JPH0745219Y2 - Dialysate preparation equipment - Google Patents
Dialysate preparation equipmentInfo
- Publication number
- JPH0745219Y2 JPH0745219Y2 JP1988161535U JP16153588U JPH0745219Y2 JP H0745219 Y2 JPH0745219 Y2 JP H0745219Y2 JP 1988161535 U JP1988161535 U JP 1988161535U JP 16153588 U JP16153588 U JP 16153588U JP H0745219 Y2 JPH0745219 Y2 JP H0745219Y2
- Authority
- JP
- Japan
- Prior art keywords
- stock solution
- concentration
- measuring means
- solution pump
- concentration measuring
- 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
Links
Description
【考案の詳細な説明】 「産業上の利用分野」 この考案は腎不全患者の治療に用いられる血液透析装置
へ供給する透析液を調製する透析液調製装置に関する。DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a dialysate preparation device for preparing a dialysate to be supplied to a hemodialysis device used for treating a patient with renal failure.
「従来の技術」 第２図に従来の透析液調製装置を示す。水が供給される
水流路11に対し、第１原液ポンプ12から第１原液が注入
され、その下流に電導計のような濃度計測手段13が設け
られ、更にその下流において水流路11に対し、第２原液
ポンプ14から第２原液が注入され、その下流に濃度計測
手段15が設けられ、更にその下流に濃度計測手段16が設
けられる。濃度計測手段13で計測された濃度と、設定手
段17に設定された目標濃度とが制御器18で演算されて、
その結果により第１原液ポンプ12が制御されて、濃度計
測手段13で計測された濃度が設定手段17に設定された目
標濃度と一致するようにされる。同様に濃度計測手段15
で計測された濃度と、設定手段19に設定された目標濃度
とが制御器21で演算され、その結果により第２原液ポン
プ14が制御されて、濃度計測手段15で計測された濃度が
設定手段19に設定された目標濃度と一致するようにされ
る。"Prior Art" Fig. 2 shows a conventional dialysate preparation device. The first undiluted solution pump 12 injects the first undiluted solution into the water channel 11 to which water is supplied, and a concentration measuring unit 13 such as an electric conductivity meter is provided downstream of the undiluted solution. The second stock solution is injected from the second stock solution pump 14, the concentration measuring means 15 is provided downstream thereof, and the concentration measuring means 16 is further provided downstream thereof. The concentration measured by the concentration measuring unit 13 and the target concentration set in the setting unit 17 are calculated by the controller 18,
As a result, the first stock solution pump 12 is controlled so that the concentration measured by the concentration measuring means 13 matches the target concentration set by the setting means 17. Similarly, the concentration measuring means 15
And the target concentration set in the setting means 19 are calculated by the controller 21, the second stock solution pump 14 is controlled by the result, and the concentration measured by the concentration measuring means 15 is set by the setting means. It is made to match the target density set at 19.
最近の血液透析に用いられる透析液はバイカーボネイト
と呼ばれるものが一般的となっており、この透析液を調
製するためには第１原液、第２原液、水の３液を定量混
合しなければならない。第１原液は塩化ナトリウム、塩
化カリウム、塩化カルシュウム、塩化マグネシュウムの
水溶液であり、第２原液は炭酸水素ナトリウムの水溶液
である。このため第１原液と第２原液とをそのまゝ混合
すると化学変化が起きてしまうため、直接混合すること
はできない。第２図に示したように先ず第１原液を水で
希釈し、次に第２原液を加える。The dialysate used for recent hemodialysis is generally called a bicarbonate, and in order to prepare this dialysate, the first stock solution, the second stock solution, and three solutions of water must be quantitatively mixed. I won't. The first stock solution is an aqueous solution of sodium chloride, potassium chloride, calcium chloride, and magnesium chloride, and the second stock solution is an aqueous solution of sodium hydrogen carbonate. Therefore, if the first undiluted solution and the second undiluted solution are mixed as they are, a chemical change occurs, and thus they cannot be directly mixed. As shown in FIG. 2, first the first stock solution is diluted with water and then the second stock solution is added.
「考案が解決しようとする課題」 しかしこのような方法をとっても化学変化が起り、濃度
計測手段15以後では炭酸カルシュウムが析出する。これ
が濃度計測手段の電極表面に付着し、正常な濃度の計測
ができなくなる。従来においては濃度計測手段15の計測
出力により第２原液ポンプ14を制御しているため、電極
表面に炭酸カルシュウムが付着すると、透析液濃度が変
化してしまう。更に濃度計測手段16においても濃度を計
測しているが、濃度計測手段15と同じ条件にあるのでこ
れを検出できない。"Problems to be solved by the device" However, even if such a method is used, a chemical change occurs, and calcium carbonate is deposited after the concentration measuring means 15. This adheres to the electrode surface of the concentration measuring means, and normal concentration cannot be measured. Conventionally, since the second stock solution pump 14 is controlled by the measurement output of the concentration measuring means 15, if calcium carbonate adheres to the electrode surface, the dialysate concentration will change. Further, although the concentration measuring means 16 also measures the concentration, it cannot be detected because it is under the same conditions as the concentration measuring means 15.
「課題を解決するための手段」 水流路に第１原液を注入する第１原液ポンプと、濃度計
測手段と、第２原液を注入する第２原液ポンプとが順次
下流側に設けられ、濃度計測手段で計測された濃度と、
予め設定された目標濃度とが制御器で演算されて第１原
液ポンプによる注入量が制御され、さらにその注入量に
対し一定の比率の注入量となるように第２原液ポンプに
よる注入量が制御器で制御される。上記一定の比率は比
率設定器により設定される。"Means for Solving the Problem" A first stock solution pump for injecting a first stock solution into a water flow path, a concentration measuring means, and a second stock solution pump for injecting a second stock solution are sequentially provided on the downstream side to measure the concentration. The concentration measured by the means,
The preset target concentration is calculated by the controller to control the injection amount by the first stock solution pump, and further the injection amount by the second stock solution pump is controlled so that the injection rate becomes a constant ratio to the injection amount. Controlled by the vessel. The fixed ratio is set by the ratio setter.
「実施例」 第１図にこの考案の実施例を示し、第２図と対応する部
分には同一符号を付けてある。この実施例においては、
第２原液ポンプ14は濃度計測手段15によっては制御され
ず、制御器22により比率設定器23に設定された比率に応
じて第１原液ポンプ12に対する出力に対し倍率が掛けら
れ、その出力により第２原液ポンプ14が制御される。[Embodiment] FIG. 1 shows an embodiment of the present invention, and parts corresponding to those in FIG. In this example,
The second undiluted solution pump 14 is not controlled by the concentration measuring means 15, and the output to the first undiluted solution pump 12 is multiplied by the output of the first undiluted solution pump 12 according to the ratio set by the controller 22 in the ratio setter 23. 2 The stock solution pump 14 is controlled.
つまり濃度計測手段13の計測濃度と設定手段17で設定さ
れた目標濃度との差が制御器22で演算され、その差がゼ
ロになるように第１原液ポンプ12が制御される。That is, the difference between the measured concentration of the concentration measuring means 13 and the target concentration set by the setting means 17 is calculated by the controller 22, and the first stock solution pump 12 is controlled so that the difference becomes zero.
その制御器22よりの第１原液ポンプ12に対する出力に比
率設定器23に設定された倍率が掛算され、その結果によ
り第２原液ポンプ14が制御される。従って第２原液は予
め設定された倍率で第１原液と比例的に注入され、必要
な濃度の透析液が得られる。The output from the controller 22 to the first stock solution pump 12 is multiplied by the multiplication factor set in the ratio setter 23, and the second stock solution pump 14 is controlled by the result. Therefore, the second undiluted solution is proportionally injected with the first undiluted solution at a preset magnification to obtain a dialysate having a required concentration.
「考案の効果」 この考案によれば第1,第２原液の注入の制御を行うため
の濃度計測手段13は第１原液、第２原液を混合する以前
の水流路に設けられ、この部分においては炭酸カルシュ
ウムが析出することがないので、正しい濃度制御を行う
ことができ、安定した濃度の透析液を長期にわたり供給
することができる。[Advantage of the Invention] According to this invention, the concentration measuring means 13 for controlling the injection of the first and second stock solutions is provided in the water flow path before mixing the first stock solution and the second stock solution. Since calcium carbonate does not precipitate, the correct concentration control can be performed, and a dialysate with a stable concentration can be supplied for a long period of time.
また、比率設定器により第１原液と第２原液との混合比
率を簡易に変えることができるため、極めて使い勝手の
よい透析液調製装置を得ることができる。Further, since the mixing ratio of the first stock solution and the second stock solution can be easily changed by the ratio setting device, it is possible to obtain an extremely convenient dialysate preparation device.
第１図はこの考案の実施例を示すブロック図、第２図は
従来の透析液調製装置を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional dialysate preparation device.
Claims (1)
所定の濃度の透析液を調製する透析液調製装置におい
て、 水が供給される水流路と、 その水流路に第１原液を混合する第１原液ポンプと、 その第１原液の注入点より下流において上記水流路に設
けられた濃度計測手段と、 その濃度計測手段の下流において上記水流路に第２原液
を混合する第２原液ポンプと、 上記濃度計測手段で計測された濃度と、予め設定された
目標濃度とを演算して上記第１原液ポンプによる注入量
を制御すると共に、その注入量に対し一定の比率の注入
量となるように上記第２原液ポンプによる注入量を制御
する制御器と、 上記一定の比率を設定する比率設定器と、 を具備する透析液調製装置。1. A diluting solution of at least two stock solutions for dialysis,
In a dialysate preparation device for preparing a dialysate having a predetermined concentration, a water flow path to which water is supplied, a first stock solution pump for mixing a first stock solution into the water flow path, and a downstream of an injection point of the first stock solution. The concentration measuring means provided in the water flow path, the second stock solution pump for mixing the second stock solution into the water flow path downstream of the concentration measuring means, the concentration measured by the concentration measuring means, and the preset A controller for calculating the target concentration and controlling the injection amount by the first stock solution pump, and controlling the injection amount by the second stock solution pump so that the injection amount has a constant ratio to the injection amount. A dialysate preparation device comprising: a ratio setting device for setting the above-mentioned fixed ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988161535U JPH0745219Y2 (en) | 1988-12-12 | 1988-12-12 | Dialysate preparation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988161535U JPH0745219Y2 (en) | 1988-12-12 | 1988-12-12 | Dialysate preparation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0282345U JPH0282345U (en) | 1990-06-26 |
| JPH0745219Y2 true JPH0745219Y2 (en) | 1995-10-18 |
Family
ID=31444557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988161535U Expired - Lifetime JPH0745219Y2 (en) | 1988-12-12 | 1988-12-12 | Dialysate preparation equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0745219Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2767478B1 (en) * | 1997-08-21 | 1999-10-01 | Hospal Ind | DEVICE AND METHOD FOR ADJUSTING THE CONCENTRATION OF SODIUM IN A DIALYSIS FLUID FOR A PRESCRIPTION |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56164113A (en) * | 1980-05-21 | 1981-12-17 | Nikkiso Co Ltd | Preparation of dialysis solution |
| JPS60241907A (en) * | 1984-05-16 | 1985-11-30 | Yokogawa Hokushin Electric Corp | Liquid supply device |
-
1988
- 1988-12-12 JP JP1988161535U patent/JPH0745219Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0282345U (en) | 1990-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |