CN202077178U - Novel in-the-ear hearing aid - Google Patents

Abstract

The utility model discloses a novel in-the-ear hearing aid. The novel in-the-ear hearing aid comprises a machine body and a sound transmission system and is characterized in that the machine body is detachably connected with the sound transmission system. The novel in-the-ear hearing aid provided by the utility model can be placed in the ear completely, has high invisibility, and still maintains elastic contact with auditory meatus. The front part of the novel in-the-ear hearing aid can be placed close to the deep auditory meatus of human eardrum, so people can wear the novel in-the-ear hearing aid comfortably and stably; and air in the ear is ventilated during wearing and people is difficult to sweat even if wearing for a long time, so sound feedback and occlusion effect are effectively reduced; and the conducted sound is clear and the gain loss is small, so the novel in-the-ear hearing aid is suitable for any patients with slight to severe deafness to use. The novel in-the-ear hearing aid provided by the utility model can be bent in the three-dimensional auditory meatus randomly, is suitable for the bending degrees of different individuals, can pass in and out comfortably and can be stably retained in the auditory meatus, so ear seal or ear molds are not required to be manufactured, and the adaptive process and time of wearing the hearing aid are greatly reduced.

Description

A kind of novel in-the-ear hearing aid

Technical field

The utility model relates to a kind of flexible hearing devices or hearing aid device of general meaning substantially, especially relates to a kind of novel in-the-ear hearing aid of human body three-dimensional duct of each unique shape of can crookedly comfily therefore can fitting.

Background technology

The producer of production figures formula hearing aids generally all is absorbed in increasing hearing aids power to obtain contents such as bigger audio output signal or gain, inhibition ambient noise, elimination acoustic feedback signal at present, is used for guaranteeing the quality of output signal.The consequence that produces is: even the quality of output signal is fine, but the gain that the user effectively receives seldom, and the user can not obtain hearing aid effect preferably.Because the customized type hearing aids generally all is placed on the auricle, ear-level hearing aid be positioned over hard of hearing after, the acoustic distance human body ear-drum that loud speaker sends also has a suitable segment distance, because sound wave conduction damping and reflection reciprocation, can cause sound loss in the conductive process in the duct of this section complex physiologic structure, 20%～30% gain loss is nearly generally arranged, and therefore many severe hearing loss patients complain that hearing aids power is little.

For disguise is worn in the operating efficiency and the increase that improve hearing aids, utility model full duct-type (CIC) or inner ear type hearing aids, thereby reduce the loss in the conductive process in ear.Because inner ear type hearing aids volume is very little, the accommodation space of parts is very limited, therefore must and make as far as possible for a short time with parts design, and installs it very compact.The small and exquisite side effect that produces of volume is that therefore hearing aids power also reduce, and the sound gain that expectation produces is little.

Full duct-type (CIC) hearing aids is a kind of customized type hearing aids, needs earlier to join the center each tin barrier patient duct is printed ear mold testing, and then ear mold is delivered to the manual hearing aids housing of manufacturing of factory.Because the hearing aids body is not exposed to the ear outside, its disguise is by force that part is listened the barrier target that the patient pursued, but just because of being placed in the ear, the black-out effect that its side effect produces, feedback squealing, because of with duct contact firmly comprehensively can not adapt to the relative motion of duct muscle influence wear stability and owing to 3 D complex duct dissect physiology structure make its be difficult to be placed into dark duct, etc. be its main disadvantage.

To join the center and can unify the understanding filling in " customization passenger family order " time in order to make to test, be convenient to test and join the duct length of the center being done by customizing mechanism and select, improve to test and join testing first of center and be made into power, hereby, bibliographical information carries out standard definition to duct dissect physiology structure.Explain duct length such as cropped ear road 21, MEC 22, screech owl road 23, dark duct 24 by Figure 12.

Cropped ear road 21: but the center line of the first bend a1 and the second bend a2 (being applicable to that generally hearing loss better and not influences the hearing aids selection person that the customization machine is worn outward appearance, is not suitable for CIC).

MEC 22: cross the center line of the first bend a1 and the second bend a2, but the second bend a2 (be applicable to the hearing aids selection person that hearing loss is slightly good, be not suitable for CIC).

Screech owl road 23: (be applicable to the hearing aids selection person of hearing loss summary weight or CIC) about the 1mm of the second bend a2 excessively.

Dark duct 24: the 3～5mm (be applicable to that hearing loss is heavier, reach the hearing aids selection person who tests polarity limit scope of hearing aids, not too be applicable to big, the better or older ITE apolegamy person of hearing loss of the curved a2 degree of second bend) that crosses the second bend a2.

Machine is the novel full duct CIC formula hearing aids that grows up on common customization machine basis in recent years in the universal ear, and it does not need each patient's duct printing ear mold and makes by hand specially.But the fixing main bigger earplug in outstanding end that relies in duct, duroplasts body contact firmly with duct and slide with the duct muscular movement that causes owing to talking, eat food, have a drink etc.Technical problem underlying is can't go deep into duct, can not eliminate black-out effect and feedback squealing, wear stability and comfort level is relatively poor.

A kind of universal in-the-ear hearing aid is disclosed in Application No. is the patent of US709254381, as shown in figure 13, the speaker portion of in-the-ear hearing aid can be rotated flexibly, it is a kind of in-the-ear hearing aid that is fit to use in any duct, its loud speaker is deep into ear inside, relatively near the human body ear-drum at dark duct place, reduce hearing aids and in ear, transmitted gain loss in the sound process, improved the operating efficiency of hearing aids.Its in-the-ear hearing aid afterbody also is provided with a fixing backguy or a bar, has made things convenient for the taking-up of in-the-ear hearing aid.But the speaker portion rotation elevation angle is no more than 30 degree, can not adapt to the requirement of human antrum auris corner angle up to 60 degree; Cause near the air in duct center not circulate during use, the phenomenon of perspiration occurs, allow the user wear and feel under the weather, be difficult to be placed into position near the human body ear-drum.

Figure 14 is the structural representation of the universal trendy in-the-ear hearing aid of excellent Li Kang (UNITRON), its support and duct keep the space, guaranteed the circulation of air in the ear, wear for a long time and be difficult for perspiring, loud speaker is also near the human body ear-drum, reduce hearing aids and in ear, transmitted gain loss in the sound process, improved the operating efficiency of hearing aids.Its in-the-ear hearing aid afterbody also is provided with a stretchable pull bar, has made things convenient for the taking-up of in-the-ear hearing aid.But its sound conduction device is the device that is rigidly connected, such hearing aids in use often runs into following situation: its in-the-ear hearing aid has the outer rigid housing of fixed in shape, in the time of in being placed into the human body ear, because the length of user's duct is different with size and shape, it is uneven to cause shell to contact with duct, the part position is stressed too high, and the wearer is done not feel like oneself.The fixing main outstanding bigger earplug in end that relies in duct, the duroplasts body contacts firmly with duct and slides with the duct muscular movement.Technical problem underlying is because first half can not be crooked, can't go deep into the three-dimensional structure complexity duct, can not eliminate black-out effect and feedback squealing, wear stability and comfort level is relatively poor.And it fixing mainly fills in duct by body, and hard body is hard the contact with duct, can produce the relative motion between body and the muscle when the duct muscular movement, causes fixing instability and produces noise.Therefore, these side effects cause this product not produce desired effect on market.

The utility model content

Can not satisfy the required product defects in market at above-mentioned, the purpose of this utility model is to provide a kind of novel in-the-ear hearing aid that can all be placed in the ear, it possesses following characteristic: wear good concealment, can keep Elastic Contact with duct, can be placed to the dark duct place very close to the human body ear-drum, its comfortable wearing is stable, ear inner air flow when wearing is worn also difficult the perspiration for a long time, effectively eliminates black-out effect and feedback squealing, the sound that transmits is clear, and gain loss is little.Hearing aids of the present utility model is fit to slight any impaired hearing patient to severe to be used.

The technical solution of the utility model is: auditory prosthesis in a kind of novel ear, comprise body and sound transmission system, it is characterized in that, between described body and the described transmission sound system for removably connecting.

In preferred embodiment of the utility model, described body comprises the male connector device, described transmission sound system comprises recessed electrical connector, soft connection device and ear mold, can form the hearing equipment that can be put into and take out three-dimensional dark duct comfily after described these parts are installed together, described body and described transmission sound system are joined together by described protruding, recessed electrical connector.

Variation as above embodiment, on the interior auditory prosthesis of novel ear of the present utility model, described body comprises recessed electrical connector, described transmission sound system comprises male connector device, soft connection device and ear mold, can form the hearing equipment that can be put into and take out dark duct comfily after described these parts are installed together, described body and described transmission sound system are joined together by described concave, convex electrical connector.

In the utility model preferred embodiment, the recessed electrical connector of described transmission sound system is arranged on the end of described soft connection device.

In preferred embodiment of the utility model, described soft connection device to small part is the hose type structure, and described hose type structure and described recessed electrical connector cooperating.

In preferred embodiment of the utility model, the material of described hose type structure can be single or compound material, medical grade or non-medical grade thermoplastic elastomer (TPE), silica gel, nonmetal or metallic elastic material.

In preferred embodiment of the utility model, the length of described hose type structure and angle of bend can and freely be controlled according to the three-dimensional dissect physiology malformation of human antrum auris.

In preferred embodiment of the utility model, the part outer wall of described hose type structure or inwall or part tube wall are bellows-shaped, perhaps a kind of or its combination in screw thread, vertical bar line or the slanted bar line shape.

In preferred embodiment of the utility model, the outer wall of the part of closing on described body of described hose type structure or inwall or tube wall are bellows-shaped, perhaps a kind of or its combination in screw thread, vertical bar line or the slanted bar line shape.

In preferred embodiment of the utility model, the vault outer surface undulate of described ear mold and/or continuously smooth and/or gauffer and/or convex-concave groove and/or umbrella and/or room roofing tile shape are provided with, the vault neighboring of ear mold be provided with a plurality of evenly or opening and/or the non-opening gauffer and/or the convex-concave groove of non-uniform Distribution.

As further optimizing structure of above embodiment, described a plurality of evenly and/or the width of the opening of non-uniform Distribution and/or non-opening gauffer and/or convex-concave groove and length account for 3% to 25% of ear mold vault outside girth.

In preferred embodiment of the utility model, described transmission sound system also comprises loud speaker, and described loud speaker is positioned at described soft connection device.Described loud speaker profile can be column type or polygonal cylinder type, and described soft connection device inner wall shape is also corresponding to be column type or polygonal cylinder type.Described soft connection device outer wall can be circle or polygon on perpendicular to longitudinal axis cross section.

In preferred embodiment of the utility model, the width of the vault of described ear mold or diameter are 5 to 15 millimeters.

In preferred embodiment of the utility model, ear mold vault thickness is 0.5 to 3 millimeter, can be even constant thickness from the external diameter to the internal diameter, also can be even or non-uniform change thickness.

In preferred embodiment of the utility model, described transmission sound system also comprises anti-earwax device, and described anti-earwax device is positioned at soft connection device, is positioned at an end of described loud speaker.

In preferred embodiment of the utility model, described novel in-the-ear hearing aid also comprises Tiebar structure, described Tiebar structure has one or more flexible supporting legs or support, after in duct, being out of shape by compression, its strain potential energy can be fixed in hearing aids stable machine ground in the duct, and the material of described Tiebar structure can be single or compound material, medical grade or non-medical grade thermoplastic elastomer (TPE), silica gel, nonmetal or metallic elastic material.

The in-the-ear hearing aid that the utility model discloses, because the part meter of the transmission sound system that in-the-ear hearing aid is established becomes by soft connection device to form, because this hose type structure can be bent to comply with each difference and wear the buckling curve of individual duct, therefore can be placed on comfily in the duct and be need not to make ear mold, be worn the procedure of adaptation and time thereby reduced hearing aids greatly.

Description of drawings

Fig. 1 is the end view of the user mode that is positioned at duct of an embodiment of the utility model in-the-ear hearing aid.

Fig. 2 is the side view of an embodiment of the utility model in-the-ear hearing aid.

Fig. 3 is the side view of the state of transmission sound system when body disassembles of an embodiment of the utility model in-the-ear hearing aid.

Fig. 4 is the explosive view of an embodiment of the utility model in-the-ear hearing aid.

Fig. 5 is the end view of the utility model soft connection device embodiment plumbness.

Fig. 6 is the end view of the utility model soft connection device embodiment bending state.

Fig. 7 is the end view of the utility model transmission sound system and ear mold embodiment.

Fig. 8 is the cutaway view along Fig. 7 A-A line.

Fig. 9 is a kind of planform of the utility model ear mold embodiment.

Figure 10 is another planform of the utility model ear mold embodiment.

Figure 11 is another planform of the utility model ear mold embodiment.

Figure 12 is the dissect physiology structural representation of bibliographical information human antrum auris.

Figure 13 is the structural representation of a kind of universal in-the-ear hearing aid of United States Patent (USP).

Among the figure, 10 is in-the-ear hearing aid, and 20 is duct, and 11 is body, 12 transmission sound systems, 1 is recessed electrical connector, 2 is soft connection device, 3 is loud speaker, and 4 are anti-earwax device, and 5 is ear mold, 51 is opening, and 6 is jockey, and 7 is Tiebar structure, 21 is the cropped ear road, and 22 is MEC, and 23 is the screech owl road, 24 is dark duct, and a1 is first bend, and a2 is second bend.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby protection range of the present utility model is made more explicit defining so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that.

Referring to Figure of description 1 and 2, a kind of novel in-the-ear hearing aid 10 of the present utility model comprises body 11 and sound transmission system 12.As shown in Figure 3, for removably connecting, body 11 is provided with male connector device 6 between body 11 and the transmission sound system 12.Referring to accompanying drawing 4, be depicted as the composition of the transmission sound system 12 of in-the-ear hearing aid 10 of the present utility model, comprise a male connector device (referring to Fig. 3), a recessed electrical connector 1, a soft connection device 2, be illustrated as flexible pipe among the utility model embodiment, a loud speaker 3, an anti-earwax device 4 and an ear mold 5, wherein, ear mold 5 is members that a profile roughly is mushroom or semi-open umbrella, make by flexible material, material can be for single or compound, medical grade or non-medical grade thermoplastic elastomer (TPE), silica gel, nonmetal or metallic elastic material, the outer and/or inner surface undulate of ear mold 5 vaults and/or the smooth and/or gauffer of shape and/or convex-concave groove and/or umbrella and/or room roofing tile shape are provided with continuously.The surrounding edge of the vault of ear mold 5 be provided with a plurality of evenly or little opening or the non-opening gauffer or the convex-concave groove of non-uniform Distribution.Interior and/or the outer edge line of the cutaway view that obtains along the direction perpendicular to the mushroom handle of ear mold 5 is the curve of petal-shaped and/or wavy fluctuating.

Referring to Fig. 1～3, in preferred embodiment of the utility model, described novel in-the-ear hearing aid also comprises Tiebar structure 7, described Tiebar structure 7 has one or more flexible supporting legs or support, supporting leg or support can be preceding barb-shaped or back barb-shaped, also can right and wrong barb-shaped, as long as energy strain, the hearing aids body is pressed to the ear wall and kept certain pressure, promptly can the fixed hearing aid body, after in duct, being out of shape by compression, its strain potential energy can be fixed in hearing aids stable machine ground in the duct, and the material of described Tiebar structure 7 can be single or compound material, medical grade or non-medical grade thermoplastic elastomer (TPE), silica gel, nonmetal or metallic elastic material.

In the utility model embodiment, the width of ear mold 5 vaults or diameter are 5 to 15 millimeters, and the opening of a plurality of even or non-uniform Distribution that ear mold 5 vault neighborings are provided with or the width of non-opening gauffer or convex-concave groove and length account for 3% to 25% of ear mold vault outside girth.Ear mold vault thickness is 0.5 to 3 millimeter, can be even constant thickness from the external diameter to the internal diameter, also can be even or non-uniform change thickness.Loud speaker 3 and anti-earwax device 4 all are positioned at soft connection device 2 (participation Fig. 8) in the utility model embodiment, can certainly be that part is positioned at soft connection device 2.The hearing devices that duct is worked can be put into and be taken out to each these component-assembled comfily to just having constituted one together, both the transmission sound of body 11 being sent by soft connection device 2 was to the ear-drum of more close human body, and by loud speaker 3 being arranged in the soft connection device 2 near ear mold 5 parts, it also is the ear-drum part of the more close human body ear of loud speaker 3, make the volume of whole in-the-ear hearing aid 10 can accomplish minimum, and the loss of sound that hearing aids amplifies or gain is also minimum, thereby the sound amplification effect of realizing in-the-ear hearing aid 10 is more remarkable.Body 11 is joined together by protruding, recessed electrical connector with transmission sound system 12.The body 11 of in-the-ear hearing aid 10 of the present utility model is connected with soft connection device 2 by the method that protruding, recessed electrical connector is connected, thereby realizes and being connected of transmission sound system 12.Here, also can recessed jockey be set on body 11, in the transmission sound system side protruding jockey be set, the connection by the concave, convex jockey realizes being connected between body 11 and the transmission sound system.

Provided the footpath direct sum case of bending of soft connection device 2 respectively referring to Figure of description 5 and 6.In a preferred implementation of the present utility model, the material of the hose type structure of soft connection device 2 can be single or compound, medical grade or non-medical grade thermoplastic elastomer (TPE), silica gel, nonmetal or metallic elastic material.In another one preferred implementation of the present utility model, the length of the hose type structure of soft connection device 2 and angle of bend can and freely be controlled according to the three-dimensional dissect physiology malformation of human antrum auris.In another one preferred implementation of the present utility model, the outer wall of the part of closing on described body of the hose type structure of soft connection device 2 or inwall or tube wall are bellows-shaped, the perhaps combination of one or more shapes in screw thread, vertical bar line or the slanted bar line shape, the other part of soft connection device 2 then can not break-in.The diameter in the cross section at any position of the hose type structure of soft connection device 2 should be less than 6 millimeters.The cross section of the hose type structure of soft connection device 2 can be an Any shape but perimeter of section should be less than 19 millimeters.In another one preferred implementation of the present utility model, the outer wall of described hose type structure can be circle or polygon on perpendicular to longitudinal axis cross section.

Referring to accompanying drawing 7 and accompanying drawing 8, in the assembling assumption diagram of transmission sound of the present utility model system 12, recessed electrical connector 1 is arranged in the inner chamber of an end of close body 11 of soft connection device 2, this part also be soft connection device 2 can free bend part, with form rigidity intensity enough can be adaptive with the male connector device 6 on the body 11 structure.The part of close body 11 1 ends of soft connection device 2 is provided with ripple, and remainder is the footpath straight pipe wall, and such structure setting can make whole auditory prosthesis the duct better and people fit.As shown in Figure 8, the cutaway view of the transmission sound system of auditory prosthesis of the present utility model, under the assembled state, the end that loud speaker 3 is filled in the close ear mold 5 of soft connection device 2 also is enclosed in the soft connection device 2 fully, and an end that has neck of loud speaker 3 is towards people's ear-drum.Anti-earwax device 4 is fastened on the opening part near the end on top of soft connection device 2, and the ear mold of being made by flexible material 5 is packaged in the outside of part straight of soft connection device 2, so that total has performance more reliably.

The novel flexible in-the-ear hearing aid 10 that the utility model discloses, owing to three parts before, during and after in-the-ear hearing aid 10 is designed to, the intermediate portion is made up of soft connection device 2, its soft connection device 2 length and angle of bend can freely be controlled, make wearer's comfortable wearing, so just realized the novel flexible in-the-ear hearing aid 10 of patient's use of suitable different ducts; In-the-ear hearing aid 10 of the present utility model is worn for a long time and is difficult for perspiring, and its loud speaker 3 makes the sound of transmission more clear near human body ear-drum place.Body 11 outsides can also be provided with an elastic silicone rubber circle, make in-the-ear hearing aid 10 and human antrum auris 20 remain Elastic Contact, wear stable, avoid when the duct muscular movement, producing and hearing aids between mutual slip.

The shape of ear mold of the present utility model can be general mushroom or the semi-open isostructural various deformation of umbrella.To shown in Figure 11, the interior and/or outer surface of the vault of ear mold 5 can undulate and/or smooth continuously and/or gauffer and/or convex-concave groove and/or umbrella and/or the setting of room roofing tile shape as Figure of description 9.As shown in Figure 9, the neighboring of the vault of ear mold 5 be provided with a plurality of evenly or opening 51 and/or the non-opening gauffer and/or the convex-concave groove of non-uniform Distribution.The internal structure of ear mold 5 then can be set to circumferentially sealing or do not seal, radially fold into formula structure, round-corner transition between every layer the structure layer by layer from what push up the edge.As variation, as shown in figure 11, the internal structure of ear mold 5 also can be set to circumferentially sealing or do not seal, radially fold into formula structure layer by layer from what push up the edge, form acute angle between every layer the structure.As another variation, as shown in figure 10, the sideline, inside that the internal structure of ear mold 5 also can be set to section is lumpy continuous inner surface.The diameter of the middle column hollow parts vertically of ear mold 5 is a bit larger tham the diameter of loud speaker 3.

The above; it only is embodiment of the present utility model; but protection range of the present utility model is not limited thereto; any those of ordinary skill in the art are in the disclosed technical scope of the utility model; variation or the replacement that can expect without creative work all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range that claims were limited.

Claims (16)

1. a novel in-the-ear hearing aid comprises body and sound transmission system, it is characterized in that, between described body and the described transmission sound system for removably connecting.

2. novel in-the-ear hearing aid according to claim 1, it is characterized in that, described body comprises the male connector device, described transmission sound system comprises recessed electrical connector, soft connection device and ear mold, can form the hearing equipment that can be put into and take out dark duct comfily after described these parts are installed together, described body and described transmission sound system are joined together by described protruding, recessed electrical connector.

3. novel in-the-ear hearing aid according to claim 1, it is characterized in that, described body comprises recessed electrical connector, described transmission sound system comprises male connector device, soft connection device and ear mold, can form the hearing equipment that can be put into and take out dark duct comfily after described these parts are installed together, described body and described transmission sound system are joined together by described concave, convex electrical connector.

4. novel in-the-ear hearing aid according to claim 2 is characterized in that, the recessed electrical connector of described transmission sound system is arranged on the end of described soft connection device.

5. novel in-the-ear hearing aid according to claim 4 is characterized in that, described soft connection device to small part is the hose type structure, and described hose type structure and described concave, convex electrical connector cooperating.

6. novel in-the-ear hearing aid according to claim 5 is characterized in that, the material of described hose type structure can be single or compound material, medical grade or non-medical grade thermoplastic elastomer (TPE), silica gel, nonmetal or metallic elastic material.

7. novel in-the-ear hearing aid according to claim 5 is characterized in that, the length of described hose type structure and angle of bend can and freely be controlled according to the distortion of human antrum auris dissect physiology three-dimensional structure.

8. novel in-the-ear hearing aid according to claim 5 is characterized in that, the part outer wall of described hose type structure or inwall or part tube wall are bellows-shaped, perhaps a kind of or its combination in screw thread, vertical bar line or the slanted bar line shape.

9. novel in-the-ear hearing aid according to claim 5, it is characterized in that, the outer wall of the part of closing on described body of described hose type structure or inwall or tube wall are bellows-shaped, perhaps a kind of or its combination in screw thread, vertical bar line or the slanted bar line shape.

10. according to the described novel in-the-ear hearing aid of one of claim 2-9, it is characterized in that, in the vault of described ear mold and/or outer surface undulate and/or smooth continuously and/or gauffer and/or convex-concave groove and/or umbrella and/or room roofing tile shape be provided with, the vault neighboring of ear mold be provided with a plurality of evenly or opening and/or the non-opening gauffer and/or the convex-concave groove of non-uniform Distribution.

11. novel in-the-ear hearing aid according to claim 10 is characterized in that, described a plurality of evenly and/or the width of the opening of non-uniform Distribution and/or non-opening gauffer and/or convex-concave groove and length account for 3% to 25% of ear mold vault outside girth.

12. according to the described novel in-the-ear hearing aid of one of claim 2～9, it is characterized in that, described transmission sound system also comprises loud speaker, described speaker portion or all be positioned at described soft connection device, described loud speaker profile can be column type or polygonal cylinder type, described soft connection device inner wall shape is also corresponding to be column type or polygonal cylinder type, and described soft connection device outer wall can be circle or polygon on perpendicular to longitudinal axis cross section.

13., it is characterized in that the width of the vault of described ear mold or diameter are 5 to 15 millimeters according to the described novel in-the-ear hearing aid of one of claim 2～9.

14., it is characterized in that ear mold vault thickness is 0.5 to 3 millimeter according to the described novel in-the-ear hearing aid of one of claim 2～9, can even constant thickness from the external diameter to the internal diameter, also can be even or non-uniform change thickness.

15., it is characterized in that described transmission sound system also comprises anti-earwax device according to the described novel in-the-ear hearing aid of one of claim 2～9, described anti-earwax device partly or entirely is positioned at soft connection device, is positioned at an end of described loud speaker.

16. according to the described novel in-the-ear hearing aid of one of claim 2～9, it is characterized in that, described novel in-the-ear hearing aid also comprises Tiebar structure, described Tiebar structure has one or more flexible supporting legs or support, after in duct, being out of shape by compression, its strain potential energy can be fixed in hearing aids stable machine ground in the duct, and the material of described Tiebar structure can be single or compound material, medical grade or non-medical grade thermoplastic elastomer (TPE), silica gel, nonmetal or metallic elastic material.

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