Dujovny M, Kossovsky N, Kossowsky R, Perlin A, Segal R, Diaz F G, Ausman J I
Neurosurgery. 1984 Mar;14(3):257-67. doi: 10.1227/00006123-198403000-00001.
A properly functioning aneurysm clip is of paramount importance in the surgical ablation of intracranial aneurysms. An appropriate match between the closing force needed to ablate an aneurysm and the force exerted by the aneurysm clip must be achieved. In this study, the opening and closing forces exerted by several commonly used aneurysm clips were tested. There was a strong correlation between the classification of the clips, according to the Dujovny system, and their mechanical behavior. Minimal variability among different lots of the same clip type and minimal hysteresis were generally exhibited by the alpha mobile fulcrum class clips, such as the Yasargil, Vari-Angle McFadden, Scoville, and Mayfield clips. Significant exceptions included several types of Mayfield and Drake clips. In contrast, pivot class clips generally showed twice as much lot variability among different lots, as well as a significant amount of hysteresis. Clips of this class include the Vari-Angle, Heifetz, and Pivot clips. Because significant variations in clip force exist and because several other factors can compound these differences, it is suggested that aneurysm clips be individually tested for their closing forces before they are used in an operation.
在颅内动脉瘤的手术切除中，功能正常的动脉瘤夹至关重要。必须使切除动脉瘤所需的闭合力与动脉瘤夹施加的力达到适当匹配。在本研究中，测试了几种常用动脉瘤夹的开合力量。根据杜乔夫尼系统对夹子进行的分类与其力学行为之间存在很强的相关性。α活动支点类夹子，如雅萨吉尔夹、可变角度麦克法登夹、斯科维尔夹和梅菲尔德夹，通常在同一夹子类型的不同批次间表现出最小的变异性和最小的滞后现象。显著的例外包括几种梅菲尔德夹和德雷克夹。相比之下，枢轴类夹子通常在不同批次间表现出两倍的批次变异性，以及大量的滞后现象。此类夹子包括可变角度夹、海费茨夹和枢轴夹。由于夹子力量存在显著差异，且其他几个因素会使这些差异更加复杂，因此建议在手术中使用动脉瘤夹之前，对其闭合力进行单独测试。
