WO1992003893A1 - Prothese auditive electromagnetique de l'oreille moyenne - Google Patents

Prothese auditive electromagnetique de l'oreille moyenne Download PDF

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Publication number
WO1992003893A1
WO1992003893A1 PCT/EP1991/000888 EP9100888W WO9203893A1 WO 1992003893 A1 WO1992003893 A1 WO 1992003893A1 EP 9100888 W EP9100888 W EP 9100888W WO 9203893 A1 WO9203893 A1 WO 9203893A1
Authority
WO
WIPO (PCT)
Prior art keywords
hearing aid
permanent magnet
ear
aid according
sound
Prior art date
Application number
PCT/EP1991/000888
Other languages
German (de)
English (en)
Inventor
Georg Schmid
Hans Georg Kimmerle
Original Assignee
Georg Schmid
Hans Georg Kimmerle
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Georg Schmid, Hans Georg Kimmerle filed Critical Georg Schmid
Priority to DE59102284T priority Critical patent/DE59102284D1/de
Priority to EP91909548A priority patent/EP0544677B1/fr
Publication of WO1992003893A1 publication Critical patent/WO1992003893A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • H04R25/606—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers acting directly on the eardrum, the ossicles or the skull, e.g. mastoid, tooth, maxillary or mandibular bone, or mechanically stimulating the cochlea, e.g. at the oval window

Definitions

  • the invention relates to an electromagnetic, to the middle ear of the hearing aid act ⁇ for sound-induced transmission of electromagnetic pulses to the middle ear.
  • the previous conventional signal transmission in hearing aids is based on the principle of electroacoustic sound amplification.
  • the incoming sound waves are recorded via a microphone, converted into electrical impulses (AC voltage), amplified and modified and then emitted to the ear via a receiver.
  • AC voltage electrical impulses
  • the partial or total closure of the ear canal entrance is necessary (otoplastic).
  • the otoplastic has considerable disadvantages, both in the medical and in the acoustic field.
  • the otoplastic In addition to the deterioration of these static conditions, which are predetermined by the anatomy of the auditory canal and the sound circuit apparatus, the otoplastic also influences the impedance matching; i.e. the auditory canal body has a negative effect on the dynamic adaptability of the ear to different volume situations.
  • the human ear can optimally adjust to certain listening situations, e.g. Setting for quiet tones, hearing in the noise environment.
  • the stapedius muscle protects the ear from overlaid sound impulses that may damage the inner ear by changing the impedance. This double dynamic impedance adaptation is considerably worsened by the otoplastic.
  • an implantable electromagnetic hearing aid which consists of an essentially conventional hearing aid, the output signal, an electromagnetic analog signal, is emitted by a transmitter.
  • An associated recipient is implanted subcutaneously in the temporal nodes.
  • a line also implanted in the temporal bone, leads to a receiving device, an electromagnetic transducer, which then emits an electromagnetic signal and transmits it subcutaneously into the middle ear Permanent magnet implanted in or on the ossicular chain, which is set into corresponding vibrations by the electromagnetic vibrations, and thus is intended to set parts of the ossicular chain in vibration according to the scarf l picked up by the hearing aid.
  • This known implantable middle ear hearing aid requires not only extensive implantations of two transducers connected to one another by lines which have to be implanted in the temporal bone, but especially in the case of partially or completely destroyed ossicular chains, an implantation of the permanent magnet in the area of the ossicular chain with action on parts of the ossicular chain. If at all, this seems to be feasible with extreme precision in microsurgery. Some of the variants disclosed, on the other hand, seem to be hardly feasible, since the permanent magnet inevitably slips when vibrated and falls into the drumstick.
  • Piezoelectric, ceramic, bimorph vibrating devices are implanted in the middle ear, which are excited to vibrate. These piezoelectric vibrators are excited by lines for sound transmission to the inner ear.
  • Both previously known implantable middle ear hearing aids are primarily intended for pathological changes in the area of the middle ear, e.g. when the ossicular chain is partially or completely destroyed, although a variant has become known in which the ossicular chain appears to be in order. In all other cases, the use of these implants would result in the destruction of the natural sound transmission chain.
  • the arrangement of the vibrating device in the area of the ossicular chain means that for the surgeon exact control of the position of the permanent magnet implanted as vibrating device is no longer possible post-operatively.
  • the material used in the known vibrating device is a ceramic-magnetic, biocompatible material which is very difficult to machine and whose magnetic properties can be impaired and weakened during operative post-processing.
  • None of the implantable hearing aids known to date can do without implanted leads or electrodes and therefore requires extensive, difficult implantation microsurgery in the area of the temporal bone and in the middle ear area.
  • the invention does not relate to the surgical correction of pathological processes in the middle ear in the area of the ossicular chain or the ossicles, but rather is based on a sound-sensitive hearing loss with a completely or largely intact ear drum 1 and complete ossicular chain and should be in place the previous one - sr -
  • Hearing aid supply can be used as an alternative, particularly in the case of sound sensation difficulties.
  • Fig. 1 is a cross-sectional view of the constructed according to the invention
  • Fig. 2 is a greatly enlarged view of the arrangement of the permanent magnet in the area of the eardrum and - Q - -
  • Fig. 3 schematically the arrangement of the modified hearing aid used for this purpose.
  • Fig. 1 shows the pinna 1, to which the auditory canal 2 connects, which is closed off by the drum tube 3.
  • the ossicular chain 4 with the hammer 5 with hammer head ⁇ and hammer handle 7. This is followed by the anvil 8 and the stirrup 9.
  • a hearing aid 10 which contains a coil part with an electromagnetic transducer 11 (FIG. 3).
  • the permanent magnet 12 is shown in FIG. 1 and also in Fig. 2 to see.
  • the hammer grip 7 is normally grown together with the eardrum 3.
  • the drumhead l 3 is loosened approximately in the middle of the hammer handle 7 from this and the permanent magnet 1 2 is inserted so that it rests with its back on the eardrum and at least partially encompasses the hammer handle.
  • the sound 1 picked up by the microphone of the actual hearing aid to be worn behind the ear is transmitted directly to the permanent magnet 1 2 after amplification via the electromagnetic transducer designed as a coil part 1.
  • these sound vibrations are increasingly transmitted to the middle ear via the permanent magnet.
  • the eardrum l is set into corresponding vibrations, which are superimposed on the sound arriving at the eardrum through the ear canal.
  • the invention thus created a new implantable hearing aid which is a useful alternative for patients who have difficulties with in-the-ear hearing aids or with otoplastics or hearing olives.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Neurosurgery (AREA)
  • Signal Processing (AREA)
  • Prostheses (AREA)
  • Headphones And Earphones (AREA)
  • Dental Preparations (AREA)
  • Filters And Equalizers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Magnetic Treatment Devices (AREA)
  • Electrically Operated Instructional Devices (AREA)

Abstract

L'invention concerne une prothèse auditive de l'oreille moyenne (10) comportant un microphone placé dans un boîtier, un amplificateur avec une alimentation en courant et un transformateur de sortie ainsi qu'un dispositif vibrant (12) pouvant être implanté et susceptible d'être excité par le transformateur de sortie de manière à produire des oscillations, dispositif qui peut être implanté entre la membrane (3) du tympan et le manche (7) du marteau, le transformateur de sortie produisant des oscillations électromagnétiques qui créent dans un aimant permanent (12) présentant une polarisation déterminée et servant de dispositif vibrant, des oscillations qui sont transmises au manche (7) du marteau et à la membrane (3) du tympan.
PCT/EP1991/000888 1990-08-24 1991-05-14 Prothese auditive electromagnetique de l'oreille moyenne WO1992003893A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59102284T DE59102284D1 (de) 1990-08-24 1991-05-14 Elektromagnetisches mittelohr-hörhilfsgerät.
EP91909548A EP0544677B1 (fr) 1990-08-24 1991-05-14 Prothese auditive electromagnetique de l'oreille moyenne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4026766A DE4026766A1 (de) 1990-08-24 1990-08-24 Elektromagnetisches mittelohr-hoerhilfsgeraet
DEP4026766.0 1990-08-24

Publications (1)

Publication Number Publication Date
WO1992003893A1 true WO1992003893A1 (fr) 1992-03-05

Family

ID=6412820

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/000888 WO1992003893A1 (fr) 1990-08-24 1991-05-14 Prothese auditive electromagnetique de l'oreille moyenne

Country Status (6)

Country Link
EP (1) EP0544677B1 (fr)
AT (1) ATE108970T1 (fr)
AU (1) AU7870091A (fr)
DE (2) DE4026766A1 (fr)
DK (1) DK0544677T3 (fr)
WO (1) WO1992003893A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0719071A1 (fr) 1994-12-21 1996-06-26 Viennatone Aktiengesellschaft Prothèse auditive avec microphone de référence
US5797834A (en) * 1996-05-31 1998-08-25 Resound Corporation Hearing improvement device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10030372C2 (de) * 2000-06-16 2002-04-25 Univ Dresden Tech Implantierbarer hydroakustischer Wandler
DE102004038078B4 (de) * 2004-07-30 2010-11-25 Technische Universität Dresden Implantierbarer Hörgeräteteil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE833809A (fr) * 1975-09-25 1976-03-25 Prothese auditive et procede d'examen et de correction prothetique de l'audition
US4606329A (en) * 1985-05-22 1986-08-19 Xomed, Inc. Implantable electromagnetic middle-ear bone-conduction hearing aid device
EP0291325A2 (fr) * 1987-05-15 1988-11-17 SMITH & NEPHEW RICHARDS, INC. Prothèse magnétique de remplacement d'osselets

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE833809A (fr) * 1975-09-25 1976-03-25 Prothese auditive et procede d'examen et de correction prothetique de l'audition
US4606329A (en) * 1985-05-22 1986-08-19 Xomed, Inc. Implantable electromagnetic middle-ear bone-conduction hearing aid device
EP0291325A2 (fr) * 1987-05-15 1988-11-17 SMITH & NEPHEW RICHARDS, INC. Prothèse magnétique de remplacement d'osselets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0719071A1 (fr) 1994-12-21 1996-06-26 Viennatone Aktiengesellschaft Prothèse auditive avec microphone de référence
US5797834A (en) * 1996-05-31 1998-08-25 Resound Corporation Hearing improvement device

Also Published As

Publication number Publication date
ATE108970T1 (de) 1994-08-15
DE4026766A1 (de) 1992-02-27
EP0544677B1 (fr) 1994-07-20
EP0544677A1 (fr) 1993-06-09
DK0544677T3 (da) 1994-09-26
AU7870091A (en) 1992-03-17
DE59102284D1 (de) 1994-08-25

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