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Auditory Brainstem Implant. Electrode array inside cochlea. Nucleus. Array. In. Situ. -. showing. 22. channels. safely. placed. in. speech. frequency. range. The Auditory Pathway Diagram showing relative positions of a cochlear implant and an auditory brainstem implant.
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Nucleus Array In Situ - showing 22 channels safely placed in speech frequency range
The Auditory PathwayDiagram showing relative positions of a cochlear implant andan auditory brainstem implant
Nucleus 24 Auditory Brainstem Implant Electrode array (21 platinum disks 0.7mm diameter) Monopolar reference electrodes (ball & plate) T-shaped Dacron mesh Microcoiled electrode wires Removeable magnet CI24M receiver-stimulator
Position of ABI in the Brainstem WPS / BLN
PenetratingAuditory Brainstem Implant ABI Electrode PABI Electrode
ABI 24 Advantages and Benefits • Optimizes stimulation using 21 distinct sites. • Potential to Confirm placement using NRT. • Widest choice of Coding strategies.
MRI Static Magnetic Field (1.5T) Magnetic Switched Gradients (20 T/s) Radio Frequency (RF) Energy (2-16KW peak @ 64 MHz) FORCE in Magnetic components CURRENT in conducting components HEAT
Tests to Ensure ReliabilityImpact Test Cochlear routinely conducts tests to ensure the reliability of our products. For example, the CI24M implant has undergone extreme impact testing to verify ruggedness by simulating a blow to the head of a T-ball travelling at 65.0km/h (40.4mph). Test rig: impact hammer with T-ball with a mass of 3.6 kg (7.9lb), dropped through 450mm (17.7in).
Nucleus 24 Auditory Brainstem Implant Electrode array (21 platinum disks 0.7mm diameter) Monopolar reference electrodes (ball & plate) T-shaped Dacron mesh Microcoiled electrode wires Removeable magnet CI24M receiver-stimulator