Flexible ureteroscopy is characterized as first-line therapy for the treatment of renal stones < 2 cm in size. This involves passing a flexible endoscope into the renal pelvis through the urethra, bladder and ureter in a retrograde fashion. Holmium: YAG laser remains the preferred energy modality to subsequently break stones of this size into fragments small enough to remove or pass spontaneously through the ureter. Advances in the understanding of laser energy delivery have led to the recent commercialization of the "Moses Effect" - the creation of vapor bubbles/cavities between the laser fiber tip and the target through which laser energy can more efficiently travel. Lumenis was the first to optimize this laser phenomenon and market it as "Moses Technology" in their Lumenis Pulse P120H laser system. This system is already FDA approved through the 510K pathway and is commercially available. The purpose of this study is to evaluate the potential of Moses laser technology to reduce operative time compared to non-Moses settings for ureteroscopic treatment of nephrolithiasis.
Name: Holmium laser lithotripsy
Description: Total operative times between Moses holmium laser lithotripsy and non-Moses holmium laser lithotripsy in the ureteroscopic treatment of renal stones using a dusting techniqueMeasure: Operative Time Time: Beginning to end of procedure time
Description: Stone movement during laser lithotripsy will be recorded on video and graded on a Likert scale by blinded reviewersMeasure: Stone retropulsion Time: First 20 seconds of laser lithotripsy
There is one SNP
Lumenis was the first to optimize this laser phenomenon and market it as "Moses Technology" in their Lumenis Pulse P120H laser system. --- P120H ---