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Proceedings Paper

Er:YAG delamination of dense biological membranes using flexible hollow waveguides
Author(s): A. M. Sagi-Dolev; Jacob Dror; Alexandra Inberg; Nathan I. Croitoru
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Paper Abstract

Fused silica flexible hollow wave guides developed at TAU were used to deliver Er-YAG laser radiation to a biological membrane model. The model was composed of fibrotic (inner egg shell) membranes that were either brushed with or immersed in physiological saline solution. Waveguides used included fibers with an inner diameter of 0.7 mm and 0.5 mm. Membrane aperture size and fiber output power density were obtained. Results for the 0.5 mm waveguides yielded average apertures of 100 micrometer length at a power density of 5.35 W/cm2 and threshold fluence of 10 mJ/cm2 for exposed membranes and 35 mJ/cm2 for wet membranes. The results indicate that this waveguide can be used to cut dense membranes, finally, we have succeeded in delaminating immersed membranes using a sealed waveguide. These results show the applicability of using fused silica flexible hollow waveguides for Er-YAG surgical applications of dense membranes in aqueous surroundings such as vitrectomy and posterio-copsulectomy in ophthalmology, and possibly for procedures involving pleural membranes.

Paper Details

Date Published: 3 January 1995
PDF: 4 pages
Proc. SPIE 2631, Medical and Fiber Optic Sensors and Delivery Systems, (3 January 1995); doi: 10.1117/12.229179
Show Author Affiliations
A. M. Sagi-Dolev, Tel Aviv Univ. (Israel)
Jacob Dror, Tel Aviv Univ. (Israel)
Alexandra Inberg, Tel Aviv Univ. (Israel)
Nathan I. Croitoru, Tel Aviv Univ. (Israel)

Published in SPIE Proceedings Vol. 2631:
Medical and Fiber Optic Sensors and Delivery Systems
Nathan I. Croitoru; Mitsunobu Miyagi; Guillermo Orellana; Annamaria Verga Scheggi; Henricus J. C. M. Sterenborg, Editor(s)

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