JPH0112808Y2 - - Google Patents
Info
- Publication number
- JPH0112808Y2 JPH0112808Y2 JP10609883U JP10609883U JPH0112808Y2 JP H0112808 Y2 JPH0112808 Y2 JP H0112808Y2 JP 10609883 U JP10609883 U JP 10609883U JP 10609883 U JP10609883 U JP 10609883U JP H0112808 Y2 JPH0112808 Y2 JP H0112808Y2
- Authority
- JP
- Japan
- Prior art keywords
- finger
- slide
- light
- metal piece
- finger fixing
- 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.)
- Expired
Links
- 239000002184 metal Substances 0.000 claims description 14
- 230000017531 blood circulation Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 10
- 210000000078 claw Anatomy 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 5
- 230000036772 blood pressure Effects 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Description
【考案の詳細な説明】
本考案は、一対の発光・受光素子を指先の皮膚
に接触させ、表面組織部の透明度の光−電気観測
によつて血流の脈動を検出する血流検出器に関す
るものである。[Detailed description of the invention] The present invention relates to a blood flow detector that detects the pulsation of blood flow by optical-electrical observation of the transparency of the surface tissue by bringing a pair of light emitting/light receiving elements into contact with the skin of the fingertip. It is something.
指先の皮膚に一対の発光、受光素子を接触さ
せ、発光素子から出た光の指の血流の量による透
過率（反射率）の変化を受光素子で検知し、信号
処理後、計算することにより、脈摶及び血圧を測
定する装置がある。 A pair of light-emitting and light-receiving elements is brought into contact with the skin of the fingertip, and the light-receiving element detects changes in the transmittance (reflectance) of the light emitted from the light-emitting element depending on the amount of blood flow in the finger, and after signal processing, calculations are made. There are devices that measure pulse and blood pressure.
この場合、一対の発光、受光素子を指の皮膚に
接触させ、その状態を保持するには、第１図に示
すように２枚の指押え板１，２をシヤフト３によ
り連結し、指押え板１，２の一方に一対の発光・
受光素子（測定セル）４を取付け、スプリング５
の力で指６を挾むか、あるいは第２図に示すよう
にゴムなどで形成したキヤツプ７に測定セル４を
取付け、指６を挿入するようにしている。 In this case, in order to bring the pair of light-emitting and light-receiving elements into contact with the finger skin and maintain that state, two finger press plates 1 and 2 are connected by a shaft 3 as shown in FIG. A pair of light emitting lights on one side of plates 1 and 2.
Attach the light receiving element (measuring cell) 4 and tighten the spring 5.
Either the finger 6 is held between the fingers 6 and 6 by force, or the measuring cell 4 is attached to a cap 7 made of rubber or the like, as shown in FIG. 2, and the finger 6 is inserted.
しかし、第１図のような構造では、指６を挿入
した場合、指の太さによつて２枚の指押え板１，
２の開く角度が変わり、測定セル４と皮膚との接
触圧力も変化する。これは、第２図のような構造
のものでも同様である。 However, in the structure shown in FIG. 1, when the finger 6 is inserted, two finger press plates 1,
The opening angle of cell 2 changes, and the contact pressure between measurement cell 4 and the skin also changes. This also applies to the structure shown in FIG.
測定セル４と皮膚との接触圧力が大きい場合
は、測定セル４の接触位置及びその周辺の血管を
圧迫するため、正規の脈流に影響を与え、正しい
血流信号を検出し難くなる。また、測定セル４と
皮膚との接触圧力が小さい場合は、血流信号の検
出が困難である。 When the contact pressure between the measurement cell 4 and the skin is large, it compresses the contact position of the measurement cell 4 and the surrounding blood vessels, which affects normal pulsating flow and makes it difficult to detect correct blood flow signals. Furthermore, if the contact pressure between the measurement cell 4 and the skin is small, it is difficult to detect blood flow signals.
なお、適正な接触圧力は50〜150ｇ／cm2とされ
ているが、確実な検知、信号処理の簡素化、測定
制度の向上のためには、測定セルと皮膚との接触
圧力は指の太さに関係なく一定であることが望ま
しい。 The appropriate contact pressure is said to be 50 to 150 g/ cm2 , but in order to ensure reliable detection, simplify signal processing, and improve measurement accuracy, the contact pressure between the measurement cell and the skin should be as low as the thickness of a finger. It is desirable that it be constant regardless of the
本考案は上記事情に鑑みてなされたもので、指
の太さに拘らず適切な範囲内の一定の接触圧力で
血流信号を測定できる血流検出器を提供すること
を目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a blood flow detector that can measure blood flow signals with a constant contact pressure within an appropriate range, regardless of the thickness of the finger.
本考案は、半円状の溝の側壁外面にスライドガ
イド、溝内に指先固定用の爪をそれぞれ有する指
固定台にスライド台を係合し、このスライド台の
一端にセンサーブロツクを回動自在に連結し、こ
のブロツクの内面側に上下動可能な所定重量の金
属片を介し測定セルを取付け、金属片の重みによ
つて指の皮膚と測定セルとの接触圧力を得るよう
にしたことを特徴とする血流検出器である。 In the present invention, the slide base is engaged with a finger fixing base that has a slide guide on the outer surface of the side wall of a semicircular groove and a nail for fixing the fingertip in the groove, and a sensor block is rotatably attached to one end of the slide base. A measuring cell is attached to the inner surface of this block via a metal piece of a predetermined weight that can be moved up and down, and the contact pressure between the finger skin and the measuring cell is obtained by the weight of the metal piece. This is a characteristic blood flow detector.
以下、本考案を図示の実施例に基づいて詳細に
説明する。 Hereinafter, the present invention will be explained in detail based on illustrated embodiments.
第３図及び第４図は本考案の一実施例を示すも
ので、１１は指を納める半円状の溝１１ａを有す
る指固定台であり、この指固定台１１の溝１１ａ
の側壁外面にスライドガイド１１ｂが形成され、
溝１１ａ内に指先固定用の爪１１ｃが配置されて
いる。１２は前記スライドガイド１１ｂに係合さ
れたスライド台、１３はこのスライド台１２の一
端に回動自在に連結されたセンサーブロツクで、
その内面側に半円状の溝が形成されており、前記
指固定台１１と接合したとき溝１１ａとともに指
収納空間となる。１４はこのセンサーブロツク１
３の内面側に上下動（指固定台１１と接合した状
態で）可能に支持された所定重量の金属片、１５
はこの金属片１４に取付けられた一対の発光・受
光素子からなる測定セルである。 3 and 4 show an embodiment of the present invention, in which reference numeral 11 denotes a finger fixing base having a semicircular groove 11a in which a finger is placed;
A slide guide 11b is formed on the outer surface of the side wall of the
A fingertip fixing claw 11c is arranged within the groove 11a. 12 is a slide base engaged with the slide guide 11b; 13 is a sensor block rotatably connected to one end of the slide base 12;
A semicircular groove is formed on the inner surface thereof, and when joined to the finger fixing base 11, it becomes a finger storage space together with the groove 11a. 14 is this sensor block 1
A metal piece of a predetermined weight supported vertically (in a state connected to the finger fixing base 11) on the inner surface side of 3, 15
is a measurement cell consisting of a pair of light-emitting/light-receiving elements attached to this metal piece 14.
次に、動作について述べる。まず、第３図に示
すようにスライド台１２を溝１１ａから離れた位
置におくとともに、センサーブロツク１３を開い
た状態としておく。この状態で指の腹が上となる
ように指を溝１１ａ内におき、指先を固定用爪１
１ｃに引掛けて指を固定する。この後、スライド
台１２を矢印Ａ方向にスライドさせ所要の検出位
置で停止させる。そして、センサーブロツク１３
を図示矢印Ｂのように連結部を支点として回動
し、指固定台１１と接合させると、第４図に示す
ように金属片１４が自重により降下しその下面の
測定セル１５が指２０の皮膚に所要の接触圧力、
例えば約100ｇ／cm2の圧力で接触する。この測定
セル１５にはリード線１６が接続されており、発
光部への電圧印加、受光部の検出信号の伝達が行
われる。 Next, the operation will be described. First, as shown in FIG. 3, the slide stand 12 is placed in a position away from the groove 11a, and the sensor block 13 is left open. In this state, place your finger in the groove 11a with the pad of your finger facing up, and place your fingertip on the fixing claw 1.
Hang it on 1c and fix your finger. Thereafter, the slide table 12 is slid in the direction of arrow A and stopped at a desired detection position. And sensor block 13
When the metal piece 14 is rotated about the connecting part as a fulcrum as shown by the arrow B in the figure and joined to the finger fixing base 11, the metal piece 14 descends under its own weight as shown in FIG. the required contact pressure on the skin,
For example, contact is made at a pressure of about 100 g/cm 2 . A lead wire 16 is connected to this measurement cell 15, through which voltage is applied to the light emitting section and a detection signal from the light receiving section is transmitted.
検出位置を変更したい場合には、センサーブロ
ツク１３を開き、スライド台１２をスライドさせ
た後、再びブロツク１３を閉じれば測定セル１５
が皮膚に接触する。このときにも金属片１４の重
みにより約100ｇ／cm2の接触圧力が保たれる。つ
まり、太さの異なる部位であつても、従つて指の
太さが変わつても接触圧力は一定となる。 If you want to change the detection position, open the sensor block 13, slide the slide table 12, and close the block 13 again to change the measurement cell 15.
comes into contact with the skin. At this time, a contact pressure of approximately 100 g/cm 2 is maintained due to the weight of the metal piece 14. In other words, the contact pressure remains constant even if the parts have different thicknesses, and therefore even if the thickness of the finger changes.
なお、金属片１４はその重量を若干減らし、減
少分をばねによつて補つてもよく、それによつて
金属片の上下動が円滑になる。 Note that the weight of the metal piece 14 may be slightly reduced, and the reduced weight may be compensated for by a spring, thereby smoothing the vertical movement of the metal piece.
以上のように本考案によれば、半円状の溝を有
する指固定台にスライドガイドを設けてスライド
台を係合させ、このスライド台の一端にセンサー
ブロツクを回動自在に連結するとともにその内面
側に所定重量の金属片を上下動自在に支持し、こ
れに測定セルを取付けたので、スライド量によつ
て検出位置を自在に設定でき、しかも接触圧力は
金属片の重みで決まるので、指の太さに拘らず接
触圧力を適切な一定値に保つことができ、指先で
脈摶や血圧を測定する場合、正確な血流信号が得
られる。また、溝内に指先固定用の爪を配置した
ので、指が固定され、測定部全体がカバーされる
ことと相俟つてノイズの少ない信号を検出でき
る。 As described above, according to the present invention, a slide guide is provided on a finger fixing base having a semicircular groove to engage the slide base, and a sensor block is rotatably connected to one end of the slide base. A metal piece of a predetermined weight is supported on the inner surface so that it can move up and down, and a measuring cell is attached to this, so the detection position can be set freely depending on the amount of slide, and the contact pressure is determined by the weight of the metal piece. The contact pressure can be maintained at an appropriate constant value regardless of the thickness of the finger, and accurate blood flow signals can be obtained when measuring pulse rate or blood pressure with the fingertip. In addition, since the fingertip fixing claw is arranged in the groove, the finger is fixed and the entire measuring section is covered, and a signal with less noise can be detected.
第１図及び第２図は従来の血流検出器の構造例
を示す斜視図、第３図は本考案に係る血流検出器
の一実施例を示す斜視図、第４図は同実施例の指
セツト状態を示す断面図である。
１１……指固定台、１１ａ……溝、１１ｂ……
スライドガイド、１１ｃ……指先固定用爪、１２
……スライド台、１３……センサーブロツク、１
４……金属片、１５……測定セル。
1 and 2 are perspective views showing an example of the structure of a conventional blood flow detector, FIG. 3 is a perspective view showing an embodiment of the blood flow detector according to the present invention, and FIG. 4 is a perspective view of the same embodiment. FIG. 3 is a cross-sectional view showing a finger set state. 11...Finger fixing base, 11a...Groove, 11b...
Slide guide, 11c...Fingertip fixing claw, 12
...Slide stand, 13...Sensor block, 1
4...metal piece, 15...measuring cell.
Claims (1)
に指先固定用の爪をそれぞれ有する指固定台と、
この指固定台のスライドガイドに沿つてスライド
するスライド台と、このスライド台の一端に回動
自在に連結され、前記指固定台との接合時に指収
納空間を形成するセンサーブロツクと、このブロ
ツクの内面側に上下動可能に支持された所定重量
の金属片と、この金属片に取付けられた一対の発
光・受光素子からなる測定セルとを備えてなる血
流検出器。 a finger fixing table having a slide guide on the outer surface of the side wall of the semicircular groove and a finger fixing claw in the groove;
A slide base that slides along the slide guide of the finger fixing base; a sensor block that is rotatably connected to one end of the slide base and forms a finger storage space when joined to the finger fixing base; A blood flow detector comprising a metal piece of a predetermined weight supported on the inner surface so as to be movable up and down, and a measurement cell consisting of a pair of light-emitting/light-receiving elements attached to the metal piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10609883U JPS6015303U (en) | 1983-07-08 | 1983-07-08 | blood flow detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10609883U JPS6015303U (en) | 1983-07-08 | 1983-07-08 | blood flow detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6015303U JPS6015303U (en) | 1985-02-01 |
| JPH0112808Y2 true JPH0112808Y2 (en) | 1989-04-14 |
Family
ID=30248430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10609883U Granted JPS6015303U (en) | 1983-07-08 | 1983-07-08 | blood flow detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6015303U (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62197040A (en) * | 1986-02-25 | 1987-08-31 | シャープ株式会社 | Blood pressure measuring apparatus |
| JPH0730006Y2 (en) * | 1989-08-24 | 1995-07-12 | 株式会社ミサワホーム総合研究所 | Finger pulse wave sensor |
| JPH0730007Y2 (en) * | 1989-09-19 | 1995-07-12 | 株式会社ミサワホーム総合研究所 | Finger pulse wave sensor |
| SG130951A1 (en) * | 2005-09-13 | 2007-04-26 | Glucostats System Pte Ltd | An arrangement for providing a constant contact pressure for a probe |
| JP6524867B2 (en) * | 2015-09-02 | 2019-06-05 | トヨタ自動車株式会社 | Neck band type biological information detector |
-
1983
- 1983-07-08 JP JP10609883U patent/JPS6015303U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6015303U (en) | 1985-02-01 |
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