WO2021248437A1 - 一种骨传导助听装置 - Google Patents

一种骨传导助听装置 Download PDF

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Publication number
WO2021248437A1
WO2021248437A1 PCT/CN2020/095766 CN2020095766W WO2021248437A1 WO 2021248437 A1 WO2021248437 A1 WO 2021248437A1 CN 2020095766 W CN2020095766 W CN 2020095766W WO 2021248437 A1 WO2021248437 A1 WO 2021248437A1
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WO
WIPO (PCT)
Prior art keywords
hearing aid
aid device
bone conduction
vibration
conduction hearing
Prior art date
Application number
PCT/CN2020/095766
Other languages
English (en)
French (fr)
Inventor
吉阳
普强凌
Original Assignee
声佗医疗科技（上海）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 声佗医疗科技（上海）有限公司 filed Critical 声佗医疗科技（上海）有限公司
Priority to EP20824067.1A priority Critical patent/EP3952342B1/en
Priority to US17/275,174 priority patent/US11696080B2/en
Priority to AU2020309092A priority patent/AU2020309092B1/en
Priority to PCT/CN2020/095766 priority patent/WO2021248437A1/zh
Priority to JP2021504537A priority patent/JP7262846B2/ja
Publication of WO2021248437A1 publication Critical patent/WO2021248437A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • H04R25/606—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers acting directly on the eardrum, the ossicles or the skull, e.g. mastoid, tooth, maxillary or mandibular bone, or mechanically stimulating the cochlea, e.g. at the oval window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone

Definitions

  • This article relates to but not limited to the field of hearing aids, and in particular to a bone conduction hearing aid device.
  • bone conduction hearing aids on the market are bone anchored hearing aids, whose working principle is to convert sound into vibration and conduct it to the cochlea through the skull to achieve the purpose of improving hearing.
  • Bone conduction hearing aids are usually implanted into the bone through titanium nail threads. Therefore, the installation of hearing aids requires surgical implantation, which results in inconvenient installation of the hearing aids.
  • the present application provides a bone conduction hearing aid device, comprising: a housing, a piezoelectric vibration component, and a vibration transmission element, the piezoelectric vibration component and the vibration transmission element are both arranged in the housing, and the vibration transmission
  • the first end of the element is connected to the piezoelectric vibration assembly, and the second end is connected to the housing, and the housing includes a vibration output portion that outputs vibration through contact.
  • FIG. 1 is a schematic diagram of a cross-sectional structure of a bone conduction hearing aid device according to an embodiment of the application;
  • FIG. 2 is a schematic diagram of the front structure of the bottom shell of the bone conduction hearing aid device according to the embodiment of the application;
  • FIG. 3 is a schematic diagram of the bottom structure of the bottom shell of the bone conduction hearing aid device according to the embodiment of the application;
  • FIG. 4 is a schematic diagram of the left structure of the bottom shell of the bone conduction hearing aid device according to the embodiment of the application;
  • Fig. 5 is a schematic diagram of the front view of the vibration transmission element of the bone conduction hearing aid device according to the embodiment of the application;
  • FIG. 6 is a schematic diagram of a bottom view of the vibration transmission element of the bone conduction hearing aid device according to an embodiment of the application;
  • Fig. 7 is a left structural schematic diagram of a vibration transmission element of a bone conduction hearing aid device according to an embodiment of the application.
  • FIG. 8 is a schematic diagram of the front view structure of the counterweight of the bone conduction hearing aid device according to the embodiment of the application.
  • FIG. 9 is a schematic diagram of the bottom structure of the counterweight of the bone conduction hearing aid device according to the embodiment of the application.
  • FIG. 10 is a schematic diagram of the right side view of the structure of the counterweight of the bone conduction hearing aid device according to the embodiment of the application;
  • FIG. 11 is a schematic diagram of the front view of the piezoelectric vibrator of the bone conduction hearing aid device according to an embodiment of the application;
  • FIG. 12 is a schematic bottom view of the piezoelectric vibrator of the bone conduction hearing aid device according to an embodiment of the application.
  • FIG. 13 is a schematic diagram of the right side view of the structure of the piezoelectric vibrator of the bone conduction hearing aid device according to the embodiment of the application;
  • FIG. 14 is a schematic diagram of the front structure of the upper cover of the bone conduction hearing aid device according to the embodiment of the application;
  • FIG. 15 is a schematic diagram of the bottom structure of the upper cover of the bone conduction hearing aid device according to the embodiment of the application;
  • 16 is a schematic diagram of the left structure of the upper cover of the bone conduction hearing aid device according to the embodiment of the application;
  • FIG. 17 is a schematic structural diagram of the bone conduction hearing aid device in use according to an embodiment of the application.
  • FIG. 18 is a schematic diagram of the relationship between frequency and output gain of the bone conduction hearing aid device according to an embodiment of the application.
  • 19 is a schematic diagram of the relationship between frequency and output gain after the damping of the elastic damping member of the bone conduction hearing aid device of the embodiment of the application is increased;
  • 20 is a schematic diagram of the relationship between frequency and output gain after the damping of the elastic damping member of the bone conduction hearing aid device of the embodiment of the application is reduced.
  • 100 bone conduction hearing aid device; 1: shell; 11: bottom shell; 12: top cover; 13: protrusion; 14: fixing groove; 15: cable hole; 16: bottom wall; 17: top wall; 2: Piezoelectric vibrator; 21: Wire; 3: Counterweight; 31: Support surface; 32: Support part; 33: Avoidance groove; 34: Protrusion; 4: Elastic damping member; 5: Vibration transmission element; 51 : Curved mating surface; 52: mounting groove; 6: adhesive; 200: fixing parts; 300: electric control parts; 400: teeth.
  • An embodiment of the present application provides a bone conduction hearing aid device 100, as shown in FIG. 1, comprising: a housing 1, a piezoelectric vibration component, and a vibration transmission element 5.
  • the piezoelectric vibration component and the vibration transmission element 5 are both arranged in the housing In the body 1, the first end of the vibration transmission element 5 is connected to the piezoelectric vibration assembly, and the second end is connected to the housing 1.
  • the housing 1 includes a vibration output part that outputs vibration through contact.
  • the vibration output part is arranged to be in contact with the tooth 400.
  • the vibration output part may be in contact with the crown of the tooth 400.
  • the piezoelectric vibration component can vibrate according to the electrical signal generated by the sound, and transmit the vibration to the housing 1 through the vibration transmission element 5.
  • the vibration output part of the housing 1 can be connected to the tooth 400 (such as Dental crown) and so on, and can transmit vibration to the tooth 400, so that the vibration is transmitted to the cochlea through the skull, so as to achieve the purpose of improving hearing.
  • the housing 1 of the bone conduction hearing aid device 100 transmits vibration through non-invasive contact, so that the bone conduction hearing aid device 100 does not need to be anchored to the skull by surgery when it is installed, only the bone conduction hearing aid device 100 is in contact with the tooth 400 That is, the installation is convenient, and the use convenience of the bone conduction hearing aid device 100 is improved.
  • the vibration output part may be provided in contact with the skin.
  • the vibration of the vibration output part can be transmitted to the bones through the skin, and then to the cochlea, so as to achieve the purpose of improving hearing.
  • the vibration output part is arranged to be in contact with one tooth 400 or two adjacent teeth 400.
  • the vibration output part is in contact with the side walls of two adjacent teeth 400 (such as crowns), so that the vibration can be transmitted to the two teeth 400, which increases the effectiveness and reliability of vibration transmission and improves the assistance. Listen to the effect.
  • the teeth 400 in contact with the vibration output portion may be molars inside the oral cavity.
  • the vibration output portion includes an outwardly protruding protrusion 13 provided on the bottom wall 16 of the housing 1, and the protrusion 13 interacts with the vibration
  • the second end of the transmission element 5 (the bottom end of the vibration transmission element 5, the lower end in FIG. 1) is connected, and the outer surface of the protrusion 13 is arranged to be in contact with the tooth 400 (such as a crown).
  • Both ends of the vibration transmission element 5 are respectively connected to the piezoelectric vibration component and the vibration output part of the housing 1, so as to directly transmit the vibration of the piezoelectric vibration component to the vibration output part, which improves the amplitude of the vibration output part and the effectiveness of the output vibration. It is beneficial to improve the hearing aid effect.
  • the vibration output part includes a protruding part 13 which is arranged on the bottom wall 16 of the housing 1 (on the side close to the tooth 400), and the outer surface of the protruding part 13 can achieve close contact with the tooth 400. It can enhance the reliability of contact, thereby improving the effectiveness of vibration transmission, so as to improve the hearing aid effect.
  • the vibration transmission element 5 is similar to a knocking block, and the tooth 400 is struck by the protrusion 13 of the housing 1 to cause the tooth 400 to vibrate, so that the vibration is transmitted to the tooth 400.
  • the protrusion 13 is arc-shaped, and the inner and outer surfaces of the protrusion 13 are arc-shaped, and the vibration transmission element 5 includes and protrusion
  • the inner surface of the part 13 is matched with an arc-shaped mating surface 51.
  • the arc-shaped mating surface 51 is adhesively fixed to the inner surface of the protrusion 13, and the outer surface of the protrusion 13 is set to be in contact with the side wall surface of the adjacent tooth 400 .
  • the protruding part 13 can extend between two teeth 400, and the arc-shaped outer surface of the protruding part 13 can ensure effective contact with the side wall surfaces of two adjacent teeth 400 (such as the side wall surface of the crown), and the contact is closer It is reliable, and the vibration of the protrusion 13 can be transmitted to the two teeth 400, which increases the effectiveness and reliability of vibration transmission and improves the hearing aid effect.
  • the protruding portion 13 can form a wave structure on the bottom of the shell 1, which is beneficial to improve the elasticity and vibration characteristics of the shell 1, so as to transmit vibration to the tooth 400 through the shell 1.
  • the bottom of the vibration transmission element 5 is in the shape of a half moon, and the bottom surface of the half moon is an arc-shaped mating surface that matches the inner surface of the protrusion 13 51.
  • the vibration output part includes a protruding part 13 integrally formed on the bottom wall 16 of the housing 1.
  • the vibration output part may be formed separately from other parts of the housing 1, and may be connected to other parts of the housing 1 (such as the bottom wall 16 of the housing 1) or connected to the vibration transmission element 5.
  • the piezoelectric vibration assembly includes a piezoelectric vibrator 2, two weights 3, and an elastic damping member 4.
  • the middle portion of the piezoelectric vibrator 2 and the first end of the vibration transmission element 5 In a fixed connection, the two counterweights 3 are respectively arranged on both sides of the piezoelectric vibrator 2, and the elastic damping member 4 is disposed between the piezoelectric vibrator 2 and the bottom wall 16 of the casing 1, and the counterweight 3 and the casing 1 Between the bottom wall 16.
  • the middle part of the piezoelectric vibrator 2 is fixed to the vibration transmission element 5, and counterweights 3 are arranged on both sides to form a piezoelectric vibration assembly formed by simply supported beams fixed in the middle and vibrating on both sides.
  • the weight 3 can follow the vibration and increase the vibration force transmitted by the vibration transmission element 5.
  • the arrangement of the elastic damping member 4 enables the force output of the piezoelectric vibrating component to ensure the gain while taking into account the frequency band, so that the output gain and the bandwidth reach a balanced compromise.
  • the counterweight 3 includes a supporting surface 31, and the supporting surface 31 is provided with a supporting portion 32 protruding toward the piezoelectric vibrator 2, and the supporting portion 32 supports On the piezoelectric vibrator 2, an adhesive 6 is provided between the supporting surface 31 of the counterweight 3 and the piezoelectric vibrator 2.
  • the counterweight 3 is provided with a protruding support portion 32 which is in contact with the piezoelectric vibrator 2 so that the contact area between the counterweight 3 and the piezoelectric vibrator 2 is small and prevents the vibration of the piezoelectric vibrator 2 from being affected.
  • An adhesive 6 is provided between the supporting surface 31 of the weight 3 and the piezoelectric vibrator 2.
  • the adhesive 6 will not affect the vibration of the piezoelectric vibrator 2, mainly because the bonding surface between the weight 3 and the piezoelectric vibrator 2 is The relative displacement during vibration is small, and the adhesive 6 can provide an elastic support between the counterweight 3 and the piezoelectric vibrator 2 to prevent the counterweight 3 from loosening during vibration.
  • the adhesive 6 between the supporting surface 31 of the weight 3 and the piezoelectric vibrator 2 is M-11 glue produced by Loctite.
  • the projection of the center of gravity of the weight 3 on the piezoelectric vibrator 2 falls on the contact surface between the support portion 32 of the weight 3 and the piezoelectric vibrator 2.
  • the projection of the center of gravity of the counterweight 3 on the piezoelectric vibrator 2 falls on the contact surface between the support portion 32 of the counterweight 3 and the piezoelectric vibrator 2, so that the installation of the counterweight 3 is stable, and the counterweight 3 can be prevented from being vibrated. Skew occurs.
  • a portion of the counterweight 3 located outside the piezoelectric vibrator 2 is provided with a protrusion 34 protruding toward the bottom wall 16 of the housing 1.
  • the protrusion 34 and the piezoelectric vibrator There is a gap between the vibrators 2.
  • the arrangement of the protrusion 34 can utilize the space on both sides of the piezoelectric vibrator 2 in the housing 1 to increase the weight of the counterweight 3 and increase the vibration force transmitted by the vibration transmission element 5. There is a gap S between the protrusion 34 and the adjacent side wall surface of the piezoelectric vibrator 2 to prevent the protrusion 34 from influencing the vibration of the piezoelectric vibrator 2 after contacting the piezoelectric vibrator 2.
  • the counterweight 3 is a tungsten steel block, which has a high specific gravity and low cost.
  • the elastic damping member 4 includes silicone rubber with a Shore hardness of 45-65 filled on the bottom of the housing 1, and the silicone rubber is far from the bottom of the housing 1.
  • One end of the wall 16 is flush with the supporting surface 31 of the counterweight 3.
  • the end (the top end) of the silicone rubber with the Shore hardness shore-00 of 45-65 away from the bottom wall 16 of the housing 1 is flush with the supporting surface 31 of the counterweight 3, that is, flush with the adhesive 6, so that the counterweight A part of the block 3 and the piezoelectric vibrator 2 are immersed in silicon rubber.
  • the Shore-00 hardness of the silicone rubber is 55.
  • the silicone rubber may be 4086 silicone rubber provided by Nusil.
  • Rubber of different hardness has different output performance. As shown in Figure 18, the hardness of silicone rubber is within a certain range (for example, 45-65 Shore hardness shore-00). The elastic damping of silicone rubber enables the output gain and bandwidth of the device to reach a compromise balance, which can satisfy Use needs.
  • the piezoelectric vibrator 2 is made of piezoelectric ceramic material.
  • the first end of the vibration transmission element 5 is provided with a mounting groove 52, and the middle part of the piezoelectric vibrator 2 is fixed to the mounting groove 52 by gluing.
  • the mounting groove 52 is a trough structure with an opening at the top and penetrating both sides, that is, the mounting groove 52 has a bottom wall and two side walls, and the middle part of the piezoelectric vibrator 2 can be installed Inside the groove 52, and fixed to the installation groove 52 with an adhesive.
  • the piezoelectric vibrator 2 is fixed to the bottom wall and the two side walls of the mounting groove 52, so that the vibration is transmitted to the vibration transmission element 5 through the three wall surfaces, and the vibration transmission effect is good.
  • the casing 1 is a plastic casing.
  • the housing 1 may be made of a plastic HU1010 produced by Sabic Company.
  • the housing 1 is made of metal hollow shrapnel.
  • the hollow structure on the metal hollow shrapnel can improve the elasticity of the shrapnel.
  • a sealing film can be wrapped on the outside of the metal hollow shrapnel to prevent saliva from entering the bone conduction hearing aid device 100 .
  • the wall thickness of the housing 1 is 0.3 mm-0.5 mm. In an exemplary embodiment, the wall thickness of the housing 1 made of HU1010 plastic is 0.4 mm.
  • the top wall 17 (the side away from the tooth 400) of the housing 1 is provided with a fixing groove 14, and the fixing groove 14 is configured to fix the bone conduction aid.
  • the fixing member 200 of the listening device 100 is provided with a fixing groove 14, and the fixing groove 14 is configured to fix the bone conduction aid.
  • the groove wall of the fixing groove 14 is provided with a wire hole 15 that communicates the fixing groove 14 with the inner cavity of the housing 1.
  • the wire 21 (as shown in FIGS. 11-13) connected to the piezoelectric vibrator 2 can pass through the wire hole 15 and extend out of the housing 1 so as to be electrically connected to the electronic control component 300.
  • the fixing member 200 is U-shaped and has a hollow structure.
  • the fixing member 200 is configured to clamp the tooth 400, and the wire 21 connected to the piezoelectric vibration assembly passes through the wire.
  • the hole 15 extends into the fixing member 200 and is electrically connected to the electric control component 300 fixed at the other end of the fixing member 200.
  • the bone conduction hearing aid device 100 and the electronic control component 300 are respectively arranged on both sides of the tooth 400 (ie, the buccal side and the lingual side).
  • the fixing member 200 is a U-shaped steel pipe with good corrosion resistance.
  • the bone conduction hearing aid device 100 may be arranged on the buccal side of the tooth (such as a molar) 400, and the electronic control component 300 may be arranged on the lingual side of the tooth (such as a molar) 400.
  • Two ends of the shaped fixing member 200 are connected to the bone conduction hearing aid device 100 and the electronic control component 300 respectively.
  • the U-shaped fixing member 200 bypasses the back side of the tooth (such as a molar) 400, and clamps the crown of the tooth (such as a molar) 400 on both sides, so as to realize the bone conduction hearing aid device 100 and the electronic control component 300 through an interference fit.
  • the wire 21 connected to the piezoelectric vibrator 2 of the piezoelectric vibration assembly can extend into the fixing member 200 after passing through the wire hole 15, and is electrically connected to the electric control component 300 fixed at the other end of the fixing member 200.
  • an escape groove 33 is provided on the top of the counterweight 3 to avoid the fixing groove 14 where the fixing member 200 is installed on the housing 1.
  • the housing 1 includes a bottom housing 11 and a top cover 12, and the bottom housing 11 and the top cover 12 are fixed by glue, so that the housing 1 The sealing and waterproof performance is good.
  • the vibration output part (the protrusion 13) can be provided on the bottom wall 16 of the bottom shell 11, and the fixing groove 14 can be provided on the top wall 17 of the top cover 12.
  • any controlled vibration requires precise design of the damping elastic structure, so as to obtain a balance of various elements and an ideal force output.
  • the main problem of the piezoelectric vibrator is that the vibration output bandwidth is in the middle and high frequency, and the output bandwidth is related to the size of the piezoelectric vibrator. If the bandwidth is required to be wider, the size of the piezoelectric vibrator needs to be larger. If the piezoelectric vibrator is used in a small-sized part with limited space and a better bandwidth is also desired, it is necessary to design an appropriate damping elastic structure to reduce the peak value, expand the bandwidth, and shift the frequency band from high to low. frequency.
  • the wavy structure formed by the thin-walled shell of plastic material, the protruding part at the bottom of the shell, and the damping elastic structure formed by the filled elastic silicone rubber make the bone conduction hearing aid device have good vibration characteristics .
  • top indicating the orientation or positional relationship refers to the side far away from the skin, bones or teeth in contact with the bone conduction hearing aid device
  • bottom refers to the side close to the bone conduction aid. The side of the skin, bones, or teeth that the hearing device touches.

Abstract

一种骨传导助听装置，包括壳体、压电振动组件和振动传递元件，所述压电振动组件和所述振动传递元件均设置在所述壳体内，所述振动传递元件的第一端与所述压电振动组件连接，第二端与所述壳体连接，所述壳体包括通过接触来输出振动的振动输出部。

Description

一种骨传导助听装置 技术领域
本文涉及但不限于助听设备领域，尤其涉及一种骨传导助听装置。
背景技术
目前，市场上存在的骨传导助听装置，均为骨锚式助听装置，其工作原理是将声音转换成振动后通过颅骨传导到耳蜗，以实现改善听力的目的。骨传导助听装置通常通过钛钉螺纹植入骨头，因此助听器安装时需要通过外科植入，导致助听器的安装不便。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请提供了一种骨传导助听装置，包括：壳体、压电振动组件和振动传递元件，所述压电振动组件和所述振动传递元件均设置在所述壳体内，所述振动传递元件的第一端与所述压电振动组件连接，第二端与所述壳体连接，所述壳体包括通过接触来输出振动的振动输出部。
在阅读并理解了附图概述和本申请实施例的实施方式后，可以明白其他方面。
附图概述
图1为本申请实施例的骨传导助听装置的剖面结构示意图；
图2为本申请实施例的骨传导助听装置的底壳的主视结构示意图；
图3为本申请实施例的骨传导助听装置的底壳的仰视结构示意图；
图4为本申请实施例的骨传导助听装置的底壳的左视结构示意图；
图5为本申请实施例的骨传导助听装置的振动传递元件的主视结构示意 图；
图6为本申请实施例的骨传导助听装置的振动传递元件的仰视结构示意图；
图7为本申请实施例的骨传导助听装置的振动传递元件的左视结构示意图；
图8为本申请实施例的骨传导助听装置的配重块的主视结构示意图；
图9为本申请实施例的骨传导助听装置的配重块的仰视结构示意图；
图10为本申请实施例的骨传导助听装置的配重块的右视结构示意图；
图11为本申请实施例的骨传导助听装置的压电振子的主视结构示意图；
图12为本申请实施例的骨传导助听装置的压电振子的仰视结构示意图；
图13为本申请实施例的骨传导助听装置的压电振子的右视结构示意图；
图14为本申请实施例的骨传导助听装置的上盖的主视结构示意图；
图15为本申请实施例的骨传导助听装置的上盖的仰视结构示意图；
图16为本申请实施例的骨传导助听装置的上盖的左视结构示意图；
图17为本申请实施例的骨传导助听装置的使用状态的结构示意图；
图18为本申请实施例的骨传导助听装置的频率-输出增益的关系示意图；
图19为本申请实施例的骨传导助听装置的弹性阻尼件的阻尼增大后的频率-输出增益的关系示意图；
图20为本申请实施例的骨传导助听装置的弹性阻尼件的阻尼减小后的频率-输出增益的关系示意图。
附图标记：
100：骨传导助听装置；1：壳体；11：底壳；12：顶盖；13：凸出部；14：固定槽；15：过线孔；16：底壁；17：顶壁；2：压电振子；21：导线；3：配重块；31：支撑面；32：支撑部；33：避让凹槽；34：凸起；4：弹性阻尼件；5：振动传递元件；51：弧形配合面；52：安装槽；6：胶粘剂；200：固定件；300：电控部件；400：牙齿。
详述
下文中将结合附图对本申请实施例进行说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
在下面的描述中阐述了很多实施方式以便于充分理解本申请实施例，但是，本申请实施例还可以采用其他不同于在此描述的方式来实施，因此，本申请实施例的保护范围并不受下面公开的实现方式的限制。
本申请实施例提供了一种骨传导助听装置100，如图1所示，包括：壳体1、压电振动组件和振动传递元件5，压电振动组件和振动传递元件5均设置在壳体1内，振动传递元件5的第一端与压电振动组件连接，第二端与壳体1连接，壳体1包括通过接触来输出振动的振动输出部。
一些示例性实施例中，如图17所示，振动输出部设置成与牙齿400接触。其中，振动输出部可与牙齿400的牙冠接触。
该骨传导助听装置100中，压电振动组件可根据声音产生的电信号进行振动，并通过振动传递元件5将振动传递给壳体1，壳体1的振动输出部可与牙齿400(如牙冠)等接触，并可将振动传递给牙齿400，以便振动通过颅骨传导到耳蜗，以实现改善听力的目的。
该骨传导助听装置100的壳体1通过非侵入式接触来传递振动，使得骨传导助听装置100安装时无需通过外科手术锚固至颅骨，只需将骨传导助听装置100与牙齿400接触即可，安装方便，提高了骨传导助听装置100的使用便捷性。
在其他示例性实施例中，振动输出部可设置成与皮肤接触。振动输出部的振动可通过皮肤传递给骨头，进而传导到耳蜗，以实现改善听力的目的。
一些示例性实施例中，振动输出部设置成与一颗牙齿400或相邻两颗牙齿400接触。
如图17所示，振动输出部与相邻两颗牙齿400(如牙冠)的侧壁面接触，使得振动可传递给两颗牙齿400，增加了振动传递的有效性与可靠性，改善了助听效果。
一些示例性实施例中，与振动输出部接触的牙齿400可为口腔内侧的磨牙。
一些示例性实施例中，如图1-图4和图17所示，振动输出部包括设置在壳体1的底壁16上的向外凸出的凸出部13，凸出部13与振动传递元件5的第二端(振动传递元件5的底端，图1中的下端)连接，凸出部13的外表面设置成与牙齿400(如牙冠)接触。
振动传递元件5的两端分别与压电振动组件和壳体1的振动输出部连接，以便将压电振动组件的振动直接传递至振动输出部，提高了振动输出部的振幅以及输出振动的有效性，有利于改善助听效果。振动输出部包括设置在壳体1的底壁16(靠近牙齿400一侧)上的向外凸出的凸出部13，通过该凸出部13的外表面可实现与牙齿400的紧密接触，可增强接触的可靠性，进而提高振动传递的有效性，以改善助听效果。
振动传递元件5类似敲击块，通过壳体1的凸出部13敲击牙齿400，使牙齿400振动，实现了将振动传递给牙齿400。
一些示例性实施例中，如图1-图7和图17所示，凸出部13呈弧形，且凸出部13的内表面和外表面呈弧形，振动传递元件5包括与凸出部13的内表面相适配的弧形配合面51，弧形配合面51与凸出部13的内表面粘接固定，凸出部13的外表面设置成与相邻牙齿400的侧壁面接触。
凸出部13可伸入两颗牙齿400之间，凸出部13的弧形外表面可确保与相邻两颗牙齿400的侧壁面(如牙冠的侧壁面)实现有效接触，接触更加紧密可靠，且凸出部13的振动可传递给两颗牙齿400，增加了振动传递的有效性与可靠性，改善了助听效果。
如图1所示，凸出部13可在壳体1的底部形成波浪结构，有利于提高壳体1的弹性及振动特性，以便通过壳体1将振动传递给牙齿400。
一些示例性实施例中，如图1和图5-图7所示，振动传递元件5的底部呈半月形，半月形的底面为与凸出部13的内表面相适配的弧形配合面51。
一些示例性实施例中，振动输出部包括一体成型在壳体1的底壁16上的凸出部13。在其他示例性实施例中，振动输出部可与壳体1的其他部分独立 成型，并可与壳体1的其他部分(如壳体1的底壁16)连接或者与振动传递元件5连接。
一些示例性实施例中，如图1所示，压电振动组件包括压电振子2、两个配重块3和弹性阻尼件4，压电振子2的中部与振动传递元件5的第一端固定连接，两个配重块3分别设置在压电振子2的两侧，弹性阻尼件4设置在压电振子2与壳体1的底壁16之间、以及配重块3与壳体1的底壁16之间。
压电振子2的中部与振动传递元件5固定，两侧设置配重块3，形成中间固定、两侧振动的简支梁形成的压电振动组件。压电振子2振动时，配重块3可跟随振动，并增大振动传递元件5传递的振动力。弹性阻尼件4的设置，使得压电振动组件的力的输出在保证增益的同时又能兼顾频带，使得输出增益和频宽达到平衡折中。
一些示例性实施例中，如图1和图8-图10所示，配重块3包括支撑面31，支撑面31上设有朝向压电振子2凸出的支撑部32，支撑部32支撑在压电振子2上，配重块3的支撑面31与压电振子2之间设有胶粘剂6。
配重块3上设有凸出的支撑部32，该支撑部32与压电振子2接触，使得配重块3与压电振子2的接触面积小，防止影响压电振子2的振动。
配重块3的支撑面31与压电振子2之间设有胶粘剂6，胶粘剂6不会影响压电振子2的振动，主要是因为配重块3和压电振子2之间的结合面在振动时相对位移较小，同时该胶粘剂6又能够给配重块3和压电振子2之间提供一个弹性支撑，防止在振动时配重块3松脱。
一些示例性实施例中，配重块3的支撑面31与压电振子2之间的胶粘剂6为乐泰Loctite公司生产的M-11胶水。
一些示例性实施例中，如图1所示，配重块3的重心在压电振子2上的投影落在该配重块3的支撑部32与压电振子2的接触面上。
配重块3的重心在压电振子2上的投影落在配重块3的支撑部32与压电振子2的接触面上，使得配重块3安装稳定，可防止振动时配重块3发生歪斜。
一些示例性实施例中，如图1所示，配重块3的位于压电振子2外侧的部分上设有朝向壳体1的底壁16凸出的凸起34，凸起34与压电振子2之间具有间隙。
凸起34的设置，可利用壳体1内压电振子2两侧的空间，增加配重块3的重量，增大振动传递元件5传递的振动力。凸起34与压电振子2的相靠近的侧壁面之间具有间隙S，以防止凸起34与压电振子2接触后影响压电振子2的振动。
一些示例性实施例中，配重块3为钨钢块，钨钢块的比重大、成本低。
一些示例性实施例中，如图1所示，弹性阻尼件4包括填充在壳体1的底部的邵氏硬度shore-00为45-65的硅橡胶，且硅橡胶的远离壳体1的底壁16的一端与配重块3的支撑面31平齐。
邵氏硬度shore-00为45-65的硅橡胶的远离壳体1的底壁16的一端(即顶端)与配重块3的支撑面31平齐，即与胶粘剂6平齐，使得配重块3的一部分和压电振子2浸在硅橡胶内。
一个示例性实施例中，硅橡胶的邵氏硬度shore-00为55。
一个示例性实施例中，硅橡胶可采用纽赛尔(Nusil)公司提供的型号为4086的硅橡胶。
不同硬度的橡胶有不同的输出表现。如图18所示，硅橡胶的硬度在一定范围(如邵氏硬度shore-00为45-65)内，硅橡胶的弹性阻尼使得装置的输出增益和频宽可达到一个折中平衡，可满足使用需要。
如图19所示，如果硅橡胶的硬度增大，阻尼增大，导致内部的负载消耗增加，输出增益下降，图形的明显变化就是被压扁(输出增益降低)，频宽变宽。输出增益和频宽是两个负相关的参数，需要输出增益(图形上边缘足够高)的同时保持频宽(上边缘足够宽)的一个权衡位置。
如图20所示，如果硅橡胶的硬度降低，内部阻尼变小，就会出现明显的共振峰。共振现象会导致频谱范围内能量输出不均衡，如果是单一频点输出要求的设备(如超声波发生器)，会比较喜欢高的共振峰，对于一个需要更宽频带的设备，希望输出的能量在整个频段应该是平坦均衡的。
一些示例性实施例中，压电振子2为压电陶瓷材料制成。
一些示例性实施例中，如图7所示，振动传递元件5的第一端设有安装槽52，压电振子2的中部通过胶粘固定至安装槽52。
一个示例性实施例中，如图7所示，安装槽52为顶端开口、两侧贯通的槽体结构，即安装槽52具有底壁和两侧壁，压电振子2的中部可安装在安装槽52内，并通过胶粘剂胶粘固定至安装槽52。压电振子2与安装槽52的底壁和两侧壁固定，以便通过三个壁面将振动传递给振动传递元件5，振动传动效果好。
一些示例性实施例中，壳体1采用塑料壳体。一个示例性实施例中，壳体1可采用sabic公司生产的型号为HU1010的塑料制成。
一些示例性实施例中，壳体1采用金属镂空弹片制成。金属镂空弹片上的镂空结构可改善弹片的弹性。
一个示例性实施例中，骨传导助听装置100安装在口腔内并与牙齿400接触来传递振动时，可在金属镂空弹片的外侧包裹密封膜，以防止唾液等进入骨传导助听装置100内部。
一些示例性实施例中，壳体1的壁厚为0.3mm-0.5mm。一个示例性实施例中，HU1010塑料制成的壳体1的壁厚为0.4mm。
一些示例性实施例中，如图1和图14-图16所示，壳体1的顶壁17(远离牙齿400一侧)设有固定槽14，固定槽14设置成用于固定骨传导助听装置100的固定件200。
一些示例性实施例中，如图1和图14-图16所示，固定槽14的槽壁上设有连通固定槽14与壳体1的内腔的过线孔15。与压电振子2连接的导线21(如图11-图13所示)可穿过过线孔15、伸出壳体1外，以便与电控部件300电连接。
一些示例性实施例中，如图17所示，固定件200呈U形，且为空心结构，固定件200设置成用于夹紧牙齿400，与压电振动组件连接的导线21穿过过线孔15后伸入固定件200内，并与固定在固定件200的另一端的电控部件300电连接。
一些示例性实施例中，如图17所示，骨传导助听装置100和电控部件300分别设置在牙齿400的两侧(即颊侧和舌侧)。
一些示例性实施例中，固定件200为U形钢管，耐腐蚀性能好。
一个示例性实施例中，如图17所示，骨传导助听装置100可设置在牙齿(如磨牙)400的颊侧，电控部件300可设置在牙齿(如磨牙)400的舌侧，U形固定件200的两端分别与骨传导助听装置100和电控部件300。U形固定件200绕过牙齿(如磨牙)400的后侧，并且两侧夹紧牙齿(如磨牙)400的牙冠，以通过过盈配合实现骨传导助听装置100和电控部件300的固定。与压电振动组件的压电振子2连接的导线21穿过过线孔15后可伸入固定件200内，并与固定在固定件200的另一端的电控部件300电连接。
一些示例性实施例中，如图10所示，配重块3的顶部设有避让凹槽33，以便避让壳体1上安装固定件200的固定槽14。
一些示例性实施例中，如图1-图4和图14-图16所示，壳体1包括底壳11和顶盖12，底壳11和顶盖12通过胶粘固定，使得壳体1的密封防水性能好。其中，振动输出部(凸出部13)可设置在底壳11的底壁16上，固定槽14可设置在顶盖12的顶壁17上。
任何受控的振动(频宽和振幅)都需要精密设计阻尼弹性结构，这样才能得到一个兼顾各种要素并且有理想的力输出。一些情况中，压电振子主要的问题是振动输出频宽在中高频，而且输出频宽和压电振子的尺寸具有相关性，如果需要频带越宽，压电振子的尺寸就需要做的越大，如果在空间受限的小尺寸部位使用压电振子，同时还希望获得比较好的频宽，就需要设计恰当的阻尼弹性结构来降低峰值、扩展频宽，并且把频带从高向低进行移频。本申请实施例中，通过塑料材质的薄壁壳体、壳体底部的凸出部形成的波浪结构、以及填充的弹性硅橡胶形成的阻尼弹性结构，使骨传导助听装置具有良好的振动特性。
在本申请实施例的描述中，指示方位或位置关系的术语“顶”是指远离与骨传导助听装置接触的皮肤、骨骼或牙齿的一侧，术语“底”是指靠近与骨传导助听装置接触的皮肤、骨骼或牙齿的一侧。
虽然本申请实施例所揭露的实施方式如上，但所述的内容仅为便于理解本申请实施例而采用的实施方式，并非用以限定本申请实施例。任何本申请实施例所属领域内的技术人员，在不脱离本申请实施例所揭露的精神和范围的前提下，可以在实施的形式及细节上进行任何的修改与变化，但本申请实施例的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (15)

  1. 一种骨传导助听装置，包括：壳体、压电振动组件和振动传递元件，所述压电振动组件和所述振动传递元件均设置在所述壳体内，所述振动传递元件的第一端与所述压电振动组件连接，第二端与所述壳体连接，所述壳体包括通过接触来输出振动的振动输出部。
  2. 如权利要求1所述的骨传导助听装置，其中，所述振动输出部设置成与牙齿接触。
  3. 如权利要求2所述的骨传导助听装置，其中，所述振动输出部设置成与一颗牙齿或相邻两颗牙齿接触。
  4. 如权利要求2所述的骨传导助听装置，其中，所述振动输出部包括设置在所述壳体的底壁上的向外凸出的凸出部，所述凸出部与所述振动传递元件的第二端连接，所述凸出部的外表面设置成与牙齿接触。
  5. 如权利要求4所述的骨传导助听装置，其中，所述凸出部呈弧形，且所述凸出部的内表面和外表面呈弧形，所述振动传递元件包括与所述凸出部的内表面相适配的弧形配合面，所述弧形配合面与所述凸出部的内表面粘接固定，所述凸出部的外表面设置成与相邻两颗牙齿的侧壁面接触。
  6. 如权利要求1-5中任一项所述的骨传导助听装置，其中，所述压电振动组件包括压电振子、两个配重块和弹性阻尼件，所述压电振子的中部与所述振动传递元件的第一端固定连接，两个所述配重块分别设置在所述压电振子的两侧，所述弹性阻尼件设置在所述压电振子与所述壳体的底壁之间、以及所述配重块与所述壳体的底壁之间。
  7. 如权利要求6所述的骨传导助听装置，其中，所述配重块包括支撑面，所述支撑面上设有朝向所述压电振子凸出的支撑部，所述支撑部支撑在所述压电振子上，所述配重块的支撑面与所述压电振子之间设有胶粘剂。
  8. 如权利要求7所述的骨传导助听装置，其中，所述配重块的重心在所 述压电振子上的投影落在该配重块的支撑部与所述压电振子的接触面上。
  9. 如权利要求7所述的骨传导助听装置，其中，所述弹性阻尼件包括填充在所述壳体的底部的邵氏硬度shore-00为45-65的硅橡胶，且所述硅橡胶的远离所述壳体的底壁的一端与所述配重块的支撑面平齐。
  10. 如权利要求6所述的骨传导助听装置，其中，所述振动传递元件的第一端设有安装槽，所述压电振子的中部通过胶粘固定至所述安装槽。
  11. 如权利要求1-5中任一项所述的骨传导助听装置，其中，所述壳体采用塑料壳体，或者采用金属镂空弹片制成。
  12. 如权利要求1-5中任一项所述的骨传导助听装置，其中，所述壳体的壁厚为0.3mm-0.5mm。
  13. 如权利要求1-5中任一项所述的骨传导助听装置，其中，所述壳体的顶壁设有固定槽，所述固定槽设置成用于固定所述骨传导助听装置的固定件。
  14. 如权利要求13所述的骨传导助听装置，其中，所述固定槽的槽壁上设有连通所述固定槽与所述壳体的内腔的过线孔。
  15. 如权利要求14所述的骨传导助听装置，其中，所述固定件呈U形，且为空心结构，所述固定件设置成用于夹紧牙齿，与所述压电振动组件连接的导线穿过所述过线孔后伸入所述固定件内，并与固定在所述固定件的另一端的电控部件电连接。
PCT/CN2020/095766 2020-06-12 2020-06-12 一种骨传导助听装置 WO2021248437A1 (zh)

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US17/275,174 US11696080B2 (en) 2020-06-12 2020-06-12 Bone conduction hearing aid device
AU2020309092A AU2020309092B1 (en) 2020-06-12 2020-06-12 Bone conduction hearing aid device
PCT/CN2020/095766 WO2021248437A1 (zh) 2020-06-12 2020-06-12 一种骨传导助听装置
JP2021504537A JP7262846B2 (ja) 2020-06-12 2020-06-12 骨伝導補聴装置

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