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Arachnoid knife from a hypodermic needle Technical note.
1Division of Neurosurgery, National Institute of Neurology and Neurosurgery Manuel Velasco Suarez, and Communis.cerebrovascularis., Tlalpan, Mexico City 14269, Mexico. nathal@edgar.to
Surgical Neurology
|October 27, 2007
Summary
A modified hypodermic needle serves as an effective, low-cost arachnoid knife for neurosurgery. This readily available tool has been safely used in over 350 procedures, offering a practical alternative for arachnoid dissection.
Area of Science:
- Neurosurgery
- Surgical Instrumentation
Background:
- Arachnoid knives are essential for neurosurgical procedures like sylvian fissure dissection and arteriovenous malformation (AVM) excision.
- Existing arachnoid knives are often expensive and prone to dulling with use or improper handling.
Purpose of the Study:
- To introduce and evaluate the utility of a hypodermic needle as a cost-effective arachnoid knife alternative.
- To demonstrate the applicability of a modified hypodermic needle in various neurosurgical interventions.
Main Methods:
- A standard hypodermic needle was adapted and utilized as an arachnoid knife.
- The technique was applied in over 350 neurosurgical procedures over a 6-year period.
Main Results:
- The hypodermic needle proved effective for opening the arachnoid layer in diverse neurosurgical operations.
- It was also successfully employed for sharp arteriotomies during bypass procedures and dura mater opening.
- No complications were reported from using this technique in any of the procedures.
Conclusions:
- A standard hypodermic needle functions as a practical and effective arachnoid knife in the operating room.
- This method offers a low-cost, globally accessible alternative to conventional surgical knives.
