Ultrashort pulse laser ossicular ablation and stapedotomy in cadaveric bone

Ultrashort pulse laser ossicular ablation and stapedotomy in cadaveric bone

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/Material...

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Published in:Lasers in surgery and medicine Vol. 30; no. 3; pp. 216 - 220
Main Authors: Armstrong, William B., Neev, Joseph A., Da Silva, Luiz B., Rubenchik, Alexander M., C. Stuart, Brent
Format: Journal Article Conference Proceeding
Language:English
Published: New York Wiley Subscription Services, Inc., A Wiley Company 01-03-2002
Wiley-Liss
Subjects:
Biological and medical sciences
Cadaver
Ear Ossicles - surgery
femtosecond
hard tissue
Head and neck surgery. Maxillofacial surgery. Dental surgery. Orthodontics
Humans
Laser Therapy - adverse effects
Laser Therapy - methods
Medical sciences
otolaryngology
otosclerosis
stapes
Stapes Surgery - adverse effects
Stapes Surgery - methods
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Surgery of the ear, the auditive nerve and the facial nerve
Technology. Biomaterials. Equipments
Ti:Sapphire
Time Factors
Performance evaluation
Human
Scanning electron microscopy
Incus
Optical micrometer
Laser irradiation
Surface analysis
Stapes
Accuracy
Stapedectomy
Ultrashort pulse
Surgery
Ear
Dosimetry
Technique
Cadaver
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Summary: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/cm2, 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.
Bibliography:The Department of the Navy - No. N00014-90-0-0029
U.S. Department of Energy (by the Lawrence Livermore National Laboratory) - No. W-7405-ENG-48
istex:411BCE417DCA6852209276D5DFD48C597C007830
ArticleID:LSM10034
Presented at the Western Section of the American Laryngological, Rhinological and Otological Society Annual Meeting, La Costa, CA, January 5-7, 2001.
This article ia a US govenment work and, as such, is in the public domain in the United States of America.
ark:/67375/WNG-NP5T6LQV-7
Presented at the Western Section of the American Laryngological, Rhinological and Otological Society Annual Meeting, La Costa, CA, January 5–7, 2001.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0196-8092
1096-9101
DOI:10.1002/lsm.10034