Piezoelectric Multi-Channel Bilayer Transducer for Sensing and Filtering Ossicular Vibration.

ABSTRACT: This paper presents an acoustic transducer for fully implantable cochlear implants (FICIs), which can be implanted on the hearing chain to detect and filter the ambient sound in eight frequency bands between 250 and 6000 Hz. The transducer dimensions are conventional surgery compatible. The structure is formed with 3  × 3 × 0.36 mm active space for each layer and 5.2 mg total active mass excluding packaging. Characterization of the transducer is carried on an artificial membrane whose vibration characteristic is similar to the umbo vibration. On the artificial membrane, piezoelectric transducer generates up to 320.3 mV_pp under 100 dB sound pressure level (SPL) excitation and covers the audible acoustic frequency. The measured signal-to-noise-ratio (SNR) of the channels is up to

SUBMITTER: Yuksel MB 

PROVIDER: S-EPMC11040378 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature