MOSES™ pulse modulation technology versus conventional pulse delivery technology: the effect on irrigation fluid...

Area of Science:

• Urology
• Medical Devices
• Surgical Technology

Background:

• Flexible ureteroscopy (FURS) utilizes laser technology for stone treatment.
• Maintaining safe irrigation fluid temperature (IFT) is critical during FURS to prevent tissue damage.
• MOSES™ modulation technology offers an alternative to conventional pulse delivery for Ho:YAG lasers.

Purpose of the Study:

• To compare the effect of MOSES™ modulation technology versus conventional pulse delivery on IFT during FURS.
• To evaluate IFT under varying irrigation conditions (gravity and manual pump) and laser power settings (20W, 40W, 60W).

Main Methods:

• An in vivo porcine model was used to simulate FURS procedures.
• A thermocouple measured IFT within the upper calyceal system during Ho:YAG laser activation.
• Laser parameters were tested with both MOSES™ and conventional pulse delivery under gravity and manual pump irrigation.

Main Results:

• No significant difference in maximal IFT was observed between MOSES™ and conventional technology across tested power settings and irrigation methods.
• Under gravity irrigation, maximum IFT reached 66.4°C at highest power settings.
• Manual pump irrigation effectively maintained safe IFT even at high laser power settings (40W, 60W).

Conclusions:

• MOSES™ modulation technology does not significantly alter IFT compared to conventional pulse delivery during FURS.
• Manual pump irrigation is essential for ensuring thermal safety during high-power laser applications in FURS.
• Both technologies appear safe regarding IFT when appropriate irrigation techniques are employed.