EP1463375A2 - Otoplastic - Google Patents

Abstract

The device has at least one acoustic/electrical converter and/or at least one electric/acoustic converter, each with an input and output. The input or output is connected to a coupling opening at the external surface of the hearing aid shell via an acoustic conductor bounded by the material of the hearing aid shell to form a channel.

Description

The present invention relates to an earmold with at least one acoustic / electrical converter and / or at least one electrical / acoustic transducer, each with an acoustic input or output, the input or output with a coupling opening on the outer surface the earmold shell via an acoustic conductor connected is.

In earmolds of the type mentioned, in particular at Hearing aids, whether these are in-the-ear or are these external ear hearing aids, are usually the acoustic inputs too acoustic / electrical input transducers, microphones and / or the acoustic outputs of electrical / acoustic output transducers, loudspeakers, via acoustic conductor components, e.g. in the form of tubes, with coupling openings on the outer surface of the Otoplastikschale connected, provided these inputs or outputs not directly in the surface area of the mentioned Shell are arranged. This procedure is under various aspects disadvantageous.

The geometric arrangement and orientation of the Coupling opening on the outer surface of the earmold to input transducers is primarily given by desired acoustic reception characteristic. So can through the distance and the location of such coupling openings, concerning the earmold, a hearing aid, the acoustic Receiving characteristic to be determined. Also the location a coupling opening on the output side of a Output transducer is e.g. by the relative position of Otoplasty in the ear canal and eardrum given.

In the case of an outer ear hearing aid, from the outer surface the otoplastic, for example, another tubular, acoustic conductor in the ear canal leads, the mentioned coupling opening should be arranged that the mentioned additional acoustic conductor optimally the Pinna can be guided along in the auditory canal. Is the position of this coupling opening by parameters of Given the type mentioned, then must in the earmold and according to the available Design space one or more transducers integrated and with the mentioned acoustic conductors with the Coupling openings are connected. Considering, in such active earmoulds as mentioned Hearing aids, the space for recording transducer and further functional groups of the electronics including battery is extremely small, it can be seen that often a lot of trouble, if desired location of the Coupling openings, the transducers and acoustic conductors in to integrate the earmould so that the space and The acoustic conditions optimally taken into account becomes.

It is an object of the present invention to overcome these disadvantages to fix and to propose an earmold of the kind named, where high flexibility exists, the intended converter constructively position in the earmould largely independent of the location of the Coupling openings, without therefore much consideration on the space stress through to be provided, separate would take acoustic connections. It should be the Possibility opened, the mentioned converter flexible to install it where, from the aspect of compactest possible Construction is the optimal place, regardless of the location of the Coupling openings on the outer surface of the earmold and without the acoustic to be provided Connecting lines or to be provided for this purpose To assign building volume with crucial importance. This is achieved by the aforementioned earmold, that the acoustic conductor as a channel through the material of Otoplastikschale is bounded.

In other words, the mentioned acoustic conductor molded integrally into the earmold or its shell. There anyway on the earmold a shell is provided with a given wall thickness, will be provided for the acoustic conductor towards the coupling orifices, only negligible construction volume claimed in the earmold and the conductor guide can be essentially of any to any position. If necessary, you can also several acoustic conductors or channels at least sections are signal-wise led in parallel. So For example, at an area of the earmold in which the space for a channel of desired cross-sectional area is not available by two or more signal-parallel channels smaller Cross-sectional areas are passed or bypassed: The the first-mentioned channel branches, the branch channels unite at the end of a given Stretch section again.

In a preferred embodiment, the mentioned at least one channel varying along its length Cross-sectional areas and / or varying cross-sectional shapes on, in sections, what the acoustic Transmission behavior is optimized. Along the Channels become more acoustic in this way Impedances created which provide an optimal acoustic Allow adjustment.

In a further embodiment, the Impedance matching by at least one matching stub be realized, which opens into the channel. To be at the according to the invention otoplastik longer distances between the mentioned converter and the coupling opening to bridge, it is proposed that at least one channel at least along a substantial section of his Length substantially parallel to the earmold outer surface respectively.

Although the inventive earmold quite as The headphone section can be designed, this is suitable proposed procedure especially for hearing aids.

If the hearing device is designed as an in-ear hearing aid, then it is further suggested that the channel is part of a Ventilation system for the eardrum is. this will in particular by the above-described possibilities of Impedance adjustment possible.

Fig. 1

ein vereinfachtes Schema einer nach dem bevorzugten Verfahren arbeitenden Fertigungsanlage für die Optimierung industrieller Fertigung von Otoplastiken;

Fig. 2

in einer Darstellung analog zu derjenigen von Fig. 1, eine weitere Anlagenkonzeption;

Fig. 3

in Darstellung analog zu denjenigen der Figuren 1 und 2, eine noch weitere Anlagenkonzeption;

Fig. 4

schematisch ein Im-Ohr-Hörgerät mit auf bekannte Art und Weise aufgesetzter Cerumen-Schutzkappe;

Fig. 5

in Darstellung analog zu Fig. 4, ein mit Cerumen-Schutzkappe integral gefertigtes Im-Ohr-Hörgerät;

Fig. 6

ein Im-Ohr-Hörgerät mit einer auf bekannte Art und Weise eingearbeiteten Belüftungsnut;

Fig. 7(a) bis (f)

perspektivisch dargestellte Ausschnitte von Otoplastik-Schalenoberflächen mit neuartigen Belüftungsnuten;

Fig. 8

anhand eines schematischen Ausschnittes einer Otoplastik-Oberfläche, eine Belüftungsnut mit entlang ihrer Längsausdehnung variierendem Querschnitt bzw. variierender Querschnittsform;

Fig. 9

schematisch eine Im-Ohr-Otoplastik mit verlängerter Belüftungsnut;

Fig. 10

in Darstellung analog zu Fig. 9, eine Im-Ohr-Otoplastik mit mehreren Belüftungsnuten;

Fig. 11 (a) bis (e)

Ausschnitte von Otoplastikschalen mit eingearbeiteten Belüftungskanälen verschiedener Querschnittsformen und Dimensionen;

Fig. 12

in einer Darstellung analog zu derjenigen von Fig. 8, ein Belüftungskanal in einer Otoplastikschale mit entlang seiner Längsausdehnung variierender Querschnittsform bzw. variierender Querschnittsfläche;

Fig. 13

in Analogie zur Darstellung von Fig. 9, schematisch eine Im-Ohr-Otoplastik mit eingearbeitetem, verlängerten Belüftungskanal;

Fig. 14

in Darstellung analog zu Fig. 10, eine Im-Ohr-Otoplastik erfindungsgemäss mit mehreren Belüftungskanälen;

Fig. 15

schematisch eine Länggsschnittdarstellung einer Im-Ohr-Otoplastik mit gerippter Innenfläche;

Fig. 16

einen Ausschnitt der Otoplastik gemäss Fig. 15 im Querschnitt, wobei die Rippen unterschiedliche Querschnittsflächen aufweisen;

Fig. 17

perspektivisch den Ausschnitt einer Otoplastikschale mit Innenrippung nach Fig. 15 oder 16, wobei die Rippen entlang ihrer Längsausdehnung unterschiedliche Querschnittsformen und Dimensionen aufweisen;

Fig. 18

in Darstellung analog zu Fig. 15, eine Im-Ohr-Otoplastik mit Aussenrippung;

Fig. 19

schematisch einen Ausschnitt aus einer gemäss Fig. 18 gerippten Otoplastikschale mit Rippen unterschiedlicher Querschnittsflächen;

Fig. 20

schematisch einen Querschnitt durch eine Otoplastik mit Aussenrippung, ggf. Innenrippung, und mindestens teilweise Füllmaterial-gefülltem Innenraum;

Fig. 21

schematisch einen Längsschnitt-Ausschnitt einer Otoplastikschale mit biege- und stauchflexibler Partie;

Fig. 22

schematisch im Längsschnitt, eine Im-Ohr-Otoplastik mit Aufnahmeraum für ein Elektronikmodul;

Fig. 23

die Otoplastik nach Fig. 22 bei ihrem Aufstülpen über ein Elektronikmodul;

Fig. 24

perspektivisch und schematisch, eine Im-Ohr-Otoplastik, wie insbesondere ein Im-Ohr-Hörgerät, mit zweiteiliger, separierbarer und assemblierbarer Otoplastikschale;

Fig. 25

ausschnittsweise und schematisch, die erfindungsgemässe Integration von akustischen Leitern und Anpassgliedern zu einem akustisch/elektrischen oder elektrisch/akustischen Wandler, in einer Otoplastik;

Fig. 26

in Darstellung analog zu derjenigen von Fig. 25, die erfindungsgemässe Anordnung zweier oder mehrerer akustischer Leiter in der Schale einer Otoplastikschale, und

Fig. 27

anhand eines vereinfachten Signalfluss/Funktionsblockdiagrammes, ein neuartiges Vorgehen bzw. eine neuartige Anordnung zu dessen Ausführung, bei dem bzw. der die Dynamik des Applikationsbereiches einer Otoplastik für deren Formgebung berücksichtigt wird.

The invention will be explained by way of example with reference to figures. These show:

Fig. 1

a simplified diagram of a working according to the preferred method manufacturing plant for the optimization of industrial production of earmolds;

Fig. 2

in a representation analogous to that of Figure 1, a further plant design.

Fig. 3

in representation analogous to those of Figures 1 and 2, a still further plant design;

Fig. 4

schematically an in-ear hearing aid with attached in a known manner cerumen protective cap;

Fig. 5

in a representation analogous to FIG. 4, an in-ear hearing aid integrally manufactured with a cerumen protective cap;

Fig. 6

an in-ear hearing aid with a ventilation groove incorporated in a known manner;

FIGS. 7 (a) to (f)

perspective cutouts of earmold shell surfaces with novel ventilation grooves;

Fig. 8

Based on a schematic section of an earmold surface, a ventilation groove with along its longitudinal extent varying cross-section or varying cross-sectional shape;

Fig. 9

schematically an in-ear earmold with extended ventilation groove;

Fig. 10

in illustration analogous to Figure 9, an in-ear earmold with several ventilation grooves.

Fig. 11 (a) to (e)

Cutouts of earmold shells with incorporated ventilation channels of various cross-sectional shapes and dimensions;

Fig. 12

in a representation analogous to that of FIG. 8, a ventilation channel in an otoplastic shell with a varying cross-sectional shape or varying cross-sectional area along its longitudinal extent;

Fig. 13

in analogy to the illustration of Figure 9, schematically an in-ear earmold with incorporated, extended ventilation duct.

Fig. 14

in an illustration analogous to FIG. 10, an in-ear earmold according to the invention with a plurality of ventilation channels;

Fig. 15

schematically a Länggsschnittdarstellung an in-ear earmold with ribbed inner surface;

Fig. 16

a section of the earmold according to FIG. 15 in cross section, wherein the ribs have different cross-sectional areas;

Fig. 17

in perspective, the detail of an ear mold shell with inner ribbing according to FIG. 15 or 16, wherein the ribs along their longitudinal extent have different cross-sectional shapes and dimensions;

Fig. 18

in representation analogous to FIG. 15, an in-ear otoplastic with external ribbing;

Fig. 19

schematically a section of a ribbed in accordance with Figure 18 Otoplastikschale with ribs of different cross-sectional areas.

Fig. 20

schematically a cross section through an ear mold with external ribbing, possibly inner ribbing, and at least partially filling material-filled interior;

Fig. 21

schematically a longitudinal section of a cutout Otoplastikschale with flexible and stauchflexibler game;

Fig. 22

schematically in longitudinal section, an in-ear earmold with receiving space for an electronic module;

Fig. 23

the earmold of Figure 22 in its slipping over an electronic module.

Fig. 24

perspective and schematic, an in-ear earmold, in particular an in-ear hearing aid, with two-piece, separable and assemblable Otoplastikschale;

Fig. 25

detail and schematic, the inventive integration of acoustic conductors and matching elements to an acoustic / electrical or electrical / acoustic transducer in an earmold;

Fig. 26

in a representation analogous to that of FIG. 25, the arrangement according to the invention of two or more acoustic conductors in the shell of an earmold shell, and FIG

Fig. 27

based on a simplified signal flow / function block diagram, a novel procedure or a novel arrangement for its execution, in which or the dynamics of the application area of an ear mold is taken into account for their shaping.

The ones described after the manufacturing process Embodiments of earmolds are preferably all made with this described manufacturing process.

definition

We understand an earmold to mean a device that immediately outside the pinna and / or at the Pinna and / or in the auditory canal is applied. To include external ear hearing aids, in-the-ear hearing aids, headphones, Noise protection and water protection inserts etc.

1. Manufacturing process

• http://ltk.hut.fi/∼koukka/RP/rptree.html   (1)
  oder auf
• Wohlers Report 2000, Rapid Prototyping & Tooling State of the industry   (2)

The production method, which is preferably used to manufacture the otoplastics described in detail below, is based on digitizing the shape of an individual application area for an intended otoplastic in three dimensions, then creating the otoplastic or its shell by an additive construction method. Additive construction methods are also known by the term "rapid prototyping". With regard to such additive processes already used in rapid prototyping, reference is made, for example, to:

• http://ltk.hut.fi/~koukka/RP/rptree.html (1)
  or on
• Wohlers Report 2000, Rapid Prototyping & Tooling State of the Industry (2)

• Lasersintern: Auf einem Pulverbett wird, beispielsweise mittels eines Rollers, Heissschmelzpulver in einer dünnen Schicht aufgetragen. Mittels eines Laserstrahls wird die Pulverschicht verfestigt, wobei der Laserstrahl u.a. entsprechend einer Schnittschicht der Otoplastik bzw. Otoplastikschale mittels der 3D-Forminformation des individuellen Applikationsbereiches angesteuert wird. Es entsteht in dem im übrigen losen Pulver eine verfestigte Schnittschicht der Otoplastik bzw. deren Schale. Diese wird aus der Pulververlegeebene abgesenkt und darüber eine neue Pulverschicht aufgebracht, diese wiederum einer Schnittschicht entsprechend laserverfestigt, etc.
• Laser- bzw. Stereolithographie: Eine erste Schnittschicht bzw. einer Otoplastik bzw. einer Otoplastikschale wird mittels UV-Laser an der Oberfläche flüssigen Fotopolymers verfestigt. Die verfestigte Schicht wird abgesenkt und wird wieder von Flüssigpolymer bedeckt. Mittels des erwähnten UV-Lasers wird, auf der bereits verfestigten Schicht, die zweite Schnittschicht der Otoplastik bzw. deren Schale verfestigt. Wiederum erfolgt die Laserpositionssteuerung u.a. mittels der 3D-Daten bzw. Information des individuellen, vorgängig erfassten Applikationsbereiches..
• Thermojetverfahren: Die Konturbildung entsprechend einer Schnittschicht der Otoplastik bzw. der Otoplastikschale wird ähnlich wie bei einem Tintenstrahldrucker durch Flüssigauftrag u.a. gemäss der digitalisierten 3D-Forminformation, insbesondere auch des individuellen Applikationsbereiches.vorgenommen. Danach wird die abgelegte Schnitt-"Zeichnung" verfestigt. Wiederum wird gemäss dem Prinzip der additiven Aufbauverfahren Schicht um Schicht zum Aufbau der Otoplastik bzw. deren Schale abgelegt.

From the group of these additive methods known today for rapid prototyping, laser sintering, laser or stereolithography or the thermojet method are particularly well suited to construct earmolds or their shells, and in particular the special embodiments described below. Therefore, only briefly summarizing specifications of these preferred additive construction methods:

• Laser sintering : On a powder bed, for example by means of a roller, hotmelt powder is applied in a thin layer. By means of a laser beam, the powder layer is solidified, wherein the laser beam is driven, inter alia, corresponding to a sectional layer of the earmold or earmold shell by means of the 3D shape information of the individual application area. It arises in the otherwise loose powder a solidified layer of the otoplastic or its shell. This is lowered from the powder laying plane and applied to it a new powder layer, this in turn laser-solidified according to a cut layer, etc.
• Laser or Stereolithography: A first cut layer or an earmold or a Otoplastikschale is solidified by means of UV laser on the surface of liquid photopolymer. The solidified layer is lowered and again covered by liquid polymer. By means of the mentioned UV laser, the second cut layer of the otoplastic or its shell is solidified on the already solidified layer. Again, the laser position control takes place, inter alia, by means of the 3D data or information of the individual, previously recorded application area.
• Thermojet method : The contouring according to a sectional layer of the earmold or the Otoplastikschale is similar to an inkjet printer by liquid application, inter alia, according to the digitized 3D shape information, especially the individual Anwendungsungsbereiches.bestgenommen. Then the filed cut "drawing" is solidified. Again, according to the principle of the additive build-up process, layer by layer is laid down to build up the otoplastic or its shell.

• http://www.padtinc.com/srv_rpm_sls.html   (3)
• "Selective Laser Sintering (SLS) of Ceramics", Muskesh Agarwala et al., presented at the Solid Freeform Fabrication Symposium, Austin, TX, August 1999,   (4)
• http://www.caip.rutgers.edu/RP_Library/process.html   (5)
• http://www.biba.uni-bremen.de/groups/rp/lom.html bzw.
• http://www.biba.uni-bremen.de/groups/rp/rp_intro.html.   (6)
• Donald Klosterman et al., "Direct Fabrication of Polymer Composite Structures with Curved LOM", Solid Freeform Fabrication Symposium, University of Texas at Austin, August 1999,   (7)
• http://lff.me.utexas.edu/sls.html   (8)
• http://www.padtinc.com/srv_rpm_sla.html   (9)
• http://www.cs.hut.fi/~ado/rp/rp.html   (10)

Reference may be made to the following further publications with regard to additive synthesis processes and the above-mentioned preferred ones:

• http://www.padtinc.com/srv_rpm_sls.html (3)
• "Selective Laser Sintering (SLS) of Ceramics", Muskesh Agarwala et al., Presented at the Solid Freeform Fabrication Symposium, Austin, TX, August 1999, (4)
• http://www.caip.rutgers.edu/RP_Library/process.html (5)
• http://www.biba.uni-bremen.de/groups/rp/lom.html
• http://www.biba.uni-bremen.de/groups/rp/rp_intro.html. (6)
• Donald Klosterman et al., "Direct Fabrication of Polymer Composite Structures with Curved LOM", Solid Freeform Fabrication Symposium, University of Texas at Austin, August 1999, (7)
• http://lff.me.utexas.edu/sls.html (8)
• http://www.padtinc.com/srv_rpm_sla.html (9)
• http://www.cs.hut.fi/~ado/rp/rp.html (10)

Basically, therefore, in additive construction process each a thin layer of material on a surface filed, like laser sintering or the Stereolithography still over the whole area, be it like that Thermojet process already in the contour of a cut the earmold under construction or its shell. Then the desired cut shape is stabilized or solidified.

If a layer is solidified, it becomes a new one Layer deposited as described and this in turn solidified and with the underlying, already finished connected layer connected. So is layer by layer the otoplastic or its shell created by additives Layer-by-layer application.

For industrial production is preferably not just the cut layer for an individual Otoplastic or its shell stored or solidified, but at the same time several individual ones. at Laser sintering solidifies e.g. the one laser, usually mirror-controlled, one behind the other the cut layers several earmolds or their shells, before all solidified cut layers are lowered together. Then, after laying a new layer of powder over all already solidified and lowered cut layers, in turn, the formation of several more Sectional layers. Despite this parallel production will be the respective earmolds or their shells, digital controlled, individually manufactured.

This is to solidify the multiple cut layers either a single laser beam is used and / or it more than one beam is operated in parallel and driven.

An alternative to this procedure is, respectively using a laser to solidify a cut layer while at the same time for the formation of another earmold or Otoplastikschale the powder layer is deposited. After that the same laser becomes the prepared powder layer, according to the cut layer for the further plastic solidified while lowered the previously solidified layer and there is a new powder layer is deposited. The laser then works intermittently between two or more Erective earmolds or earmold shells, the powder deposited by the formation of one of the Schalen resulting laser insert dead time for the Solidification of a cut layer of another in construction understood earmold is exploited.

In Fig. 1 is shown schematically how, in one embodiment, by means of laser sintering or laser or stereolithography more earmolds or their shells are manufactured industrially in a parallel process. Above the material bed 1 for powder or liquid medium, the laser with control unit 5 and beam 3 is mounted. In position 1, it solidifies the layer S _{1 of} a first otoplastic or its shell, driven by the first individual data set D ₁ . Thereafter, it is moved to a displacement device 7 in a second position, where he creates the layer S ₂ according to a further individual contour with the individual record D ₂ . Of course, several of the lasers can be moved as a unit and in each case more than one individual earmold layer can be created simultaneously. Only when the intended lasers 5 have produced the respective individual layers in all intended positions is the powder feed shown generally at 9 in the case of laser sintering deposited a new powder layer, while (not shown) in laser or stereolithography the solidified layers S be lowered in the fluid bed.

According to FIG. 2, at one or more of them Liquid or powder beds 1; with multiple simultaneously individually controlled lasers 5, layers solidified individual earmolds or their shells. Again, with the powder dispensing unit 9 after Completion of this solidification phase and after stopping The laser deposited a new layer of powder while in the The case of laser or stereolitography just solidified layers or already solidified structures be lowered in the fluid bed.

According to FIG. 3 solidifies laser 5 on a powder or liquid bed 1a, the layer S ₁ in order then to the bed 1b switch over (shown in phantom) to which the powder application device 9b ablates during the solidification phase at the bed 1a via a previously solidified layer S ₁ Powder or, in laser or stereolithography, the layer S _{1- is} lowered. Only when the laser 5 becomes active at the bed 1b is carried out with the powder dispenser 9a depositing a renewed layer of powder over the just solidified layer S ₁ at the bed 1a, or the layer S ₁ is done lowering in the fluid bed 1a.

When using the thermojet method and the analog Productivity increase simultaneously cut layers deposited by more than one earmold or its shells, practically in a drawing train by one Application header or, in parallel, by several.

By the illustrated method, it is possible, highest complex forms of earmolds and their shells too realize, both in terms of their outer shaping individual adaptation to the application area as well as what, in a shell whose As far as internal molding is concerned. Overhangs, inlets and outlets can be realized without further ado.

Furthermore, materials for additive build-up procedures known which to a rubber elastic and yet dimensionally stable shell can be formed, which, if desired, locally different up to extremely thin-walled and still can be realized tear resistant.

In a presently preferred embodiment, the Digitization of the individual application area, in particular the application area for a hearing aid, thereby in particular in-ear Höhrgerät, with a specialized institution, in the latter case at Audiologists, made. The recorded there Individual form, as digital 3D information, becomes especially in the context of hearing aids, to a Transmission of the production center, whether by transmission a data carrier, be it through internet connection etc. In the production center, especially using the above-mentioned method, the otoplastic or its shell, in the case under consideration, therefore, the in-the-ear hearing aid shell, individually shaped. Preferably, there is the Ready assembly of the hearing aid with the functional Assemblies made.

Due to the fact that, as mentioned, the used Thermoplastic materials in general to a relative elastic, conforming outer shape is, is also the shape regarding pressure points in earmolds or their shells far less critical than this until This was the case, especially for in-ear earmoulds is of crucial importance. So can In-ear earmolds, such as as Hearing protection devices, headphones, water protection devices, but especially for in-the-ear hearing aids, similar to rubber elastic grafting can be used, and it its surface nestles optimally to the Application area, the ear canal. Without further ado while incorporating one or more ventilation channels in the in-ear earmould possible to possibly relatively tight fit of the earmold in the Auditory canal unimpaired ventilation to the eardrum sure. It can with the individual 3D data of the application area during production also the Interior of the plastic optimized and optimally used, also individually regarding the possibly to be included individual aggregate constellation like one Hearing aid.

Especially with earmolds in the form of hearing aids can through the central manufacturing of their shells one central storage and management of individual data, both in terms of the individual application area, as well as the individual functional parts and their Settings to be made. Must, from which Whatever the reason, a shell can be replaced so it can easily by retrieving the individual records be made again without being a troublesome Re-adjustment - as up to - would be necessary.

Due to the fact that for the production of Otoplastics described method, but only for prototyping, are known and in the literature are described at this point, one is unnecessary Reproduction of all technical details regarding this Method.

In any case, surprises surprisingly from takeover This technology known from prototype construction for the industrial, commercially viable manufacturing of Otoplastics have very significant advantages, and that is true Reasons that, in itself, do not prevail in prototype construction are such as Elasticity of usable thermoplastic materials, the possibility of highest individually build thin-walled etc.

In summary, it is through use of the mentioned additive construction process for the production of Otoplastics or their shells possible, different to integrate functional elements that are constructive. already during the planning of the earmold on the computer be prepared and with the structure of the earmold or their shell are produced. Typically were Such functional elements so far only after the Completion of the earmold or its shell in this fitted or attached to it, what material Interfaces or material inhomogeneity to the Connecting points is recognizable.

For the mentioned earmolds, in particular with electronic fittings, such as for hearing aids, thereby especially for in-the-ear hearing aids, are such elements, those with the proposed technique directly into the Otoplastikschale can be installed, for example: Holders and holders for components, cerumen protection systems, Ventilation channels for in-ear earmoulds, Support elements, the in-ear earmolds latter in Ear canal, such as so-called claws (English channel locks).

FIG. 4 shows, for example and schematically, an in-ear earmold 11, for example an in-ear hearing aid, in which the acoustic output 13 to the eardrum protected by a cerumen cap 15. These Protective cap 15 is until now in the production as separate part on the shell 16 of the earmold 11th applied and for example by gluing or Fused welding. As in Fig. 5 in the same Depiction is shown by use of the mentioned additive construction process the cerumen cap 15a directly to the shell 16a of the otherwise identical in-ear earmold 11a integrated. At the in Fig. 4 with P schematically indicated joints, where at conventional methods forcibly a material inhomogeneity or interface arises, is according to Fig. 5 no such interfaces before, the material of Shell 16a goes homogeneously into that of the cerumen protective cap 15a over.

This just as an example, as known cerumen protection systems and other functional elements by using the mentioned Manufacturing process can be integrated integrally.

Below are some specific novel ones Otoplastics presented:

2. Inner Ear Otoplastics with Venting

• Bezüglich akustischem Verhalten: Die heute bekannten Belüftungsrinnen sind kaum an die jeweiligen akustischen Erfordernisse angepasst. So können sie kaum, bei aktiven Otoplastiken, wie z.B. bei Im-Ohr-Hörgeräten, dazu beitragen, die Rückkopplungsproblematik von elektromechanischem Ausgangswandler zu akustisch/elektrischem Eingangswandler wirksam lösen zu helfen. Auch bei passiven Im-Ohr-Otoplastiken, wie Gehörschutz-Einrichtungen, vermögen sie nicht, das erwünschte Schutzverhalten zu unterstützen und gleichzeitig die erwünschten Belüftungseigenschaften beizubehalten.
• Cerumenempfindlichkeit: Die heute eingesetzten Belüftungsrinnen in der Aussflächen von Im-Ohr-Otoplastiken sind äusserst Cerumenbildungs-empfindlich. Diese vermag, je nach deren Intensität, rasch die vorgesehene Belüftungsrinnen bezüglich ihrer Belüftungseigenschaften zu beeinträchtigen, wenn nicht gar vollständig zu verstopfen.

It is known to provide a ventilation channel on the outside for in-ear earmolds, in particular for Im-Oh hearing aids, as shown schematically in FIG. Such ventilation channels as used today are by no means optimized under various aspects:

• Regarding acoustic behavior: The ventilation channels known today are hardly adapted to the respective acoustic requirements. Thus, with active earmolds, such as for in-the-ear hearing aids, for example, they can hardly help to effectively solve the feedback problem from electromechanical output transducers to acoustic / electrical input transducers. Even with passive in-ear earmolds, such as hearing protection devices, they are not able to support the desired protective behavior while maintaining the desired ventilation characteristics.
• Cerumen sensitivity: The ventilation channels used today in the outer surfaces of in-ear earmoulds are extremely susceptible to cerumen formation. Depending on its intensity, this can rapidly impair, if not completely block, the ventilation channels intended for their ventilation properties.

It will be below for in-ear earmoulds, thereby especially for in-the-ear hearing aids or Ear protection devices, but also for earmolds, the only partially project into the ear canal, such as headphones, Ventilation arrangements proposed, which are the above Disadvantages of known arrangements at least partially remedy.

• nutenähnlich gegen die Gehörgangwandung mindestens zum Teil offen sind,
• die gegen die Wandung des Gehörganges hin vollständig geschlossen sind.

For this purpose, a distinction is made below ventilation systems that

• are at least partially open to the wall of the auditory canal,
• which are completely closed against the wall of the ear canal.

2a) Open against the wall of the ear canal ventilation systems

In FIGS. 7 (a) to (f), by perspective, schematic representations of excerpts of the am External ear canal 18 of in-ear earmoulds, novel ventilation groove profiles shown in detail. According to FIG. 7 (a), this is Profile of the ventilation groove 20a rectangular or square with predetermined, exactly adhered dimensioning ratios. According to Fig. 7 (b), the profile of Ventilation groove 20b Circular or elliptic sector-shaped, again with exactly predetermined cross-sectional boundary curve 21b. By exact specification and realization of the Cross-sectional shape of the provided ventilation grooves 20 can already some predictability and influence of the acoustic transmission conditions along this groove, in case of concerns on the inner canal wall, be realized. Of course, the acoustic behavior is also depending on the length with which the groove 20 along the earmold outer wall 18 extends.

In Figs. 7 (c) to (f) are further ventilation groove profiles which are additionally cerumen-protected. The Profile of the groove 20c according to Fig. 7 (c) is T-shaped.

Regarding the wide groove cross-sectional area at 27c effect the projecting parts 23c and the resulting Constriction 25c, against the wall of the auditory canal, already a considerable cerumen protection effect. Even though cerumen in The constriction 25c penetrates and hardens there thus no significant narrowing or even Blockage of the ventilation groove, which now closed Ventilation channel is. In Figs. 7 (d) to 7 (f), the explained principle of Fig. 7 (c), the Cross-sectional shape of the wide groove portion 27d to 27f with formed differently shaping, according to FIG. 7 (d) circular sector or according to the sector of a Ellipse, according to FIG. 7 (e) triangular, according to FIG. 7 (f) circular or elliptical.

Through targeted design of the groove cross-sectional area, such as this only by way of example with reference to FIGS. 7 (a) to 7 (f) can be shown, both in terms of acoustic Properties as well as regarding cerumen protection effect already in strong measure compared to conventional, more or Improved less randomly profiled ventilation grooves Make an impact. The profiles are under Consideration of the mentioned Cerumenschutzwirkung and the acoustic effect previously mathematically modeled and integrated exactly into the manufactured earmoulds. For this are particularly suitable for the above-mentioned additive construction method. To continue the acoustic The effect of the ventilation groove can be optimized along the novel ventilation grooves the most diverse acoustic impedances are realized what for example, according to FIG. 8 in vent grooves 29 results, which, progressing in their longitudinal direction, define different profiles as you like in Fig. 8 composed of profiles according to FIG. 7 are shown.

Similar to the design of passive electrical networks, can thereby the acoustic transmission behavior of the am Auditory canal adjacent groove mathematically modeled and be checked, then in the in-ear earmold or their Shell are integrated.

More targeted cerumen-protected sections can target in this case, exposed lots, as shown in Fig. 8 at A shown, are provided.

In addition, it may well be desired, especially with Look at the optimization of the acoustic conditions that designed ventilation grooves longer than this basically by the longitudinal extent of a considered In-ear otoplasty is given. As shown in FIG. 9, This is achieved by such grooves 31 with Training, as with reference to FIGS. 7 and 8, for example be represented, in predetermined curves along the Surface of the earmold be performed, for example as shown in Fig. 9, practically as the earmold thread-like grooves. Further Optimization flexibility is achieved by not doing so only one ventilation groove, but several on the surface the earmold are guided, as shown schematically in Fig. 10 is shown. The high flexibility of the groove design causes, depending on the application area in the auditory canal specifically different dimensions, with respect Cerumen protection and acoustic transmission conditions each optimized ventilation grooves along the earmold surface can be realized.

2b) Ventilation systems with fully integrated channels

This training variant of the novel ventilation systems is based at least partially completely in the Otoplasty integrated, against the auditory canal wall closed ventilation channels. This system will followed by his training on an earmold shell explained. But it is to be emphasized that if, then to the considered otoplasty no further aggregates too are integrated and she is trained as a full-plastic, Of course, the following explanations also apply on a channel guide arbitrarily by the mentioned Obtain full plastic throughout.

In Fig. 11 are in analogy to Fig. 7 different Cross-sectional shapes and area ratios of proposed ventilation channels 33a to 33e shown. As shown in Fig. 11 (a), it has in the earmold shell 35a built-in ventilation duct 33a rectangular or square cross-sectional shape. In the embodiment according to FIG. 11 (b) he has, 35b, a Kreissektor- or elliptical sector-shaped Channel cross-sectional shape. In the embodiment according to FIG. 11 (c), the intended ventilation passage 33c is circular or elliptical cross-sectional shape, while at the Embodiment according to FIG. 11 (d) a triangular Has cross-sectional shape.

In the embodiment according to FIG. 11 (e), FIG Otoplastikschale a complex internal shaping, e.g. a integrated support section 37th For optimal Space usage is the venting channel 35e provided here created with a cross-sectional shape that also complex Uses forms of Otoplastikschale. Accordingly, extends its cross-sectional shape partially complicates in the on the Shell 35e attached mounting bar 37 into it.

Looking back on the embodiment according to section 2a) it should be mentioned that such complex, optimally the Available space using cross-sectional shapes themselves also on against the auditory canal open ventilation grooves. can be realized, as well, vice versa, channel guides, such as they are shown for open grooves in Figs. 9 and 10, on closed ventilation channels.

In Fig. 12 is finally a variant of a fully integrated ventilation duct 39, the along its longitudinal extent, as shown for example, in the earmold shell 41, different Cross-sectional shapes and / or cross-sectional dimensions has, which in the sense of the realization of different acoustic impedance elements the acoustic Transmission behavior can be optimized. In this Context and to the following section ... referring, may also be noted that because of the possibility of complex acoustic impedance conditions to realize ventilation ducts especially in this Section shown closed construction, quite at least in sections simultaneously as acoustic Conductor sections on the output side active electromechanical Converter, such as the output side of microphones, for example in in-the-ear hearing aids, can be exploited.

In FIGS. 13 and 14, in analogy to FIGS. 9 and 10 shown as on the one hand to the respective earmold 43rd the integrated ones explained in this section Ventilation channels extended by appropriate web guide or on the other hand like two and more of the mentioned channels, possibly with different and / or varying Channel cross sections, in analogy to Fig. 12, at the Earmould be integrated.

By the in the sections 2a) and 2b) shown, also arbitrarily combinable possibilities open up the expert a myriad of design variants of the novel Ventilation systems and in particular to a large extent Freedom, because of the different, for yourself dimensionable parameters, for each individual Otoplasty optimal cerumen protection and optimal acoustic To create transfer conditions. At all Embodiments is preferably the specific individual design of the system calculated or mathematically modeled, the mentioned needs account supporting. Then the individual earmould is realized. Again, this is especially the beginning explained production methods with additive construction principle, as known from the prototype, then with the optimized model result is controlled.

3. Dimensional stability-optimized earmolds

This section is about new earmolds to imagine which optimally the dynamics of the Application areas are adapted. It is for example known that conventional in-ear earmolds of the relative large auditory canal dynamics, e.g. when chewing, not bill because of their essentially over all the same dimensional stability. Likewise For example, the acoustic conductors between outer ear hearing aids and auditory meatus of a dynamic of the Application area not free to follow. For in-ear earmoulds occurs the same problem, partly weakened, even with hearing protection devices, Headphones, water protection inserts etc. on. Especially is partly their intrinsic function, For example, protective effect, impaired when the mentioned application area dynamics increasingly account will be carried. As an example, this can be on known Ear protection devices made of elastically deformable Be noted that probably the mentioned Take account of application area dynamics as far as possible, but at the expense of their acoustic Transmission behavior.

In Fig. 15 is a schematic longitudinal sectional view an in-ear earmold reproduced in Fig. 16 a schematic cross-sectional view of a section this earmold. The earmold - e.g. to record electronic components - has a shell 45, the stocking-like, thin-walled made of elastic material. The dimensional stability of the - shown Smooth outside of the exemplary embodiment - shell skin becomes - where desired - by on the shell integrally inside patch Ribs 47, which, with respect to the shell skin, made of the same material.

Depending on the required dynamics of the in-ear earmold on the one hand, for example, that of the ear canal To take account of the requirements regarding the Support and protection of internals, as in an in-ear hearing aid, is the course of the wall thickness of Shell skin 45, the density and shape of the ribs 47 previously calculated and then the earmold after the calculated data. Again, this is suitable the manufacturing method explained above using additive construction process extremely well. Of course, the just explained training of In-ear earmould be combined with one Ventilation system, as with reference to FIGS. 7 to 14 was explained. In particular, the intended Ribs for influencing the dimensional stability or Flexibility in certain areas of otoplasty also with be formed of different cross-sectional profile, possibly also in their longitudinal extent progressing from one Cross section to the other.

In the form of a perspective view is in Fig. 17th purely, for example, the formation of the outer skin 45 with Ribs 47 with varying cross-sectional areas along their longitudinal extent shown schematically.

Instead of or in addition to the targeted wall reinforcement and targeted interpretation of the bending or torsion behavior, short of the form behavior, the in-ear otoplasty can, like mentioned, in addition to the Innenrippenbemusterung, as shown in 17 and 18 is shown, also a Außenrippenbemusterung be provided. As shown in FIGS. 18 and 19 will be on this, if necessary, by area different density, orientation and profile shape, on the outer surface of the earmold 49 a pattern of ribs 51st worked up.

According to FIG. 19, this can be for the considered here Otoplastics are used with cavity, but also for Otoplastics with no cavity, so for example with no electronic components, e.g. For Hearing protection devices or water protection devices. A such earmold is in a cross-sectional view shown schematically in Fig. 20. Here is the interior 53, for example, from extremely compressible Made of absorbent material and of a shaping Skin shell 55 surrounded with the rib pattern 57. In doing so Both "skin" 55 and rib pattern 57 are common integrally made. This is again the suitable at the beginning explained manufacturing process with the help of additive construction process. How far in the near future this additive construction process with change of processed Materials are realized on a workpiece, remain undecided. If this becomes possible, then the train is free, for example, on the embodiment according to FIG. 20 also the filler 53 simultaneously with the shell skin 55th and the ribs 57 in respective building layers sequentially build.

Looking back in particular to FIGS. 18 and 19 seen that with the help of the outer rib pattern at the same time ventilation channels or free spaces formed can be as purely schematic and example represented by the path P.

Returning again to FIG. 20, it is quite possible, if necessary and as shown in Fig. 20 by dashed lines at 57 _i is shown, even when that is in-the-ear ear device filled with material, thus not further for receiving units as of Elektronikbaueinheiten , it is intended to provide on the shell skin 55 an inner rib pattern 57 _i . As further shown in phantom at 59 in Fig. 20, earmolds may be provided which are likely to leave a cavity for male assemblies such as electronic components, but in which the space between such a lumen 59 is specific to the necessary volumes and shapes of additional designed units to be installed and the shell skin 55 is filled for example by a resilient or sound-absorbing material or components to be installed with such a material to the shell skin 55 are poured out.

The shell skin 55 or 45, according to Figures 15, 16 and 17, may well be made of electrically conductive material be manufactured, which at the same time an electric Shielding effect for internal electronic components is created. This also applies if necessary to the filling 53 according to FIG. 20.

With reference to Figures 15 to 20 was an earmold on Example of an in-ear otoplasty shown, the shell with shape stabilized with internal and / or external ribs is what an extremely light and targeted malleable Construction results. Of course, this construction method if necessary also with external ear earmoulds be used.

In Fig. 21 is another embodiment of an in-ear earmold shown, which targeted in one area bendable or compressible. The shell 61 of an earmold, in particular, the shell of an in-ear hearing aid has For this purpose in one or more predetermined areas one Corrugated tube formation 63 on what they, according to the respective needs, bending or is compressible. Although Fig. 21 of this approach with reference to Shell of an in-ear earmold, this can be Approach definitely and if necessary also for one Realize outer ear earmould. Again this will be preferably the initially explained Manufacturing process used.

Also in this embodiment, as shown by was explained in Fig. 20, the inner volume of Otoplasty with the requirements accordingly Fill material can be filled or integrated therein Internals are embedded in such filler material, which results in a higher stability of the device and improved acoustic conditions.

4. Modular housing / internals

In particular, in the case of in-the-ear hearing aids, there is the problem that the application area, i. the ear canal, his Shape changes. Obviously this is the case with adolescent people. But even with adults changes The auditory canal is sometimes strong, usually in narrowing Senses (e.g., so-called diver's ear).

With in-the-ear hearing aids thus results conventionally the problem that even when the hearing aid internals to be maintained over long periods of life could, for example, only the transmission behavior of the hearing aid according to the respective hearing conditions would have to be readjusted, but always new Hearing aids must be designed solely on the basis of Fact that the former is no longer satisfactory fit into the ear canal.

Already the measures explained in section 3 give the opportunity to improve this, due to the Fact that with it an automatic form adaptation of the Otoplasty to respective changing application areas is possible. This section aims to do this further measures, in particular based on in-ear earmoulds, be explained. But it is on it to point out that even with external ear earmolds, such as Outer ear hearing aids to open up the possibility to change the "case", and not just if that comfort is necessary, but also, after Desire, for example, the aesthetic appearance to change such external ear hearing aids.

In Fig. 22, an in-ear otoplasty 65 is schematically and in Longitudinal section shown what the formation of the interior space 67 substantially in the form of in Fig. 23 schematically represented, to be recorded electronic module 69th equivalent. The earmold 65 is made of rubber-elastic Material and can, as shown in Fig. 23, on the Electronics module 69 are slipped. The formation of the Interior 67 is such that the or possibly the a plurality of male modules form-fitting directly through the earmold 65 are positioned and held. Because of this approach, it is easily possible to have a and the same electronic modules 69 with different To provide earmolds 65, so as for example at a adolescent child of changing Ear canal training. The earmold will for the in-the-ear hearing aid for easy interchangeable disposable accessory. Not only to yourself changing conditions at the application area, namely the Auditory canal to take account of, but also easy Pollution reasons, the otoplasty 65 can easily change. This concept can even do that be exploited, if necessary - for example Auditory canal inflammations - to make medical applications For example, by applying drugs to the

Otoplastik-Außenfläche or at least, in order to periodically sterilized earmoulds use.

The concept illustrated with reference to FIGS. 22 and 23 course, with the in sections 2 and 3 combined concepts and it will be preferably the otoplastic 65 after the in section 1) explained manufacturing process, which the Education of the most complex internal shapes for play and play vibration-free recording of the module 69 allows.

As can be seen from FIGS. 22 and 23, the phase plate 1 otherwise provided in conventional in-the-ear hearing aids, for example, is built as part of the module holder, integrally with the otoplastic. The same applies to other mounts and recordings for electronic components of the hearing aid. If one realizes the layer-to-layer build-up method set forth in section 1), as in FIG. 22 dash-dotted lines and in the direction indicated by the arrow AB, then it would be readily possible for the otoplastic in the above-mentioned construction direction AB to be arranged according to requirements respective areas made of different materials. This also applies to the earmolds described in Sections 2) and 3) as well as to those explained in the following sections 5), 6) and 7). The example of Fig. 22, it is thus quite possible to produce the region 65 _a of rubber-elastic material, however, the output region 65 _b of dimensionally stable material.

In Fig. 24 is another embodiment of a Otoplasty, again as an example using an in-ear hearing aid, which is a simple, quick Replacement of internal fittings allows. in principle is suggested to be attached to an in-ear earmold Built-in earmold shell multi-piece and form assemblable, as Fig. 24 shows. through quick-acting closures, such as snap locks, Einklinkverschlüssen or even bayonet-like Closures is made possible at the in-ear earmold Casing parts 73a and 73b to be separated quickly, the Remove internals such as electronic modules and use them to reinstall in a new shell, possibly with a change Outside shaping or basically into a new shell, too if, for example, for cleaning reasons, Sterility reasons, etc. is required. Will be there intended to throw away the already used shell is it readily possible the connections of the shell parts form so that the shell opened only destructively can not, for example, from the outside accessible locking members such as pawls provided and cut the shell for their removal becomes.

This embodiment can of course with the hitherto described and yet to be described Variants are combined.

5. Integration of acoustic conductors in earmolds or their shells

It is for outer ear and in-ear hearing aids usual, intended acoustic / electrical converter or electro-acoustic output transducer input or on the output side assembled as separate parts acoustic conductors, namely tube-like structures, with the environment of the hearing aid to couple, or, especially at the input side acoustic / electrical Transducers, these with their receiving surface directly in the Place areas of the surfaces of the hearing aid, if necessary only through small cavities and Protective measures separate from the environment.

There is one in the design of such hearing aids relatively large bond, where in the hearing aid the actual Transducer and where on the hearing aid the actual Coupling openings are provided to the environment. It would be highly desirable, regarding the arrangement of Kpplungsöffnungen to the environment and arrangement of the mentioned Transducer within the hearing aid as possible To have freedom of conception.

This is basically achieved by the fact that the mentioned acoustic conductor - input side of acoustic / electrical converters or output side of electrical / acoustic transducers - in the earmold or in the wall of Otoplastikschalen be integrated.

In Fig. 25 this is shown purely schematically. One Converter module 75 has an acoustic input and output 77 on. The shell 79 of the earmold of an in-ear or an external ear hearing aid or a headphone, in you integrated, an acoustic conductor 81 on. He is lying at least in sections and as shown in Fig. 25 within the wall of Otoplastikschale 79th means acoustic stubs or line sections 83 preferably the respective acoustic impedance of acoustic conductor 81 adapted. This concept, with a view on outer ear hearing aids, allows along the Hearing placed and where desired acoustic To provide input openings 85, this over in the Otoplasty or its shell 87 integrated acoustic Head 89 to the intended acoustic / electrical Coupling converter 91, essentially independent of where these transducers 91 are installed in the hearing aid. So is in Fig. 26 only shown for example, two transducers to centralize a module and its inputs with the desired receiving openings 85 through the mentioned guide the acoustic conductor 89 to connect. From consideration of Figures 25 and 26 and the comments in Section 2) as to the novel ventilation systems, will that it is quite possible Ventilation channels also as acoustic conductor channels too use, especially when doing so, as shown in Fig. 25 schematized, by means of acoustic matching elements 83 the acoustic impedance conditions are designed specifically.

6. Marking of earmolds

In the manufacture of earmolds, in particular of in-ear earmolds, each one is individually for their adapted to each carrier. That's why it would be extreme desired, each manufactured earmold, as mentioned especially any in-ear earmold, especially so each in-ear hearing aid to mark. It will therefore proposed in the earmold or in the Shell, by indentations and / or by bulges one provide individual labeling, which together with the. individual orderer, e.g. Manufacturer, Product serial number, left-right application, etc. included can. Such labeling is far more preferred Manner in the manufacture of the earmold with the created under 1) Abtragverfahren. This will be Ensures that from the production any confusion Otoplastics is excluded. Especially important this is the case for the following, possibly automated Assembly with other modules, such as the Assembly of in-ear hearing aids.

This procedure can of course be combined with one or more of the sections 2) to 5) be realized aspects described.

7. Optimization of earmolds with respect to the dynamics of application area

For the formation of otoplastics for the in-ear application, such as for in-the-ear hearing aids, it is common today, from the ear canal, for example in silicone, to take a print. Now consider the relative great dynamic movement of the ear canal, for example during the chewing process, it can be seen that the support the in-ear Otoplastikform on a practically one Snapshot corresponding impression hardly to one Result leads to fully satisfy that in use can. As shown in FIG. 27 with reference to a simplified Function block / signal flow diagram is shown is from the dynamic application area, represented by the Block 93, on several of the dynamics in practice corresponding positions took form or, film-like, the dynamics of the application area are registered: The resulting records are in one Store unit 95 stored. Even with conventional Procedure by impression taking, this can be realized by moving from the application area to two or more Positions corresponding to the practical dynamics Imprints are taken.

Subsequently, these impressions are scanned and the respective digital data records into the memory unit 95 stored. As another possibility, for example, the Dynamics of the application area due to X-rays be recorded.

There are therefore several depending on the accuracy to be achieved "Pictures" or even practically a "movie" of the movement pattern registered by the application area of interest. The in the memory unit 95 registered data then fed to a computing unit 97. On the output side, the arithmetic unit 97 controls the Manufacturing process 99 for the earmold. For example, and As is usual today, in-ear earmolds made with relatively hard shell, so calculates the computing unit 97th from the dynamic data stored at the memory unit 95 and optionally, as shown schematically at K, another Manufacturing parameters, the best fit for the Otoplasty for optimal comfort in everyday life achieved while preserving its functionality. Will the too manufactured otoplastic according to the section set out in section 3) Realized principle, it is at the arithmetic unit 97th determines which earmold areas should be shaped in terms of flexibility, bendability, compressibility etc. On the output side controls, as mentioned, the arithmetic unit 97 the manufacturing process 99, preferably the Manufacturing process, as described in section 1) as the preferred Process was set out.

Claims (6)

Outer-ear hearing aid with an earmold and an electrical / acoustic transducer with an acoustic output, which is connected via an acoustic conductor with a coupling opening on the outer surface of the earmold, wherein at least a part of the outer surface of the earmold is formed by an interior defining one-piece Otoplastikschale , characterized in that the acoustic conductor extends as a channel within and along the one-piece, the part of the outer surface defining Otoplastikschale and is completely surrounded by the Otoplastikschale material. Outer-ear hearing aid according to claim 1, characterized in that the channel is formed along its length with varying cross-sectional area and / or shape. Outer-ear hearing aid according to one of claims 1 or 2, characterized in that a Anpassstich line for adjusting the acoustic transmission conditions between the coupling opening and the output of the electrical / acoustic transducer opens into the channel, which is also surrounded by the material of the Otoplastikschale. Hearing aid according to one of claims 1 to 3, characterized in that the channel extends at least along a substantial portion of its length substantially parallel to the otoplastic outer surface. Outer-ear hearing aid according to one of claims 1 to 4, characterized in that at least two of the channels, signal-wise at least partially guided in parallel, are present. Outer-ear hearing aid according to one of claims 1 to 5, characterized in that the acoustic conductor leads into the ear canal.

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