An Operating Microscope with Higher Magnification and Higher Resolution for Cerebral Aneurysm Surgery: Preliminary Experience—Technical Note

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  • MATSUMURA Nobuhisa
    Department of Neurosurgery, Stroke Center, Saiseikai Toyama Hospital
  • SHIBATA Takashi
    Department of Neurosurgery, Stroke Center, Saiseikai Toyama Hospital
  • HORI Emiko
    Department of Neurosurgery, Stroke Center, Saiseikai Toyama Hospital
  • KAMIYAMA Hironaga
    Department of Neurosurgery, Stroke Center, Saiseikai Toyama Hospital
  • TANI Mariko
    Department of Neurosurgery, Stroke Center, Saiseikai Toyama Hospital
  • OKAMOTO Soushi
    Department of Neurosurgery, Stroke Center, Saiseikai Toyama Hospital
  • KUBO Michiya
    Department of Neurosurgery, Stroke Center, Saiseikai Toyama Hospital
  • HORIE Yukio
    Department of Neurosurgery, Stroke Center, Saiseikai Toyama Hospital
  • ENDO Shunro
    Department of Neurosurgery, Faculty of Medicine, University of Toyama
  • KURODA Satoshi
    Department of Neurosurgery, Faculty of Medicine, University of Toyama

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Description

We describe a higher magnifying power operating microscope system to improve one method of high-quality microsurgical clipping for cerebral aneurysm in some cases. This higher magnification is achieved by a new lens design in the optical system, which makes the image of the object very clear at high magnifications (distinctiveness of 7 μm). This higher-resolution operating microscope system provides the surgeon with higher-magnified images (at the maximum of more than 30× magnifications as each working distance) in the operating field. The magnifications can be changed from low power (2.9×) to high power (62.0×) depending on the circumstances in a given procedure. We have used this operating microscope system on 11 patients with microsurgical clipping for cerebral aneurysms. Microsurgical treatment could be performed safely and precisely. All aneurysms were treated without any technical complications. We think that the use of this microscope would have potential benefits for microsurgical treatment for cerebral aneurysms because of better visualization.

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