Device for monitoring blood oxygen saturation under motion state

Abstract

The invention relates to a device for monitoring the blood oxygen saturation under a motion state. The device comprises a PPG signal generating module, a motion signal generating module, a signal processing module, a communication module and a man-machine interaction module, wherein the PPG signal generating module is connected with the signal processing module to transmit PPG signals under red light and infrared light; the motion signal generating module is connected with the signal processing module to transmit the acceleration of the human tissue in the three spatial mutual-perpendicular directions; the communication module is connected with the signal processing module to transmit a blood oxygen signal and heart rate information; the man-machine interaction module is connected with the signal processing module to transmit a control signal and display result information. Based on an output signal of a motion monitoring sensor, motion noise is eliminated, monitoring of the blood oxygen saturation under the motion state is achieved, and the device has the advantages of being small in size and low in weight.

Description

technical field [0001] The invention relates to a device in the technical field of medical instruments, in particular to a device for monitoring blood oxygen saturation in an exercise state. Background technique [0002] The oxygen needed by human metabolism is transported to different tissue cells by combining with hemoglobin (Hb) in the blood to form oxyhemoglobin (HbO2). Blood oxygen saturation (SaO2) indicates the percentage of oxygen-bound oxyhemoglobin (HbO2) in the blood to the total hemoglobin (Hb) that can be combined, that is, the concentration of blood oxygen in the blood. Therefore, monitoring SaO2 plays an important role in understanding the condition of the respiratory system and circulatory system and preventing tissue hypoxia. [0003] At present, the existing blood oxygen monitoring devices are all based on the Lambert-beer principle and photoelectric technology. First, the photoplethysmography (PPG) under red light and infrared light is obtained through ph...

AI Technical Summary

Problems solved by technology

However, this technology does not include a device to monitor the subject's motion state. It relies on a large number of calculations to remove motion noise without knowing the subject's actual motion signal. Therefore, the calculation of the device is too large, and it is only effective for some signals with obvious characteristics.

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