颅内动脉瘤弹簧圈栓塞术中微导管额外塑形的新技术：微导管塑形铸型
A Novel Technique for Microcatheter Additional Shaping During Intracranial Aneurysmal Coil Embolization: Microcatheter Shaping Cast.
作者信息
Ohshima Tomotaka, Kawaguchi Reo, Maejima Ryuya, Matsuo Naoki, Miyachi Shigeru
机构信息
Neuroendovascular Therapy Center, Aichi Medical University, Nagakute, Aichi, Japan.
Department of Neurosurgery, Aichi Medical University, Nagakute, Aichi, Japan.
出版信息
Asian J Neurosurg. 2019 Jul-Sep;14(3):759-761. doi: 10.4103/ajns.AJNS_130_19.
BACKGROUND
When a shaping mandrel is inserted into the tip of a preshaped microcatheter, the existing curve becomes uncertain because the tip is straightened by the inner mandrel. Therefore, we developed a way to perform microcatheter shaping by means of an external cast, which we named "microcatheter shaping cast."
TECHNIQUES
A shaping mandrel attached to a microcatheter was used and coiled 4-5 times around a metallic introducer, which was attached using a microguidewire. Then, a stent-like handmade cast was prepared. After the microcatheter tip was inserted into the cast, it was manually bent according to the aneurysmal shape and size. The tip and cast were heated with a hot air gun. We evaluated the relationship between degrees of bending and heating time to achieve appropriate right-angled shaping memory.
CONCLUSIONS
The presented microcatheter shaping method should be more useful than conventional internal shaping, especially in cases that require an additional microcatheter shaping or reshaping during aneurysmal coil embolization.
背景
当将塑形心轴插入预塑形微导管的尖端时，由于内部心轴使尖端变直，现有的弯曲度变得不确定。因此，我们开发了一种通过外部铸型进行微导管塑形的方法，我们将其命名为“微导管塑形铸型”。
技术
使用连接到微导管的塑形心轴，并围绕金属导入器盘绕4至5次，该金属导入器通过微导丝连接。然后，制备一个支架状的手工铸型。将微导管尖端插入铸型后，根据动脉瘤的形状和大小手动弯曲。用热风枪加热尖端和铸型。我们评估了弯曲度与加热时间之间的关系，以实现适当的直角塑形记忆。
结论
所提出的微导管塑形方法应比传统的内部塑形更有用，特别是在动脉瘤弹簧圈栓塞过程中需要额外的微导管塑形或重新塑形的情况下。
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