抄録
Purpose: When intending balloon-/stent-assisted embolization of cerebral aneurysms using ≥8 Fr guiding and coaxial 6 Fr inner catheters, operations can be conducted more safely by inserting the inner catheter to a site proximal to the aneurysm. However, tortuous-blood-vessel-related mechanical vasospasm or blood stagnation makes it impossible to insert a 6 Fr inner catheter to a distal site in some patients. For adjunctive techniques, devices may interfere with each other in a 6 Fr inner catheter, reducing the operability.
Case Presentation: In this study, we termed a method of placing two 4.2 Fr FUBUKI catheters (Asahi Intecc Co., Ltd, Aichi, Japan) in parallel in an 8 Fr shuttle sheath (SS) to reduce the resistance to a parent blood vessel and improve the operability during an adjunctive technique, “dual inner catheter technique (DICT)”, and selected the DICT for 10 patients with unruptured cerebral aneurysms.
Conclusion: The DICT reduced the distance from the aneurysm, device-related interference, and risk of blood stagnation/mechanical vasospasm, improving the operability/safety.
