In defense of cochlear implants(see? im not against) the failure may not be the CI itself but the inner ear of the person. If you have few or no hair cells, HAs won't work and CI attempts to bypass the missing hair cells. However if anything else in the inner ear is damaged or missing, a CI won't work either and reimplanting the CI won't help either. You need a healthy cochlea, auditory nerve and all the other parts. Only your hair cells can be missing for a CI to work.
I am still reading around on why HAs and CI does not work for everyone, im sure there's many other reasons. Everyone is different to put things in a nutshell. Ive read of people with CI for whom the internal CI works fine and all the electrodes are good, yet that person doesn't benefit from CI. This means other factors besides missing hair cells plays into this. If that person was a CI candidate, it means no one can predict for whom CI will work and for whom CI won't work.
If CI was working great and stopped working and the fault was in the internal CI, then yes it makes sense to be reimplanted. They can test your internal CI and all the electrodes. I know a person who's internal CI was still working but he stopped recieving benefit from CI. He was told that either his brain rejected the CI or something in his inner ear(other than hair cells) stopped working. They gave him a choice of having the CI removed and reimplanted with a different CI but did not have high hopes of a 2nd CI working either. His other choice was to give up all his residual hearing in the other ear and hope the CI works. If it doesn't work, he will be 100% deaf in both ears. His choice was to stop wearing the CI processor for a year then try again in the hopes his brain would accept the CI after a one year break. If this didn't work then he would have ruled out the brain being the problem and the problem would be something in his inner ear.
I am still reading around on why HAs and CI does not work for everyone, im sure there's many other reasons. Everyone is different to put things in a nutshell. Ive read of people with CI for whom the internal CI works fine and all the electrodes are good, yet that person doesn't benefit from CI. This means other factors besides missing hair cells plays into this. If that person was a CI candidate, it means no one can predict for whom CI will work and for whom CI won't work.
If CI was working great and stopped working and the fault was in the internal CI, then yes it makes sense to be reimplanted. They can test your internal CI and all the electrodes. I know a person who's internal CI was still working but he stopped recieving benefit from CI. He was told that either his brain rejected the CI or something in his inner ear(other than hair cells) stopped working. They gave him a choice of having the CI removed and reimplanted with a different CI but did not have high hopes of a 2nd CI working either. His other choice was to give up all his residual hearing in the other ear and hope the CI works. If it doesn't work, he will be 100% deaf in both ears. His choice was to stop wearing the CI processor for a year then try again in the hopes his brain would accept the CI after a one year break. If this didn't work then he would have ruled out the brain being the problem and the problem would be something in his inner ear.