Implantable Hearing Devices Besides Cochlear and Brain Stem Implants



The prevalence of hearing loss increases with age in the general population. Of the more than 30 million Americans having severe hearing loss, only 20 % with hearing loss significant enough to warrant amplification actually seek assistance for amplification [1]. The severity of hearing loss may range (Table 2.1) from mild, wherein the individual only has difficulty in presence of significant background noise, to profound, wherein the patient is unable to understand and communicate even in the quietest of situations [2]. Patients with a mild loss do not require treatment other than instructions to choose or modify their acoustic environment and to reduce background noise, thereby improving their hearing experience. But patients with moderate to severe and profound hearing loss will require either surgery or some form of amplification to improve their hearing. Amplification with conventional hearing aids is offered when the patient has either a significant sensorineural component of hearing loss or when middle ear reconstruction with passive implants is not beneficial due to middle ear mucosal and tubal dysfunction. Conventional hearing aids are associated with several drawbacks, and so, researchers and otologists have been trying to devise implantable hearing devices for the past several decades.


Hearing Loss Tympanic Membrane Round Window Ossicular Chain Profound Hearing Loss 


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Copyright information

© Springer India 2014

Authors and Affiliations

  1. 1.ENT DepartmentPD Hinduja HospitalMahim, MumbaiIndia

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