Mesh cage type radiofrequency ablation catheter

Abstract

The application discloses a mesh cage type radiofrequency ablation catheter which comprises a core tube assembly and a plurality of electrodes mounted on the core tube assembly. The core tube assemblycomprises a core tube and an expansion part connected to the far end of the core tube. The expansion part has a loading state of being folded in a radial direction and an expansion state of being expanded in a radial direction; the expansion part in the expansion state is in a three-dimensional mesh cage shape and includes plurality of hollow elastic rods; one end of each of the elastic rods is gathered and connected and the other ends of the elastic rods are fixedly inserted into the far end of the core tube. According to the technical scheme, with the expansion part, the core tube assemblycan realize stable, convenient and accurate ablation operation on respiratory tracts of different positions and shapes, so that the operation efficiency and the treatment effect are improved.

Description

technical field [0001] The present application relates to the field of interventional therapy, in particular to a cage-type radiofrequency ablation catheter. Background technique [0002] Chronic Obstructive Pulmonary Disease (COPD) is the most common disease of the respiratory system. In our country, according to the existing epidemiological survey evidence, the prevalence of COPD among adults over 40 years old is 10%. %about. [0003] At present, COPD mainly relies on drug treatment, and anticholinergic drugs are used to specifically block M receptors, causing airway smooth muscle relaxation, airway relaxation and mucus secretion reduction, thereby reducing airway obstruction and relieving symptoms of COPD patients. Therapeutic ablation (Targeted Lung Denervatiom, TLD) lung denervation therapy ablation targets the parasympathetic nerve, blocking its innervation, so as to achieve permanent anticholinergic effect. This method has completed a feasibility clinical study in 2...

AI Technical Summary

Problems solved by technology

[0007] The inventors found that in the related art, most of the loop catheters are electrophysiological mapping catheters, and most of the ablation catheters are unipolar ablation, so multiple ablations are required during the treatment process, so that the ablation forms a closed loop, and the operation process is cumbersome and complicated. Treatment effect is difficult to control

If the degree of ablation is insufficient, the ablation point is not easy to form a closed loop, and it is difficult to effectively block; if the degree ...

Images