This prospective, randomized, Phase III trial evaluates the efficacy and safety of VasoClip®, a novel polymer surgical clip with a Z-groove and an elastic notch, designed to enhance mechanical grip and prevent slippage. Forty patients undergoing robotic urologic surgery were randomized to receive either VasoClip® or the standard WeckClip®. The primary objective is to compare ligation success rates, assessed through a double-blinded review of surgical videos. This study aims to provide clinical evidence for the performance and safety of this structurally improved device in robot-assisted procedures.

Inclusion Criteria:

• Patients aged 20 years or older.
• Scheduled for robotic or laparoscopic urologic surgery where the use of polymer ligating clips is anticipated.
• Voluntary informed consent.

Exclusion Criteria:

• Clinically significant coagulation disorders (PT-INR > 1.2).
• Severe vascular diseases (e.g., peripheral arterial occlusion, microvascular heart disease).
• Comorbidities inducing excessive bleeding (e.g., active urinary tract infection, liver cirrhosis).
• Conditions affecting blood cell or platelet production (e.g., leukemia).
• Known coagulation factor deficiencies (e.g., hemophilia)