CN-121971050-A - Wireless remote ICU monitoring device with multiple physiological parameter acquisition functions

CN121971050ACN 121971050 ACN121971050 ACN 121971050ACN-121971050-A

Abstract

The invention provides a wireless remote ICU monitoring device with a multi-physiological parameter acquisition function, which comprises a hardware layer, an interaction layer and an intelligent processing layer, wherein the hardware layer comprises a main control circuit module for integrating a microprocessor and dual-mode communication, a multi-channel signal monitoring module and a power management module adopting a hierarchical partition power supply strategy, the interaction layer comprises a touch sensing interface module, an expansibility connection port module, a camera module, a periodic health monitoring key and a portable power control switch, and the intelligent processing layer comprises a system control module and a signal processing module for integrating a multi-mode data fusion algorithm. According to the scheme, accurate acquisition and intelligent early warning of medical-grade physiological parameters are realized through hardware collaborative design, long-time continuous monitoring is ensured by adopting a low-power-consumption architecture, remote real-time video consultation is supported, and monitoring efficiency and quality of critical patients are remarkably improved.

Inventors

Aziguri Ulamu
ZHU XI
LIU XIN
HAN YU

Assignees

北京科技大学
北京大学第三医院

Dates

Publication Date: 20260505
Application Date: 20260112

Claims (10)

1. A wireless remote ICU monitoring device having multiple physiological parameter acquisition functions, comprising: The main control circuit module is used for executing a system control instruction, coordinating the time sequence of each signal acquisition channel of the physiological signal monitoring module, carrying out preliminary processing and packaging on the acquired original physiological data, and uploading the data to a remote data center through a wireless network; The physiological signal monitoring module is electrically connected with the main control circuit module, and acquires an ECG signal, an SpO2 signal, a BP blood pressure signal, a PR pulse rate signal and a TEMP body temperature signal through a plurality of signal acquisition channels, wherein each signal acquisition channel comprises a preamplifier, a filter circuit and an analog-to-digital converter and is used for converting an analog physiological signal into a high-precision digital signal; The power management circuit is connected with the main control circuit module and is used for providing power supply for the whole device and performing a real-time electric quantity monitoring function; the touch sensing interface module is connected with the main control circuit module and is used for realizing the fine adjustment of display parameters, the display of parameters and the check of equipment states through touch operation; the expansibility connection port module is connected with the main control circuit module and comprises an HDMI interface unit and a USB interface unit, and is used for data transmission and connection between the device and external equipment; The camera module is connected with the main control circuit module and is arranged on the omnibearing rotary monitoring bracket, and supports the functions of high-definition remote monitoring and video communication so as to realize real-time visual monitoring of the condition of a patient; The system control module is realized by the MCU of the main control circuit module, and the module creates and manages four core task threads of data acquisition, data processing, man-machine interaction and wireless communication; The multi-mode data processing module processes the original digital signals converted by the physiological signal monitoring module, namely sequentially carries out high-pass filtering and notch filtering on the ECG signals to eliminate baseline drift and power frequency interference, and then calculates the instantaneous heart rate by adopting real-time QRS wave detection; extracting an oscillatory wave envelope curve from an NIBP signal to obtain average pressure, and then calculating systolic pressure and diastolic pressure according to an empirical relationship, finally, correlating the calculated physiological parameter with video frame data of a timestamp to form a multi-mode health data packet with a time sequence mark, and comparing the multi-mode health data packet with a safety threshold value and carrying out trend analysis to realize grading early warning; The periodic health monitoring key is connected with the main control circuit module and is used for receiving a user instruction, setting a monitoring period and starting an automatic monitoring flow of the device; and the portable power control switch is connected with the power management circuit and is used for switching on or off the device at any time.
2. The apparatus of claim 1, wherein the master control circuit module comprises an MCU unit, a wireless communication unit and a RAM storage unit, wherein the wireless communication unit supports WiFi and Bluetooth dual mode communication protocols and integrates a TCP/IP protocol stack; The main control circuit module is communicated with the physiological signal monitoring circuit through a high-speed SPI bus, and realizes the efficient transfer of acquired data in a DMA mode, thereby reducing the MCU load to the maximum extent; And a decoupling capacitor circuit is arranged beside the RAM storage unit and consists of 7 capacitors with equal size which are arranged in parallel, one end of each capacitor is connected with standard voltage, and the other end of each capacitor is grounded.
3. The apparatus of claim 1, wherein the physiological signal monitoring circuit comprises an ECG signal acquisition channel, an SpO2 signal acquisition channel, a BP blood pressure measurement channel, a PR pulse rate acquisition channel, and a TEMP body temperature acquisition channel; The ECG signal acquisition channel adopts a differential input mode, the front-stage instrument amplifier has a common-mode rejection ratio not lower than 100dB, a right leg driving feedback circuit is integrated to further inhibit common-mode interference, the SpO2 signal acquisition channel integrates light emitting diodes with wavelengths of 660nm and 940nm and matched photodiodes, is connected with a special blood oxygen analog front-end chip to acquire SpO2 signals, the BP blood pressure measurement channel is used for measuring BP blood pressure signals, the PR pulse rate signal acquisition channel and the SpO2 signal acquisition channel share an analog front end and ADC (analog to digital converter), and the TEMP body temperature measurement channel directly converts the measured body temperature signals through the ADC converter and then inputs the converted body temperature signals into the MCU unit.
4. The apparatus of claim 1, wherein the power management circuit employs a hierarchical zoned power supply strategy using an ultra-low noise low dropout linear regulator to power an analog front end in the physiological signal monitoring circuit; providing a direct-current voltage-stabilizing power supply for other digital logic circuits in the main control circuit module and the device by using a synchronous buck switch voltage stabilizer; The power supply management circuit comprises a battery charge and discharge management chip for supporting quick charge and has the functions of overcharge, overdischarge, overcurrent and short-circuit protection; the real-time electric quantity monitoring function of the power management circuit is realized through a coulomb meter chip of the I2C interface.
5. The apparatus of claim 1, wherein the touch sensitive interface module dynamically displays real-time physiological parameters, historical data trend graphs, and device status information in a plurality of forms, and further provides a system configuration menu allowing a user to set security thresholds and alarm rules according to individual differences.
6. The apparatus of claim 1, wherein the expansion connection port module comprises an HDMI interface unit and a USB interface unit.
7. The device according to claim 1, wherein the periodic health monitoring key is configured to be used for starting or stopping single monitoring by short pressing and entering a periodic monitoring mode by long pressing, and in the periodic monitoring mode, a user can select a preset monitoring period or a custom period time through the touch sensing interface module, and the device can execute parameter collection and recording circularly according to the set period and provide an acousto-optic prompt after each monitoring is completed.
8. The apparatus of claim 1 wherein the portable power control switch is a self-locking switch having a splash-proof design and wherein the portable power control switch cooperates with the power management circuit to implement a soft-off function.
9. The apparatus of claim 1, wherein the system control module performs four core task threads of data acquisition, data processing, human-machine interaction, and wireless communication, wherein the data acquisition task has a highest priority for controlling ADC timing sampling, the data processing task also has a high priority for running ECG QRS detection, spO2 computation, the human-machine interaction task is set to medium priority for handling touch events and interface refresh, the wireless communication task is set to medium priority for managing Wi-Fi/BLE connections and data upload.
10. The device of claim 1, wherein the motion artifact correction is performed by a dynamic baseline calibration algorithm based on a three-axis accelerometer, the trend analysis is performed by a weighted moving average method based on a sliding window, short-term and long-term trends of the physiological parameter are calculated, and early warning prompts are triggered when the short-term trend and the long-term trend deviate significantly.

Description

Wireless remote ICU monitoring device with multiple physiological parameter acquisition functions Technical Field The invention relates to the technical field of medical engineering combination and computer aided diagnosis, the technical field of medical diagnosis equipment and the technical field of wireless communication, in particular to a wireless remote ICU monitoring device with a multi-physiological parameter acquisition function. Background In traditional medical monitoring, patients often need to receive continuous vital sign monitoring in a hospital or clinic. These monitoring devices tend to be bulky, inconvenient to use, and unable to implement remote real-time monitoring. The traditional method mainly relies on wired connection, limits the freedom of movement of the patient, and brings inconvenience to medical professionals. Furthermore, these devices are typically only capable of monitoring a single or a few physiological parameters and do not provide a comprehensive health monitoring solution. In response to the above problems, some patents have attempted to use wireless technology to improve the convenience and real-time of monitoring. Although patents or products have been in recent years attempting to address the problems of conventional monitoring devices, existing solutions still suffer from deficiencies in terms of interactivity, convenience and intuitiveness. Therefore, searching for a more visual and convenient way improves the user operation experience, and provides a more comprehensive and visual monitoring means for the remote medical professionals at the same time, which is a hotspot and difficulty in the research field of critical department and medical industry. Disclosure of Invention Aiming at the defects of the existing ICU monitoring equipment in the aspects of integration level, remote monitoring capability, intelligent analysis and energy efficiency management, the invention provides a wireless remote ICU monitoring device with a multi-physiological parameter acquisition function, and particularly provides the following technical scheme: The invention provides a wireless remote ICU monitoring device with a multi-physiological parameter acquisition function, which comprises: The main control circuit module is used for executing a system control instruction, coordinating the time sequence of each signal acquisition channel of the physiological signal monitoring module, carrying out preliminary processing and packaging on the acquired original physiological data, and uploading the data to a remote data center through a wireless network; The physiological signal monitoring module is electrically connected with the main control circuit module, and acquires an ECG signal, an SpO2 signal, a BP blood pressure signal, a PR pulse rate signal and a TEMP body temperature signal through a plurality of signal acquisition channels, wherein each signal acquisition channel comprises a preamplifier, a filter circuit and an analog-to-digital converter and is used for converting an analog physiological signal into a high-precision digital signal; The power management circuit is connected with the main control circuit module and is used for providing power supply for the whole device and performing a real-time electric quantity monitoring function; the touch sensing interface module is connected with the main control circuit module and is used for realizing the fine adjustment of display parameters, the display of parameters and the check of equipment states through touch operation; the expansibility connection port module is connected with the main control circuit module and comprises an HDMI interface unit and a USB interface unit, and is used for data transmission and connection between the device and external equipment; The camera module is connected with the main control circuit module and is arranged on the omnibearing rotary monitoring bracket, and supports the functions of high-definition remote monitoring and video communication so as to realize real-time visual monitoring of the condition of a patient; The system control module is realized by the MCU of the main control circuit module, and the module creates and manages four core task threads of data acquisition, data processing, man-machine interaction and wireless communication; The multi-mode data processing module processes the original digital signals converted by the physiological signal monitoring module, namely sequentially carries out high-pass filtering and notch filtering on the ECG signals to eliminate baseline drift and power frequency interference, and then calculates the instantaneous heart rate by adopting real-time QRS wave detection; extracting an oscillatory wave envelope curve from an NIBP signal to obtain average pressure, and then calculating systolic pressure and diastolic pressure according to an empirical relationship, finally, correlating the calculated physiological parameter with video frame data of a time