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Thulium Fiber Laser (TFL) vs Thulio Pulsed Thulium:YAG (p-Tm:YAG)
Recruiting
Prospective Single-center Study Comparing Thulium Fiber Laser to Pulsed Thulium:YAG Laser in the Ureteroscopic Treatment of Nephrolithiasis
Who can join
Ages 18 and older · All sexes
Full eligibility criteria
Inclusion Criteria: * Solitary renal stone 7 to 20 mm in size or in the case of multiple stones the conglomerate diameter (additive maximal diameter of all stones on axial imaging of computed tomography) of 7-20 mm is required * Must be a suitable operative candidate for flexible ureteroscopy per American Urological Association guidelines * Must be able to give consent * Bilateral ureteroscopy will be permitted but only the first side (per surgeon discretion) will be included in the study * Surgeons participating in the study must be urological attending surgeons or fellows with subspecialty training in Endourology Exclusion Criteria: * Concomitant stones in the ureter * Prior ipsilateral upper urinary tract reconstructive procedures or history of ipsilateral ureteral stricture * Prior radiotherapy to the abdomen or pelvis * Neurogenic bladder or spinal cord injury * Pregnancy * Untreated UTI
About the study
This research study is being conducted to assess the ability and efficiency of two laser systems to break up kidney stones during ureteroscopy with laser lithotripsy for kidney stone treatment.
What is being tested
- Thulio pulsed Thulium:YAG (p-Tm:YAG) (device)
- Thulium Laser Fiber (TFL) (device)
Sponsor: University of California, San Diego · Participants: 50 · Started: Aug 1, 2024
Contact the study team
- Jade McDermott, BS · Phone: 858-777-9721
- Roger L Sur, MD · Phone: (858) 657-7876
Official record on ClinicalTrials.gov — NCT06721975
Locations in the U.S.
| California | University of California, San Diego, San Diego |
Conditions
From ClinicalTrials.gov, data retrieved Oct 2, 2026. Each study sets its own eligibility; the study team decides who can join.