Implementation of implantable microphone in the middle ear cavity and telemetry module

2012 ◽  
Author(s):  
S. H. Arman Woo ◽  
Hui-Sup Cho ◽  
Il Hyung Luke Park ◽  
Byung Seop Song
Keyword(s):  
Middle Ear ◽  
Implantable Microphone

Feasibility test of implantable microphone at middle ear cavity

2013 ◽  
Vol 49 (13) ◽  
pp. 784-786 ◽  
Author(s):  
S.H.A. Woo ◽  
J.W. Lee ◽  
I‐Y. Park ◽  
B.S. Song
Keyword(s):  
Middle Ear ◽  
Implantable Microphone ◽  
Feasibility Test

scholarly journals Implementation of a fully implantable middle-ear hearing device chip

2021 ◽  
Vol 29 ◽  
pp. 399-413
Author(s):  
Jyung Hyun Lee ◽  
Dong Wook Kim ◽  
Ki Woong Seong ◽  
Myoung Nam Kim ◽  
Jin-Ho Cho
Keyword(s):  
Signal Processing ◽  
Middle Ear ◽  
Hearing Aids ◽  
Cmos Process ◽  
Verilog Hdl ◽  
Pulse Density ◽  
Implantable Microphone ◽  
Hearing Device ◽  
Point Fast Fourier Transform ◽  
Signal Processor

BACKGROUND AND OBJECTIVE: Recently, with the increase in the population of hearing impaired people, various types of hearing aids have been rapidly developed. In particular, a fully implantable middle ear hearing device (F-IMEHD) is developed for people with sensorineural hearing loss. The F-IMEHD system comprises an implantable microphone, a transducer, and a signal processor. The signal processor should have a small size and consume less power for implantation in a human body. METHODS: In this study, we designed and fabricated a signal-processing chip using the modified FFT algorithm. This algorithm was developed focusing on eliminating time delay and system complexity in the transform process. The designed signal-processing chip comprises a 4-channel WDRC, a fitting memory, a communication 1control part, and a pulse density modulator. Each channel is separated using a 64-point fast Fourier transform (FFT) method and the gain value is matched using the fitting table in the fitting memory. RESULTS AND CONCLUSION: The chip was designed by Verilog-HDL and the designed HDL codes were verified by Modelsim-PE 10.3 (Mentor graphics, USA). The chip was fabricated using a 0.18 μm CMOS process (SMIC, China). Experiments were performed on a cadaver to verify the performance of the fabricated chip.

UTILIZATION OF THE MECHANICS OF THE MIDDLE EAR FOR AN IMPLANTABLE MICROPHONE

2004 ◽  
Author(s):  
KARL-BERND HÜTTENBRINK ◽  
THOMAS ZAHNERT ◽  
MATTHIAS BLAU ◽  
GERT HOFMANN
Keyword(s):  
Middle Ear ◽  
Implantable Microphone

scholarly journals A Vibro-Acoustic Hybrid Implantable Microphone for Middle Ear Hearing Aids and Cochlear Implants

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1117
Author(s):  
Ki Seong ◽  
Ha Mun ◽  
Dong Shin ◽  
Jong Kim ◽  
Hideko Nakajima ◽  
...  
Keyword(s):  
Cochlear Implants ◽  
Middle Ear ◽  
Hearing Aids ◽  
Sound Pressure ◽  
Pressure Sensors ◽  
High Sensitivity ◽  
Micro Electro Mechanical System ◽  
Acoustic Sensors ◽  
Human Temporal Bone ◽  
Implantable Microphone

To develop totally implantable middle ear and cochlear implants, a miniature microphone that is surgically easy to implant and has a high sensitivity in a sufficient range of audio frequencies is needed. Of the various implantable acoustic sensors under development, only micro electro-mechanical system-type acoustic sensors, which attach to the umbo of the tympanic membrane, meet these requirements. We describe a new vibro-acoustic hybrid implantable microphone (VAHIM) that combines acceleration and sound pressure sensors. Each sensor can collect the vibration of the umbo and sound pressure of the middle ear cavity. The fabricated sensor was implanted into a human temporal bone and the noise level and sensitivity were measured. From the experimental results, it is shown that the proposed method is able to provide a wider-frequency band than conventional implantable acoustic sensors.

Feedback characteristics between implantable microphone and transducer in middle ear cavity

2013 ◽  
Vol 15 (5) ◽  
pp. 867-877 ◽  
Author(s):  
S. H. Arman Woo ◽  
Seong Tak Woo ◽  
Byung Seop Song ◽  
Jin-Ho Cho
Keyword(s):  
Middle Ear ◽  
Implantable Microphone

scholarly journals Study on frequency response of implantable microphone and vibrating transducer for the gain compensation of implantable middle ear hearing aid

2010 ◽  
Vol 19 (5) ◽  
pp. 361-368 ◽  
Author(s):  
Eui-Sung Jung ◽  
Ki-Woong Seong ◽  
Hyung-Gyu Lim ◽  
Jang-Woo Lee ◽  
Dong-Wook Kim ◽  
...  
Keyword(s):  
Frequency Response ◽  
Middle Ear ◽  
Hearing Aid ◽  
Implantable Microphone ◽  
Gain Compensation

scholarly journals A Retrospective Multicentre Cohort Review of Patient Characteristics and Surgical Aspects versus the Long-Term Outcomes for Recipients of a Fully Implantable Active Middle Ear Implant

2016 ◽  
Vol 21 (5) ◽  
pp. 333-345 ◽  
Author(s):  
Philippe P. Lefebvre ◽  
Javier Gisbert ◽  
Domenico Cuda ◽  
Stéphane Tringali ◽  
Arnaud Deveze
Keyword(s):  
Middle Ear ◽  
Influencing Factor ◽  
Patient Characteristics ◽  
Active Middle Ear Implant ◽  
Middle Ear Implant ◽  
Hearing Aid Use ◽  
Implantable Microphone ◽  
Patient Variables ◽  
Surgical Aspects ◽  
Over Time

Objective: To summarise treatment outcomes compared to surgical and patient variables for a multicentre recipient cohort using a fully implantable active middle ear implant for hearing impairment. To describe the authors' preferred surgical technique to determine microphone placement. Study Design: Multicentre retrospective, observational survey. Setting: Five tertiary referral centres. Patients: Carina recipients (66 ears, 62 subjects) using the current Cochlear® Carina® System or the legacy device, the Otologics® Fully Implantable Middle Ear, with a T2 transducer. Methods: Patient file review and routine clinical review. Patient outcomes assessed were satisfaction, daily use and feedback reports at the first fitting and ≥12 months after implantation. Descriptive and statistical analysis of correlations of variables and their influence on outcomes was performed. Independently reported preferred methods for microphone placement are collectively summarised. Results: The average implant experience was 3.5 years. Satisfaction increased significantly over time (p < 0.05). No correlation with covariates examined was observed. Feedback significantly decreased over time, showing a significant correlation with microphone location, primary motivation, gender, age at implantation, and contralateral hearing aid use (p < 0.05). Patient satisfaction was inversely correlated with reports of system feedback (p < 0.05). The implantable microphone was most commonly on the posterior inferior mastoid line, in 42/66 (65%) cases, correlating with less likelihood for feedback and consistent with author surgical preference. Conclusion: Carina recipients in this study present as satisfied consistent daily users with very few reports of persistent feedback. As microphone location is an influencing factor, a careful surgical consideration of microphone placement is required. The authors prefer a posterior inferior mastoid line position whenever possible.

The Effect of Stapedectomy on the Loudness of One’s Own Voice

1965 ◽  
Vol 8 (3) ◽  
pp. 223-234 ◽  
Author(s):  
William Melnick
Keyword(s):  
Middle Ear ◽  
Normal Subjects ◽  
Sound Energy ◽  
Loudness Function ◽  
Before And After ◽  
Increased Sensitivity

Five subjects with normal middle ear mechanisms, and otosclerotic patients, before and after stapedectomy, matched the loudness of their voices to the loudness of a 125-cps-sawtooth noise. The results showed loudness matching functions with gradual slopes, less than 1.00, for the normal subjects and the patients prior to stapedectomy. Post-surgically, the loudness function for the patients increased in steepness to considerably more than 1.00. These results are explained, most logically, in terms of increased sensitivity of the altered middle ear to sound energy generated by the listener’s own voice.

Do seasonal priming effects in the first months of life influence development of middle ear disease?

1998 ◽  
Vol 23 (3) ◽  
pp. 274-274
Author(s):  
Gannon ◽  
Greenwood ◽  
Haggard
Keyword(s):  
Middle Ear ◽  
Priming Effects ◽  
Middle Ear Disease

Are mucin genes yet to be cloned expressed by human middle ear mucosa?

1998 ◽  
Vol 23 (3) ◽  
pp. 265-265 ◽  
Author(s):  
Hutton ◽  
Birchall ◽  
French ◽  
Kubba ◽  
Severn ◽  
...  
Keyword(s):  
Middle Ear ◽  
Middle Ear Mucosa ◽  
Mucin Genes ◽  
Human Middle Ear
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