18G Ultrafine Cryoablation Needle for Coaxial Biopsy and Cryoablation of Pulmonary Nodules

This prospective, single-center clinical study will evaluate whether an 18-gauge ultrafine cryoablation needle can be used feasibly and safely during CT-guided coaxial transthoracic biopsy of pulmonary nodules. Approximately 30 adults with pulmonary nodules highly suspected of malignancy who are unsuitable for or decline surgery or radiotherapy will undergo biopsy and cryoablation during the same procedure. The study will assess technical success, biopsy diagnostic performance, imaging-based local control, and device- or procedure-related adverse events. Participants will be followed for up to 36 months. The study hypothesis is that the same-tract procedure is technically feasible and provides acceptable safety and local disease control.