Radio-frequency ablation catheter having spiral structure and device thereof

A radio-frequency ablation catheter having a spiral structure, comprising an elongated catheter body, wherein an electrode support of a spiral shape is disposed at a front end of the catheter body, multiple electrodes are disposed on the electrode support, and a control handle is disposed at a rear end of the catheter body, wherein

• a slidable support wall-attachment adjusting wire is disposed in one lumen in the electrode support and the catheter body, and the support wall-attachment adjusting wire consists of a flexible section that is distant from the control handle and a rigid section that is near the control handle;
• a head end of the support wall-attachment adjusting wire penetrates through the electrode support, then is limited at a outside of the electrode support, and can move related to the electrode support;
• a tail end of the support wall-attachment adjusting wire penetrates through the catheter body and is fixed on the control handle;
• and the control handle is used to control the support wall-attachment adjusting wire to move forward and backward;
• when the electrode support naturally expands to perform wall attachment, a wall attachment status of the electrode can be further adjusted by further pulling the support wall-attachment adjusting wire.