Prospective Study on the Safety and Efficacy of Robot-Assisted Laparoscopic Partial Nephrectomy With Renal Artery Off-Clamp in the Treatment of cT1 Renal Tumors

Inclusion Criteria: * Imaging examination confirms a T1 renal tumor (including T1a and T1b), and the investigator deems partial nephrectomy to be beneficial. * Age ranges from 18 to 90 years. * No history of severe kidney disease or autoimmune disorders. * Cardiopulmonary function indicates the ability to tolerate major abdominal surgery. * ECOG performance status score is 0 or 1. * Willingness to undergo zero-ischemia partial nephrectomy and able to provide written informed consent, understanding and agreeing to comply with the study requirements and evaluation schedule. Exclusion Criteria: * Imaging assessment shows a tumor stage of ≥T2. * Imaging indicates that the tumor is located in the renal pelvis or is a Wilms' tumor, etc. * The investigator considers the patient unsuitable for partial nephrectomy. * Major surgery or significant trauma occurred within 28 days prior to enrollment. * Live vaccine received within 28 days prior to enrollment. * Severe chronic or active infections requiring systemic antibacterial, antifungal, or antiviral treatment occurred within 14 days prior to enrollment. * Any traditional Chinese medicine or herbal supplements for cancer treatment taken within 14 days prior to enrollment. * Participation in any other clinical trials.