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首页> 外文期刊>Neurosurgery >Water jet dissection in neurosurgery: experimental results in the porcine cadaveric brain.
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Water jet dissection in neurosurgery: experimental results in the porcine cadaveric brain.

机译：神经外科中的水射流解剖：在猪尸体脑中的实验结果。

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OBJECTIVE: Water jet dissection is currently under investigation as a new tool for use in neurosurgical procedures. The safety of this instrument has already been demonstrated. However, precise data demonstrating highly accurate tissue dissection in the brain in combination with vessel preservation are still missing. METHODS: In this study, 50 porcine cadaveric brains were dissected with the use of several nozzle types (80-150 in microm diameter, coherent straight or helically turned jet) and several levels of water jet pressure (1-40 bars). The dissection characteristics in various brain regions and the basilar artery were evaluated morphologically. RESULTS: The best results regarding reliable function, dissection accuracy, and the correlation of water jet pressure with dissection depth were obtained with the 120-microm Helix Hydro-Jet nozzle. An almost linear relationship of pressure increase with dissection depth was demonstrated. The dissection depth varied significantly up to threefold, depending on the area investigated (greatest resistance was in the brainstem, followed by hemispheres and then the cerebellum). Vessels including the basilar artery resisted pressure up to 15 bars in most cases, whereas the basilar artery was dissected significantly more often with higher pressure. CONCLUSION: The results indicate that 1) use of the water jet enables very precise and reliable brain parenchyma dissection with vessel preservation under conditions corresponding to the clinical situation, and 2) the nozzle type and water jet pressure must be selected carefully according to the brain area and tissue targeted. This study provides the morphological basis for further research with the use of the water jet technique in the brain. The water jet's characteristics may make this device a useful addition to the neurosurgical armamentarium.
机译：目的：水射流解剖目前正在研究中，作为一种用于神经外科手术的新工具。该仪器的安全性已得到证明。但是，仍然缺少显示大脑中高度精确的组织解剖结合血管保存的精确数据。方法：在这项研究中，使用几种喷嘴类型（微米直径80-150，连贯的直线或螺旋形旋转射流）和几种水平的水射流压力（1-40巴）解剖了50个猪尸体脑。形态学评价了各个大脑区域和基底动脉的解剖特征。结果：使用120微米Helix Hydro-Jet喷嘴可获得关于可靠功能，解剖精度和水射流压力与解剖深度的相关性的最佳结果。证实了压力增加与解剖深度的线性关系。解剖深度的变化幅度最大可达三倍，具体取决于所研究的区域（最大阻力位于脑干，其次是半球，然后是小脑）。在大多数情况下，包括基底动脉在内的血管最多可承受15 bar的压力，而在较高压力下，基底动脉的解剖频率更高。结论：结果表明：1）使用喷水器可以在与临床情况相对应的条件下进行非常精确和可靠的脑实质解剖，并保留血管，并且2）必须根据大脑谨慎选择喷嘴类型和喷水压力区域和目标组织。这项研究为在脑中使用水刀技术的进一步研究提供了形态学基础。水刀的特性可能使该设备成为神经外科武器库的有用补充。

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