Asian Journal of Neurosurgery

ORIGINAL ARTICLE
Year
: 2019  |  Volume : 14  |  Issue : 3  |  Page : 759--761

A novel technique for microcatheter additional shaping during intracranial aneurysmal coil embolization: Microcatheter shaping cast


Tomotaka Ohshima1, Reo Kawaguchi2, Ryuya Maejima2, Naoki Matsuo2, Shigeru Miyachi3 
1 Neuroendovascular Therapy Center, Aichi Medical University, Nagakute, Aichi, Japan
2 Department of Neurosurgery, Aichi Medical University, Nagakute, Aichi, Japan
3 Neuroendovascular Therapy Center, Aichi Medical University; Department of Neurosurgery, Aichi Medical University, Nagakute, Aichi, Japan

Correspondence Address:
Tomotaka Ohshima
Neuroendovascular Therapy Center, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195
Japan

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.


How to cite this article:
Ohshima T, Kawaguchi R, Maejima R, Matsuo N, Miyachi S. A novel technique for microcatheter additional shaping during intracranial aneurysmal coil embolization: Microcatheter shaping cast.Asian J Neurosurg 2019;14:759-761


How to cite this URL:
Ohshima T, Kawaguchi R, Maejima R, Matsuo N, Miyachi S. A novel technique for microcatheter additional shaping during intracranial aneurysmal coil embolization: Microcatheter shaping cast. Asian J Neurosurg [serial online] 2019 [cited 2019 Dec 16 ];14:759-761
Available from: http://www.asianjns.org/article.asp?issn=1793-5482;year=2019;volume=14;issue=3;spage=759;epage=761;aulast=Ohshima;type=0