JP2011087142A - Stick type bone conduction hearing aid - Google Patents
Stick type bone conduction hearing aid Download PDFInfo
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- JP2011087142A JP2011087142A JP2009238778A JP2009238778A JP2011087142A JP 2011087142 A JP2011087142 A JP 2011087142A JP 2009238778 A JP2009238778 A JP 2009238778A JP 2009238778 A JP2009238778 A JP 2009238778A JP 2011087142 A JP2011087142 A JP 2011087142A
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本発明は、骨伝導補聴器に関し、特に無理なく長時間使用することが可能な貼付型骨伝導補聴器に関する。 The present invention relates to a bone conduction hearing aid, and more particularly to an adhesive bone conduction hearing aid that can be used for a long time without difficulty.
補聴器は、気導補聴器がよく知られているが、今日では骨伝導補聴器も多く販売されている。骨伝導補聴器は、骨伝導振動子を頭や耳の後ろの骨に直接接触させ、骨伝導振動子から発せられる振動を聴覚神経に伝達する補聴器であり、骨伝導振動子を眼鏡のフレームに取付けたもの、ヘアバンド状の圧着具の両端部に骨伝導振動子を設けたものが販売されている。難聴者向け骨伝導補聴器は、挿耳形、耳掛形、箱形補聴器といった気導補聴器のように本体、又はイヤホンなどを外耳道に挿入せずに装用できるため装用違和感が無い。 As a hearing aid, an air conduction hearing aid is well known, but today many bone conduction hearing aids are also sold. A bone conduction hearing aid is a hearing aid that directly contacts a bone conduction transducer with the bone behind the head or ear and transmits the vibrations emitted from the bone conduction transducer to the auditory nerve. The one with the bone conduction vibrator provided at both ends of the hair band-shaped crimping tool is on the market. Bone conduction hearing aids for the hearing impaired can be worn without inserting the main body, earphones, or the like into the ear canal, like air conduction hearing aids such as in-ear, ear-hook, and box-type hearing aids.
ヘアバンド状の圧着具に骨伝導振動子を取付けた骨伝導補聴器は、補聴器を装用していることが周りの人に容易に分かるので改善が望まれている。これに対しては、骨伝導振動子を備えた補聴駆動部を頭蓋骨に埋め込む補聴器が提案されている（例えば特許文献１参照）。また、骨伝導スピーカを上顎義歯と同様の形状の保形材に埋設し、これを上顎に密着固定し使用する無線タイプの骨伝導補聴器もある（例えば特許文献２参照）。さらに外耳道内に振動伝達部を挿入して使用する骨伝導補聴器も提案されている（例えば特許文献３参照）。 The bone conduction hearing aid in which the bone conduction vibrator is attached to the hair band-shaped crimping tool is easily improved by the surrounding people because it is easily known that the hearing aid is being worn. In response to this, a hearing aid in which a hearing aid driving unit including a bone conduction vibrator is embedded in a skull has been proposed (see, for example, Patent Document 1). There is also a wireless bone conduction hearing aid in which a bone conduction speaker is embedded in a shape-retaining material having the same shape as the upper denture, and this is closely fixed to the upper jaw (see, for example, Patent Document 2). Furthermore, a bone conduction hearing aid has been proposed in which a vibration transmitter is inserted into the ear canal (see, for example, Patent Document 3).
骨伝導補聴器に関しては、装用していることが簡単に分ると言う問題の他、ヘアバンド状の圧着具を使用する骨伝導補聴器の場合、装用しているときに骨伝導振動子の位置がずれてしまいうまく聞こえない、又は骨伝導振動子を圧着して使用しているため装用部に痛みや不快を感じ、長時間の装用が困難であるとの問題が指摘されている。これに対しては、上記特許文献１又は特許文献２に記載の方法により解決することも可能かと思われるが、特許文献１の方法では、手術が必要となり、簡単に実施できるものではない。また特許文献２の方法も上顎に密着させる必要があることから、使用中、違和感がある。これらのことから長時間装用しても違和感を生じさせず、楽に装用できる骨伝導補聴器の開発が待たれている。またこれら骨伝導補聴器が、装用していることが分りにくい補聴器であればより好ましい。 Regarding bone conduction hearing aids, in addition to the problem that it is easy to know that they are wearing, in the case of bone conduction hearing aids that use hair band-shaped crimping tools, the position of the bone conduction vibrator is not It has been pointed out that there is a problem that it is difficult to hear for a long time because it slips and does not sound well or feels pain and discomfort in the wearing part because the bone conduction vibrator is crimped. It can be considered that this can be solved by the method described in Patent Document 1 or Patent Document 2, but the method of Patent Document 1 requires surgery and cannot be easily performed. Moreover, since the method of Patent Document 2 also needs to be brought into close contact with the upper jaw, it is uncomfortable during use. For these reasons, development of a bone conduction hearing aid that can be worn comfortably without causing a sense of incongruity even if worn for a long time is awaited. Moreover, it is more preferable if these bone conduction hearing aids are hearing aids that are difficult to understand.
本発明の目的は、簡単な構成で無理なく長時間使用することが可能な骨伝導補聴器を提供することである。さらに装用していることが分りにくい骨伝導補聴器の提供を目的とする。 An object of the present invention is to provide a bone conduction hearing aid that can be used for a long time without difficulty with a simple configuration. It is another object of the present invention to provide a bone conduction hearing aid that is difficult to understand.
本発明は、骨伝導振動子を粘着シート又は粘着材により頭部に貼付、固定し装用することを特徴とする貼付型骨伝導補聴器である。 The present invention is an adhesive bone conduction hearing aid characterized in that a bone conduction vibrator is affixed and fixed to the head with an adhesive sheet or adhesive.
また本発明は、前記貼付型骨伝導補聴器において、前記骨伝導振動子は、マイクロホン、バッテリ及び音声信号処理回路を含む補聴器本体と分離していることを特徴とする。 Further, the present invention is characterized in that in the sticking type bone conduction hearing aid, the bone conduction vibrator is separated from a hearing aid body including a microphone, a battery, and an audio signal processing circuit.
また本発明は、前記貼付型骨伝導補聴器において、前記粘着シートは、透湿性を有し、前記粘着シートの粘着剤は、長時間使用しても接触性皮膚障害を生じさせない粘着剤からなることを特徴とする。 Further, the present invention provides the adhesive bone conduction hearing aid, wherein the pressure-sensitive adhesive sheet has moisture permeability, and the pressure-sensitive adhesive of the pressure-sensitive adhesive sheet is made of a pressure-sensitive adhesive that does not cause contact skin damage even when used for a long time. It is characterized by.
また本発明は、前記貼付型骨伝導補聴器において、前記頭部が、耳介下部乳様突起部又はその近傍であることを特徴とする。 In the adhesive bone conduction hearing aid according to the present invention, the head is the lower auricular mastoid or the vicinity thereof.
本発明に係る貼付型骨伝導補聴器は、骨伝導振動子を粘着シート又は粘着材により頭部に貼付、固定し装用するので、骨伝導振動子が頭部に無理に押し付けられることがなく無理なく長時間装用することができる。骨伝導振動子を粘着シート又は粘着材により頭部に貼付、固定し装用するので、装用中に骨伝導振動子の位置がずれにくく安定して使用することができる。構成も簡単であり、手術の必要もなく誰でも簡単に使用することができる。 The adhesive bone conduction hearing aid according to the present invention attaches, fixes, and wears the bone conduction vibrator to the head with an adhesive sheet or adhesive material, so that the bone conduction vibrator is not forced against the head without difficulty. Can be worn for a long time. Since the bone conduction vibrator is affixed and fixed to the head with an adhesive sheet or an adhesive material, the bone conduction vibrator can be used stably without being misaligned during wearing. The construction is also simple and anyone can use it easily without the need for surgery.
また本発明によれば、骨伝導振動子は補聴器本体と分離しているので骨伝導振動子を小型薄型軽量化することができる。これにより粘着シート又は粘着材による骨伝導振動子の固定が容易となり、落下を防止し、装用中のずれもより少なくすることができる。さらに装用していることが分りにくい。 Further, according to the present invention, since the bone conduction vibrator is separated from the hearing aid main body, the bone conduction vibrator can be reduced in size and thickness. As a result, the bone conduction vibrator can be easily fixed by the pressure-sensitive adhesive sheet or the pressure-sensitive adhesive material, can be prevented from falling, and can be less displaced during wearing. Furthermore, it is difficult to understand that they are wearing.
また本発明によれば、粘着シートは、透湿性を有し、粘着剤は、長時間使用しても接触性皮膚障害を生じさせない粘着剤からなるので、安心して長時間装用することができる。 Further, according to the present invention, the pressure-sensitive adhesive sheet has moisture permeability, and the pressure-sensitive adhesive is made of a pressure-sensitive adhesive that does not cause contact skin damage even when used for a long time.
また、骨伝導振動子を耳介下部乳様突起部又はその近傍に貼付することで装用していることが目立たない。粘着シートで骨伝導振動子を覆うように貼付すれば装用していることがより分りにくくなる。 Moreover, it is not conspicuous that the bone conduction vibrator is worn by being attached to or near the lower auricular milky protrusion. If it is pasted so as to cover the bone conduction vibrator with an adhesive sheet, it becomes more difficult to understand that it is worn.
図１は、本発明の第１実施形態としての貼付型骨伝導補聴器１の概略的構成を示す図である。図２は、貼付型骨伝導補聴器１の装用例を示す図である。 FIG. 1 is a diagram showing a schematic configuration of a sticking type bone conduction hearing aid 1 as a first embodiment of the present invention. FIG. 2 is a diagram showing a wearing example of the adhesive bone conduction hearing aid 1.
貼付型骨伝導補聴器１は、小型薄型の骨伝導振動子３と、骨伝導振動子３と分離しケーブル７を介して骨伝導振動子３と接続する補聴器本体５と、骨伝導振動子３を頭部５０に貼付する粘着シート９を含み、骨伝導振動子３を粘着シート９を用いて耳介下部乳様突起部などに直接、貼付、固定し装用する骨伝導補聴器である。以下、骨伝導振動子３を粘着シート９を用いて耳介下部乳様突起部に直接、貼付、固定し装用する場合を例として説明する。 The adhesive bone conduction hearing aid 1 includes a small and thin bone conduction vibrator 3, a hearing aid body 5 that is separated from the bone conduction vibrator 3 and connected to the bone conduction vibrator 3 via a cable 7, and the bone conduction vibrator 3. The bone conduction hearing aid includes an adhesive sheet 9 to be affixed to the head 50, and the bone conduction vibrator 3 is directly affixed, fixed and worn on the lower auricular milky protrusion using the adhesive sheet 9. Hereinafter, the case where the bone conduction vibrator 3 is directly affixed, fixed and worn on the lower auricular milky protrusion using the adhesive sheet 9 will be described as an example.
骨伝導振動子３は、小型で薄型の略円板状の筐体１１内に補聴器本体５からの音声信号を受けて振動する薄型で振動効率に優れる振動素子１３が収納され、筐体１１の一面には、振動素子１３の発する振動を被装用者に伝達するための振動板１５が設けられている。この振動板１５が振動面となり、この振動面を被装用者の耳介下部乳様突起部に直接、当接させ、筐体１１の上から粘着シート９で固定する。振動素子１３は、公知の電磁誘導素子、圧電素子、超磁歪素子など公知の振動素子からなる。筐体１１の振動板１５と対向する面には、ケーブル７を接続するための接続端子１７が取付けられている。骨伝導振動子３の形状を球の一部を切り取った腕を伏せたような形状とすると、粘着シート９で骨伝導振動子３を覆うように貼付するとき貼付しやすく、装用していることが目立ちにくい。 In the bone conduction vibrator 3, a thin vibration element 13 that vibrates in response to an audio signal from the hearing aid body 5 is housed in a small and thin substantially disk-shaped housing 11. On one surface, a vibration plate 15 for transmitting vibration generated by the vibration element 13 to the wearer is provided. The vibration plate 15 becomes a vibration surface, and the vibration surface is brought into direct contact with the lower auricle milky protrusion of the wearer and fixed with the adhesive sheet 9 from the top of the housing 11. The vibration element 13 is a known vibration element such as a known electromagnetic induction element, piezoelectric element, or giant magnetostrictive element. A connection terminal 17 for connecting the cable 7 is attached to the surface of the housing 11 facing the diaphragm 15. If the shape of the bone conduction vibrator 3 is such that the arm from which a part of the sphere is cut is turned down, the bone conduction vibrator 3 is easily worn and worn when the bone conduction vibrator 3 is covered with the adhesive sheet 9. Is inconspicuous.
補聴器本体５は、筐体内にマイクロホン、マイクロホンからの音声信号を増幅する増幅回路などを含む音声信号処理回路及びこれらに電源を供給するバッテリが収納され、ケーブル７を介して音声信号を骨伝導振動子３に送る。骨伝導振動子３と補聴器本体５とを分離することで、骨伝導振動子３の小型、薄型、軽量化が容易となり、これにより装用時、骨伝導振動子３が落下せず、ずれにくくなる。また骨伝導振動子３が軽いので装用中も楽である。さらに装用していることが分りにくい。なお、骨伝導振動子３の筐体１１内に信号受信回路を、補聴器本体５に信号送信回路を設け、骨伝導振動子３と補聴器本体５とを無線通信可能に接続してもよい。 The hearing aid main body 5 contains a microphone, an audio signal processing circuit including an amplifier circuit for amplifying an audio signal from the microphone, and a battery for supplying power to these components. Send to child 3. By separating the bone conduction vibrator 3 and the hearing aid main body 5, the bone conduction vibrator 3 can be easily reduced in size, thickness, and weight, so that the bone conduction vibrator 3 does not fall when worn and is not easily displaced. . Further, since the bone conduction vibrator 3 is light, it is easy to wear it. Furthermore, it is difficult to understand that they are wearing. Note that a signal receiving circuit may be provided in the housing 11 of the bone conduction vibrator 3 and a signal transmission circuit may be provided in the hearing aid main body 5 so that the bone conduction vibrator 3 and the hearing aid main body 5 may be connected so as to be capable of wireless communication.
粘着シート９は、筐体１１に取付けられた接続端子１７を除き骨伝導振動子３全体を覆い、骨伝導振動子３を耳介下部乳様突起部にしっかりと貼付け可能な大きさ、粘着性を備え、皮膚に対して十分な接着強度を有しながらも貼る・剥すことが容易な粘着シートである。粘着シート９は、透湿性を備え、長時間貼付しても皮膚のかぶれ、発赤を生じさせない又はこれらを生じさせにくい基材及び粘着剤からなる。このような粘着シート９として、医療用の粘着シートが例示される。骨伝導振動子３は、粘着シート９で上から全体を覆うように貼付する他、骨伝導振動子３の振動面に両面テープ状の粘着シートを貼付し又は粘着剤を塗布し、これらを介して骨伝導振動子３を貼付してもよい。なお、本実施形態では、接続端子１７を粘着シート９で覆っていないけれども、接続端子１７を含む骨伝導振動子３全体を粘着シート９で覆うように貼付してもよい。 The pressure-sensitive adhesive sheet 9 covers the entire bone conduction vibrator 3 except for the connection terminal 17 attached to the housing 11, and has a size and adhesiveness capable of firmly sticking the bone conduction vibrator 3 to the lower auricular milky protrusion. It is a pressure-sensitive adhesive sheet that can be easily applied and peeled while having sufficient adhesive strength to the skin. The pressure-sensitive adhesive sheet 9 is made of a base material and a pressure-sensitive adhesive that have moisture permeability and do not cause skin irritation or redness even when applied for a long time. As such an adhesive sheet 9, a medical adhesive sheet is exemplified. The bone conduction vibrator 3 is affixed so as to cover the whole from above with the adhesive sheet 9, or a double-sided tape-like adhesive sheet is applied to the vibration surface of the bone conduction vibrator 3 or an adhesive is applied thereto, Alternatively, the bone conduction vibrator 3 may be attached. In the present embodiment, although the connection terminal 17 is not covered with the adhesive sheet 9, the entire bone conduction vibrator 3 including the connection terminal 17 may be attached so as to be covered with the adhesive sheet 9.
上記実施形態では、耳介下部乳様突起部に骨伝導振動子３を貼付、固定し装用する例を示したが、骨伝導振動子３を貼付する位置は、頭蓋骨に直接振動を伝達できる位置であればよく、後述の実施例に示すように側頭骨下顎窩骨部などであってもよい。補聴器を装用していることが分りにくい点からは、耳介下部乳様突起部が好ましい。 In the above-described embodiment, an example in which the bone conduction vibrator 3 is attached to the lower auricular mastoid protrusion, fixed, and worn is shown. However, the position where the bone conduction vibrator 3 is attached is a position where vibration can be transmitted directly to the skull. As long as it is, it may be a temporal mandibular fossa part as shown in the examples described later. From the viewpoint that it is difficult to understand that the hearing aid is worn, the lower auricular milky protrusion is preferable.
骨伝導振動子３を粘着シート９で耳介下部乳様突起部などの頭部に直接、貼付、固定し装用する骨伝導補聴器は、従来のヘアバンド状の圧着具で骨伝導振動子を頭部に圧着させる方法に比較し、頭部への圧着力が小さく振動伝達力の低下が懸念されるため、下記要領で実験を行い、粘着シート９で骨伝導振動子３を貼付、固定する方法でも十分に音が聞こえることを確認した。 A bone conduction hearing aid in which the bone conduction vibrator 3 is directly attached to, fixed to, and attached to the head of the lower auricular milky protrusion or the like with an adhesive sheet 9 is a conventional hair band-shaped crimping tool. Compared with the method of crimping to the part, since the crimping force to the head is small and there is a concern about the decrease in vibration transmission force, the experiment is performed as follows, and the bone conduction vibrator 3 is stuck and fixed with the adhesive sheet 9 But I confirmed that I could hear enough sound.
実験要領は次の通りである。
音圧が既知の気導からの音（気導音）と音圧未知の骨伝導振動子からの音（試験音）を被験者が等しいと感じる時の気導音の音圧を測定することにより、試験音が人によってどの程度の音圧と感じられるかを知ることができる。骨伝導振動子が振動することにより発生する音漏れが、被験者の外耳道を経て気導音として聞こえないようにするために、耳栓を装着する。そのため、試験開始前に被験者が耳栓を装着した状態での気導聴力を測定し、耳栓による既知音の減衰量を考慮する。
The experimental procedure is as follows.
By measuring the sound pressure of the air conduction sound when the subject feels that the sound from the air conduction with known sound pressure (air conduction sound) and the sound from the bone conduction vibrator with unknown sound pressure (test sound) are equal , It is possible to know how much the test sound is perceived by a person. In order to prevent sound leakage caused by the vibration of the bone conduction vibrator from being heard as an air conduction sound through the ear canal of the subject, an earplug is attached. Therefore, before the start of the test, the subject's air conduction hearing ability is measured with the earplugs on, and the attenuation of the known sound due to the earplugs is taken into account.
図３は、実験要領を示す模式図である。骨伝導振動子３は両面テープで、被験者１００の前額正中部、耳介下部乳様突起部、側頭骨下顎窩骨部に貼付した。図３は、骨伝導振動子３を前額正中部に貼付したケースである。補聴器本体５は、６０ｄＢの鈍音を出力するスピーカ１０１と共に防音箱１０３に入れ、ケーブル７を介して骨伝導振動子３と接続した。被験者１００は、耳栓１０７を装着した後、ヘッドホン１０９を装着し、ヘッドホン１０９には聴力検査機器１１１から鈍音を出力した。被験者１００は骨伝導振動子３とヘッドホン１０９から交互に出力される鈍音を聞き、聴力検査機器１１１の音圧調整ダイアル１１３を回し、両方からの出力音が同じになるように調節した。同じとなったところの音圧を読み取った（ダイアルの数値）。比較のため、ヘアバンド状の圧着具で骨伝導振動子を圧着するタイプの骨伝導補聴器でも実験を行った。以下、骨伝導振動子３は両面テープで貼付、固定したときの実験結果を示すが、図２に示すように骨伝導振動子３全体を粘着シート９で覆うように貼付、固定してもほぼ同じ結果になることは確認済みである。 FIG. 3 is a schematic diagram showing the experimental procedure. The bone conduction vibrator 3 was a double-sided tape and was affixed to the forehead midline, the lower auricular mastoid, and the temporal mandibular fossa of the subject 100. FIG. 3 shows a case where the bone conduction vibrator 3 is affixed to the midline portion of the forehead. The hearing aid main body 5 was placed in a soundproof box 103 together with a speaker 101 that outputs a dull sound of 60 dB, and connected to the bone conduction vibrator 3 via a cable 7. The subject 100 puts on the earplug 107 and then puts on the headphones 109, and outputs a dull sound from the hearing test device 111 to the headphones 109. The subject 100 listened to the blunt sound alternately output from the bone conduction vibrator 3 and the headphone 109, and turned the sound pressure adjustment dial 113 of the hearing test device 111 to adjust the output sound from both to be the same. The sound pressure at the same place was read (diagram number). For comparison, an experiment was also conducted using a bone conduction hearing aid of the type in which a bone conduction vibrator is crimped with a hair band-shaped crimping tool. Hereinafter, the experimental results when the bone conduction vibrator 3 is stuck and fixed with the double-sided tape will be shown. However, even if the bone conduction vibrator 3 is entirely covered and covered with the adhesive sheet 9 as shown in FIG. It has been confirmed that the same result is obtained.
骨伝導振動子３から出力されている音を被験者１００がＸ（ｄＢ）と知覚すると仮定する。そのときの聴力検査機器１１１の音圧調整ダイアル１１３の数値をｎ（ｄＢ）、耳栓１０７をした状態での骨伝導閾値をＢ（ｄＢ）、気導閾値をＡ（ｄＢ）とすると、Ｘ（ｄＢ）は、式（１）で表現できる。
Ｘ＝ｎ＋Ｂ−Ａ・・・（１）
It is assumed that the subject 100 perceives the sound output from the bone conduction vibrator 3 as X (dB). If the numerical value of the sound pressure adjustment dial 113 of the hearing test device 111 at that time is n (dB), the bone conduction threshold value with the earplug 107 in the state is B (dB), and the air conduction threshold value is A (dB), X (DB) can be expressed by equation (1).
X = n + B−A (1)
実験結果を表１及び表２に示した。表１は、骨伝導振動子３の貼付位置と被験者１００が知覚した音圧との関係を示す。このときの入力音圧は６０ｄＢ、周波数は１ＫＨｚであった。この結果から骨伝導振動子３の貼付位置としては、耳介下部乳様突起部または、側頭骨下顎窩骨部が好ましいと言える。
表２は、入力周波数と被験者１００が知覚した音圧との関係を示す。このときの入力音圧は６０ｄＢ、骨伝導振動子３の貼付位置は耳介下部乳様突起部である。この結果から、０．５ＫＨｚは１ＫＨｚ以上に比べ知覚できる音圧が若干低かった。この傾向は、圧着による装用方法と同様である。 Table 2 shows the relationship between the input frequency and the sound pressure perceived by the subject 100. At this time, the input sound pressure is 60 dB, and the application position of the bone conduction vibrator 3 is the lower auricular milky protrusion. From this result, the sound pressure perceivable at 0.5 KHz was slightly lower than that at 1 KHz or higher. This tendency is the same as the wearing method by pressure bonding.
貼付型と圧着具を使用する圧着型とを比較し、１ＫＨｚ以上では知覚される音圧に差はない。
１ 貼付型骨伝導補聴器
３ 骨伝導振動子
５ 補聴器本体
９ 粘着シート
５０ 頭部
DESCRIPTION OF SYMBOLS 1 Sticking type bone conduction hearing aid 3 Bone conduction vibrator 5 Hearing aid main body 9 Adhesive sheet 50 Head
Claims (4)
前記粘着シートの粘着剤は、長時間使用しても接触性皮膚障害を生じさせない粘着剤からなることを特徴とする請求項１又は２に記載の貼付型骨伝導補聴器。 The pressure-sensitive adhesive sheet has moisture permeability,
The adhesive bone conduction hearing aid according to claim 1 or 2, wherein the pressure-sensitive adhesive of the pressure-sensitive adhesive sheet comprises a pressure-sensitive adhesive that does not cause contact skin damage even when used for a long time.
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| JP2009238778A JP2011087142A (en) | 2009-10-15 | 2009-10-15 | Stick type bone conduction hearing aid |
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| JP2009238778A JP2011087142A (en) | 2009-10-15 | 2009-10-15 | Stick type bone conduction hearing aid |
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