gms | German Medical Science

76th Annual Meeting of the German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

04.05. - 08.05.2005, Erfurt

Evaluation of the coagulationvolumes of new developed, resterilizable, monopolar radiofrequency applicators in vitro

Meeting Abstract

  • corresponding author Lars Ingo Fleischer - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Mannheim, Mannheim
  • Kerstin Huber - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Mannheim, Mannheim
  • Nicolas Hammerschmitt - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Mannheim, Mannheim
  • Joachim Maurer - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Mannheim, Mannheim
  • Karl Hörmann - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Mannheim, Mannheim

Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. 76. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie e.V.. Erfurt, 04.-08.05.2005. Düsseldorf, Köln: German Medical Science; 2005. Doc05hno438

The electronic version of this article is the complete one and can be found online at: http://www.egms.de/en/meetings/hno2005/05hno234.shtml

Published: September 22, 2005

© 2005 Fleischer et al.
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Outline

Text

Introduction: The radiofrequencytherapy of hypertrophic soft palate, tongue base and nasal turbinates is a well established method. In this study a newly developed monopolar applicator (ERBE Elektromedizin, Tübingen) for soft palate, tongue base and nasal turbinates is presented and its effect on tissue in vitro.

Method: The monopolar radiofrequency applicators were tested under standarized and controlled conditions. The applicator`s effect on temperatured pork tongue (34°C) was measured with a variable application time. For this experiment the VIO 300D (ERBE Elektromedizin, Tübingen) delivered a constant power of 12 Watt with constant current and tension voltage. Each experiment contains 5 series for each time protocol for which the coagulation volume and the length of the lesion were measured.

Results: With the softpalate applicator the volume of the lesion was 0,057 cm³ after 10 seconds (s) of activation, after 15s it was 0,123 cm³, and after 20s 0,137 cm³. For the nasal turbinate applicator it was after10s 0,053 cm³, after 15s 0,084 cm³, after 20s 0,116 cm³, for the tongue base respectively 15s 0,048 cm ³, after 30s 0,17 cm³ and after 45s 0,23cm³

Discussion: These results are the basis for in vivo treatment to reduce side effects such as ulcus, abscess or neuronal damage.