EP1432285B1 - Revêtement hydrophobe des composants individuels des prothèses auditives - Google Patents

Revêtement hydrophobe des composants individuels des prothèses auditives Download PDF

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Publication number
EP1432285B1
EP1432285B1 EP03029970.5A EP03029970A EP1432285B1 EP 1432285 B1 EP1432285 B1 EP 1432285B1 EP 03029970 A EP03029970 A EP 03029970A EP 1432285 B1 EP1432285 B1 EP 1432285B1
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EP
European Patent Office
Prior art keywords
hydrophobic coating
components
housing
housing wall
coating
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.)
Expired - Lifetime
Application number
EP03029970.5A
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German (de)
English (en)
Other versions
EP1432285A3 (fr
EP1432285A2 (fr
Inventor
Erdal Karamuk
Stefan Launer
Michael Mathey
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
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Filing date
Publication date
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Application filed by Sonova AG filed Critical Sonova AG
Priority to EP03029970.5A priority Critical patent/EP1432285B1/fr
Priority to DK03029970.5T priority patent/DK1432285T3/en
Priority to US10/749,291 priority patent/US7267847B2/en
Publication of EP1432285A2 publication Critical patent/EP1432285A2/fr
Priority to CN 200410098341 priority patent/CN1638531B/zh
Publication of EP1432285A3 publication Critical patent/EP1432285A3/fr
Application granted granted Critical
Publication of EP1432285B1 publication Critical patent/EP1432285B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • H04R25/602—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of batteries

Definitions

  • the present invention relates to a method for the liquid-tight sealing of micro-gaps, cracks and / or openings in housing walls, uses of the method, housings of electrical or electronic devices, having gaps, capillaries, scratches, openings and the like, which prevent the ingress of liquid be sealed, but not against gas permeability, and a battery compartment of a hearing aid.
  • a condenser microphone is described with a hydrophobic membrane to prevent sticking to the backplate and also various methods of achieving this hydrophobization.
  • the US 2002100605 describes a hydrophobic coating for housings of electrical equipment, in particular with regard to surge arresters. Again in other documents hydrophobic coatings of substrates such as plastics, wood, concrete, etc. are described in which, however, the above-mentioned problem is not an issue.
  • each hearing aid housing each having a housing part, which is provided with a hydrophobic coating in order to prevent the possible ingress of liquid through these housing parts.
  • this coating is such that a certain gas permeability is ensured.
  • Especially medical devices worn on the body such as pulse rate, invasive blood characteristic sensors, such as oximetry sensors, heart rate monitors, hearing aids and the like.
  • invasive blood characteristic sensors such as oximetry sensors, heart rate monitors, hearing aids and the like.
  • complex apparatus which consist of a variety of individual, mechanical and electronic components in different Process produced and then assembled. Because of the mechanical tolerances of the injection molded plastic parts, which in the Most cases are used for housing, battery cover, switches, and the like., Also arise in the assembled state of the devices always microscopic capillary gaps between the individual components.
  • FIG. 1a shows the contact angle of water on an untreated or uncoated surface 3, such as a polymer used for hearing aid components.
  • a polymer used for hearing aid components such as polyamide, ABS, etc ..
  • the contact angle is according to FIG. 1a well below 80 °.
  • the contact angle is now significantly increased, such as over 100 °, which corresponds approximately to the wettability of Teflon.
  • FIG. 2 is schematically shown in section a capillary 11, which may be formed for example in a hearing aid housing 7.
  • a capillary 11 which may be formed for example in a hearing aid housing 7.
  • FIGS. 1a and 1b A comparison with the two FIGS. 1a and 1b now clearly shows that a drop of water according to FIG. 1a can easily pass through the capillary 11, while the water droplet according to FIG. 1b remains on the surface of the housing wall by penetration by the capillary 11 is impossible.
  • no sealing means such as rubber seals and the like. Are arranged in the capillary 11, the gas permeability is still maintained.
  • FIG. 3 shows in section the area of a battery compartment of a conventional hearing aid, which is sealed against the ingress of liquid. That's it now important that all disposed in the battery compartment 19 housing parts are provided with a hydrophobic coating. These parts include the battery cover 13, the mentioned battery compartment 19, the housing 23 and the function switch 21.
  • the individual components are coated after their manufacture or delivery and before installation in a hearing aid.
  • a housing such as shown in FIG. 3 This means, for example, that it is cleaned after the injection molding and, if necessary, pretreated, in order subsequently to be hydrophobically coated by one of the methods described below.
  • FIG. 4 shows a further embodiment of a battery compartment of a hearing aid and again those housing parts or components are referred to, which are to be provided with a hydrophobic coating. These parts include, for example, a function or touch button 31, the battery cover 33 and a frame 35th
  • a liquid protection is provided by a targeted surface treatment of individual components of an electronic or electrical device, such as individual hearing aid components achieved.
  • an electronic or electrical device such as individual hearing aid components achieved.
  • the components are hydrophobized is of secondary importance for the invention, since a large number of such methods are known from the prior art. In the following, for example, only a few methods will be cited for the better understanding of the present invention.
  • sol-gel processes are known. These processes come from chemical nanotechnology.
  • the surface is coated with hydrophobic nanoparticles embedded in a polymer network.
  • These layers are composites (nanocomposites) with organic and inorganic components, which can be generated by sol-gel processes.
  • the layers are applied by simple dipping or spraying processes and then cured. In principle, these layers can be applied to all materials that tolerate the necessary temperatures for curing (sintering). For most materials that are used in hearing aids, a coating on sol-gel processes is possible.
  • the properties of the surface can be adjusted and hydrophobic or even antimicrobial effects can be achieved, such as in the WO03 / 094574 described.
  • Nanoparticles with hydrophobic and oleophobic properties and their applications have also been described in DE10051182A1 .
  • Further processes for the hydrophobic coating of polymer surfaces can be found in US 2002 / 0192385A1 or DE10106213A1 ,
  • the coating takes place via low-temperature plasma evaporation processes.
  • the surface is cleaned and activated (for example 02 plasma) and then coated.
  • a compact polymer layer made of a fluorine-containing polymer is applied to the component or a hydrophobic molecule is attached directly to the component plastic.
  • the advantages of the present invention are the following: Due to the hydrophobic coatings, for example in the area of a battery compartment, the susceptibility to corrosion in a micro-electronic device, such as For example, a medical device, such as in particular a hearing aid, be reduced by preventing the ingress of liquid or even excluded.
  • the application of the inventive method is possible on old, already introduced into the market products.
  • the improvement of the liquid resistance is possible without design changes.
  • a device can be retrofitted in the service with hydrophobized components.
  • Service intervals due to contamination or corrosion can be prolonged, i.
  • the device has a longer life.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Casings For Electric Apparatus (AREA)
  • Battery Mounting, Suspending (AREA)
  • Paints Or Removers (AREA)
  • Secondary Cells (AREA)

Claims (12)

  1. Procédé pour étanchéifier de façon étanche aux liquides des petites fissures, rainures et/ou capillaires dans des parois de boîtier résultant de l'assemblage d'au moins deux composants, caractérisé en ce que les différents composants sont munis au moins dans la zone des fissures, rainures et/ou capillaires d'un revêtement hydrophobe.
  2. Procédé selon la revendication 1, caractérisé en ce que l'ensemble des composants de la paroi de boîtier sont munis au moins dans la zone des fissures, rainures et/ou capillaires d'un revêtement hydrophobe.
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que la paroi de boîtier ou sa surface est recouverte dans la zone des fissures, rainures, capillaires ou ouvertures, de nanoparticules hydrophobes.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le revêtement hydrophobe est produit au moyen de nanoparticules hydrophobes par un processus dit sol-gel.
  5. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que le revêtement hydrophobe est effectué par revêtement de la paroi de boîtier avec des silanes hydratés ou des polycondensats contenant du fluor.
  6. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que le revêtement se fait au moyen d'un procédé de vapeur de plasma à basse température dans lequel, pendant l'application, une couche polymère compacte, de préférence issue d'un polymère contenant du fluor, est isolée sur la paroi de boîtier.
  7. Utilisation du procédé selon l'une des revendications 1 à 6 pour étanchéifier de façon étanche aux liquides les fissures, rainures ou ouvertures capillaires dans des parois de boîtier de petits appareils électriques ou électroniques, comme notamment des appareils miniatures dans le domaine médical, comme des appareils auditifs.
  8. Utilisation du procédé selon l'une des revendications 1 à 6 pour étanchéifier de façon étanche aux liquides un compartiment à pile dans un appareil auditif.
  9. Boîtier d'appareils électriques ou électroniques présentant des petites fissures, ouvertures capillaires ou rainures dans la paroi de boîtier, résultant de l'assemblage d'au moins deux composants, caractérisé en ce que les différents composants de la paroi de boîtier présentent au moins dans la zone des fissures, rainures ou capillaires, un revêtement hydrophobe.
  10. Boîtier selon la revendication 9, caractérisé en ce que le revêtement hydrophobe est réalisé de telle sorte que l'angle de contact minimum avec l'eau à température ambiante est d'au moins 100°.
  11. Boîtier selon l'une des revendications 9 ou 10, caractérisé en ce que le revêtement hydrophobe présente une épaisseur de couche ≤ 5 micromètres.
  12. Compartiment à pile d'un appareil auditif, caractérisé en ce que l'ensemble des composants ou pièces sont muni(e)s, dans la zone de la paroi de boîtier de l'appareil auditif ou dans la zone du compartiment à pile, d'un revêtement hydrophobe.
EP03029970.5A 2003-12-30 2003-12-30 Revêtement hydrophobe des composants individuels des prothèses auditives Expired - Lifetime EP1432285B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP03029970.5A EP1432285B1 (fr) 2003-12-30 2003-12-30 Revêtement hydrophobe des composants individuels des prothèses auditives
DK03029970.5T DK1432285T3 (en) 2003-12-30 2003-12-30 Hydrophobic coating of the individual components of the hearing instrument
US10/749,291 US7267847B2 (en) 2003-12-30 2003-12-30 Hydrophobic coating of individual components of hearing aid devices
CN 200410098341 CN1638531B (zh) 2003-12-30 2004-12-03 助听装置个别部件的憎水涂层

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03029970.5A EP1432285B1 (fr) 2003-12-30 2003-12-30 Revêtement hydrophobe des composants individuels des prothèses auditives
US10/749,291 US7267847B2 (en) 2003-12-30 2003-12-30 Hydrophobic coating of individual components of hearing aid devices

Publications (3)

Publication Number Publication Date
EP1432285A2 EP1432285A2 (fr) 2004-06-23
EP1432285A3 EP1432285A3 (fr) 2004-12-22
EP1432285B1 true EP1432285B1 (fr) 2016-06-08

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EP03029970.5A Expired - Lifetime EP1432285B1 (fr) 2003-12-30 2003-12-30 Revêtement hydrophobe des composants individuels des prothèses auditives

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US (1) US7267847B2 (fr)
EP (1) EP1432285B1 (fr)

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US8846161B2 (en) * 2006-10-03 2014-09-30 Brigham Young University Hydrophobic coating and method
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DE102007010602A1 (de) * 2007-03-05 2008-09-11 Siemens Audiologische Technik Gmbh Spannungsquelle mit einem beschichteten Gehäuse
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Publication number Publication date
EP1432285A3 (fr) 2004-12-22
US7267847B2 (en) 2007-09-11
EP1432285A2 (fr) 2004-06-23
US20050141738A1 (en) 2005-06-30

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