Electrode, electrophysiological catheter and ablation system

Abstract

The electrode is used for being arranged at the far end of a catheter, the electrode comprises an electrode near end part, an electrode main body part and an electrode far end part which are sequentially connected from the near end to the far end, and the electrode main body part comprises a first section and a second section which are connected in the axial direction of the catheter; at least one of the electrode near-end part and the electrode far-end part is used for being movably connected with a catheter; the electrode main body part is configured to be switched between a contracted form and a folded form along with relative movement of the electrode near end part and the electrode far end part along the catheter; when the electrode main body part is in the folded state, the electrode main body part expands outwards in the radial direction of the catheter, so that the first section and the second section incline oppositely, and staggered arrangement in the transverse direction of the catheter is formed. By configuring the electrode main body part in the folded form, the influence on the attaching area between the electrode main body part and a preset part due to electrode torsion dislocation can be avoided; the attaching area between the electrode main body part and the preset part can be increased, the electric field around the preset part is improved, and the ablation effect is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an electrode, an electrophysiological catheter and an ablation system. Background technique [0002] In the field of electrophysiological therapy, the use of electrophysiological catheters to transmit energy for tissue ablation is a common method. Specifically, the electrophysiological catheter includes a catheter and an electrode arranged on the head end of the catheter. After the head end of the catheter is inserted into the target point to be treated, energy is supplied to the electrode through the energy supply platform, and the electrode is connected to the target point. Snug to deliver energy to the target for ablation. Among them, the commonly used energy is the pulsed electric field of irreversible electroporation, which is cell-selective, especially in the process of pulmonary vein isolation and ablation, which can effectively avoid damage to the esophagus and p...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an electrode, an electrophysiological catheter, and an ablation system, one of which is to solve the problem in the prior art that the abutment area between the electrode and the target cannot be maximized after the electrode is twisted, thereby affecting the ablation effect; another purpose is to Solve the problem that the limited electrode density of the electrode used for twisting in the prior art affects the ablation depth

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