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Proceedings Paper

Skin resurfacing using an ultrasonic surgical aspirator
Author(s): Kate Lawes; Sharon L. Thomsen; Kathy Nolan; Jan Carr; Jenifer S. Kennedy
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Paper Abstract

The ultrasonic aspirator is essentially a vibrating tip whose ultrasonic frequencies fragment soft tissues, before aspirating it away from the surgical field. In the case of skin, the softer epidermis absorbs the vibrating tip's impact force so as to fragment it, whereas the more elastic and collagenous dermis reflects it. Understanding this, a chronic study to compare a skin resurfacing laser (Coherent, Palo Alto, CA) and an ultrasonic surgical aspirator (CUSA) (Valleylab Inc., Boulder, CO) as a skin resurfacing tool was performed using an in-vivo pigmented porcine model. Gross and histopathologic evaluations were made of the lesions removed at 0, 1, 3, 6, 11, 21, and 56 days post procedure. The laser parameters utilized constant power (60 W) and spot size but the number of passes was varied from 1 to 4 passes. This simulated typical minimal to maximal clinical laser treatments. CUSA parameters were then chosen so as to imitate the various laser passes. On sacrifice gross evaluations showed similar levels of healing, using lesion color and scab formation as the method of evaluation. Histological analysis showed evidence of thermal effects with both devices and that some but not all CUSA settings were comparable to the laser. In short, ultrasonic technology may have the potential to provide a controlled method of selectively removing the epidermal skin layer during resurfacing.

Paper Details

Date Published: 1 July 1998
PDF: 8 pages
Proc. SPIE 3245, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VIII, (1 July 1998); doi: 10.1117/12.312326
Show Author Affiliations
Kate Lawes, Valleylab Inc. (United States)
Sharon L. Thomsen, Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Kathy Nolan, Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Jan Carr, Valleylab Inc. (United States)
Jenifer S. Kennedy, Valleylab Inc. (United States)


Published in SPIE Proceedings Vol. 3245:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VIII
Graham M. Watson; Harvey Lui; Lou Reinisch; Penny J. Smalley; Kenneth Eugene Bartels; R. Rox Anderson; Lawrence S. Bass; Kenneth Eugene Bartels; C. Gaelyn Garrett; Lloyd P. Tate; Sharon L. Thomsen; Reza S. Malek; Aaron P. Perlmutter; R. Rox Anderson; Lawrence S. Bass; C. Gaelyn Garrett; Kenton W. Gregory; Harvey Lui; Reza S. Malek; Aaron P. Perlmutter; Lou Reinisch; Penny J. Smalley; Lloyd P. Tate; Sharon L. Thomsen; Graham M. Watson, Editor(s)

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