To investigate the safety and efficacy of flexible negative pressure suction sheath-assisted flexible ureteroscopic holmium laser lithotripsy.

Retrospective analysis of the clinical data of 128 patients with upper urinary tract stones treated by flexible negative pressure suction sheath-assisted flexible ureteroscopic holmium laser lithotripsy at Jieyang Minimally Invasive Surgical Hospital from September 2022 to December 2022. During the surgery, 11 F or 12 F flexible negative pressure suction ureteral access sheath were used. The Y-shaped interface outside the body was connected to the negative pressure suction device, and the head end was placed in the renal pelvis and calyx. Under the guidance of flexible ureteroscopy, it was close to the target stone, and sucked out the gravel while crushing the stone until the stone was cleared. After surgery, the 5 F double J tube was routinely retained for 2-4 weeks. Review CT or abdominal plain film on the first day 1-3 months after surgery. The surgical time, stone clearance rate, and incidence of intraoperative and postoperative complications were analyzed.

The success rate of one-time sheathing in 128 patients was 97.7%. The surgical time was 35-120 min with an average of (78±27) min; The average postoperative hospitalization time was (2.7±1.8) d. The stone clearance rate was 94.5%(121/128) after 1-3 months of postoperative follow-up. There was fever in 4 cases, bright red hematuria with blood clots in 1 case after operations, and no other serious complications occurred. The incidence of complications was 3.9%, and all patients were cured.

Flexible negative pressure suction sheath-assisted ureteroscopic holmium laser lithotripsy is safe and effective in the treatment of upper urinary tract stones.