Multi-electrode radio frequency ablation catheter and design method thereof

Abstract

The invention discloses a multi-electrode radio frequency ablation catheter and a design method thereof. The multi-electrode radio frequency ablation catheter is designed into a catheter ablation working end (1), a main body section (2) and a control handle (3), wherein the catheter ablation working end (1) is of a structure of kinematic pair mechanism (31) which comprises a plurality of single-group kinematic pairs (32). Each single-group kinematic pair (32) is connected with a catheter ablation working end or working contact of an independent or linking single-group catheter formed by electrode tubes (7) and head electrodes (10). After expanding, the kinematic pair mechanism (31) is in an umbrella shape (30). A plurality of head electrodes (10) are evenly distributed around blood vessels and tightly attached to the inner wall of the renal artery to achieve mapping ablation. The multi-electrode radio frequency ablation catheter is easy and convenient to operate, flexible in adjustment, accurate in ablation positioning and capable of monitoring ablation temperature in real time. In addition, by means of the multi-electrode radio frequency ablation catheter, the mapping ablation can be operated repeatedly until the effect is exact, curative effect is improved, complications of treatment are reduced, and risks of operations are reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a multipolar radiofrequency ablation catheter including renal arteries, and more specifically relates to a simple, fast and safe multipolar radiofrequency ablation catheter for treating intractable hypertension and a design method. Background technique [0002] About 1 billion adults in the world suffer from high blood pressure, and one-third of them are effectively controlled. Underdiagnosis and poor treatment compliance are one of the reasons for the poor efficacy, but a large number of patients cannot be effectively controlled even with the best medical treatment. American Heart Association (AHA) [0003] A scientific statement was published in 2008, and resistant hypertension was defined as; after lifestyle modification, taking 3 antihypertensive drugs with different mechanisms of action (one of which is a diuretic) at the same time, or requiring at least 4 drugs to re...

AI Technical Summary

Problems solved by technology

However, the Symplicity ablation catheter and treatment methods have the following shortcomings: 1) It is impossible to map the sympathetic nerve innervation points of the renal artery, and 6-8 points need to be randomly ablated to meet the requirements; 2) It is impossible to map the ablation status and judge the ablation effect; 3) The treatment When the ablation point is uneven, the ablation point may be repeated at the same point, and there is a risk of blood vessel perforation; 4) Too many ablation points will cause excessive scarring on the vessel wall, which may cause renal artery stenosis

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