Differential floating mass type vibration transducer for MEI system

A new of vibration transducer, a DFMT (differential floating mass type) is introduced for use in an MEI (middle ear implant) system. The DFMT transducer is not influenced by external noise magnetic flux and has a very high vibration efficiency because its two magnets, which are glued back to back with the same poles facing, are located in the coil.

[1]  M Chasin,et al.  Current Trends in Implantable Hearing Aids , 1997, Trends in amplification.

[2]  T. G. Dietz,et al.  Partially implantable vibrating ossicular prosthesis , 1997, Proceedings of International Solid State Sensors and Actuators Conference (Transducers '97).

[3]  D. Cheng.  Field and wave electromagnetics , 1983 .

[4]  J M Fredrickson,et al.  Ongoing investigations into an implantable electromagnetic hearing aid for moderate to severe sensorineural hearing loss. , 1995, Otolaryngologic clinics of North America.

[5]  W H Ko,et al.  Engineering principles of mechanical stimulation of the middle ear. , 1995, Otolaryngologic clinics of North America.

[6]  Yong-Ik Yoon,et al.  Design of a magnetic coupling type implantable middle ear hearing aid , 1998, Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286).

[7]  W. Ko,et al.  Contactless semi-implantable electromagnetic middle ear device for the treatment of sensorineural hearing loss. Short-term and long-term animal experiments. , 1995, Otolaryngologic clinics of North America.

[8]  W. Affane,et al.  A microminiature electromagnetic middle-ear implant hearing device , 1995 .