Ultrashort pulse defibrillator

Abstract

The invention belongs to the technical field of medical instruments and particularly relates to a defibrillator. An ultrashort pulse defibrillator comprises a direct current power supply, an energy storage capacitor and a pair of electrodes which are connected in sequence, and further comprises a discharge switch circuit, wherein the discharge switch circuit is arranged in front of the energy storage capacitor and the pair of electrodes and used for controlling the discharge time of the energy storage capacitor; and a boosting transformer, wherein the boosting transformer is arranged between the discharge switch circuit and the pair of electrodes, and the boosting transformer boosts a voltage of the energy storage capacitor to a preset amplitude. According to the defibrillator, a nanosecond-to-microsecond ultrashort pulse electric field is used for proceeding defibrillation, and energy deposited on ventricular cells is less in pulse action time, so that the destructive effect of defibrillation pulses on myocardial cells is reduced, the irreversible electroporation damage to the myocardial cells is reduced, and the defibrillation rate is also increased.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a defibrillator. Background technique [0002] A defibrillator is a device that uses electrical impulses to terminate ventricular fibrillation and restore sinus rhythm. As an important medical electronic device for converting malignant arrhythmias such as ventricular fibrillation and ventricular tachycardia, cardiac defibrillators have been widely used clinically. However, the current success rate of clinical rescue of such patients is still unsatisfactory. Since its invention in 1962, improving the success rate of defibrillation and reducing the side effects of defibrillation have been the goals that people have been pursuing. [0003] Traditional defibrillators use energy to defibrillate based on the principle of electrical stimulation of cardiomyocytes. Side effects of such defibrillators may include increased morbidity and mortality, anxiety, pain, and ...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at providing an ultra-short pulse defibrillator for the existing defibrillator because the pulse width of the defibrillation waveform is too wide and the number of times is too large, which is prone to irreversible electroporation and causes irreversible damage.

Images