WO2012076060A2 - Organe de commande implantable d'une aide auditive - Google Patents

Organe de commande implantable d'une aide auditive Download PDF

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Publication number
WO2012076060A2
WO2012076060A2 PCT/EP2010/069262 EP2010069262W WO2012076060A2 WO 2012076060 A2 WO2012076060 A2 WO 2012076060A2 EP 2010069262 W EP2010069262 W EP 2010069262W WO 2012076060 A2 WO2012076060 A2 WO 2012076060A2
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
assembly
mobile assembly
mobile
hearing
Prior art date
Application number
PCT/EP2010/069262
Other languages
English (en)
Other versions
WO2012076060A3 (fr
Inventor
Marie-Nathalie Castel
Pierre-Yves Clair
Elisa Munafò
Original Assignee
Advanced Bionics Ag
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 Advanced Bionics Ag filed Critical Advanced Bionics Ag
Priority to PCT/EP2010/069262 priority Critical patent/WO2012076060A2/fr
Publication of WO2012076060A2 publication Critical patent/WO2012076060A2/fr
Publication of WO2012076060A3 publication Critical patent/WO2012076060A3/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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/67—Implantable hearing aids or parts thereof not covered by H04R25/606

Definitions

  • the invention relates to an implantable actuator of an at least partially implantable hearing instrument, the actuator comprising a housing, a mobile assembly and a driver assembly, wherein the mobile assembly is driven by the driver assembly and is coupled to a middle ear or inner ear component of a patient's hearing for vibrating that hearing component in order to stimulate the patient's hearing.
  • WO 2006/058368 Al relates to a partially implantable hearing instrument comprising an implantable electromagnetic actuator comprising a rod-like mobile assembly having a first portion made of a soft magnetic material and including an armature and a second portion made of titanium and extending outside the actuator housing, which second portion forms a coupling rod with an artificial incus at its end.
  • the actuator housing contains a coil for driving the first portion o the mobile assembly.
  • the first portion and the second portion of the mobile assembly are connected by a press-fitting process.
  • press-fit of the two portions requires a certain minimum diameter of the components in the press-fit region.
  • US 5,226,579 relates to an explosion bonding process for producing a metal composite which may be used for manufacturing reaction vessels for producing fluorocarbons.
  • US 2004/0134306 Al relates to a bi-material connecting rod for an engine which is manufactured by a bi-material sintering process.
  • WO 99/62415 A l relates to an anastomotic connector for attaching two blood vessels which consists of different materials and which may be sintered from powdered metals.
  • US 2007/0250158 Al relates to a stent comprising two layers which may be bonded by techniques like explosion welding or sintering.
  • US 4,612,259 relates to explosion welding of titanium clad steel plates.
  • US 6,612, 478 relates to explosion welding in manufacturing of X- ray tubes.
  • US 2007/0129785 A 1 relates to a stent having segments which are attached to each other by techniques like explosion bonding and sintering, wherein one segment may be made of a titanium alloy and the other segment can be made of nitinol.
  • the invention is beneficial in that, by making the mobile assembly of a single piece by bi- material sintering or explosion bonding of the first and second metallic material, the need for a press-fit connection between the two portions of the mobile assembly is eliminated, thereby enhancing yield of the manufacturing process and thus reducing costs.
  • Fig. 1 is a schematic cross-sectional view of an example of a hearing instrument using an implantable actuator according to the invention after implantation:
  • Fig. 2 is a block diagram of the system of Fig. 1 ;
  • Fig. 3 is a perspective view of an example of an actuator according to the invention prior to implantation
  • Fig. 4 is a longitudinal sectional view of the actuator of Fig. 3, shown together with an explosive view of the components of the actuator;
  • Fig. 5 is a perspective view of an example of a mobile assembly of an. actuator according to the invention.
  • Fig. 6 is a schematic representation of an example of a manufacturing process of a mobile assembly according to the invention using bi-material sintering
  • Fig. 7 is a representation like Fig. 6, wherein, however, the manufacturing process uses explosion bonding.
  • Fig. 1 shows a cross-sectional view of the mastoid region, the middle ear and the inner ear of a patient after implantation of an actuator f an example of a hearing aid according to the invention, wherein the hearing aid is shown only schematically.
  • the system comprises an external unit 10, which is worn outside the patient's body at the patient's head, and an implantable unit 12, which is implanted under the patient's skin 14, usually in an artificial bed created in the user's mastoid.
  • the implantable unit 12 is connected via a cable assembly 1 8 lo an actuator 20. While in Fig.
  • an electromechanical actuator coupled to an ossicle 22 via a coupling rod 24 is shown, the actuator 20 also may be an electromechanical actuator coupled directly to the cochlear wall, e.g. an artificial incus is coupled to a stapes prosthesis moving through the oval window.
  • the external unit 10 is fixed at the patient's skin 14 in a position opposite to the implantable unit 12, for example, by magnetic forces created between a magnetic fixation arrangement 26 provided in the external unit 10 and a cooperating magnetic fixation arrangement 28 provided in the implantable unit 12, respectively.
  • the external unit 10 includes a microphone arrangement 28, which typically comprises at least two spaced-apart microphones 30 and 32 for capturing audio signals from ambient sound, which audio signals are supplied to an audio signal processing unit 34, wherein they undergo, for example, acoustic beam forming.
  • the processed audio signals are supplied to a transmission unit 36 connected to a transmission antenna 38 in order to enable transcutaneous transmission of the processed audio signals via an inductive link 40 to the implantable unit 12 which comprises a receiver antenna 42 connected to a receiver unit 44 for receiving the transmitted audio signals.
  • the received audio signals are supplied to a driver unit 48 which drives the actuator 20.
  • the external unit 10 also comprises a power supply 50 which may he a replaceable or rechargeable battery, a power transmission unit 52 and a power transmission antenna 54 for > transmitting power to the implantable unit 12 via a wireless power link 56.
  • the implantable unit 12 comprises a power receiving antenna 58 and a power receiving unit 60 for powering the implanted electronic components with power received via the power link 56.
  • the audio signal antennas 38, 42 are separated from the power antennas 54. 58 in order to optimize both the audio signal link 40 and the power link 56.
  • the antennas 38 and 54 and the antennas 42 and 58 could be physically formed by a single antenna, respectively.
  • the actuator 20 comprises a housing 62. a driver assembly 64 located within the housing 62 and a mobile assembly 66 driven by the driver assembly 64 and extending beyond the housing 62.
  • the driver assembly comprises a coil 68 having a shell 70.
  • the actuator 20 also comprises a lower magnet assembly 72 and an upper magnet assembly 74 which are surrounded by an annealed iron tube 76.
  • the distal side of the housing 62 is closed by a membrane 78.
  • the mobile assembly 66 comprises a first, proximal portion 80 including an armature 82 and a second, distal portion 84.
  • the first portion 80 is made of a magnetic material, for example a permenorm alloy, and comprises a rod-like part 81 which extends axial ly within the coil 68.
  • the armature 82 is located at the distal end of the rod-like part 81 between the lower magnet assembly 72 and the upper magnet assembly 74.
  • the armature 82 has a flange-like shape and is located adjacent to the second portion 84 which extends through a hermetically sealed opening 86 in the membrane 78 beyond the housing 62.
  • the driver assembly 64 and the first portion 80 of the mobile assembly 66 thereby form an electromagnetic motor which imparts an axially reciprocating movement to the first portion 80.
  • the second portion 84 has a rod-like shape and is made of a biocompatible material, such as titanium, and, at its distal end, may comprise an artificial incus 88 which is to be coupled to a stapes prosthesis (not shown in Fig. 3).
  • the general structure of the actuator 20 is similar to that described in WO 2006/058368 Al, apart from the specific structure of the mobile assembly 66 as described hereinafter.
  • the mobile assembly 66 is made of a single piece by bi-material sintering or explosion bonding/welding of the material of the first portion 80 and of the material of the second portion 84.
  • FIG. 6 An example of a bi-material sintering process is schematically shown in Fig. 6, according to which the material 90 of the first portion 80 is injected, as a magnetic metal powder, into a first cavity 92 of a bi-material mold 94, and the material 96 of the second portion 84 is injected, as a biocompatible metal powder, into a second cavity 98 of the mold 94. with the cavities 92, 98 communicating in a central region. After powder injection, the first and second material 90, 96 are sintered within the mold 94 in order to obtain a blank, which, after removal from the mold 94, is machined and finished to obtain the mobile assembly 66.
  • the mobile assembly 66 may be manufactured by explosion bonding.
  • An example is schematically shown in Fig. 7, wherein first a layer 100 of the magnetic metal material of the first portion 80 and a layer 102 of the biocompatible metal material of the second portion 84 are provided, and wherein the two layers 100, 102 are bond together by explosion welding by detonating an explosive layer 104 applied to one of the layers 100,102, thereby obtaining a blank 106 which then is machined and finished to obtain the mobile assembly 66.

Abstract

La présente invention concerne un organe de commande implantable d'un instrument auditif au moins partiellement implantable, comprenant un boîtier (62), un ensemble mobile (66) et un ensemble entraîneur (64), l'ensemble mobile comprenant une première partie (80) fabriquée dans un premier matériau métallique et couplé à l'ensemble entraîneur de façon à être entraîné par l'ensemble entraîneur et une seconde partie (84) adjacente à la première partie et fabriquée dans un second matériau métallique différent du premier matériau, la seconde partie étant destinée à être couplée à un composant de l'oreille moyenne (22) ou de l'oreille interne de l'oreille d'un patient pour faire vibrer ce composant de l'audition afin de stimuler l'audition du patient, l'ensemble entraîneur et la seconde partie de l'ensemble mobile se trouvant à l'intérieur du boîtier, et l'ensemble mobile étant fabriqué en un seul bloc par frittage de bi-matériaux ou par liaison par explosion du premier et du second matériau.
PCT/EP2010/069262 2010-12-09 2010-12-09 Organe de commande implantable d'une aide auditive WO2012076060A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/069262 WO2012076060A2 (fr) 2010-12-09 2010-12-09 Organe de commande implantable d'une aide auditive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/069262 WO2012076060A2 (fr) 2010-12-09 2010-12-09 Organe de commande implantable d'une aide auditive

Publications (2)

Publication Number Publication Date
WO2012076060A2 true WO2012076060A2 (fr) 2012-06-14
WO2012076060A3 WO2012076060A3 (fr) 2012-08-16

Family

ID=44624949

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/069262 WO2012076060A2 (fr) 2010-12-09 2010-12-09 Organe de commande implantable d'une aide auditive

Country Status (1)

Country Link
WO (1) WO2012076060A2 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612259A (en) 1981-03-05 1986-09-16 Asahi Kasei Kogyo Kabushiki Kaisha Titanium clad steel plate
US5226579A (en) 1992-02-14 1993-07-13 E. I. Du Pont De Nemours And Company Process for explosively bonding metals
WO1999062415A1 (fr) 1998-05-29 1999-12-09 By-Pass, Inc. Techniques et dispositifs de chirurgie vasculaire
US6612478B2 (en) 2001-05-14 2003-09-02 Varian Medical Systems, Inc. Method for manufacturing x-ray tubes
US20040134306A1 (en) 2003-01-14 2004-07-15 Fuping Liu Bi-material connecting rod
WO2006058368A1 (fr) 2004-11-30 2006-06-08 Cochlear Acoustics Ltd Actionneur implantable pour des applications d'aide auditive
US20070129785A1 (en) 2005-11-14 2007-06-07 Ev3, Inc. Stent and stent delivery system for ostial locations in a conduit
US20070250158A1 (en) 2006-04-25 2007-10-25 Medtronic Vascular, Inc. Laminated Implantable Medical Device Having a Metallic Coating
US20080241570A1 (en) 2007-03-26 2008-10-02 Howmedica Osteonics Corp. Method for fabricating a medical component from a material having a high carbide phase and such medical component

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19840211C1 (de) * 1998-09-03 1999-12-30 Implex Hear Tech Ag Wandler für teil- oder vollimplantierbare Hörgeräte
US7153257B2 (en) * 2004-04-09 2006-12-26 Otologics, Llc Implantable hearing aid transducer system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612259A (en) 1981-03-05 1986-09-16 Asahi Kasei Kogyo Kabushiki Kaisha Titanium clad steel plate
US5226579A (en) 1992-02-14 1993-07-13 E. I. Du Pont De Nemours And Company Process for explosively bonding metals
WO1999062415A1 (fr) 1998-05-29 1999-12-09 By-Pass, Inc. Techniques et dispositifs de chirurgie vasculaire
US6612478B2 (en) 2001-05-14 2003-09-02 Varian Medical Systems, Inc. Method for manufacturing x-ray tubes
US20040134306A1 (en) 2003-01-14 2004-07-15 Fuping Liu Bi-material connecting rod
WO2006058368A1 (fr) 2004-11-30 2006-06-08 Cochlear Acoustics Ltd Actionneur implantable pour des applications d'aide auditive
US20070129785A1 (en) 2005-11-14 2007-06-07 Ev3, Inc. Stent and stent delivery system for ostial locations in a conduit
US20070250158A1 (en) 2006-04-25 2007-10-25 Medtronic Vascular, Inc. Laminated Implantable Medical Device Having a Metallic Coating
US20080241570A1 (en) 2007-03-26 2008-10-02 Howmedica Osteonics Corp. Method for fabricating a medical component from a material having a high carbide phase and such medical component

Also Published As

Publication number Publication date
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