Share Email Print

Proceedings Paper

Flexible CO2 laser waveguide: a comparison of tracheal resection dosimetry and histology with the rigid waveguide
Author(s): Christopher L. Slack; Michail M. Pankratov; Donald F. Perrault; Stanley M. Shapshay; H. Thomas Aretz
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The CO2 laser has been limited in its application within the tracheobronchial tree by its lack of a fiber delivery system. Recently a new product has been marketed, Luxar's flexible CO2 laser waveguide or FlexiguideTM, a spin-off of the presently used rigid waveguide or MicroguideTM. The study was undertaken so as to delineate the properties and thus the usefulness of this new product which promised an increased ease of delivery of the CO2 laser wavelength. We compared the flexiguide with its rigid counterpart along two parameters. Specifically, we determined the total energy necessary to endoscopically resect bovine tracheal rings with each guide and then examined the histologic crater characteristics of each guide at a given energy setting. In so doing we endeavored to see if the experience of the surgeon with the microguide could be translated to the use of the flexiguide. We found the flexiguide to require a greater total energy than the microguide in the continuous wave (cw) and chopped pulse (cp) operational modes p < 0.01. There was, however, no demonstrated difference in required energy in the superpulse (sp) operational mode. Preliminary histologic evidence when measuring such indices as crater depth, crater width, and shoulder width thermal damage seem to suggest that the flexiguide is less efficient at tissue ablation than its rigid counterpart at the same given energy. It also appears to cause a greater degree of associated thermal injury.

Paper Details

Date Published: 1 July 1993
PDF: 5 pages
Proc. SPIE 1876, Lasers in Otolaryngology, Dermatology, and Tissue Welding, (1 July 1993); doi: 10.1117/12.147011
Show Author Affiliations
Christopher L. Slack, Lahey Clinic Medical Ctr. (United States)
Michail M. Pankratov, Lahey Clinic Medical Ctr. (United States)
Donald F. Perrault, Lahey Clinic Medical Ctr. (United States)
Stanley M. Shapshay, Lahey Clinic Medical Ctr. (United States)
H. Thomas Aretz, New England Deaconness Hospital (United States)

Published in SPIE Proceedings Vol. 1876:
Lasers in Otolaryngology, Dermatology, and Tissue Welding
R. Rox Anderson; Lawrence S. Bass; Stanley M. Shapshay; John V. White; Rodney A. White, Editor(s)

© SPIE. Terms of Use
Back to Top