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Double-phase constant-flow type cardiac defibrillator

A defibrillator and heart technology, applied in the direction of cardiac defibrillator, instrument, current collector, etc., can solve the problems of unstable defibrillation waveform, strict technical requirements, myocardial cell damage, etc., and achieve stable and controllable defibrillation current, Improve the release efficiency and ensure the effect of the output waveform

Active Publication Date: 2021-03-02
SHANGHAI UNIV OF MEDICINE & HEALTH SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The early biphasic wave defibrillation has the following defects: under the condition of setting the output energy, the current changes with the patient's impedance, the defibrillation current is lower for patients with high impedance, and the defibrillation current for patients with impedance is larger
[0007] 2. Unstable defibrillation waveform
[0008] 3. If the defibrillation peak current and its rate of change are too large, it is easy to cause skin burns and myocardial cell damage
High-voltage inductors and high-voltage energy storage capacitors are bulky and have strict technical requirements

Method used

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  • Double-phase constant-flow type cardiac defibrillator
  • Double-phase constant-flow type cardiac defibrillator
  • Double-phase constant-flow type cardiac defibrillator

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] A biphasic constant-current cardiac defibrillator, comprising: a power module 1, the power module 1 is sequentially connected to a charging module 2, an energy storage capacitor 3, a high-frequency converter 4, an H-bridge circuit 5, defibrillation electrodes 6, and an H-bridge The circuit 5 is sequentially connected to the current detection circuit 7, the error amplifier 8, and the high-frequency converter 4;

[0033]The first interfaces of the optocoupler OP1, optocoupler OP2, optocoupler OP3, and optocoupler OP4 in the H bridge circuit 5 and the current detection circuit 7 are respectively grounded, the second interface and the third interface are respectively connected, and the sixth interface Connect with the 7th interface respectively, the 5th interface of OP1, resistor RG1, and the 8th interface of OP1 are connected in series, the...

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Abstract

The invention relates to a double-phase constant-current heart defibrillator which comprises a power supply module, the power supply module is sequentially connected with a charging module, an energystorage capacitor, a high-frequency converter, an H-bridge circuit and a defibrillation electrode, and the H-bridge circuit is sequentially connected with a current detection circuit, an error amplifier and a high-frequency converter. The defibrillator can defibrillate after being started, achieves deep negative feedback, reduces the size of a pulse generator, improves the success rate of defibrillation, and is stable and controllable in defibrillation current.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a biphasic constant-current type cardiac defibrillation that can be defibrillated upon startup, has deep negative feedback, reduces the volume of the pulse generator, improves the success rate of defibrillation, and has a stable and controllable defibrillation current. device. Background technique [0002] Ventricular fibrillation refers to the disordered excitation of the ventricle, resulting in the loss of regular and orderly excitation and diastolic and systolic function of the ventricle, which are all functional sudden cardiac arrest (SCA). This means that the person's heart has stopped pumping blood, which is a fatal arrhythmia. Ventricular fibrillation is an extremely chaotic manifestation of the heart's electrical activity and is generally difficult to stop on its own. Defibrillation refers to the simultaneous depolarization and repolarization of all myocardial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/39G05F1/46G05F1/575H03K7/08H02J7/00H02M9/00H02M9/04
CPCA61N1/39A61N1/3968A61N1/3975G05F1/461G05F1/575H03K7/08H02J7/0068H02M11/00H02J2207/50
Inventor 李萍高亚罕单纯玉张杏芳崔玉仲贝贝郭珊印
Owner SHANGHAI UNIV OF MEDICINE & HEALTH SCI
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