JPH06181921A - Sound collection section for stethoscope - Google Patents
Sound collection section for stethoscopeInfo
- Publication number
- JPH06181921A JPH06181921A JP35607792A JP35607792A JPH06181921A JP H06181921 A JPH06181921 A JP H06181921A JP 35607792 A JP35607792 A JP 35607792A JP 35607792 A JP35607792 A JP 35607792A JP H06181921 A JPH06181921 A JP H06181921A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- stethoscope
- microphone
- signal
- bell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、医師等が被検者の体内
音を聴取するときに使用する聴診器の集音部に関し、特
に体内音響を医師等が必要とする信号に変換する信号処
理部を備えた聴診器の集音部に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound collecting portion of a stethoscope used by a doctor or the like to hear body sounds of a subject, and particularly a signal for converting body sound into a signal required by the doctor or the like. The present invention relates to a sound collecting unit of a stethoscope including a processing unit.
【0002】[0002]
【従来の技術】被検者の体内音響は、医師等が被検者の
体に集音部をあてがって聴取している。この場合、集音
した体内音響の音圧レベルが低いうえ、他の様々なノイ
ズが混入して聴診しにくいため、信号処理部で増幅や音
質調整したものをイヤホーン等で聴取するようにしたも
のがある。従来では、この聴診器を使用しないとき、つ
まり集音部を使用していないとき、集音部のマイクロホ
ンの信号回路を開くようにするため、この集音部には機
械的接点で開閉するスイッチや被検者に接触してスイッ
チングする静電センサ等が設けられていた。2. Description of the Related Art Doctors or the like apply the sound collecting section to the body of a subject to hear the body sound of the subject. In this case, the sound pressure level of the collected in-vivo sound is low, and various other noises are mixed in, making it difficult to auscultate. There is. Conventionally, when the stethoscope is not used, that is, when the sound collecting unit is not used, the sound collecting unit has a switch that opens and closes with a mechanical contact in order to open the signal circuit of the microphone. Also, an electrostatic sensor or the like that is brought into contact with the subject and switches is provided.
【0003】[0003]
【発明が解決しようとする課題】聴診器は、診断の最も
基礎的情報を提供する医療機器であり、故障や誤動作は
避けねばならぬものであるが、従来の集音部に設けた機
械的接点を有するスイッチで開閉するものでは、耐候性
に劣ったり保守管理が困難であったし、接点の不良が発
生する危険性があるという問題点があった。A stethoscope is a medical device that provides the most basic information for diagnosis, and failure and malfunction must be avoided. A switch that has a contact has a problem in that it has poor weather resistance and is difficult to maintain and manage, and there is a risk of defective contact.
【0004】また、被検者に接触してスイッチングする
静電センサでは、衣服の上部から集音部をあてがう場合
は、静電容量の変動が不足してしまい、動作しない場合
があるし、被検者の皮膚にあてがった場合、ペースメー
カー等を変調させたり、心電図の採取時には異常波を記
録することがあるという問題があった。Further, in the electrostatic sensor which is brought into contact with the subject and switches, when the sound collecting portion is applied from the upper part of the clothing, the capacitance may not be sufficiently changed, and the electrostatic sensor may not operate. When applied to the skin of the examiner, there are problems that the pacemaker or the like may be modulated or an abnormal wave may be recorded when the electrocardiogram is collected.
【0005】本発明ではかかる従来の問題点を解決する
ためになされたものであって、その目的とするところ
は、集音部に機械的接点を有さず信頼性があり保守管理
が容易で消毒または減菌操作に耐え、また、衣服の上か
ら聴診しても確実に作動し、ペースメーカーや心電図の
採取にも悪影響を与えないようにした聴診器の集音部を
提供することにある。The present invention has been made in order to solve the above-mentioned conventional problems. The purpose of the present invention is that the sound collecting portion has no mechanical contact, is reliable, and is easy to maintain. It is an object of the present invention to provide a sound collecting unit of a stethoscope that is resistant to disinfection or sterilization operation, operates reliably even when auscultated from above clothing, and does not adversely affect pacemaker and electrocardiogram collection.
【0006】[0006]
【課題を解決するための手段】前記目的を達成するため
の手段として、本発明請求項1記載の聴診器の集音部で
は、聴診器の信号処理部で検者の必要とする信号に変換
するため被検者にあてたチェストピースで集音した体内
音響をマイクロホンで電気信号に変換する集音部におい
て、前記マイクロホンの信号回路を開閉する非接触スイ
ッチをチェストピースに備え、かつ該非接触スイッチが
光センサである構成とした。As means for achieving the above object, in the sound collecting unit of the stethoscope according to claim 1 of the present invention, the signal processing unit of the stethoscope converts the signal into a signal required by the examiner. In order to do so, in the sound collection unit for converting the body sound collected by the chest piece applied to the subject into an electric signal by the microphone, the chest piece is provided with a non-contact switch for opening and closing the signal circuit of the microphone, and the non-contact switch Is an optical sensor.
【0007】また、請求項2記載の聴診器の集音部で
は、請求項1記載の聴診器の集音部において、前記非接
触スイッチが検者の指を接触させてのみスイッチングさ
せる位置に設けられたタッチセンサである構成とした。Further, in the sound collecting unit of the stethoscope according to claim 2, in the sound collecting unit of the stethoscope according to claim 1, the non-contact switch is provided at a position where switching is performed only by bringing a finger of an examiner into contact. The touch sensor is configured as described above.
【0008】[0008]
【作用】請求項1記載の聴診器の集音部では、光センサ
をスイッチに使用しているため、集音部に機械的接点を
有さず信頼性が向上する。また、保守管理が容易であ
り、消毒または滅菌操作に耐える共に、衣服の上からで
も確実に聴診可能となる。また、ペースメーカーの作動
や心電図の採取にも悪影響を与えることがない。In the sound collecting unit of the stethoscope according to the first aspect, since the optical sensor is used for the switch, the sound collecting unit has no mechanical contact point and the reliability is improved. In addition, maintenance is easy, and it is possible to endure disinfection or sterilization operations, and to surely perform auscultation even on clothes. In addition, it does not adversely affect the operation of the pacemaker or the electrocardiogram collection.
【0009】請求項2記載の聴診器の集音部では、タッ
チセンサをスイッチに使用しているため、前記同様に集
音部に機械的接点を有さず信頼性が向上する。また、保
守管理が容易である。特に、タッチセンサは被検者の皮
膚にあてて感知させるものではなく、検者の指を接触さ
せて感知させるから、衣服の上からでも確実に聴診可能
となる。また、ペースメーカーの作動や心電図の採取に
も悪影響を与えることがない。In the sound collecting unit of the stethoscope according to the second aspect, since the touch sensor is used as the switch, the sound collecting unit has no mechanical contact like the above and reliability is improved. In addition, maintenance management is easy. In particular, the touch sensor is not intended to be applied to the skin of the subject to be sensed, but to be sensed by touching the examiner's finger, so that auscultation can be surely performed even on clothes. In addition, it does not adversely affect the operation of the pacemaker or the electrocardiogram collection.
【0010】[0010]
【実施例】以下本発明の実施例を図面に基づいて詳細に
説明する。まず、請求項1記載の集音部の実施例を図
1,図2,図3に基づいて説明する。Embodiments of the present invention will now be described in detail with reference to the drawings. First, an embodiment of the sound collecting unit according to claim 1 will be described with reference to FIGS. 1, 2 and 3.
【0011】図において、1は集音部Aのチェストピー
スであって、膜型部2とベル型部3とを備えている。
尚、膜型部2にはダイヤフラムは設けられず開口した構
造となっている。4は軸部であって、中空状のものが膜
型部2とベル型部3との中間に固定されている。図中4
aはボス部、4bは回転止ネジである。In the figure, reference numeral 1 denotes a chest piece of a sound collecting section A, which comprises a film type section 2 and a bell type section 3.
The membrane part 2 is not provided with a diaphragm and has an open structure. Reference numeral 4 denotes a shaft portion, which is hollow and is fixed in the middle of the membrane portion 2 and the bell portion 3. 4 in the figure
a is a boss portion, and 4b is a rotation set screw.
【0012】5は膜型部2に設けられた光センサであっ
て、ステー6によって膜型部2の中央でその先端部に配
置されている。また、7はベル型部3に設けられた光セ
ンサであって、前記同様にステー8によってベル型部3
の中央でその先端部に配置されている。尚、光センサは
ベル型部3内部に設けた遮光筒内部の適宜位置に配置す
るようにしてもよい。前記光センサは、例えばCdSフ
ォトトランジスタ等を使用する。Reference numeral 5 denotes an optical sensor provided in the film mold portion 2, which is arranged by a stay 6 at the center of the film mold portion 2 at the tip thereof. Reference numeral 7 denotes an optical sensor provided in the bell-shaped part 3, and the bell-shaped part 3 is provided by the stay 8 as described above.
It is located at the center of the tip. The optical sensor may be arranged at an appropriate position inside the light shielding cylinder provided inside the bell-shaped portion 3. The photosensor uses, for example, a CdS phototransistor.
【0013】9は膜型部2で集音した体内音響を電気信
号に変換するマイクロホン、10はベル型部3で集音し
た体内音響を電気信号に変換するマイクロホンである。Reference numeral 9 is a microphone for converting the in-vivo sound collected by the film type portion 2 into an electric signal, and 10 is a microphone for converting the in-vivo sound collected by the bell type portion 3 into an electric signal.
【0014】11は光センサの検知量比較回路であっ
て、チェストピース1の使用側の検知と、後述する各音
響処理回路13,14の切換え作動を行う。また、12
は前記光センサの検知量の比較回路11の指示によりマ
イクロホン9,10のいずれかの回路を閉じるスイッチ
ング回路、13はマイクロホン9の膜型音響処理回路で
あって、その特性をダイヤフラムを備えた膜型部で聴き
取る自然音と同様の高調な音響特性に合せられている。
14は、同様にマイクロホン10のベル型音響処理回路
であって、その特性をベル型部で聴き取る自然音と同様
の低調な音響特性に合せられている。15は各処理回路
の出力を音声に変換するイヤホンである。Reference numeral 11 denotes a detection amount comparison circuit of the optical sensor, which performs detection of the use side of the chest piece 1 and switching operation of each of the acoustic processing circuits 13 and 14 described later. Also, 12
Is a switching circuit that closes one of the microphones 9 and 10 in accordance with an instruction from the detection amount comparison circuit 11 of the optical sensor, and 13 is a membrane acoustic processing circuit of the microphone 9, the characteristic of which is a membrane provided with a diaphragm. It has the same harmonic characteristics as the natural sound heard in the mold.
Reference numeral 14 is also a bell-type sound processing circuit of the microphone 10, the characteristics of which are matched to the low-tone sound characteristics similar to the natural sound heard by the bell-shaped portion. Reference numeral 15 is an earphone that converts the output of each processing circuit into voice.
【0015】次に作用を説明する。診断時には両光セン
サ5,7を作動させておき、例えば検者がチェストピー
ス1の膜型部2を被検者の要部に押しあてると、光セン
サ5の受光量が変動するから、光センサの検知量比較回
路11が光センサ5の側の信号をスイッチング回路12
に送る。スイッチング回路12では、この信号を受けて
マイクロホン9の信号回路を閉じると共に膜型音響処理
回路13を作動させ処理させる。膜型音響処理回路13
では、マイクロホン9で採取した体内音響をイコライザ
等でダイヤフラムを備えた膜型部で聴き取る自然音と同
様の高調な音響特性に変調しイヤホン15を駆動させ
る。Next, the operation will be described. Both optical sensors 5 and 7 are activated at the time of diagnosis. For example, when the examiner presses the film-shaped portion 2 of the chest piece 1 against a main portion of the subject, the amount of light received by the optical sensor 5 changes. The detection amount comparison circuit 11 of the sensor switches the signal from the optical sensor 5 side to the switching circuit 12
Send to. In response to this signal, the switching circuit 12 closes the signal circuit of the microphone 9 and activates and processes the membrane acoustic processing circuit 13. Membrane type sound processing circuit 13
Then, the in-vivo sound sampled by the microphone 9 is modulated by an equalizer or the like into a harmonic acoustic characteristic similar to a natural sound to be heard by a film type portion having a diaphragm, and the earphone 15 is driven.
【0016】次に、検者がベル部3を被検者の要部に押
しあてると、前記同様にして光センサ7の受光量が変動
し光センサの検知量比較回路11が光センサ7側の信号
をスイッチング回路12に送り、このスイッチング回路
12が、マイクロホン10側の信号回路を閉じると共に
ベル型音響処理回路14を作動させマイクロホン10で
採取した体内音響をイコライザ等でベル型で聴き取る自
然音と同様の低調な音響特性に変調しイヤホン15を駆
動させる。Next, when the examiner pushes the bell portion 3 against the main part of the subject, the amount of light received by the optical sensor 7 changes in the same manner as described above, and the detection amount comparison circuit 11 of the optical sensor moves to the optical sensor 7 side. Is sent to the switching circuit 12, and the switching circuit 12 closes the signal circuit on the side of the microphone 10 and activates the bell-type sound processing circuit 14 to hear the body sound sampled by the microphone 10 with a bell-type natural sound. The earphone 15 is driven by being modulated into a low-pitched acoustic characteristic similar to sound.
【0017】以上説明してきたように本実施例では、マ
イクロホン9,10の切換えを光センサで行うから集音
部に機械的接点を必要とせず、信頼性が向上すると共に
保守管理が容易となる。また、集音部Aを衣服に押しあ
てることによっても光センサの受光量は変化するため、
衣服の上から使用しても確実に作動させることができ
る。被検者側との間で電気的に絶縁されているため、被
検者側に通電しないからペースメーカーの作動や心電図
の採取にも悪影響を与えることがない。As described above, in this embodiment, since the microphones 9 and 10 are switched by the optical sensor, no mechanical contact point is required for the sound collecting section, the reliability is improved and the maintenance management is facilitated. . In addition, since the amount of light received by the optical sensor also changes when the sound collecting unit A is pressed against clothes,
It can be operated reliably even when used over clothing. Since it is electrically insulated from the subject side, the subject side is not energized, so that it does not adversely affect the operation of the pacemaker or the electrocardiogram collection.
【0018】次に、請求項2記載の集音部の実施例を図
4,図5に基づいて説明する。図において、20は集音
部Bの本体となるチェストピースであって、膜型部21
とベル型部22とを備えている。この膜型部21もダイ
ヤフラムは設けられず開口した構造となっている。前記
膜型部21は、被検者と接触する先端部23が絶縁材で
形成され、被検者と接触しない位置の根元部24が静電
容量検知部(タッチセンサ)として金属で形成され、該
根元部24が絶縁材で形成されたボス部25に螺着26
されている。また、ベル型部22も同様に先端部27が
絶縁材で形成され、被検者と接触しない位置の根元部2
8が静電容量検知部(タッチセンサ)として金属で形成
され、該根元部28が前記ボス部25に螺着29されて
いる。そして、前記膜型部21の根元部24とベル型部
22の根元部28とが静電容量の検知量比較回路30に
接続されている。図中31は膜型部21用のマイクロホ
ン、32はベル型部22用のマイクロホンであり、その
他の構成は前記実施例と同一であるのでその説明は省略
する。Next, an embodiment of the sound collecting unit described in claim 2 will be described with reference to FIGS. 4 and 5. In the figure, 20 is a chest piece that is the main body of the sound collecting unit B, and is a film type unit 21.
And a bell-shaped portion 22. This film-shaped portion 21 also has an open structure without a diaphragm. In the film-shaped portion 21, a tip portion 23 that comes into contact with the subject is formed of an insulating material, and a base portion 24 that does not come into contact with the subject is formed of metal as a capacitance detection portion (touch sensor), The root portion 24 is screwed 26 to a boss portion 25 formed of an insulating material.
Has been done. Similarly, the bell-shaped portion 22 has a tip portion 27 made of an insulating material, and the base portion 2 at a position where it does not come into contact with the subject.
8 is formed of a metal as a capacitance detection portion (touch sensor), and the root portion 28 is screwed 29 to the boss portion 25. The root portion 24 of the film-shaped portion 21 and the root portion 28 of the bell-shaped portion 22 are connected to a capacitance detection amount comparison circuit 30. In the figure, 31 is a microphone for the membrane-shaped portion 21, 32 is a microphone for the bell-shaped portion 22, and the other configurations are the same as those in the above-described embodiment, and therefore the description thereof is omitted.
【0019】この実施例では、検者が膜型部21を被検
者に押しあてながら、その指でベル型部22の根元部2
8に接触すると検知量比較回路30が膜型部21のマイ
クロホン31の信号回路を閉じると共に膜型音響処理回
路13を作動して処理させ体内音響を高調な音響特性に
変調してイヤホン15に出力させる。また、検者がベル
型部22を被検者に押しあてながら、その指で膜型部2
1の根元部24に接触すると検知量比較回路30がベル
型部22のマイクロホン32の信号回路を閉じると共に
ベル型音響処理回路を作動させ体内音響を低調な音響特
性に変調してイヤホン15に出力させる。In this embodiment, while the examiner presses the membrane-shaped portion 21 against the subject, the base portion 2 of the bell-shaped portion 22 is pressed by the finger.
When touching 8, the detection amount comparison circuit 30 closes the signal circuit of the microphone 31 of the film type portion 21 and activates and processes the film type acoustic processing circuit 13 to modulate in-vivo sound into harmonic acoustic characteristics and output to the earphone 15. Let In addition, the examiner presses the bell-shaped portion 22 against the subject while the finger presses the membrane-shaped portion 2.
When contacting the root portion 24 of No. 1, the detection amount comparison circuit 30 closes the signal circuit of the microphone 32 of the bell-shaped portion 22 and activates the bell-shaped acoustic processing circuit to modulate the in-vivo sound into a low acoustic characteristic and output it to the earphone 15. Let
【0020】以上説明してきたように本実施例では、マ
イクロホン31,32の切換えを静電容量検知部(静電
センサ)で行うから集音部に機械的接点を必要とせず、
信頼性が向上すると共に保守管理が容易となる。特に、
静電容量検知部は被検者と接触せず電気的に絶縁されて
いるため、被検者側に通電しないから、ペースメーカー
の作動や心電図の採取にも悪影響を与えることがない。
また、聴診手技において、膜型は主として高調な音を、
ベル型は主として低調な音を聴取する場合に用いる。こ
のとき、形態的な該膜型・ベル型の特徴を温存した集音
部の形態設定を行うことにより、従来使用されていた
(管路式)聴診器の使用に熟達した、または教育を受け
た者にとって、使用用途の簡便性、選択方法にとまどい
が生じにくいので、臨床時に瞬時に即断即決を要する緊
急性にとって有利である。As described above, in the present embodiment, the microphones 31 and 32 are switched by the electrostatic capacitance detection section (electrostatic sensor), so that the sound collection section does not need a mechanical contact.
The reliability is improved and the maintenance is facilitated. In particular,
Since the electrostatic capacitance detection unit does not come into contact with the subject and is electrically insulated, the subject side is not energized, so there is no adverse effect on the operation of the pacemaker or the electrocardiogram collection.
In addition, in auscultatory procedures, the membrane type mainly produces harmonic sounds.
The bell type is mainly used for listening to low-pitched sounds. At this time, by setting the morphology of the sound-collecting section that preserves the morphological features of the membrane type and bell type, it has become proficient in the use of the (pipeline) stethoscope that has been used conventionally, or has received education. This is advantageous for the urgent need to make a quick and prompt decision during clinical use, because it is easy for the person to use and the selection method is not confusing.
【0021】以上、本発明の実施例を説明してきたが、
本発明の具体的な構成はこの実施例に限定されるもので
はなく、発明の要旨を逸脱しない範囲の設計変更等があ
っても本発明に含まれる。The embodiments of the present invention have been described above.
The specific configuration of the present invention is not limited to this embodiment, and the present invention includes a design change and the like within a range not departing from the gist of the invention.
【0022】例えば、実施例では、膜型部とベル型部そ
れぞれにマイクロホンを設けるとしたが、これに限ら
ず、マイクロホンの数は任意であり中央部に1個設けて
もよい。また、集音部形状は任意に設定することができ
る。For example, in the embodiment, the microphone is provided in each of the film-shaped portion and the bell-shaped portion, but the number of microphones is not limited to this, and one microphone may be provided in the central portion. Further, the shape of the sound collecting portion can be set arbitrarily.
【0023】膜型部にダイヤフラムを設けてもよい。ま
た、膜型部やベル型部であってマイクロホンの前面に消
毒対策用として保護膜を設けてもよい。また、ボス部の
端部にガス滅菌用の穴を設けてもよい。A diaphragm may be provided on the film-shaped portion. In addition, a protective film may be provided on the front surface of the microphone, which is a film-shaped portion or a bell-shaped portion, as a measure for disinfection. Further, a hole for gas sterilization may be provided at the end of the boss portion.
【0024】体内音響は任意の音響特性に調整すること
ができる。The body acoustics can be adjusted to arbitrary acoustic characteristics.
【0025】また、マイクロホンで採取した体内音響は
膜型音響とベル型音響に合わせるとしたが、これに限ら
ず、アナログマルチプレクサ、A/D変換装置、イコラ
イザ等のインターフェイス回路、CPU、RAM、RO
M、D/A変換装置等を設けてディジタル変換し、体内
音響に混じって採取される外部雑音を他方のマイクロホ
ンで外部雑音のみを採取して体内音響から外部雑音を除
去するようにしてもよい。この場合、いずれのマイクロ
ホンを体内音響採取用にしても、スイッチング回路は常
に体内音響側の信号を体内音響処理回路側に供給し、外
部雑音の信号を外部雑音処理回路側に供給するようにす
ることができる。Further, the internal sound collected by the microphone is supposed to be the film-type sound and the bell-type sound, but the invention is not limited to this. An analog multiplexer, an A / D converter, an interface circuit such as an equalizer, a CPU, a RAM, and a RO.
An M, D / A converter or the like may be provided to perform digital conversion so that external noise mixed with body sound is collected by the other microphone to remove the external noise from body sound. . In this case, no matter which microphone is used for collecting the internal sound, the switching circuit always supplies the internal sound signal to the internal sound processing circuit side and the external noise signal to the external noise processing circuit side. be able to.
【0026】また、これ等の処理回路には差動アンプを
使用してもよい。A differential amplifier may be used for these processing circuits.
【0027】[0027]
【発明の効果】以上説明してきたように本発明請求項1
記載の聴診器の集音部にあっては、前記構成としたた
め、機械的接点を有さず保守管理が容易であり、衣服の
上からでも確実に聴診可能となる。また、ペースメーカ
ーの作動や心電図の採取にも悪影響を与えることがない
等の効果が得られる。また、請求項2記載の聴診器の集
音部にあっても前記と同様の効果が得られる。As described above, the present invention claims 1.
Since the sound collecting section of the stethoscope described above has the above-mentioned configuration, it has no mechanical contact point, is easy to maintain and manage, and can be surely auscultated even from above clothes. Further, it is possible to obtain an effect that the operation of the pacemaker and the electrocardiogram collection are not adversely affected. Further, even in the sound collecting unit of the stethoscope according to the second aspect, the same effect as the above can be obtained.
【図1】第1実施例の集音部を示す縦断面図である。FIG. 1 is a vertical cross-sectional view showing a sound collecting unit of a first embodiment.
【図2】同上の底面図である。FIG. 2 is a bottom view of the above.
【図3】同上の聴診器を示す説明図である。FIG. 3 is an explanatory view showing the stethoscope of the above.
【図4】第2実施例の集音部を示す縦断面図であるFIG. 4 is a vertical cross-sectional view showing a sound collecting unit according to a second embodiment.
【図5】同上の聴診器を示す説明図である。FIG. 5 is an explanatory diagram showing the stethoscope of the same.
A,B 集音部 1,20 チェストピース 2,21 膜型部 3,22 ベル型部 5 膜型部の光センサ 7 ベル型部の光センサ 9,31 膜型部のマイクロホン 10,32 ベル型部のマイクロホン 24 タッチセンサとしての膜型部の根元部(静電容量
検知部) 28 タッチセンサとしてのベル型部の根元部(静電容
量検知部)A, B Sound collecting part 1,20 Chest piece 2,21 Membrane type part 3,22 Bell type part 5 Optical sensor of film type part 7 Optical sensor of bell type part 9,31 Microphone of film type part 10,32 Bell type Microphone 24 Root part of film type part as touch sensor (capacitance detection part) 28 Root part of bell type as touch sensor (capacitance detection part)
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成5年3月24日[Submission date] March 24, 1993
【手続補正1】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】全図[Correction target item name] All drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図1】 [Figure 1]
【図2】 [Fig. 2]
【図3】 [Figure 3]
【図4】 [Figure 4]
【図5】 [Figure 5]
Claims (2)
信号に変換するため被検者にあてたチェストピースで集
音した体内音響をマイクロホンで電気信号に変換する集
音部において、 前記マイクロホンの信号回路を開閉する非接触スイッチ
をチェストピースに備え、かつ該非接触スイッチが光セ
ンサであることを特徴とする聴診器の集音部。1. A sound collecting unit for converting a body sound collected by a chest piece applied to a subject to a signal required by an examiner in a signal processing unit of a stethoscope into an electric signal by a microphone, A sound collecting unit of a stethoscope, comprising a non-contact switch that opens and closes a signal circuit of the microphone in a chest piece, and the non-contact switch is an optical sensor.
て、前記非接触スイッチが検者の指を接触させてのみス
イッチングさせる位置に設けられたタッチセンサである
ことを特徴とする聴診器の集音部。2. The stethoscope of the stethoscope according to claim 1, wherein the non-contact switch is a touch sensor provided at a position for switching only by touching a finger of an examiner. Sound collection part.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35607792A JPH06181921A (en) | 1992-12-18 | 1992-12-18 | Sound collection section for stethoscope |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35607792A JPH06181921A (en) | 1992-12-18 | 1992-12-18 | Sound collection section for stethoscope |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06181921A true JPH06181921A (en) | 1994-07-05 |
Family
ID=18447216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP35607792A Pending JPH06181921A (en) | 1992-12-18 | 1992-12-18 | Sound collection section for stethoscope |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06181921A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001149369A (en) * | 1999-11-25 | 2001-06-05 | Tesshokai | Stethoscope |
US6438238B1 (en) * | 2000-07-14 | 2002-08-20 | Thomas F. Callahan | Stethoscope |
JP2010522039A (en) * | 2007-03-23 | 2010-07-01 | スリーエム イノベイティブ プロパティズ カンパニー | Power management for medical sensing devices using feature detection of multiple sensor signals |
JP2012179408A (en) * | 2004-12-30 | 2012-09-20 | Three M Innovative Properties Co | Stethoscope with frictional noise reduction |
-
1992
- 1992-12-18 JP JP35607792A patent/JPH06181921A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001149369A (en) * | 1999-11-25 | 2001-06-05 | Tesshokai | Stethoscope |
US6438238B1 (en) * | 2000-07-14 | 2002-08-20 | Thomas F. Callahan | Stethoscope |
JP2012179408A (en) * | 2004-12-30 | 2012-09-20 | Three M Innovative Properties Co | Stethoscope with frictional noise reduction |
JP2010522039A (en) * | 2007-03-23 | 2010-07-01 | スリーエム イノベイティブ プロパティズ カンパニー | Power management for medical sensing devices using feature detection of multiple sensor signals |
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