Luers Jan Christoffer, Petry-Schmelzer Jan Niklas, Hein Wolfgang G, Gostian Antoniu-Oreste, Hüttenbrink Karl-Bernd, Beutner Dirk
University of Cologne, Department of Otorhinolaryngology, Head and Neck Surgery, Germany.
University of Cologne, Department of Otorhinolaryngology, Head and Neck Surgery, Germany.
Auris Nasus Larynx. 2014 Feb;41(1):76-80. doi: 10.1016/j.anl.2013.04.013. Epub 2013 Jul 17.
Intraductal laser lithotripsy is a preferred method to fragment large, immobile intraglandular salivary stones. A number of different laser systems has been investigated for this purpose. It was our aim to study the effectiveness of a 980nm diode laser when fragmenting salivary stones in an experimental set up.
In an experimental set up we used a 980nm diode laser for the lithotripsy of 9 salivary stones. The temperature circle around the laser fibre tip was measured and stone remnants were chemically analysed for their composition.
The salivary stones had a mean diameter of 6.7mm×5.6mm×3.0mm. Laser fragmentation with the diode laser was successful at all stones. The temperature next to the salivary stone increased to around 30°C during the active lithotripsy with continuous rinsing (fluid temperature 21°C). At a distance of 2mm the temperature around the laser fibre's tip is reduced by already about 50%. The salivary stones mainly consisted of carbonate apatite, followed by β-calcium phosphate and other calcium phosphates.
The fragmentation of salivary stones with a 980nm diode laser is possible in principle. Under a continuous irrigation with a positioning of the laser fibre's tip at the centre of the stone, no relevant temperature increase in the vicinity of the stone occurs. However, before the laser is used in humans, in vivo experiments on animal material seem to be advisable.
导管内激光碎石术是破碎大的、固定不动的腺体内涎石的首选方法。为此已对多种不同的激光系统进行了研究。我们的目的是在实验装置中研究980nm二极管激光破碎涎石的有效性。
在实验装置中，我们使用980nm二极管激光对9颗涎石进行碎石术。测量激光光纤尖端周围的温度，并对结石残余物进行化学成分分析。
涎石的平均直径为6.7mm×5.6mm×3.0mm。使用二极管激光进行激光破碎对所有结石均成功。在持续冲洗（液体温度21°C）的主动碎石过程中，涎石旁的温度升至约30°C。在距离激光光纤尖端2mm处，温度已降低约50%。涎石主要由碳酸磷灰石组成，其次是β-磷酸钙和其他磷酸钙。
原则上，使用980nm二极管激光破碎涎石是可行的。在激光光纤尖端位于结石中心的情况下持续冲洗时，结石附近不会出现明显的温度升高。然而，在将该激光用于人体之前，对动物材料进行体内实验似乎是可取的。
