News — laser fiber
All Holmium Laser Fibers are the Same, Right? Part 8: Moses and the Stones
2100nm AccuFlex AccuTrac ACMI laser fiber calculase dornier EndoBeam Flexiva Holmium Fiber Holmium Laser holmium laser fiber karl storz laser fiber Laser Lithotripsy Lasersafe litho laser Lumenis medilase medilase H20 OmniPulse Optifiber ProFlex ProFlex LLF ProGlide richard wolf Scopesafe Slimline stonelight SureFlex Thulium thulium laser thulium laser fiber Trimedyne yellowstone
Losses due to boiling water in surgery can be much larger than most surgeons appreciate and, in some cases these losses approach the total pulse energy, rendering laser surgery ineffective. It is important to know the variables affecting boiling losses and how to negotiate around these losses to optimize efficacy in laser lithotripsy.
All Holmium Laser Fibers are the Same, Right? Part 7: Cladding Modes
AccuTrac ACMI laser fiber calculase EndoBeam Flexiva Holmium Fiber Holmium Laser holmium laser fiber karl storz laser fiber Laser Lithotripsy Lasersafe litho laser Lumenis medilase medilase H20 Optifiber ProFlex ProFlex LLF ProGlide quanta laser richard wolf Scopesafe SideLite Single Use LLF IFU stonelight SureFlex Thulium thulium laser thulium laser fiber Trimedyne yellowstone
All Holmium Laser Fibers are the Same, Right? Part 7: Cladding Modes Ignorance of reality yields solutions that function solely as fantasy. What are ‘Cladding Modes’? ‘Cladding modes’ are almost universally misunderstood as being light rays or modes of propagation that are contained solely within the fiber cladding. https://www.youtube.com/watch?v=I6yjDPo4AHg Snell’s law precludes the containment described in this video (Figure 1 is adapted from the video), a video that is representative of the majority of descriptions one finds for ‘cladding modes’ in the literature. Figure 1: Classic example of oversimplified and erroneous depiction of ‘cladding modes’ While it is possible to...
“All Holmium Laser Fibers are the Same, Right?” Part 6: Minding the Gap
2100nm ACMI laser fiber calculase EndoBeam Fiber Flexiva Holmium Fiber Holmium Laser holmium laser fiber karl storz Laser laser fiber Laser Lithotripsy Lasersafe litho laser Lumenis medilase medilase H20 OmniPulse Optifiber ProFlex ProFlex LLF quanta laser Scopesafe Slimline stonelight SureFlex Thulium thulium laser thulium laser fiber Trimedyne yellowstone
FIGURE 1: Fiber Sleeved with Quartz Ferrule The gap (FIG. 1) between the fiber and the quartz ferrule is a fundamental problem of quartz sleeved fibers because that gap harbors volatile and non-volatile contaminants from production or cleaning. These contaminants are inevitably vaporized and deposit on the blast shield or focusing optic or both. In extreme cases, thermal expansion of materials within the gap can fracture the fiber or the quartz sleeve. Fusing the fiber within the bore of the quartz ferrule eliminates the gap, but new issues arise from fusion. Centricity is typically worst case after fusion...
All Holmium Laser Fibers are the Same, Right? Pt.4 -- Fiber Design Evolution
AccuFlex AccuTrac ACMI laser fiber dornier EndoBeam Flexiva Holmium Fiber Holmium Laser holmium laser fiber laser fiber Laser Lithotripsy Lasersafe litho laser Lumenis medilase medilase H20 OmniPulse Optifiber ProFlex ProFlex LLF quanta laser richard wolf Scopesafe Slimline stonelight SureFlex thulium laser fiber Trimedyne yellowstone
Part 4: Fiber Design Evolution -- the early days as reflected in today's products First and foremost, for differentiation among holmium laser fibers, is the issue of fiber dimensions. Frankly, I am astonished at the lack of clarity or standardization in identifying fiber sizes within this industry. Almost all “200 micron” fibers are actually much larger than 200 microns; not as egregiously large as described in some of the urological literature, where total fiber diameters are reported as opposed to the fiber core diameters used by manufacturers, but definitely misleading to the point where incredulity dominates. I’ll have more on fiber sizes in...
All Holmium Laser Fibers are the Same, Right? Part 3: Pulsar HPC Introduction
AccuFlex AccuTrac ACMI laser fiber calculase EndoBeam Fiber Flexiva Holmium Fiber Holmium Laser holmium laser fiber karl storz laser fiber Laser Lithotripsy Lasersafe litho laser medilase medilase H20 OmniPulse Optifiber ProFlex ProFlex LLF ProGlide quanta laser richard wolf Scopesafe SideLite Slimline stonelight SureFlex thulium laser Trimedyne yellowstone
Before updating this entry, a reader asked a question about a statement I'd made about the flexibility of the Boston Scientific holmium fibers AccuMax™ and Flexiva™ that I answered in the updated Part 2 entry. I am leaving my answer to that question in this entry, for congruity. Pardon the redundancy. Q: ‘How do you know Boston’s AccuMax™ and Flexiva™ are stiffer than ProFlex 200 if, as you say, you’ve never seen one of Boston’s fibers?’ A: Updated answer -- we measured the glass OD of the Boston fibers and, as expected, it is 290 microns (242 microns x 1.2 CCDR). This...