(57) Abstract:

Usage: the invention relates to medicine and can be used to eliminate fibrillation. The inventive device includes a power source, the unit forming the defibrillation pulse, the distributor signals and electrodes with the corresponding functional relationships, and block the formation of defibrillation pulses contains a group of diodes and condensation. 2 Il.

The invention relates to medicine, namely to devices for removing fibrillation.

Know the device containing the block of formation of the defibrillation pulse, the distributor of the signal, the power source and the electrodes.

The device is large in size and weight, and does not provide bipolar defibrillation pulses of equal amplitude.

In Fig. 1 shows a block diagram of the defibrillator of Fig.2 the shape of the pulses at the output of the control unit and the output of the defibrillator.

The defibrillator operates as follows.

A source of AC voltage with a voltage of 1.5 to 1 kV 1 is connected through the contacts button KN and diodes D1-D4and capacitors14(at this time the contacts TO11TO41relay R1-R4open). Capacitors WITH1-C4charged and the charging voltage is controlled by a high resistance voltmeter. Upon reaching the desired charge voltage of the capacitors1-C4the KN button is released. For reliable defibrillation on the control unit selects the required number of defibrillation pulses (Fig.2) two, four, etc. and click "defibrillation" (Fig.1 and Fig. 2 is not shown). The control unit generates a series of pulses to the relay R1-R4that trigger, closing the sequence of their contacts circuit capacitors WITH1-C4the electrodes of the defibrillator e1. A series of pulse discharge capacitors1-C4enters the heart. In Fig.2 shows a series of pulses at the output of the control unit of the VSIMP.and the series of pulses at the output of the defibrillator Vo. The shape of the pulses Voshown is conditional, because it must match the curve, changing exponentially.

Due to the fact that the charge voltage of the capacitors1-C4is in the range of 0.5-1.0 kV in the circuit of the defibrillator can be used electrolytic Condes one voltmeter for measuring the voltage on the capacitors.

The defibrillator is used as follows.

For defibrillation of the heart defibrillator include in the network is 50 Hz, 220 V, click KN, the voltmeter measures the voltage of the capacitor charge, choose sufficient for defibrillation pulses, set them on the power control switch and press the button "defibrillation". At the output of the defibrillator comes a series of defibrillation impulses.

In view of the fact that the duration of the charge capacitors1-C4nowhere specified, the defibrillator can be the use of low power transformer with a secondary winding of 1.0 kV. Capacitors WITH1-C4charge voltage ranging from 0 V, i.e., the surge voltage on the capacitors is not observed, therefore, tested the breakdown voltage of the capacitors can be close to their operating voltage, which reduces the size and weight of the capacitor. Relay R1-R4use of average power, since the current in the circuit of the capacitor discharge does not exceed 15 A.

DEFIBRILLATOR, containing a power source, connected to one inputs of the processing unit defibrillation pulses, the other input of which is connected to the output of the distributor signals and mausica fact, that block the formation of defibrillation pulses contains a group of diodes and capacitors, and some of the diodes included in the forward direction, the other in reverse, some woody diodes are connected through the switch are one unit forming the defibrillation pulses, some conclusions of each pair of capacitors are connected and are one of outputs-output processing unit defibrillation pulses, other findings of each of the capacitors is connected to other terminals of the diodes, which are connected through contact pin of the relay and are another output processing unit defibrillation pulses.


Same patents:

FIELD: medicine.

SUBSTANCE: method involves creating therapeutic circuit fixed on patient body, at least two working therapeutic electrodes, measuring and analyzing patient-dependent electrophysical parameters, charging capacitive storage and its later discharging to the working therapeutic electrodes controlled with control unit. Transmitting defibrillation impulse of given power in discharging is carried out in dosed manner first with the first portion W1 of given power dose with the second portion W2 being accumulated on inductive defibrillation power accumulator and then with the second portion W2 of given power dose. Ratio of the first portion W1 of given power dose to the second portion W2 of given power dose of defibrillation impulse is selected from the range of 0.01 to 150. Defibrillation impulse current intensity is selected only when emitting the first portion W1 of given power dose. Cardiodefibrillation impulse is built as bipolar Gurvich impulse. The given power quantity usable for charging the capacitive defibrillator storage is selected to be equal to a value from the range of 4-500 J, defibrillation impulse current intensity being selected from the range of 0.005 to 175 A and voltage equal to a value from 3 to 30000 V. Means has power supply source having unit for controlling charge level of the capacitive storage, unit for building defibrillation pulses, switchboards formed by controlled keys, at least two working therapeutic electrodes and diodes bypassing the controlled keys, resistive current transducer, analog-to-digital converter and control unit having required functional communications to the analog-to-digital converter and controlled keys. The resistive current transducer is in current feeding bus having minimum potential relative to measuring unit under operation having analog-to-digital converter in its structure.

EFFECT: enhanced effectiveness of usage; high safety of patient treatment procedure.

7 cl, 9 dwg

FIELD: medical engineering.

SUBSTANCE: device has means for producing defibrillation pulse having electric current source, capacitive electric energy storage, high voltage commutator, control unit and control system having patient electrophysical parameter control means and high voltage pulses control means and at least two therapeutic electrodes. The device also has means for compressing human body chest manufactured for instance as elastic cuff having a built-in ultrasonic radiator.

EFFECT: high reliability in delivering defibrillation pulse at given address.

5 cl, 1 dwg

FIELD: medicine.

SUBSTANCE: invention concerns medicine area, namely to area of urgent cardiological resuscitation. The heart defibrillator for treatment of the patient in case of cardiovascular activity termination by means of the shock blow provided with the dosed out diphasic electric discharge of high-voltage condenser through the H-shaped bridge circuitry, contains the high voltage commutator A, B, C or D in each of the branches. According to the invention each of opposite polarity phases of a diphasic shock blow is managed in two stages on time in such a manner that for each pair of the commutators concerning the given phase, the first of pair commutators is changed over in leading state and remains leading during all this phase whereas the second commutator of this pair is shorted with some time delay in relation to the first commutator throughout some operated duration for establishment of a current flow through a body of the patient during this phase, and the second phase is processed in the same way by means of other pair of commutators.

EFFECT: wide use of the defibrillation device.

13 cl, 6 dwg

FIELD: physics.

SUBSTANCE: invention can be used for generating powerful bipolar and multiphase electric pulses. The method involves controlling series-connected single-type power cells containing electrical energy accumulators, and providing switching of positive and negative polarity of the connection of the energy accumulator to leads of the cell, and switching the electrical energy accumulator to leads of the cell, and having bypass diodes which provide flow of current through leads of the cell when electrical energy accumulators are disconnected from the leads of the cell. A signal from a current sensor is transmitted to the analogue input of a digital signal processor (DSP), from the digital outputs of which the power cells are controlled. Before completion of generation of a pulse, the digital signal processor periodically converts the signal from the current sensor, standardises it, calculates deviation from the current value stores in the digital signal processor of the pulse form and compares the deviation with four limiting values. Signals for controlling power cells are output from the outputs of the digital signal processor depending on the comparison results.

EFFECT: simplification of the method of generating pulses and reducing the number of circuit components.

7 dwg, 1 tbl

FIELD: medicine.

SUBSTANCE: group of inventions refers to medical engineering and is designed to restore normal rhythm and contractile function of heart. Automatic external defibrillator includes a pair of electrode plates; a controller connected to the electrode plates through the front-end circuit of ECG and running for analysis of ECG signals to determine whether ECT is recommended, high-voltage circuit connected to the electrode plates for carrying out biphasic defibrillation electric shock when ECT/treatment protocol storage device is recommended, which retains one or more of treatment protocols that include the protocol of single electroshock controlled by AED for carrying out a single biphasic electric defibrillation, followed by a period of cardio-pulmonary resuscitation (CPR); while the controller is connected to the treatment protocol storage device working to implement the protocol of single electric shock where the single electric shock protocol is the default protocol for AED. The second version of defibrillator also contains a battery connected to AED power circuit; user interface control elements the administrator works with to select either a single electric shock protocol, or protocol of repeated electric shocks through the resident piece of software in AED, without removal of battery or linking-up external hardware or software to the AED.

EFFECT: providing opportunities of time management of cardio-pulmonary resuscitation.

14 cl, 10 dwg

FIELD: electricity.

SUBSTANCE: bipolar signal shaping device includes electric energy accumulator, controlled electronic switches switching it and control diagram of the above switches. For shaping of positive and negative polarity signal the electric energy accumulator which is connected to circuit of in-series connected switches is installed. Each of switches is parallel connected to resistor. Control circuit of switches for changing the pulse shape controls the activation of electronic switches and circuit for shaping of bipolar signal. Bipolar signal shaping circuit consists of four switches in-series connected to electric energy accumulator and pulse shape change circuit so that when the first and the fourth switches close, current flows through load in the direction shaping positive polarity signal and when the second and the third switches close, current flows through load in the direction shaping negative polarity signal. Control signals of electronic switches are supplied from control diagram for shaping of bipolar signal.

EFFECT: simplifying and optimising electric circuit.

3 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to apparatuses for emergency medical care. The apparatus comprises a piece of clothing, a control unit arranged thereon used to control at least one physiological function of the patient to state an emergency, and a therapeutic device arranged on the piece of clothing and operatively connected to the control unit for treating the patient. The therapeutic device is a respiratory therapeutic device applied to supply oxygen, an oxygen-containing gas mixture and/or at least one drug endotracheally, and comprises a perforating unit to perforate the patient's trachea below the larynx.

EFFECT: use of the invention provides extending the range of apparatuses for emergency medical care.

20 cl, 2 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to system for carrying out CPR. Device of providing feedback in carrying out CPR contains sensor of compression, adapted for placement between rescuer's hands and victim's chest, module of control with feedback, connected with compression sensor, and programmed for registration of output data of compression, their analysis, identification of single compression cycles and comparison of single cycles of compression with multitude of evaluation criterions. Matrix of comparison is output on presentation device, and each element of matrix corresponds to comparison of one of single compression cycles with one of multitude of evaluation criteria. Method of feedback presentation includes stages of carrying out compression of victim's chest through sensor of compression, registration, analysis, identification and comparison of output data from compression sensor with multitude of evaluation in form of comparison matrix elements.

EFFECT: invention makes it possible to increase efficiency of improvement of technical methods in carrying out CPR.

19 cl, 6 dwg

FIELD: medicine.

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EFFECT: invention will make it possible to simplify adjustment of nominal working parameters Of CA monitoring system for selected type of patient population.

14 cl, 11 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment. An external defibrillator for two-phase defibrillation waveform supply comprises a high-voltage circuit, which accommodates a condenser, as well as a pair of electrodes and a number of switches. The high-voltage circuit is presented to charge the condenser to supply the defibrillation pulse. The switches comprise an H-bridge, connected between the condenser and electrodes and can be connected to first and second phases of the two-phase defibrillation waveform to the electrodes. A second-phase tilt is adjustable. The controlled conduction path comprises the H-bridge switch and enables the controlled conduction path for the second phase of the two-phase waveform.

EFFECT: using the invention enables higher safety and effectiveness of defibrillation.

12 cl, 6 dwg