Title: In-Office Laser Treatment of Recurrent Respiratory Papilloma
1In-Office Laser Treatment of Recurrent
Respiratory Papilloma
- S. Carter Wright, Jr. MD
- Center for Voice and Swallowing Disorders
- Wake Forest University Health Sciences
- Winston Salem, NC 27127
2Light Absorption in Tissue
ErYAG
PDL
Melanin
CO2
Water
Hemoglobin
Oxyhemoglobin
Absorption Coefficient (per centimeter)
1.0
0.2
10
20
3.0
Wavelength (Microns)
Source Brown, Dale NdYAG Laser, Laryngoscope
110 May 2000 p.855
3Absorption Length
Argon KTP
CO2
NdYAG
Excimer
Er
Ho
0.0
1.0
Absorption Length (millimeters)
Pigmented tissue
2.0
CO2
0.00
3.0
0.01
0.02
4.0
1.0
0.2
10
20
3.0
Wavelength (Microns)
Source Brown, Dale NdYAG Laser, Laryngoscope
110 May 2000 p.855
4Advantages of CO2 laser
- Minimal depth of penetration
- Highly absorbed in water
- Precise tissue handling
- Variable spot size makes for an excellent cutting
and ablation tool - Limited collateral damage
- What you see is what you get
5A new surgical tool
OmniGuide Fiber
CO2 light propagates through hollow core
Outer Cladding
- Fiber Technology
- Carefully selected materials
- Unique design and manufacturing capability
- MIT Patents (16 issued, gt12 pending)
- Current fiber OD 1.5mm, spot size 450 um to 1mm
Hollow Core
Photonic Bandgap Reflector
Ref B.Temelkuran, S.D.Hart, G.Benoit,
J.D.Joannopoulos, and Y.Fink, Nature 420, 650
(2002).
6In-Office CO2 Laser at WFU
7(No Transcript)
8Tracheal Papilloma
9Laryngeal Papilloma