SU1598966A1 - Sound cardiomonitor - Google Patents

Abstract

The invention relates to medical technology and allows for the operational control of treatment efficacy during training and adaptive biocontrol. The sonic cardiac monitor contains electrodes 1, preamplifier 2, filter 3, amplifier 4, nonlinear converter 5, adder 6, comparator 7, converter 8 voltage - frequency, amplitude modulator 9, amplifier 10, telephone 11, keys 12 and 13, rectifier 14 and 15 and phase inverter 16. The heart monitor reproduces the electrocardiogram in the form of a frequency and amplitude modulated sound signal, while when the electrocardiogram passes through zero, the frequency of the sound changes abruptly, and the frequency depends on the amplitude of the electrocardiogram ala is exponential. 2 Il.

Description

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The invention relates to medical technology and can be used for the examination and observation of patients with unhealthy heart diseases.

The purpose of the invention is to provide operative control of the effectiveness of treatment during training, as well as in adaptive biocontrol.

FIG. 1 shows a block diagram of the proposed device; in fig. 2 - the transfer function of the nonlinear device is represented.

The cardiomonitor contains electrodes 1 mounted on the patient's skin, preamplifier 2, band-pass filter 3, second amplifier 4, non-linear converter 5, adder 6, comparator 7, voltage-frequency converter 8, amplitude modulator 9 with two controllers. the inputs are the third amplifier and the telephone 11. In addition, there are keys 12 and 13, one half-period rectifiers 14 and 15, and a phase inverter 16.

The device works as follows.

The electrocardiogram (ECS), removed from the electrodes 1, is fitted by preamplifier amplifier 2, the band-pass filter 3 passes the required frequency range and suppresses interference, and amplifier 4 amplifies the signal to the level necessary for further signal processing. The nonlinear converter-5 has an amplitude characteristic close to exponential (anti-logarithmic) and is used to compensate for the logarithmic dependence of the subjective perception of the sound frequency of the human ear on the sound frequency. A signal from the output of the nonlinear converter 5 is fed to the adder 6. The converter 8 of the voltage per clock generates a low (sound) frequency oscillation, which is proportional to the output voltage of the adder 6.

Comparator 7 serves to jump the frequency of the converter 8. When the polarity of the signal changes from negative to positive, a positive potential is supplied to the comparator 7 and the comparator is thrown into one state. The positive voltage from the comparator 7 is fed through the adder 6 to the input of the voltage-frequency converter 8, which increases its frequency abruptly by a certain amount. When the EC polarity is reversed, the comparator is moved to the zero state and the signal at its output disappears. Meanwhile, the converter 8 returns abruptly to its previous position. The signal from the converter 8 is subjected to amplitude modulation in the modulator 9, and then it enters the terminal amplifier 10 and the telephone 11.

For amplitude modulation, the signal from amplifier 4 is used. When the first switch 12 is closed, the signal enters the rectifier 14, where the negative part of the signal is cut off, and the positive control goes to the first control input of the amplitude modulator 9. At the same time, the EX potentials are heard in the telephone . When the key 13 is closed, the signal goes through phase inverter 16 to the rectifier 15 where the negative part of the signal is cut off, and the positive is fed to the second control input of the amplitude modulator 9. At the same time, the negative potentials of the ECS are heard. When both keys 12 and 13 are closed, both signals go to the modulator 9. At this, the positive potentials are heard on the telephone at higher frequencies, and the negative ones - at lower frequencies.

The effectiveness of the proposed device is based on the fact that when listening to an electrocardiogram at the time of changing the polarity of the signal, an abrupt change in the frequency of the sound occurs, and the logarithmic dependence of the sensitivity of the human ear to the sound of different frequencies is compensated, which makes it easier to determine the signs of the ECS. Due to this, the device can be used by a wider contingent of doctors and patients. In this case, the doctor can cooperate with the patient in the course of treatment, which allows raising the quality of treatment to a higher level. The use of the device by patients allows one to regulate his lifestyle and dose various types of loads, using these loads to train the adaptive abilities of the organism. Form u laiz gain

An audio heart monitor that contains series-connected electrodes, a preamplifier, (} liter, a second amplifier, a phase inverter, a series-connected voltage-to-frequency converter, an amplitude modulator, a third amplifier, and a telephone, as well as the first and second single-phase rectifiers, inputs, which are connected via the first and second keys respectively to the outputs of the second amplifier and phase inverter, respectively, and the outputs to the second and third inputs of the amplitude modulator, characterized in that Lew security opera

control of the effectiveness of treatment during trainings, as well as adaptive bioapplication, a serially connected nonlinear converter and adder, as well as a comparator are inserted into it, and the input of the nonlinear converter and the input of the comparator are connected to the output of the second amplifier, the second input of the comparator is connected to the common bus, and the output is connected to the second input of the adder, the output of which is connected to the input of the voltage converter - Frequency,

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Claims (1)

Claim An audio cardiomonitor containing serially connected electronic control of the effectiveness of the trodes, a pre-amplifier, a filter, a second amplifier, a phase inverter, a series-connected voltage-frequency converter, an amplitude modulator, a third amplifier and a telephone, as well as the first and second half-wave rectifiers, the inputs of which are connected through the first and second keys, respectively, with the outputs of the second amplifier and phase inverter, respectively, and the outputs with the second and third inputs of the amplitude modulus RA, characterized in that, in order to ensure opera treatment during training, as well as with adaptive biocontrol, series-connected non-linear transducer and adder are introduced into it. and a comparator, and the input of the nonlinear converter and the first input of the comparator are connected to the output of the second amplifier, the second input of the comparator is connected to the common bus, and the output is to the second input of the adder, the output of which is connected to the converter input voltage “Frequency, FIG. 2