The goal of this clinical trial is to evaluate the efficacy and safety of the two-point approach in patients with intrahepatic bile duct stones。The main questions it aims to answer are: ①By comparing the technical success rate and clinical success rate of the two-point method and the non-two-point method, the clinical effect of the two methods was judged. ② To analyze the probability of short-term complications of the two-point method during the operation and to judge its safety. ③ Patients were followed up after the two-point method to determine the recurrence rate of stones and the probability of long-term complications. The researchers will compare the two-point method with conventional PTCS to evaluate its effectiveness.
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Technical success rate
Timeframe: up to 1 week
Clinical success rate
Timeframe: up to 1 week
Stone recurrence rate
Timeframe: through study completion, an average of 1 year