Ureteroscopy Combined With Negative Pressure Sheath Treatment of Kidney Stones

The patients enrolled in the group should complete the routine clinical diagnosis and treatment before the operation, including non-contrast CT scan of the urinary system (before surgery), urine routine, urine culture, etc. The postoperative follow-up mainly includes complications after the operation, the time of removing the D-J tube, the time of removing the urinary catheter, urine routine, urine culture, etc. The blood routine, blood chemistry, etc. should be reexamined in the outpatient department one month (4 weeks) after the operation.Patients underwent low-dose CT (DLP:0.45 mGy·cm) scans on the first day and one month after surgery.

During the operation, we will collect some data, including the time when invasive procedures start, the total operation time, the renal pelvis pressure, laser power, and total laser energy; we will also keep a backup of the operation video.

Inclusion criteria

• Patients diagnosed with kidney stones with a diameter of 2-3cm by computed tomography;
• Age > 18 years old;
• The anatomical structure of the kidney is normal, without deformity;
• No serious heart and lung disease (ASA grade I-III)
• Through preoperative communication, patients and their family members indicated that they were fully aware of the condition and the choice of treatment plan, and signed informed consent and informed choice notification;

Exclusion criteria

• Simultaneous operation is required for ipsilateral ureteral calculi or contralateral upper or lower urinary calculi.
• Severe coagulation dysfunction;
• Patients who do not sign informed consent and cannot cooperate with the study;