JPH05168703A - Pump with meter - Google Patents
Pump with meterInfo
- Publication number
- JPH05168703A JPH05168703A JP3361101A JP36110191A JPH05168703A JP H05168703 A JPH05168703 A JP H05168703A JP 3361101 A JP3361101 A JP 3361101A JP 36110191 A JP36110191 A JP 36110191A JP H05168703 A JPH05168703 A JP H05168703A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- level sensor
- liquid level
- liquid
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- External Artificial Organs (AREA)
Abstract
(57)【要約】
【目的】ＩＣＵ、ＣＣＵ他で施行される血液浄化に於い
て、中空糸膜モジュール等により濾過、除去される水分
と透析液或いは補液との均衡を図るため、透析液或いは
補液の量を正確に定量、供給する。
【構成】透析液或いは補液の容器と、それらを供給する
ポンプとの流路中に、容積計量器を接続し、運転開始時
或いはその他必要に応じて供給量を計量する。
(57) [Abstract] [Purpose] In blood purification performed by ICU, CCU, etc., in order to balance the water content filtered and removed by the hollow fiber membrane module with the dialysate or replacement fluid, Accurately measure and supply the amount of replacement fluid. [Structure] A volume meter is connected in the flow path between a container for dialysate or replacement fluid and a pump for supplying them, and the supply amount is measured at the start of operation or when necessary.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水分、代謝産物等を濾
過分離し、有用物質を補給し、生体の臓器機能を補助或
いは代行する血液浄化装置に使用される計量器を備えた
ポンプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump provided with a meter used in a blood purification apparatus for filtering and separating water, metabolites, etc., supplying useful substances, and assisting or substituting organ functions of a living body. ..
【０００２】[0002]
【従来の技術】従来より、医療用装置機器にはローラー
ポンプが多用されており、ポンプの回転数から流量を算
出する場合も多い。又、特開平１−８６９７７号公報に
は、計量瓶で流量を計量する方法が開示されている。2. Description of the Related Art Conventionally, a roller pump has been widely used in medical equipment and the flow rate is often calculated from the number of rotations of the pump. Further, Japanese Patent Laid-Open No. 1-86977 discloses a method of measuring the flow rate with a measuring bottle.
【０００３】[0003]
【本発明の解決すべき課題】しかしながら、ローラーポ
ンプに使用されているチューブは通常塩化ビニール等の
プラスチック製であるため、流体圧の変化或いは長時間
使用によるチューブの復元力の低下、伸び等により変形
を生じ、この変形は流量精度に直接影響を及ぼす。又、
特開平１−８６９７７号公報に開示された計量瓶では、
多数の開閉弁を必要とし、配管も複雑であり、そのため
装置の大型化は避けられず、ＩＣＵ、ＣＣＵ等の狭小な
場所に於ける治療に使用するには問題がある。However, since the tube used in the roller pump is usually made of plastic such as vinyl chloride, there is a possibility that the change in the fluid pressure or the decrease in the restoring force of the tube due to long-term use, elongation, etc. Deformation occurs, which directly affects the flow rate accuracy. or,
In the measuring bottle disclosed in JP-A-1-86977,
Since a large number of on-off valves are required and the piping is complicated, the size of the device is inevitably increased, and there is a problem in using it for treatment in a narrow place such as ICU or CCU.
【０００４】ＩＣＵ、ＣＣＵ等に入室する患者は、合併
症を持つ者が多いため、それらの患者への治療は単一の
手段では行い得ず、患者のベッドサイドには多くの治療
器具が設置されることとなり、このため、ＩＣＵ、ＣＣ
Ｕ等で使用される治療器具には、性能が優れていること
はもとより、可能な限り小型であること、取り扱いが容
易であることなどが要求される。Since many patients who enter the ICU, CCU, etc. have complications, it is not possible to treat them with a single means, and many treatment devices are installed at the bedside of the patient. Therefore, ICU, CC
The therapeutic instrument used in U and the like is required to have not only excellent performance, but also to be as small as possible and easy to handle.
【０００５】しかしながら、従来は、ＩＣＵ、ＣＣＵ等
での治療に於いては、血液ポンブ、濾液ポンプ、薬剤注
入ポンプなどを単体で使用しているか或いは血液浄化装
置として単体にまとめられてはいるものの、大型であっ
て、取扱いの不便な装置を使用しているため、ベッドサ
イドの空間の多くはこれらの機器で占められることとな
り、医師等が迅速に効果的に治療をし得ない状況となっ
ている。本発明は上記の状況を改善するための、小型軽
量であって、操作性の極めて優れた血液浄化装置に使用
される計量器を備えたポンプを提供することを目的とす
る。However, conventionally, in the treatment with ICU, CCU, etc., although a blood pump, a filtrate pump, a drug infusion pump, etc. are used alone, or as a blood purification apparatus, they are integrated together. However, due to the large size and inconvenient handling of these devices, most of the bedside space will be occupied by these devices, making it difficult for doctors and others to provide treatment quickly and effectively. ing. It is an object of the present invention to provide a pump having a measuring device, which is small and lightweight and has excellent operability and which is used in a blood purification apparatus for improving the above situation.
【０００６】[0006]
【発明の構成】本発明の計量器を備えたポンプを使用す
ることにより、血液浄化装置を小型、且つ、簡易な構造
のものとすることができる。即ち、本発明は、容積計量
器の上下部に液面センサーが設けられ、下部液面センサ
ーの端部がローラーポンプの流体流入部に接続され、容
積計量器より上部に設けられた容器からの流路が、下部
液面センサーの端部とローラーポンプの流体流入部との
間の流路に接続されており、容器からの流路中に開閉弁
が設けられていることを特徴とする計量器を備えたポン
プ及び下部液面センサーと容器からの流路が、下部液面
センサーの端部とローラーポンプの流体流入部との間の
流路に接続されている接続点との間の流路に液溜容器が
備えられていることを特徴とする計量器を備えたポンプ
に関する。By using the pump provided with the measuring instrument of the present invention, the blood purification apparatus can be made compact and have a simple structure. That is, according to the present invention, a liquid level sensor is provided in the upper and lower portions of the volume measuring device, the end of the lower liquid level sensor is connected to the fluid inflow portion of the roller pump, and the liquid level sensor is provided from the container provided above the volume measuring device. The flow path is connected to the flow path between the end of the lower liquid level sensor and the fluid inflow part of the roller pump, and an on-off valve is provided in the flow path from the container. The flow path from the pump and the lower liquid level sensor and the vessel to the connection point connected to the flow path between the end of the lower liquid level sensor and the fluid inlet of the roller pump. The present invention relates to a pump provided with a measuring device, characterized in that a liquid reservoir is provided in the passage.
【０００７】本発明の計量器を備えたポンプは、開閉弁
が少なく、配管がシンプルであり、しかも高い精度で流
体を計量することができる。The pump provided with the measuring device of the present invention has few opening / closing valves, simple piping, and can measure the fluid with high accuracy.
【０００８】以下に、本発明の計量器を備えたポンプを
図面に従って更に詳しく説明する。図１は、本発明の計
量器を備えたポンプの概略図である。ローラーポンプ４
は回転するローラーと固定枠との間にシリコンゴム或い
は塩化ビニール等からなるチューブを挟み込み、そのチ
ューブをしごきながら送液するものである。ポンプの駆
動には交流モーター、直流モーター、パルスモーター等
が用いられ、多くの場合減速機が組み合わされる。液面
センサー１及び２としては光透過型或いは超音波型のレ
ベルセンサーが使用される。バルブ７、８が開の時、ロ
ーラーポンプを運転することにより、容器５中の液体は
送液されると共にヘッド差によって容積計量器にも給液
される。The pump equipped with the measuring instrument of the present invention will be described below in more detail with reference to the drawings. FIG. 1 is a schematic view of a pump provided with the measuring instrument of the present invention. Roller pump 4
Is a method in which a tube made of silicon rubber or vinyl chloride is sandwiched between a rotating roller and a fixed frame, and the tube is squeezed to deliver liquid. An AC motor, a DC motor, a pulse motor, or the like is used to drive the pump, and in many cases, a reduction gear is combined. As the liquid level sensors 1 and 2, light transmission type or ultrasonic type level sensors are used. By operating the roller pump when the valves 7 and 8 are open, the liquid in the container 5 is sent and also supplied to the volume meter due to the head difference.
【０００８】液面センサー１が液の到達を感知した時点
で開閉弁８を閉じれば、容積計量器中の流体が送液され
る。液面センサー２が液がなくなったことを感知するま
での時間を計測すれば、容積計量器の容積とこの時間と
から流量が算出される。算出された流量と設定された流
量とに差異があれば、その差異に応じてローラーポンプ
の回転数を増減して調整する。液面センサー２が液が無
くなったことを感知した時点で開閉弁８を開き、再び給
液を開始する。ローラーポンプが停止している時は開閉
弁８を閉にして使用すれば、開閉弁はこれ１個でよい。
又、ポンプ運転中、繰り返し継続して流量を計量するの
ではなく、間欠的に計量するのであれば、開閉弁７を閉
にしておけば、容積計量器から流体がオーバーフローす
ることはない。計量精度を上げるためには、液面センサ
ーは容積計量器そのものではなく、計量器の上下に接続
されたチューブ部分に設置することが好ましい。If the opening / closing valve 8 is closed at the time when the liquid level sensor 1 senses the arrival of the liquid, the fluid in the volume meter is delivered. If the time until the liquid level sensor 2 senses that the liquid is exhausted is measured, the flow rate is calculated from the volume of the volume meter and this time. If there is a difference between the calculated flow rate and the set flow rate, the number of rotations of the roller pump is adjusted according to the difference. When the liquid level sensor 2 detects that the liquid is exhausted, the open / close valve 8 is opened and the liquid supply is started again. If the roller pump is stopped and the on-off valve 8 is closed for use, only one on-off valve is required.
Further, if the flow rate is intermittently measured during pump operation instead of being repeatedly measured, the open / close valve 7 may be closed so that the fluid does not overflow from the volume meter. In order to improve the measuring accuracy, it is preferable that the liquid level sensor is installed not in the volume measuring device itself but in the tube portion connected to the upper and lower sides of the measuring device.
【００１０】次に、液溜容器の作用について説明する。
液面センサー２が液がなくなったことを感知したら開閉
弁８を開にするが、その間の動作時間が長い開閉弁を使
用する場合、容積計量器中の液がなくなり、ローラーポ
ンプが空気を吸い込む恐れがある。そこで、液溜容器を
設けておけば、容積計量器中の液がなくなった後は液溜
容器中の液が送液され、ポンプが空気を吸い込むことが
ない。液溜容器の容積は、開閉弁の動作時間とローラー
ポンプの最大流量とから適宜決めることができる。尚、
液溜容器としては、この部分のチューブを長くすること
により、同様の効果を得ることもできる。Next, the operation of the liquid reservoir will be described.
When the liquid level sensor 2 detects that the liquid is exhausted, the on-off valve 8 is opened, but when an on-off valve having a long operation time is used, the liquid in the volume meter runs out and the roller pump sucks air. There is a fear. Therefore, if a liquid storage container is provided, the liquid in the liquid storage container is sent after the liquid in the volume measuring device is exhausted, and the pump does not suck air. The volume of the liquid reservoir can be appropriately determined based on the operating time of the opening / closing valve and the maximum flow rate of the roller pump. still,
The same effect can be obtained by elongating the tube in this portion as the liquid reservoir.
【００１１】[0011]
【発明の効果】本発明の計量器を備えたポンプは、血液
浄化装置を小型、且つ、簡易構造とするうえで有用であ
る。又、従来のローラーポンプの回転数による流量制御
に比べ、高い精度で流量を計量、制御することができ
る。The pump provided with the measuring device of the present invention is useful for making the blood purification device small in size and simple in structure. Further, the flow rate can be measured and controlled with higher accuracy as compared with the conventional flow rate control by the rotation speed of the roller pump.
【００１１】[0011]
【図１】本発明の計量器を備えたポンプの回路図であ
る。FIG. 1 is a circuit diagram of a pump provided with a weighing device of the present invention.
１ 上液面センサー ２ 上液面センサー ３ 容積計量器 ４ ローラーポンプ ５ 容器 ６ 液溜容器 ７、８ 開閉弁 1 Upper liquid level sensor 2 Upper liquid level sensor 3 Volume meter 4 Roller pump 5 Container 6 Liquid reservoir 7 and 8 Open / close valve
Claims (2)
られ、下部液面センサーの端部がローラーポンプの液体
流入部に接続され、容積計量器より上部に設けられた容
器からの流路が、下部液面センサーの端部とローラーポ
ンプの液体流入部との間の流路に接続されており、容器
からの流路中に開閉弁が設けられていることを特徴とす
る計量器を備えたポンプ。1. A liquid level sensor is provided in the upper and lower portions of a volume measuring device, an end of the lower liquid level sensor is connected to a liquid inflow portion of a roller pump, and a flow from a container provided above the volume measuring device. A meter is characterized in that the passage is connected to a flow passage between the end of the lower liquid level sensor and the liquid inflow portion of the roller pump, and an opening / closing valve is provided in the flow passage from the container. With a pump.
下部液面センサーの端部とローラーポンプの液体流入部
との間の流路に接続されている接続点との間の流路に、
液溜容器が備えられていることを特徴とする請求項１の
計量器を備えたポンプ。2. The lower liquid level sensor and the flow path from the container are
In the flow path between the end of the lower liquid level sensor and the connection point connected to the flow path between the liquid inflow part of the roller pump,
The pump with a measuring instrument according to claim 1, further comprising a liquid reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3361101A JPH05168703A (en) | 1991-12-20 | 1991-12-20 | Pump with meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3361101A JPH05168703A (en) | 1991-12-20 | 1991-12-20 | Pump with meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05168703A true JPH05168703A (en) | 1993-07-02 |
Family
ID=18472205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3361101A Pending JPH05168703A (en) | 1991-12-20 | 1991-12-20 | Pump with meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05168703A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000047252A1 (en) * | 1999-02-10 | 2000-08-17 | Nikkiso Co., Ltd. | Cancer therapeutic agent supply device |
| WO2000047251A1 (en) * | 1999-02-10 | 2000-08-17 | Nikkiso Co., Ltd. | Bloodless treating device |
| US6626857B1 (en) | 1998-11-19 | 2003-09-30 | Tomio Ohta | Extracorporeal circulation device and method for isolation temperature control method |
| JP2012115612A (en) * | 2010-12-03 | 2012-06-21 | Ｊｕｎｋｅｎ Ｍｅｄｉｃａｌ株式会社 | Measuring container with air accumulating bag |
| US9011678B2 (en) | 2006-02-07 | 2015-04-21 | Jms Co., Ltd. | Blood purification apparatus and blood purification circuit |
| JP2017136414A (en) * | 2011-07-29 | 2017-08-10 | フレゼニウス ムディカル カーレ ドイチェランド ゲーエムベーハーＦｒｅｓｅｎｉｕｓ Ｍｅｄｉｃａｌ Ｃａｒｅ Ｄｅｕｔｓｃｈｌａｎｄ ＧｍｂＨ | Method for determining at least one parameter of an extracorporeal blood circuit as well as apparatuses |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6486977A (en) * | 1987-09-30 | 1989-03-31 | Yokogawa Electric Corp | Dialyzer |
-
1991
- 1991-12-20 JP JP3361101A patent/JPH05168703A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6486977A (en) * | 1987-09-30 | 1989-03-31 | Yokogawa Electric Corp | Dialyzer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6626857B1 (en) | 1998-11-19 | 2003-09-30 | Tomio Ohta | Extracorporeal circulation device and method for isolation temperature control method |
| WO2000047252A1 (en) * | 1999-02-10 | 2000-08-17 | Nikkiso Co., Ltd. | Cancer therapeutic agent supply device |
| WO2000047251A1 (en) * | 1999-02-10 | 2000-08-17 | Nikkiso Co., Ltd. | Bloodless treating device |
| US6855122B1 (en) | 1999-02-10 | 2005-02-15 | Tomio Ohta | Bloodless treating device |
| US9011678B2 (en) | 2006-02-07 | 2015-04-21 | Jms Co., Ltd. | Blood purification apparatus and blood purification circuit |
| JP2012115612A (en) * | 2010-12-03 | 2012-06-21 | Ｊｕｎｋｅｎ Ｍｅｄｉｃａｌ株式会社 | Measuring container with air accumulating bag |
| JP2017136414A (en) * | 2011-07-29 | 2017-08-10 | フレゼニウス ムディカル カーレ ドイチェランド ゲーエムベーハーＦｒｅｓｅｎｉｕｓ Ｍｅｄｉｃａｌ Ｃａｒｅ Ｄｅｕｔｓｃｈｌａｎｄ ＧｍｂＨ | Method for determining at least one parameter of an extracorporeal blood circuit as well as apparatuses |
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