RU107467U1 - ECG AND REGISTRATION DEVICE BASED ON MOBILE COMMUNICATION DEVICE - Google Patents

Abstract

1. A device for recording ECG and rheogram based on a mobile communication device, including two ECG electrodes, an amplifier, a controller, two additional electrodes, non-volatile memory and a generator connected to additional electrodes, characterized in that the device additionally contains an analog signal input port, a port analog signal output port, modem, display, sound emitter and battery, wherein the analog signal input port, analog signal output port, controller, non-volatile memory, modem, display, sound emitter and battery are part of the mobile communication device. ! 2. The device according to claim 1, characterized in that the ECG electrodes and additional electrodes are parts of the body of the device, made of a material with high electrical conductivity - metal, conductive plastic, in the form of metal spraying, including spraying on the display or on buttons. ! 3. The device according to claim 1, characterized in that the mobile communication device is made in the form of a cell phone, smartphone, communicator, trunk or satellite communication terminal, which has the ability to download a user application.

Description

The utility model relates to medicine, namely to measurements for diagnostic purposes in cardiography, and can be used for outpatient diagnosis of the condition of the heart and blood vessels directly by the patient and further transfer of data to the cardiotelemetry center for detailed analysis.

Known small-sized electrocardiographs that register an electrocardiogram (ECG) at 1 ... 3 leads [1, 2] with the results displayed on the integrated display. Such devices are small and have electrodes integrated into the housing. ECG registration is done manually by applying electrodes of the device to the ECG leads.

The advantages of such devices are the absence of a patient cable and a corresponding reduction in induced interference.

The disadvantage of such devices is the lack of the ability to transmit information to the center of cardiotelemetry. In addition, in these devices there is no possibility of making a rheogram.

Known card pagers that record several ECG leads with further data transfer to the cardiotelemetry center via the audio channel of any telephone [3]. The disadvantage of such devices is the lack of rapid ECG analysis tools (display, arrhythmia indicators, etc.). In addition, such devices also do not have the ability to register rheograms.

It is known that the simultaneous registration of ECG and rheogram significantly increases the information content of the functioning of the heart and increases the reliability of diagnosis.

Closest to the claimed utility model is a device [4] for synchronous recording of rheograms from ECG electrodes and monitoring (prototype). The rheogram in the known device is recorded on ECG electrodes by detecting a high-frequency signal amplitude-modulated by fluctuations in blood conductivity in the area between the electrodes, which corresponds to fluctuations in blood pressure. An electrocardiogram is recorded by isolating from an input signal taken from the same ECG electrodes using band-pass filtering. In the known device, a generator that generates a high-frequency signal and is connected to additional electrodes is frequency tunable for examining patients of different constitution.

A disadvantage of the known device is the lack of the ability to transmit information to the center of cardiotelemetry, as well as the lack of means of operational analysis of information.

The task of creating a utility model is to expand the functionality of the device for recording ECG and rheogram through the use of a mobile communication device with the aim of transmitting information to the cardiotelemetry center and operational analysis of the recorded information to identify dangerous human health conditions, as well as simplifying the device circuit.

This object is achieved in that the device for recording ECG and rheograms based on a mobile communication device, including two ECG electrodes, an amplifier, a controller, two additional electrodes, non-volatile memory and a generator connected to additional electrodes, according to the claimed technical solution, the device further comprises a port analog signal input port, analog signal output port, modem, display, sound emitter and battery, and the analog signal input port, analog signal output port and, a controller, a nonvolatile memory, a modem, a display, a sound emitter and a battery included in the mobile communication device.

ECG electrodes and additional electrodes can be parts of the device’s body made of a material with high electrical conductivity, for example, metal, conductive plastic, in the form of metal spraying, including spraying onto a display (touch screen) or buttons.

A mobile communication device may be a cell phone, a smartphone, a communicator, a trunk or satellite communication terminal, etc., having the ability to download a user application.

The essence of the utility model is illustrated by the functional diagram of the device shown in figure 1.

The device contains: ECG electrodes El.1, El.2, amplifier 1, additional electrodes El.3 and El.4, generator 2, analog signal input port 3, controller 4, analog signal output port 5, non-volatile memory 6, display 7 , modem 8, sound emitter 9 and battery 10.

An analog signal input port 3, a controller 4, an analog signal output port 5, non-volatile memory 6, a display 7, a modem 8, a sound emitter 9, and a battery 10 are known standard components of a mobile communication device (UMC) 11.

The simplification of the prototype circuit is achieved due to the fact that the functions of the individual nodes of the prototype are performed by the standard nodes of the mobile communication device:

- the input port of the analog signal 3 (for example, a microphone input) performs the function of an analog-to-digital converter of the prototype;

- the output port of the analog signal 5 (for example, output to the speaker) performs the function of controlling the generator;

- display 7 performs the function of a recording indicator of the prototype;

- the functions of the bandpass filters and the prototype detector are performed by specialized software (user application) performed by the controller 4.

The ECG recording channel of the device is formed by electrodes El.1, El.2 connected to the input of amplifier 1, the output of which is connected to the input port of analog signal 3 connected to controller 4. The ECG signal is allocated from a wide range of pickups, which include the generator signal 2 using a filtering program executed by the controller 4.

The rheogram recording channel includes a generator 2 connected to additional electrodes El.3 and El.4, ECG electrodes El.1 and El.2 connected to the input of amplifier 1, the output of which is connected to the input port of analog signal 3 connected to controller 4. The output frequency of the generator 2 changes when the voltage at the output of the output port of the analog signal 5 changes under the control of the controller 4 and is set depending on the patient’s constitution. The selection of the low-frequency envelope of the high-frequency signal, carrying information about changes in blood flow - the rheogram signal, occurs using the detection and filtering program performed by the controller 4.

Non-volatile memory 6 is used to store measurement results, as well as to store user applications. Display 7 is used to display recorded information in graphical form and to display service information, including information analysis parameters - a signal of a dangerous state, heart rate, etc. The sound emitter 9 serves to alert a person with sound about a dangerous condition. Modem 8 is used to transmit measured and accumulated information to the center of cardiotelemetry. The battery 10 serves to power all nodes of the mobile communication device 11, as well as an amplifier 1 and a generator 2.

As conditionally shown in black in figure 1, a pair of electrodes El.1, El.3 can be placed side by side on the side of the UMS 11, a pair of El.2, El.4 - next to the bottom of the UMS 11.

The device operates as follows. Previously, the user application for processing the ECG and rheogram is loaded into the device in a known manner. Before starting any measurement by choosing from the menu, this application starts. The process of recording the ECG and rheogram is displayed on display 7 by the command of controller 4.

To measure the I ECG lead (LR) and rheogram of the chest, a person takes the device in his right hand so that the palm tightly covers the side end of the device (electrodes El. 1, El. 3), and touches the bottom end of the device (electrodes El. 2, El. 4) to the standard lead point L [5] - to the palm of the left hand.

To measure the II ECG lead (F-R) and the corresponding rheogram, a person also takes the device in his right hand and touches the point of the standard lead F [5] with the lower end of the device - to the ankle of the left leg.

To measure the III ECG lead (F-L) and the corresponding rheogram, a person takes the device in his left hand and touches the lower end of the device to the point of standard lead F [5] - to the ankle of the left leg.

The biopotential that occurs on the ECG electrodes El. 1 and El. 2 during the measurement is fed to amplifier 1 and then to the input port of analog signal 3, where it is converted to digital form and processed by controller 4.

The high-frequency signal generated by generator 2 is fed to additional electrodes El.3 and El.4, while a voltage drop modulated by fluctuations in blood conduction is generated on the electrodes of electrodes El.1 and El.2 - a rheogram signal. This signal is fed to amplifier 1, then to the input port of analog signal 3, where it is converted to digital form and processed by controller 4.

During the measurement, controller 4 performs the extraction of ECG signals and rheograms, writes data to non-volatile memory 6, displays the ECG and rheograms in graphical form on display 7, and also analyzes information to detect conditions dangerous to human health (arrhythmias, etc. ) When such a condition is detected, a person is notified of this by an audio signal using the sound emitter 9 and an indication on the display 7.

The recorded data is a file stored in non-volatile memory 6. In the future, a person can transfer this file using modem 8 using any known method of data transfer corresponding to the type of mobile communication device (for example, via GSM-fax, GPRS, EDGE, CDMA, TETRA etc.).

The industrial feasibility of the proposed utility model is justified by the fact that it uses well-known standard nodes of a mobile communication device for its intended purpose.

The positive effect in the proposed utility model is based on a circuit solution that allows a mobile communication device to record ECG and rheograms, analyze information to identify conditions dangerous to human health with immediate notification to the patient, and transfer data to the cardiotelemetry center.

Information sources

1. Handheld ECG monitor FP180. http://www.favoriteplus.com/easy-ecg-handheld-monitor-fp180.php.

2. Handheld ECG monitor FP-RMH. http://www.favoriteplus.com/readmyheart-handheld-ecg-ekg-monitor-fp-rmh.php.

3. Portable electrocardiograph "Cardiojet". http://telmed.ru/index.php?id=2.

4. Device for synchronous recording of rheograms from ECG electrodes and monitoring. Patent for utility model RU 93248 U1 IPC АВВ 5/0432.

5. Starshov A.M., Smirnov I.V. ECG for professionals. Methods and techniques of electrocardiographic research. - M .: The cognitive book plus, 2002. - p.16.

Claims (3)

1. The device for recording ECG and rheograms based on a mobile communication device, including two ECG electrodes, an amplifier, a controller, two additional electrodes, non-volatile memory and a generator connected to additional electrodes, characterized in that the device further comprises an analog signal input port, a port analog signal output, modem, display, sound emitter and battery, the analog signal input port, analog signal output port, controller, non-volatile memory, modem, display, sound A radiator and a battery are included in the mobile communication device. 2. The device according to claim 1, characterized in that the ECG electrodes and additional electrodes are parts of the housing of the device made of a material with high electrical conductivity - metal, conductive plastic, in the form of metal spraying, including in the form of spraying onto a display or buttons. 3. The device according to claim 1, characterized in that the mobile communication device is made in the form of a cell phone, smartphone, communicator, trunk or satellite communication terminal, with the ability to download user applications.