Microwave ablation catheter tube body, manufacturing method and microwave ablation catheter using the same

Abstract

A tube body of a microwave ablation catheter, a manufacturing method and a microwave ablation catheter using the same. The tube body of the microwave ablation catheter includes a front tube and a rear tube. The front tube and the rear tube have overlapping parts, and the overlapping parts of the front tube and the rear tube are connected to the two parts of the tube body by welding or bonding. The tube body in the radiation area of ​​the microwave ablation catheter of the present invention can withstand high temperature, and at the same time, the whole tube body has flexibility, realizing large-volume ablation through the curved lumen passage, and its multi-layer composite structure makes it have high torque and High pushability, providing convenience for the tube body to pass through the narrow lesion in clinical practice.

Description

technical field [0001] The invention belongs to the field of microwave ablation medical devices, in particular to a microwave ablation catheter, in particular to a microwave ablation catheter body, a manufacturing method and a microwave ablation catheter using the same. Background technique [0002] Microwave ablation is widely used in the clinical ablation treatment of tumors. With the gradual development and improvement of new technologies and methods for microwave ablation treatment of tumors, microwave catheter technology will be gradually promoted in clinical treatment. Microwave ablation catheters can treat tumor lesions in the trachea of ​​the human lung and adjacent to the trachea. Due to the high core temperature of the microwave applicator when radiating microwave energy ablation, the core temperature of the ablation area of ​​the microwave applicator generally exceeds 150°C, which makes the medical catheter outside the applicator need to withstand high temperature...

AI Technical Summary

Problems solved by technology

In order to avoid the tube body of the microwave ablation catheter being melted by heat, the tube body can be made of high temperature resistant materials. will not spring back to its original shape

For example, thick-walled PEEK (polyether ether ketone), PI (polyimide), PTFE (polytetrafluoroethylene) and other materials, although they can withstand high temperatures of 150 ° C, they do not have flexible bending characteristics. The tube will be broken after bending, and the crease cannot be recovered

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