SU1012922A1 - Respiration electric stimulator - Google Patents

Abstract

ELECTROSTIMULATOR. RESULTS, containing series-connected electrodes and an ECG amplifier, interconnected threshold circuit and: cardiac cycle counter, generator and stimulating electrodes, so that. that, in order to improve the safety of strings, it is equipped with a serially connected heart rate meter, delay circuit and key switch, the key is connected to the ECG amplifier and threshold circuit, the delay circuit is connected to the heart cycle counter and generator, and the heart cycle meter is connected to the threshold circuit. .

Description

FIELD OF THE INVENTION The invention relates to medicine, namely, respiratory electrostimulators. Electrostimulators of respiration are known, which contain electrodes, an amplifier generator, and a switch}. The disadvantage of these devices is low security, stimulation caused by a mismatch between heart rhythm and breathing rhythm. ; Electrostimulators of respiration are known that contain electrodes. EC1 amplifier, dual circuit, heart cycle counter, generator and stimulating electrodes C23. A disadvantage of the known devices is the low safety of stimulation caused by the influence of stimulating pulses on the operation of the device. The purpose of the invention is to enhance the safety of stimulation. To achieve a goal, a respiratory electrostimulator containing successively connected electrodes and an ECG amplifier are provided. interconnected threshold circuit and cardiac cycle counter, generator and stimulating electrodes, serially connected cardiac cycle meter; a delay circuit and a key, the key being connected to an ECG amplifier and a threshold circuit, the ifK delay circuit is connected to a heart cycle counter and a generator, and a heart cycle meter is connected to a threshold circuit. FIG. 1 shows a block diagram of the proposed device, in FIG. 2, conditional timing diagrams of signals at the outputs of individual units. The breathing stimulator contains electrodes 1, amplifier 2, ECG, key 3. Porous circuit 4, heart cycle meter 5, heart cycle meter 6, delay circuit 7, generator 8 and stimulating electrodes 9. Electrodes 1 are fixed on the patient's body in the heart region and the stimulating electrodes 9 are located near the respiratory nerve. The device works as follows. Electrocardiographic j signal Sfig. 2 a) from the electrodes 1 is fed to the amplifier 2 of the ECG, in which the signal is amplified. Due to the choice of frequency response amplify; w 2 ECG with resonance at a frequency of about 15 Hz and with slopes 12-18 dB / oct provides an improvement in the ratio of the amplitude of the R-teeth signal to the amplitude of other ECG teeth and various interferences. From the output of the ECG amplifier 2 signal (Fig. 26) through the switch 3, it enters the input of the threshold circuit 4, at the output of which pulses are formed corresponding to the ECG teeth (Fig.2g) .. From the output of the threshold circuit 4, the pulses arrive at the input of the cardiac counter 5 cycles, which carries out the division of the frequency of the input pulses and through which the input of the delay circuit 7 passes, for example, every 3rd pulse threshold from:; 4 am (fig.2d. From the output of the threshold circuit 4, the pulses also go to the input meter 6 heart cycles, the voltage at the output of which is proportional to duration of cardiac cycles, the voltage at the output of which is proportional to the duration of cardiac cycles.When pulses from the output of the counter 5 heart cycles arrive at the input of circuit 7, pulses are formed at its outputs, the beginning of which coincides with the beginning of the input pulses, and the duration is proportional to the voltage applied to the second input of the circuit 7 delays from the output of the meter 6 heart cycles, i.e. proportional to the duration of the heart cycles, and is selected at the first output close to the duration of the 1 and heart Clove (2e) and the second output of 100-200 ms longer than the first. From the first output of the delay circuit 7, the pulses arrive at the input of the generator of 8 pulses, the output of which in these pulses is the formation of stimulating pulses (Fig. 2h), which through the stimulating electrodes 9 flow to the patient, causing him to die. From the electrodes 1, stimulating signals are supplied through the amplifier 2 to the switch 3, the control input of which receives a pulse from the second output of the delay circuit 7 (Fig. 2g), closing the switch. Since these pulses end later with 100–200 ms of the termination of the stimulating pulses. The input of the threshold circuit 4 does not pass not only stimulating pulses, but also interference from the polarization voltage of the stimulating electrodes (Fig. 2c). Thus, the proposed device completely lacks the possibility of triggering a threshold device from stimulating pulses, as a result of which it provides high-noise-resistant stimulation of respiration, the frequency of which depends on the needs of the organism in any mutual arrangement of electrocardiogram electrodes and stimulating electrodes, which increases the safety of stimulation.

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Claims (1)

BREATH ELECTRIC STIMULATOR, containing serially connected electrodes and an ECG amplifier, interconnected threshold circuit and a cardiac cycle counter, a generator and stimulating electrodes, which means that in order to increase the safety of stimulation, it is equipped with a series-connected cardiac cycle meter , a delay circuit and a key, wherein the key is connected to an ECG amplifier and a threshold circuit, the delay circuit is connected to a heart cycle counter and a generator, and the heart cycle meter is connected to a threshold scheme. Figure 1 zmroriis l