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Updated: Jan 28, 2026
11:27
Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging
Published on: April 4, 2013
12.9K
Precision microcatheter shaping in vertebrobasilar aneurysm coiling.
Katsunari Namba1, Ayuho Higaki1, Naoki Kaneko2
11 Center for Endovascular Therapy, Division of Neuroendovascular Surgery, Jichi Medical University, Shimotsuke, Japan.
Summary
A novel microcatheter shaping technique accurately conforms to patient-specific anatomy for treating vertebrobasilar artery aneurysms. This method improves procedural success and stability in complex neurovascular cases.
Area of Science:
- Neurosurgery
- Interventional Neurology
- Medical Device Engineering
Background:
- Intracranial aneurysm coiling requires precise microcatheter shaping.
- Vertebrobasilar artery anatomy presents challenges due to its tortuous and mobile nature.
- Existing shaping methods are often inadequate for complex posterior circulation aneurysms.
Observation:
- A new method utilizes patient-specific vessel anatomy to pre-shape microcatheters.
- Microcatheters were exposed to the patient's vessel for five minutes to imprint its shape.
- Steam shaping was then applied to the microcatheter tip along the aneurysm's long axis.
Findings:
- The pre-shaped microcatheters accurately matched the vessel and aneurysm anatomy in most cases.
- Successful catheterization of five vertebrobasilar aneurysms was achieved without a microguidewire.
- Microcatheter stability was maintained throughout all procedures.
Implications:
- This technique offers a precise and adaptable approach to microcatheter shaping for complex aneurysms.
- It may enhance procedural efficiency and outcomes in neurovascular interventions.
- Further investigation into this patient-specific shaping method is warranted.
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