EP3863302A1 - Schale für ein im-ohr-hörgerät und verfahren zur herstellung davon - Google Patents

Schale für ein im-ohr-hörgerät und verfahren zur herstellung davon Download PDF

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Publication number
EP3863302A1
EP3863302A1 EP20155330.2A EP20155330A EP3863302A1 EP 3863302 A1 EP3863302 A1 EP 3863302A1 EP 20155330 A EP20155330 A EP 20155330A EP 3863302 A1 EP3863302 A1 EP 3863302A1
Authority
EP
European Patent Office
Prior art keywords
shell
magnetisable particles
hearing device
particles
portions
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP20155330.2A
Other languages
English (en)
French (fr)
Inventor
Michael Takacs
Jonathan Sander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sonova Holding AG
Original Assignee
Sonova 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 Sonova AG filed Critical Sonova AG
Priority to EP20155330.2A priority Critical patent/EP3863302A1/de
Publication of EP3863302A1 publication Critical patent/EP3863302A1/de
Withdrawn legal-status Critical Current

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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
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H04R25/658—Manufacture of housing parts

Definitions

  • the invention relates to a shell for an In-The-Ear hearing device and to a method of producing a shell for an In-The-Ear hearing device.
  • Shells for custom hearing aids and sound delivery systems produced in a 3D printing process using polymers (acrylate) are known in the art.
  • Polymeric hearing aid shells are generally produced by means of stereolithography (SLA) and in particular Digital Light Processing (DLP).
  • SLA stereolithography
  • DLP Digital Light Processing
  • Acrylates are typically limited to strength below 100 MPa. Minimum wall thicknesses of 0.5 mm or more are desired.
  • EP 3 425 927 A1 discloses a method for producing a housing part of a hearing device.
  • the housing part serves to receive electronic components of the hearing device in a housing interior.
  • Fibers are used to build up a fiber skeleton for a wall of the housing part at least partially surrounding the housing interior.
  • a mechanical property of the wall is varied in a predefined manner along a reference direction of the housing part by way of the fibers.
  • the fiber skeleton is then infiltrated, at least over part of its longitudinal extent, with a matrix material.
  • the object is achieved by a method of producing a shell for an In-The-Ear hearing device according to claim 1 and by a shell for an In-The-Ear hearing device according to claim 6.
  • the shell is printed from a polymer, e.g. acrylic, comprising magnetisable particles by a three-dimensional printing process, wherein the magnetisable particles are anisotropic objects comprising a longitudinal direction and are adapted to be aligned in the longitudinal direction, wherein one or more magnetic fields are applied during the printing process to control an alignment of the magnetisable particles within one or more portions of the shell to obtain a reinforcement of said portions in the shell, whereas other areas of the shell outside said portions may remain unreinforced.
  • printing refers to any method for producing a 3 dimensional object, i.e. also a moulding process.
  • the reinforced polymer according to the invention allows for electromagnetic transparency so that antennas can be incorporated within the shell and for optical transparency so that optical sensors can be incorporated within the shell. Moreover, local variations in strength of the shell may be achieved to allow for better wearing comfort. Due to thinner possible shells the devices are less visible and more discrete.
  • the reinforcement comprises an increase of the tensile strength in the longitudinal direction and/or an increase of the bending strength perpendicular to the longitudinal direction.
  • the magnetisable particles are magnetic or paramagnetic particles.
  • the particles may have lengths in a range from 1 ⁇ m to 100 ⁇ m.
  • the magnetisable particles comprise nanoparticles.
  • the magnetisable particles are fibers coated with nanoparticles or having nanoparticles embedded therein.
  • a shell for an In-The-Ear hearing device is produced by the above described method, the shell comprising a polymer material, in which magnetisable particles are aligned in one or more portions of the shell to provide a reinforcement of said portions of the shell.
  • the magnetisable particles are aligned within the polymer such that one or more areas of the shell are more flexible than the one or more reinforced portions.
  • the magnetisable particles are magnetic or paramagnetic particles.
  • the magnetisable particles are anisotropic objects.
  • the magnetisable particles are nanoparticles.
  • the portion is a rim, in which the magnetisable particles are aligned such that their longitudinal direction basically complies with a radial direction of the shell.
  • a sound delivery system for a hearing device is arranged within a shell as described above.
  • a hearing device comprises a sound delivery system as described above.
  • the shell is a part of the hearing device intended to be placed within an ear canal of a user in use and may typically be customised for a specific user.
  • Figure 1 is a schematic view of a shell 1 for a hearing device, in particular an In-The-Ear hearing device.
  • Figure 2 is a schematic view of a portion 3 of such a shell 1.
  • the shell 1 may be printed from a polymer (e.g. acrylic) comprising magnetisable particles 2 by a three dimensional printing process, wherein the magnetisable particles 2 are anisotropic objects comprising a longitudinal direction and are adapted to be aligned in the longitudinal direction thereof.
  • One or more magnetic fields in particular dynamic magnetic fields, may be applied during the printing process to control the alignment of the magnetisable particles 2 within one or more portions 3 of the shell 1 to obtain a reinforcement of said portions in the shell 1 whereas other areas 9 of the shell 1 outside said portions 3 may remain unreinforced.
  • the reinforced portions 3 may be those that are exposed to structural leverage when the shell is in place within an ear canal of a user.
  • Figure 2 shows particles 2.1, 2.2, 2.3, wherein particle 2.1 is aligned perpendicular to a direction of an external load L and does therefore not reinforce the portion 3 in the direction of the external load L.
  • Particle 2.2 is aligned in parallel with the direction of the external load L and therefore reinforces the portion 3 in the direction of the external load L.
  • Particle 2.3 is aligned at an angle to the direction of the external load L neither parallel nor perpendicular and therefore partially contributes to the reinforcement of the portion 3 in the direction of the external load L.
  • Figure 3 is a schematic view of an exemplary embodiment of an arrangement 4 for three dimensional printing of a shell 1.
  • the arrangement 4 comprises a build plate 5, a resin container 6 for holding the polymer comprising the magnetisable particles 2, a projector 7 with a digital micromirror device and one or more, preferably three, solenoids 8.1, 8.2, 8.3 configured to apply one or more magnetic fields to the magnetisable particles 2 during the three dimensional printing process.
  • the three dimensional printing process may be performed as described in Martin, et al. Nature Communications volume 6, Article number: 8641 (2015 ).
  • the process to align the magnetisable particles 2 in the polymer may be performed as described in Erb et al., https://science.sciencemag.org/content/335/6065/199, Science 335 (6065), 199-204. DOI: 10.1126/science.1210822 .
  • the process may cover
  • Figure 4 is a schematic view of an exemplary embodiment of a shell 1 having a portion 3, in particular a rim, with increased radial strength.
  • Figure 5 is a schematic detail view of the shell 1 showing that the portion 3, i.e. the rim, comprises magnetisable particles 2 aligned such that their longitudinal direction basically complies with a radial direction of the shell 1.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
EP20155330.2A 2020-02-04 2020-02-04 Schale für ein im-ohr-hörgerät und verfahren zur herstellung davon Withdrawn EP3863302A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20155330.2A EP3863302A1 (de) 2020-02-04 2020-02-04 Schale für ein im-ohr-hörgerät und verfahren zur herstellung davon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20155330.2A EP3863302A1 (de) 2020-02-04 2020-02-04 Schale für ein im-ohr-hörgerät und verfahren zur herstellung davon

Publications (1)

Publication Number Publication Date
EP3863302A1 true EP3863302A1 (de) 2021-08-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20155330.2A Withdrawn EP3863302A1 (de) 2020-02-04 2020-02-04 Schale für ein im-ohr-hörgerät und verfahren zur herstellung davon

Country Status (1)

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EP (1) EP3863302A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014209994A2 (en) * 2013-06-24 2014-12-31 President And Fellows Of Harvard College Printed three-dimensional (3d) functional part and method of making
WO2015188175A1 (en) * 2014-06-06 2015-12-10 Northeastern University Additive manufacturing of discontinuous fiber composites using magnetic fields
EP3425927A1 (de) 2017-07-07 2019-01-09 Sivantos Pte. Ltd. Verfahren zum herstellen eines gehäuseteils einer hörvorrichtung, gehäuseteil für eine hörvorrichtung und hörvorrichtung
WO2019089764A1 (en) * 2017-10-31 2019-05-09 Aeroprobe Corporation Solid-state additive manufacturing system and material compositions and structures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014209994A2 (en) * 2013-06-24 2014-12-31 President And Fellows Of Harvard College Printed three-dimensional (3d) functional part and method of making
WO2015188175A1 (en) * 2014-06-06 2015-12-10 Northeastern University Additive manufacturing of discontinuous fiber composites using magnetic fields
EP3425927A1 (de) 2017-07-07 2019-01-09 Sivantos Pte. Ltd. Verfahren zum herstellen eines gehäuseteils einer hörvorrichtung, gehäuseteil für eine hörvorrichtung und hörvorrichtung
WO2019089764A1 (en) * 2017-10-31 2019-05-09 Aeroprobe Corporation Solid-state additive manufacturing system and material compositions and structures

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ERB ET AL., SCIENCE, vol. 335, no. 6065, pages 199 - 204, Retrieved from the Internet <URL:https://science.sciencemag.org/content/335/6065/199>
JOSHUA J. MARTIN ET AL: "Designing bioinspired composite reinforcement architectures via 3D magnetic printing", NATURE COMMUNICATIONS, vol. 6, no. 1, 23 October 2015 (2015-10-23), XP055713503, DOI: 10.1038/ncomms9641 *
MARTIN ET AL., NATURE COMMUNICATIONS, vol. 6, 2015
R. M. ERB ET AL: "Composites Reinforced in Three Dimensions by Using Low Magnetic Fields", SCIENCE, vol. 335, no. 6065, 13 January 2012 (2012-01-13), pages 199 - 204, XP055193898, ISSN: 0036-8075, DOI: 10.1126/science.1210822 *

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