Scaled clips for aneurysm surgery: technical note
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Updated: Aug 1, 2026
Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
Published on: September 25, 2009
1Department of Neurosurgery, Tokyo Metropolitan Fuchu Hospital, Japan. mizutani@fuchu-hp.fuchu.tokyo.jp
Objective:
The tips of clip blades are often invisible during operations on large, deep, or posteriorly projecting aneurysms. To overcome this problem, we sought to develop a series of scaled clips.
Methods:
We made scaled clips modified from Yaşargil titanium clips. The blades of the new clips are scaled every 5 mm from the tips with alternating colors. We have added six new types of straight scaled clips.
Results:
To date, we have performed approximately 40 aneurysm clippings using the new scaled clips and have confirmed their usefulness.
Conclusion:
Scaling on the blades helps confirm accurate placement of a clip, even during operations for large, deep, or posteriorly projecting aneurysms, in which blade tips are often invisible.
