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The sizer-dissector for aneurysm clip selection: technical note.

Steven L Giannotta1

  • 1Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA. gianott@hsc.usc.edu

Neurosurgery
|February 14, 2002
PubMed
Summary
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Selecting the correct Sugita aneurysm clip is simplified with a new sizer-dissector tool. This device enhances safety and reduces wasted clips during neurosurgical procedures.

Area of Science:

  • Neurosurgery
  • Surgical Instrumentation

Background:

  • Aneurysm clip selection often involves trial and error due to challenges in dissecting the clip blade pathway.
  • Inadequate dissection can lead to difficulties in choosing the appropriate clip size, impacting surgical efficiency and safety.

Purpose of the Study:

  • To introduce a novel sizer-dissector tool designed to mimic the caliber of Sugita aneurysm clips.
  • To facilitate accurate selection of the proper clip size, thereby improving the clipping procedure for intracranial aneurysms.

Main Methods:

  • Development of three sizer-dissectors, each replicating the wire size of commonly used Sugita clips.
  • Each sizer-dissector features a single aneurysm clip blade attached to a microdissector handle, scaled in millimeters.
  • The device is used after dissection to confirm the pathway for the intended aneurysm clip blades, aiding in selection.

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Main Results:

  • The sizer-dissector was employed in the selection of blade length for 16 aneurysms and blade caliber for 5 aneurysms during 83 procedures.
  • No complications were reported in association with the use of the sizer-dissector device.
  • The tool proved effective in guiding the selection of appropriate clip dimensions.

Conclusions:

  • Pre-operative use of the sizer-dissector simplifies the process of selecting the correct aneurysm clip.
  • The device enhances surgical safety by ensuring a more accurate clip fit.
  • Implementation of the sizer-dissector leads to a reduction in clip wastage.