Juan Ansó, May 2015
Drill integrated neuro-monitoring for minimally invasive robotic cochlear implantation Background —
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Facial nerve safety – preliminary work —
Neuromonitoring for FN protection (detect FN proximity)
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Optimal stimulation protocol determined in sheep
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Custom neuromonitoring probe detects FN (<0.1 mm)
Project Goal —
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Cathode
Drill integrated stimulation for conitinuous FN monitoring Anode 3 Anode 2 Anode 1
Proposal — — —
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Drill passes within 0.3 – 1 mm of facial nerve
Protocol verification in humans (medical grade EMG device required) (Neurosign device, 17000 CHF )
FN
Drill bit insulation coating for integrated stimulation electrodes (Student 2.5 months ~ 14,000 CHF) Total budget 31,000 CHF, project duration 6 months
Collaborators —
Marco Caversaccio, Department of ENT, Unibe
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Jorg Patscheider, Coatings department, Empa
Stimulus threshold (mA)
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Sheep 2 Trajectory 7 LD = 0
d=2 d=4 d=7 Mono
1.5 1 0.5 0.3 0.1 -1
0 Axial distance (mm)
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