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Oxyhemoglobin saturation detection method and system

A detection system and saturation technology, applied in the field of medical devices, can solve the problem of low detection accuracy

Active Publication Date: 2011-01-05
SOLARIS MEDICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0036] One of the technical problems to be solved by the present invention is to provide a blood oxygen saturation detection method to solve the problem that the detection accuracy of the existing blood oxygen saturation detection method is not high

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  • Oxyhemoglobin saturation detection method and system
  • Oxyhemoglobin saturation detection method and system
  • Oxyhemoglobin saturation detection method and system

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Embodiment Construction

[0065] Such as figure 1 As shown, a blood oxygen saturation detection system provided by this embodiment includes: a probe, a differential amplifier circuit, AD sampling, a central processing unit, a power supply circuit, and a photoelectric drive circuit.

[0066] The central processing unit adopts an MCU (microprocessor) in this specific embodiment, and the MCU specifically includes: a data processing unit, a logic control unit, a data memory, a temporary memory, and a data interface.

[0067] The data processing unit is used for data processing such as data operations. The logic control unit is connected with the photoelectric drive circuit, and is used to output control signals and perform logic control on the photoelectric drive circuit. In fact, in this specific embodiment, the MCU controls each part of the blood oxygen saturation detection system through the logic control part, such as: timing control of probe light emission, drive current control, bias current control, bac...

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Abstract

The invention discloses an oxyhemoglobin saturation detection method and an oxyhemoglobin saturation detection system. The oxyhemoglobin saturation detection system comprises a preprocessing device, a standard model establishing device, an SSF processing device, a waveform characteristic judging device, a device for extracting waveforms of pulses one by one, a signal quality index calculating device, a device for calculating a distance between adjacent peaks of pulse signals, an R value calculating device, an R value Kalman filtering device and an oxyhemoglobin saturation calculating device. In the system adopting the oxyhemoglobin saturation detection method of the technical scheme, because sampled data close to the slope and maximum points of the waveforms of the pulses is selected as sample points for calculating the oxyhemoglobin saturation during calculation, the sample points better represent the oxygen content of blood in a human body, and calculation errors caused by noise interference when peak points / valley points serving as characteristic value points are extracted are avoided, so the noise interference can be effectively reduced, the signal-to-noise ratio of the oxyhemoglobin saturation is improved and the detection accuracy of the oxyhemoglobin saturation is improved.

Description

Technical field [0001] The present invention relates to the technical field of medical devices, in particular to blood oxygen saturation detection technology, in particular to a blood oxygen saturation detection method and system. Background technique [0002] Non-invasive blood oxygen saturation detection is based on the principle that the absorption of light by arterial blood varies with arterial fluctuations. In the transmission blood oxygen saturation test, when the arteries in the light-transmitting area pulse, the amount of light absorbed by the arterial blood will change accordingly, which is called the pulsation component or alternating current (AC); while the skin, muscle, bone and venous blood The absorption of light by other tissues is constant and is called direct current (DC). If you ignore the attenuation caused by factors such as scattering and reflection. According to Beer-Lambert Law (Beer-Lambert Law), we can know that [0003] I out = I in e ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1455
Inventor 杨晓波王干兵胡丽丹
Owner SOLARIS MEDICAL TECH
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