JP2003014571A - Fluid pressure detector - Google Patents
Fluid pressure detectorInfo
- Publication number
- JP2003014571A JP2003014571A JP2001199443A JP2001199443A JP2003014571A JP 2003014571 A JP2003014571 A JP 2003014571A JP 2001199443 A JP2001199443 A JP 2001199443A JP 2001199443 A JP2001199443 A JP 2001199443A JP 2003014571 A JP2003014571 A JP 2003014571A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- flexible member
- fluid
- expansion
- liquid
- 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 Fluid Pressure (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- External Artificial Organs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、管体内を流れる流
体の圧力を検出する流体圧力検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid pressure detecting device for detecting the pressure of fluid flowing in a pipe.
【０００２】[0002]
【従来の技術】例えば医療分野においては、流体を循環
させる流体循環回路として、医療装置に冷却液を循環さ
せる冷却液循環回路、血液透析装置や成分採血装置など
に血液を循環させる血液循環回路などがある。これらの
循環回路には、循環する流体の圧力を検出する流体圧力
検出装置が組み込まれ、検出した圧力に基づいて、管体
の詰まりや流体漏れなどの異常が発生したか否かを監視
している。2. Description of the Related Art In the medical field, for example, as a fluid circulation circuit for circulating a fluid, a cooling fluid circulation circuit for circulating a cooling fluid in a medical device, a blood circulation circuit for circulating blood in a hemodialysis device, a component blood collecting device, etc. There is. A fluid pressure detection device that detects the pressure of the circulating fluid is incorporated in these circulation circuits, and based on the detected pressure, it is monitored whether an abnormality such as clogging of the pipe body or fluid leakage has occurred. There is.
【０００３】例えば、特公平８−３３３３２号公報に
は、流体の圧力により拡張変形する管体と、管体の一部
分に接続されるセンサとを備え、センサが接続された部
分の拡張変化量に基づいて流体圧力を検出する流体圧力
検出装置が示されている。For example, Japanese Examined Patent Publication No. 8-33332 includes a tubular body which expands and deforms due to the pressure of a fluid, and a sensor connected to a part of the tubular body, and the expansion change amount of the part to which the sensor is connected. A fluid pressure sensing device is shown that senses fluid pressure based thereon.
【０００４】また、特開平７−３３３０９３号公報に
は、流体が導かれる開口に、流体の圧力により拡張変形
するダイヤフラムを設け、当該ダイヤフラムを押圧する
ように圧力センサを設けた流体圧力検出装置が示されて
いる。Further, Japanese Laid-Open Patent Publication No. 7-333093 discloses a fluid pressure detecting device in which an opening through which a fluid is introduced is provided with a diaphragm which is expanded and deformed by the pressure of the fluid, and a pressure sensor is provided so as to press the diaphragm. It is shown.
【０００５】[0005]
【発明が解決しようとする課題】前者の流体圧力検出装
置にあっては、管体の拡張変形を規制する部材が当該管
体の周囲に設けられていないため、管体に微小な偏肉が
あると、薄肉部分が他の部分に比べて変形し易くなる。
このため、流体の圧力に応じた拡張変形量をセンサに正
確に伝達することが難しく、その結果、流体圧力を正確
に検出できないという問題がある。In the former fluid pressure detecting device, since a member for restricting the expansion and deformation of the tubular body is not provided around the tubular body, a minute uneven thickness is formed in the tubular body. If so, the thin portion is more likely to be deformed than other portions.
Therefore, it is difficult to accurately transmit the expansion deformation amount corresponding to the fluid pressure to the sensor, and as a result, there is a problem that the fluid pressure cannot be accurately detected.
【０００６】一方、後者の流体圧力検出装置にあって
は、圧力センサによりダイヤフラムの拡張変形が規制さ
れるため、ダイヤフラムに微小な偏肉があっても、当該
ダイヤフラムを介して、流体の圧力を圧力センサに正確
に伝達することはできる。しかしながら、ダイヤフラム
に圧力センサを向かい合わせて配置しなければならない
ため、そのための構造が必要になったり、組み付け作業
が煩雑になったりするという問題がある。On the other hand, in the latter fluid pressure detecting device, since the expansion and deformation of the diaphragm is regulated by the pressure sensor, even if the diaphragm has a slight uneven thickness, the pressure of the fluid is detected through the diaphragm. It can be accurately transmitted to the pressure sensor. However, since the pressure sensor has to be arranged so as to face the diaphragm, there is a problem that a structure therefor is required and the assembling work becomes complicated.
【０００７】本発明は、上記従来技術に伴なう課題を解
決するためになされたものであり、不均一な拡張変形が
生じた場合でも流体圧力を正確に検出でき、しかも、構
造が簡素で、取り扱いも容易な流体圧力検出装置を提供
することを目的とする。The present invention has been made in order to solve the problems associated with the above-mentioned prior art. It is possible to accurately detect the fluid pressure even when uneven expansion deformation occurs, and the structure is simple. An object of the present invention is to provide a fluid pressure detection device that is easy to handle.
【０００８】[0008]
【課題を解決するための手段】本発明の目的は、下記す
る手段により達成される。The objects of the present invention are achieved by the following means.
【０００９】（１）内部に流路を有する管体と、前記管
体に形成され前記流路と連通する少なくとも１つの側孔
と、前記側孔が形成された前記管体の表面に設けられ、
流体の圧力により拡張変形自在な可撓性部材と、前記可
撓性部材の拡張範囲を限定する凹部が形成されたケース
体と、前記凹部に臨むように前記ケース体に取り付けら
れ、前記凹部の内面に圧接する前記可撓性部材の拡張圧
を検出する圧力センサと、を有し、前記可撓性部材は、
流体の圧力による拡張変形量が前記管体よりも大きく、
前記管体の全周を前記側孔を含むように覆ってなる流体
圧力検出装置。(1) A tubular body having a channel inside, at least one side hole formed in the tubular body and communicating with the channel, and provided on the surface of the tubular body in which the side hole is formed. ,
A flexible member that can be expanded and deformed by the pressure of a fluid, a case body in which a concave portion that limits the expansion range of the flexible member is formed, and a flexible member that is attached to the case body so as to face the concave portion, A pressure sensor that detects an expansion pressure of the flexible member that is pressed against the inner surface, wherein the flexible member is
The amount of expansion deformation due to the fluid pressure is larger than that of the tubular body,
A fluid pressure detection device which covers the entire circumference of the tubular body so as to include the side hole.
【００１０】（２）前記圧力センサにより検出した拡張
圧が所定範囲内にあるか否かを判断する判断部と、検出
した拡張圧が所定範囲外であるときに、その旨を報知す
る報知部と、をさらに有する上記（１）に記載の流体圧
力検出装置。(2) A judging section for judging whether or not the expansion pressure detected by the pressure sensor is within a predetermined range, and a notification section for notifying that when the detected expansion pressure is outside the predetermined range. The fluid pressure detection device according to (1), further including:
【００１１】（３）前記可撓性部材は、前記管体が挿入
されるチューブ形状を有し、長手方向両端部が前記管体
の外面に取り付けられていることを特徴とする上記
（１）に記載の流体圧力検出装置。(3) The flexible member has a tube shape into which the tubular body is inserted, and both longitudinal ends thereof are attached to the outer surface of the tubular body. The fluid pressure detection device according to.
【００１２】（４）前記可撓性部材が取り付けられた前
記管体は、前記圧力センサが取り付けられた前記ケース
体に対して、着脱自在に取り付けられることを特徴とす
る上記（１）に記載の流体圧力検出装置。(4) The above-mentioned (1) is characterized in that the pipe body to which the flexible member is attached is detachably attached to the case body to which the pressure sensor is attached. Fluid pressure detection device.
【００１３】（５）前記管体および前記可撓性部材の内
部は、外界から遮断されていることを特徴とする上記
（１）に記載の流体圧力検出装置。(5) The fluid pressure detecting device according to the above (1), wherein the inside of the tubular body and the inside of the flexible member are shielded from the outside.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施形態を図面を
参照しつつ説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００１５】図１は、本発明に係る流体圧力検出装置４
０を組み込んだ流体循環システム１０を示す概略構成
図、図２（Ａ）（Ｂ）は、図１に示される圧力検出部４
１を示す断面図、図３は、送液チューブ２５およびチュ
ーブ形状を有する可撓性部材５０を示す斜視図、図４
（Ａ）（Ｂ）は、ケース体６０を示す斜視図である。FIG. 1 shows a fluid pressure detecting device 4 according to the present invention.
2 is a schematic configuration diagram showing a fluid circulation system 10 incorporating 0, and FIGS.
1 is a cross-sectional view showing the liquid feeding tube 25 and a flexible member 50 having a tube shape.
(A) and (B) are perspective views showing a case body 60.
【００１６】図１に示される流体循環システムは、医療
分野において用いられる冷却液循環システム１０であ
り、冷却液が循環する循環回路２０と、冷却液を冷却す
る冷却装置３０と、冷却液の圧力を検出する流体圧力検
出装置４０と、を有する。冷却液２１には、例えば、滅
菌精製水や滅菌生理食塩水などが用いられる。The fluid circulation system shown in FIG. 1 is a cooling liquid circulation system 10 used in the medical field. The circulation circuit 20 circulates the cooling liquid, the cooling device 30 for cooling the cooling liquid, and the pressure of the cooling liquid. And a fluid pressure detection device 40 for detecting. For the cooling liquid 21, for example, sterilized purified water or sterilized physiological saline is used.
【００１７】循環回路２０は、冷却液２１を一時的に貯
留する冷却バッグ２２と、送液ポンプ２３と、冷却が必
要な治療装置２４内の水路とを、送液チューブ２５およ
び返液チューブ２６を介してシリーズに接続して構成さ
れている。循環回路２０の途中に異物除去フィルタをさ
らに組み込み、循環過程において混入した異物を除去し
てもよい。送液ポンプ２３は、ローラーポンプ、拍動ポ
ンプ、遠心ポンプなどから構成されている。冷却が必要
な治療装置２４として、例えば、生体の病変部位にレー
ザを照射して加熱治療するレーザ照射装置が挙げられ
る。冷却液２１が直接接触する、冷却バッグ２２、治療
装置２４およびチューブ２５、２６は、使用が１回限り
のディスポーザブルである。The circulation circuit 20 includes a cooling bag 22 for temporarily storing the cooling liquid 21, a liquid feeding pump 23, a water channel in the treatment device 24 requiring cooling, a liquid feeding tube 25 and a liquid returning tube 26. It is configured by connecting to the series via. A foreign matter removal filter may be further incorporated in the circulation circuit 20 to remove the foreign matter mixed in during the circulation process. The liquid feed pump 23 is composed of a roller pump, a pulsation pump, a centrifugal pump, and the like. Examples of the treatment device 24 that requires cooling include a laser irradiation device that irradiates a lesion site of a living body with a laser to perform heat treatment. The cooling bag 22, the treatment device 24 and the tubes 25, 26, which come into direct contact with the cooling liquid 21, are disposable for one-time use.
【００１８】冷却装置３０は、ペルチェ素子により冷却
される冷却板３１を備えている。冷却バッグ２２を冷却
板３１に接触させることにより、冷却バッグ２２内の冷
却液２１が所定の温度に冷却される。The cooling device 30 includes a cooling plate 31 cooled by a Peltier element. By bringing the cooling bag 22 into contact with the cooling plate 31, the cooling liquid 21 in the cooling bag 22 is cooled to a predetermined temperature.
【００１９】流体圧力検出装置４０は、送液ポンプ２３
の吐出側に配置された圧力検出部４１と、圧力検出部４
１からの信号が入力され冷却液２１の圧力を監視するコ
ントローラ４２と、を有する。なお、圧力検出部４１は
返液チューブ２６に設けることもできるが、図示例のよ
うに、循環回路２０において最も冷却液２１の圧力が高
い送液ポンプ２３の直後に設けるのが好ましい。The fluid pressure detecting device 40 comprises a liquid feed pump 23.
Pressure detector 41 and the pressure detector 4 arranged on the discharge side of
The controller 42 receives the signal from the controller 1 and monitors the pressure of the cooling liquid 21. Although the pressure detection unit 41 can be provided in the liquid return tube 26, it is preferably provided immediately after the liquid feed pump 23 in which the pressure of the cooling liquid 21 is highest in the circulation circuit 20, as in the illustrated example.
【００２０】圧力検出部４１は、図２（Ａ）（Ｂ）に示
すように、内部に冷却液２１（流体に相当する）が流れ
る流路を有する送液チューブ２５（管体に相当する）
と、送液チューブ２５に形成され流路と連通する少なく
とも１つ（図示例では複数個）の側孔２７と、側孔２７
が形成された送液チューブ２５の表面に設けられ、側孔
２７を介して導かれた冷却液２１の圧力により拡張変形
自在な可撓性部材５０と、可撓性部材５０の拡張範囲を
限定する凹部６１が形成されたケース体６０と、凹部６
１に臨むようにケース体６０に取り付けられ、凹部６１
の内面６１ａに圧接する可撓性部材５０の拡張圧Ｐを検
出する圧力センサ７０と、を有する。可撓性部材５０
は、冷却液圧力による拡張変形量が送液チューブ２５よ
りも大きい。また、可撓性部材５０は、送液チューブ２
５の全周を側孔２７を含むように覆っている。As shown in FIGS. 2 (A) and 2 (B), the pressure detection unit 41 has a liquid feed tube 25 (corresponding to a tubular body) having a flow passage inside which the cooling liquid 21 (corresponding to a fluid) flows.
And at least one (a plurality of in the illustrated example) side holes 27 formed in the liquid feeding tube 25 and communicating with the flow path, and the side holes 27.
The flexible member 50 that is provided on the surface of the liquid supply tube 25 in which is formed and is expandable and deformable by the pressure of the cooling liquid 21 guided through the side hole 27, and the expansion range of the flexible member 50 are limited. Case body 60 having a concave portion 61 formed therein and the concave portion 6
1 is attached to the case body 60 to face the concave portion 61.
And a pressure sensor 70 that detects the expansion pressure P of the flexible member 50 that is in pressure contact with the inner surface 61a. Flexible member 50
Has a larger amount of expansion deformation due to the coolant pressure than the liquid delivery tube 25. Further, the flexible member 50 is used as the liquid delivery tube 2
5 is covered so as to include the side hole 27.
【００２１】送液チューブ２５は、金属などのパイプ状
のものでもよいが、柔軟性を有するプラスチック製チュ
ーブ、とりわけポリ塩化ビニル、ポリウレタン、シリコ
ーン、エラストマー、軟質オレフィン系などが好まし
い。The liquid-feeding tube 25 may be a pipe made of metal or the like, but a flexible plastic tube, particularly polyvinyl chloride, polyurethane, silicone, elastomer, soft olefin, etc., is preferable.
【００２２】図３に示すように、可撓性部材５０は、送
液チューブ２５が挿入されるチューブ形状を有する。図
３に矢印で示すように、可撓性部材５０は、側孔２７を
覆う位置まで移動した後に、長手方向両端部を熱融着す
ることにより、送液チューブ２５の外周面に取り付けら
れている。長手方向両端部において、可撓性部材５０の
内周面と送液チューブ２５の外周面との間の隙間が密封
され、この部位からの冷却液２１の漏れが防止される。
これにより、送液チューブ２５および可撓性部材５０の
内部は外界から遮断され、冷却液２１と圧力センサ７０
とは、非接触の状態に維持されている。なお、熱融着に
代えて、接着剤により可撓性部材５０を送液チューブ２
５の外周面に取り付けることもできる。As shown in FIG. 3, the flexible member 50 has a tube shape into which the liquid feeding tube 25 is inserted. As shown by the arrow in FIG. 3, the flexible member 50 is attached to the outer peripheral surface of the liquid feeding tube 25 by moving the both ends in the longitudinal direction by heat fusion after moving to a position covering the side hole 27. There is. At both ends in the longitudinal direction, the gap between the inner peripheral surface of the flexible member 50 and the outer peripheral surface of the liquid supply tube 25 is sealed, and the leakage of the cooling liquid 21 from this portion is prevented.
As a result, the insides of the liquid supply tube 25 and the flexible member 50 are shielded from the outside world, and the cooling liquid 21 and the pressure sensor 70.
And are maintained in a non-contact state. Instead of heat fusion, the flexible member 50 is attached to the liquid feeding tube 2 by an adhesive.
It can also be attached to the outer peripheral surface of 5.
【００２３】可撓性部材５０の材質は、液流圧力によっ
て敏感に拡張する材質であれば、特に限定されるもので
はなく、例えば、シリコーンゴム、ポリウレタンエラス
トマー、オレフィン系エラストマー、天然ゴム素材など
のゴム弾性を有する材質などを例示できる。また、送液
チューブ２５の材質と可撓性部材５０の材質とが同じ場
合には、流体の圧力による拡張変形量を送液チューブ２
５よりも大きくするために、可撓性部材５０の肉厚を送
液チューブ２５よりも薄く形成すればよい。例えば、外
径６ｍｍ、内径３ｍｍの送液チューブ２５を使用する場
合には、チューブ形状の可撓性部材５０の外径を７ｍ
ｍ、内径を６ｍｍに形成すればよい。The material of the flexible member 50 is not particularly limited as long as it is a material that is sensitively expanded by the liquid pressure, and examples thereof include silicone rubber, polyurethane elastomer, olefin elastomer, and natural rubber material. A material having rubber elasticity can be exemplified. When the material of the liquid feeding tube 25 and the material of the flexible member 50 are the same, the amount of expansion deformation due to the pressure of the fluid is determined by the liquid feeding tube 2
In order to make it larger than 5, the thickness of the flexible member 50 may be formed thinner than the liquid feeding tube 25. For example, when the liquid feeding tube 25 having an outer diameter of 6 mm and an inner diameter of 3 mm is used, the outer diameter of the tube-shaped flexible member 50 is 7 m.
m and an inner diameter of 6 mm.
【００２４】図４（Ａ）（Ｂ）に示すように、ケース体
６０は、上ケース６２と、下ケース６３と、上下のケー
ス６２、６３を接続するヒンジ部６４とを有し、開閉自
在に構成されている。上下のケース６２、６３のそれぞ
れには、略半球状の窪み６２ａ、６３ａが形成され、両
ケース６２、６３を閉じることにより、窪み６２ａ、６
３ａにより、可撓性部材５０の全周を覆う形状を有する
凹部６１が形成される。上下のケース６２、６３を閉じ
た状態は、図示しないロック機構により維持される。ケ
ース体６０の凹部内面６１ａと非拡張時における可撓性
部材５０の外周面との間の寸法は、可撓性部材５０の最
大拡張変形量を考慮し、定常運転時の冷却液圧力のとき
に、可撓性部材５０が余裕を持って凹部内面６１ａに圧
接し得る程度の寸法に設定される。例えば、前記寸法
は、３ｍｍ程度である。As shown in FIGS. 4A and 4B, the case body 60 has an upper case 62, a lower case 63, and a hinge portion 64 connecting the upper and lower cases 62, 63, and can be freely opened and closed. Is configured. Each of the upper and lower cases 62, 63 is formed with a substantially hemispherical recess 62a, 63a. By closing both the cases 62, 63, the recesses 62a, 6 are formed.
The concave portion 61 having a shape covering the entire circumference of the flexible member 50 is formed by 3a. The closed state of the upper and lower cases 62 and 63 is maintained by a lock mechanism (not shown). The dimension between the inner surface 61a of the recess of the case body 60 and the outer peripheral surface of the flexible member 50 in the non-expanded state is set in consideration of the maximum expansion deformation amount of the flexible member 50 when the coolant pressure is in the steady operation. In addition, the flexible member 50 is set to a size that allows the flexible member 50 to be pressed against the inner surface 61a of the recess with a margin. For example, the dimension is about 3 mm.
【００２５】圧力センサ７０は、上ケース６２に形成し
た取り付け孔６５に、接着剤６６により取り付けられて
いる。ねじ込み式により、圧力センサ７０を取り付けて
もよい。圧力センサ７０は、電気式または機械式の公知
のセンサを用いることができるが、圧力を電圧に変換し
て定量的に計測し得るセンサが好ましい。例えば、応力
を受けると抵抗値や静電容量が変化する半導体圧力トラ
ンスジューサを用いることができる。圧力センサ７０の
感圧部分７１は、凹部内面６１ａと面一に、または、凹
部内面６１ａよりも若干突出した位置に配置される。The pressure sensor 70 is attached to an attachment hole 65 formed in the upper case 62 with an adhesive 66. The pressure sensor 70 may be attached by screwing. As the pressure sensor 70, a known sensor of electric type or mechanical type can be used, but a sensor that can convert pressure to voltage and measure quantitatively is preferable. For example, it is possible to use a semiconductor pressure transducer whose resistance value or capacitance changes when stress is applied. The pressure-sensitive portion 71 of the pressure sensor 70 is arranged flush with the recess inner surface 61a or at a position slightly protruding from the recess inner surface 61a.
【００２６】可撓性部材５０が取り付けられた送液チュ
ーブ２５は、圧力センサ７０が取り付けられたケース体
６０に対して、着脱自在に取り付けられる。これによ
り、圧力検出部４１を、可撓性部材５０と送液チューブ
２５とを含むディスポーザブル部分と、ケース体６０と
圧力センサ７０とを含むリユーザブル部分とから構成で
きる。The liquid feeding tube 25 to which the flexible member 50 is attached is detachably attached to the case body 60 to which the pressure sensor 70 is attached. Accordingly, the pressure detection unit 41 can be configured by the disposable portion including the flexible member 50 and the liquid feeding tube 25, and the reusable portion including the case body 60 and the pressure sensor 70.
【００２７】図１を参照して、圧力センサ７０はコント
ローラ４２に接続され、検出した拡張圧Ｐつまり冷却液
圧力に関する信号がコントローラ４２に入力される。冷
却液２１が正常に循環しているときでも、流れの脈動な
どによって、可撓性部材５０の拡張圧Ｐは僅かながらも
変動している。コントローラ４２は、予め設定されてい
る上限しきい値と下限しきい値とに基づいて、拡張圧Ｐ
が所定範囲内にあるか否かを判断する。そして、コント
ローラ４２は、拡張圧Ｐが所定範囲外であるときには、
その旨を報知する。上限しきい値は、循環回路２０を構
成する冷却バッグ２２、治療装置２４内の水路、チュー
ブ２５、２６の耐圧限界値を超えない値に設定されてい
る。コントローラ４２が判断部および報知部として機能
し、ディスプレイ４３が報知部として機能する。Referring to FIG. 1, the pressure sensor 70 is connected to the controller 42, and a signal relating to the detected expansion pressure P, that is, the coolant pressure is input to the controller 42. Even when the cooling liquid 21 normally circulates, the expansion pressure P of the flexible member 50 fluctuates slightly due to pulsation of the flow. The controller 42 determines the expansion pressure P based on the preset upper limit threshold and lower limit threshold.
Is within a predetermined range. Then, the controller 42, when the expansion pressure P is out of the predetermined range,
Notify to that effect. The upper limit threshold value is set to a value that does not exceed the pressure resistance limit values of the cooling bag 22, the water channels in the treatment device 24, and the tubes 25 and 26 that constitute the circulation circuit 20. The controller 42 functions as a determination unit and a notification unit, and the display 43 functions as a notification unit.
【００２８】次に、本実施形態の作用を説明する。Next, the operation of this embodiment will be described.
【００２９】まず、送液ポンプ２３を停止した状態、つ
まり、冷却液２１を循環させていない状態では、可撓性
部材５０は、拡張変形しておらず、送液チューブ２５の
外周面にほぼ密着している。First, in the state where the liquid feed pump 23 is stopped, that is, in the state where the cooling liquid 21 is not circulated, the flexible member 50 is not expanded and deformed, and is almost on the outer peripheral surface of the liquid feed tube 25. It is in close contact.
【００３０】冷却装置３０を稼動し、冷却バッグ２２内
の冷却液２１を冷却する。冷却液２１が所定温度になる
と、送液ポンプ２３を作動する。The cooling device 30 is operated to cool the cooling liquid 21 in the cooling bag 22. When the cooling liquid 21 reaches a predetermined temperature, the liquid feed pump 23 is operated.
【００３１】冷却液２１の循環が始まると、図２（Ａ）
に示すように、送液チューブ２５内を流れる冷却液２１
は、側孔２７を通って、送液チューブ２５と可撓性部材
５０との間の隙間Ｓに流れ込む。導かれた冷却液２１の
圧力により、可撓性部材５０は、拡張変形を開始する。
定常状態に達すると、図２（Ｂ）に示すように、可撓性
部材５０は、凹部内面６１ａおよび圧力センサ７０の感
圧部分７１に圧接する。When the circulation of the cooling liquid 21 is started, FIG.
As shown in FIG.
Passes through the side hole 27 and flows into the gap S between the liquid supply tube 25 and the flexible member 50. The flexible member 50 starts to expand and deform due to the pressure of the cooling liquid 21 introduced.
When the steady state is reached, as shown in FIG. 2B, the flexible member 50 comes into pressure contact with the recess inner surface 61a and the pressure-sensitive portion 71 of the pressure sensor 70.
【００３２】ここで、可撓性部材５０の拡張範囲をケー
ス体６０の凹部６１により限定している。このため、仮
に、可撓性部材５０の肉厚の偏りなどに起因した不均一
な拡張変形が生じても、当該可撓性部材５０は、拡張す
る方向が凹部内面６１ａにガイドされて、不均一な拡張
が矯正される。その結果、可撓性部材５０は、凹部内面
６１ａに沿った形状を呈するように均一に拡張変形す
る。Here, the expansion range of the flexible member 50 is limited by the recess 61 of the case body 60. Therefore, even if uneven expansion deformation occurs due to uneven thickness of the flexible member 50, the expansion direction of the flexible member 50 is guided by the recess inner surface 61a, and the expansion direction is unsatisfactory. Uniform expansion is corrected. As a result, the flexible member 50 is uniformly expanded and deformed so as to have a shape along the recess inner surface 61a.
【００３３】送液チューブ２５と拡張した可撓性部材５
０との間の隙間Ｓでは冷却液２１の流れがほとんどない
ため、パスカルの原理により、可撓性部材５０から凹部
内面６１ａに向かう方向に作用する拡張圧Ｐは、どの部
位でもほぼ等しくなる。したがって、定常状態において
は、可撓性部材５０は、同じ拡張圧Ｐで、凹部内面６１
ａおよび圧力センサ７０の感圧部分７１に圧接する。圧
力センサ７０は、この拡張圧Ｐを検出し、コントローラ
４２に出力する。Liquid feed tube 25 and expanded flexible member 5
Since there is almost no flow of the cooling liquid 21 in the gap S between 0 and 0, the expansion pressure P that acts in the direction from the flexible member 50 toward the recess inner surface 61a is almost equal at any part according to Pascal's principle. Therefore, in the steady state, the flexible member 50 is subjected to the same expansion pressure P and the inner surface 61 of the recess.
a and the pressure-sensitive portion 71 of the pressure sensor 70. The pressure sensor 70 detects this expansion pressure P and outputs it to the controller 42.
【００３４】拡張圧Ｐが所定範囲内にあるときには、コ
ントローラ４２は、冷却液２１が正常に循環しているこ
とを認識する。When the expansion pressure P is within the predetermined range, the controller 42 recognizes that the cooling liquid 21 is normally circulating.
【００３５】循環回路２０において、送液チューブ２５
の折れや、流路の閉塞などが発生すると、送液チューブ
２５内の冷却液圧力が上昇する。可撓性部材５０は凹部
内面６１ａに圧接したままであるため、冷却液２１の圧
力上昇に伴ない、可撓性部材５０の拡張圧Ｐが上昇す
る。所定範囲以上の拡張圧Ｐが検出されると、コントロ
ーラ４２は、冷却液圧力が異常上昇したことを認識し、
その旨を報知する。具体的には、ディスプレイ４３にエ
ラーを表示したり、警報音を発したりする。コントロー
ラ４２はさらに、停止信号または流量を減じる信号を送
液ポンプ２３に出力する。これにより、冷却液圧力の異
常上昇に対する適切な対策を速やかに講じることができ
る。In the circulation circuit 20, the liquid feeding tube 25
When the breakage occurs or the flow path is blocked, the pressure of the cooling liquid in the liquid feeding tube 25 increases. Since the flexible member 50 remains pressed against the inner surface 61a of the recess, the expansion pressure P of the flexible member 50 increases as the pressure of the cooling liquid 21 increases. When the expansion pressure P above the predetermined range is detected, the controller 42 recognizes that the coolant pressure has abnormally increased,
Notify to that effect. Specifically, an error is displayed on the display 43 or an alarm sound is emitted. The controller 42 further outputs a stop signal or a signal for reducing the flow rate to the liquid delivery pump 23. As a result, it is possible to promptly take appropriate measures against the abnormal increase in the coolant pressure.
【００３６】循環回路２０の耐圧限界値を超える前に冷
却液圧力の異常上昇に対する対策が働くため、冷却バッ
グ２２、治療装置２４内の水路、チューブ２５、２６の
破損を未然に防ぐことができる。また、可撓性部材５０
は凹部６１の大きさ以上に拡張変形することが規制され
るため、冷却液圧力が異常上昇したときでも、可撓性部
材５０の破裂が防止される。Since the countermeasure against the abnormal rise of the coolant pressure works before the pressure limit value of the circulation circuit 20 is exceeded, damage to the cooling bag 22, the water channels in the treatment device 24, and the tubes 25 and 26 can be prevented. . In addition, the flexible member 50
Since it is restricted from expanding and deforming beyond the size of the recess 61, the rupture of the flexible member 50 is prevented even when the coolant pressure rises abnormally.
【００３７】一方、循環回路２０の切断や破損などによ
り冷却液漏れが発生したり、送液ポンプ２３が故障した
りすると、送液チューブ２５内の冷却液圧力が低下し、
可撓性部材５０の拡張圧Ｐも低下する。冷却液２１の圧
力がさらに低下すると、可撓性部材５０は、もはや拡張
できずに、圧力センサ７０の感圧部分７１に接触しなく
なる。所定範囲以下の拡張圧Ｐ（ゼロを含む）が検出さ
れると、コントローラ４２は、冷却液圧力が異常低下し
たことを認識し、ディスプレイ４３にエラーを表示す
る。コントローラ４２はさらに、停止信号を送液ポンプ
２３に出力する。これにより、冷却液圧力の異常低下に
対する適切な対策を速やかに講じることができる。On the other hand, if the cooling liquid leaks due to disconnection or breakage of the circulation circuit 20 or the liquid supply pump 23 fails, the pressure of the cooling liquid in the liquid supply tube 25 decreases,
The expansion pressure P of the flexible member 50 also decreases. When the pressure of the cooling liquid 21 is further reduced, the flexible member 50 can no longer expand and comes into contact with the pressure-sensitive portion 71 of the pressure sensor 70. When the expansion pressure P (including zero) equal to or lower than the predetermined range is detected, the controller 42 recognizes that the coolant pressure has abnormally decreased and displays an error on the display 43. The controller 42 further outputs a stop signal to the liquid delivery pump 23. With this, it is possible to promptly take appropriate measures against the abnormal decrease in the coolant pressure.
【００３８】上述したように、可撓性部材５０の拡張範
囲をケース体６０の凹部６１により限定していることか
ら、可撓性部材５０に偏肉などによる不均一な拡張変形
が生じても、ケース体６０の凹部６１の内面６１ａに圧
接することにより可撓性部材５０の不均一な拡張が矯正
され、当該可撓性部材５０の拡張圧Ｐを圧力センサ７０
に確実に伝達することができる。これにより冷却液２１
の圧力を正確に検出でき、異常圧力に対して適切な対策
を迅速に講じることが可能となる。可撓性部材５０が凹
部内面６１ａに圧接することにより、冷却液圧力が高ま
っても、当該可撓性部材の破裂が防止される。また、冷
却液２１の圧力を可撓性部材５０の拡張圧Ｐに変換して
検出しているため、送液チューブ２５および可撓性部材
５０の内部を外界から遮断し、冷却液２１に非接触の状
態で、冷却液圧力を監視できる。As described above, since the expansion range of the flexible member 50 is limited by the recess 61 of the case body 60, even if the flexible member 50 is unevenly deformed due to uneven thickness or the like. The non-uniform expansion of the flexible member 50 is corrected by pressing the inner surface 61a of the recess 61 of the case body 60, and the expansion pressure P of the flexible member 50 is detected by the pressure sensor 70.
Can be reliably transmitted. As a result, the cooling liquid 21
The pressure of can be accurately detected, and appropriate measures against abnormal pressure can be promptly taken. By pressing the flexible member 50 against the inner surface 61a of the recess, even if the coolant pressure increases, the flexible member is prevented from bursting. Further, since the pressure of the cooling liquid 21 is converted into the expansion pressure P of the flexible member 50 and detected, the insides of the liquid feeding tube 25 and the flexible member 50 are shielded from the outside world, and the cooling liquid 21 is not exposed. The coolant pressure can be monitored in contact.
【００３９】さらに、可撓性部材５０は冷却液圧力によ
る拡張変形量が送液チューブ２５よりも大きいので、冷
却液圧力の変化による変形が送液チューブ２５の変形よ
りも敏感に現れ、この部位で冷却液圧力を確実に検出で
きる。しかも、チューブ形状を有する可撓性部材５０を
用いているため、当該可撓性部材５０はその全周にわた
って拡張する。このため、可撓性部材５０が取り付けら
れた送液チューブ２５をケース体６０に取り付ける際
に、側孔２７を圧力センサ７０に向けるというような煩
雑な作業や構造が必要にならない。したがって、可撓性
部材５０をケース体６０で覆うという取り扱いが容易で
簡素な構造によって、一定の圧力範囲内で冷却液２１が
流れていることを監視できる。Further, since the amount of expansion deformation of the flexible member 50 due to the cooling liquid pressure is larger than that of the liquid feeding tube 25, the deformation due to the change of the cooling liquid pressure appears more sensitively than the deformation of the liquid feeding tube 25. Can reliably detect the coolant pressure. Moreover, since the flexible member 50 having the tube shape is used, the flexible member 50 expands over the entire circumference. For this reason, when attaching the liquid feeding tube 25 to which the flexible member 50 is attached to the case body 60, it is not necessary to perform a complicated work or structure such as pointing the side hole 27 toward the pressure sensor 70. Therefore, it is possible to monitor the flow of the cooling liquid 21 within a certain pressure range by a simple structure that covers the flexible member 50 with the case body 60 and is easy to handle.
【００４０】チューブ形状の可撓性部材５０を用いたの
で、送液チューブ２５の全周を側孔２７を含むように簡
単に覆うことができ、チューブ状可撓性部材５０のいず
れの周方向においても冷却液圧力を確実に検出できる。Since the tube-shaped flexible member 50 is used, the entire circumference of the liquid feeding tube 25 can be easily covered so as to include the side hole 27, and any circumferential direction of the tubular flexible member 50 can be obtained. Even in the above, the coolant pressure can be reliably detected.
【００４１】冷却液２１に直接接触する送液チューブ２
５および可撓性部材５０をディスポーザブル部とし、圧
力センサ７０およびケース体６０をリユーザブル部分と
することができ、圧力センサ７０およびケース体６０を
再使用できるので経済的な流体圧力検出装置４０とな
る。Liquid-feeding tube 2 in direct contact with the cooling liquid 21
5 and the flexible member 50 can be used as a disposable part, and the pressure sensor 70 and the case body 60 can be used as a reusable part, and the pressure sensor 70 and the case body 60 can be reused, so that an economical fluid pressure detection device 40 can be obtained. .
【００４２】また、送液チューブ２５および可撓性部材
５０の内部を外界から遮断し、冷却液２１に非接触の状
態で冷却液圧力を監視できるため、医療分野に適用して
好適な流体圧力検出装置４０となる。Also, the pressure of the cooling liquid can be monitored in a state where it is in non-contact with the cooling liquid 21 by shutting off the inside of the liquid feeding tube 25 and the flexible member 50 from the outside, so that the fluid pressure suitable for the medical field is suitable. It becomes the detection device 40.
【００４３】本発明は、上述した実施形態に限定される
ものではなく、適宜改変することが可能である。The present invention is not limited to the above-mentioned embodiments, but can be modified as appropriate.
【００４４】例えば、ケース体６０の凹部６１の形状
は、図２に示された形状に限定されるものではなく、可
撓性部材５０の拡張範囲を限定する機能を有する限りに
おいて、適宜の形状を採用し得る。但し、可撓性部材５
０を傷つけることがないように、球体や楕円体などの滑
らかな内面形状を有するのが好ましい。また、拡張変形
した可撓性部材５０の拡張圧Ｐはどの部位でもほぼ等し
いため、上下ケース６２、６３の窪み６２ａ、６３ａは
同じ形状である必要はなく、非対称な形状でもよい。例
えば、圧力センサ７０を取り付ける側の上ケース６２に
は窪み６２ａが必要であるが、下ケース６３における可
撓性部材５０を保持する面を平坦面に形成してもよい。For example, the shape of the recess 61 of the case body 60 is not limited to the shape shown in FIG. 2, but may be any suitable shape as long as it has a function of limiting the expansion range of the flexible member 50. Can be adopted. However, the flexible member 5
It is preferable to have a smooth inner surface shape such as a sphere or an ellipsoid so as not to damage 0. Further, since the expansion pressure P of the expanded and deformed flexible member 50 is almost equal in all parts, the depressions 62a and 63a of the upper and lower cases 62 and 63 do not have to have the same shape, and may have asymmetrical shapes. For example, the upper case 62 on the side where the pressure sensor 70 is attached needs to have the depression 62a, but the surface of the lower case 63 that holds the flexible member 50 may be formed to be flat.
【００４５】また、ケース体６０は、開閉自在なものに
限定されず、例えば、分離した２つのケース体を突き合
せて送液チューブ２５および可撓性部材５０の部分を挟
み込む形態でもよい。さらに、図５に示すように、ブロ
ック状のケース体７５に、送液チューブ２５および可撓
性部材５０の部分を差し込む差込口７６と、差込口７６
に連通する中空部７７とを形成し、差込口７６をブロッ
ク７８により閉塞するようにしてもよい。ブロック７８
は、差込口７６に対して、取り外し自在に固定される。
このケース体７５にあっては、中空部７７およびブロッ
ク７８により、可撓性部材５０の拡張範囲を限定する凹
部が形成されている。Further, the case body 60 is not limited to the one that can be opened and closed, and may be, for example, a form in which two separated case bodies are butted against each other to sandwich the liquid feed tube 25 and the flexible member 50. Further, as shown in FIG. 5, a block-shaped case body 75 is provided with an insertion port 76 into which the liquid feed tube 25 and the flexible member 50 are inserted, and an insertion port 76.
It is also possible to form a hollow portion 77 communicating with the above and to close the insertion port 76 with a block 78. Block 78
Is detachably fixed to the insertion port 76.
In the case body 75, the hollow portion 77 and the block 78 form a concave portion that limits the expansion range of the flexible member 50.
【００４６】さらに、冷却液２１に直接接触する送液チ
ューブ２５および可撓性部材５０はディスポーザブル
で、１回限りの使用であるため、外界から遮断した状態
が維持される。したがって、実施形態に示した医療分野
の他に、食品分野などにも適用して好適な流体圧力検出
装置４０となる。Further, since the liquid feeding tube 25 and the flexible member 50 which are in direct contact with the cooling liquid 21 are disposable and can be used only once, the state of being shielded from the external environment is maintained. Therefore, in addition to the medical field shown in the embodiment, the fluid pressure detection device 40 is suitable for application to the food field and the like.
【００４７】また、流体圧力検出装置４０を冷却液循環
システム１０に使用した場合について説明したが、加熱
や濾過のための種々の流体が流れる管体に広く適用でき
ることは言うまでもない。Further, although the case where the fluid pressure detection device 40 is used in the cooling liquid circulation system 10 has been described, it goes without saying that the fluid pressure detection device 40 can be widely applied to pipes through which various fluids for heating and filtration flow.
【００４８】[0048]
【発明の効果】上記のように構成した本発明は以下の効
果を奏する。The present invention configured as described above has the following effects.
【００４９】請求項１に記載の発明によれば、可撓性部
材の拡張範囲をケース体の凹部により限定していること
から、可撓性部材に偏肉などによる不均一な拡張変形が
生じても、ケース体の凹部の内面に圧接することにより
可撓性部材の不均一な拡張が矯正され、当該可撓性部材
の拡張圧を圧力センサに確実に伝達して流体の圧力を正
確に検出できる。可撓性部材が凹部内面に圧接すること
により、流体の圧力が高まっても、当該可撓性部材の破
裂が防止される。また、流体の圧力を可撓性部材の拡張
圧に変換して検出しているため、流体に非接触の状態
で、流体圧力を監視できる。According to the first aspect of the invention, since the expansion range of the flexible member is limited by the concave portion of the case body, uneven expansion deformation due to uneven thickness occurs in the flexible member. However, by pressing the inner surface of the concave portion of the case body, uneven expansion of the flexible member is corrected, and the expansion pressure of the flexible member is reliably transmitted to the pressure sensor to accurately measure the fluid pressure. Can be detected. By pressing the flexible member against the inner surface of the recess, even if the pressure of the fluid increases, the rupture of the flexible member is prevented. Further, since the pressure of the fluid is converted into the expansion pressure of the flexible member for detection, the fluid pressure can be monitored in a state of not being in contact with the fluid.
【００５０】さらに、可撓性部材は流体の圧力による拡
張変形量が管体よりも大きいので、この部位で流体圧力
を確実に検出できる。しかも、可撓性部材はその全周に
わたって拡張するため、可撓性部材が取り付けられた管
体をケース体に取り付ける際に、側孔を圧力センサに向
けるというような煩雑な作業や構造が必要にならず、可
撓性部材をケース体で覆うという取り扱いが容易で簡素
な構造によって、流体圧力を監視できる。Furthermore, since the amount of expansion deformation of the flexible member due to the fluid pressure is larger than that of the tubular body, the fluid pressure can be reliably detected at this portion. Moreover, since the flexible member expands over the entire circumference, when the tube body to which the flexible member is attached is attached to the case body, complicated work or structure such as directing the side hole toward the pressure sensor is required. In addition, the fluid pressure can be monitored by a simple structure that covers the flexible member with the case body and is easy to handle.
【００５１】請求項２に記載の発明によれば、一定の圧
力範囲内で流体が流れていることを監視でき、異常圧力
に対して適切な対策を迅速に講じることが可能となる。According to the second aspect of the invention, it is possible to monitor that the fluid is flowing within a certain pressure range, and it is possible to quickly take appropriate measures against abnormal pressure.
【００５２】請求項３に記載の発明によれば、チューブ
形状の可撓性部材を用いることにより、管体の全周を側
孔を含むように簡単に覆うことができ、チューブ状可撓
性部材のいずれの周方向においても流体圧力を確実に検
出できる。According to the third aspect of the present invention, by using the tube-shaped flexible member, the entire circumference of the tubular body can be easily covered so as to include the side hole, and the tubular flexible member is provided. The fluid pressure can be reliably detected in any circumferential direction of the member.
【００５３】請求項４に記載の発明によれば、流体に直
接接触する管体および可撓性部材をディスポーザブル部
とし、圧力センサおよびケース体をリユーザブル部分と
することができ、圧力センサおよびケース体を再使用で
きるので経済的な流体圧力検出装置となる。According to the fourth aspect of the present invention, the tubular body and the flexible member that come into direct contact with the fluid can be used as the disposable portion, and the pressure sensor and the case body can be used as the reusable portion. Since it can be reused, it becomes an economical fluid pressure detecting device.
【００５４】請求項５に記載の発明によれば、管体およ
び可撓性部材の内部を外界から遮断し、流体に非接触の
状態で流体圧力を監視できるため、医療分野や食品分野
などに適用して好適な流体圧力検出装置となる。According to the fifth aspect of the present invention, the inside of the tubular body and the flexible member can be shielded from the outside and the fluid pressure can be monitored in a non-contact state with the fluid. It becomes a suitable fluid pressure detection device when applied.
【図１】 本発明に係る流体圧力検出装置を組み込んだ
流体循環システムを示す概略構成図である。FIG. 1 is a schematic configuration diagram showing a fluid circulation system incorporating a fluid pressure detection device according to the present invention.
【図２】 図２（Ａ）（Ｂ）は、図１に示される圧力検
出部を示す断面図である。2 (A) and 2 (B) are cross-sectional views showing the pressure detection unit shown in FIG.
【図３】 送液チューブおよびチューブ形状を有する可
撓性部材を示す斜視図である。FIG. 3 is a perspective view showing a liquid feeding tube and a flexible member having a tube shape.
【図４】 図４（Ａ）（Ｂ）は、ケース体を示す斜視図
である。FIG. 4A and FIG. 4B are perspective views showing a case body.
【図５】 ケース体の改変例を示す斜視図である。FIG. 5 is a perspective view showing a modified example of the case body.
２１…冷却液（流体） ２４…治療装置 ２５…送液チューブ（管体） ２７…側孔 ４０…流体圧力検出装置 ４１…圧力検出部 ４２…コントローラ（判断部、報知部） ４３…ディスプレイ（報知部） ５０…可撓性部材 ６０、７５…ケース体 ６１…凹部 ６１ａ…凹部内面 ７０…圧力センサ ７１…感圧部分 Ｐ…拡張圧 21 ... Coolant (fluid) 24 ... Treatment device 25. Liquid transfer tube (tubular body) 27 ... Side hole 40 ... Fluid pressure detection device 41 ... Pressure detector 42 ... Controller (determination unit, notification unit) 43 ... Display (notification section) 50 ... Flexible member 60, 75 ... Case body 61 ... Recess 61a ... Inner surface of recess 70 ... Pressure sensor 71 ... Pressure sensitive part P ... Expansion pressure
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｇ０１Ｌ 7/00 Ｇ０１Ｌ 19/06 Ｚ 19/06 Ａ６１Ｂ 5/14 ３００Ｚ (72)発明者 上杉 武文 東京都渋谷区幡ヶ谷２丁目43番２号 オリ ンパス光学工業株式会社内 (72)発明者 晴山 典彦 東京都渋谷区幡ヶ谷２丁目43番２号 オリ ンパス光学工業株式会社内 (72)発明者 稲葉 誠 東京都渋谷区幡ヶ谷２丁目43番２号 オリ ンパス光学工業株式会社内 Ｆターム(参考） 2F055 AA05 BB20 CC01 DD11 EE11 EE25 FF43 GG11 HH05 4C038 TA10 4C077 AA05 AA13 BB01 BB02 EE01 EE03 HH02 HH03 HH13 JJ02 JJ03 JJ13 KK27 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) G01L 7/00 G01L 19/06 Z 19/06 A61B 5/14 300Z (72) Inventor Takefumi Uesugi Shibuya, Tokyo 2-43-2 Hatagaya-ku, Olympus Optical Co., Ltd. (72) Inventor Norihiko Haruyama 2-43-2 Hatagaya, Shibuya, Tokyo Olympus Optical Co., Ltd. (72) Inventor Makoto Inaba Shibuya, Tokyo 2-43-2, Hatagaya-ku, Olympus Optical Co., Ltd. F term (reference) 2F055 AA05 BB20 CC01 DD11 EE11 EE25 FF43 GG11 HH05 4C038 TA10 4C077 AA05 AA13 BB01 BB02 EE01 EE03 HH02 HH03 HH13 JJ13 JJ27
Claims (5)
の側孔と、 前記側孔が形成された前記管体の表面に設けられ、流体
の圧力により拡張変形自在な可撓性部材と、 前記可撓性部材の拡張範囲を限定する凹部が形成された
ケース体と、 前記凹部に臨むように前記ケース体に取り付けられ、前
記凹部の内面に圧接する前記可撓性部材の拡張圧を検出
する圧力センサと、を有し、 前記可撓性部材は、流体の圧力による拡張変形量が前記
管体よりも大きく、前記管体の全周を前記側孔を含むよ
うに覆ってなる流体圧力検出装置。1. A pipe body having a flow passage therein, at least one side hole formed in the pipe body and communicating with the flow passage, and provided on a surface of the pipe body in which the side hole is formed, A flexible member that can be expanded and deformed by the pressure of fluid, a case body in which a concave portion that limits the expansion range of the flexible member is formed, and a case member that is attached to the case body so as to face the concave portion. A pressure sensor that detects an expansion pressure of the flexible member that is in pressure contact with an inner surface of the flexible member, the expansion deformation amount of the flexible member due to the pressure of fluid is larger than that of the pipe body, A fluid pressure detecting device which covers the circumference so as to include the side hole.
所定範囲内にあるか否かを判断する判断部と、 検出した拡張圧が所定範囲外であるときに、その旨を報
知する報知部と、をさらに有する請求項１に記載の流体
圧力検出装置。2. A judgment unit for judging whether or not the expansion pressure detected by the pressure sensor is within a predetermined range, and a notification unit for notifying that the expansion pressure is outside the predetermined range. The fluid pressure detection device according to claim 1, further comprising:
るチューブ形状を有し、長手方向両端部が前記管体の外
面に取り付けられていることを特徴とする請求項１に記
載の流体圧力検出装置。3. The flexible member has a tube shape into which the tubular body is inserted, and both longitudinal ends thereof are attached to an outer surface of the tubular body. Fluid pressure detection device.
体は、前記圧力センサが取り付けられた前記ケース体に
対して、着脱自在に取り付けられることを特徴とする請
求項１に記載の流体圧力検出装置。4. The fluid according to claim 1, wherein the pipe body to which the flexible member is attached is detachably attached to the case body to which the pressure sensor is attached. Pressure detector.
は、外界から遮断されていることを特徴とする請求項１
に記載の流体圧力検出装置。5. The inside of the tubular body and the flexible member is shielded from the outside world.
The fluid pressure detection device according to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001199443A JP2003014571A (en) | 2001-06-29 | 2001-06-29 | Fluid pressure detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001199443A JP2003014571A (en) | 2001-06-29 | 2001-06-29 | Fluid pressure detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003014571A true JP2003014571A (en) | 2003-01-15 |
Family
ID=19036739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001199443A Pending JP2003014571A (en) | 2001-06-29 | 2001-06-29 | Fluid pressure detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003014571A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020069564A (en) * | 2001-02-26 | 2002-09-05 | 삼성전자 주식회사 | Apparatus for measuring a pressure of the fluid and method for measuring thereof and equipment for fabricating semiconductor device using thereof |
| JP2008058075A (en) * | 2006-08-30 | 2008-03-13 | Toyota Motor Corp | Pressure sensor |
| JP2009543070A (en) * | 2006-07-06 | 2009-12-03 | アールアイシー・インベストメンツ・エルエルシー | Sidestream gas sampling system with closed sampling circuit |
| DE102004025237B4 (en) * | 2003-09-08 | 2011-07-07 | Textilforschungsinstitut Thüringen-Vogtland e.V., 07973 | Textile pressure and tension sensor |
| JP2018179715A (en) * | 2017-04-11 | 2018-11-15 | 北陸電気工業株式会社 | Pulse pressure detection device |
| JP2020094836A (en) * | 2018-12-10 | 2020-06-18 | サーパス工業株式会社 | Flow channel unit, pressure detector, and manufacturing method for flow channel unit |
| JP2020534881A (en) * | 2017-09-28 | 2020-12-03 | テルモ株式会社 | Biological component collection system and circuit pressure acquisition method |
| CN112105402A (en) * | 2018-05-16 | 2020-12-18 | 日机装株式会社 | Pressure detector |
| WO2022209189A1 (en) * | 2021-03-29 | 2022-10-06 | ソニーグループ株式会社 | Pressure measurement method, control method, pressure measurement device and analysis device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5568035U (en) * | 1978-11-01 | 1980-05-10 | ||
| JPS5817529U (en) * | 1981-07-28 | 1983-02-03 | 日本鋼管株式会社 | Pressure extractor for measuring pressure inside powder and granule transport pipes |
| JPS5961734A (en) * | 1982-10-01 | 1984-04-09 | Toray Ind Inc | Fluid pressure measuring apparatus |
| JPH07333093A (en) * | 1994-06-03 | 1995-12-22 | Fresenius Ag | Device for measuring pressure of medium and method for measuring pressure using device thereof |
| JPH08247870A (en) * | 1995-03-07 | 1996-09-27 | Mineyama Seisakusho:Kk | Manometer |
| JPH10153505A (en) * | 1996-11-20 | 1998-06-09 | Fumio Utsue | Pressure measuring apparatus for fluid inside conduit |
-
2001
- 2001-06-29 JP JP2001199443A patent/JP2003014571A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5568035U (en) * | 1978-11-01 | 1980-05-10 | ||
| JPS5817529U (en) * | 1981-07-28 | 1983-02-03 | 日本鋼管株式会社 | Pressure extractor for measuring pressure inside powder and granule transport pipes |
| JPS5961734A (en) * | 1982-10-01 | 1984-04-09 | Toray Ind Inc | Fluid pressure measuring apparatus |
| JPH07333093A (en) * | 1994-06-03 | 1995-12-22 | Fresenius Ag | Device for measuring pressure of medium and method for measuring pressure using device thereof |
| JPH08247870A (en) * | 1995-03-07 | 1996-09-27 | Mineyama Seisakusho:Kk | Manometer |
| JPH10153505A (en) * | 1996-11-20 | 1998-06-09 | Fumio Utsue | Pressure measuring apparatus for fluid inside conduit |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020069564A (en) * | 2001-02-26 | 2002-09-05 | 삼성전자 주식회사 | Apparatus for measuring a pressure of the fluid and method for measuring thereof and equipment for fabricating semiconductor device using thereof |
| DE102004025237B4 (en) * | 2003-09-08 | 2011-07-07 | Textilforschungsinstitut Thüringen-Vogtland e.V., 07973 | Textile pressure and tension sensor |
| JP2009543070A (en) * | 2006-07-06 | 2009-12-03 | アールアイシー・インベストメンツ・エルエルシー | Sidestream gas sampling system with closed sampling circuit |
| EP2069747A4 (en) * | 2006-07-06 | 2015-12-16 | Ric Investments Llc | Sidestream gas sampling system with closed sample circuit |
| JP2008058075A (en) * | 2006-08-30 | 2008-03-13 | Toyota Motor Corp | Pressure sensor |
| JP2018179715A (en) * | 2017-04-11 | 2018-11-15 | 北陸電気工業株式会社 | Pulse pressure detection device |
| JP7133617B2 (en) | 2017-09-28 | 2022-09-08 | テルモ株式会社 | Biological component sampling system and circuit internal pressure acquisition method |
| JP2020534881A (en) * | 2017-09-28 | 2020-12-03 | テルモ株式会社 | Biological component collection system and circuit pressure acquisition method |
| CN112105402A (en) * | 2018-05-16 | 2020-12-18 | 日机装株式会社 | Pressure detector |
| CN112105402B (en) * | 2018-05-16 | 2023-05-05 | 日机装株式会社 | Pressure detector |
| JP2020094836A (en) * | 2018-12-10 | 2020-06-18 | サーパス工業株式会社 | Flow channel unit, pressure detector, and manufacturing method for flow channel unit |
| JP7104415B2 (en) | 2018-12-10 | 2022-07-21 | サーパス工業株式会社 | Flow path unit, pressure detector, and method of manufacturing the flow path unit |
| WO2022209189A1 (en) * | 2021-03-29 | 2022-10-06 | ソニーグループ株式会社 | Pressure measurement method, control method, pressure measurement device and analysis device |
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