Three-way bipolar forceps: A novel bipolar coagulator system for nerve stimulation and detection of nerve potentials

Yoshiyuki Fujita, Yoshihiro Muragaki, Kyojiro Nambu, Tomokatsu Hori, Hiroshi Iseki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Preoperative characterization of brain anatomy by magnetic resonance imaging and intraoperative functional characterization of the nervous system is essential in patients undergoing radical resection of brain tumors. A novel integrated system was developed combining conventional bipolar forceps with an electric stimulator and an oscilloscope. The system consists of a mechanical switching circuit allowing a wide range of electric characteristics and was designed to perform intraoperative electrophysiological studies, including functional mapping and measurements of motor evoked potentials (MEPs) and somatosensory evoked potentials (SEPs). This system achieved a significant reduction in exchange time (from 3.63 ± 1.00 sec to 1.12 ± 0.42 sec) between coagulation and stimulation, and reproducible measurement of MEPs from porcine limbs by cortical stimulation using the bipolar forceps. Functional mapping under awake craniotomy was carried out by cortical stimulation in patients with glioblastoma, and median nerve SEPs with high signal-to-noise ratio were elicited from the bipolar forceps on the sensory cortex of patients under general anesthesia. This integrated system is technically easy to operate and allows functional monitoring of an area that would otherwise be difficult to access using conventional methods. This three-way bipolar forceps system may reduce postoperative complications in patients undergoing neurosurgical procedures.

Original languageEnglish
Pages (from-to)169-174
Number of pages6
JournalNeurologia Medico-Chirurgica
Volume46
Issue number4
DOIs
Publication statusPublished - 2006
Externally publishedYes

Fingerprint

Surgical Instruments
Motor Evoked Potentials
Somatosensory Evoked Potentials
Neurosurgical Procedures
Craniotomy
Median Nerve
Signal-To-Noise Ratio
Glioblastoma
Brain Neoplasms
General Anesthesia
Nervous System
Anatomy
Swine
Extremities
Magnetic Resonance Imaging
Brain

Keywords

  • Bipolar forceps
  • Functional mapping
  • Intraoperative monitoring
  • Motor evoked potential
  • Somatosensory evoked potential

ASJC Scopus subject areas

  • Clinical Neurology
  • Surgery

Cite this

Three-way bipolar forceps : A novel bipolar coagulator system for nerve stimulation and detection of nerve potentials. / Fujita, Yoshiyuki; Muragaki, Yoshihiro; Nambu, Kyojiro; Hori, Tomokatsu; Iseki, Hiroshi.

In: Neurologia Medico-Chirurgica, Vol. 46, No. 4, 2006, p. 169-174.

Research output: Contribution to journalArticle

Fujita, Yoshiyuki ; Muragaki, Yoshihiro ; Nambu, Kyojiro ; Hori, Tomokatsu ; Iseki, Hiroshi. / Three-way bipolar forceps : A novel bipolar coagulator system for nerve stimulation and detection of nerve potentials. In: Neurologia Medico-Chirurgica. 2006 ; Vol. 46, No. 4. pp. 169-174.
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