Intracochlear Pressure Transients During Cochlear Implant Electrode Insertion: Effect of Micro-mechanical Control on Limiting Pressure Trauma
| Autor: | Marlan R. Hansen, Renee M. Banakis Hartl, Daniel J. Tollin, Christopher Kaufmann |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Hearing preservation
Extramural business.industry medicine.medical_treatment Limiting Cochlear Implantation Article Sensory Systems Cochlea Electrode insertion Cochlear Implants Sound Hearing Otorhinolaryngology Cochlear implant Electrode Pressure medicine Humans Neurology (clinical) Implant Cadaveric spasm business Biomedical engineering |
| Zdroj: | Otol Neurotol |
| ISSN: | 1537-4505 1531-7129 |
| DOI: | 10.1097/mao.0000000000002164 |
| Popis: | HYPOTHESIS: Use of micro-mechanical control during cochlear implant (CI) electrode insertion will result in reduced number and magnitude of pressure transients when compared with standard insertion by hand. INTRODUCTION: With increasing focus on hearing preservation during CI surgery, atraumatic electrode insertion is of the utmost importance. It has been established that large intracochlear pressure spikes can be generated during the insertion of implant electrodes. Here, we examine the effect of utilizing a micro-mechanical insertion control tool on pressure trauma exposures during implantation. METHODS: Human cadaveric heads were surgically prepared with an extended facial recess. Electrodes from three manufacturers were placed both by utilizing a micro-mechanical control tool and by hand. Insertions were performed at three different rates: 0.2 mm/s, 1.2 mm/s, and 2 mm/s (n=20 each). Fiber-optic sensors measured pressures in scala vestibuli and tympani. RESULTS: Electrode insertion produced pressure transients up to 174 dB SPL. ANOVA revealed that pressures were significantly lower when utilizing the micro-mechanical control device compared with insertion by hand (p< |
| Databáze: | OpenAIRE |
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