Three-lumen PEEK capillaries are used in minimally invasive gastrointestinal surgery. Gastrointestinal radiofrequency ablation surgical instruments are a new type of minimally invasive surgical instruments. Designers use the structure and material of PEEK three-lumen tubes to ensure the effectiveness of the instrument. The three holes in the PEEK three-lumen tube are respectively equipped with: 1 cooling water, 2 sensors, and 3 electrode circuits.

Because PEEK material has good heat resistance and insulation properties, it has both rigidity and toughness, and can achieve good guidance, which is a blessing for patients undergoing radiofrequency ablation surgery in the gastrointestinal tract and other organs.