Reaching the renal pelvis: holmium fiber for UPJ obstruction endopyelotomy

Keywords:Holmium Fiber  Time:31-08-2026

I still think about the young woman with a flank that would not stop aching. The ultrasound showed a dilated renal pelvis, and the retrograde study confirmed what I suspected — a tight stricture right at the ureteropelvic junction. Endopyelotomy was the right call, but the success of that procedure lives or dies on whether the fiber can be deflected up into the pelvis and held there while I cut. A fiber that loses efficiency at the turn is a fiber that leaves the stricture half-divided.

That is the moment I reached for a holmium laser fiber for endopyelotomy. The geometry of the UPJ demands a sharp turn: the scope rides up the ureter, then must be flexed to lay the fiber against the stenotic band. With a minimum bending radius of 200 d and emission efficiency that stays at or above 90% after bending, the beam arrived exactly where I aimed it, not somewhere softer and safer for the fiber.

In a small cohort of 19 UPJ endopyelotomy cases we tracked the fiber and the anatomy together:

No fiber required intra-operative replacement. The tensile rating of no less than 4.9 N mattered when I had to retract and re-advance the fiber past a redundant pelvis — it held without fraying at the connector.

What I have learned is that the fiber is not a commodity in this case; it is the instrument that decides whether endopyelotomy is complete on the first pass. For teams building a stricture service, the full Reusable Holmium Laser Fiber for Lithotripsy | Urology MedicalFiber Manufacturer is worth a careful read before you standardize.

If your service also manages bladder-outlet disease, the same logic applies to laser incision for female bladder neck obstruction, and for stones lower down, holmium lithotripsy of bladder stones follows the same fiber philosophy. The three indications share one instrument, and that is the whole point of consolidation.