An Incus-Body Driving Type Piezoelectric Middle Ear Implant Design and Evaluation in 3D Computational Model and Temporal Bone
| Autor: | Na Ta, Xinsheng Huang, Zhushi Rao, Jiabin Tian, Houguang Liu, Gang Cheng |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Article Subject Acoustics Incus lcsh:Medicine Ear Middle lcsh:Technology Models Biological General Biochemistry Genetics and Molecular Biology Displacement (vector) otorhinolaryngologic diseases medicine Humans Computer Simulation lcsh:Science General Environmental Science Stapes Coupling lcsh:T lcsh:R Volt General Medicine Piezoelectricity Biomechanical Phenomena Ossicular Prosthesis Transducer medicine.anatomical_structure Middle ear lcsh:Q sense organs Research Article |
| Zdroj: | The Scientific World Journal The Scientific World Journal, Vol 2014 (2014) |
| ISSN: | 1537-744X 2356-6140 |
| DOI: | 10.1155/2014/121624 |
| Popis: | A new incus-body driving type transducer relying on piezoelectric stack, with broad frequency bandwidth, is proposed for use in a middle ear implant. To aid the design process of this transducer, a coupling biomechanical model of the human middle ear and the piezoelectric transducer was established by reverse engineering technology. The validity of this model was confirmed by comparing model predicted motions with experimental measurements. Based on this verified biomechanical model, the main parameters of the transducer were determined. And its power consumption was calculated. Finally, to verify the capability of the designed piezoelectric transducer, a human temporal bone experimental platform was built. And the dynamic characteristics and the stimulated performance of the piezoelectric transducer were tested. The result showed that stapes displacement stimulated by the transducer excitation at 10.5 V RMS was equivalent to that from acoustic stimulation at 100 dB SPL, which is an adequate stimulation to the ossicular chain. The corresponding power consumption is 0.31 mW per volt of excitation at 1 kHz, which is low enough for the transducer to be used in a middle ear implant. Besides, this transducer demonstrates high performance at high frequencies. |
| Databáze: | OpenAIRE |
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