MultiPulse TFL
The universal laser solution in urology
The MultiPulse TFL is a next-generation thulium fiber laser for precise endourological applications – from lithotripsy to soft tissue procedures. With the currently highest peak pulse power on the market at 1,378 W*, the VEGA Effect® enables more stable, conical cavitation and therefore optimal energy transmission.
Advanced pulse settings and precise energy control fully leverage the strengths of TFL technology, enabling exceptional stone dusting performance with improved efficiency even in hard stones and reduced retropulsion. In soft tissue applications, the CW mode supports controlled dissection with excellent hemostasis**.
*Based on published information until 01/26.
**Based on internal testing.
1,378 W PEAK POWER
VEGA EFFECT®
Smarter, more effective energy delivery
EXCELLING IN SOFT TISSUE & STONE TREATMENT
with the VEGA Effect®
DIRECT COOLING
Lower power consumption
OPTIMIZED CONTROL
Eight pulse durations for tailored performance
- Laser Source: Thulium Fiber Laser
- Wavelength: 1,940 nm
- Emission Mode: Continuous | Pulsed
- Power: up to 200 W (CW)
- Pulse Energy: up to 6 J
- Repetition Rate: CW to 2,500 Hz
- Pulse Duration: 0.1 – 12 ms in single pulse mode | unlimited in CW mode
- Device Accessories: Bare fibers (reusable and single use) available in following diameters:
200, 272, 365, 400, 550, 600, 800, 1,000 μm
FDA 510(k) cleared under K253100
The MultiPulse TFL takes the physical capabilities of thulium fiber laser technology to a new level. Conventional TFL pulses typically generate only short-lived and relatively small vapor bubbles, which limits both the reach and stability of energy transmission in stone and soft tissue applications.
In contrast, the VEGA Effect® produces a more stable and longer-lasting conical cavitation. This allows energy to be delivered more precisely to the stone or target tissue, while improving control throughout the procedure. The more stable vapor channel formation also supports higher efficiency combined with greater precision in energy delivery.
Key features:
- Larger, longer-lasting cavitation effect
- Improved energy transmission and procedural control
- Optimized energy absorption through stable conical cavitation
- Available for lithotripsy and soft tissue applications
In lithotripsy, the VEGA Effect® enables:
- Finer stone dusting with fewer residual fragments and reduced retropulsion
- More precise energy delivery even in anatomically narrow spaces
Comparison of Traditional TFL (1) and the MultiPulse TFL featuring the VEGA Effect (2) in Lithotripsy
In soft tissue treatment, the VEGA Effect® brings:
- Precise cutting with controlled coagulation
- Reduced carbonization
- Reduced risk of necrosis and collateral damage
Impact of the VEGA Effect® on Thermal Penetration
HIGH-PEAK TFL ENABLES SUSTAINED CONICAL CAVITATION WITH LOWER RETROPULSION IN STONE LITHOTRIPSY: EX VIVO ULTRA-HIGH-SPEED IMAGING VERSUS BASELINE TFL AND LONG-PULSE/LOW-PEAK HO:YA
Kanne M.C., Schmitz U., Luximun Y., Contreras P., Gerullis H.
INTRODUCTION & OBJECTIVES
Laser-induced cavitation at the fiber tip governs how efficiently optical energy interacts with the stone and how much the stone is displaced. A published mechanistic model predicts that Thulium Fiber Laser (TFL) pulses can form elongated, conical “channel-like ”bubbles, whereas Ho:YAG more often yields rounded ones. We investigated whether a next-generation high-peak TFL (same wavelength/beam geometry, higher peak power) produces more sustained conical cavitation than baseline TFL or long-pulse/low-peak Ho:YAG, and whether this correlates with reduced stone motion in a standardized bench model.
MATERIALS & METHODS
In a degassed water tank we synchronized ultra-high-speed imaging (≤ 500 kfps) with photodiode-tracked laser pulses from 3different energy-sources: high-peak TFL (1kW peak), baseline TFL, and long-pulse/low-peak Ho:YAG. Outcomes included bubble length, width, shape-index, nucleation time, vapor-phase duration, forward-tip advance and stone displacement. Model predictions derived a priori from measured optical power, absorption, and beam waist were compared with observed image sequences.
RESULTS
At equal pulse energy, high-peak TFL produced earlier nucleation, longer continuous vaporization, and a distinctly conical bubble than baseline TFL. Tip-tracking showed a longer, sustained vapor channel per pulse and markedly lower stone displacement. Long-pulse/low-peak Ho:YAG created only short, blunt elongation with shape index≈1 and limited channel persistence. The observed timings and geometries were consistent with model predictions of phase-transition-dominated dynamics.
CONCLUSIONS
Next-generation high-peak TFL produces more sustained conical cavitation than baseline TFL or Ho:YAG. Ultra-high-speed imaging confirms a predictive link between pulse peak power and cavitation morphology. Increasing peak power within TFL stabilizes aconical, channel-forming vapor core that minimizes over-expansion and subsequent collapse, leading to less retropulsion compared to baseline TFL and Ho:YAG at identical energy. These findings provide a mechanistic surrogate for improved energy coupling to the stone while avoiding retropulsion. This physical advantage is expected to translate into more stable working conditions during stone lithotripsy; prospective clinical trials however are needed to confirm these findings.
The MultiPulse TFL covers the following treatments:
Prostate enucleation (BPH treatment) with ThuLEP procedure | Urinary lithotripsy |
Ureteral Strictures
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