gms | German Medical Science

76th Annual Meeting of the German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

04.05. - 08.05.2005, Erfurt

Long-Term Study of implantable Hearing Aid "Vibrant Soundbridge"

Meeting Abstract

  • corresponding author Hamidreza Mojallal - Medical University Hanover, Germany
  • Steffen Rose - Medical University Hanover, Germany
  • Christoph Arnoldner - Medical University Hanover, Germany
  • Thomas Lenarz - Medical University Hanover, Germany

Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. 76. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie e.V.. Erfurt, 04.-08.05.2005. Düsseldorf, Köln: German Medical Science; 2005. Doc05hno611

The electronic version of this article is the complete one and can be found online at:

Published: September 22, 2005

© 2005 Mojallal et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.



The implantable hearing aids are nowadays an inseparable part of modern Otology and Audiology clinics. In principle, an active prosthesis, which is driven through the appropriate signal processing, is implanted in the middle ear system. In this way the patients could achieve a better acoustical recognition and speech perception with an open auditory ear canal at the same time.

In this study 11 patients out of 46 patients, who were implanted with an implanted hearing device (Vibrant® Sound bridge MED’EL) at the Otolaryngology Department of Medical University of Hanover, are revaluated with several audiological tests. The postoperative observation time averages 6.6 years.

Results indicate a hearing profit of 28 dB max. gain on average. At one-syllabic-speech tests the patients could achieve a 27% improvement of speech intelligibility with the VSB-system. The results of Multi frequency Tympanometry revealed that Vibrent Ossicular Prosthesis (VORP) hasn’t any significant influences on normally resonance frequency of the middle ear, which is between 800 to 1200 Hz.

In the case of a correct patient’s recruitment the implantable hearing devices present a good hearing profit, a high qualified speech perception with more comfort.