7 May 1996 Combination of erbium and holmium laser radiation for tissue ablation
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Erbium lasers emitting at 2.94 micrometers and holmium lasers emitting at 2.1 micrometers are interesting tools for cutting, drilling, smoothing and welding of water containing tissues. The high absorption coefficient of water at these wavelengths leads to their good ablation efficiency with controlled thermally altered zones around the ablation sites. Combination of pulses with both wavelengths transmitted through one fiber were used to perform incisions in soft tissue and impacts in bone disks. Histological results and scanning electron microscope evaluations reveal the strong influence of the absorption coefficient on tissue effects, especially on the ablation efficiency and the zone of thermally damaged tissue. It is demonstrated that the combination of high ablation rates and deep coagulation zones can be achieved. The results indicate that this laser system can be considered as a first step towards a multi-functional medical instrument.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hans Surya Pratisto, Hans Surya Pratisto, Martin Frenz, Martin Frenz, Flurin Koenz, Flurin Koenz, Hans Joerg Altermatt, Hans Joerg Altermatt, Heinz P. Weber, Heinz P. Weber, } "Combination of erbium and holmium laser radiation for tissue ablation", Proc. SPIE 2681, Laser-Tissue Interaction VII, (7 May 1996); doi: 10.1117/12.239574; https://doi.org/10.1117/12.239574

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