Concept and evaluation of an endaurally insertable middle-ear implant

Goll, Erich; Dalhoff, Ernst; Gummer, Anthony W.; Heyd, Andreas; Wildenstein, Daniela; Arnold, Heinz; Schraven, Sebastian P.; Kaltenbacher, D.; Schächtele, Jonathan; Schäfer, Armin; Burkhardt, Claus; Tavakoli, Kia; Brenk, Uwe; Pojtinger, Andreas; Remer-Bollow, Uwe; Wesendahl, Theo; Winter, Mark; Zenner, Hans‐Peter

doi:10.1016/j.medengphy.2012.08.005

Cited by 17 publications

(7 citation statements)

References 20 publications

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“…To solve these problems, many institutions began to investigate the implantable middle ear hearing devices (IMEHDs). Different from conventional hearing aids, which operate by overdriving the eardrum with their loudspeaker’s acoustic energy, IMEHDs compensate hearing loss by their implanted transducers’ mechanical stimulation to the ossicles (i.e., malleus, incus, stapes) [ 6 , 7 , 8 ], eardrum [ 9 , 10 , 11 ], or round window [ 12 , 13 , 14 , 15 ]. This IMEHDs’ mechanical simulation eliminates the acoustic feedback problem of hearing aids and increases the sound’s fidelity [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Concept and Evaluation of a New Piezoelectric Transducer for an Implantable Middle Ear Hearing Device

Liu

Cheng

Yang

et al. 2017

Sensors

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Implantable middle ear hearing devices (IMEHDs) have been developed as a new technology to overcome the limitations of conventional hearing aids. The piezoelectric cantilever transducers currently used in the IMEHDs have the advantages of low power consumption and ease of fabrication, but generate less high-frequency output. To address this problem, we proposed and designed a new piezoelectric transducer based on a piezoelectric stack for the IMEHD. This new transducer, attached to the incus body with a coupling rod, stimulates the ossicular chain in response to the expansion-and-contraction of its piezoelectric stack. To test its feasibility for hearing loss compensation, a bench testing of the transducer prototype and a temporal bone experiment were conducted, respectively. Bench testing results showed that the new transducer did have a broad frequency bandwidth. Besides, the transducer was found to have a low total harmonic distortion (<0.75%) in all frequencies, and small release time (1 ms). The temporal bone experiment further proved that the transducer has the capability to produce sufficient vibrations to compensate for severe sensorineural hearing loss, especially at high frequencies. This property benefits the treatment of the most common sloping high-frequency sensorineural hearing loss. To produce a 100 dB SPL equivalent sound pressure at 1 kHz, its power consumption is 0.49 mW, which is low enough for the transducer to be utilized in the IMEHD.

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Section: Introductionmentioning

confidence: 99%

Concept and Evaluation of a New Piezoelectric Transducer for an Implantable Middle Ear Hearing Device

Liu

Cheng

Yang

et al. 2017

Sensors

View full text Add to dashboard Cite

show abstract

“…The results of this method showed audiologically similar results as well-adjusted hearing aids [16], but a long-term study published in 2002 revealed that none of the patients used the system anymore [17]. Alternative, non-commercially approved AMEI with different transducers were developed among others at the University of Dresden (hydroacoustic transducer), the University of Bordeaux (piezoelectric transducer), and the University of Tübingen (piezoelectric implant at the round window with optic infrared) [18], [19], [20]. The earlens tympanic contact transducer was developed by Perkins and Shennib in 1993 based on a SmCo magnet that was implanted at the tympanic membrane in a soft silicone lens.…”

Section: Active Middle Ear Implants (Amei)mentioning

confidence: 99%

Implantierbare Hörsysteme

Tisch

2017

Laryngo-Rhino-Otol

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Combined hearing loss is an essential indication for implantable hearing systems. Depending on the bone conduction threshold, various options are available: Patients with mild sensorineural deafness usually benefit from transcutaneous BCI, while percutaneous BCI systems are recommended also for moderate hearing loss. For combined hearing loss with moderate and high-grade cochlear hearing loss, active middle ear implants are recommended. For patients with incompatibilities or middle ear surgery, implants are a valuable and proven addition to the therapeutic options.

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“…Alternative, non-commercially approved AMEI with different transducers were developed among others at the University of Dresden (hydroacoustic transducer), the University of Bordeaux (piezoelectric transducer), and the University of Tübingen (piezoelectric implant at the round window with optic infrared) [ 18 ], [ 19 ], [ 20 ]. The earlens tympanic contact transducer was developed by Perkins and Shennib in 1993 based on a SmCo magnet that was implanted at the tympanic membrane in a soft silicone lens.…”

Section: Historical Developmentmentioning

confidence: 99%

Implantable hearing devices

Tisch

2017

GMS Current Topics in Otorhinolaryngology - Head and Neck Surgery; 16:Doc06

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Concept and evaluation of an endaurally insertable middle-ear implant

Cited by 17 publications

References 20 publications

Concept and Evaluation of a New Piezoelectric Transducer for an Implantable Middle Ear Hearing Device

Concept and Evaluation of a New Piezoelectric Transducer for an Implantable Middle Ear Hearing Device

Implantierbare Hörsysteme

Implantable hearing devices

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