Download
auditory brainstem implant n.
Skip this Video
Loading SlideShow in 5 Seconds..
Auditory Brainstem Implant PowerPoint Presentation
Download Presentation
Auditory Brainstem Implant

Auditory Brainstem Implant

1976 Views Download Presentation
Download Presentation

Auditory Brainstem Implant

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Auditory Brainstem Implant

  2. Electrode array inside cochlea

  3. Nucleus Array In Situ - showing 22 channels safely placed in speech frequency range

  4. The Auditory PathwayDiagram showing relative positions of a cochlear implant andan auditory brainstem implant

  5. 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

  6. Position of ABI in the Brainstem

  7. Position of ABI in the Brainstem WPS / BLN

  8. PenetratingAuditory Brainstem Implant ABI Electrode PABI Electrode

  9. Penetrating ABI Location

  10. Rikke Pedersen 20 y

  11. ABI 24 Advantages and Benefits • Optimizes stimulation using 21 distinct sites. • Potential to Confirm placement using NRT. • Widest choice of Coding strategies.

  12. MRI Considerations

  13. 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

  14. Removal of Nucleus 24 ABI Magnet

  15. 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).

  16. 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