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Cochlear Implants
Published in John C Watkinson, Raymond W Clarke, Christopher P Aldren, Doris-Eva Bamiou, Raymond W Clarke, Richard M Irving, Haytham Kubba, Shakeel R Saeed, Paediatrics, The Ear, Skull Base, 2018
Andrew Marshall, Stephen Broomfield
The totally implantable cochlear implant (TICI). Early prototypes of completely implanted cochlear implants have shown that such a device can be safe and effective.76 Challenges remain in designing a microphone that can detect external signals without picking up unwanted noises related to movement, breathing, etc.
Perfusion Brain Mapping in the Treatment of Acute Stroke
Published in Yu Chen, Babak Kateb, Neurophotonics and Brain Mapping, 2017
Michael J. Alexander, Paula Eboli
The ADAPT technique was used, two passes were attempted, and finally the clot was removed. TICI 3 revascularization was achieved (Figures 13.14 and 13.15) 14 min from groin puncture.
Evaluations on the stability and bio-compatibility of a new piezoelectric microphone for the implantable middle ear microphone
Published in Acta Oto-Laryngologica, 2021
Yu Zheng, Xian-hao Jia, Na Gao, Xin-Da Xu, Ning Cong, Fang-lu Chi
Cochlear implantation is the current best option for patients with profound hearing loss to improve their hearing. However, the cochlear implants (CIs) used worldwide currently require exterior components, including a battery, speech processor, and microphone, behind the ear to function, and this has limited wearers’ use of CIs while sleeping or participating in sports, such as swimming. Thus, it is necessary and imperative to develop a totally implantable cochlear implant (TICI). However, three major challenges must be tackled to develop such a TICI: the development of an implantable and rechargeable battery, an implantable speech processor, and an implantable microphone. So far, the former two problems have been solved, with an implantable and rechargeable battery as well as an implantable speech processor successfully developed [1]. Therefore, the main challenge lies in the development of an implantable microphone, which serves as a sensor and is required to replace the external microphone to collect acoustic signals and convert them into electrical signals [2]. Theoretically, the implantable microphone is supposed to be able to pick up external acoustic signals accurately and sensitively, and, at the same time, it could avoid or reduce the interference of internal noise from the human body as much as possible.
Translational research around five categories of CI
Published in Acta Oto-Laryngologica, 2021
The main goal now and for the near future is to explain variations in outcomes and to reduce those. This means individualising or personalising the treatment with CI for an individual candidate with a specific stable or progressing hearing loss and, thus, maximising the outcome for everyone in the meaning of precision medicine. Choice of best suited electrode and choice of an implant that is future-ready by being signal-transparent is essential. If achieved, then new results from research can be implemented into an upgrade audio processor or downloaded into the implant electronics of a TICI (Totally Implantable Cochlear Implant) at any time post-implant surgery and for decades after. Such research and development will result in further improved hearing in quiet and in noise, more enjoyment for music, improved sound localisation possibilities and in a shorter learning curve for recipients.
Percutaneous pedestals in cochlear implantation
Published in Cochlear Implants International, 2018
Alistair Mitchell-Innes, Richard Irving, Robert Briggs
Although cochlear implant companies are unlikely to incorporate the pedestal into commercial products it remains an important accessory to research projects. The skin problems associated with long-term use affect enough people to warrant consideration of a different design or surgical technique. Pre-clinical and clinical studies with other percutaneous devices have shown lower reported rates of inflammation and skin migration when using hydroxyapatite (Jansen et al., 1992; Piza et al., 2004). Some bone anchored hearing devices as a result now come with a hydroxyapatite coating over the section of implant in contact with soft tissue. A similar design in percutaneous pedestals may be useful. Integrating new technology may allow the entire pedestal to be significantly reduced in size which would have both cosmetic benefits and may reduce inflammation. A long-standing industry goal has been to create a totally implantable cochlear implant. Implanting a battery, speech processor and microphone all have their own challenges and direct access to them via percutaneous plugs in early clinical trials will allow safer, more complete testing.