动脉瘤夹的耐久性：亚沙吉尔（Yaşargil）和斯佩茨勒（Spetzler）钛制动脉瘤夹的机械耐久性
Endurance of aneurysm clips: mechanical endurance of Yaşargil and Spetzler titanium aneurysm clips.
作者信息
Papadopoulos Marios C, Apok Vinothini, Mitchell Frederick T, Turner David P, Gooding Adrian, Norris John
机构信息
Department of Neurosurgery, Hurstwood Park Neurological Centre, Princess Royal Hospital, Haywards Heath, West Sussex, England, U.K.
出版信息
Neurosurgery. 2004 Apr;54(4):966-70; discussion 970-2. doi: 10.1227/01.neu.0000116140.53925.03.
OBJECTIVE
To determine whether repeated use weakens titanium aneurysm clips, making them unsafe for clinical use.
METHODS
Nine Yaşargil (titanium alloy) and five Spetzler (pure titanium) clips were subjected to clinically relevant maneuvers, and the effects on the closing force were assessed. Clips were considered unsafe if 1) the blades crossed, 2) the clips failed to close completely, or 3) the blood pressure could open them.
RESULTS
Yaşargil and Spetzler clips significantly (P < 0.01 for both) weakened, by 18.9% and 26.1%, respectively, after 10 minutes of sustained maximal opening. After 100 open-close cycles, Spetzler clips showed no change in closing force, but the closing force of Yaşargil clips decreased significantly (P < 0.01), by a further 12.0%.
CONCLUSION
Repeated use weakens Spetzler and Yaşargil clips. All Spetzler and all but one Yaşargil clips were deemed safe for clinical use at the end of the experiments.
目的
确定重复使用是否会削弱钛制动脉瘤夹，使其在临床使用中不安全。
方法
对9个亚萨吉尔（钛合金）夹和5个斯佩茨勒（纯钛）夹进行临床相关操作，并评估对夹闭力的影响。如果出现以下情况，则认为夹子不安全：1）夹臂交叉；2）夹子未能完全闭合；3）血压能将其打开。
结果
持续最大程度打开10分钟后，亚萨吉尔夹和斯佩茨勒夹均显著削弱（两者P均<0.01），分别削弱了18.9%和26.1%。经过100次开合循环后，斯佩茨勒夹的夹闭力无变化，但亚萨吉尔夹的夹闭力显著下降（P<0.01），又下降了12.0%。
结论
重复使用会削弱斯佩茨勒夹和亚萨吉尔夹。实验结束时，所有斯佩茨勒夹以及除一个之外的所有亚萨吉尔夹在临床使用中被认为是安全的。
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