Defibrillator bridge discharge circuit capable of precisely controlling conduction process

Abstract

The invention provides a defibrillator bridge discharge circuit capable of precisely controlling the conduction process. The defibrillator bridge discharge circuit comprises a logic control module, adriving circuit power supply module, an electronic switch driving module and a bridge discharge circuit module. The bridge discharge circuit module realizes the emission control of the two-phase exponential truncated waves through orderly conduction of the electronic switch. The driving circuit power supply module is used for supplying power to the electronic switch driving module. The electronicswitch driving module provides sufficient voltage and current for conduction of the electronic switch in the bridge discharge circuit module. The logic control module outputs a control signal to control on-off of the electronic switch driving module so as to realize control of the conduction order and time of the electronic switch. The safety hidden trouble existing in the control process of the discharge circuit can be solved, the control method of the electronic switch at the high voltage end of the discharge bridge can be optimized, and the accurate controllable two-phase exponential truncated wave emission on the target load can be realized.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a defibrillator bridge discharge circuit which can precisely control the conduction process. Background technique [0002] Sudden cardiac death is a natural death caused by cardiac causes. Ventricular fibrillation is the main cause of sudden cardiac death. Clinically, electric shock defibrillation is often used to terminate ventricular fibrillation. Studies have shown that using biphasic exponential truncated waves for electrical defibrillation can effectively reduce the defibrillation threshold and improve the success rate of defibrillation. The general method to realize biphasic exponential truncated wave delivery in a defibrillator is: store electric energy in a capacitor, and then control the orderly conduction of the discharge bridge to complete the discharge on the target load (usually the patient). [0003] In order to ensure the success of defibrillation, it ...

AI Technical Summary

Problems solved by technology

[0003] In order to ensure the success of defibrillation, it is usually necessary to release high voltage and high current on the target load, but if the discharge bridge circuit is not properly controlled, it may damage the internal components of the defibrillator, and even endanger the life of the patient, so the safety of the defibrillation discharge circuit Performance and reliability are very important, which requires precise control of the discharge process of the discharge bridge, and the response speed must be fast enough

[0004] In addition, since the discharge action of the discharge bridge is controlled by the main control module working under low voltage conditions, the control of the electronic switch at the high voltage end of the discharge bridge is a difficult point in the design of the defibrillator hardware circuit

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