SIDE-FIRING FIBER DEVICE FOR UNDERWATER TISSUE ABLATION WITH HO:YAG AND ER:YAG LASER RADIATION

被引：16

作者：

Foehn, Oliver ^{[1
]}

Pratisto, Hans S. ^{[1
]}

Koenz, Flurin ^{[1
]}

Ith, Michael ^{[1
]}

Altermatt, Hans J. ^{[2
]}

Frenz, Martin ^{[1
]}

Weber, Heinz P. ^{[1
]}

机构：

[1] Univ Bern, Inst Appl Phys, CH-3012 Bern, Switzerland

[2] Univ Bern, Inst Pathol, CH-3012 Bern, Switzerland

来源：

JOURNAL OF BIOMEDICAL OPTICS | 1998年 / 3卷 / 01期

关键词：

pulsed infrared laser; arthroscopic surgery; cavitation; vapor bubble; acoustic transient;

D O I：

10.1117/1.429868

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A side-firing fiber device for arthroscopic Ho:YAG (lambda = 2.12 mu m) and Er:YAG (lambda = 2.94 mu m) laser applications was designed and constructed. The fiber delivery instrument consisted of a zirconium fluoride (ZrF4) fiber equipped with a coaxially mounted short end-piece of low OH- quartz fiber polished at an angle of 30 deg. The dynamics and depth of the vapor channel in water and the amplitude of pressure transients associated with the collapse of the vapor channel were measured for pulse energies up to 1 J (Ho:YAG) and 200 mJ for the Er: YAG laser (pulse duration tau = 400 mu s), respectively. To assess the feasibility of the side-firing fiber delivery instrument, the ablation efficiency and laser-induced damage in poly(acylamide) and meniscal tissue were determined after Ho:YAG and Er:YAG laser ablation. (C) 1998 Society of Photo-Optical Instrumentation Engineers.

引用

页码：112 / 122

页数：11

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