A new application of Piezo actuator-driven pulsed waterjet in dissecting the spinal cord. An experimental study of Swine

Research output: Contribution to journalComment/debatepeer-review

Abstract

Background: Waterjet dissection has broad application in neurosurgery. It enables precise dissection of gyri or intracranial tumors with sparing adjacent tissue and vessels. Objective: To evaluate feasibility of waterjet in dissecting the spinal cord. Methods: Waterjet was applied to dissect posterior median sulcus of anesthetized swine spinal cords. Waterjets were delivered in different strengths and various durations. In 4 separate swine, somatosensory evoked potentials were simultaneously recorded during dissections. Histological analyses were performed for lesion measurements and evaluating tissue sparing. Results: Increased strength and exposure time of waterjet led deeper and wider dissections of the spinal cord. Light microscopy demonstrated minimal tissue damages along the dissected fissures. During the dissection with 10 volts for 30 seconds, responses of the somatosensory evoked potentials were maintained. Conclusion: Waterjet is feasible and reliable option in dissecting the spinal cord. It could possibly achieve both spinal cord dissection and functional preservation.

Original languageEnglish
Pages (from-to)O-65
JournalTransactions of Japanese Society for Medical and Biological Engineering
Volume52
DOIs
Publication statusPublished - 2014 Aug 17

Keywords

  • Somatosensory evoked potential
  • Spinal cord
  • Surgical Instrument
  • Water-pulse jet

ASJC Scopus subject areas

  • Biomedical Engineering

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