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Updated: Mar 26, 2026

Spinal Cord Electrophysiology II: Extracellular Suction Electrode Fabrication
Published on: February 20, 2011
[Extendable Cords to Prevent Tumbling of a Suction Device during Craniotomy]
Satoru Shimizu1, Takahiro Mochizuki, Shigeyuki Osawa
1Department of Neurosurgery, Yokohama Brain and Spine Center.
Objective:
Suction is necessary during craniotomy, and intraoperative tumbling of the suction device interrupts operative procedures. To avoid this, we developed a technique that would fasten the device to an extendable cord as is used to secure cell phones.
Surgical Technique:
We used this technique in more than 300 craniotomies at the specific point of time when the suction device tends to tumble, i. e., during the opening and closure of a wound, which requires frequent instrument exchanges. Extendable cords fastened to the tip of the suction hose using a gift tie were attached to the drapes to secure the suction device next to the operative field. During the operation, the extendable cord followed the suction device manipulations. Consequently, although there was some tension in the cord during its extension, the maneuverability of the suction device was maintained. As the hanging suction device was closer to the operative field than devices stored in conventional pockets, its manipulation was easier and quicker. Upon release, the suction device automatically returned to its original position without distracting the surgeon. Tumbling of the device was prevented, and there were no procedure-related complications.
Conclusions:
Our simple modification using extendable cords prevented tumbling, avoided unnecessary replacements, and eased the manipulation of a suction device.

