JPS63234974A - Water removing amount control apparatus of dialytic apparatus - Google Patents
Water removing amount control apparatus of dialytic apparatusInfo
- Publication number
- JPS63234974A JPS63234974A JP62067461A JP6746187A JPS63234974A JP S63234974 A JPS63234974 A JP S63234974A JP 62067461 A JP62067461 A JP 62067461A JP 6746187 A JP6746187 A JP 6746187A JP S63234974 A JPS63234974 A JP S63234974A
- Authority
- JP
- Japan
- Prior art keywords
- dialysate
- dialyzer
- measuring
- amount
- control means
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 34
- 238000000502 dialysis Methods 0.000 claims description 15
- 239000008280 blood Substances 0.000 claims description 13
- 210000004369 blood Anatomy 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 23
- 238000005303 weighing Methods 0.000 description 14
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000027939 micturition Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Landscapes
- External Artificial Organs (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は血液の透析を行なう透析装置に関し、より詳し
くは除水量を制御する制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a dialysis apparatus for dialysis of blood, and more particularly to a control apparatus for controlling the amount of water removed.
「従来の技術」
一般に透析装置は、透析液を流通させる透析液通路と、
この透析液通路の途中に設けられ、透析液の供給を受け
て血液の透析を行なう透析器と、上記透析液通路に設け
られ、透析液の圧力を制御して上記透析器における除水
量を制御する圧力制御手段とを備えている。"Prior Art" Generally, a dialysis machine has a dialysate passageway through which dialysate flows,
A dialyzer is installed in the middle of this dialysate passage and receives dialysate to perform blood dialysis; and a dialyzer is installed in the dialysate passage and controls the pressure of the dialysate to control the amount of water removed in the dialyzer. and pressure control means.
この種の透析装置においては、血液側の圧力に対して透
析液側の圧力を小さく維持するようにしており、血液中
からの除水量を制御する際には、血液側の圧力に対して
４析液側の圧力を小さく維持したまま両者の圧力差を制
御すわばよく、両者の圧力差を増大させることによって
除水量を増大させ、圧力差を減少させることによって除
水量を減少させることができる。In this type of dialysis machine, the pressure on the dialysate side is kept low compared to the pressure on the blood side, and when controlling the amount of water removed from the blood, the pressure on the blood side is It is only necessary to control the pressure difference between the two while keeping the pressure on the precipitation liquid side small; by increasing the pressure difference between the two, the amount of water removed can be increased, and by decreasing the pressure difference, the amount of water removed can be decreased. .
そして従来の透析装置の除水量制御装置として、血液側
圧力と透析液側圧力とを測定してその圧力差が所定値と
なるように制御するようにしたものや（特開昭６０−２
４１４４９号）、透析器へ供給する透析液の供給量と、
透析器から排出される排出量とを同一に制御して余剰分
を除水量として検出し、その除水量が所定値となるよう
に制御するようにしたもの（特公昭５５−１２２６２号
、特開昭５３−１４２３８２号）、ざらには７弘者の体
重変化を測定し、減少分を除水量としてその除水量が所
定値となるように制御するようにしたもの（特開昭５６
−２３９６２号）等が知られている。As a conventional water removal amount control device for a dialysis machine, there is a device that measures the pressure on the blood side and the pressure on the dialysate side and controls the pressure difference so that it becomes a predetermined value (JP-A-60-2
No. 41449), the amount of dialysate supplied to the dialyzer,
A system in which the amount of water discharged from the dialyzer is controlled to be the same as that of the dialyzer, the excess amount is detected as the amount of water removed, and the amount of water removed is controlled to be a predetermined value (Japanese Patent Publication No. 55-12262, (No. 142382/1982), in which changes in the body weight of 7 people were measured and the weight loss was taken as the amount of water removed and the amount of water removed was controlled to a predetermined value (Japanese Patent Application Laid-Open No. 1983-14238).
-23962) etc. are known.
「発明が解決しようとする問題点」
しかるに、血液側圧力と透析液側圧力とを測定するよう
にしたものでは、直接除水量を検出していないので高精
度な管理を行なうことに一定の限界があフた。また透析
液の供給量と排出量とを同一に制御して余剰分を除水量
として検出するようにしたものにあっても、透析器へ透
析液を連続的に供給しながら上記余剰分を高精度に計量
することが困難ないしはそのための装置が高価になり、
さらに患者の体重変化を測定する場合には患者の飲食、
排尿、発汗等があるので、やはり高精度な管理が困難で
あった。``Problems to be Solved by the Invention'' However, the method that measures blood side pressure and dialysate side pressure does not directly detect the amount of water removed, so there is a certain limit to high-precision management. There was a flash. Furthermore, even if the supply amount and discharge amount of dialysate are controlled to be the same and the excess amount is detected as the amount of water removed, the above-mentioned surplus amount is increased while continuously supplying dialysate to the dialyzer. It is difficult to measure accurately or the equipment for this is expensive.
Furthermore, when measuring the patient's weight change, the patient's eating and drinking,
Because of urination, sweating, etc., highly accurate management was difficult.
「問題点を解決するための手段」
本発明はそのような事情に鑑み、上述した透析装置にお
いて、上記透析器よりも上流側の透析液通路に設けられ
、その透析器に供給する透析液の供給重量を計測する第
１計量手段と、この第１計量手段で計量された透析液が
上記透析器を流通するのに要する流通時間を計測するタ
イマと、上記圧力制御手段よりも下流側の透析液通路に
設けられ、上記流通時間内に上記透析器から排出された
透析液を貯留してその排出重量を計測する第２計量手段
と、さらに、上記供給重量と排出重量との差と上記流通
時間とから単位時間当りの除水量を演算検出し、この検
出値に基いて上記圧力制御手段を制御して透析器の除水
量を予め定めた所定量となるように制御する演算制御手
段とを設けたものである。"Means for Solving the Problems" In view of such circumstances, the present invention provides a dialysate passage provided in the dialysate passage upstream of the dialyzer in the above-mentioned dialysis machine to supply the dialysate to the dialyzer. a first measuring means for measuring the supplied weight; a timer for measuring the flow time required for the dialysate measured by the first measuring means to flow through the dialyzer; and a dialysis device located downstream of the pressure controlling means. a second measuring means provided in the liquid passage for storing the dialysate discharged from the dialyzer during the distribution time and measuring the discharge weight; and further measuring the difference between the supply weight and the discharge weight and the distribution. calculation control means for calculating and detecting the amount of water removed per unit time from the time and controlling the pressure control means based on the detected value so that the amount of water removed from the dialyzer becomes a predetermined amount; It was established.
「作用」
上記構成によれば、透析器への供給重量と排出重量との
差から除水量を検出でき、しかも重量は比較的安価な装
置であっても高精度な計測を行なうことができるので、
安価にしかも高１ｎ度に除水量を管理することが可能と
なる。"Function" According to the above configuration, the amount of water removed can be detected from the difference between the weight supplied to the dialyzer and the weight discharged, and the weight can be measured with high precision even with a relatively inexpensive device. ,
It becomes possible to control the amount of water removed to a high degree at a low cost.
「実施例」
以下図示実施例について本発明を説明すると、第１図に
おいて、透析器１は血液を流通させる血液通路２と、透
析液を流通させる透析液通路３との途中に共通に設けて
あり、膜４を介して上記血液通路２を流通する血液と透
析液通路３を流通する透析液との間で透析を行なうこと
ができるようになっている。``Embodiment'' The present invention will be described below with reference to an illustrated embodiment. In FIG. 1, a dialyzer 1 is provided in common between a blood passage 2 through which blood flows and a dialysate passage 3 through which dialysate flows. Dialysis can be performed between the blood flowing through the blood passage 2 and the dialysate flowing through the dialysate passage 3 via the membrane 4.
上記透析液通路３はその最上流側に管５を備えており、
透析液は先ずこの管５から貯液タンク６内に供給される
。この貯液タンク６内の透析液は、次にその出口側の管
７からこれを開閉する電磁弁８を介して、上記透析器１
に供給する透析液の供給重量を計測する第１計量手段９
に供給される。The dialysate passage 3 is equipped with a pipe 5 on its most upstream side,
Dialysate is first supplied into the liquid storage tank 6 from this tube 5 . The dialysate in this liquid storage tank 6 is then transferred from a pipe 7 on the outlet side to the dialyzer 1 via a solenoid valve 8 that opens and closes it.
a first measuring means 9 for measuring the weight of the dialysate supplied to the
is supplied to
この第１計量手段９は、透析液を貯溜する第１計量タン
クｌＯと、この第１計量タンクｌＯの重量を計測する第
１重量計１１とを備えており、上記第１計量タンクＩＯ
の出口側の管１２にもこれを開閉する電磁弁１３を設け
ている。上記第１重量計１１による計量信号はマイクロ
コンピュータを含む演算制御手段１４に入力され、この
演算制御手段１４は空の第１計量タンクＩＯの重量と、
上記両室磁片８．１２を閉じて第１計堂タンクｌＯ内に
透析液を封入した際の重量との差から、透析液の供給重
量を検出できるようになっている。The first weighing means 9 includes a first weighing tank IO for storing dialysate, and a first weighing scale 11 for measuring the weight of the first weighing tank IO.
A solenoid valve 13 for opening and closing the pipe 12 on the outlet side of the pipe 12 is also provided. The weighing signal from the first weighing scale 11 is input to the arithmetic and control means 14 including a microcomputer, and this arithmetic and control means 14 calculates the weight of the empty first weighing tank IO,
The supplied weight of the dialysate can be detected from the difference between the weight when the double-chamber magnetic pieces 8 and 12 are closed and the dialysate is sealed in the first chamber tank lO.
上記第１計量タンク１０の出口側の管１２は第１予備タ
ンク１５に連通しており、上記第１計量手段９による計
量が終了した透析液はその第１予備タンク１５に貯溜さ
れ、この第１予備タンク１５内の透析液がポンプ１６に
より管１７を介して上記透析器１に供給される。The pipe 12 on the outlet side of the first measuring tank 10 communicates with a first reserve tank 15, and the dialysate that has been measured by the first measuring means 9 is stored in the first reserve tank 15. 1 The dialysate in the reserve tank 15 is supplied to the dialyzer 1 through a pipe 17 by a pump 16.
上記第１予備タンク１５にはその内部の透析液の液面を
検出する液面検出器１８を設けてあり、上記演算制御手
段１４はこの液面検出器１８からの信号を人力して第１
予備タンク１５内の透析液の残量が少なくなったことを
検出すると、電磁弁１３を開放させて計量の終了した第
１計量タンク１０内の透析液を第１予備タンク１５に供
給するようになっている。The first reserve tank 15 is provided with a liquid level detector 18 for detecting the level of the dialysate therein, and the calculation control means 14 manually inputs the signal from the liquid level detector 18 to
When it is detected that the remaining amount of dialysate in the reserve tank 15 is low, the electromagnetic valve 13 is opened to supply the dialysate in the first metering tank 10 that has been measured to the first reserve tank 15. It has become.
また後に詳述するように、上記演算制御手段１４はタイ
マを内臓しており、液面検出器１８からの信号によりそ
のタイマをリセットするとともに時間の計測を開始して
、上記第１計量手段９で計量された透析液が上記透析器
１を流通するのに要する流通時間を計測することができ
るようになっている。Further, as will be described in detail later, the arithmetic control means 14 has a built-in timer, and resets the timer based on a signal from the liquid level detector 18 and starts measuring time. The flow time required for the measured dialysate to flow through the dialyzer 1 can be measured.
然して、上記透析器１の排出側の管２１には、透析器１
から排出される透析液の圧力を制御して、上記透析器１
における除水量を制御する圧力制御手段２２を設けてい
る。この圧力制御手段２２としては、透析器１から透析
液を吸引排出する陰圧ポンプを用いることができ、上記
演算制御手段１４によってその陰圧ポンプの運転速度を
制御し、或いは陽圧ポンプ内における透析液の還流量を
制御する等により、陰圧ポンプを流通する透析液の流量
を制御して透析液の圧力を、したがって除水量を制御す
ることができる。However, the dialyzer 1 is connected to the discharge side pipe 21 of the dialyzer 1.
The dialyzer 1 is controlled by controlling the pressure of the dialysate discharged from the dialyzer 1.
A pressure control means 22 is provided to control the amount of water removed. As this pressure control means 22, a negative pressure pump that sucks and discharges dialysate from the dialyzer 1 can be used, and the operating speed of the negative pressure pump is controlled by the arithmetic control means 14, or By controlling the flow rate of the dialysate flowing through the negative pressure pump, the pressure of the dialysate and therefore the amount of water removed can be controlled by controlling the flow rate of the dialysate flowing through the negative pressure pump.
さらに、上記透析器１の排出側の管２１は第２予備タン
ク２３に連通しており、この第２予備タンク２３の出口
側の管２４は電磁弁２５を介して第２計量手段２６に連
通している。Further, a pipe 21 on the discharge side of the dialyzer 1 communicates with a second reserve tank 23, and a pipe 24 on the outlet side of the second reserve tank 23 communicates with a second measuring means 26 via a solenoid valve 25. are doing.
上記第２計量手段２６は、第１計量手段９と同様に、第
２計量タンク２７と、この第２計量タンク２７の重量を
計測する第２重量計２８と、第２計量タンク２７の出口
側の管２９に設けた電磁弁３０とを備えており、上記演
算制御手段１４は第２重量計２８による計量信号から、
上記透析器１から排出された透析液の排出重量を計測で
きるようになっている。Like the first measuring means 9, the second measuring means 26 includes a second measuring tank 27, a second weighing scale 28 for measuring the weight of the second measuring tank 27, and an outlet side of the second measuring tank 27. and a solenoid valve 30 provided in the pipe 29, and the calculation control means 14 receives the weighing signal from the second weighing scale
The weight of the dialysate discharged from the dialyzer 1 can be measured.
以上の構成において、第１計量手段９によって既に計量
が行なわれ、かつ第１予備タンク１５内に供給されてい
る供給重量Ｗ１の透析液は、ポンプ１６により透析器１
に供給されるとともに、圧力制御手段２２を介して第２
予備タンク２３に流入し、さらに電磁弁２５を介して第
２計量手段２６の第２計量タンク２７内に流入している
。In the above configuration, the dialysate having a supply weight W1 that has already been measured by the first measuring means 9 and is supplied into the first preliminary tank 15 is transferred to the dialyzer by the pump 16.
and the second via the pressure control means 22.
It flows into the reserve tank 23 and further flows into the second metering tank 27 of the second metering means 26 via the solenoid valve 25.
この際には、透析器１内の透析液の圧力は上記圧力制御
手段２２によって制御されており、それによって所要の
除水量が得らえている。またこの際には電磁弁３０は閉
鎖されており、したがって第１予備タンク１５内から透
析器１内を流通した透析液は第２計量タンク２７内に貯
溜されるようになる。At this time, the pressure of the dialysate in the dialyzer 1 is controlled by the pressure control means 22, thereby obtaining the required amount of water removal. Further, at this time, the solenoid valve 30 is closed, so that the dialysate flowing through the dialyzer 1 from the first preliminary tank 15 is stored in the second metering tank 27.
さらに電磁弁１３が閉じ、電磁弁８が開放されているの
で、貯液タンク６内の透析液および管５を流通してきた
透析液は、第１計量タンク１０内に貯溜される。Further, since the solenoid valve 13 is closed and the solenoid valve 8 is opened, the dialysate in the liquid storage tank 6 and the dialysate that has flowed through the pipe 5 are stored in the first metering tank 10.
上記演算制御手段１４は、電磁弁１３を閉鎖した状態で
電磁弁８を開放してから所要時間経過すると電磁弁８を
閉じ、それによって第１計量タンクｌ。The arithmetic control means 14 opens the solenoid valve 8 with the solenoid valve 13 closed and then closes the solenoid valve 8 when a required period of time has elapsed, thereby causing the first metering tank l to close.
内に概略所定量の透析液を貯溜する。そして電磁弁８が
閉じられると、管５から供給される透析液は貯液タンク
６内に貯溜されるようになる。Approximately a predetermined amount of dialysate is stored in the chamber. When the electromagnetic valve 8 is closed, the dialysate supplied from the pipe 5 is stored in the liquid storage tank 6.
上記電磁弁８．１３を閉じて第１計量タンク１０内に透
析液を密封すると、上記演算制御手段１４は予め計測し
てあった空の第１計量タンクｌＯの重量と、上記両室磁
片８．１３を閉じて第１計量タンク１０内に透析液を封
入した際の重量との差から、その透析液の供給重量Ｗ２
を検出してこれを記憶する。When the electromagnetic valve 8.13 is closed and the dialysate is sealed in the first measuring tank 10, the arithmetic and control means 14 calculates the weight of the empty first measuring tank lO that has been measured in advance and the double-chamber magnetic piece. 8.13 is closed and the dialysate is sealed in the first measuring tank 10. From the difference in weight, the supply weight W2 of the dialysate is determined.
Detect and store this.
第１予備タンク１５内の透析液が透析器１に供給されて
その内部の液面が所定高さまで低下すると、液面検出器
１８がその状態を検出するようになる。上記演算制御手
段１４は、この液面検出器１８からの信号を入力すると
電磁弁１３を開放するとともに電磁弁２５を閉鎖させ、
さらに内臓のタイマをリセットして時間のカウントを開
始する。When the dialysate in the first preliminary tank 15 is supplied to the dialyzer 1 and the liquid level therein drops to a predetermined height, the liquid level detector 18 comes to detect this state. When the arithmetic control means 14 receives the signal from the liquid level detector 18, it opens the solenoid valve 13 and closes the solenoid valve 25.
It also resets the built-in timer and starts counting time.
上記電磁弁１３が開放されると、第１計量タンクｌＯ内
の透析液が第１予備タンク１５に供給されて液面が上昇
するので、ポンプ１６は継続して第１予備タンク１５内
の透析液を透析器１に供給することができる。そして第
１計量タンクｌＯ内の全透析液が第１予備タンク１５に
供給されると、電磁弁１３が閉鎖された後、電磁弁８が
開放されて再び第１計量タンクｌＯ内に透析液が供給さ
れる。When the electromagnetic valve 13 is opened, the dialysate in the first metering tank lO is supplied to the first reserve tank 15 and the liquid level rises, so the pump 16 continues to pump the dialysate in the first reserve tank 15. The fluid can be supplied to the dialyzer 1. When all the dialysate in the first metering tank IO is supplied to the first reserve tank 15, the solenoid valve 13 is closed, and then the solenoid valve 8 is opened and the dialysate is supplied into the first metering tank LO again. Supplied.
他方、上記電磁弁２５が閉鎖されると、これと他の電磁
弁３０とによって第２計量タンク２７内に透析器の透析
液を密封することができる。この際には、透析器１から
継続して排出される透析液は、第２予備タンク２３内に
貯溜されるようになる。On the other hand, when the solenoid valve 25 is closed, it and the other solenoid valve 30 can seal the dialysate in the second metering tank 27 . At this time, the dialysate continuously discharged from the dialyzer 1 is stored in the second reserve tank 23.
上記２つの電磁弁２５．３０を閉じて第２計量タンク２
７内に透析器の透析液を密封すると、上記演算制御手段
１４は予め計測してあった空の第２計量タンク２７の重
量と、上記両型、磁片２５．３０を閉じて第２計量タン
ク２７内に透析液を封入した際の重量との差から、透析
液の排出重量ｗ１ ’を検出してこれを記憶する。Close the two solenoid valves 25 and 30 above to close the second metering tank 2.
When the dialysate of the dialyzer is sealed in the chamber 7, the arithmetic control means 14 calculates the weight of the empty second measuring tank 27, which has been measured in advance, and closes the magnetic pieces 25 and 30 to perform the second measuring. The discharge weight w1' of the dialysate is detected from the difference between the weight when the dialysate is sealed in the tank 27, and this is stored.
上記排出重量１／ｉ １ ’の検出が終了したら、上記
演算制御手段１４は上記電磁弁３０を開放して第２計量
タンク２７内の全透析液を外部に排出し、次にこの電磁
弁３０を閉じた後に電磁弁２５を開放して、第２予備タ
ンク２３に貯溜されていた透析液および透析器１から排
出される透析液を第２計量タンク２７内に貯溜させる。When the detection of the discharge weight 1/i 1 ' is completed, the arithmetic control means 14 opens the solenoid valve 30 to discharge all the dialysate in the second measuring tank 27 to the outside, and then the solenoid valve 30 After closing, the electromagnetic valve 25 is opened, and the dialysate stored in the second preliminary tank 23 and the dialysate discharged from the dialyzer 1 are stored in the second metering tank 27.
そして第１予備タンク１５内に供給された供給重量Ｗ２
の透析液の液面が再び所定高さまで低下すると、演算制
御手段１４は上述の作動を繰返して、排出型ｆｆ１Ｗ２
’を検出するようになる。And the supply weight W2 supplied into the first reserve tank 15
When the level of the dialysate drops to a predetermined level again, the calculation control means 14 repeats the above-mentioned operation, and the discharge type ff1W2
' will now be detected.
以上の作動から理解されるように、本実施例においては
、第１予備タンク１５内の液面が所定高さまで低下した
らその瞬間に電磁弁２５を閉じ、この状態で第１予備タ
ンク１５内に計量済の所定重量Ｗ１の透析液を供給する
。これと同時に上記電磁弁２５を閉じたら、その状態の
まま電磁弁３０を開放させて第２計量タンク２７を空に
し、次にその電磁弁３０を閉じてから再び電磁弁２５を
開放させる。As can be understood from the above operation, in this embodiment, the solenoid valve 25 is closed at the moment when the liquid level in the first reserve tank 15 drops to a predetermined height, and in this state, the liquid level in the first reserve tank 15 is lowered to a predetermined level. A measured dialysate having a predetermined weight W1 is supplied. At the same time, when the solenoid valve 25 is closed, the solenoid valve 30 is opened in that state to empty the second metering tank 27, and then the solenoid valve 30 is closed and the solenoid valve 25 is opened again.
したがって、第１予備タンク１５内に供給された所定重
量Ｗ１の透析液は、透析器１を流通して第２計量タンク
２７内に貯溜されるようになる。そして上記第１予備タ
ンク、１５内の液面が再び所定高さまで低下したら、そ
°の瞬間に電磁弁２５を閉じて透析器の透析液を第２計
量タンク２７内に密封する。Therefore, the dialysate having a predetermined weight W1 supplied into the first reserve tank 15 flows through the dialyzer 1 and is stored in the second measuring tank 27. When the liquid level in the first reserve tank 15 drops to a predetermined level again, the electromagnetic valve 25 is immediately closed to seal the dialysate in the second metering tank 27.
その結果、上記液面検出器１８が第１予備タンク１５内
の液面が所定高さとなったことを検出した後、その第１
予備タンク１５内に供給重量Ｗ１を供給してから再び液
面検出器１８が第１予備タンク１５内の液面が所定高さ
となったことを検出するまでの間に透析器１に供給され
る透析液の供給重量は、上記第１予備タンク１５内に供
給した供給重量Ｗ１に一致し、この供給重量Ｗ１の透析
液が透析器１に供給された際に、その透析器１から排出
された透析液の排出重量は一上記第２予備タンク２７内
に密封された透析液の排出重量Ｗｉ ’ に一致する。As a result, after the liquid level detector 18 detects that the liquid level in the first preliminary tank 15 has reached a predetermined height, the first
The water is supplied to the dialyzer 1 after the supply weight W1 is supplied into the reserve tank 15 until the liquid level detector 18 again detects that the liquid level in the first reserve tank 15 has reached a predetermined height. The supply weight of the dialysate corresponds to the supply weight W1 supplied into the first preliminary tank 15, and when the dialysate of this supply weight W1 is supplied to the dialyzer 1, the dialysate is discharged from the dialyzer 1. The discharged weight of the dialysate corresponds to the discharged weight Wi' of the dialysate sealed in the second preliminary tank 27.
したがって、透析器の排出重量Ｗｉ’からそれに対応す
る供給重量Ｗ１を引けば、透析器１における除水量を演
算検出することができる。そしてこの際には直接上記供
給重量Ｗ１および排出重量Ｗ１′を検出するようにして
いるので、透析液中に微少な気泡が存在していたとして
も、正確に除水量を検出することができる。Therefore, by subtracting the corresponding supply weight W1 from the discharge weight Wi' of the dialyzer, the amount of water removed in the dialyzer 1 can be calculated and detected. At this time, since the supplied weight W1 and the discharged weight W1' are directly detected, the amount of water removed can be accurately detected even if minute bubbles are present in the dialysate.
ところで、上記演算制御手段１４は液面検出器１８から
の信号を受けた際に、内臓のタイマをリセットして時間
のカウントを開始させるので、最初に液面検出器１８か
らの信号を受けてから次に液面検出器１８からの信号を
受けるまでの間の経過時間を、したがって上記供給重量
Ｗ１の透析液が上記透析器１を流通するのに要する流通
時間を計測することができる。By the way, when the arithmetic control means 14 receives the signal from the liquid level detector 18, it resets the built-in timer and starts counting the time. The elapsed time from then until the next signal is received from the liquid level detector 18 can be measured, and thus the flow time required for the dialysate of the supply weight W1 to flow through the dialyzer 1 can be measured.
上記演算制御手段１４は、上記供給重量Ｗ１と排出重量
Ｗ１′との差と、上記流通時間とから、単位時間当りの
除水量を演算検出することができ、その検出値が予め定
めた目標値よりも小さい場合には透析液側と血液側の圧
力差を増大させて除水量を増大させるように、逆の場合
には圧力差を低下させて除水量を減少させるように上記
圧力制御手段２２を制御する。なお上記目標値は、透析
時間の経過に伴なって適宜に変動させて設定できること
は勿論である。The calculation control means 14 can calculate and detect the amount of water removed per unit time from the difference between the supply weight W1 and the discharge weight W1' and the distribution time, and the detected value is a predetermined target value. When the pressure difference is smaller than , the pressure difference between the dialysate side and the blood side is increased to increase the amount of water removed, and in the opposite case, the pressure difference is lowered and the amount of water removed is decreased. control. It goes without saying that the target value can be changed and set as appropriate as the dialysis time progresses.
第２図は本発明の他の実施例を示したもので、上記実施
例との差異は、第１計量手段９の第１計量タンクｌＯを
所定容積に設定するとともに、この第１計量タンク１０
内に透析液が充満されたことを検出する検出器３５を設
け、さらに第１重量計１１を省略したものである。FIG. 2 shows another embodiment of the present invention, which differs from the above embodiment in that the first measuring tank lO of the first measuring means 9 is set to a predetermined volume, and the first measuring tank 10 is set to a predetermined volume.
A detector 35 is provided to detect whether the inside is filled with dialysate, and the first weighing scale 11 is omitted.
上記第１計量タンクｌＯ内に常に一定容積の透析液を貯
溜させるようにすれば、その容積から常に一定の透析液
の供給重量を得ることができることは明らかである。It is clear that if a constant volume of dialysate is always stored in the first measuring tank IO, a constant supply weight of dialysate can always be obtained from the volume.
第３図に示した実施例は、第１図の実施例から貯液タン
ク６を省略し、その代りに並列接続した２つの第１計量
手段９．９とそれぞれの前後の電磁弁８．１３とを設け
ており、さらに必要に応じて排出側にも並列接続した２
つの第２計量手段２６．２６とそれぞれの前後の電磁弁
２５．３０とを設けたものである。In the embodiment shown in FIG. 3, the liquid storage tank 6 is omitted from the embodiment shown in FIG. In addition, if necessary, two parallel connections are made on the discharge side.
Two second measuring means 26.26 and respective front and rear solenoid valves 25.30 are provided.
本実施例においては、一方の第１計量手段９で透析液の
重量を計測している際に、他方の第１計量手段９に透析
液を貯溜させることができる。In this embodiment, while one first measuring means 9 is measuring the weight of the dialysate, the other first measuring means 9 can store the dialysate.
さらに第４図に示した実施例は、第２図に示した実施例
について第３図と同様な変更を加えたものであり、また
第５図および第６図の実施例はそれぞれ第３図および第
４図から第１予備タンク１５と第２予備タンク２３とを
省略したものである。Furthermore, the embodiment shown in FIG. 4 is the embodiment shown in FIG. 2 with the same changes as in FIG. 3, and the embodiments shown in FIGS. Also, the first reserve tank 15 and the second reserve tank 23 are omitted from FIG. 4.
上記第５図および第６図に示す実施例においては、並列
に接続された電磁弁１３の一方の開放時から他方の電磁
弁１３が開放されるまでの間が、上記一方の電磁弁１３
側の第１計量手段９の透析液が上記透析器１を流通する
のに要する流通時間となる。In the embodiment shown in FIGS. 5 and 6, the period from when one of the solenoid valves 13 connected in parallel is opened until the other solenoid valve 13 is opened is
This is the flow time required for the dialysate in the first measuring means 9 on the side to flow through the dialyzer 1.
なお、タイムサイクル的に、第１計量手段１回に対し、
第２計量手段１回の対応だけでなく、第１計量手段複数
回に対して、第２計量手段１回の計量を行い本文と同様
のコントロールを行ってもよい。In addition, in terms of time cycle, for one time of the first measuring means,
Not only the second measuring means may be used once, but the second measuring means may perform the measurement once for the first measuring means multiple times to perform the same control as in the main text.
「発明の効果」
以上のように、本発明においては、透析液の重量から除
水量を検出するようにしているので、従来に比較して安
価にしかも高蹟度に除水量を管理することができるとい
う効果が得られる。"Effects of the Invention" As described above, in the present invention, since the amount of water removed is detected from the weight of the dialysate, it is possible to manage the amount of water removed at a lower cost and with a greater degree than in the past. You can get the effect that you can.
第１図は本発明の一実施例を示す配管系統図、第２図な
いし第６図はそれぞれ本発明の他の実施例を示す配管系
統図である。
１・・・透析器 ２・・・血液通路３・・・透
析通路 ９・・・第１計量手段１０・・・第１計
量タンク １１・・・第１重量計１４・・・演算制御装
置 ２２・・・圧力制御手段２６・・・第２計２手段
２７−・・第２計量タンク２８・・・第２重量計FIG. 1 is a piping system diagram showing one embodiment of the present invention, and FIGS. 2 to 6 are piping system diagrams showing other embodiments of the invention, respectively. DESCRIPTION OF SYMBOLS 1... Dialyzer 2... Blood passage 3... Dialysis passage 9... First measuring means 10... First measuring tank 11... First weighing scale 14... Arithmetic control device 22 ...Pressure control means 26...Second meter 2 means 27-...Second weighing tank 28...Second weighing scale
Claims (2)
路の途中に設けられ、透析液の供給を受けて血液の透析
を行なう透析器と、上記透析液通路に設けられ、透析液
の圧力を制御して上記透析器における除水量を制御する
圧力制御手段とを備えた透析装置において、 上記透析器よりも上流側の透析液通路に設けられ、その
透析器に供給する透析液の供給重量を計測する第１計量
手段と、この第１計量手段で計量された透析液が上記透
析器を流通するのに要する流通時間を計測するタイマと
、上記圧力制御手段よりも下流側の透析液通路に設けら
れ、上記流通時間内に上記透析器から排出された透析液
を貯留してその排出重量を計測する第２計量手段と、さ
らに、上記供給重量と排出重量との差と上記流通時間と
から単位時間当りの除水量を演算検出し、この検出値に
基いて上記圧力制御手段を制御して透析器の除水量を予
め定めた所定量となるように制御する演算制御手段とを
設けたことを特徴とする透析装置の除水量制御装置。(1) A dialysate passage through which dialysate flows; a dialyzer installed in the middle of this dialysate passage to receive dialysate and perform blood dialysis; A dialysis apparatus equipped with a pressure control means for controlling the amount of water removed in the dialyzer by controlling the pressure, provided in a dialysate passageway upstream of the dialyzer, and supplying dialysate to the dialyzer. a first measuring means for measuring weight; a timer for measuring the flow time required for the dialysate measured by the first measuring means to flow through the dialyzer; and a dialysate downstream of the pressure control means. a second measuring means provided in the passage for storing the dialysate discharged from the dialyzer during the circulation time and measuring the discharge weight; and calculation control means for calculating and detecting the amount of water removed per unit time from the above, and controlling the pressure control means based on this detected value so that the amount of water removed from the dialyzer becomes a predetermined amount. A water removal amount control device for a dialysis machine characterized by the following.
する陰圧ポンプから構成され、上記演算制御手段がその
陰圧ポンプを流通する透析液の流量を制御して透析液の
圧力を制御することを特徴とする特許請求の範囲第１項
に記載の透析装置の除水量制御装置。(2) The pressure control means is composed of a negative pressure pump that sucks and discharges dialysate from the dialyzer, and the calculation control means controls the flow rate of the dialysate flowing through the negative pressure pump to control the pressure of the dialysate. A water removal amount control device for a dialysis machine according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62067461A JPS63234974A (en) | 1987-03-20 | 1987-03-20 | Water removing amount control apparatus of dialytic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62067461A JPS63234974A (en) | 1987-03-20 | 1987-03-20 | Water removing amount control apparatus of dialytic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63234974A true JPS63234974A (en) | 1988-09-30 |
Family
ID=13345611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62067461A Pending JPS63234974A (en) | 1987-03-20 | 1987-03-20 | Water removing amount control apparatus of dialytic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63234974A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007236924A (en) * | 2006-02-07 | 2007-09-20 | Jms Co Ltd | Blood purification apparatus |
| JP2007236923A (en) * | 2006-02-07 | 2007-09-20 | Jms Co Ltd | Blood purification circuit |
| US9011678B2 (en) | 2006-02-07 | 2015-04-21 | Jms Co., Ltd. | Blood purification apparatus and blood purification circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6124056B2 (en) * | 1981-07-13 | 1986-06-09 | Hitachi Ltd |
-
1987
- 1987-03-20 JP JP62067461A patent/JPS63234974A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6124056B2 (en) * | 1981-07-13 | 1986-06-09 | Hitachi Ltd |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007236924A (en) * | 2006-02-07 | 2007-09-20 | Jms Co Ltd | Blood purification apparatus |
| JP2007236923A (en) * | 2006-02-07 | 2007-09-20 | Jms Co Ltd | Blood purification circuit |
| US9011678B2 (en) | 2006-02-07 | 2015-04-21 | Jms Co., Ltd. | Blood purification apparatus and blood purification circuit |
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