ArticleJournal of micromechanics and microengineering : structures, devices, and systems2024
The UmboMic: A PVDF Cantilever Microphone.
Article in Journal of micromechanics and microengineering : structures, devices, and systems, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Development of the Surgical Implantation and Fixation of an Implanted Middle Ear Microphone, the "UmboMic," in Cadaveric Sheep.Journal of the Association for Research in Otolaryngology : JARO · 2026Article
- The UmboMic: Characterization and Testing of a Middle Ear Microphone.Journal of the Association for Research in Otolaryngology : JARO · 2026Article
- Review
- A mechanical lumped-element model of the human middle ear for bone conduction hearing.Scientific reports · 2025Article
- Design of multi-bandwidth piezoelectric microelectromechanical systems accelerometers for totally implantable auditory prostheses: How many bandwidths are enough?The Journal of the Acoustical Society of America · 2025Article
- Optimal Position and Orientation of an Ossicular Accelerometer for Human Auditory Prostheses.Sensors (Basel, Switzerland) · 2024Article
- The UmboMic: A PVDF Cantilever Microphone.Journal of micromechanics and microengineering : structures, devices, and systems · 2024Article
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Authors and funding
9 authors.
Funding
Abstract
Objective: We present the "UmboMic," a prototype piezoelectric cantilever microphone designed for future use with totally-implantable cochlear implants. Methods: The UmboMic sensor is made from polyvinylidene difluoride (PVDF) because of its low Young's modulus and biocompatibility. The sensor is designed to fit in the middle ear and measure the motion of the underside of the eardrum at the umbo. To maximize its performance, we developed a low noise charge amplifier in tandem with the UmboMic sensor. This paper presents the performance of the UmboMic sensor and amplifier in fresh cadaveric human temporal bones. Results: When tested in human temporal bones, the UmboMic apparatus achieves an equivalent input noise of 32.3 dB SPL over the frequency range 100 Hz to 7 kHz, good linearity, and a flat frequency response to within 10 dB from about 100 Hz to 6 kHz. Conclusion: These results demonstrate the feasibility of a PVDF-based microphone when paired with a low-noise amplifier. The reported UmboMic apparatus is comparable in performance to a conventional hearing aid microphone. Significance: The proof-of-concept UmboMic apparatus is a promising step towards creating a totally-implantable cochlear implant. A completely internal system would enhance the quality of life of cochlear implant users.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.