It is suitable for CT-guided pulmonary nodule marking and localization in patients undergoing thoracoscopic surgery, guiding intraoperative pulmonary nodule resection. The lung nodule memory alloy positioning coil is a medical device used for pulmonary nodule localization, commonly used during pulmonary nodule biopsy or surgery, to help doctors precisely locate the nodule. This device is typically made of an alloy with a "memory effect," which allows it to return to a preset shape at a specific temperature. It is widely used in medicine, particularly in the diagnosis and treatment of lung diseases. Memory alloys are metal materials with a unique property that allows them to return to a preset shape when heated to a certain temperature. Leveraging this property, the lung nodule memory alloy positioning coil can change shape under specific conditions, ensuring accurate positioning during surgery or biopsy. The coil is designed to allow for precise positioning using endoscopes or imaging devices (such as CT scans). As the doctor manipulates the coil, the coil is displayed on the imaging device, allowing the precise location of the nodule to be determined. The lung nodule memory alloy positioning coil is an innovative and practical medical device widely used for the precise localization and treatment of pulmonary nodules. The unique properties of its memory alloy material enable the device to provide higher precision and efficiency in lung surgery, helping doctors achieve more accurate nodule resection, biopsy and other operations, thereby improving surgical safety and success rate.