RU16068U1 - DEVICE FOR ANALYSIS OF CARDIO SIGNALS - Google Patents

Description

DEVICE FOR ANALYSIS OF CARDIO SIGNALS

The device relates to Internet telemedicine, and can also be used in home automated systems for monitoring and diagnosing the state of the cardiovascular system.

Known cardiometric prefix to a personal computer Timoshenko D.A., Timoshenko D.D. Cardiointervalometric prefix to a personal computer // Medical equipment.-1999.-No. 4.-S.15-16. The main disadvantage of this device is its limited capabilities, since the analysis of electrocardiosignals (EX) is reduced only to the study of heart rate.

Known autonomous heart rate recorder Balashov Y., Kozmin V., Perepelitsa N. et al. Autonomous heart rate recorder // Modern automation technology.-1998.№2.-P.74-76 .. This device has electrodes, cardiac amplifier , An ADC converter, micro-computer and is capable of detecting R-waves of electrocardiosignals (EX) and measure periods of heart contractions. The microcomputer is paired with a personal computer via a serial port. The main disadvantage of the device is its narrow functionality (only heartbeat periods are analyzed).

Of the known devices closest to the claimed utility model is a system for transmitting electrocardiograms by phone ZhukovMKI: A6IB 5/04, 5/117

Ekni V.D. Medical electronic systems. - M .: Medicine, 1988 .. The device consists of electrodes, an electrocardiograph, a matching device, an amplitude modulator, a carrier frequency generator and a resonant amplifier, the output of which is connected through a matching stage to a telephone line. The main disadvantage of the device is its large; cost, which makes it inaccessible to the individual user. In addition, this device is aimed at cardiological specialists, and it cannot be used in the absence of a doctor, as well as without telephone communication with the center.

The objective of the utility model is to increase the responsiveness and accessibility of the services of medical diagnostics, ensuring the possibility of free choice of consulting doctors or diagnostic software, as well as protecting private information.

The task is achieved in that the device for the analysis of cardiac signals uses standard equipment in the form of a computer sound card, the computer itself, which has Internet access, through a public switched telephone network. Moreover, the specialized non-standard part of the device is minimal and includes electrodes, an amplifier, a modulator, a carrier frequency generator, a galvanic isolation element, and the electrodes are connected to the amplifier inputs, the amplifier output is connected to the modulator input, the output of the carrier frequency generator is connected to the second modulator input, the output the modulator is connected to the analog input of the computer sound card through a galvanic isolation element.

The figure 1 shows a device for analyzing cardiac signals, where the electrodes are 1, the amplifier is 2, the modulator is 3, the carrier frequency generator is 4, the galvanic isolation element is 5, the sound card of the computer is b, and the computer is.

The constituent elements of the proposed utility model are connected between

as follows: electrodes - 1 are connected to the inputs of the amplifier - 2, the output of the amplifier - 2 is connected to the control input of the modulator -3, the output of the carrier frequency generator - 4 is connected to the second input of the modulator 3, the output of the modulator -3 through the galvanic isolation element -5 is connected with the analog input of the sound card -b connected to computer -7, computer -7 is connected to the Internet through a public switched telephone network.

The proposed utility model works as follows: electrodes -1 are connected to standard points on the surface of the patient’s body. At the same time, an electrocardiogram appears on the electrodes-1. This signal is amplified by the amplifier -2 and fed to the input of the modulator -3. Modulator -3 transfers the spectrum of the ECS to the region of higher (sound) frequencies, performing one of the types of modulation (amplitude, frequency, and phase phn) using the signal of the carrier frequency generator -4. From the output of the modulator - 3, the high-frequency modulated cardiac signal is fed through the galvanic isolation element -5 to the linear analog input of the sound card-b of computer-7, The galvanic isolation element -5 provides isolation of the patient from the computer circuits- in accordance with the requirements of electrical safety standards .. Power supply of the amplifier 2, a modulator-3, a carrier generator-4 is carried out from an autonomous source of lithium (battery).

The sound card -6 of the computer -7 performs the AD conversion of the modulated EX, computer -7, software restores (modulates) the cardiac signal and analyzes it (detects informative elements, measures the time and amplitude parameters, calculates its characteristics, calculates pathology facts, documents, displays, etc.), and also, if necessary, sends the EX by e-mail or in the direct connection mode transfers it for analysis to a special site (for a more detailed study).

In case of biometric auto-identification of a person, the cardiac signal pick-up points are kept secret by the user. After inputting an electric card signal into the computer, an authentication program is launched, executed with

taking into account information security requirements.

In authentication mode, the proposed device for the analysis of cardbooks allows you to restrict access to a personal computer and keep secret private information.

In the diagnostic and control mode, the proposed device allows you to quickly monitor changes in the state of the cardiovascular system, reduces unreasonable ambulance calls, raises the reliability of the results by documenting short pain states of the user. In addition, the device allows the user to freely choose the diagnostic software and consulting doctors around the world, connecting to the sites of various university and diagnostic centers. The device remains operational (continues to perform its functions with the help of software installed on a personal computer) even in the absence of a telephone connection.

In authentication mode, the device provides effective restriction of access to confidential (private) information.

Due to the low cost of the non-standard part of the device and the distribution of tenderness of its standard elements (computers with sound cards), the proposed device becomes publicly available. The purchase of a non-standard part of the device allows computer owners to quickly track changes in the state of their cardiovascular system using freely distributed software. If a dangerous condition is detected, the computer user has the opportunity to remotely seek advice from cardiologists, for example, on duty on the university’s website, or other specialists who have an email address. There is an opportunity to document ECS for subsequent automatic nln expert analysis.In case of a temporary telephone line malfunction, the proposed device remains operational and uses its own program with a truncated knowledge base, rewritten earlier from the university website or put on a computer from a diskette attached to the specialized part of the device, for cardiac signal analysis.

Taking advantage of the fact that the electrocardiogram is individual even when removed from standard electrode connection points, the user can use EKS for his biometric authentication and restrict access to his computer.

Claims (1)

A device for analyzing cardiac signals, containing electrodes connected to the input of the amplifier, the output of the amplifier is connected to the input of the modulator, the output of the carrier frequency generator is connected to the second input of the modulator, characterized in that the output of the modulator is connected to the analog input of the computer's sound card through an galvanic isolation element.