Totally implantable cochlear implant

A totally implantable cochlear implant (TICI) is a new type of cochlear implant and is currently in development. Unlike a conventional cochlear implant, which has both an internal component (the implant) and an external component (the audio processor), all the components of the TICI - including the microphone and battery - are implanted under the skin.[1] This makes the TICI completely invisible from the outside.

The TICI is currently in the clinical feasibility study stage of development.[2] The first patient in Europe was implanted with a TICI in September 2020 as part of a clinical trial.[3]

Parts

The TICI contains the same internal components as a conventional cochlear implant: the magnet, antenna coil, electronics and the electrode array, however will also include the features of an audio processor including an implanted rechargeable battery and microphone.[4] The TICI components may be integrated into a single case, the so-called monobody design, or the various components may be attached to one another by connectors, thereby allowing replacement of each of the several modules in case of failure.[5]

Some external hardware will still be required. The internal battery is charged transcutaneously using an external charger, for example while the user sleeps at night.[1] A remote control or app may also be needed in order to switch the implant on and off, adjust the microphone sensitivity and indicate the battery status, among other functions.[4]

Benefits

A totally implantable — and therefore “invisible” — cochlear implant is seen as a benefit to users, particularly those who feel self-conscious about wearing visible hearing devices.[5]  

In addition, as the TICI has no external components, it is less susceptible to small breakages from knocks and falls.[5] The lack of external parts also means that they cannot be mislaid – a common problem with pediatric users.

A TICI can function while showering, swimming, and during many types of vigorous physical activity. This allows the user to hear while carrying out these activities.[5]

References
  1. Steixner, Viktor. "Research". University of Innsbruck. Retrieved 2021-11-09.
  2. "Audiology Worldnews". www.audiology-worldnews.com. Retrieved 2021-11-09.
  3. "hoerakustik.net - Erstes TICI in Europa implantiert". www.hoerakustik.net. Retrieved 2021-11-09.
  4. Themes, U. F. O. (2016-08-27). "Considerations for Devising a Totally Implantable Cochlear Implant". Ento Key. Retrieved 2021-11-09.
  5. Cohen, Noel (April 2007). "The Totally Implantable Cochlear Implant". Ear and Hearing. 28 (2): 100S–101S. doi:10.1097/AUD.0b013e31803150f4. ISSN 1538-4667. PMID 17496658. S2CID 38696317.
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