has weak signal and poor anti-interference performance. The range is limited, and it cannot respond sensitively to small parameter changes. In the detection of blood flow, the measurement system is usually designed and manufactured using the principle of ultrasound or laser Doppler to measure the data. The equipment of this system is huge and expensive, and some measurement methods require invasive testing. In addition, in terms of instrument prices, most of them need to be imported from abroad, so the cost is...
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IPC IPC(8): A61B5/02A61B5/1455A61B5/026
Inventor 史仪凯姚钦袁小庆
Owner NORTHWESTERN POLYTECHNICAL UNIV