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Differences in Postoperative Symptoms With Four Ureteral Stents

Randomized Clinical Trial Evaluating Differences in Postoperative Symptoms With 6Fr Percuflex Ureteral Stents Versus 6Fr Tria Ureteral Stents Versus 4.8Fr Percuflex Ureteral Stents Versus 4.8Fr Tria Ureteral Stents After Laser Lithotripsy of Renal and Ureteral Stones

Who can join

Ages 18 to 89 · All sexes

Inclusion Criteria:

* Patients with renal or ureteral urinary stones who require endoscopic treatment and stent placement in the outpatient operating room.

Exclusion Criteria:

* Pregnant patients
* Patients with transplant kidneys
* Patients with irreversible coagulopathy
* Patients with known ureteral stricture disease
* Non-English speaking, vulnerable patients such as lacking of decision-making capability, prisoner, adult unable to consent, will not be enrolled.
* Patients with planned staged procedures.
* Patients who have stent placed before surgery.

About the study

This is a prospective randomized controlled trial designed to assess the differences in postoperative symptoms related to placement of a 6Fr Percuflex ureteral stents, 6Fr Tria ureteral stents, 4.8Fr Percuflex ureteral stents, and 4.8Fr Tria ureteral stents after ureteroscopy with laser lithotripsy for treatment of upper tract urinary stones. 272 participants will be enrolled and will be on study for up to approximately 10 weeks.

What is being tested

• 6Fr Percuflex ureteral stents (device)
• 6Fr Tria ureteral stents (device)
• 4.8Fr Tria ureteral stents (device)
• 4.8Fr Percuflex ureteral stents (device)

Sponsor: University of Wisconsin, Madison · Participants: 272 · Started: Mar 21, 2024

Contact the study team

• Shuang Li · Phone: 608.263.8336

Official record on ClinicalTrials.gov — NCT06083051

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.