Surgery – Surgically implanted vibratory hearing aid
Patent
1997-10-24
2000-05-30
Lacyk, John P.
Surgery
Surgically implanted vibratory hearing aid
607 55, H04R 2500
Patent
active
060685905
ABSTRACT:
A device for diagnosing and treating hearing disorders including a supersonic transducer which has a resonance frequency in the supersonic range. The transducer includes a piezoelectric ceramic tube which is compressed between a head mass and an inertial mass. A tensioning rod extends between the masses and is threadedly engaged with a nut which tensions the rod to adjust the compression on the ceramic tube. A tuning circuit can be used to increase the band width at resonance.
REFERENCES:
patent: 4982434 (1991-01-01), Lenhardt et al.
Shunichi Kono, et al, Some Consideration on the Auditory Perception of Ultrasound and Its Effects on Hearing, Journal of the Accustical Society of Japan (1985).
Lenhardt et al "Human Ultrasonic Speech Perception," Science, vol. 253, p. 82-84 (1991).
Camp "Underwater Acoustics", Wiley-Interscience, 1970.
Rosenthal et al "Vibrations of Ferroelectric Transducer Elements Loaded by Masses and Acoustic Radiation", IRE National Conventional Record 7, Part 6, 252.
Mason "Physical Acoustics, Principles and Methods", vol. 1, Part A, Academic Press, 1964.
Woollett, IRE International Convention Record 10, Part 6, p. 90, 1962.
Tims et al Piezoelectric Ceramic Reproducibility (for 33 Mode Transducer Application), Proceedings of the 6th IEEE International Symposium on Applns. of Ferroelectics, Lehigh U., Bethlehem, PA, p. 6245-627, Jun. 8-11, 1986.
Lan et al "Development of an Efficient Transducer Design Tool: Complete Finite Element Modeling of Transducer Performance Parameters on a PC", SPIE vol. 1733, 1992 p. 57-71.
Hearing Innovations, Inc.
Lacyk John P.
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