Heart pulse electric field ablation catheter
A technology of pulsed electric field and ablation catheter, which is applied in medical science, heating surgical instruments, surgery, etc., and can solve problems such as inability to adapt to different sizes of pulmonary veins
Pending Publication Date: 2021-11-05
LEPU MEDICAL TECH (BEIJING) CO LTD
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Problems solved by technology
[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the cardiac pulse electric field ablation catheter in the prior art cannot adapt to different sizes of pulmonary veins, thereby providing a cardiac pulse electric field ablation catheter
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[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention relates to the technical field of medical equipment, and particularly relates to a heart pulse electric field ablation catheter. The heart pulse electric field ablation catheter comprises a catheter body and an ablation assembly, wherein the ablation assembly is movably arranged in the catheter body and extends in the axial direction of the catheter body, a plurality of ablation ridges are arranged at the head of the ablation assembly and distributed in the circumferential direction of the catheter body at intervals, and ablation electrodes are arranged on the outer surfaces of the ablation ridges; the ablation assembly has a contraction state and a working state, in the contraction state, the ablation assembly moves towards the tail of the catheter body to make the ablation ridges completely retracted into the catheter body, and in the working state, the ablation assembly moves towards the head of the catheter body to make the ablation ridges extend out of the catheter body; and when the ablation assembly is in the working state, the ablation ridges are bent in the direction away from the axis of the catheter body. By controlling the length of the ablation ridges extending out of the catheter body and controlling the size of the ablation ridges unfolded into the working state, the ablation ridges are matched with the shape of the pulmonary vein orifice, and the ablation electrodes can be well attached to the myocardial tissue to ensure the damage degree of the myocardial tissue.
Description
technical field [0001] The invention relates to the technical field of medical equipment, in particular to a heart pulse electric field ablation catheter. Background technique [0002] Atrial fibrillation is one of the most common clinical arrhythmias with a high prevalence rate. In addition to inducing and aggravating heart failure, atrial fibrillation can also cause thromboembolic events, leading to stroke, and severe cases can cause death and disability. Early detection and early treatment are particularly important. [0003] At present, the main way to treat arrhythmia such as atrial fibrillation is to produce one or more lesions, which must be large enough to destroy the arrhythmia-causing tissue or sufficiently interfere or isolate the abnormal electrical conduction in the myocardial tissue to achieve the effect of treating arrhythmia . Short-term, high-intensity electric fields will affect the phospholipid bilayer structure of the cell membrane, making the cell memb...
Claims
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Login to View More IPC IPC(8): A61B18/12A61B18/14A61B90/00
CPCA61B18/12A61B18/1492A61B90/08A61B2018/00351A61B2018/00595A61B2018/1467A61B2090/08021
Inventor 徐铁丁毅寿张昱昕蒲忠杰张喜博吕浩政蔡杰
Owner LEPU MEDICAL TECH (BEIJING) CO LTD