Defibrillator

 

(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.

 

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