JPS63168148A - Hemomanometer - Google Patents
HemomanometerInfo
- Publication number
- JPS63168148A JPS63168148A JP61313132A JP31313286A JPS63168148A JP S63168148 A JPS63168148 A JP S63168148A JP 61313132 A JP61313132 A JP 61313132A JP 31313286 A JP31313286 A JP 31313286A JP S63168148 A JPS63168148 A JP S63168148A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- pressure
- sound pressure
- sheet
- sound
- 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
- 239000000463 material Substances 0.000 claims description 16
- 239000002131 composite material Substances 0.000 claims description 12
- 230000036772 blood pressure Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 239000011368 organic material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000035488 systolic blood pressure Effects 0.000 description 2
- 208000001953 Hypotension Diseases 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000035487 diastolic blood pressure Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036543 hypotension Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、心臓の収縮期および拡張期における末梢動脈
中の血圧、脈拍などを測定する血圧計、籍に電子式血圧
ｔｔＫ関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a sphygmomanometer, particularly an electronic blood pressure ttK, that measures blood pressure, pulse, etc. in peripheral arteries during systole and diastole of the heart. .
従来の血圧計は、カフと呼ばれる圧迫ベルトで上腕をし
めつけて動脈をつぶした状遣から徐々に圧力を下げ血液
が渡れ始める圧力を収縮期圧（最高血圧）とし血液が流
れ始める音を聴診器で聞くことてよって測定している。Conventional blood pressure monitors use a compression belt called a cuff to squeeze the upper arm and collapse the artery, then gradually lower the pressure and measure the pressure at which blood begins to cross as the systolic pressure (systolic pressure).The sound at which blood begins to flow is detected using a stethoscope. It is measured by what you hear.
拡張期圧（ｊｉｔ低血圧）は音が聞こえなくなるときの
圧力としている。最近では、聴診器を使わずに、楽音し
てその圧力を電気信号に変換して測定する成子式血圧計
が普及している。圧力ｔｗｔ気信号に変換する簡便な手
段としてはまず圧成効果を利用することが考えられるが
、これまで微少な音を効率良く電気信号に変換できる圧
電材料がなかつたため、現在は王として半導体圧力セ／
テが用いられている。Diastolic pressure (JIT hypotension) is defined as the pressure at which no sound can be heard. Recently, the Nariko blood pressure monitor, which measures the pressure by emitting musical sounds and converting the pressure into electrical signals, has become popular, without using a stethoscope. One possible simple means of converting pressure twt into an air signal is to use the compression effect, but as there have been no piezoelectric materials that can efficiently convert minute sounds into electrical signals, semiconductor pressure is currently the most popular method. Se/
Te is used.
一方、最近新しいｆｌＥ材料として無機圧ζ体と有機物
を複合化させ九ものが開発されて＆す１例えば、マテリ
アル・リサーチ・プリテｙ（ｔ４ａｔｅｒｉａｌｓＲ，
ｅｓｅａｒｃｈ Ｂｕｌｌｅｔｉｎ）誌ｇｔａ巻、ｐ５
９９〜６０７（１９７８）には、柱状黒磯圧電体が４脂
に埋め込まれた構造の複合圧成体が水中超音波に対して
高い受波感度をもつことが報告されている。しかし、こ
れをシート状にして、ｄｔ子子連血圧計音圧検出部に用
−るという着想はなかった。On the other hand, recently, nine new flE materials have been developed by combining inorganic ζ bodies and organic matter.
search Bulletin) magazine gta volume, p5
99-607 (1978), it was reported that a composite compressed body having a structure in which columnar Kuroiso piezoelectric bodies were embedded in four resins had high reception sensitivity to underwater ultrasound. However, there was no idea to make this sheet into a sheet and use it as a sound pressure detection section of a DT blood pressure monitor.
〔発明が解決しようとする間４点〕
本発明の目的は、圧電効果を用いた簡便な音圧検出機構
を有する高性能な成子式血圧計を提供することにある。[Four points to be solved by the invention] An object of the present invention is to provide a high-performance Seiko blood pressure monitor having a simple sound pressure detection mechanism using piezoelectric effect.
〔間１点を解決するための手段〕
上記目的は、音圧検出部に、シート状有機物の中に多数
の柱状無機圧電体がシート面に垂直に埋め込まれた構造
の複合圧電体を用いることによって達成される。[Means for resolving the gap] The above purpose is to use a composite piezoelectric material having a structure in which a large number of columnar inorganic piezoelectric materials are embedded perpendicularly to the sheet surface in a sheet-like organic material in the sound pressure detection section. achieved by.
ＳＸ図（ａ）に示した構造の複合圧電体は、有機物の種
類、無機圧電体の形状・体積分率を変えることにより圧
電Ｉｒｆ性、柔軟性などを制御することができ、基本的
には電気機械結合係数が大きく且つ柔軟性のある材料を
得ることができる。したがって、電気機械結合係数は大
きいが柔軟性がない圧電セラミックス、柔軟性はあるが
電気機械結合係数の小さい有機圧電体とは異なり、感度
の高い音圧検出器を得ることができる。The piezoelectric Irf property, flexibility, etc. of the composite piezoelectric material with the structure shown in SX diagram (a) can be controlled by changing the type of organic material and the shape and volume fraction of the inorganic piezoelectric material, and basically, A flexible material with a large electromechanical coupling coefficient can be obtained. Therefore, unlike piezoelectric ceramics which have a large electromechanical coupling coefficient but are not flexible, and organic piezoelectric materials which have flexibility but have a small electromechanical coupling coefficient, a highly sensitive sound pressure detector can be obtained.
音圧検出器は集音部の後に取り付けられるが。The sound pressure detector is installed after the sound collection section.
リング状の固定治具に両面に成極膜を設けた複合圧成体
シートを貼りつけるだけで簡単に構成することができる
。音圧を受けると柔軟な複合圧電体シートは変形し、圧
電効果により電圧が発生する。It can be easily constructed by simply attaching a composite press-formed sheet with polarization films on both sides to a ring-shaped fixing jig. When subjected to sound pressure, the flexible composite piezoelectric sheet deforms, and a voltage is generated due to the piezoelectric effect.
以下、本発明を実施例を参照しながら詳しく説明する。 Hereinafter, the present invention will be explained in detail with reference to Examples.
第１図（尋に示した構造の複合圧電体において、有機物
１１としてエポキシ系樹脂を用い、無機圧電体１２とし
てＰＺＴ系圧ぼセラミックスを用いた材料を作成した。In a composite piezoelectric body having the structure shown in FIG. 1, an epoxy resin was used as the organic material 11, and a PZT-based compressed ceramic was used as the inorganic piezoelectric material 12.
ここで、圧電セラミックスの体積分率は０．２５であり
、４１合圧電体の厚さは約６０ｐｍである。このシート
の両面に電極としてＡｔを蒸着した後１０ｍ＋φの円板
を切り出しり／グ（図示省略）に貼り付はリード線を取
り付は友。Here, the volume fraction of the piezoelectric ceramic is 0.25, and the thickness of the 41 piezoelectric body is about 60 pm. After vapor-depositing At as electrodes on both sides of this sheet, a 10 m+φ disk was cut out and attached to a plate (not shown) to which lead wires were attached.
この音圧検出素子２４を第１図（ｂ）に示したようにカ
フ２１に固定された集音部２２の後方の音圧検出部２３
の中に組み込んだ。音圧検出素子で発生する電気信号は
ケーブル２５全通して測定器本体（図示省略）に送られ
る。This sound pressure detection element 24 is fixed to the cuff 21 as shown in FIG.
incorporated into. The electrical signal generated by the sound pressure detection element is sent to the main body of the measuring instrument (not shown) through the entire cable 25.
実際に、第１図（ｂ）に示したカフを用い血圧測定を行
なったところ、半導体圧力センサを用いた場合と比較し
遜色のない結果が得られた。When blood pressure was actually measured using the cuff shown in FIG. 1(b), results comparable to those obtained using a semiconductor pressure sensor were obtained.
なお、本実施例では複合圧電体中の圧電セラミックスの
体積分率を０．２５としたが、体積分率が０、１〜０．
７であれば高性能な電子式血圧計が得られた。また有機
物に関してもエポキシ系樹脂に＠らずボリクレタン系樹
脂を用−でも良好な結果が得られた。In this example, the volume fraction of the piezoelectric ceramic in the composite piezoelectric body was set to 0.25, but the volume fraction was set to 0, 1 to 0.
7, a high-performance electronic blood pressure monitor was obtained. Regarding organic substances, good results were also obtained using polycrethane resin instead of epoxy resin.
以上説明したように、シート状有機物の中に多数の柱状
無機圧４体が多数理め込まれた構造の複合圧電体を音圧
検出部に用いることにより、簡便に音圧検出ができる圧
電型の高性能電子式血圧計が実現できることは明らかで
あるう
また複合圧電体を用いた音圧検出素子は広帯域の周波数
４性をもつためパルス状音圧に対しても応答性が良く、
脈拍数を測定するのにも有利である。As explained above, a piezoelectric type that can easily detect sound pressure by using a composite piezoelectric material with a structure in which a large number of four columnar inorganic pressure bodies are embedded in a sheet-like organic material is used in the sound pressure detection section. It is clear that a high-performance electronic blood pressure monitor can be realized.Also, the sound pressure detection element using a composite piezoelectric material has a wide frequency range of 4, so it has good responsiveness to pulsed sound pressure.
It is also advantageous for measuring pulse rate.
第１図（尋は複合圧電体の構造を示す斜視図、同図（ｂ
）は本発明の一実施例になる電子式血圧計におけるカフ
の構成を示す概略図である。
１１・・・有機物、１２・・・柱状無機圧電体、２１・
・・カフ、２２・・・集音部、２３・・・音圧検出部、
２４・・・複合圧電体による音圧検出素子、２５・・・
ケーブル、２６・・・送気管。Figure 1 (b is a perspective view showing the structure of a composite piezoelectric material,
) is a schematic diagram showing the configuration of a cuff in an electronic blood pressure monitor according to an embodiment of the present invention. 11...Organic substance, 12...Columnar inorganic piezoelectric material, 21.
... Cuff, 22 ... Sound collection section, 23 ... Sound pressure detection section,
24...Sound pressure detection element using composite piezoelectric material, 25...
Cable, 26... air pipe.
Claims (1)
に垂直に埋め込まれた構造の複合圧電体を音圧検出部に
用いることを特徴とする血圧計。1. A blood pressure monitor characterized in that a composite piezoelectric material having a structure in which a large number of columnar piezoelectric materials are embedded perpendicularly to the sheet surface in a sheet-like organic material is used in the sound pressure detection section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61313132A JPS63168148A (en) | 1986-12-29 | 1986-12-29 | Hemomanometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61313132A JPS63168148A (en) | 1986-12-29 | 1986-12-29 | Hemomanometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63168148A true JPS63168148A (en) | 1988-07-12 |
Family
ID=18037490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61313132A Pending JPS63168148A (en) | 1986-12-29 | 1986-12-29 | Hemomanometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63168148A (en) |
-
1986
- 1986-12-29 JP JP61313132A patent/JPS63168148A/en active Pending
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