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Noninvasive blood oxygen saturation detector

A technology for saturation and detectors, applied in the field of non-invasive blood oxygen saturation detectors, can solve the problems that cannot be used as real-time monitoring, and achieve the effects of low power consumption, low cost and broad application prospects

Inactive Publication Date: 2015-05-20
宫俊峰
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

It includes blood pH, PO 2 , PCO 2 The measured value also includes calculated blood oxygen saturation and other parameters, but this method is an invasive measurement, and there are some restrictions on the collection of blood samples, so it cannot be used as a real-time monitoring method

Method used

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  • Noninvasive blood oxygen saturation detector

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Embodiment Construction

[0014] A non-invasive blood oxygen saturation detector, which is composed of a light source driving circuit, a timing control circuit, a single-chip microcomputer, an I / V conversion circuit, a signal filtering circuit, a gain control circuit, and LEDs; wherein, the light source driving circuit and the I / V conversion circuit There are red LEDs and infrared LEDs connected in parallel, the I / V conversion circuit is connected with the signal filter circuit, the gain control circuit, the single chip microcomputer and the timing control circuit in turn, and the other end of the timing control circuit is connected with the light source driving circuit.

[0015] Among them, the I / V conversion circuit uses the AD795 type I / V conversion chip, and its feedback resistance is 20MW, and a 10uF small capacitor is connected in parallel at both ends to form an integral circuit, which can further reduce the input current noise, and converts the photocurrent signal into A voltage signal proporti...

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Abstract

The invention relates to the technical field of modern electronic technologies and medical instruments, in particular to a noninvasive blood oxygen saturation detector. The noninvasive blood oxygen saturation detector is composed of a light source drive circuit, a sequential control circuit, a single chip microcomputer, an I / V conversion circuit, a signal filtering circuit, a gain control circuit and LEDs. A red light LED and an infrared light LED are connected between the light source drive circuit and the I / V conversion circuit in parallel. The I / V conversion circuit is connected with the signal filtering circuit, the gain control circuit, the single chip microcomputer and the sequential control circuit in sequence. The other end of the sequential control circuit is connected with the light source drive circuit. The noninvasive blood oxygen saturation detector is stable in structure, small in power consumption and low in cost and provides continuous and effective monitoring information for clinical measurements, thereby being wide in application prospect.

Description

technical field [0001] The invention relates to the technical field of modern electronic technology medical equipment, in particular to a non-invasive blood oxygen saturation detector. Background technique [0002] Oxygen is the basis for maintaining the normal function and life activities of human tissue cells. The energy conversion of most tissue cells in the human body is completed with the participation of oxygen. Therefore, real-time monitoring of the oxygen metabolism and transport process in human tissues can indirectly obtain the metabolic state of cells, which is of great significance in the field of life science research. To understand the metabolism and transport process of oxygen in human tissues, that is, to grasp the blood oxygen transport metabolism in arteries, people usually adopt two effective and practical methods. The first method: direct collection of human arterial blood samples for blood gas analysis. It includes blood pH, PO 2 , PCO 2 The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1455
CPCA61B5/14551
Inventor 宫俊峰
Owner 宫俊峰
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