JPH07155311A - Probe for pulse oximeter - Google Patents
Probe for pulse oximeterInfo
- Publication number
- JPH07155311A JPH07155311A JP5306280A JP30628093A JPH07155311A JP H07155311 A JPH07155311 A JP H07155311A JP 5306280 A JP5306280 A JP 5306280A JP 30628093 A JP30628093 A JP 30628093A JP H07155311 A JPH07155311 A JP H07155311A
- Authority
- JP
- Japan
- Prior art keywords
- probe
- light
- light receiving
- ear
- light emitting
- 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.)
- Granted
Links
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、生体における互いに異
なる波長の吸光特性の差を利用して被験者の動脈血の酸
素飽和度を非観血的に連続測定するために用いるパルス
オキシメータ用プローブに関し、特に耳に装着して酸素
飽和度を測定するためのパルスオキシメータ用プローブ
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulse oximeter probe used for non-invasive continuous measurement of oxygen saturation of arterial blood of a subject by utilizing differences in absorption characteristics of different wavelengths in a living body. In particular, it relates to a probe for a pulse oximeter that is worn on the ear to measure oxygen saturation.
【０００２】[0002]
【従来の技術】無侵襲に動脈血の酸素飽和度を測定する
には、従来からパルスオキシメータが用いられている。
このパルスオキシメータでは、酸化ヘモグロビンと還元
ヘモグロビンとで異なる光透過性を有する２つ以上の波
長の光（一般に赤色光と赤外光を用いる）を人の指先や
耳たぶなどに時分割に照射し、生体を透過あるいは反射
してきた光を受光して、動脈血の脈動に伴って現れる２
つの波長の脈動変動分の比から酸素飽和度を求めてい
る。このパルスオキシメータでは、一般に被験者に装着
されるプローブ内に赤色光と赤外光を発する２つの発光
素子と１つの受光素子とが内蔵されている。このような
プローブとしては、従来から装着部位によって構造の異
なる各種のものが提案されており、図１０および図１１
には、被験者の耳たぶに装着して測定を行なう従来のク
リップ式のプローブが示されている。これらの図で、一
対の挟持部材４０，４１の一端側基部は、軸４２によっ
て回動可能に連結されており、軸側に取り付けられた図
示しない板ばねによって挟持部材４０，４１は、互いに
測定部位を挟みつける方向に回動付勢されている。これ
ら挟持部材４０，４１の内面部には、それぞれ発光素子
４３と受光素子４４が対向して内蔵されており、一対の
挟持部材４０，４１によって耳たぶ５をクリップしてプ
ローブを装着した状態では、耳たぶ５を透過した発光素
子４３からの光を受光素子４５側で検出できるようにな
っている。2. Description of the Related Art A pulse oximeter has been conventionally used to non-invasively measure oxygen saturation of arterial blood.
This pulse oximeter irradiates a human fingertip or earlobe with two or more wavelengths of light (generally using red light and infrared light), which have different optical transmissivities for oxyhemoglobin and deoxyhemoglobin, in a time-division manner. , Receives the light transmitted or reflected by the living body and appears with the pulsation of arterial blood 2
The oxygen saturation is calculated from the ratio of the pulsation fluctuations of the two wavelengths. In this pulse oximeter, two light-emitting elements that emit red light and infrared light and one light-receiving element are generally incorporated in a probe that is attached to a subject. As such a probe, various types of probes having different structures depending on the mounting site have been conventionally proposed.
Shows a conventional clip-type probe that is attached to a subject's earlobe to perform measurement. In these figures, one end side bases of the pair of sandwiching members 40 and 41 are rotatably connected by a shaft 42, and the sandwiching members 40 and 41 measure each other by a plate spring (not shown) attached to the shaft side. It is urged to rotate in the direction of sandwiching the part. A light emitting element 43 and a light receiving element 44 are built in the inner surface portions of the holding members 40 and 41 so as to face each other, and in a state where the earlobe 5 is clipped by the pair of holding members 40 and 41 and the probe is attached, The light from the light emitting element 43 that has passed through the ear lobe 5 can be detected on the light receiving element 45 side.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の耳たぶ
クリップ式のプローブでは、測定部位の耳たぶ５を挟み
付ける一対の挟持部材４０，４１のそれぞれに発光素子
４３と受光素子４４を内蔵する構成となっているので、
測定中に生じた体動によりプローブが揺れると、板ばね
に抗して一対の挟持部材４０，４１が変位して微妙に閉
じたり開いたりして、発光素子４３と受光素子４４との
間隔が変動するようになる。このため、測定部位の生体
組織に動脈流による脈動変動分以外の成分の変動が生じ
て、酸素飽和度の測定に誤差が混入するようになる。In the conventional earlobe clip type probe described above, a light emitting element 43 and a light receiving element 44 are built in each of a pair of holding members 40, 41 for holding the earlobe 5 at the measurement site. Since it has become
When the probe shakes due to the body motion generated during the measurement, the pair of holding members 40 and 41 are displaced against the leaf spring to close or open subtly, so that the distance between the light emitting element 43 and the light receiving element 44 becomes small. It will change. Therefore, fluctuations in components other than the pulsation fluctuation due to arterial flow occur in the living tissue at the measurement site, and errors occur in the measurement of oxygen saturation.
【０００４】本発明は、このような従来の技術が有する
課題を解決するために提案されたものであり、耳に装着
して酸素飽和度を測定する際に体動が生じても発光素子
と受光素子との距離が変動することがなく、高い精度で
測定が行なえるパルスオキシメータ用プローブを提供す
ることを目的とする。The present invention has been proposed in order to solve the problems of the prior art as described above, and it can be used as a light emitting element even when a body movement occurs when it is worn on the ear and oxygen saturation is measured. An object of the present invention is to provide a pulse oximeter probe that can perform measurement with high accuracy without changing the distance from the light receiving element.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するため
に本発明は、被験者の耳に装着され、互いに波長の異な
る光を生体に照射して波長による吸光特性の違いから血
液中の酸素飽和度を測定するために用いるパルスオキシ
メータ用プローブにおいて、耳介を背後から挟み込む挟
持部材を、ばね部材で閉方向に弾発付勢してプローブ本
体の基部に開閉可能に取り付け、この挟持部材に面する
プローブ本体の腹部を膨出させ、プローブ本体の先端部
に耳の耳甲介腔と珠間切痕に嵌まり込む嵌着部を突設し
て、上記プローブ本体の腹部の膨出部とこの嵌着部とで
耳の対珠を挟み込むようにし、上記プローブ本体の膨出
部と嵌着部との対向する面部に、互いに光を授受する発
光素子と受光素子とを投光窓部と受光窓部を介してそれ
ぞれ取り付けた構成としてある。In order to achieve this object, the present invention is designed to be worn on the ear of a subject and to irradiate a living body with light having different wavelengths, thereby saturating oxygen in blood due to the difference in absorption characteristics depending on the wavelength. In the pulse oximeter probe used to measure the degree, a pinching member that pinches the auricle from behind is elastically urged in the closing direction by a spring member and attached to the base of the probe body so that it can be opened and closed. Swelling the abdomen of the probe body facing, protruding from the tip of the probe body a fitting portion that fits into the concha cavity of the ear and the intertragus notch, and the bulging portion of the abdomen of the probe body. The interlace of the ear is sandwiched between the fitting portion and the light emitting element and the light receiving element for transmitting and receiving light to and from each other on the surface portion of the probe body facing the bulging portion and the fitting portion. Structures attached through the light receiving window There as.
【０００６】また、本発明では、上記嵌着部に音の通り
を確保するための通音孔を穿設した構成としてある。Further, according to the present invention, a sound passage hole is formed in the fitting portion to secure the passage of sound.
【０００７】また、本発明では、装着性を高めるととも
に、遮光性を有する材質で形成されたカバーを、上記投
光窓部と受光窓部を除く上記プローブ本体の腹部と嵌着
部にこれらの部位を一体に覆うように被せた構成として
ある。Further, in the present invention, a cover formed of a material having a light-shielding property as well as improved wearability is provided on the abdomen and the fitting portion of the probe body excluding the light projecting window and the light receiving window. It is configured to cover the parts integrally.
【０００８】[0008]
【作用】上述した構成によれば、プローブ本体に発光素
子部と受光素子部を設けて、これら発光素子部と受光素
子部の間に耳の対珠を挟み込んで酸素飽和度を測定する
ようにしたので、プローブが体動で揺れても、発光素子
部と受光素子部間の距離が変動しないとともに、膨出部
と嵌着部に挟み込まれた対珠は、図９に示すように挟持
部材の先端部で耳介背後から押さえ込まれるため、三点
支持となり動きが生じにくく、酸素飽和度を精度よく測
定できる。According to the above structure, the probe main body is provided with the light emitting element section and the light receiving element section, and the interlaced ear is sandwiched between the light emitting element section and the light receiving element section to measure the oxygen saturation. Therefore, even if the probe shakes due to body movement, the distance between the light emitting element portion and the light receiving element portion does not change, and the tragus sandwiched between the bulging portion and the fitting portion has a holding member as shown in FIG. Since it is pressed from behind the auricle by the tip of the ear, it becomes a three-point support, and movement is unlikely to occur, and oxygen saturation can be measured accurately.
【０００９】また、耳の珠間切痕に嵌まり込む嵌着部に
通音孔を穿設したので、耳にプローブを装着したときに
音の通りを阻害しない。Since the sound passage hole is formed in the fitting portion that fits into the intertraumatic notch of the ear, the sound passage is not obstructed when the probe is attached to the ear.
【００１０】また、投光窓部と受光窓部を除いたプロー
ブ本体の腹部と嵌着部に遮光性のカバーを被せたので、
外来光ノイズの混入を遮断できる。Further, since the abdominal portion and the fitting portion of the probe main body excluding the light projecting window portion and the light receiving window portion are covered with a light shielding cover,
It is possible to block the mixing of extraneous light noise.
【００１１】[0011]
【実施例】以下、本発明によるパルスオキシメータ用プ
ローブの具体的な実施例を図面に基づき詳細に説明す
る。図１にこのプローブの側面図を示し、図２に平面図
を示す。また、図３に挟持部材とカバーを取り外したプ
ローブ本体の底面図を示す。これらの図で、合成樹脂製
のプローブ本体１は上部側が弧状に膨出ており、やや先
を細めた先端部には図４に示すように耳の対珠２と耳珠
３の間の珠間切痕４と耳甲介腔Ａに嵌め込んだときに外
れない程度の大きさの略円形の嵌着部６が下側に突設さ
れている。この嵌着部６には、音の通りを確保するため
の円形の通音孔７が上下方向に穿設されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the pulse oximeter probe according to the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a side view of this probe, and FIG. 2 shows a plan view thereof. Further, FIG. 3 shows a bottom view of the probe main body with the holding member and the cover removed. In these figures, the synthetic resin probe main body 1 bulges in an arcuate shape on the upper side, and the tip of the tip is slightly tapered, as shown in FIG. A fitting portion 6 having a substantially circular shape and having a size that does not come off when fitted into the interstitial notch 4 and the concha of the ear concha A is provided on the lower side. A circular sound passage hole 7 is formed in the fitting portion 6 in the vertical direction for ensuring the passage of sound.
【００１２】プローブ本体１の基部側には、図５に示す
ように挟持部材８側の回動用の軸９が嵌め込まれる軸支
部１０が凹設されており、基部側端部には指押え１１が
形成されている。挟持部材８の基部側端部にも同様に指
押え１２が形成されている。プローブ本体１の基部と挟
持部材８の基部の溝部１３，１４には、軸部を囲うよう
に折り曲げられた板ばね１５の先端部が両部材の外側か
ら嵌め込まれるようになっており、軸部を支点にして回
動するプローブ本体１と挟持部材８にこの板ばね１５の
弾発力で測定部位を挟み付ける回動付勢力を付与してい
る。プローブ装着時には、開閉可能に取り付けられ閉方
向に弾発付勢されたこの挟持部材８によって耳介の対珠
２の背後が挟み付けられる。挟持部材８のやや丸みを帯
びた先端部８ａは、後述するプローブ本体１側の発光素
子の配設位置まで延びており、挟持部材８の先端部８ａ
で耳介を背後から押さえ付けたときに、耳の対珠２が発
光素子の窓部１６と嵌着部６側の受光素子の窓部１７に
密着できるようにしている。このとき、膨出部２７と嵌
着部６に挟み込まれた対珠２は、挟持部材８の先端部８
ａで耳介背後から押さえ込まれるため、三点支持となり
動きが生じにくい（図９参照）。As shown in FIG. 5, a shaft support portion 10 into which a rotating shaft 9 on the side of the holding member 8 is fitted is recessed on the base side of the probe main body 1, and a finger presser 11 is provided on the end portion on the base side. Are formed. A finger retainer 12 is also formed on the end portion of the holding member 8 on the base side. In the grooves 13 and 14 of the base of the probe main body 1 and the base of the holding member 8, the tip of a leaf spring 15 bent so as to surround the shaft is fitted from the outside of both members. A rotating biasing force for sandwiching the measurement site is applied to the probe main body 1 and the sandwiching member 8 which rotate about the fulcrum by the elastic force of the leaf spring 15. When the probe is attached, the back of the apex 2 of the auricle is pinched by the pinching member 8 which is attached so as to be openable and closed and elastically biased in the closing direction. The slightly rounded tip portion 8a of the holding member 8 extends to a position where a light emitting element is provided on the probe body 1 side described later, and the tip portion 8a of the holding member 8 is provided.
When the auricle is pressed from the rear side with, the antitragus 2 of the ear can be brought into close contact with the window portion 16 of the light emitting element and the window portion 17 of the light receiving element on the fitting portion 6 side. At this time, the antitragus 2 sandwiched between the bulging portion 27 and the fitting portion 6 has the tip portion 8 of the holding member 8.
Since it is pressed from the back of the pinna by a, it becomes a three-point support and does not move easily (see FIG. 9).
【００１３】互いに波長の異なる光を発する２つの発光
素子１８，１９は、図６に示すように細長のフレキシブ
ル基板２０の中央部に取り付けられ、このフレキシブル
基板２０の一端部に受光素子２１が取り付けられてい
る。フレキシブル基板２０の他端部のケーブル接続部２
２には、発光素子１８，１９と受光素子２１にパターン
接続された複数の電極２３が設けられており、これら電
極２３にプローブ本体１の後部から挿入される信号ケー
ブル２４が半田付けにより接続される。Two light emitting elements 18 and 19 which emit lights having different wavelengths are attached to the central portion of an elongated flexible substrate 20 as shown in FIG. 6, and a light receiving element 21 is attached to one end of this flexible substrate 20. Has been. Cable connection part 2 at the other end of the flexible substrate 20
2 is provided with a plurality of electrodes 23 pattern-connected to the light emitting elements 18 and 19 and the light receiving element 21, and a signal cable 24 inserted from the rear portion of the probe body 1 is connected to these electrodes 23 by soldering. It
【００１４】発光素子１８，１９の取付け部２５がケー
ブル接続部２２と共に組み付けられる組付け部２６は、
全体が透明樹脂からなり、発光素子１８，１９の投光窓
部１６と測定部位の押えを兼用している。このため、組
付け部２６の下部は膨出した形状となっており、嵌着部
６側に面する膨出部２７の面部は斜め状に立ち上がる傾
斜部となっている。この傾斜部に発光素子１８，１９の
投光窓部１６が形成されている。この組付け部２６を挟
持部材８側に面するプローブ本体１の下腹部に取り付け
ると、プローブ装着時に膨出部２７と嵌着部６とにより
耳の対珠２が挟み付けられ、対珠２を挟んで投光窓部１
６と後述する受光窓部１７が対向するようになる。組付
け部２６の上部に斜め状に設けられた突出部２８には、
ケーブル接続部２２を取り付けための４本のボッチ２９
が突設されている。フレキシブル基板２０を発光素子１
８，１９の取付け部２５が下を向くように図６中矢印Ａ
のように折り曲げて、発光素子１８，１９の取付け部２
５を窓部１６に嵌め込み、ケーブル接続部２２の取付け
孔３０にボッチ２９をそれぞれ嵌め込んだ状態で図７
（ａ），（ｂ）に示すように加熱したコテ先３１でボッ
チ２９を溶かすと、ケーブル接続部２２は組付け部２６
に固着される。このとき、さらにケーブル接続部２２と
組付け部２６とを接着剤を用いて強固に接着するのが望
ましい。ケーブル接続部２２の電極２３に半田付けされ
た信号ケーブル２４は、組付け部２６後部の切欠き凹部
３２から引き出される。発光素子１８，１９の取付け部
２５とケーブル接続部２２が取り付けられた組付け部２
６は、プローブ本体１の下部中央部（下腹部）に嵌め込
まれて固着される。The mounting portion 26 where the mounting portion 25 of the light emitting elements 18 and 19 is mounted together with the cable connecting portion 22 is
The whole is made of a transparent resin, and serves as both the light projecting window portion 16 of the light emitting elements 18 and 19 and the holding of the measurement site. Therefore, the lower portion of the assembling portion 26 has a bulged shape, and the surface portion of the bulging portion 27 facing the fitting portion 6 side is an inclined portion that rises in an oblique shape. The light projecting window portion 16 of the light emitting elements 18 and 19 is formed on this inclined portion. When the assembly portion 26 is attached to the lower abdomen of the probe body 1 facing the holding member 8, the ear pearl 2 is pinched by the bulging portion 27 and the fitting portion 6 when the probe is attached, and the pearl 2 Floodlight window 1 across
6 and a light receiving window portion 17 described later are opposed to each other. The protruding portion 28, which is obliquely provided on the upper portion of the assembly portion 26, includes
4 botches 29 for attaching the cable connection 22
Is projected. The flexible substrate 20 is used as the light emitting element 1
6 so that the mounting portions 25 of 8 and 19 face downward.
Bending as shown in FIG.
5 is fitted in the window portion 16 and the botches 29 are fitted in the mounting holes 30 of the cable connecting portion 22, respectively.
When the botch 29 is melted by the heated iron tip 31 as shown in FIGS.
Stuck to. At this time, it is desirable that the cable connecting portion 22 and the assembling portion 26 be further firmly bonded using an adhesive. The signal cable 24 soldered to the electrode 23 of the cable connection portion 22 is pulled out from the cutout recess 32 at the rear of the assembly portion 26. Assembly part 2 to which the attachment part 25 of the light emitting elements 18 and 19 and the cable connection part 22 are attached
6 is fitted and fixed in the lower central portion (lower abdomen) of the probe body 1.
【００１５】一方、フレキシブル基板２０一端側の受光
素子２１の取付け部３３が組み付けられる組付け部３４
も、全体が透明樹脂からなり、中央部に受光素子用の受
光窓部１７が形成されている。この組付け部３４の裏面
には、２本のボッチ２９が突設されており、これらボッ
チ２９に受光素子２１の取付け部３３に穿設された取付
け孔３０を嵌め込み、図７に示したようにこれらボッチ
２９を加熱したコテ先３１で溶かすことで、取付け部３
３を組付け部３４に固着できる。なお、さらに両者を接
着剤で強固に接着するのが望ましい。受光素子２１の取
付け部３３が組み付けられた組付け部３４は、膨出部２
７の発光窓部１６側に対向するプローブ本体先端部の嵌
着部６の壁面部に嵌め込まれて固着される。このときフ
レキシブル基板２０のパターン接続部は、プローブ本体
１の下部に形成された溝部３５に嵌め込まれる。On the other hand, a mounting portion 34 to which the mounting portion 33 of the light receiving element 21 on one end side of the flexible substrate 20 is mounted.
Also, the whole is made of transparent resin, and the light receiving window portion 17 for the light receiving element is formed in the central portion. Two botches 29 are provided on the back surface of the assembly portion 34, and the attachment holes 30 formed in the attachment portion 33 of the light receiving element 21 are fitted into these botches 29, as shown in FIG. By melting these botches 29 with a heated iron tip 31,
3 can be fixed to the mounting portion 34. In addition, it is desirable to firmly bond the both with an adhesive. The mounting portion 34 to which the mounting portion 33 of the light receiving element 21 is mounted is the bulging portion 2
7 is fitted and fixed to the wall surface portion of the fitting portion 6 at the tip of the probe body facing the light emitting window portion 16 side. At this time, the pattern connection portion of the flexible substrate 20 is fitted into the groove portion 35 formed in the lower portion of the probe body 1.
【００１６】発光素子部と受光素子部が取り付けられた
プローブ本体１と嵌着部６の下部には、遮光性を有する
材質からなるゴム製のカバー３６が被せられる。このカ
バー３６は、投光窓部１６と受光窓部１７の位置にこれ
らの窓部１６，１７を露出させるための孔が開けられて
いる。このカバー３６は、発光素子１８，１９から発せ
られる光の不用意な拡散と外来光ノイズの混入を防ぐ遮
光の機能を有するとともに、プローブを測定部位に装着
したときの装着性を高める働きを有している。A rubber cover 36 made of a light-shielding material is covered on the lower portion of the probe main body 1 to which the light emitting element portion and the light receiving element portion are attached and the fitting portion 6. The cover 36 has holes for exposing the window portions 16 and 17 at the positions of the light projecting window portion 16 and the light receiving window portion 17. The cover 36 has a light-shielding function of preventing inadvertent diffusion of light emitted from the light-emitting elements 18 and 19 and mixing of external light noise, and also has a function of enhancing wearability when the probe is attached to the measurement site. is doing.
【００１７】このように構成されるプローブでは、本体
１側と挟持部材８側の指押え１１，１２を摘んで、挟持
部材８を開き、プローブ本体１の嵌着部６を耳の珠間切
痕４に嵌め込んで、挟持部材８により耳介の対珠２の背
後を挟み込み、図８に示すように耳部に装着する。この
装着状態では、図９に示すようにプローブ本体１側に設
けられた投光窓部１６と受光窓部１７により耳の対珠２
が挟み込まれるようになり、発光素子１８，１９と受光
素子２１とが対珠２を挟んで対向する。このようにプロ
ーブ本体１側に発光素子１８，１９と受光素子２１を配
設したことで、測定中に体動が生じてプローブが揺れて
も、発光素子１８，１９と受光素子２１との距離が変動
せず、安定な測定を行える。In the probe thus constructed, the finger pressings 11 and 12 on the main body 1 side and the holding member 8 side are picked up to open the holding member 8 and the fitting portion 6 of the probe main body 1 to the intertragus notch. 4, the back of the antitragus 2 of the auricle is pinched by the pinching member 8, and it is attached to the ear part as shown in FIG. In this mounted state, as shown in FIG. 9, the antitragus 2 of the ear is provided by the light projecting window portion 16 and the light receiving window portion 17 provided on the probe body 1 side.
Are sandwiched, and the light emitting elements 18 and 19 and the light receiving element 21 face each other with the anti-cross 2 in between. By disposing the light emitting elements 18 and 19 and the light receiving element 21 on the probe body 1 side in this way, even if body movement occurs during measurement and the probe shakes, the distance between the light emitting elements 18 and 19 and the light receiving element 21. Does not change, and stable measurement can be performed.
【００１８】なお、プローブ本体１の先端部の嵌着部６
に投光窓部を設けて発光素子を埋め込み、プローブ本体
１の下腹部に突き出た膨出部２７に受光窓部を設けて受
光素子を埋め込むようにしてもよい。The fitting portion 6 at the tip of the probe body 1
It is also possible to provide a light projecting window portion to embed the light emitting element, and provide a light receiving window portion to the bulging portion 27 protruding to the lower abdomen of the probe body 1 to embed the light receiving element.
【００１９】[0019]
【発明の効果】以上説明したように本発明によれば、プ
ローブ本体に発光素子と受光素子とを配設し、互いに位
置関係が固定されたこれら発光素子と受光素子との間に
耳の対珠を挟み込んで測定を行なうようにしたので、従
来のように一対の挟持部材に発光素子と受光素子を配設
するのとは異なり、測定中に体動が生じて耳に装着した
プローブが揺れても、発光素子と受光素子との間の距離
が変動しないとともに、膨出部と嵌着部に挟み込まれた
対珠は、挟持部材の先端部で耳介背後から押さえ込まれ
るため、三点支持となり動きが生じにくく、誤差が混入
することなく高い精度で血液中の酸素飽和度を測定する
ことができる。また、発光素子と受光素子の窓部を除い
たプローブ本体に遮光性のカバーを被せたので、発光素
子からの光を不用意に拡散させることなく生体に照射で
きるとともに、外来光ノイズを遮断することができ、感
度の向上が図れるとともに、外来光による不規則性ノイ
ズの混入を防げる。また、耳の珠間切痕に嵌め込まれる
プローブ本体先端部の嵌着部に通音孔を穿設したので、
測定中でも聴覚を阻害することがなく、安全である。As described above, according to the present invention, the probe body is provided with the light emitting element and the light receiving element, and the ear pair is disposed between the light emitting element and the light receiving element whose positional relationship is fixed. Because the measurement is performed by sandwiching the beads, unlike the conventional arrangement of a light emitting element and a light receiving element on a pair of holding members, body movement occurs during measurement and the probe attached to the ear shakes. However, the distance between the light emitting element and the light receiving element does not change, and the antitragus sandwiched between the bulging portion and the fitting portion is pressed from behind the auricle by the tip of the holding member, so three-point support is possible. Therefore, the oxygen saturation in the blood can be measured with high accuracy without causing an error and without introducing an error. Further, since the probe main body excluding the window of the light emitting element and the light receiving element is covered with a light shielding cover, the light from the light emitting element can be irradiated to the living body without being carelessly diffused, and external light noise can be blocked. It is possible to improve the sensitivity and prevent mixing of irregular noise due to external light. In addition, because a sound hole is formed in the fitting part of the probe main body that is fitted into the intertraumatic notch of the ear,
It is safe because it does not interfere with hearing even during measurement.
【図１】本発明によるパルスオキシメータ用プローブの
一実施例を示す側面図である。FIG. 1 is a side view showing an embodiment of a pulse oximeter probe according to the present invention.
【図２】図１のプローブの平面図である。2 is a plan view of the probe of FIG. 1. FIG.
【図３】上記プローブの挟持部材とカバーを取り外した
プローブ本体の底面図である。FIG. 3 is a bottom view of the probe main body with the holding member and the cover of the probe removed.
【図４】耳の各部の位置関係を説明するための正面図で
ある。FIG. 4 is a front view for explaining the positional relationship of each part of the ear.
【図５】上記プローブの分解側面図である。FIG. 5 is an exploded side view of the probe.
【図６】発光素子と受光素子が取り付けられたフレキシ
ブル基板と投光窓部、受光窓部をそれぞれ備える組付け
部を示す斜視図である。FIG. 6 is a perspective view showing a flexible substrate to which a light emitting element and a light receiving element are attached, and an assembling section including a light projecting window section and a light receiving window section.
【図７】フレキシブル基板の組付け部への固着方法を示
す斜視図である。FIG. 7 is a perspective view showing a method of fixing a flexible substrate to an assembly portion.
【図８】耳部へのプローブの装着状態を示す斜視図であ
る。FIG. 8 is a perspective view showing how the probe is attached to the ear.
【図９】耳の対珠を挟み込む発光素子部と受光素子部の
位置関係を示す断面図である。FIG. 9 is a cross-sectional view showing a positional relationship between a light emitting element portion and a light receiving element portion that sandwich an antitragus of an ear.
【図１０】従来のクリップ式プローブの装着状態を示す
正面図である。FIG. 10 is a front view showing a mounted state of a conventional clip-type probe.
【図１１】従来のプローブの装着状態を模式的に示す断
面図である。FIG. 11 is a sectional view schematically showing a mounted state of a conventional probe.
１ プローブ本体 ２ 対珠 ３ 耳珠 ４ 珠間切痕 ５ 耳たぶ ６ 嵌着部 ７ 通音孔 ８ 挟持部材 ９ 回動用の軸 １０ 軸支部 １１，１２ 指押え １３，１４ 板ばね嵌合用の溝部 １５ 板ばね １６ 投光窓部 １７ 受光窓部 １８，１９ 発光素子 ２０ フレキシブル基板 ２１ 受光素子 ２２ ケーブル接続部 ２３ ケーブル接続用の電極 ２４ 信号ケーブル ２５ 発光素子の取付け部 ２６，３４ 組付け部 ２７ 膨出部 ２８ 突出部 ２９ ボッチ ３０ ボッチが入り込む取付け孔 ３１ コテ先 ３２ 信号ケーブルを引き出す切欠き凹部 ３３ 取付け部 ３５ 溝部 ３６ カバー 1 probe main body 2 antitragus 3 tragus 4 intertraumatic notch 5 earlobe 6 fitting part 7 sound passage hole 8 clamping member 9 rotation shaft 10 shaft support part 11, 12 finger presser 13, 14 leaf spring fitting groove part 15 plate Spring 16 Light emitting window 17 Light receiving window 18, 19 Light emitting element 20 Flexible substrate 21 Light receiving element 22 Cable connecting portion 23 Cable connecting electrode 24 Signal cable 25 Light emitting element mounting portion 26, 34 Assembly portion 27 Bulging portion 28 Projection 29 Bocchi 30 Mounting hole into which the bocchi is inserted 31 Iron tip 32 Notch recess for drawing out the signal cable 33 Mounting part 35 Groove 36 Cover
Claims (3)
なる光を生体に照射して波長による吸光特性の違いから
血液中の酸素飽和度を測定するために用いるパルスオキ
シメータ用プローブにおいて、 耳介を背後から挟み込む挟持部材を、ばね部材で閉方向
に付勢してプローブ本体の基部に開閉可能に取り付け、 この挟持部材に面するプローブ本体の腹部を膨出させ、
プローブ本体の先端部に耳の耳甲介腔と珠間切痕に嵌ま
り込む嵌着部を突設して、上記プローブ本体の腹部の膨
出部とこの嵌着部とで耳の対珠を挟み込めるようにし、 上記プローブ本体の膨出部と嵌着部との対向する面部
に、互いに光を授受する発光素子と受光素子とを投光窓
部と受光窓部を介してそれぞれ取り付けたことを特徴と
するパルスオキシメータ用プローブ。1. A pulse oximeter probe which is attached to a subject's ear and is used to measure oxygen saturation in blood from the difference in absorption characteristics depending on the wavelength by irradiating light with different wavelengths on a living body. A sandwiching member that sandwiches the via from the back is urged in a closing direction by a spring member to be openably and closably attached to the base portion of the probe main body, and the abdomen of the probe main body facing the sandwiching member is bulged.
At the tip of the probe body, a fitting part that fits into the concha of the ear and the intertragus notch is protrudingly provided, and the abdomen bulging part of the probe body and this fitting part are used to attach the antitragus of the ear. A light emitting element and a light receiving element, which transmit and receive light to and from each other, are attached to the opposing surface portions of the bulging portion and the fitting portion of the probe main body through the light projecting window portion and the light receiving window portion, respectively. A pulse oximeter probe.
通音孔を穿設したことを特徴とする請求項１記載のパル
スオキシメータ用プローブ。2. The pulse oximeter probe according to claim 1, wherein the fitting portion is provided with a sound passage hole for ensuring passage of sound.
る材質で形成されたカバーを、上記投光窓部と受光窓部
を除く上記プローブ本体の腹部と嵌着部にこれらの部位
を一体に覆うように被せたことを特徴とする請求項１ま
たは請求項２記載のパルスオキシメータ用プローブ。3. A cover formed of a material having a light-shielding property, which enhances the wearability, is formed integrally with the abdomen and the fitting portion of the probe body excluding the light projecting window and the light receiving window. The pulse oximeter probe according to claim 1 or 2, which is covered so as to cover the probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05306280A JP3116259B2 (en) | 1993-12-07 | 1993-12-07 | Probe for pulse oximeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05306280A JP3116259B2 (en) | 1993-12-07 | 1993-12-07 | Probe for pulse oximeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07155311A true JPH07155311A (en) | 1995-06-20 |
| JP3116259B2 JP3116259B2 (en) | 2000-12-11 |
Family
ID=17955199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05306280A Expired - Fee Related JP3116259B2 (en) | 1993-12-07 | 1993-12-07 | Probe for pulse oximeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3116259B2 (en) |
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