History of Diode lasers in the biolitec group - Medical...
Transcript of History of Diode lasers in the biolitec group - Medical...
History of Diode lasers in the biolitec group
2000-2005
Further
wavelengths like
940 und 980nm*
established 1999
First use of
Lasers @
810nm for
EVLT
2007
1470nm
Ceralas E
* Portfolio biolitec
2013
1470nm+
980nm
Leonardo
DUAL
Why 1470nm and 980nm ?
810-980nm are absorbed in the first instance by hemoglobine (HbO2)
whereas longer wavelenth like 1470nm are dominantly absorbed by
intracellular water
Example 1: Absorption
coefficient for 1470nm
approximatelly 40 times
higher than 980
Example 2: Absorption
coefficient for 1470nm
approximatelly 400
times higher than
810nm
Better control on penetration depth using 1470nm for sensitive structures
Interdisciplinary use for: Leonardo DUAL 45
1470nm 980nm
Vessel surgery
Trunk (GSV,SSV) X Tributaries X Perforators X Recorrences X
Proctology
Hemorrhoids X X Anal fistula X Sinus Pilonidalis X Condyloma X
ENT
Larynx X Endonasal Otology X Oro-Pharynx X
Dermatology
Spider naevi X
Telangiectases X Port wine stains x Lentigo X X
Hemangioma X
Warts X
Radiation pattern ELVeS ® Radial Fiber for use with 1470nm only
Radial emitting fiber tip for a
unique and homogenous energy
delivery directly to the vein wall
avoiding perforation and minimising
complications and side effects
Allowing perfect positioning of the laser beam
within the anatomy, exactly where you decide
to start the closure
Atraumatic fiber tip, marking lines and highest
US visibility for easy and safe positioning and
handling
ELVeS® Radial Bare Fiber; 600µm flat tip
homogenous, circular (radial) energy delivery and
photo-thermal demage with temperaturs of 100-
120C°
Absorption in blood, energy transfer via cooking
blood and hot fibre tip effect, diffuse thermal
damage
~600-800 C°
Why Radial at all?
Power: 6 W@1470nm
v=1mm/s
LEED: 60 J/cm
Tmax : 100 °C ± 10 °C
tissue sensations:
Protein: Tprot > 60°C
Collagen: Tcoll > 80°C
Temperature inside vein @ radial fiber tip
Comment: Bare Fiber, Tmax: 700-800°C ± 10 @ fiber tip (carbonized hot tip)
Radial emitting laser fibre with energy
subdevided into two rings:
ELVeS 2ring™
Soft illumination also for biggest veins
ELVeS Radial 2ring ™ und ELVeS Radial Slim ™
ELVeS Radial Slim™
Highest flexibility with easy access to
veins (also for recurrences)
A variety of vascular lesions can be treated using the
external handpiece including spider veins,
telangiectasias and hemangiomas found on the legs,
face, neck and chest using 980nm which has a
absorption peak in the near infra red
The result of epidermal cooling and
higher laser fluences increases efficacy, allows deeper
laser penetration, and minimizes treatment pain for larger
vessels.
Exact position of the individual laser pulse signals (optimal closure rate)
Precise Targeting of Spiders
The light of a 980 nm wavelength ensures
precise targeting for spider veins due to its:
• Effective penetration depth
• Optimal absorption by hemoglobin
• Ideal absorption by water
• Minimal melanin absorption
when compared to other lasers
The Benefit:
• Safer and more effective treatment
• Treatment of darker skin types
Presentation by Dr. Julio Ferreira
„Laser in dermatology„
___________________________________________
1)
(Combination-therapy)
the laser treatment can be combined with the classic
sclerosation therapy. E.g. wider areas with heavily
braching lesions can be primary served by sclerosation
and therapy resistant lesions can be definetelly cured
with the pulsed diode laser.
Avoid side effects like blisters and scars by carefull
selection of the energy and use it only on non-tanned
patients.
2)
Complicated venous or mixed malformations can be
adressed by interstitial use of the laser fibre.