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Pulse generation circuit and control method applied to pulsed electric field ablation technology

A pulse electric field and circuit generation technology, which is applied in electric pulse generator circuits, parts of surgical instruments, surgery, etc., can solve the problems of complex implementation methods and high costs, and achieve reduced difficulty, simple circuit voltage control, and power supply mode settings Flexible and varied effects

Active Publication Date: 2020-06-30
SICHUAN JINJIANG ELECTRONICS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Not only the implementation method is complicated, but also the cost is high

Method used

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  • Pulse generation circuit and control method applied to pulsed electric field ablation technology
  • Pulse generation circuit and control method applied to pulsed electric field ablation technology
  • Pulse generation circuit and control method applied to pulsed electric field ablation technology

Examples

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Embodiment 1

[0073] A pulse generating circuit applied to pulse electric field ablation technology, the principle block diagram is as follows figure 1 As shown, the circuit includes N switch modules, each switch module includes a capacitor and four switch sub-modules, the four switch sub-modules are respectively Sn1, Sn2, Sn3, Sn4, among the four switch sub-modules, the switch sub-module Sn1 It is connected in series with Sn3 to form the first switch branch Ln1, the switch sub-modules Sn2 and Sn4 are connected in series to form the second switch branch Ln2, and the first switch branch Ln1 and the second switch branch Ln2 are connected in parallel, wherein, n∈(1,2, 3,...N). Specifically, the first switch module includes capacitors and four switch sub-modules S11, S12, S13, and S14. The switch sub-modules S11 and S13 are connected in series to form the first switch branch L11, and the switch sub-modules S12 and S14 are connected in series. The second switch branch L12, the first switch bran...

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Abstract

The invention relates to a pulse generation circuit and a control method applied to a pulsed electric field ablation technology in the field of high-pressure pulse application. The circuit comprises aplurality of switch modules, wherein each switch module comprises a capacitor and four switch sub-modules; in the four switch sub-modules, every two switch sub-modules are connected in series to formtwo serial switch branches, and the two serial switch branches are connected in parallel; and the plurality of switch modules form a full-bridge topological structure. The invention discloses the pulse generation circuit applied to the pulsed electric field ablation technology. The plurality of switch modules form the full-bridge topological structure, through the switching of switches, a positive pulse, a zero pulse, a negative pulse and a combination of the above pulse can be output, the circuit can be under a zero charging pulse state, and the capacitor can be subjected to electric energysupplementation during an intermittent stage of pulse output.

Description

technical field [0001] The invention relates to the application field of high-voltage pulses, in particular to a pulse generating circuit and a control method applied to pulse electric field ablation technology. Background technique [0002] Existing treatments for tachyarrhythmias often use thermal ablation techniques such as radiofrequency and freezing. Among them, radio frequency technology can generate a fixed frequency sine wave. The generated radiofrequency energy acts on the lesion to be treated through the radiofrequency catheter or radiofrequency electrode, so that it can achieve the effect of blocking or conditioning, and then achieve the therapeutic effect. Cryoablation absorbs heat through the evaporation process of the liquid refrigerant in the cryoballoon, causing the temperature around the ablation target to drop suddenly. Through low temperature, the tissue cells in the lesion area are damaged or killed, so as to achieve the purpose of treatment. These abl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14H03K3/02A61B18/00
CPCA61B18/1206A61B18/1233A61B18/14A61B2018/00351A61B2018/00577H03K3/02
Inventor 黄雍俊李勤波朱显钊魏少勋陶亮季建云
Owner SICHUAN JINJIANG ELECTRONICS SCI & TECH CO LTD
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