Er:YAG delamination of immersed biological membranes using sealed flexible hollow waveguides

A. M. Sagi-Dolev; Jacob Dror; Alexandra Inberg; J. R. Ferencz; Nathan I. Croitoru

doi:10.1117/12.237552

5 April 1996 Er:YAG delamination of immersed biological membranes using sealed flexible hollow waveguides

A. M. Sagi-Dolev, Jacob Dror, Alexandra Inberg, J. R. Ferencz, Nathan I. Croitoru

Proceedings Volume 2677, Biomedical Fiber Optics; (1996) https://doi.org/10.1117/12.237552
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

The radiation of Er-YAG laser ((lambda) equals 2.94 micrometer) gives selective interaction with tissues. The extinction in soft tissues is only a few micrometers and in hard tissues is of the order of hundreds of micrometers. This makes this type of laser very suitable for treatments in dentistry, orthopedy, or ophthalmology. Because the usual silica fibers are not transmitting the radiation at lambda equals 2.94 micrometer of this laser, many applications cannot be presently performed. Fused silica hollow fibers for Er-YAG radiation were developed in our laboratory and several possible applications in dentistry, orthopedy and ophthalmology were indicated. Hole opening and implantation preparation of teeth were experimented, using Er-YAG laser and hollow plastic waveguide delivery systems. Hole drilling in cow bones was demonstrated for applications in orthopedy. A new procedure of delivering Er-YAG radiation on fibrotic membranes of inner eggshell as a model of the membranes in eyes was developed employing silica hollow waveguides of 0.5 and 0.7 mm ID or a plastic waveguide of 1.0 mm ID. For this purpose waveguides with sealed distal tip were employed to enable us to approach the delivery system through liquid media near to the membrane. This experiment demonstrates the possibility of surgical applications in vitectomy in ophthalmology using Er-YAG laser and silica hollow waveguides.

Citation Download Citation

A. M. Sagi-Dolev, Jacob Dror, Alexandra Inberg, J. R. Ferencz, and Nathan I. Croitoru "Er:YAG delamination of immersed biological membranes using sealed flexible hollow waveguides", Proc. SPIE 2677, Biomedical Fiber Optics, (5 April 1996); https://doi.org/10.1117/12.237552

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KEYWORDS

Laser dentistry

Waveguides

Hollow waveguides

Silica

Tissues

Bone

Carbon dioxide lasers

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