ArticleScientific reports2019
Voltage readout from a piezoelectric intracochlear acoustic transducer implanted in a living guinea pig.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 32 citations in OpenAlex.
- Piezoelectric materials for surface modification of titanium-based implants: material design, biological mechanisms, and translational challenges.Frontiers in bioengineering and biotechnology · 2026Review
- Models of Cochlea Used in Cochlear Implant Research: A Review.Annals of biomedical engineering · 2023Review
- MEMS piezoelectric resonant microphone array for lung sound classification.Journal of micromechanics and microengineering : structures, devices, and systems · 2023Article
- Review
- Ultraminiature AlN diaphragm acoustic transducer.Applied physics letters · 2020Article
- Bioinspired Multiresonant Acoustic Devices Based on Electrospun Piezoelectric Polymeric Nanofibers.ACS applied materials & interfaces · 2020Article
- Relationships between Intrascalar Tissue, Neuron Survival, and Cochlear Implant Function.Journal of the Association for Research in Otolaryngology : JARO · 2020Article
- A Preliminary Prototype High-Speed Feedback Control of an Artificial Cochlear Sensory Epithelium Mimicking Function of Outer Hair Cells.Micromachines · 2020Article
- Utilizing Electrocochleography as a Microphone for Fully Implantable Cochlear Implants.Scientific reports · 2020Article
- Packaging Technology for an Implantable Inner Ear MEMS Microphone.Sensors (Basel, Switzerland) · 2019Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
The ability to measure the voltage readout from a sensor implanted inside the living cochlea enables continuous monitoring of intracochlear acoustic pressure locally, which could improve cochlear implants. We developed a piezoelectric intracochlear acoustic transducer (PIAT) designed to sense the acoustic pressure while fully implanted inside a living guinea pig cochlea. The PIAT, fabricated using micro-electro-mechanical systems (MEMS) techniques, consisted of an array of four piezoelectric cantilevers with varying lengths to enhance sensitivity across a wide frequency bandwidth. Prior to implantation, benchtop tests were conducted to characterize the device performance in air and in water. When implanted in the cochlea of an anesthetized guinea pig, the in vivo voltage response from the PIAT was measured in response to 80-95 dB sound pressure level 1-14 kHz sinusoidal acoustic excitation at the entrance of the guinea pig's ear canal. All sensed signals were above the noise floor and unaffected by crosstalk from the cochlear microphonic or external electrical interference. These results demonstrate that external acoustic stimulus can be sensed via the piezoelectric voltage response of the implanted MEMS transducer inside the living cochlea, providing key steps towards developing intracochlear acoustic sensors to replace external or subcutaneous microphones for auditory prosthetics.
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Registered trials
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