JP2001013024A - Pressure measuring apparatus for extracorporeal circulation and circuit for extracorporeal circulation - Google Patents

Pressure measuring apparatus for extracorporeal circulation and circuit for extracorporeal circulation

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Publication number
JP2001013024A
JP2001013024A JP2000101737A JP2000101737A JP2001013024A JP 2001013024 A JP2001013024 A JP 2001013024A JP 2000101737 A JP2000101737 A JP 2000101737A JP 2000101737 A JP2000101737 A JP 2000101737A JP 2001013024 A JP2001013024 A JP 2001013024A
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Japan
Prior art keywords
pressure
connector
receiving portion
thin film
amplifier
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Pending
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JP2000101737A
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Japanese (ja)
Inventor
Michio Abe
Takayuki Abe
Hiromi Ikada
Mitsutoshi Sato
Takeshi Shibata
光寿 佐藤
道夫 安部
猛 柴田
宏臣 筏
隆行 阿部
Original Assignee
Kawasumi Lab Inc
川澄化学工業株式会社
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Priority to JP11-119853 priority Critical
Priority to JP11985399 priority
Application filed by Kawasumi Lab Inc, 川澄化学工業株式会社 filed Critical Kawasumi Lab Inc
Priority to JP2000101737A priority patent/JP2001013024A/en
Publication of JP2001013024A publication Critical patent/JP2001013024A/en
Application status is Pending legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To obtain a pressure measuring apparatus by which the failure of a bloodsream in its extracorporeal circulation and a drop in the blood pressure of a patient can be sensed quickly and which can comply with them at an early stage by a method wherein a pressure receiving part is arranged, via a thin membrane, in the upper part of a liquid flow passage and the pressure receiving part is connected to an amplifier or the like via a lead wire or the like. SOLUTION: A pressure receiving part 6 is arranged, via a thin membrane 5, in the upper part of a liquid flow passage 2c in a body 2. Then, an amplifier is connected to the pressure receiving part 6 via lead wires 7. Alternatively, a transmitter is connected to the pressure receiving part 6, and the pressure data signal of the pressure receiving part 6 is transmitted to an external reception part by radio by the transmitter. Alternatively, a connector in which a pressure sensor is arranged is mounted on the pressure receiving part 6 via a tubular body, and the amplifier is mounted on the connector. Alternatively, a pressure gage is connected to the pressure receiving part 6 via the tubular body and the connector. In addition, this pressure measuring apparatus 1 is constituted of a disposable part 1A and a pressure monitoring part 1B, and it can be used by being divided respectively. The disposable part 1A is a part which is thrown away after one use, and the pressure monitoring part 1B can be attached to, and removed from, the disposable part 1A so as to be used any number of times.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は体外循環時の血流不全や患者の血圧低下を迅速に感知し、早期対応を可能とする体外循環用圧力計測装置及び体外循環用回路の改良に関する。 The present invention relates to quickly sense the pressure drop in blood flow failure and patient during extracorporeal circulation, an improvement of extracorporeal circulation pressure measuring device and the extracorporeal circulation circuit to enable quick response.

【0002】 [0002]

【従来の技術及び発明が解決しようとする課題】体外循環時の血流不全や患者の血圧低下を感知する方法としては、血液回路のシャント接続部と血液ポンプとの間に圧力計測装置を設けることで対応している。 The method of sensing BACKGROUND OF INVENTION Problems to be Solved] hypotension blood flow failure and patient during extracorporeal circulation, provided the pressure measuring device between the shunt connection and the blood pump of the blood circuit It has been dealt with by. 具体的な計測手段として例えば次の3つの方法が実施されている。 As specific measuring means such as the following three methods have been implemented. 軟らかい断面が楕円状に加工されたチューブのつぶれ具合により陰圧を測定するいわゆる陰圧ピロー手段、 枝管をつけて直接圧力計につなぐ手段、 枝管の先端を閉じて、枝管内の空気の圧縮具合により圧力を算出する手段(特開平11−4812号参照)、 So-called negative pressure pillow means soft section measures the negative pressure by degree collapse of the tube which is processed into an elliptical shape, means for connecting directly to a pressure gauge with a branch pipe, closes the tip of the branch pipe, the branch pipe of the air It means for calculating the pressure by the compression degree (see JP-a-11-4812),
等があるが、しかしながら前記は(a)通常−300 There are equal, however it said (a) Normal -300
mmHgくらいになると、血液ポンプを止める仕組みになっているが、圧力は正確に計測できない。 And become much mmHg, but has a mechanism to stop the blood pump, pressure can not be accurately measured. またピロー内のウェルダー部分で血液の滞留が発生する。 The retention of the blood occurs in the welder part of the pillow. また前記は(b)圧力は正確に計測できるが枝管に流入した血液がクロッティングするおそれがある。 The above is likely to (b) the pressure is accurately can measure flowing into the branch pipe blood clotting. 前記は(c) Wherein the (c)
と同様、枝管内に流入した血液がクロッティングするおそれがある。 Similarly, there is a possibility that blood which has flowed into the branch vessel to clotting. 等の各々精度が悪かったり、クロッティングのおそれ等の問題がある。 Each accuracy or poor etc., there are problems of a risk such as clotting. そこで本発明者らは以上の課題を解決するために鋭意検討を重ねた結果次の発明に到達した。 The present inventors have reached the intensive studies superimposed results following invention to solve the above problems.

【0003】 [0003]

【課題を解決するための手段】[1]本発明は、本体2 Means for Solving the Problems] [1] The present invention includes a main body 2
の液体流路2cの上部に薄膜5を介して受圧部6を配置し、次の(a)から(d)のうちいずれかの手段を含む圧力計測装置1を提供する。 Of the upper part of the liquid flow path 2c via the thin film 5 arranged pressure receiving portion 6, to provide a pressure measuring device 1 comprising any of the means of the from the following (a) (d). (a)前記受圧部6にリード線7を介してアンプ9に接続する手段、(b)前記受圧部6に発信器14を接続して、発信器14により受圧部6の圧力データ信号を無線で外部の受信部15に送信する手段、(c)前記受圧部6に管状体を介して圧力センサを配置したコネクタ8を装着し、該コネクタ8にアンプ9を装着する手段、 (A) means for connecting to the amplifier 9 via the lead wires 7 on the pressure receiving portion 6, (b) connecting the transmitter 14 to the pressure receiving portion 6, the wireless pressure data signal of the pressure receiving portion 6 by transmitter 14 in means for transmitting to the external receiving unit 15, (c) through the tubular body to said pressure receiving portion 6 fitted with a connector 8 arranged a pressure sensor, means for mounting the amplifier 9 to the connector 8,
(d)前記受圧部6に管状体とコネクタ8を介して圧力計に接続する手段、[2]本発明は、本体2の液体流路2cの上部に薄膜5を配置し、次の(e)から(f)のうちいずれかの手段を含む圧力計測装置1Dを提供する。 (D) means for connecting to the pressure gauge through the tubular body and the connector 8 to the pressure receiving portion 6, [2] The present invention is a thin film 5 is placed on top of the body 2 the liquid flow path 2c, the following (e ) from among the (f) to provide a pressure measurement device 1D contain any means. (e)前記本体2に管状体45を介して圧力センサ50を配置したコネクタ8を装着し、該コネクタ8にアンプ9を装着する手段、(f)前記本体2に管状体45 (E) via said tubular body 45 to the main body 2 equipped with a connector 8 arranged a pressure sensor 50, means for attaching the amplifier 9 to the connector 8, the tubular body 45 (f) said body 2
とコネクタ8を介して圧力計に接続する手段、[3]本発明は、前記圧力計測装置1(1D)はディスポ部1A It means for connecting to the pressure gauge through the connector 8 and, [3] the present invention, the pressure measuring apparatus 1 (1D) is disposable portion 1A
と圧力モニタ部1Bからなり、前記ディスポ部1Aと圧力モニタ部1Bは次の(a)から(f)のいずれかの組み合わせよりなる[1]ないし[2]に記載の圧力計測装置1(1D)を提供する。 And it consists pressure monitor 1B, the disposable portion 1A and the pressure monitor unit 1B is composed of any combination of the following from (a) (f) [1] to [2] pressure measuring apparatus 1 (1D according to )I will provide a. (a)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、リード線7、アンプ9、(b)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、発信器14、受信部15、(c)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、圧力センサ、コネクタ8、アンプ9、(d)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、コネクタ8、圧力計、(e)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが管状体45、圧力センサ50、 (A) disposable portion 1A is the main body 2, the thin film 5, the pressure monitor 1B is pressure-receiving portion 6, the lead wire 7, the amplifier 9, (b) a disposable unit 1A is the main body 2, the thin film 5, the pressure monitor 1B is pressure receiving portion 6 , transmitter 14, receiver 15, (c) a disposable unit 1A is the main body 2, the thin film 5, the pressure receiving portion 6 a pressure monitor unit 1B, a pressure sensor, a connector 8, amplifier 9, (d) a disposable unit 1A is the main body 2, thin film 5, the pressure receiving portion 6 a pressure monitor unit 1B, the connector 8, pressure gauge, (e) a disposable unit 1A is the main body 2, the thin film 5, the pressure monitor 1B tubular body 45, a pressure sensor 50,
コネクタ8、アンプ9、(f)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが管状体45、コネクタ8、圧力計、[4]本発明は、動脈側シャント23と送液ポンプ26間の動脈側回路22の途中に[1]ないし[3]に記載の圧力計測装置1(1D)を装着した体外循環用回路を提供する。 Connector 8, amplifier 9, (f) disposable portion 1A is the main body 2, the thin film 5, the pressure monitor 1B tubular body 45, the connector 8, pressure gauge, [4] The present invention, arterial shunts 23 and liquid feed pump 26 It [1] in the middle of the arterial circuit 22 between providing extracorporeal circulation circuit equipped with a pressure measuring device 1 (1D) according to [3].

【0004】 [0004]

【発明の実施の形態】図1は本発明の体外循環用回路2 DESCRIPTION OF THE PREFERRED EMBODIMENTS Figure 1 is an extracorporeal circulation circuit 2 of the present invention
1の概略図で、図2は図1の体外循環用回路21に装着する圧力計測装置1の一実施例を示す拡大断面図である。 A schematic diagram of 1, FIG. 2 is an enlarged sectional view showing an embodiment of a pressure measurement device 1 to be attached to the extracorporeal circulation circuit 21 of FIG. 1. 体外循環用回路21は動脈側シャント23と送液ポンプ26間の動脈側回路22の途中に圧力計測装置1が配置されている。 Extracorporeal circulation circuit 21 is a pressure measuring device 1 in the middle of the arterial circuit 22 between the artery side shunt 23 and liquid feed pump 26 is disposed. 圧力計測装置1は図2に示すように本体2と薄膜5と受圧部6より構成されている。 Pressure measuring apparatus 1 is constituted of a main body 2 and the thin film 5 and the pressure receiving portion 6 as shown in FIG.

【0005】本体2は液体流路2cの上部が開口し、上部の側部に溝2aと鍔2bが形成されている。 [0005] body 2 upper opening of the liquid flow path 2c, the groove 2a and a flange 2b at the top side is formed. アダプタ3は上部と下部が開口し、上部の側部に鍔3b、下部の側部に溝3aが形成されている。 Adapter 33 open at top and bottom, the flange 3b on the top side, the groove 3a in the lower part of the side is formed. コネクタ4は内筒4c Connector 4 is the inner cylinder 4c
の上部と下部の中央が開口するとともに上部に内側に溝4aを形成した外筒4bが形成され、内筒4cの下部に受圧部6が装着されている。 The top and bottom of the center is formed outer tube 4b having grooves 4a on the inside at the top with an opening, the pressure receiving portion 6 at the bottom of the inner cylinder 4c is mounted. 本体2の鍔2bの内側にアダプタ3の溝3aを装着するとともに本体2の溝2aとアダプタ3の下部の間に薄膜5が挟持される。 Thin film 5 is sandwiched between the bottom of the groove 2a and the adapter 3 of the body 2 with mounting grooves 3a of the adapter 3 to the inside of the flange 2b of the body 2. コネクタ4の内筒4cをアダプタ3の内部に装着するとともにコネクタ4の溝4aにアダプタ3の鍔3bを装着する。 The inner cylinder 4c of the connector 4 for mounting the flange 3b of the adapter 3 in the groove 4a of the connector 4 while mounted within the adapter 3. 受圧部6はリード線7、コネクタ8を介してアンプ9に接続される。 The pressure receiving portion 6 is connected to the amplifier 9 via the lead wire 7, the connector 8.

【0006】さらに補足すると本体2の上部に小孔のような開口部を形成し、この開口部に軟らかくかつ極薄の薄膜5を気密状態を保持するように装着する。 [0006] With further supplemented to form an opening such as a small hole in the top of the main body 2 is mounted a thin film 5 of soft and extremely thin in the opening so as to hold the airtight state. 開口部の形状及び開口部への薄膜5の装着の仕方は本体2内を流れる液体が乱流とならないようにするのが良い。 How the mounting of a thin film 5 of the shape and the opening of the opening is good to allow liquid flowing in the main body 2 does not become turbulent. またその他の構造として、開口部に薄膜5を直接接着あるいは溶着することもできる。 As other structures, the film 5 may be directly bonded or welded to the opening. 本体2の上部とアダプタ3の下部の装着並びにアダプタ3とコネクタ4の装着形状は図2に示したものに限定されず、本体2とアダプタ3は薄膜5を挟持できる形状、アダプタ3とコネクタ4は脱着できる形状であれば何でも採用することができる。 Mounting shape of the mounting and adapter 3 and connector 4 at the bottom of the top and the adapter 3 of the body 2 is not limited to that shown in FIG. 2, shaped body 2 and the adapter 3 is capable of clamping the thin film 5, the adapter 3 and connector 4 it is possible to use anything as long as a shape that can be desorption. またアダプタ3とコネクタ4は気密保持構造にすることで陰圧も測定できる。 The adapter 3 and connector 4 is negative pressure can also be measured by an airtight holding structure. また薄膜5は例えばシリコーン等のような軟らかい薄膜で圧力を圧力センサーに伝導できるものであれば何でも使用することができる。 The film 5 can be used as many as long as it can transfer to the pressure sensor the pressure in soft thin film such as, for example, silicone or the like.

【0007】図3は受圧部6内に組み込む圧力センサ1 [0007] Figure 3 is a pressure sensor 1 incorporated into a pressure receiving section 6
0の概略平面図で、図4は図3のA矢視図、図5は図3 A schematic plan view of 0, 4 A arrow view of FIG. 3, FIG. 5 3
のセンサ回路図である。 A sensor circuit diagram. 圧力センサ10は半導体チップにより構成され、台座10a上にシリコン製のダイヤフラム部11が装着され、ダイヤフラム11上は複数の抵抗12(R)で、ブリッジを構成するゲージ部となっている。 The pressure sensor 10 is constituted by a semiconductor chip, a silicon diaphragm portion 11 is mounted on a pedestal 10a, on the diaphragm 11 by a plurality of resistors 12 (R), it has a gauge portion constituting the bridge. このゲージ部に印加された圧力がゲージ部に歪みを生じさせ、各抵抗12(R)の抵抗値が変化し、この変化が出力電圧となって電気信号に変換される。 The applied pressure on the gauge portion causes strain in the gage section, the resistance value changes of the resistors 12 (R), is converted into an electric signal the variation as an output voltage. また圧力センサ10の被測定対象と接しない面は大気と連通し大気圧に保持され、測定圧は大気圧を基準として相対圧で表示される。 Also the surface not in contact with the object to be measured of the pressure sensor 10 is held at atmospheric pressure communicates with the atmosphere, measured pressure is displayed at a relative pressure of atmospheric pressure as a reference. また圧力センサ10の測定圧力のバラツキを補償するため、リード線7を台座10aの端部で結線し、受圧部6間で圧力測定の特性が均一になるように別の抵抗体で調整する。 Also in order to compensate for variations in the measured pressure of the pressure sensor 10, and connect the lead wire 7 at the end of the pedestal 10a, to adjust in a different resistor so as to uniform the characteristics of the pressure measured between the pressure receiving portion 6. 他方、受圧部6で圧力センサ1 On the other hand, the pressure sensor 1 in the pressure receiving portion 6
0に圧力が加わると、アンプ9からの駆動用電圧との間で変化が惹起され、電気信号に変換されアンプ9より出力される。 When 0 to applied pressure, the change between the driving voltage from the amplifier 9 is raised, it is converted into an electric signal output from the amplifier 9. 本発明の圧力計測装置1では印加圧力DC. In the pressure measuring apparatus 1 of the present invention applied pressure DC.
5Vで圧力は最大300mmHgまで測定でき測定範囲は±300mmHgである。 Pressure 5V measuring range can be measured up to 300mmHg is ± 300mmHg.

【0008】また圧力計測装置1の本体2は、動脈側回路22の上部に開口部を形成して、動脈側回路22をそのまま本体2として使用しても良いし、動脈側回路22 [0008] body 2 of the pressure measuring apparatus 1, openings are formed in the upper portion of the artery side circuit 22, the arterial circuit 22 to may be directly used as a main body 2, arterial circuit 22
と別部品の管状体を本体2として、この管状体(本体2)の両側に動脈側回路22を接続するようにしても良い。 And another component tubular body as the body 2, may be connected to the artery side circuit 22 on both sides of the tubular body (body 2). また圧力計測装置1では薄膜5と受圧部6の接触状態は(a)密着状態でも良いし、薄膜5と受圧部6の間に(b)少量の空気または(c)液体(生理食塩水、 The contact state of the pressure measuring apparatus 1 in the thin film 5 and the pressure receiving portion 6 may be (a) close contact, between the thin film 5 and the pressure receiving portion 6 (b) a small amount of air or (c) a liquid (physiological saline,
水)等の流体を介在させても良い。 The fluid of water) or the like may be interposed. (b)よりも(c) (B) than (c)
のほうが薄膜5の圧力を受圧部6に伝達しやすいので好ましい。 Preferred because more of easily transmitting the pressure of the film 5 to the pressure receiving portion 6. また圧力計測装置1では受圧部6にリード線7 The lead wire to the pressure receiving portion 6 in the pressure measuring apparatus 1 7
を接続する代わりに中空の管状体を接続し、コネクタ8 Connect the hollow tubular body, instead of connecting the connector 8
側に圧力センサ10を配置し、アンプ9に接続しても良い。 The pressure sensor 10 is arranged on the side, it may be connected to the amplifier 9. 圧力センサ10は半導体に限定されず、その他の材料でも使用できる。 The pressure sensor 10 is not limited to the semiconductor, it may be used in other materials. またコネクタ8側に圧力センサ10 The pressure sensor 10 to the connector 8 side
を配置してアンプ9に接続する代わりにコネクタ8に圧力計[例えば半導体圧力センサを利用した圧力計、ブルドン管式圧力計、抵抗線(半導体含む)歪計を利用した圧力計、液体(水、水銀等)を利用した圧力計]を接続することができる。 The placed pressure gauge connector 8 instead of connecting to the amplifier 9 [for example, a semiconductor pressure sensor pressure gauge utilizing, Bourdon tube type pressure gauge resistance wire (including semiconductor) pressure gauge utilizing a strain gauge, liquid (water , it is possible to connect the pressure gauge] using mercury, etc.).

【0009】次に圧力計測装置1と体外循環用回路21 [0009] Then pressure measuring apparatus 1 and the extracorporeal circulation circuit 21
による圧力測定方法の一例について簡単に説明する。 Briefly explaining an example of a pressure measuring method according to. 液体流路2cの中を流れる流体圧力が増加して大気圧より大きくなると薄膜5が受圧部6方向へ膨張して受圧部6 Thin film 5 when the fluid pressure is greater than atmospheric pressure to increase the flow through the liquid flow path 2c is expanded to the pressure receiving portion 6 direction pressure receiving portion 6
中の圧力センサ10に圧力が印加され、これが電気信号に変換され、大気圧を基準として例えば+100mmH Pressure is applied to the pressure sensor 10 in, which is converted into an electric signal, for example, based on the atmospheric pressure + 100 mm H
g等として測定される。 It is measured as g and the like. 他方、液体流路2c中の流体圧力が減少して大気圧より小さくても感度良く圧力を測定できる。 On the other hand, a small but sensitively pressure than the fluid pressure is reduced atmospheric pressure in the liquid flow path 2c may be measured.

【0010】また本発明では、部品点数の削減を図るため前記アダプタ3とコネクタ4を一体化して本体2に装着することができる。 [0010] In the present invention, by integrating the adapter 3 and connector 4 for a reduction in the number of parts it can be attached to the body 2. 図6は前記アダプタ3とコネクタ4を一体化したコネクタ4Aを本体2の上部に装着した一実施例を示す。 Figure 6 shows an example of mounting the connector 4A which integrates the adapter 3 and connector 4 to the upper portion of the main body 2. コネクタ4Aは内筒4Acの上部と下部を開口するとともに内筒4Acの外周に溝4Aaを形成した外筒4Abが形成されている。 Connector 4A is an outer cylinder 4Ab having grooves 4Aa the outer periphery of the inner cylinder 4Ac with open top and bottom of the inner cylinder 4Ac is formed. 本体2の鍔2bをコネクタ4Aの溝4Aaに装着し、薄膜5を内筒4Ac The flange 2b of the body 2 is mounted in the groove 4Aa connectors 4A, a thin film 5 inner cylinder 4Ac
の下部または溝2aに直接装着しても良いし溝2aと内筒4Ac下部の間に挟持しても良い。 It may also be directly attached to the bottom or the groove 2a may be sandwiched between the lower inner tube 4Ac and grooves 2a. 受圧部6は薄膜5 The pressure receiving portion 6 is thin film 5
に密着するかあるいは内筒4Acの内周面に装着しても良い。 It may be mounted on the inner peripheral surface of the or the inner cylinder 4Ac adheres to.

【0011】また本発明ではリード線7を廃止してワイヤレスにすることができる。 [0011] In the present invention can be wirelessly abolished the lead wire 7. 図7はワイヤレスタイプの圧力計測装置1の一例を示す概略図で、図2の圧力計測装置1を構成するコネクタ4の内部に発信器14を配置し受圧部6に発信器14を接続して発信器14により受圧部6の圧力データ信号を無線で外部の受信部15に送信するようにしたものである。 Figure 7 is a schematic diagram showing an example of a pressure measurement device 1 of the wireless type, by connecting the transmitter 14 to the pressure receiving portion 6 arranged oscillator 14 inside the connector 4 constituting the pressure measuring apparatus 1 of FIG. 2 the transmitter 14 is obtained by the pressure data signal of the pressure receiving portion 6 to be transmitted to an external receiving unit 15 wirelessly. 受信部15は受信した微弱信号を増幅し表示するアンプ9に接続される。 Receiver 15 is connected to the amplifier 9 to be displayed to amplify the weak signal received. 発信器14は中央に変換部41が配置され、変換部41の上部にはアンテナ42が装着され、変換部41の下部は結線43を介して受圧部6に接続されている。 Transmitter 14 is disposed conversion unit 41 in the center, the upper part of the converter 41 antenna 42 is mounted, the lower portion of the converter 41 is connected to the pressure receiving portion 6 via connection 43. 受圧部6の圧力センサ10の変化量を変換部41で信号に変換しこれをアンテナ42より受信部15に送信し、アンプ9で出力する。 Into a signal the variation of the pressure sensor 10 of the pressure receiving portion 6 by the converter 41 and sends it to the receiving unit 15 from the antenna 42, and outputs the amplifier 9. また発信器14は図6の圧力計測装置1を構成するコネクタ4Aの内部に図7と同様に配置することができる。 The transmitter 14 may be arranged in the same manner as that of FIG. 7 in the interior of the connector 4A constituting the pressure measuring apparatus 1 of FIG.

【0012】図8は本発明の圧力計測装置1のその他の実施例を示す圧力計測装置1Dの概略図で、本体2の液体流路2cの上部に薄膜5を配置し、本体2の上部にアダプタ46、中空の管状体45を連結して、これにアダプタ47と圧力センサ50を配置したコネクタ8を介してアンプ9を接続したものである。 [0012] Figure 8 is a schematic view of a pressure measuring device 1D showing another embodiment of a pressure measurement device 1 of the present invention, a thin film 5 is placed on top of the body 2 the liquid flow path 2c, the upper portion of the main body 2 adapter 46, by connecting a hollow tubular body 45, which are connected to the amplifier 9 via the connector 8 of arranging the adapter 47 and the pressure sensor 50 thereto. 中空の管状体45 Hollow tubular body 45
(必要に応じてアダプタ46、47)の中には空気または好ましくは液体(生理食塩液、水)を充填して、薄膜5から圧力センサ10への圧力伝導能力をより良くすることができる。 Air or preferably a liquid (physiological saline, water) in a (adapters 46 and 47 as required) by filling, it is possible to better the pressure transfer capability of the pressure sensor 10 from the thin film 5. 図8では本体2と管状体45、管状体4 Body 2 and the tubular member 45 in FIG. 8, the tubular body 4
5とコネクタ8の間にそれぞれアダプタ46、47を配置しているが本体2と管状体45、管状体45とコネクタ8は直接連結するようにしても良い。 5 and is respectively arranged an adapter 46, 47 between the connector 8 body 2 and the tubular body 45, tubular body 45 and the connector 8 may be connected directly. 圧力センサ50 The pressure sensor 50
は半導体に限定されず、その他の材料でも使用できる。 Is not limited to the semiconductor, it may be used in other materials.
またコネクタ8側に圧力センサ50を配置してアンプ9 The amplifier 9 by arranging the pressure sensor 50 to the connector 8 side
に接続する代わりにコネクタ8に圧力計[例えば半導体圧力センサを利用した圧力計、ブルドン管式圧力計、抵抗線(半導体含む)歪計を利用した圧力計、液体(水、 Pressure gauge using a pressure gauge [for example, a semiconductor pressure sensor to the connector 8, instead of connecting to, Bourdon tube type pressure gauge resistance wire (including semiconductor) pressure gauge utilizing a strain gauge, liquid (water,
水銀等)を利用した圧力計]を接続することができる。 It can be connected to a pressure gauge] using mercury, etc.).

【0013】図9と図10は本発明の圧力計測装置1のその他の実施例を示す圧力計測装置1の概略図で、コネクタ4の内筒4cの壁面内に下部から上部に亘って、薄膜5と内筒4c下部及び受圧部6下部との間に形成される空間16の圧逃孔17を形成するとともに内筒4cの上部(圧逃孔17の上部)に圧逃げ調整用の栓18を装着したものである。 [0013] Figure 9 and Figure 10 is a schematic view of the pressure measuring apparatus 1 showing another embodiment of a pressure measurement device 1 of the present invention, over from the lower to the upper inside wall of the inner cylinder 4c of the connector 4, a thin film 5 and inner cylinder 4c lower and the pressure receiving portion 6 upper part of the inner tube 4c to form a pressure relief hole 17 of the space 16 formed between the lower plug in for pressure relief down adjustment (top of the pressure relief hole 17) 18 the one in which was mounted. 図2(図7)の圧力計測装置1では、コネクタ4の内筒4cをアダプタ3の内部に装着する際、空気の逃げ場がないため空間16が圧縮されないようにアダプタ3と内筒4cの隙間から空気を抜きながら装着しないと、空間16に異常な圧力が加わり、薄膜5で正確な圧力を受圧部6に伝導できない懸念がある。 2 In the pressure measuring apparatus 1 (FIG. 7), when mounting the inner tube 4c of the connector 4 into the interior of the adapter 3, the gap of the inner cylinder 4c and the adapter 3 such that the space 16 because there is no escape of the air is not compressed If not mounted while venting air from, joined by abnormal pressure in the space 16, there is a concern that can not conduct accurate pressure to the pressure receiving portion 6 with a thin film 5.
また、異常な圧により、薄膜5または受圧部6に損傷を与える懸念もある。 In addition, the abnormal pressure, there is also concern about damage to the thin film 5 or the pressure receiving portion 6. このため、図9(図10)の圧力計測装置1は前記のように内筒4cに圧逃孔17と栓18 Therefore, FIG. 9 (10) pressure relief hole 17 and the plug pressure measuring apparatus 1 in the inner cylinder 4c as described above the 18
を設け、これらの懸念を回避できるように改良したものである。 The provided is an improvement to be able avoid these concerns. 例えば圧逃孔17上部と栓18にそれぞれネジ山とネジ溝を設け、栓18を締めた時には圧逃孔17と空間16の気密性が保持され、栓18を緩めた時には気密性がなくなり、空間16内が圧逃孔17を介して外気と連通し、空間16内の圧縮された空気を外に排出することができる。 For example each pressure relief holes 17 top and plug 18 is provided a screw thread and the screw groove, when tightening the plug 18 is held airtightness of pressure release hole 17 and the space 16, when loosened plug 18 no longer airtight, space 16 communicates with outside air communicates through the pressure relief hole 17, it can be discharged compressed air in the space 16 to the outside. 圧逃孔17上部と栓18はネジ山とネジ溝の代わりに適切なテーパーを設けて気密性を調整できるようにしても良い。 Pressure relief holes 17 upper and plug 18 may be adjusted airtightness provided appropriate taper in place of threads and the thread groove. また前記圧逃孔17はアダプタ3 Also, the pressure relief hole 17 adapter 3
の壁面内に下部内側から外側に亘って形成しても良いし、内筒4cとアダプタ3の壁面内に内筒4cの下部からアダプタ3の下部外側に亘って形成しても良い。 Of from the lower inner inside wall surface may be formed over the outer, it may be formed from the lower portion of the inner tube 4c to the inner cylinder 4c and the inner wall surface of the adapter 3 over the lower outer adapter 3. この場合、栓18はアダプタ3の下部外側に装着される。 In this case, plug 18 is mounted to the lower outer side of the adapter 3. また前記圧逃孔17はアダプタ3と本体2の壁面内にアダプタ3の下部内側から本体2の上部外側(鍔2bも含む)に亘って形成しても良い。 Also the pressure relief holes 17 may be formed from the bottom inside of the adapter 3 in the wall of the adapter 3 and the body 2 on the top outside of the main body 2 (including the flange 2b). この場合、栓18は本体2の上部外側(鍔2bも含む)に装着される。 In this case, plug 18 is mounted on the top outside of the main body 2 (including the flange 2b).

【0014】なお圧力計側装置1(1D)は、ディスポ部1Aと圧力モニタ部1Bから構成され、それぞれに区分して使用することができる。 [0014] Note that the pressure gauge side apparatus 1 (1D) is composed of a disposable part 1A and the pressure monitor 1B, it can be used separately to each. ディスポ部1Aは一回限りの使い捨て部分で圧力モニタ部1Bはディスポ部1A Disposable portion 1A is pressure monitor 1B disposable portion of the one-time is disposable portion 1A
に着脱して反復して何度でも使用できる部分である。 Is a moiety that can be used repeatedly with repeated with detachable to. 前記圧力計測装置1(1D)はディスポ部1Aと圧力モニタ部1Bからなり、前記ディスポ部1Aと圧力モニタ部1Bは次の(a)から(f)のいずれかの組み合わせより選択することができる。 The pressure measuring device 1 (1D) consists disposable portion 1A and the pressure monitor unit 1B, the disposable portion 1A and the pressure monitor unit 1B may be selected from any combination of from the following (a) (f) . (a)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、リード線7、アンプ9、(b)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、発信機14、受圧部15、(c)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、圧力センサ、コネクタ8、アンプ9、(d)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、コネクタ8、圧力計、(e)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが管状体45、圧力センサ50、 (A) disposable portion 1A is the main body 2, the thin film 5, the pressure monitor 1B is pressure-receiving portion 6, the lead wire 7, the amplifier 9, (b) a disposable unit 1A is the main body 2, the thin film 5, the pressure monitor 1B is pressure receiving portion 6 , transmitter 14, the pressure receiving portion 15, (c) a disposable unit 1A is the main body 2, the thin film 5, the pressure receiving portion 6 a pressure monitor unit 1B, a pressure sensor, a connector 8, amplifier 9, (d) a disposable unit 1A is the main body 2, thin film 5, the pressure receiving portion 6 a pressure monitor unit 1B, the connector 8, pressure gauge, (e) a disposable unit 1A is the main body 2, the thin film 5, the pressure monitor 1B tubular body 45, a pressure sensor 50,
コネクタ8、アンプ9、(f)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが管状体45、コネクタ8、圧力計、 Connector 8, amplifier 9, (f) disposable portion 1A is the main body 2, the thin film 5, the pressure monitor 1B tubular body 45, the connector 8, pressure gauge,

【0015】 [0015]

【発明の作用効果】体外循環時の圧力を正確に測定できるのでシャントトラブルや血圧低下を迅速に感知することができる。 Since the pressure during extracorporeal circulation [effects of the invention] can be measured accurately can be quickly sense the shunt trouble and hypotension. 圧力測定部位(受圧部6)が滑らかでかつ空気との接触がない構造を採用することができるので血液のクロッティングが生じにくい。 Blood clotting is less likely to occur since it is possible to adopt a structure not in contact with the smooth and air pressure measurement site (the pressure receiving portion 6).

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の体外循環用回路の概略図 Schematic diagram of the extracorporeal circulation circuit of the present invention; FIG

【図2】本発明の体外循環用圧力計測装置の概略図 2 is a schematic diagram of an extracorporeal circulation pressure measuring device of the present invention

【図3】図2の圧力センサの平面図 Figure 3 is a plan view of the pressure sensor of FIG. 2

【図4】図2の圧力センサのA矢視図 [4] A arrow view of the pressure sensor of FIG. 2

【図5】圧力センサの回路図 Figure 5 is a circuit diagram of a pressure sensor

【図6】本発明の体外循環用圧力計測装置のその他の実施例を示す概略図 Schematic diagram showing another embodiment of the extracorporeal circulation pressure measuring device of the present invention; FIG

【図7】本発明の体外循環用圧力計測装置のその他の実施例を示す概略図 Schematic diagram showing another embodiment of the extracorporeal circulation pressure measuring device of the present invention; FIG

【図8】本発明の体外循環用圧力計測装置のその他の実施例を示す概略図 Schematic diagram showing another embodiment of the extracorporeal circulation pressure measuring device of the present invention; FIG

【図9】本発明の体外循環用圧力計測装置のその他の実施例を示す概略図 Schematic diagram showing another embodiment of the extracorporeal circulation pressure measuring device of the present invention; FIG

【図10】本発明の体外循環用圧力計測装置のその他の実施例を示す概略図 Schematic diagram showing another embodiment of the extracorporeal circulation pressure measuring device of the present invention; FIG

【符号の説明】 DESCRIPTION OF SYMBOLS

1 圧力計測装置 1D 圧力計測装置 1A ディスポ部 1B 圧力モニタ部 2 本体 2a 溝 2b 鍔 2c 液体流路 3 アダプタ 3a 溝 3b 鍔 4 コネクタ 4a 溝 4b 外筒 4c 内筒 4A コネクタ 4Aa 溝 4Ab 外筒 4Ac 内筒 5 薄膜 6 受圧部 7 リード線 8 コネクタ 9 アンプ 10 圧力センサ 10a 台座 11 ダイヤフラム部 12 抵抗(R) 13 センサ回路 14 発信器 15 受信部 16 空間 17 圧逃孔 18 栓 21 体外循環用回路 22 動脈側回路 23 動脈側シャント 24 動脈側チャンバー 25 体液処理器 26 送液ポンプ 32 静脈側回路 33 静脈側シャント 34 静脈側チャンバー 41 変換部 42 アンテナ 43 結線 45 管状体 46、47 アダプタ 50 圧力センサ First pressure measuring device 1D pressure measuring device 1A disposable portion 1B pressure monitor unit 2 main body 2a groove 2b flange 2c liquid channel 3 adapter 3a groove 3b flange 4 connector 4a grooves 4b outer cylinder 4c inner cylinder 4A connector 4Aa groove 4Ab outer cylinder 4Ac cylinder 5 thin film 6 receptor part 7 leads 8 connector 9 amplifier 10 pressure sensor 10a pedestal 11 diaphragm 12 resistance (R) 13 sensor circuit 14 transmitter 15 receiver 16 space 17 pressure relief hole 18 plug 21 extracorporeal circulation circuit 22 artery side circuit 23 artery shunt 24 arterial chamber 25 body fluid treatment device 26 feeding pump 32 vein side circuit 33 venous shunt 34 vein side chamber 41 converter 42 antenna 43 connected 45 the tubular body 46, 47 adapter 50 pressure sensor

───────────────────────────────────────────────────── フロントページの続き (72)発明者 筏 宏臣 神奈川県相模原市横山台1丁目26番7号 川澄化学工業株式会社相模原事業所内 (72)発明者 阿部 隆行 東京都品川区南大井3丁目28番15号 川澄 化学工業株式会社内 Fターム(参考) 2F055 AA39 BB03 CC02 CC03 CC21 DD05 EE12 EE13 FF34 FF49 GG22 GG49 HH08 4C017 AA08 AB10 AC03 ────────────────────────────────────────────────── ─── front page of the continuation (72) inventor raft Hiroomi Sagamihara, Kanagawa Prefecture Yokoyamadai 1-chome No. 26 No. 7 Kawasumikagakukogyo Co., Ltd. Sagamihara plant (72) inventor Takayuki Abe Shinagawa-ku, Tokyo Minamioi 3-chome 28 Ban No. 15 Kawasumi chemical industry Co., Ltd. in the F-term (reference) 2F055 AA39 BB03 CC02 CC03 CC21 DD05 EE12 EE13 FF34 FF49 GG22 GG49 HH08 4C017 AA08 AB10 AC03

Claims (4)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】本体2の液体流路2cの上部に薄膜5を介して受圧部6を配置し、 次の(a)から(d)のうちいずれかの手段を含むことを特徴とする圧力計測装置1。 1. A through the thin film 5 on top of the main body 2 liquid channel 2c arranged pressure receiving portion 6, characterized in that it comprises any means of the the following (a) (d) Pressure measuring device 1. (a)前記受圧部6にリード線7を介してアンプ9に接続する手段、(b)前記受圧部6に発信器14を接続して、発信器14により受圧部6の圧力データ信号を無線で外部の受信部15に送信する手段、(c)前記受圧部6に管状体を介して圧力センサを配置したコネクタ8を装着し、該コネクタ8にアンプ9を装着する手段、(d)前記受圧部6に管状体とコネクタ8を介して圧力計に接続する手段、 (A) means for connecting to the amplifier 9 via the lead wires 7 on the pressure receiving portion 6, (b) connecting the transmitter 14 to the pressure receiving portion 6, the wireless pressure data signal of the pressure receiving portion 6 by transmitter 14 in means for transmitting to the external receiving unit 15, fitted with a connector 8 arranged a pressure sensor through a tubular body (c) the pressure-receiving portion 6, the means for mounting the amplifier 9 to the connector 8, (d) the It means for connecting to the pressure gauge through the tubular body and the connector 8 to the pressure receiving portion 6,
  2. 【請求項2】本体2の液体流路2cの上部に薄膜5を配置し、 次の(e)から(f)のうちいずれかの手段を含むことを特徴とする圧力計測装置1D。 2. A thin film 5 is placed on top of the body 2 the liquid flow path 2c, the pressure measuring device 1D, which comprises any means of the following from (e) (f). (e)前記本体2に管状体45を介して圧力センサ50を配置したコネクタ8 (E) the connector has been disposed a pressure sensor 50 through the tubular body 45 to the main body 2 8
    を装着し、該コネクタ8にアンプ9を装着する手段、 The mounting means for mounting the amplifier 9 to the connector 8,
    (f)前記本体2に管状体45とコネクタ8を介して圧力計に接続する手段、 (F) means for connecting to the pressure gauge through the tubular body 45 and the connector 8 to the body 2,
  3. 【請求項3】前記圧力計測装置1(1D)はディスポ部1Aと圧力モニタ部1Bからなり、前記ディスポ部1A Wherein the pressure measuring device 1 (1D) consists disposable portion 1A and the pressure monitor unit 1B, the disposable portion 1A
    と圧力モニタ部1Bは次の(a)から(f)のいずれかの組み合わせよりなることを特徴とする請求項1ないし請求項2に記載の圧力計測装置1(1D)。 A pressure monitor unit 1B is pressure measuring device according to claim 1 or claim 2, characterized in that consists of any combination of from the following (a) (f) 1 (1D). (a)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、リード線7、アンプ9、(b)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、発信器14、受信部15、(c)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、圧力センサ、コネクタ8、アンプ9、(d)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが受圧部6、コネクタ8、圧力計、(e)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが管状体45、圧力センサ50、コネクタ8、 (A) disposable portion 1A is the main body 2, the thin film 5, the pressure monitor 1B is pressure-receiving portion 6, the lead wire 7, the amplifier 9, (b) a disposable unit 1A is the main body 2, the thin film 5, the pressure monitor 1B is pressure receiving portion 6 , transmitter 14, receiver 15, (c) a disposable unit 1A is the main body 2, the thin film 5, the pressure receiving portion 6 a pressure monitor unit 1B, a pressure sensor, a connector 8, amplifier 9, (d) a disposable unit 1A is the main body 2, thin film 5, the pressure receiving portion 6 a pressure monitor unit 1B, the connector 8, pressure gauge, (e) a disposable unit 1A is the main body 2, the thin film 5, the pressure monitor 1B tubular body 45, a pressure sensor 50, connector 8,
    アンプ9、(f)ディスポ部1Aが本体2、薄膜5、圧力モニタ部1Bが管状体45、コネクタ8、圧力計、 Amplifier 9, (f) disposable portion 1A is the main body 2, the thin film 5, the pressure monitor 1B tubular body 45, the connector 8, pressure gauge,
  4. 【請求項4】動脈側シャント23と送液ポンプ26間の動脈側回路22の途中に請求項1ないし請求項3に記載の圧力計測装置1(1D)を装着したことを特徴とする体外循環用回路。 4. extracorporeal circulation, characterized in that mounted pressure measuring device according to claims 1 to 3 in the middle of the arterial circuit 22 between the artery side shunt 23 and liquid feed pump 26 1 (1D) use circuit.
JP2000101737A 1999-04-27 2000-04-04 Pressure measuring apparatus for extracorporeal circulation and circuit for extracorporeal circulation Pending JP2001013024A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP11-119853 1999-04-27
JP11985399 1999-04-27
JP2000101737A JP2001013024A (en) 1999-04-27 2000-04-04 Pressure measuring apparatus for extracorporeal circulation and circuit for extracorporeal circulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000101737A JP2001013024A (en) 1999-04-27 2000-04-04 Pressure measuring apparatus for extracorporeal circulation and circuit for extracorporeal circulation

Publications (1)

Publication Number Publication Date
JP2001013024A true JP2001013024A (en) 2001-01-19

Family

ID=26457518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000101737A Pending JP2001013024A (en) 1999-04-27 2000-04-04 Pressure measuring apparatus for extracorporeal circulation and circuit for extracorporeal circulation

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Country Link
JP (1) JP2001013024A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013233446A (en) * 2006-01-26 2013-11-21 Debiotech Sa Pressure measurement unit for determining fluid pressure within medical disposables
CN103868640A (en) * 2012-12-16 2014-06-18 何永 Double micro digital fluid pressure gauge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013233446A (en) * 2006-01-26 2013-11-21 Debiotech Sa Pressure measurement unit for determining fluid pressure within medical disposables
CN103868640A (en) * 2012-12-16 2014-06-18 何永 Double micro digital fluid pressure gauge

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