J Zenk1, U W Geisthoff, I Hamadi, H Iro. 1. Department of Otorhinolaryngology, Head and Neck Surgery, University of Saarland School of Medicine, D-66421 Homburg/Saar, Germany.
Abstract
BACKGROUND AND OBJECTIVE: Surgery of soft tissue, for example, of the tongue or the liver, requires a cutting and coagulating device. Therefore, a combined Ho:YAG/Nd:YAG laser providing the laser beam of both systems together in one bare fiber seems to be useful. STUDY DESIGN/ MATERIALS AND METHODS: We studied the effect of such a laser system in vitro on tongues of pigs. RESULTS: Combined application of both lasers results in vitro in a thicker coagulation zone in soft tissue (tongue). Tissue fragments possibly containing vital cells are sprinkled by the pulsed energy of the Ho:YAG laser up to a distance of 20 cm. CONCLUSION: Using the pulsed Ho:YAG laser for oncologic interventions seems to be problematic. Combined laser effect in vivo may result in better hemostasis. Copyright 1999 Wiley-Liss, Inc.
BACKGROUND AND OBJECTIVE: Surgery of soft tissue, for example, of the tongue or the liver, requires a cutting and coagulating device. Therefore, a combined Ho:YAG/Nd:YAG laser providing the laser beam of both systems together in one bare fiber seems to be useful. STUDY DESIGN/ MATERIALS AND METHODS: We studied the effect of such a laser system in vitro on tongues of pigs. RESULTS: Combined application of both lasers results in vitro in a thicker coagulation zone in soft tissue (tongue). Tissue fragments possibly containing vital cells are sprinkled by the pulsed energy of the Ho:YAG laser up to a distance of 20 cm. CONCLUSION: Using the pulsed Ho:YAG laser for oncologic interventions seems to be problematic. Combined laser effect in vivo may result in better hemostasis. Copyright 1999 Wiley-Liss, Inc.