High-power diffusing-tip fibers for interstitial photocoagulation

Edward L. Sinofsky; Norman Farr; Lincoln Baxter; William Weiler

doi:10.1117/12.275085

22 May 1997 High-power diffusing-tip fibers for interstitial photocoagulation

Edward L. Sinofsky, Norman Farr, Lincoln Baxter, William Weiler

Proceedings Volume 2970, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII; (1997) https://doi.org/10.1117/12.275085
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

A line of optical fiber based diffusing tips has been designed, developed, and tested that are capable of distributing tens of watts of cw laser power over lengths ranging from two millimeters to over 10 cm. The result is a flexible non-stick diffuser capable of coagulating large volumes of tissue in reasonably short exposures of 3 - 5 minutes. Sub-millimeter diameter devices have a distinct effect on reducing the force needed to insert the applicator interstitially into tissue. Utilizing our design approach, we have produced diffusers based on 200 micrometer core fiber that has delivered over 35 watts of Nd:YAG energy over diffusion lengths as short as 4 mm. These applicators are being tested for applications in oncology, cardiology, electrophysiology, urology and gynecology.

Citation Download Citation

Edward L. Sinofsky, Norman Farr, Lincoln Baxter, and William Weiler "High-power diffusing-tip fibers for interstitial photocoagulation", Proc. SPIE 2970, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII, (22 May 1997); https://doi.org/10.1117/12.275085

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