System for performing continuous monitoring of heart activity

FIELD: medical equipment.

SUBSTANCE: system intends for transmitting cardiologic signals along radio channels; it can be used in hospitals, clinics, for ambulance service and at consultation-diagnostic medical centers. System has equipment for serving patient and control board equipment. Patient serving equipment has electrodes, preamplifier, high frequency first generator, first amplitude modulator, modulating code generator, first phase manipulator, first power amplifier, first receiving-transmitting aerial, second heterodyne, second mixer, first intermediate frequency amplifier, first aerial switch, second power amplifier, third heterodyne, third mixer, second intermediate frequency amplifier, second amplitude limiter, second sync detector, registration unit, multiplier, band-pass filter and second phase detector. Control board equipment has microprocessor, comparison unit, lower and top level's memory units, adjusted threshold unit, alarm signal forming unit, magnet registrar, sound signal unit, second receiving-transmitting aerial, tuning unit, first mixer, second intermediate frequency amplifier, detector, delay line, switch, first amplitude limiter, first sync detector, second delay line, first phase detector, high frequency second generator, analog messages source, second phase manipulator, fourth heterodyne, fourth mixer, intermediate frequency amplifier, third and fourth power amplifiers, second aerial switch. Detector has spectrum width measuring unit, phase doubler, second comparison unit and first threshold unit. Radio channel is used in duplex (two-directional) mode when analog and discrete information is transmitted not only from patient to control board but from control board - to patient or to doctor treating the patient.

EFFECT: improved efficiency.

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The proposed system relates to the field of medical equipment, namely to design devices and systems for transmission of electrocardiogram radio, and can be used in practical health care, including in the system of the ambulance, in the system of distance counselling centres.

Known devices and systems for continuous monitoring heart activity and for diagnosing diseases of the heart (ed. mon. The USSR No. 1811380, 1814538; RF patents №№2128004, 2181258, 2089094, Frolov MV Control of the functional state of the human operator. M.: Nauka, 1987, p.40-42 and others).

Of the known devices and systems closest to the proposed system is a Device for continuous monitoring of the heart activity (patent RF №2181258, And 61 In 5/04, 2000), which is selected as a prototype.

The specified device provides remote obtain objective information about the state of the heart of a sick person in real conditions of social and industrial life. This remote control is carried out simultaneously with the heart activity of several patients, which use radio signals of different frequencies and modulation codes, which transmit in addition to kardiosignalas still and patient information.

However, this device uses the radio only in implexa (unidirectional) mode, i.e. cardioseal and the patient information transmitted from the patient only at the control point. There is no feedback, and the radio does not use its potential for transmission of analog and digital data from the control point to the patient or the doctor who is engaged in this patient. For example, the recommendations of the consultative-diagnostic center after a detailed analysis of the ECG of the patient received by radio.

An object of the invention is to expand the functional capabilities of the device by using the radio channel in full-duplex (bi-directional) mode when analog and digital information is transmitted not only from the patient to the control point, but also from the point of control - the patient or the doctor who is engaged in this patient.

The problem is solved in that the system for continuous monitoring of the heart activity, containing series-connected electrodes, pre-amplifier, the first amplitude modulator, a second input connected to the output of the first high-frequency generator, and the first phase arm, a second input connected to the output of the generator modulating code, the first power amplifier, the transmitting antenna and the receiving antenna, cascaded block adjustment, the control input which is connected to the output of the first threshold unit, which is the output of the detector, the first local oscillator, a first mixer and a first amplifier of the second intermediate frequency, cascaded detector, a second input which are combined inputs of measuring the width of the signal spectrum and doubler phase, which are connected in series meter width of the spectrum of the second harmonic and the second block of comparison, a second input connected to the meter output spectrum width of the signal, and the first threshold unit, the control input of which is through the first delay line coupled to the output of the detector, the key, a second input connected to the output of the first amplifier of the second intermediate frequency, a first amplitude limiter, the first synchronous detector, a second input which is connected to the output of the key, the microprocessor and block the formation of an alarm signal, the first and second outputs of which are connected respectively to the unit and audible alarm magnetic recorder, the output of the first amplitude limiter connected in series, the second delay line and the first phase detector, a second input connected to the output of the first amplitude limiter, and the output connected to the second input magnetic recorder, a third input connected to the output of the first synchronous detector, the microprocessor made in the form of p is pout Comparer, memory blocks of the lower and upper levels and adjustable threshold block whose output is the output of the microprocessor, the input of which is the input of the first unit of comparison, which are connected respectively to the memory blocks of the lower and upper levels and adjustable threshold unit comes with a second, third and fourth oscillators, second, third and fourth mixers, the second amplifier of the second intermediate frequency amplifier intermediate frequency amplifier of the first intermediate frequency, the second, third and fourth amplifiers, two antenna switches, the second amplitude limiter, a second synchronous detector, a recording unit, a multiplier, a bandpass filter, a second the phase detector, the second high-frequency generator, the second amplitude modulator, the second phase arm, a source of analog messages and source of discrete messages, and to the output of the first phase of the manipulator are connected in series, a second mixer, a second input connected to the output of the second local oscillator, the amplifier of the first intermediate frequency, a first amplifier, the first antenna switch, input-output of which is connected to the first receiving-transmitting antenna, the second amplifier, the third mixer, the second input is to connect the eh with the release of the third local oscillator, the second amplifier of the second intermediate frequency, the second amplitude limiter, a second synchronous detector, the second output of which is connected to the output of the second amplifier of the second intermediate frequency, and the registration unit, the output of the third local oscillator connected in series multiplier, a second input connected to the output of the second amplitude limiter, bandpass filter and the second phase detector, a second input connected to the output of the second local oscillator, and the output connected to the second input of the recording unit, to the output of the second high-frequency generator connected in series to the second amplitude modulator, a second input connected to the output of the analog source message, the second phase arm, the second an input connected to the output of a source of discrete messages, the fourth mixer, a second input connected to the output of the fourth local oscillator, intermediate frequency amplifier, a third amplifier, a second antenna switch, input-output of which is connected to the second receiving-transmitting antenna, and a fourth amplifier, the output of which is connected to a second input of the first mixer.

Block diagram of the apparatus for servicing of the patient are presented in figure 1. Block diagram of the hardware of the control system shown in figure 2. Structural diagram of the of neurites 22 shown in figure 3. Frequency chart illustrating the process of converting a signal frequency, depicted in figure 4. Timing diagrams explaining the operation of the system depicted in figure 5.

Equipment serving the patient, contains series-connected electrodes 1, a preamplifier 2, a first amplitude modulator 12, a second input connected to the output of the first generator 11 high frequency, the first phase arm 14, a second input connected to the output of the generator 13 modulating code, the second mixer 35, a second input connected to the output of the second local oscillator 34, amplifier 36, the first intermediate frequency, a first amplifier 15 power, the first antenna switch 37, the input-output of which is connected to the first receiving-transmitting antenna 16, a second amplifier 38 power, a third mixer 40, a second input connected to the output of the third local oscillator 39, the second amplifier 41 of the second intermediate frequency, the second amplitude limiter 42, the second synchronous detector 43, a second input connected to the output of the second amplifier 41 of the second intermediate frequency, and the block 44 of the Desk. The output of the third local oscillator 39 are connected in series multiplier 45, a second input connected to the output of the second amplitude limiter 42, the bandpass filter 46 and the second phase detector 47, the output to the showing connected with a second input unit 44 of the Desk.

The hardware control point contains a series-connected second generator 48 high frequency, the second amplitude modulator 50, a second input connected to the output of a source 49 of analog messages, the second phase arm 52, a second input connected to the output of a source 51 of discrete messages, the fourth mixer 54, a second input connected to the output of the fourth local oscillator 53, the amplifier 55 intermediate frequency, the third amplifier 56 power, a second antenna switch 57, the input-output of which is connected to the second receiving-transmitting antenna 17, the fourth amplifier 58 power, the first mixer 20, the second input is through the first the local oscillator 19 is connected to the output of block 18 of perestroika, the control input of which is connected to the output of the first threshold unit 33, which is the output of the detector 22, and the first amplifier 21 and the second intermediate frequency, cascaded detector 22, a second input which are combined inputs of the meter 29 spectrum width of the signal and doubler 30 phases, which are connected in series meter 31 spectrum width of the second harmonic and the second block 32 of comparison, a second input connected to the output of the meter 29 spectrum width of the signal, and the first threshold unit 33, a control input through which the first line 23 delay connected to the output of the Sabbath.the house of the detector 22, the key 24, a second input connected to the output of the amplifier 21 of the second intermediate frequency, a first amplitude limiter 25, the first synchronous detector 26, a second input connected to the output of the key 24, the microprocessor 3 and the block 8 of the formation of an alarm signal, the first and second outputs of which are connected respectively to the block 10 and audible alarm magnetic recorder 9. The output of the first amplitude limiter 25 serially connected second line 27 delay and the first phase detector 28, a second input connected to the output of the amplitude limiter 25, and the output connected to the second input magnetic Registrar 9, a third input connected to the output of the synchronous detector 26. Thus, the microprocessor 3 is made in the form of the first block 5 comparison of memory blocks of the bottom 4 and top 6 levels and adjustable threshold unit 7, the output of which is the output of the microprocessor 3, the entrance of which is the input of the first block of 5 comparisons, which are connected respectively to the memory blocks of the bottom 4 and top 6 levels and adjustable threshold unit 7.

As block 18 adjustment is used, as a rule, the sawtooth generator. Its purpose is to change the frequency of the local oscillator 19 is linear. In this case, the superheterodyne receiver is called Panor who set aside by the Russian receiver. In some cases, the sawtooth generator simultaneously performs the function generator sweep, forming a linear (horizontal) scan of the beam on the CRT screen (see, for example, V.A. Martynov, Selikhov SCI Panoramic receivers and spectrum analyzers. - M.: Owls. radio, 1980, p.21 Fig.18).

System for continuous monitoring of the heart activity is as follows.

The electrodes 1 are attached to the monitored person (athlete, driver, desktop, patients with various cardiovascular disorders and diseases, etc. in places removing ECG, which largely depends on the quality of the shooting electrocardiogram. While there is interference due to physiological reasons (artifacts), and interference associated with methodical moments.

Interference caused by physiological reasons, depend on the potentials of skeletal muscles and are generally considered to be the main factor hindering the registration of the currents of the heart during active muscle activity. To reduce these interference electrodes 1 must be connected in a bipolar chest leads. This is because the chest the amplitude of the ECG is the most important, and the pectoral muscles are not actively participating in the movement process. Among bipolar chest leads of the Sky, in which the three electrodes are as follows.

The first electrode is located right at the point of insertion of the FIRST rib to the breastbone. The second level of the fifth rib on the left srednerusskoi line. The third electrode at the level of the fourth rib in the mid-axillary line on the left. The system leads the Sky includes lead:

And between the first and second electrodes;

D - between the first and third electrodes;

I - between the second and third electrodes;

The advantage of these leads is that they to a certain extent reflect the potentials of the lateral and posterior walls of the heart.

Interference of the second group associated with methodical moments, basically more substantial and control plays a major role. These include interference of two kinds:

a) noise from the bias electrodes when the jolts and shocks that inevitably arise in dynamic conditions;

b) electrical noise and distortion, with sometimes quite complicated.

The displacement of the electrodes causes interference due to the fact that it is accompanied by short change of contact resistance between the electrodes and the skin. Interference of an electrical nature are diverse, and almost all of them Express the greater, the more the resistance value of the transitional contact between the electrodes and the skin.

To combat methodological noise and distortion should:

a) to stabilize led the rite of contact resistance;

b) to do this magnitude is not only constant, but possibly less.

The first is achieved either by the use of Cup electrodes, filled pasta and attached to the skin by leolam and additionally ribbons of adhesive tape, or the use of liquid electrodes - suckers. The latter provide greater reliability due to the fact that the attachment is combined method (bonding glue and suction), and furthermore, a liquid electrolyte is an absolute homogeneous contact medium, whose properties are not significantly changed by the intense sweating investigated.

The second is the reduction of contact resistance is achieved by a complex process Vodolazskiy P.A. Because of the high electrical resistance of the skin is due to the properties as of the stratum corneum of the epidermis by wiping abrasive paste (soap cream with it pumice in the ratio 4:1) and subsequent cleaning and degreasing the skin with a mixture Nikiforova (alcohol and ether in the ratio 1:1).

Recorded by electrodes 1 cardioseal m1(t) (figure 5, a), passing through the pre-amplifier 2, is fed to the first input of the amplitude modulator 12, the second input of which is applied a high-frequency oscillation output from the generator 11 high frequencies (figure 5, b)

Uc1(t)=VC1·Cos(W ·t+ϕc1), 0≤t≤Tc1,

where Vc1, Wwiththat ϕc1, Tc1- amplitude, carrier frequency, initial phase, and the duration of harmonic oscillations.

The output of the amplitude modulator 12 produces a signal with amplitude modulation (AM), (5,)

U2=V2·[1+m1(t)]·Cos(Wc·t+ϕc1), 0≤t≤Tc1,

where V2=1/2 K1·Vc1;

K1- the ratio of the amplitude modulator;

m1(t) - law amplitude modulation;

Signal with amplitude modulation U2(t) is fed to the input of the phase manipulator 14, to the second input of which receives the modulating code M1(t) (figure 5, g), where the digital code contains brief information about the monitored person, such as name, year of birth, etc. On the output of the phase manipulator 14 is formed a complex signal with a combined amplitude modulation and phase shift keying (AM-FMN) (figure 5, d)

U3(t)=V3·[1+m1(t)]·Cos[Wc·t+ϕk1(t)+ϕc1], 0≤t≤Tc1,

where V3=1/2K2·V2;

To2- transfer coefficient of the phase manipulator;

ϕK1(t)={0, π} - manipulated component phases, reflecting the law of phase manipulation in accordance with the modulating code M1(t) (figure 5, is), and ϕk1(t)=const for Kτe<t<(K+1) τe and may change abruptly at t=toτe, i.e. at the boundaries between elementary parcels (K=1, 2, ..., N-1);

τe, N is the duration and the number of basic assumptions which form the signal duration T1(T1=Nτe)

which is supplied to the first input of the mixer 35, the second input of which is applied the voltage of the local oscillator 34

UG1(t)=VG1·Cos(WG1·t+ϕG1).

At the output of mixer 35 is formed voltage Raman frequencies. The amplifier 36 is allocated to the first intermediate voltage (total) frequency (figure 5, e)

UPR1(t)=VPR1·[1+m1(t)]·Cos[WPR1·t+ϕk1(t)+ϕPR1], 0≤t≤Tc1,

where VPR1=1/2K3·V3·VG1;

To3the gain of the mixer;

WPR1=Wwith+WG1- first interim (total) frequency;

ϕPR1C1G1.

This voltage, after amplification in the amplifier 15 power through the antenna switch 37 is radiated in receiving and transmitting antenna 16 in the air at a frequency of W1=WPR1received in receiving and transmitting antenna through the antenna 17 and the switch 57 and the amplifier 58 power is supplied to the first input of the mixer 20. To the second input of the mixer 20 is supplied voltage is agenie lo 19 linearly varying frequency

UT2(t)=VG1·Cos(WG1·t+πγ·t2G1), 0≤t≤Tp,

where γ=Df/Tp- the rate of change of the frequency of the local oscillator 19 in a predetermined frequency range Df frequencies;

Tp- repetition period (the transition period).

At the output of mixer 20 are formed voltage Raman frequencies. The amplifier 21 is allocated to the second intermediate voltage (differential) frequency

UAC2(t)=VAC2·[1+m1(t)]·Cos[WAC2·t+ϕK1(t)-π·γ·t2AC2], 0≤t≤Tc1,

where VAC2=1/2K3·VPR1·VG1;

WAC2=WPR1-WG1=Wwiththe second intermediate (differential) frequency (figure 4);

ϕAC2PR1G1.

This voltage is a complex signal with a combination of amplitude modulation, phase shift keying and linear frequency modulation (AM-FMN-chirp). It is fed to the input of the detector 22, consisting of the first 29 and second 31 measures the width of the spectrum of the doubler phase 30, block 32 comparison and threshold unit 33.

At the output of the doubler phase 30 is formed voltage:

U4(t)=V4·[1+m1(t)]·Cos(2WAC2·t-2π·γ·t2+2ϕAC2), 0≤t≤Tc1,

in which phase manipulation is s already present.

Spectrum width Δf2the second harmonic signal is determined by the duration of TC1signal

Δf2=1/TC1,

while the spectral width Δfc of the received signal is determined by the duration of τeits basic packages

Δfwith=1/τe,

i.e. the spectral width Δf2the second harmonic signal is N times smaller than the width of the spectrum of the input signal

Δfwith/f2=N.

Therefore, by multiplying the phase of the AM-FMN-chirp signal on two of its range "collapsed" N times. This circumstance allows to detect AM-QPSK signal even when its power at the input of the device is less than the noise power and interference.

Spectrum width Δfwiththe input signal is measured using a meter 29, and spectrum width Δf2the second harmonic signal is measured using a meter 31. Voltage Vcand V2proportional Δfwithand Δf2accordingly, outputs of the probes 29 and 31 of the spectrum width is fed to two input block 32 comparison. Since Vc≫V2the output of block 32 comparison produces a positive pulse which is compared with the threshold voltage Vthenin the threshold block 33. The threshold voltage Vthenexceeded only upon detection of the complex S-QPSK signal. If exceeded, then the new tier V thenin the threshold block 33 is formed by a DC voltage is supplied to the control input unit 18 realignment, turning it in the stop mode, the input of delay line 23 and to the control input key 24, opening it. In the initial state, the key 24 is always closed.

From this point in time view of the specified frequency range Df and search for AM-QPSK signals terminated at the time of registration of the detected S-QPSK signal, which is determined by the delay time τ1delay line 23.

At the termination of the restructuring of the local oscillator 19 steering 21 of the second intermediate frequency is allocated voltage

UAC3(t)=VAC2·[1+m1(t)]·Cos[WAC2·t+ϕK1(t)+ϕAC2], 0≤t≤TC1,

which through public key 24 is fed to the input of the amplitude limiter 25 and the synchronous detector 26. The output of the amplitude limiter 25 is formed QPSK signal (figure 5, g)

U5(t)=V0·Cos[WAC2·t+ϕk1(t)+ϕAC2], 0≤t≤Tc1,

where V0the threshold limit,

which is supplied to the second input of the synchronous detector 26 and to the inputs of the delay line 27 and the phase detector 28. In the synchronous detection on the output of a synchronous detector 26 is formed of a low-frequency voltage (figure 5, C)

UH1(t)=VH1·[1+m (t)],

where Vh1=1/2K4·VAC2·V0;

K4- the transfer rate synchronous detector,

proportional to the source cardiomegaly m1(t). This voltage is fed to the input of block 5 comparison of the microprocessor 3, which compares the recorded signal of a specific patient with the set for a normal person the upper and lower limit values received at block 5 comparison with blocks 4 and 6 memory upper and lower levels. When the deviation of the recorded signal for the maximum permissible torque is triggered adjustable threshold unit 7, including the block 10 an audible indication and a magnetic recorder 9. Last writes for 5-10 seconds and registration of pathological process on the portable cartridge. The system is powered by a portable power source (not shown).

The delay line 27 and a phase detector 28 provides detection of QPSK signal U5(t) (figure 5, g) by the method of relative phase manipulation, which is free from the phenomenon of "reverse". Time delay τ2the delay line 27 is equal duration τeelementary parcels (τ2e) (figure 5,). In this case, the reference voltage for the subsequent elementary parcel service the t previous basic premise. The output of the delay line 27 is formed voltage (figure 5,)

U6(t)=V0·Cos[WAC2·(t-τ2)+ϕk1(t-τ2)+ϕAC2], 0≤t≤Tc2,

which comes to the second input of phase detector 28. The output of the last formed a low voltage (5 to)

UH2(t)=VH2·Cosϕk1(t);

where VH2=1/2K5·V02;

K5- gain of the phase detector,

proportional to the modulating code M1(t) (figure 5, g). This voltage is fixed magnetic Registrar 9.

Thus, the magnetic recorder 9 provides registration information about the patient and his pathological data on the cardiovascular system.

Time delay τ1line 23 of the delay is selected such that it was possible to record information about the patient and his pathological data on the cardiovascular system on magnetic tape, and analyze them in details. The results of the analysis and recommendations by radio transmitted to the patient or the doctor who is engaged in this patient.

For this generator 48 high frequency harmonic oscillation is formed

UC2(t)=VC2·Cos(Wc·t+ϕc2), 0≤t≤Tc2,

which arrives at the first input of the amplitude modulate the RA 50, to the second input of which is supplied analog information m2(t) from the output of the source 49 analog messages. The output of the amplitude modulator 50 is formed a signal with amplitude modulation (AM)

U7(t)=V7·[1+m2(t)]·Cos(Wc·t+ϕc2), 0≤t≤Tc2,

where V7=1/2K1·Vc2,

m2(t) - law amplitude modulation.

Signal with amplitude modulation U7(t) is fed to the input of the phase manipulator 52, to the second input of which receives the modulating code M2(t) from the output of the source 51 of discrete messages.

The modulating function m2(t) and M2(t) in analog and digital form contain information about the monitored patient, the diagnosis of the disease as a result of analysis of the patient's ECG, obtained remotely over the air, and recommendations for the treatment of cardiovascular pathologies.

The output of the phase manipulator 52 is formed complex S-QPSK-signal

U8(t)=V8·[1+m2(t)]·Cos(Wc·t+ϕK2(t)+ϕc2), 0≤t≤Tc2,

where V8=1/2K2·V7;

ϕK2(t)={0, π} - manipulated component phase

which is supplied to the first input of the mixer 54, to the second input of which is applied the voltage of the local oscillator 53

UG3(t)=VG3·Cos(WT2�B7; t+ϕT2),

Here, the frequencies WG1and WT2local oscillators are chosen as follows (figure 4):

WT2-WG1=WAC2, Wwith=WAC2, WG1=W2=WCR,

WT2=W1=WPR1.

At the output of mixer 54 is formed voltage Raman frequencies. The amplifier 55 is allocated to the intermediate voltage (differential) frequency

Up(t)=Vp·[1+m2(t)]·Cos[WCR·t-ϕK1(t)+ϕp], 0≤t≤Tc2,

where Vp=1/2K3·V8·VG3;

WCR=WT2-Wwith=W2- intermediate frequency;

ϕpc2T2.

This voltage, after amplification in the amplifier 56 power through the antenna switch 57 is emitted in receiving and transmitting antenna 17 at a frequency of W2in the air, trapped in receiving and transmitting antenna through the antenna 16 and the switch 37 and the amplifier 38 of the power supplied to the first input of the mixer 40. To the second input of the mixer 40 voltage UG3(t) local oscillator 39. At the output of the mixer 40 are formed voltage Raman frequencies. The amplifier 41 is allocated to the second intermediate voltage (differential) frequency

UWP5(t)=VWP5·[1+m2(t)]·Cos[WAC2·t+ϕk2(t)+ϕWP5], 0≤t≤Tc2,

V WP5=1/2K3·Vp·VG3;

WAC2=WPR1-WCR=WT2-WG1the second intermediate (differential) frequency;

ϕWP5pT2.

which is supplied to the information input of synchronous detector 43 and the input of the amplitude limiter 42. The output of the last formed FMN-signal

U9(t)=V0·Cos[WAC2·t+ϕK2(t)+ϕWP5], 0≤t≤Tc2,

where V0the threshold limit,

served on the reference input of synchronous detector 43. The output of the synchronous detector 43 is formed of a low-frequency voltage

UH3(t)=VH3·[1+m2(t)];

where VH3=1/2K4·VWP5·V0;

proportional to the modulating function m2(t). This voltage is fixed by the block 44 of the Desk.

The voltage U9(t) from the output of the amplitude limiter 42 is simultaneously supplied to the first input of the multiplier 45, the second input of which a voltage UG3(t) lo 39

UG3(t)=VG3·Cos[WT2·t+ϕT2).

The output of multiplier 45 is formed voltage

U10(t)=V10·Cos[WG1·t+ϕK2(t)+ϕG1], 0≤t≤Tc2,

where V10=1/2K6·V0·VG3;

To5- adjusted ient transfer multiplier;

WG1=WT2-WAC2;

ϕG1T2WP5;

which is a QPSK signal at a stable frequency of the local oscillator 34.

This tension is highlighted bandpass filter 46 and is supplied to the information input of the phase detector 47, the reference input voltage of the local oscillator 34

UG1(t)=VG1·Cos(WG1·t+ϕG1).

The output of the phase detector 47 is formed of a low-frequency voltage

UH4(t)=VH4·CosϕK2(t)

where VH4=1/2K5·V0·VG1;

proportional to the modulating code M2(t). This voltage is fixed by the block 44 of the Desk.

Time delay τ1delay line 23 is selected such that it was possible to record information about the patient and his pathological data on the cardiovascular system on the magnetic tape. After this time, the voltage output from the delay line 23 is fed to the reset input of the detector 22 (threshold block 33) and resets its contents to zero. The block 18 of the adjustment mode adjustment, and the switch 24 is closed, i.e. they must be in their original condition. From this point in time view of the specified frequency range Df and search for AM-QPSK signals continues.

If obnarujennogo AM-FMN-signal operation of the system occurs in a similar way.

Thus, the proposed system is compared with the reference device provides increased functionality of the radio channel. This is achieved through the use of the radio channel in full-duplex (bi-directional) mode in which analog and digital information is transmitted not only from the patient to the control point, but also from the point of control - the patient or the doctor, who deals with a patient. While the information from the patient at the point of control is at the frequency W1=WPR1=WG1and received at a frequency of W2=WCR=WT2and with the control point, the patient, on the contrary, is transmitted at a frequency of W2and received at a frequency of W1. These frequencies separated by the value of the second intermediate frequency

W1-W2=WT2-WG1=WPR1-WCR=WAC2.

For transmitting said information over the air using complex signals with a combined amplitude modulation and phase shift keying (AM-FMN), which have high energy and structural secrecy.

Energy reserve data signals due to their high compressibility in time or range under optimal processing, thereby reducing the instantaneous radiated power. As a consequence, used complex AM-QPSK signal at the point of reception which may be masked by noise and interference. And energy complex AM-QPSK signal is not small, it just spread across the time-frequency region so that at each point of this region is the signal power is less than the noise power and interference.

Structural secrecy of complex signals with a combined amplitude modulation and phase shift keying on a single carrier frequency due to the large variety of their forms and significant ranges of parameter changes, which complicates the optimal or at least quasi-optimal processing complex AM-QPSK signals priori unknown structure in order to increase the sensitivity of the receiver.

Complex AM-FMN-signals open new opportunities in technology transfer messages and protect them from unauthorized access. These signals allow you to apply a new type selection - structural selection. This means that there is a new opportunity to highlight the complex AM-QPSK signals other signals and noise, operating in the same frequency band and at the same time. This feature is implemented by a convolution of the spectrum of the complex S-QPSK signals.

System for continuous monitoring of the heart activity, containing series-connected electrodes, pre-amplifier, the first amplitude modulator, a second input connected to the output of the first generatorname frequency, and the first phase arm, a second input connected to the output of the generator modulating code, the first power amplifier, the transmitting antenna and the receiving antenna, cascaded block adjustment, the first local oscillator, a first mixer, the first amplifier of the second intermediate frequency and detector made by measuring the width of the spectrum, the doubler phase, the inputs of which are combined and the first input of the detector, and the outputs respectively connected to the second power comparing and measuring the spectrum of the second harmonic, the output of which is connected to the second input of the second block of comparison, the output of which is connected to the output of the first threshold unit whose output is the output of the detector that through the first delay line connected to the control input of the first threshold unit, the output of which is connected with the control input unit of perestroika and the first input key, a second input connected to the output of the first amplifier of the second intermediate frequency, and the output connected to the series-connected first amplitude limiter, the first synchronous detector, a second input connected to the output of the key, the microprocessor and block the formation of an alarm signal, the first and second outputs of which are connected respectively to the input sound signal and the first is the input magnetic Registrar the output of the first amplitude limiter connected to the input of the second delay line and the first input of the first phase detector, a second input connected to the output of the first amplitude limiter, and the output connected to the second input magnetic recorder, a third input connected to the output of the first synchronous detector, the microprocessor is made in the form of the first unit of comparison, the memory blocks of the lower and upper levels and adjustable threshold block whose output is the output of the microprocessor, the input of which is the input of the first unit of comparison, which are connected respectively to the memory blocks of the lower and upper levels and adjustable threshold unit, characterized in that it is fitted with the second, third and fourth oscillators, second, third and fourth mixers, the second amplifier of the second intermediate frequency amplifier intermediate frequency amplifier of the first intermediate frequency, the second, third and fourth amplifiers, two antenna switches, the second amplitude limiter, a second synchronous detector, a recording unit, a multiplier, a bandpass filter, a second phase detector, a second high-frequency generator, the second amplitude modulator, the second phase arm, a source of analog messages and East is cinecom discrete messages, and to the output of the first phase of the manipulator are connected in series, a second mixer, a second input connected to the output of the second local oscillator, the amplifier of the first intermediate frequency, a first amplifier, the first antenna switch, input-output of which is connected to the first receiving-transmitting antenna, a second amplifier, a third mixer, a second input connected to the output of the third local oscillator, a second amplifier of the second intermediate frequency, the second amplitude limiter, a second synchronous detector, a second input connected to the output of the second amplifier of the second intermediate frequency, and the registration unit, the output of the third local oscillator connected in series multiplier, the second an input connected to the output of the second amplitude limiter, bandpass filter and the second phase detector, a second input connected to the output of the second local oscillator, and the output connected to the second input of the recording unit, to the output of the second high-frequency generator connected in series to the second amplitude modulator, a second input connected to the output of the analog source message, the second phase arm, a second input connected to the output of a source of discrete messages, the fourth mixer, a second input connected to the output of the fourth Goethe is Odin, the intermediate frequency amplifier, a third amplifier, a second antenna switch, input-output of which is connected to the second receiving-transmitting antenna, and a fourth amplifier, the output of which is connected to a second input of the first mixer.



 

Same patents:

FIELD: medicine; cardiology.

SUBSTANCE: device can be used in clinical and experimental tests for registration; analysis and transmission of electrocardiographic signal. Parameters of electrocardiographic signal are determined at any point of patient's body due to finding projection of vector of electrocardiographic signal of heart at any preset direction. Device has amplifier, analog-to-digital converter with multiplexer, arithmetic unit, increment code analyzer, switch unit, digital modem, increment code number counter, memory and control units, unit for forming projections of vector of electrocardiographic signal of heart and unit for finding value of vector of electrocardiographic signal of heart at preset direction.

EFFECT: widened operational capabilities.

3 cl, 5 dwg

FIELD: medicine; medical engineering.

SUBSTANCE: method involves measuring physical characteristic of body surface. Micro-vibration power is measured in rest state on the body area under study during 0.5-5 min. Device has micro-vibration transducer and spectrum analyzer connected to visual recording device. The micro-vibration transducer is designed as electronic phonendoscope having pass band of 1-300 Hz. The visual recording device records variations of total micro-vibration spectral power in time. Mean micro-vibration power is determined. Its deviation from a reference value being equal to or greater than 40%, pathological process is considered to be available in the zone.

EFFECT: high accuracy in determining vestibular dysfunction cases.

2 cl, 3 dwg

FIELD: medicine; cardiology.

SUBSTANCE: device for registering electric cardiosignals has amplifier, analog-to-digital converter with multiplexer and arithmetic unit as well as increment code analyzer, switch unit, digital modem, increment code number counter, memory unit, control unit, heart electro-motive force vector projection forming unit, heart electro-motive force vector value determination unit and heart electro-motive force vector direction determination unit. Device has widened functional capabilities of electric cartographic testing by means of finding spatial disposition of electric axis of heart. Projection of heart vector to frontal plane is found from standard abstracts from extremities and to horizontal plane - from chest abstracts. Projection of vector of heart to sagittal plane is determined from projections of vector of heart to frontal and horizontal planes. Direction and value of projection of heart electro-motive force is determined from known projections in three-dimensional space.

EFFECT: improved efficiency.

4 cl, 7 dwg

FIELD: medicine; cardiology.

SUBSTANCE: device for registering resulting electrocardiogram at front and horizontals planes has amplifier, analog-to-digital converter provided with multiplexer, arithmetic device, increment code analyzer, first switching unit, digital modem, first memory unit and control-unit, second switching unit, unit for finding direction of electrical axis of heart, first multiplier and first storing adder.

EFFECT: widened functional capabilities.

2 cl, 4 dwg

FIELD: medicine; gastroenterology.

SUBSTANCE: during esophageal manometry, the respiratory pressure is measured twice: first time in the beginning of test and the second time after intramuscular introduction of 2-ml metoclopramide. When pressure increases from 10-13 mm to 14-34 mm mercury, the 1st degree of insufficiency of lower gullet sphincter is diagnosed. If pressure doesn't increase comparing to initial level of if pressure increases from initial level of 6-9 mm to 14-34 mercury, the second degree of insufficiency of lower gullet sphincter is diagnosed. If pressure doesn't increase from initial level of 6-9 mm or at increase of pressure from initial level of 2-5 mm to 14-34 mm, the third degree of insufficiency of lower gullet sphincter is diagnosed. In pressure doesn't prevail initial level of 2-5 mm of mercury, the 4th degree of insufficiency of lower gullet sphincter. Improved truth of results of diagnostics is provided by pharmacological test.

EFFECT: improved truth of results of diagnosis.

6 ex, 6 dwg

FIELD: medical engineering.

SUBSTANCE: device has individual transmitter part mounted on human body of each patient. The transmitter part comprises in series connected multiplexer which input serves as system input and analog-to-digital converter, microprocessor unit having common bus connected to analog-to-digital converter output and via register to multiplexer control input, in series connected encoder connected to common bus with its input and infrared radiator and receiving part having in series connected photoreceiver and decoder, in series connected digital-to-analog converter with register and demultiplexer which output serves as system input, another microprocessor unit which common bus is connected to register input of the digital-to-analog converter and decoder output and also connected to demultiplexer control input. The receiving part is common to all individual transmitting parts in series connected via digital-to-analog converter to register. Register input is connected to common bus of one more microprocessor unit, building signal permitting transmission for next individual transmitting part. Radio transmitter has radio transmitting antenna. Network of infrared detector units is arranged for detecting radiation emitted by each infrared radiator and connected to infrared photodetector input. The transmitting part has in series connected radio receiver and radio transmitting antenna and another analog-to-digital converter which output is connected to microprocessor unit common bus for processing signal, permitting and controlling telemetric data transmission for next individual transmitting part.

EFFECT: wide range of functional applications.

1 dwg

FIELD: medicine.

SUBSTANCE: method involves carrying out electroencephalographic examination and biochemical blood tests to determine β2-index from the electroencephalogram, catalase level, lipid hydroperoxide level, β-lipoproteins level or multi-factor standard personality study (MFSPS) and Spillberger-Khanin test for reactive anxiousness are applied with scale 1 values (Hs), K, 3 in MFSPS and reactive anxiousness level after Spillberger-Khanin. The obtained data are used for calculating diagnostic coefficient to be compared with a constant. The coefficient value being greater than the constant, toxic encephalopathy is to be diagnosed.

EFFECT: high accuracy of early stage diagnosis.

2 cl, 1 tbl

FIELD: medicine; magnetotherapy.

SUBSTANCE: to control any influence in the cycle, EEG is preliminary registered. Average and maximal possible levels of instant values of EEG-signal are determined and average amplitude value of Θ- rhythm harmonic is calculated. Low intensity electric magnetic field sequence of pulse influence is carried out when amplitude of Θ- rhythm harmonic is frequency spectrum of EEG at frequency being lower than 7 Hz than average amplitude of rhythm harmonics. Any pulse of electric magnetic field is brought into synchronization with preset value of EEG-signal from range between average and maximal possible levels of instant values of EEG-signal. After any influence pulse is applied, digitization of EEG-signal is delayed for 142 ms. Electric magnetic field is correlated with functional condition.

EFFECT: improved efficiency of treatment.

1 tbl

FIELD: medicine.

SUBSTANCE: method involves determining bioelectric field transducer signals received from percipient before and after suggestion action. Crystal resonator is used as the bioelectric field transducer of percipient in electromagnetic field generation mode with frequency of not less than 100 kHz. Changes in generated resonator frequency are interpreted in terms of suggestive action effectiveness. The higher is generation frequency the higher is positive result of the suggestive treatment.

EFFECT: high objectivity level in evaluating treatment results.

4 cl, 2 dwg, 1 tbl

FIELD: medicine.

SUBSTANCE: method involves treating gastrointestinal tract without drugs, cleaning organism with enema and lavage procedure, per os introducing a set of nutrient substrates and proper microflora metabolism regulators as a complex of bran and vegetable additives being carriers of micro- and macroelements in the following ingredient proportion taken in weight parts. Bran - 72-86, microelements carriers like green tea, sea kale, shelf fungus, agar-agar, wartwort - 2-3, macroelements carriers like sedge grass, nettle, balm - 1.5-2.5; microbiologic fermentation regulators like cardamom, chili, black pepper, red pepper, nutmeg - 1.0-2.0, fermentation initiator (pastry texturizing agent) - 0.2-0.5. Single lavage procedure with appropriate preparation or cleaning vegetable protein enema of 1.5-2 l is applied before introducing nutrient substrates. A course of own microflora cultivation in gastrointestinal tract is carried out by introducing nutrient substrates set and daily volume of liquid in the amount of not less than 30 ml/kg of body weight and 10-20 mg of lactulose.

EFFECT: enhanced effectiveness of treatment; minimized enema-mediated treatment.

3 cl, 3 dwg

FIELD: medicine, resuscitation.

SUBSTANCE: intensive therapy should be carried out, moreover, it is necessary to register somatosensor evoked potentials (SSEP), measure inter-peak interval N13-N18 at spinal lesions at C1-C2 level, N11-N13 at lesion at C1-C6 level and N22-C30 at lesions at C7-L3 level. Then one should calculate average arterial pressure (APav) and prescribe pressure-regulating medicinal preparations. Then comes control SSEP registration and at decreased values of inter-peak intervals one should change the preparation applied and its dosage, at constant level of inter-peak intervals - the dosage should be increased, and at increased values of intervals - one should intensify therapy due to increasing the dosage or substituting the preparation applied. SSEP values should be evaluated after changing the dosage of the preparation applied and in dynamics of investigation on the 3d, 5th and 9th d and, also, in case of deterioration of patient's health state. It has been provided due to applying a high-sensitive value that reflects the state of spinal cord.

EFFECT: higher efficiency of prophylaxis.

3 ex

FIELD: medicine, cardiology.

SUBSTANCE: the present innovation deals with optimizing therapy in patients at severe arterial hypertension. Before the onset of antihypertensive therapy it is necessary to conduct electrocardiography to detect the value of myocardial functional tension X according to the formula by taking into account QT interval. Then comes therapy including capoten, furosemid, atenolol or capoten and hypothiazid based upon X value being higher, lower or equal to 0.127. The innovation enables to choose adequate scope of procedures in patients with chronic arterial hypertension by taking into consideration possible body reaction to antihypertensive therapy even at primary inspection.

EFFECT: higher efficiency.

1 ex

FIELD: medicine.

SUBSTANCE: method involves determining vegetative patient status using unified test-inquirer and objective rated indices. Vegetative pulse rhythm index value is calculated and difference between heart beat rate and calculated real sinus node rhythm value is determined from mathematical formulas. Complex evaluation of predominating vegetative nervous system tone is produced as sympathetic, parasympathetic or mixed type on most of indices belonging to corresponding group.

EFFECT: high accuracy and simplicity of the method.

5 tbl

FIELD: medicine, sports medicine.

SUBSTANCE: one should study the values for variability of cardiac rhythm at detecting standard deviation against mean arithmetic duration of the next R-R intervals per period of investigation (SDNN) and/or square root out of mean sum of differences squares between the next R-R intervals (r-MSSD) and/or spirography at detecting mean volumetric rate of output (MVR 25-75%) and/or calculating Tiffno's index determined as the ratio of forced expiratory volume (FEV)/sec (FEV1) to vital capacity (VC): (VC)-(FEV1/VC). In case of decreased SDNN value being below 100 msec and/or r-MSSD value being below 80 msec, and/or increased MVR 25-75% up to 120% and more against due value and/or decreased Tiffno's index being below 70% one should consider the prediction for the growth of professional skills of future ballet's artists to be unfavorable. The innovation provides an opportunity for objective prediction of skill growth based upon accurate quantitative criteria reflecting interaction between tonicity of autonomic nervous system and parasympathetic department of regulation against physical adaptation abilities of the body.

EFFECT: higher accuracy of prediction.

7 ex, 15 tbl

FIELD: medicine.

SUBSTANCE: method involves carrying out pulsating Doppler echocardiographic examination. Mean pressure is determined in pulmonary artery. Mean pressure in pulmonary artery being less than 13 mm of mercury column, no cardiac rhythm disorders risk is considered to take place. The value being greater than 13 mm of mercury column, complex cardiac rhythm disorder occurrence risk is considered to be the case.

EFFECT: accelerated noninvasive method.

1 tbl

FIELD: medicine, neurology, psychopathology, neurosurgery, neurophysiology, experimental neurobiology.

SUBSTANCE: one should simultaneously register electroencephalogram (EEG) to detect the level of constant potential (LCP). At LCP negativization and increased EEG power one should detect depolarizational activation of neurons and enhanced metabolism. At LCP negativization and decreased EEG power - depolarized inhibition of neurons and metabolism suppression. At LCP positivation and increased EEG power - either repolarized or hyperpolarized activation of neurons and enhanced metabolism. At LCP positivation and decreased EEG power - hyperpolarized suppression of neurons and decreased metabolism of nervous tissue. The method enables to correctly detect therapeutic tactics due to simultaneous LCP and EEG registration that enables to differentiate transition from one functional and metabolic state into another.

EFFECT: higher accuracy of diagnostics.

5 dwg, 1 ex, 1 tbl

FIELD: medicine, neurology, psychopathology, neurosurgery, neurophysiology, experimental neurobiology.

SUBSTANCE: one should simultaneously register electroencephalogram (EEG) to detect the level of constant potential (LCP). At LCP negativization and increased EEG power one should detect depolarizational activation of neurons and enhanced metabolism. At LCP negativization and decreased EEG power - depolarized inhibition of neurons and metabolism suppression. At LCP positivation and increased EEG power - either repolarized or hyperpolarized activation of neurons and enhanced metabolism. At LCP positivation and decreased EEG power - hyperpolarized suppression of neurons and decreased metabolism of nervous tissue. The method enables to correctly detect therapeutic tactics due to simultaneous LCP and EEG registration that enables to differentiate transition from one functional and metabolic state into another.

EFFECT: higher accuracy of diagnostics.

5 dwg, 1 ex, 1 tbl

FIELD: veterinary medicine.

SUBSTANCE: method involves interpreting dynamic omega potential behavior pattern relative to its initial level during 6-7 min after applying artificial pain irritation. The method is applied beginning from animal age of 1 month. Omega potential is measured before and after pain irritation test. Omega potential level growing down, the animal is considered to be of low stress stability. Omega potential level growing high, the animal is considered to be of high stress stability.

EFFECT: enhanced effectiveness of method.

2 dwg, 2 tbl

FIELD: medicine, cardiology.

SUBSTANCE: one should register rhythmocardiogram, measure current total power in low-frequency and high-frequency areas of dynamic row of cardiointervals. Evaluation of psychophysiological state should be performed by the value of stress index S calculated due to original mathematical formula by taking into account the power of low-frequency and high-frequency constituents of the range of dynamic row of cardiointervals. In case of standard conditions of measurement - the rest lying at one's back position the value of S stress index should be considered to be equal to 1. The method enables to rapidly and noninvasively detect and range human psychophysiological state.

EFFECT: higher accuracy of evaluation.

2 dwg, 1 ex, 2 tbl

FIELD: medicine, neurology.

SUBSTANCE: one should establish neurological status, bioelectric cerebral activity, availability of perinatal and ORL pathology in patients, establish their gradations and numerical values followed by calculation of prognostic coefficients F1 and F2 by the following formulas: F1=-31,42+1,49·a1-2,44·a2+0,2·а3+1,63·a4+0,62·а5+3,75·a6+1,8·а7-3,23·a8-0,8·а9-1,32·а10+3,26·а11+8,92·a12-2,0·a13+3,88·а14+1,79·a15+0,83·a16-2,78·a17; F2=-27,58+1,43·a1+3,31·а2+0,08·а3+3,05·а4-0,27·а5+2,69·а6+3,11·а7-6,47·a8-6,55·a9+1,99·а10+5,25·а11+7,07·a12-0,47·a13+0,13·a14+4,04·a15-1,0·a16-1,14·а17, correspondingly, where a1 - patient's age, a2 - studying either at the hospital or polyclinic, a3 - duration of stationary treatment (in days), a4 - unconscious period, a5 - terms of hospitalization since the moment of light close craniocerebral trauma, a6 - smoking, a7 - alcohol misuse, a8 - arterial hypertension, a9 - amnesia, a10 - close craniocerebral trauma in anamnesis, a11 - psychoemotional tension, a12 - meteolability, a13 - cervical osteochondrosis, a14 - ORL pathology, a15 - availability of perinatal trauma in anamnesis with pronounced hypertension-hydrocephalic syndrome, a16 - availability of paroxysmal activity, a17 - availability and manifestation value of dysfunction of diencephalic structures. At F1 ≥ F2 on should predict the development of remote aftereffects in young people due to evaluating premorbid background of a patients at the moment of trauma.

EFFECT: higher reliability of prediction.

2 ex, 1 tbl

FIELD: medicine; medical engineering.

SUBSTANCE: method involves doing multi-channel recording of electroencephalogram and carrying out functional tests. Recording and storing rheoencephalograms is carried out additionally with multi-channel recording of electroencephalogram synchronously and in real time mode in carotid and vertebral arteries. Electroencephalograms and rheoencephalograms are visualized in single window with single time axis. Functional brain state is evaluated from synchronous changes of electroencephalograms, rheoencephalograms and electrocardiograms in response to functional test. The device has electrode unit 1 for recording bioelectric brain activity signals, electrode unit 2 for recording electric cardiac activity signals, current and potential electrode unit 3 for recording rheosignals, leads commutator 4, current rheosignal oscillator 5, synchronous rheosignal detector 6, multi-channel bioelectric brain activity signals amplifier 7, electrophysiological signal amplifier 8, demultiplexer 9, multi-channel rheosignal amplifier 10, multi-channel analog-to-digital converter 11, micro-computer 12 having galvanically isolated input/output port and personal computer 13 of standard configuration.

EFFECT: enhanced effectiveness of differential diagnosis-making.

11 cl, 6 dwg

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