JP2647124B2 - Ultrasonic bubble detector with separate detector - Google Patents
Ultrasonic bubble detector with separate detectorInfo
- Publication number
- JP2647124B2 JP2647124B2 JP63078443A JP7844388A JP2647124B2 JP 2647124 B2 JP2647124 B2 JP 2647124B2 JP 63078443 A JP63078443 A JP 63078443A JP 7844388 A JP7844388 A JP 7844388A JP 2647124 B2 JP2647124 B2 JP 2647124B2
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- JP
- Japan
- Prior art keywords
- blood circulation
- circulation circuit
- blood
- detector
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Geophysics And Detection Of Objects (AREA)
- External Artificial Organs (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は人工腎臓装置における血液循環回路内に発生
した気泡を検出して、血液循環回路の血液の循環を停止
する気泡検出装置に関する。Description: TECHNICAL FIELD The present invention relates to an air bubble detection device that detects air bubbles generated in a blood circulation circuit in an artificial kidney device and stops the circulation of blood in the blood circulation circuit.
〔従来の技術〕 従来、人工腎臓装置の血液循環回路において発生した
気泡を、血液と共に患者の体内に循環させないようにす
るために、該血液循環回路を超音波によって気泡の有無
を検出する気泡検出部と、該気泡検出部からの信号によ
って血液循環回路を閉塞する血液循環回路閉塞機構とを
一体にした血液循環回路クランプ部を装着して人工透析
を行なっていた。[Prior Art] Conventionally, in order to prevent bubbles generated in a blood circulation circuit of an artificial kidney apparatus from being circulated together with blood into a patient's body, the blood circulation circuit detects the presence or absence of bubbles by ultrasonic waves. The artificial dialysis is performed by mounting a blood circulation circuit clamp unit which integrates a blood circulation circuit closing mechanism for closing the blood circulation circuit with a signal from the bubble detection unit.
しかし、このような気泡検出部と血液循環回路閉塞機
構とを一体にしたクランプ部を装着した人工腎臓装置に
おいては、血液循環回路内に気泡が発生した場合に、先
ず、発生した気泡の有無を検出し、その後血液循環回路
内の血液の循環を停止してから、血液循環回路である透
明ホースを縦にしつつこれを軽く叩いて透明ホース内の
気泡を静脈側ドリップチャンバーに導びき、気泡を除去
していた。However, in such an artificial kidney device equipped with a clamp unit integrating the air bubble detection unit and the blood circulation circuit closing mechanism, when air bubbles are generated in the blood circulation circuit, first, the presence or absence of the generated air bubbles is determined. After detecting, after stopping the circulation of blood in the blood circulation circuit, while tapping the transparent hose, which is the blood circulation circuit, vertically, the air bubbles in the transparent hose are led to the venous drip chamber, and the air bubbles are removed. Had been removed.
けれども、該装置では気泡検出部と静脈側ドリップチ
ャンバーとの間がかなり隔れていたり、該血液循環回路
用のホースがデッドスペースを無くするために細く形成
されていることから、該ホース中の気泡を長い距離で移
動させることは容易なことでなかった。However, in this device, the air bubble detector and the venous drip chamber are considerably separated, and the hose for the blood circulation circuit is formed thin to eliminate dead space. Moving bubbles over long distances has not been easy.
それ故、この気泡検出部を血液回路閉塞機構を備えた
血液回路クランプ部より分離して、静脈側ドリップチャ
ンバーの下流の該ドリップチャンバーに近接した位置に
着脱自在に設けて、気泡の除去を容易にした検出部分離
型超音波気泡検出装置が使用されるようになった。Therefore, this air bubble detecting section is separated from the blood circuit clamp section having the blood circuit closing mechanism, and is detachably provided at a position downstream of the venous drip chamber and close to the drip chamber to facilitate removal of air bubbles. In this case, an ultrasonic bubble detector having a detection unit separated type has been used.
しかしながら、このような検出部分離型超音波気泡検
出装置は、透明ホース内の気泡の除去については容易に
なったけれども、気泡の検出をする気泡検出部と、血液
回路閉塞機構とが分離されているために、該透明ホース
を血液循環回路クランプ部に装着するのを忘れて人工腎
臓装置を作動させてしまうことがある。However, although such a detection unit separated type ultrasonic bubble detection device facilitates the removal of bubbles in the transparent hose, the bubble detection unit for detecting bubbles and the blood circuit closing mechanism are separated. For this reason, there is a case where the artificial kidney device is operated by forgetting to attach the transparent hose to the blood circulation circuit clamp.
このような場合、上記検出部分離型超音波気泡検出装
置では、気泡検出部で気泡の有無を検出し、これを電気
信号に変換して血液循環回路閉塞機構に伝達するが、血
液循環回路クランプ部に血液循環回路用の透明ホースが
装着されていないために、血液循環回路閉塞機構によっ
て血液の循環を停止させることができず、気泡が混入し
たまま人体内に血液を循環させてしまうことがある。In such a case, in the above detection unit separated type ultrasonic bubble detection device, the presence or absence of bubbles is detected by the bubble detection unit, which is converted into an electric signal and transmitted to the blood circulation circuit closing mechanism. Since the blood circulation circuit transparent hose is not attached to the part, blood circulation cannot be stopped by the blood circulation circuit closing mechanism, and blood may be circulated in the human body with air bubbles mixed. is there.
このようなことで患者を死に至らしめることもあり、
極めて危険な状態となるので、人工腎臓装置の取り扱い
には非常な注意を払わなければならないので、煩雑であ
ると云った問題点があった。このような問題点は、人工
腎臓装置において気泡検出部と、血液回路閉塞機構とを
分離したことにより発生する特有のものである。This can cause the patient to die,
Since it is extremely dangerous, great care must be taken in handling the artificial kidney device, and there is a problem that it is complicated. Such a problem is peculiar to the artificial kidney device caused by separating the air bubble detector from the blood circuit closing mechanism.
本発明者らは上記の問題点に鑑みて鋭意検討した結
果、血液循環回路クランプ部に血液循環回路用の透明ホ
ース装着の有無を検出する機構を備えることにより、前
記問題点を解決し得ることを見い出して本発明に到達し
た。The present inventors have conducted intensive studies in view of the above problems, and as a result, it has been found that the problem can be solved by providing a mechanism for detecting whether or not a transparent hose for a blood circulation circuit is attached to a blood circulation circuit clamp unit. And arrived at the present invention.
すなわち、前記課題を解決するためのこの発明は、体
外血液循環における血液循環回路の静脈側ドリップチャ
ンバーに近接して装着される超音波気泡検出部と、該超
音波気泡検出部と隔離して気泡検出部の電気信号によっ
て血液循環回路の閉塞を行なう血液循環回路閉塞機構お
よび光学的検知方式による血液循環回路未装着検出機構
を装着した血液循環回路クランプ部とを有することを特
徴とする検出部分離型超音波気泡検出装置である。That is, the present invention for solving the above-mentioned problem is directed to an ultrasonic bubble detecting unit mounted in close proximity to a venous drip chamber of a blood circulation circuit in extracorporeal blood circulation, and an air bubble separated from the ultrasonic bubble detecting unit. A detection unit separation having a blood circulation circuit closing mechanism for closing the blood circulation circuit by an electric signal of the detection unit, and a blood circulation circuit clamp unit equipped with a blood circulation circuit non-wearing detection mechanism by an optical detection method. It is a type ultrasonic bubble detector.
以上の構成においては、静脈側ドリップチャンバー近
傍の血液循環回路に超音波気泡検出部を取り付け、しか
る後、血液循環回路を血液循環回路クランプ部に装着す
る。In the above configuration, the ultrasonic bubble detector is attached to the blood circulation circuit near the venous drip chamber, and then the blood circulation circuit is attached to the blood circulation circuit clamp.
そして、静脈側ドリップチャンバーから血液循環回路
内に血液を供給するのであるが、このとき、静脈側ドリ
ップチャンバーから血液循環回路内に気泡が混入した場
合には、超音波気泡検出部により気泡の検出が行なわ
れ、超音波気泡検出部から出力される電気信号を入力し
た血液循環回路閉塞機構が作動して、血液循環回路を閉
塞する。その後に、血液循環回路閉塞機構から静脈側ド
リップチャンバーまでの血液循環回路に軽い振動を与え
て内部の気泡を静脈側ドリップチャンバーに戻す。Then, blood is supplied from the venous drip chamber into the blood circulation circuit. At this time, if air bubbles enter the blood circulation circuit from the venous drip chamber, the ultrasonic bubble detection unit detects the air bubbles. Is performed, and the blood circulation circuit closing mechanism, which has received the electric signal output from the ultrasonic bubble detector, operates to close the blood circulation circuit. Thereafter, light vibration is applied to the blood circulation circuit from the blood circulation circuit closing mechanism to the venous drip chamber to return the internal air bubbles to the venous drip chamber.
以上のようにして血液循環回路内に混入した気泡を除
去することができるのである。As described above, air bubbles mixed in the blood circulation circuit can be removed.
この装置においては、静脈側ドリップチャンバー近傍
の血液循環回路に超音波気泡検出器を装着する操作及び
血液循環回路閉塞機構に血液循環回路を装着する操作の
二操作を必要とする。In this device, two operations are required: an operation of attaching an ultrasonic bubble detector to a blood circulation circuit near the venous drip chamber and an operation of attaching a blood circulation circuit to the blood circulation circuit closing mechanism.
そこで、この二操作の内、血液循環回路閉塞機構に血
液循環回路の装着をしなかった場合には、血液循環回路
未装着検出機構により血液循環回路の未装着状態が検出
され、操作者に血液循環回路の装着が促される。よっ
て、本発明により常に血液循環回路を血液循環回路閉塞
機構に装着されることになる。Therefore, when the blood circulation circuit is not mounted on the blood circulation circuit closing mechanism in the two operations, the blood circulation circuit non-mounting state is detected by the blood circulation circuit non-mounting detection mechanism, and the blood circulation circuit is provided to the operator. The installation of the circulation circuit is prompted. Therefore, according to the present invention, the blood circulation circuit is always mounted on the blood circulation circuit closing mechanism.
本発明の検出部分離型超音波気泡検出装置の一例を挙
げて、本発明を具体的に説明する。The present invention will be specifically described with reference to an example of the detection unit separated type ultrasonic bubble detection device of the present invention.
第１図は人工腎臓装置の体外血液循環回路に装着した
本発明実施例の検出部分離型超音波気泡検出装置の斜視
図を表わし、第２図は第１図における血液循環回路未装
着検出機構のＡ−Ａ線矢示断面図を表わし、第３図はそ
の検出回路図を表わす。FIG. 1 is a perspective view of a detection unit separated type ultrasonic bubble detector according to an embodiment of the present invention mounted on an extracorporeal blood circulation circuit of an artificial kidney apparatus, and FIG. 2 is a detection mechanism of a blood circulation circuit not mounted in FIG. FIG. 3 shows a sectional view taken along the line AA of FIG.
第１図において、１は一端を静脈側ドリップチャンバ
ー２に接続されており、他端を患者の静脈に接続して、
人工腎臓装置の体外血液循環回路を形成する透明ホース
である。In FIG. 1, 1 has one end connected to the venous drip chamber 2 and the other end connected to a patient's vein.
This is a transparent hose that forms an extracorporeal blood circulation circuit of the artificial kidney device.
該透明ホース１にはその上流側のドリップチャンバー
２の直後に、超音波によって気泡の有無を検出する気泡
検出部３が、また、その途中の流路に血液循環回路閉塞
機構４及び血液循環回路未装着検出機構５を備えた血液
循環回路クランプ部６が装着されており、これら気泡検
出部３と血液循環回路クランプ部６とはケーブル7aおよ
び7bによって制御部7cに接続され、検出部分離型超音波
気泡検出装置８を形成している。Immediately after the drip chamber 2 on the upstream side of the transparent hose 1, an air bubble detecting unit 3 for detecting the presence or absence of air bubbles by ultrasonic waves is provided, and a blood circulation circuit closing mechanism 4 and a blood circulation circuit A blood circulation circuit clamp unit 6 having a non-attachment detection mechanism 5 is mounted. The air bubble detection unit 3 and the blood circulation circuit clamp unit 6 are connected to a control unit 7c by cables 7a and 7b, and are separated from each other. An ultrasonic bubble detector 8 is formed.
前記血液循環回路クランプ部６はその中央部に血液循
環回路用の透明ホース１を挿入するための溝部９が形成
されており、その溝部９の一方の側に血液循環回路閉塞
機構４が、また、それに隣接して他方の側に血液循環回
路未装着検出機構５が装着されている。The blood circulation circuit clamp 6 has a groove 9 formed at the center thereof for inserting the transparent hose 1 for the blood circulation circuit. The blood circulation circuit closing mechanism 4 is provided on one side of the groove 9. A blood circulation circuit non-mounting detection mechanism 5 is mounted on the other side adjacent to the blood circulation circuit.
該血液循環回路未装着機構５は、第２図に示す如く、
溝部９を挟んで発光素子5aと受光素子5bとを配設したも
ので、この発光素子5aより発光された光線を受光素子5b
により受光して、その光の強弱によって、第３図に示す
検出回路図の検出、時素回路5cを通じて透明ホース１の
装着の有無を検出し、溝部９に透明ホース１が装着され
ていない場合、これを警報機10に伝達して警報音を発生
させて取扱者に注意を促す。As shown in FIG.
The light emitting element 5a and the light receiving element 5b are arranged with the groove 9 interposed therebetween, and the light emitted from the light emitting element 5a is
In the case where the transparent hose 1 is not installed in the groove 9, the presence or absence of the transparent hose 1 is detected through the detection circuit diagram shown in FIG. This is transmitted to the alarm 10 to generate an alarm sound to call attention to the operator.
また、前記血液循環回路閉塞機構４は、前記気泡検出
部３の気泡の発生の有無を知らせる電気信号により、ソ
レノイド11を作動させて、クランプレバー12を吸引し
て、該レバー12により透明ホース１を押圧して血液循環
回路用透明ホース１を閉塞させる。In addition, the blood circulation circuit closing mechanism 4 operates the solenoid 11 by an electric signal indicating whether or not bubbles are generated by the bubble detection unit 3 to suck the clamp lever 12, and the transparent hose 1 is operated by the lever 12. Is pressed to close the blood circulation circuit transparent hose 1.
このように構成した検出部分離型超音波検出装着８は
血液循環回路のクランプ部６の溝部９に透明ホース１を
装着しないで血液を循環させようとしても、前記血液循
環回路未装着検出機構５の発光素子5aより発せられた光
線が受光素子5bに強く照射させられるのでこれによって
検出時素回路5cが警報器10に信号を伝達し、警報を発す
るので、透明ホース１を血液循環回路クランプ部６の溝
部９に装着しないで検出部分離型超音波検出装置８を作
動させることがない。With the detection unit separated type ultrasonic detection mounting 8 configured as described above, even if an attempt is made to circulate blood without mounting the transparent hose 1 in the groove 9 of the clamp unit 6 of the blood circulation circuit, the blood circulation circuit non-mounted detection mechanism 5 is used. The light emitted from the light emitting element 5a is strongly irradiated on the light receiving element 5b, whereby the detection elementary circuit 5c transmits a signal to the alarm device 10 and issues an alarm. There is no need to operate the detecting unit separated type ultrasonic detecting device 8 without mounting it in the groove 9 of 6.
したがって、このような検出部分離型超音波検出装置
８を備えた人工腎臓装置は気泡検出部３により検出され
た気泡の存在を直ちに血液回路閉塞機構４に伝達して血
液循環回路を閉塞することができるので、血液中に気泡
が混入されたまま人体内に血液を循環させてしまうこと
が無く、安心して使用することができる。Therefore, the artificial kidney apparatus provided with such a detection unit separated type ultrasonic detection device 8 immediately transmits the presence of bubbles detected by the bubble detection unit 3 to the blood circuit closing mechanism 4 to block the blood circulation circuit. As a result, the blood is not circulated in the human body while air bubbles are mixed in the blood, and the blood can be used with confidence.
本発明の検出部分離型超音波気泡検出装置は、血液回
路閉塞機構に近接して血液回路未装着検出機構を装着し
たので、超音波気泡検出部により検出した信号を血液循
環回路閉塞機構に伝達した時に、血液循環回路の閉塞を
確実に行なうことができ、血液中に気泡が混入されたま
ま人体内に血液を循環させてしまうことが無いために、
安心して使用することができる。Since the detection unit separated type ultrasonic bubble detection device of the present invention has the blood circuit non-mounting detection mechanism mounted near the blood circuit closing mechanism, the signal detected by the ultrasonic bubble detection unit is transmitted to the blood circulation circuit closing mechanism. The blood circulation circuit can be reliably blocked, and blood does not circulate in the human body while air bubbles are mixed in the blood.
Can be used with confidence.
第１図は人工腎臓装置の体外血液循環回路に装着した本
発明実施例の検出部分離型超音波気泡検出装置の斜視図
を表わし、第２図は血液回路未装着検出機構のを示すＡ
−Ａ線矢示水平断面図を表わし、第３図はその検出回路
図を表わす。 １…透明ホース、２…静脈側ドリップチャンバー、３…
気泡検出部、４…血液循環回路閉塞機構、５…血液循環
回路未装着検出機構、5a…発光素子、5b…受光素子、5c
…検出・時素回路、６…血液循環回路クランプ部、7a,7
b…ケーブル、7c…制御部、８…検出部分離型超音波気
泡検出装置、９…溝部、10…警報機、11…ソレノイド、
12…クランプレバー、13…カバー。FIG. 1 is a perspective view of a detection unit separated type ultrasonic bubble detection device according to an embodiment of the present invention mounted on an extracorporeal blood circulation circuit of an artificial kidney device, and FIG.
FIG. 3 shows a horizontal sectional view taken along the line A, and FIG. 3 shows a detection circuit diagram thereof. 1: transparent hose, 2: venous drip chamber, 3:
Bubble detector, 4 ... blood circulation circuit closing mechanism, 5 ... blood circulation circuit non-wearing detection mechanism, 5a ... light emitting element, 5b ... light receiving element, 5c
… Detection / time element circuit, 6… Blood circuit clamp section, 7a, 7
b ... Cable, 7c ... Control unit, 8 ... Detection unit separation type ultrasonic bubble detector, 9 ... Groove, 10 ... Alarm, 11 ... Solenoid,
12 ... clamp lever, 13 ... cover.
Claims (1)
側ドリップチャンバーに近接して装着される超音波気泡
検出部と、該超音波気泡検出部と隔離して気泡検出部の
電気信号によって血液循環回路の閉塞を行なう血液循環
回路閉塞機構および光学的検知方式による血液循環回路
未装着検出機構を装着した血液循環回路クランプ部とを
有することを特徴とする検出部分離型超音波気泡検出装
置。1. An ultrasonic bubble detector mounted close to a venous drip chamber of a blood circulation circuit in extracorporeal blood circulation, and blood circulation is performed by an electric signal of the bubble detector separated from the ultrasonic bubble detector. A detection unit separated type ultrasonic bubble detection device comprising: a blood circulation circuit closing mechanism for closing a circuit; and a blood circulation circuit clamp unit equipped with a blood circulation circuit non-mounting detection mechanism by an optical detection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63078443A JP2647124B2 (en) | 1988-03-31 | 1988-03-31 | Ultrasonic bubble detector with separate detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63078443A JP2647124B2 (en) | 1988-03-31 | 1988-03-31 | Ultrasonic bubble detector with separate detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01250267A JPH01250267A (en) | 1989-10-05 |
| JP2647124B2 true JP2647124B2 (en) | 1997-08-27 |
Family
ID=13662187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63078443A Expired - Lifetime JP2647124B2 (en) | 1988-03-31 | 1988-03-31 | Ultrasonic bubble detector with separate detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2647124B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10183107B2 (en) | 2014-02-07 | 2019-01-22 | Terumo Kabushiki Kaisha | Tube clamp for extracorporeal circulator and extracorporeal circulation system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011004620B4 (en) * | 2011-02-23 | 2016-02-04 | Fresenius Medical Care Deutschland Gmbh | Apparatus and method for assisting an operator in operating a medical device, and disposable items for a medical device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068521A (en) * | 1976-07-22 | 1978-01-17 | Renal Systems, Inc. | Ultrasonic air and blood foam detector |
| JPS59137733U (en) * | 1983-03-04 | 1984-09-13 | 横河電機株式会社 | dialysis machine |
-
1988
- 1988-03-31 JP JP63078443A patent/JP2647124B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10183107B2 (en) | 2014-02-07 | 2019-01-22 | Terumo Kabushiki Kaisha | Tube clamp for extracorporeal circulator and extracorporeal circulation system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01250267A (en) | 1989-10-05 |
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