Ultrashort pulse laser ossicular ablation and stapedotomy in cadaveric bone
✍ Scribed by William B. Armstrong; Joseph A. Neev; Luiz B. Da Silva; Alexander M. Rubenchik; Brent C. Stuart
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 212 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0196-8092
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Background and Objective
The purpose of this study was to evaluate the ablation of ossicular tissue using a 1,053 nm Ti:Sapphire chirped pulse amplifier laser system configured to deliver ultrashort pulses of 350 femtoseconds (fs) (3.5 × 10^−13^ seconds) in cadaver temporal bone.
Study Design/Materials and Methods
Ablation of the formalin‐fixed incus and stapes was performed using an ultrashort pulse laser (USPL) (0.4 mm beam diameter, pulse fluence of 2.0 J/cm^2^, and pulse repetition rate of 10 Hz). The ablation rate was measured using optical micrometry, and crater surface morphology examined using scanning electron microscopy.
Results
The laser produced precise bone ablation at a rate of 1.26 μm/pulse, with almost no evidence of thermal damage, and very little evidence of photomechanical injury.
Conclusions
Ultrashort pulse lasers may provide a useful clinical tool for otologic and skull base surgery, where precise hard tissue ablation is required adjacent to critical structures. Lasers Surg. Med. 30:216‐220, 2002. © 2002 Wiley‐Liss, Inc.