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Middle ear implant

Ulrich Kisser, Christine Adderson-Kisser, Marius Förster, Klaus Stelter, Marion San Nicolo, Florian Schrötzlmair, Joachim Michael Müller, John Martin Hempel
INTRODUCTION: In Internet forums and other social media many reports regarding chronic headaches after cochlear implantation can be found. Although quite rare, there are also some reports in the literature. However, little is known regarding the true prevalence of headaches in persons who have undergone cochlear implant surgery. OBJECTIVES: The primary aim of this study was to investigate the 1-year prevalence of headache in patients having received a cochlear implantation ("cochlear implant group") in comparison with patients having undergone middle ear surgery ("surgery group") and persons with no history of head and neck surgery ("non-ear-nose-throat [ENT] group")...
October 12, 2016: Otology & Neurotology
Christian Güldner, Isabell Diogo, Eva Bernd, Stephanie Dräger, Magis Mandapathil, Afshin Teymoortash, Hesham Negm, Thomas Wilhelm
Cone beam computed tomography (CBCT, syn. digital volume tomography = DVT) was introduced into ENT imaging more than 10 years ago. The main focus was on imaging of the paranasal sinuses and traumatology of the mid face. In recent years, it has also been used in imaging of chronic ear diseases (especially in visualizing middle and inner ear implants), but an exact description of the advantages and limitations of visualizing precise anatomy in a relevant number of patients is still missing. The data sets of CBCT imaging of the middle and inner ear of 204 patients were analyzed regarding the visualization of 18 different anatomic structures...
October 17, 2016: European Archives of Oto-rhino-laryngology
Meirav Sokolov, Ohad Hilly, David Ulanovski, Yotam Shkedy, Joseph Attias, Eyal Raveh
OBJECTIVES: Evaluate the intra- and postoperative effects of untreated otitis media with effusion (OME) in cochlear implant (CI) patients, and to assess the role of ventilation tube (VT) introduction before implantation. STUDY DESIGN: A retrospective chart review. SETTING: Tertiary referral center. PATIENTS: CI patients, aged 10 years or younger, implanted during 2009 to 2013. INTERVENTIONS: Cases were divided into three groups: 1) normal aerated middle ear before CI, 2) OME treated with VT, and 3) untreated OME...
September 30, 2016: Otology & Neurotology
Thomas Zahnert, Marie-Luise Metasch, Hannes Seidler, Matthias Bornitz, Nicoloz Lasurashvili, Marcus Neudert
HYPOTHESIS: Electromagnetical excitation of ossicular vibration is suitable for middle ear transmission measurements in the experimental and clinical setting. Thereby, it can be used as a real-time monitoring system for quality control in ossiculoplasty. BACKGROUND: Positioning and coupling of middle ear prosthesis are a precondition for good postoperative hearing results, but at the same time completely dependent upon the surgeon's subjective judgment during surgery...
October 4, 2016: Otology & Neurotology
Francis Pete X Creighton, Xiying Guan, Steve Park, Ioannis John Kymissis, Hideko Heidi Nakajima, Elizabeth S Olson
OBJECTIVE: To validate an intracochlear piezoelectric sensor for its ability to detect intracochlear pressure and function as a microphone for a fully implantable cochlear implant. METHODS: A polyvinylidene fluoride (PVDF) piezoelectric pressure sensor was inserted into a human fresh cadaveric round window at varying depths. An external sound pressure stimulus was applied to the external auditory canal (EAC). EAC pressure, stapes velocity, and piezoelectric sensor voltage output were recorded...
September 14, 2016: Otology & Neurotology
Theodore R McRackan, Jayne B Ahlstrom, William B Clinkscales, Ted A Meyer, Judy R Dubno
OBJECTIVE: To compare word recognition scores for adults with hearing loss measured using earphones and in the sound field without and with hearing aids (HA). STUDY DESIGN: Independent review of presurgical audiological data from an active middle ear implant (MEI) FDA clinical trial. SETTING: Multicenter prospective FDA clinical trial. PATIENTS: Ninety-four adult HA users. INTERVENTIONS/MAIN OUTCOMES MEASURED: Preoperative earphone, aided word recognition scores, and speech intelligibility index...
September 14, 2016: Otology & Neurotology
Friederike Pohl, Gerrit Paasche, Thomas Lenarz, Robert Schuon
OBJECTIVE: To investigate and establish the use of tympanometry in conscious sheep to provide a means of objective assessment of tympanic membrane integrity, middle ear ventilation and functioning of the Eustachian tube (ET). DESIGN: After conditioning the sheep for four weeks, tympanometric measurements at 226 Hz were carried out weekly for 13 weeks. Before measurements, the external ear canal had been cleaned. Resultant curves were classified according to human reference values...
September 14, 2016: International Journal of Audiology
M Leinung, Y Zaretsky, B Ernst, B Vaerst, T Stöver, C Hey
BACKGROUND: The audiological treatment of children with aural atresia makes high demands on physicians and acousticians. Conventional hearing systems are often not tolerated by children and therefore do not meet the needs of the early and efficient therapy of hearing disorders. Aim of the present study was the evaluation of the audiological functional gain in children with uni- and bilateral aural atresia provided with the middle ear implant Vibrant Soundbridge(®) (VSB(®)) below the age of 6 years as well as the analysis of parents' satisfaction assessed with questionnaires...
September 2016: Laryngo- Rhino- Otologie
Rasim Yanmaz, Şemsettin Okuyucu, Gülen Burakgazi, Hanifi Bayaroğullari
OBJECTIVES: Presence of aberrant internal carotid artery (ICA) in the tympanic cavity is a very rare case and therefore the diagnosis is a challenge. Here, the authors aimed to address the importance of the diagnosis since the intervention to the middle ear and implants is increasing in number and this condition may lead to life-threatening bleeding. METHODS: Between 2012 and 2016, among the patients referred to the authors' Radiology Department from the Department of Otolaringology for the evaluation of the temporal region for various indications, the authors reported this anomaly in 6 patients and multidetector computerized tomography of these 6 patients and magnetic resonance imaging of 2 were assessed in detail...
September 9, 2016: Journal of Craniofacial Surgery
Dong Ho Shin, Ki Woong Seong, Sunil Puria, Kyu-Yup Lee, Jin-Ho Cho
A number of methods to drive the round window (RW) using a floating mass transducer (FMT) have been reported. This method has attracted attention because the FMT is relatively easy to implant in the RW niche. However, the use of an FMT to drive the RW has been proven to produce low outputs at frequencies below approximately 1 kHz. In this study, a new tri-coil bellows-type transducer (TCBT), which has excellent low frequency output and is easy to implant, is proposed. To design the frequency characteristics of the TCBT, mechanical and electrical simulations were performed, and then a comparative analysis was conducted between a floating mass type transducer (like the FMT) and a fixed type transducer (like the TCBT)...
September 2, 2016: Hearing Research
M Leinung, E Zaretsky, B P Lange, V Hoffmann, T Stöver, C Hey
The aim of this pilot study was to determine the acceptance and benefit from the middle ear implant system Vibrant Soundbridge(®) (VSB, MED-EL Corporation, Austria) by means of a questionnaire, compared to a previously used conventional bone conducting hearing device, in preschool children with unilateral congenital aural atresia. Prospective cohort study. All nine children with unilateral congenital aural atresia used the VSB and had previous experience with a bone conducting hearing device. The benefit from the VSB was evaluated by questionnaires concerning acceptance of hearing aids, handling, listening effort, behavior, quality of life, and the duration of daily use and compared to the experience with the bone conducting hearing device...
August 25, 2016: European Archives of Oto-rhino-laryngology
Jeon Mi Lee, Jinsei Jung, In Seok Moon, Sung Huhn Kim, Jae Young Choi
OBJECTIVES/HYPOTHESIS: We compared the audiologic benefits of active middle ear implants with those of passive middle ear implants with hearing aids in mixed hearing loss, and also compared the outcomes of stapes vibroplasty with those of round window vibroplasty. STUDY DESIGN: Retrospective chart review. METHODS: Thirty-four patients with mixed hearing loss due to chronic otitis media were treated with a middle ear implant. Of these, 15 were treated with a passive middle ear implant (conventional ossiculoplasty with a partial ossicular replacement prosthesis), nine with an active middle ear implant coupling to the stapes, and 10 with an active middle ear implant coupling to the round window...
August 25, 2016: Laryngoscope
Yoon Chan Rah, Ji Young Lee, Myung-Whan Suh, Moo Kyun Park, Jun Ho Lee, Sun O Chang, Seung-Ha Oh
OBJECTIVE: To determine the optimal surgical approach for cochlear implantation (CI) preoperatively based on the spatial relation of a displaced facial nerve (FN) and middle ear structures and to analyze clinical outcomes of CHARGE syndrome. METHODS: Facial nerve displacement and associated deviation of inner ear structures were analyzed in 13 patients (17 ears) with CHARGE syndrome who underwent CI. Surgical accessibility through the facial recess was assessed based on anatomical landmarks...
November 2016: Annals of Otology, Rhinology, and Laryngology
Ivo Joachim Kruyt, Ann-Louise Mc Dermott, Myrthe Karianne Sophie Hol
No abstract text is available yet for this article.
2016: Case Reports in Otolaryngology
Nicolas Verhaert, Joris Walraevens, Christian Desloovere, Jan Wouters, Jean-Marc Gérard
Severe to profound mixed hearing loss is associated with hearing rehabilitation difficulties. Recently, promising results for speech understanding were obtained with a direct acoustic cochlear implant (DACI). The surgical implantation of a DACI with standard coupling through a stapedotomy can however be regarded as challenging. Therefore, in this experimental study, the feasibility of direct acoustic stimulation was investigated at an anatomically and surgically more accessible inner ear site. DACI stimulation of the intact, blue-lined and opened lateral semicircular canal (LC) was investigated and compared with standard oval window (OW) coupling...
2016: PloS One
Tina L Samuels, Justin Yan, Pawjai Khampang, Alexander MacKinnon, Wenzhou Hong, Nikki Johnston, Joseph E Kerschner
OBJECTIVE: Toll-like receptor signaling activated by bacterial otitis media pathogens in the middle ear has been shown to play a key role in OM susceptibility, pathogenesis and recovery. Recent studies implicate microRNA 146 (miR-146) in regulation of inflammation via negative feedback of toll-like receptor signaling (TLR) in a wide variety of tissues, however its involvement in otitis media is unknown. METHODS: Human middle ear epithelial cells were stimulated with proinflammatory cytokines, interleukin 1 beta or tumor necrosis factor alpha, for two to twenty-four hours...
September 2016: International Journal of Pediatric Otorhinolaryngology
Xian-Hao Jia, Na Gao, Xin-da Xu, Yong-Zhen Wu, Hou-Yong Kang, Fang-Lu Chi
CONCLUSIONS: The new floating piezoelectric microphone is feasible for use as an implantable middle ear microphone in a totally implantable cochlear implant. OBJECTIVES: A piezoelectric sensor that is driven by the acoustic vibration of the ossicles is one possible design for a microphone for a totally implantable cochlear implant. Such a new floating piezoelectric microphone has been manufactured in the lab. The purpose of this article was to study the frequency response of the new floating piezoelectric microphone in the intact ossicular chain and to identify whether it is usable and implantable...
July 8, 2016: Acta Oto-laryngologica
Thomas Zahnert, Hubert Löwenheim, Dirk Beutner, Rudolf Hagen, Arneborg Ernst, Hans-Wilhelm Pau, Thorsten Zehlicke, Hilke Kühne, Natascha Friese, Anke Tropitzsch, Jan-Christoffer Lüers, Robert Mlynski, Ingo Todt, Karl-Bernd Hüttenbrink
OBJECTIVE: To evaluate the safety and effectiveness of round window (RW), oval window (OW), CliP and Bell couplers for use with an active middle ear implant. METHODS: This is a multicenter, long-term, prospective trial with consecutive enrollment, involving 6 university hospitals in Germany. Bone conduction, air conduction, implant-aided warble-tone thresholds and Freiburger monosyllable word recognition scores were compared with unaided preimplantation results in 28 moderate-to-profound hearing-impaired patients after 12 months of follow-up...
June 29, 2016: Audiology & Neuro-otology
Annekatrin Coordes, Linda Jahreiss, Uwe Schönfeld, Minoo Lenarz
After stapes surgery, patients with mixed or moderate hearing loss have limited possibilities for hearing improvement. We are reporting on a patient who underwent stapedotomy bilaterally 20 years ago and had sensorineural and mixed hearing loss. Recurrent otitis externa prevented the use of hearing aids. This patient was treated bilaterally with the Vibrant Soundbridge (Med-El, Innsbruck, Austria) successively. The Schuknecht piston stapes prostheses remained in situ. The Floating Mass Transducer (FMT; Med-El) was coupled to the round window (RW) and provided good acoustic reinforcement bilaterally...
June 27, 2016: Laryngoscope
Vithal D Udagatti, Rajendran Dinesh Kumar
Middle ear anatomy is complex hence it is difficult to study the microscopic vibration of tympanic membrane and ossicles. The basic research has been done in few centres. Our experience is based on clinical data. The lack of quantitative understanding of structural and functional relationship in the mechanical response of the normal and reconstructed middle ear is major factor in poor hearing results after surgery (Merchant et al. in J Laryngol Otol 112:715-731, 1998). The vibration pattern of tympanic membrane changes with different frequencies...
June 2016: Indian Journal of Otolaryngology and Head and Neck Surgery
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