CO2 laser ablation of external genital lesions with a SwiftLase flashscanner: treatment of extramammary Paget's disease of the vulva, penile condylomata, and other lesions

Eric J. Sacknoff M.D.; Jay Schweitzer; Michael Slatkine; Douglass S. Mead

doi:10.1117/12.209090

12 May 1995 CO₂ laser ablation of external genital lesions with a SwiftLase flashscanner: treatment of extramammary Paget's disease of the vulva, penile condylomata, and other lesions

Eric J. Sacknoff M.D., Jay Schweitzer, Michael Slatkine, Douglass S. Mead

Author Affiliations +

Proceedings Volume 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V; (1995) https://doi.org/10.1117/12.209090
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

The ability to vaporize extremely thin layers of epithelial tissue without any char and with minimal thermal necrosis is extremely advantageous in the treatment of superficial lesions of the external genitalia. We present a novel CO₂ laser `SwiftLase' flashscan technology capable of providing char free ablation of 3 mm diameter lesions with only 150 micron residual thermal necrosis depth at power level as low as 10 watts. These power levels are achievable with a small transportable CO₂ laser. The SwiftLaser is a miniature opto- mechanical scanner which homogeneously covers a 3 mm diameter surface with a 0.1 mm spot size focused beam within 0.1 seconds. The instantaneous beam's dwelling time is 1 millisecond. The instantaneous power density level at the focal point is higher than the threshold for char free ablation, thus providing a large char free ablation crater. Since depth of each ablated layer is 0.1 mm, the depth of treatment can be precisely controlled. The SwiftLaser technology has extensively and successfully been used in the last two years for the treatment of HPV in female lower tracts (Vulvectomy). The same technique may be performed with extramammary Paget's disease of the vulva, penile condylomata, and other epithelial disorders of the external genitalia without damage to surrounding healthy tissue. Technique and clinical results will be discussed.

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Eric J. Sacknoff M.D., Jay Schweitzer, Michael Slatkine, and Douglass S. Mead "CO₂ laser ablation of external genital lesions with a SwiftLase flashscanner: treatment of extramammary Paget's disease of the vulva, penile condylomata, and other lesions", Proc. SPIE 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V, (12 May 1995); https://doi.org/10.1117/12.209090

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KEYWORDS

Carbon dioxide lasers

Tissues

Laser ablation

Bladder

Biopsy

Laser tissue interaction

Lymphatic system

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