EP2408404A2 - Moyen auxiliaire pour le revêtement inférieur de plaques magnétiques - Google Patents

Moyen auxiliaire pour le revêtement inférieur de plaques magnétiques

Info

Publication number
EP2408404A2
EP2408404A2 EP10719527A EP10719527A EP2408404A2 EP 2408404 A2 EP2408404 A2 EP 2408404A2 EP 10719527 A EP10719527 A EP 10719527A EP 10719527 A EP10719527 A EP 10719527A EP 2408404 A2 EP2408404 A2 EP 2408404A2
Authority
EP
European Patent Office
Prior art keywords
head
relining
aid
magnetic disks
protection
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Withdrawn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
EP10719527A
Other languages
German (de)
English (en)
Inventor
Ralf Siegert
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.)
Sophono Inc
Original Assignee
Sophono Inc
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
Priority claimed from DE200920003509 external-priority patent/DE202009003509U1/de
Priority claimed from DE200920005475 external-priority patent/DE202009005475U1/de
Application filed by Sophono Inc filed Critical Sophono Inc
Publication of EP2408404A2 publication Critical patent/EP2408404A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • 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; ELECTRIC HEARING AIDS; 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

  • magnets For fixation of head-worn aids such as partially implantable hearing aid components or epitheses, the implantation of magnets has been proven. These are preferably used for various reasons as interconnected double magnets.
  • the complementary external components i. In particular, the electronic components, the microphone, the vibrator and the battery of the hearing aid are fastened with counter magnets. These are typically embedded in plastic called the base plate.
  • the implanted and external magnets attract each other and thereby fix the external support member, but also result in a compressive loading of the soft tissue lying between the magnets, i. especially the skin, the subcutaneous fatty tissue and partly the musculature.
  • the retention force should be as high as possible, on the other hand, the stress on the skin must not lead to circulatory problems or pressure points. Since the forces acting selectively on the soft tissue are inversely proportional to the area on which the total magnetic force acts, an optimal and individual adaptation of the shape of the base plate to the skin surface is required. This is not only about the geometric adaptation of the base plate to the surface shape of the skin in the area of the implanted magnets, but also about the consideration of their elasticity distribution. This is important because the implanted magnets have a different surface shape than the base plate and thus the resulting pressure distribution does not correspond to the skin surface.
  • the base plate is individually padded. Similar to a dental direct relining procedure, an autopolymerizate in a viscous state is applied to the base plate and placed on the skin of the skull in the region of the implanted magnet during its processing width. The magnetic field adjusts the plate and pulls it on the skin so that the still viscous plastic is pushed away according to the resulting individual force distribution. After curing, the relined base plate is removed, the supernatants are milled off and the support surface moderately reworked.
  • a thin plate of a ferromagnetic material (1) is placed on the skin (2) above the implant consisting of two interconnected magnets (double magnet) (3) and fixed by its magnetic forces.
  • the shape of this plate (1) corresponds approximately to the shape of the implant (3).
  • the metal plate (1) slightly overlaps the size of the implant (3) and is bevelled at the edge. Thereby can circumscribed strains on the skin are avoided and the attractions are distributed more evenly.
  • This foil-covered metal ring (7) is pressed over the magnetically fixed plate on the implant (1) and then the o.g. Relining performed. After curing of the plastic (5), the relined base plate (4) is removed, the plastic supernatants are milled off and their support surface is moderately reworked and slightly smoothed without changing their individually adapted form.
  • the base plate is somewhat hollow in the areas of highest compressive forces, so that the force is distributed more evenly over the entire surface of the base plate, thus reducing the risk of circumscribed microcirculation disturbances and pressure points.
  • Their shape should usually - as suggested above - be congruent to the shape of the implanted double magnet, but can be individualized in individual cases.
  • metal plates of different size and thickness as well as beveled plates are available whose thicknesses are different at both ends.
  • the thickness and shape of the metal plate determines the depth of cavitation and thus the amount of pressure displacement on the areas under the base plate (4) located adjacent to the implant. For example, if the plate thickness is 1 mm, the soft tissues next to the implant are pressed in 1 mm before the plate rests everywhere. If the plate thickness is 2 mm, the soft parts outside the implant are additionally pressed in by 2 mm.
  • the choice of plate thickness and thus the cavitation depends on the individual anatomical situation after implantation. It is dependent on the height of the implant over the bone, which in turn depends on the thickness of the bone available, the bone shape, the implant geometry and the implantation technique, as well as the thickness and elasticity of the skin above and next to the implant certainly.
  • the aid shown in Figure 2 is proposed. It is a strip-shaped, solid plate (9) with a recess (9a) which is slightly larger than the implanted magnet. There are several versions of these measuring strips with different depths of the recesses (9a) are available. They are held over the implanted magnets and lightly pressed into the skin adjacent to the implants (2a) until a fade appears indicative of the restriction of microcirculation. At this pressure, the depression in the plate (9a) should just touch the skin over the magnet (2b).
  • a plate (9) with a smaller depression (9a) is selected; on the other hand, if it presses the skin (2b) until it fades, it is replaced by a plate (9) with a larger depression (9a).
  • the thickness of the metal plate ((1) in Figure 1) is selected according to the depth of the recess ((9a) in Figure 2).
  • the overall force with which the magnetic disk and attached tooling depends on both the strength and geometry of the implanted and external magnets in the base plate, as well as their spacing.
  • the pressure forces can be roughly selected.
  • Distance changes can be made by the o.g. Relief can be precisely adjusted and thus allow a fine adjustment of the pressure forces and their distribution.
  • To clinically measure total force there are various relatively small and handy force-displacement gauges available, including: register the maximum deduction and thus the pressure force. They offer considerably more measuring possibilities than the mere determination of the pull-off force and are thus often too time-consuming and cost-intensive for the routine control of a corresponding relining. Therefore, the following simple aid for the orienting determination of the peel force is presented, an example of which is shown in FIG.
  • a small hook or eye is fixed, for example by means of a thread.
  • the simple pull-off force gauge with a hook (10) mounted on the hook.
  • a band (1 1) On the hook is a band (1 1), at the other end a small magnet (12) is attached.
  • a second magnet (13) of approximately the same size is applied to the first magnet; both are so poled that they get dressed.
  • a band (1 1) At the second magnet is also a band (1 1), at the second end of which a loop or a ring (14) is located.
  • This has a diameter such that it can be comfortably held by a forefinger.
  • the force with which the two magnets attract depends on their type, size and geometry. They are chosen so that they correspond to certain defined withdrawal forces. For the exact adjustment of the pressure force of the base plate are several of these simple Abziehskraftmessvorraumen with different magnet strengths available.
  • one of them can also be replaced by a ferromagnetic plate (12).
  • the force is then built up exclusively by the second magnet (13).
  • the defined withdrawal forces are varied and determined.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Neurosurgery (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Magnetic Treatment Devices (AREA)
  • Prostheses (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

Le moyen auxiliaire sert au revêtement inférieur de plaques magnétiques portées sur la tête et est adapté sous la forme d'une mince plaque en matériau ferromagnétique aux aimants implantés.
EP10719527A 2009-03-15 2010-03-15 Moyen auxiliaire pour le revêtement inférieur de plaques magnétiques Withdrawn EP2408404A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200920003509 DE202009003509U1 (de) 2009-03-15 2009-03-15 Hilfsmittel zur Unterfütterung von Magnetplatten
DE200920005475 DE202009005475U1 (de) 2009-04-15 2009-04-15 Einfache Hilfsmittel zur Unterfütterung von Magnetplatten
PCT/DE2010/000281 WO2010105601A2 (fr) 2009-03-15 2010-03-15 Moyen auxiliaire pour le revêtement inférieur de plaques magnétiques

Publications (1)

Publication Number Publication Date
EP2408404A2 true EP2408404A2 (fr) 2012-01-25

Family

ID=42288656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10719527A Withdrawn EP2408404A2 (fr) 2009-03-15 2010-03-15 Moyen auxiliaire pour le revêtement inférieur de plaques magnétiques

Country Status (4)

Country Link
US (1) US20120080039A1 (fr)
EP (1) EP2408404A2 (fr)
DE (1) DE112010001095A5 (fr)
WO (1) WO2010105601A2 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD689615S1 (en) 2011-11-17 2013-09-10 Sophono, Inc. Magnetic attachment mechanism for bone conduction hearing device
US9031274B2 (en) 2012-09-06 2015-05-12 Sophono, Inc. Adhesive bone conduction hearing device
US9179228B2 (en) 2011-12-09 2015-11-03 Sophono, Inc. Systems devices, components and methods for providing acoustic isolation between microphones and transducers in bone conduction magnetic hearing aids
US9258656B2 (en) 2011-12-09 2016-02-09 Sophono, Inc. Sound acquisition and analysis systems, devices and components for magnetic hearing aids
US9736601B2 (en) 2012-07-16 2017-08-15 Sophono, Inc. Adjustable magnetic systems, devices, components and methods for bone conduction hearing aids
US9210521B2 (en) 2012-07-16 2015-12-08 Sophono, Inc. Abutment attachment systems, mechanisms, devices, components and methods for bone conduction hearing aids
US9526810B2 (en) 2011-12-09 2016-12-27 Sophono, Inc. Systems, devices, components and methods for improved acoustic coupling between a bone conduction hearing device and a patient's head or skull
US9022917B2 (en) * 2012-07-16 2015-05-05 Sophono, Inc. Magnetic spacer systems, devices, components and methods for bone conduction hearing aids
USD682430S1 (en) 2012-04-06 2013-05-14 Sophono, Inc. Magnetic attachment mechanism for bone conduction hearing device
US11095994B2 (en) 2013-02-15 2021-08-17 Cochlear Limited Conformable pad bone conduction device
US9516434B2 (en) 2013-05-09 2016-12-06 Cochlear Limited Medical device coupling arrangement
DK3149967T3 (da) 2014-05-27 2020-11-30 Sophono Inc Systemer, enheder, komponenter og metoder til at reducere tilbagekobling mellem mikrofoner og transducere i benledende magnetiske høreapparater
US9800982B2 (en) 2014-06-18 2017-10-24 Cochlear Limited Electromagnetic transducer with expanded magnetic flux functionality
US20150382114A1 (en) 2014-06-25 2015-12-31 Marcus ANDERSSON System for adjusting magnetic retention force in auditory prostheses
US10091594B2 (en) 2014-07-29 2018-10-02 Cochlear Limited Bone conduction magnetic retention system
US10130807B2 (en) 2015-06-12 2018-11-20 Cochlear Limited Magnet management MRI compatibility
US20160381473A1 (en) 2015-06-26 2016-12-29 Johan Gustafsson Magnetic retention device
CN107810645B (zh) 2015-06-26 2022-11-01 科利耳有限公司 磁保持装置
US10917730B2 (en) 2015-09-14 2021-02-09 Cochlear Limited Retention magnet system for medical device
US9967685B2 (en) 2015-12-16 2018-05-08 Cochlear Limited Bone conduction skin interface
US11595768B2 (en) 2016-12-02 2023-02-28 Cochlear Limited Retention force increasing components
EP3404933A1 (fr) 2017-05-15 2018-11-21 Oticon Medical A/S Prothèse auditive destinée à être placée dans l'oreille d'un utilisateur
US12420101B2 (en) 2019-09-27 2025-09-23 Cochlear Limited Multipole magnet for medical implant system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736747A (en) * 1986-04-11 1988-04-12 Minnesota Mining And Manufacturing Company Adjustable magnetic supercutaneous device and transcutaneous coupling apparatus
US5161972A (en) * 1989-09-04 1992-11-10 Nippon Mining Co., Ltd. Method and magnetic device for fixing a denture
US5741336A (en) * 1996-08-27 1998-04-21 Fraser; William A. Magnetically secured hairpieces
US6074420A (en) * 1999-01-08 2000-06-13 Board Of Trustees Of The University Of Arkansas Flexible exint retention fixation for external breast prosthesis
AU2003278052A1 (en) * 2002-10-15 2004-05-04 Ludwig Arwed Implant for implanting under the scalp for the magnetic fixing of a prosthesis
CN104885481B (zh) * 2012-07-09 2018-05-29 Med-El电气医疗器械有限公司 电磁骨骼传导听力设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010105601A2 *

Also Published As

Publication number Publication date
US20120080039A1 (en) 2012-04-05
WO2010105601A3 (fr) 2010-11-25
WO2010105601A2 (fr) 2010-09-23
DE112010001095A5 (de) 2012-10-31

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