JPS6041973A - Controller of ultrafiltration amount - Google Patents

Controller of ultrafiltration amount

Info

Publication number
JPS6041973A
JPS6041973A JP59139546A JP13954684A JPS6041973A JP S6041973 A JPS6041973 A JP S6041973A JP 59139546 A JP59139546 A JP 59139546A JP 13954684 A JP13954684 A JP 13954684A JP S6041973 A JPS6041973 A JP S6041973A
Authority
JP
Japan
Prior art keywords
ultrafiltration
transmembrane pressure
dialysate
line
pressure
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
Application number
JP59139546A
Other languages
Japanese (ja)
Inventor
満隆 上田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nipro Corp
Nissho Corp
Original Assignee
Nipro Corp
Nissho Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nipro Corp, Nissho Corp filed Critical Nipro Corp
Priority to JP59139546A priority Critical patent/JPS6041973A/en
Publication of JPS6041973A publication Critical patent/JPS6041973A/en
Pending legal-status Critical Current

Links

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】 患者の過剰の体液を限外濾過によって除去するときの限
外濾過量を制御する装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for controlling the amount of ultrafiltration when removing excess body fluid from a patient by ultrafiltration.

人工腎臓として要求される機能として血液中の老廃物の
除去ばかりでなく過剰の水分の除去があり、患者を正常
な状態に維持するためには適正最の限外濾過が必要であ
り、限外濾過量の測定はベッドスケールを使用して透析
前後および透析中の患者の体重測定によって行なわれて
いるが、患者の食餌摂取、排便、排尿あるいは発汗等が
あるため、たとえ高精度のスケールを使用しても目的と
する正確な限外濾過量を測定することはできない。
The required functions of an artificial kidney include not only the removal of waste products from the blood, but also the removal of excess water, and in order to maintain the patient in a normal state, optimal ultrafiltration is necessary. The filtration rate is measured by using a bed scale to measure the patient's weight before, during and after dialysis, but because the patient is involved in food intake, defecation, urination, sweating, etc., even if a highly accurate scale is used, However, it is not possible to accurately measure the desired ultrafiltration amount.

そのため限外濾過量測定のための種々の機構が発明考案
されており、その一例として透析器内の白液側と透析液
側との圧力差であるトランスメンブレン圧をコンロール
し、透析器のタイプごとに公表されている限外濾過能を
基準にして所要の限外濾過を行なう試みがあるが、同一
タイプの透析器であっても限外濾過能のバラツキは無視
できるほど小さくはなく、また透析中の限外濾過能の漸
減や患者側々によるバラツキもあるので正確な値は得ら
れず実用化されるには至っていない。
For this reason, various mechanisms have been devised to measure the ultrafiltration rate.One example is to control the transmembrane pressure, which is the pressure difference between the white liquid side and the dialysate side in the dialyzer, and to adjust the type of dialyzer. There have been attempts to perform the required ultrafiltration based on the ultrafiltration capacity published in each country, but the variation in ultrafiltration capacity is not negligible even for dialyzers of the same type, and Due to the gradual decrease in ultrafiltration capacity during dialysis and variations among patients, accurate values cannot be obtained and it has not been put to practical use.

第2の例として透析器を介在せしめた閉鎖回路に透析液
を循環せしめ、透析器の排出側の流路から所要量の限外
濾液をポンプを使用して強制的に除去するサイクルを透
析液を更新して繰返す装置も知られているが、1サイク
ル中は同一の透析液が循環するので血液中の老廃物の除
去効率が低下し、また限外濾過量が前記ポンプの回転数
に応じた電気信号で表示されるため漏洩のない精密なポ
ンプが必要とされるばかりでなく装置全体が複雑な流路
系を必要とするので大型かつ高価な装置となっている。
A second example is a cycle in which dialysate is circulated through a closed circuit with a dialyzer interposed, and a required amount of ultrafiltrate is forcibly removed from the flow path on the discharge side of the dialyzer using a pump. There is also a known device that renews and repeats the dialysing fluid, but since the same dialysate is circulated during one cycle, the efficiency of removing waste products from the blood decreases, and the amount of ultrafiltration depends on the rotation speed of the pump. Since the information is displayed using electrical signals, not only is a leak-free precision pump required, but the entire device also requires a complicated flow path system, making it a large and expensive device.

本発明は前記の欠点を解消し、希望量の限外濾過を行な
うことのできる経時的に積算可能な正確、小型かつ安価
な限外濾過量の制御装置を提供するものである。
The present invention eliminates the above-mentioned drawbacks and provides an accurate, compact, and inexpensive ultrafiltration amount control device that can perform ultrafiltration of a desired amount and can be integrated over time.

すなわち本発明は、トランスメンブレン圧が設定値変更
可能に制御された人工腎臓系において、一時的に透析液
を中断する手段、該中断時の限外濾過液を計量ラインに
導く手段、計量ラインに配置されている液溜め内の限外
濾過液の液面が一定に維持されるように該液溜め内の限
外濾過液を排出するh1量ポンプ手段、該計量ポンプ手
段から前記中断時の限外濾過流量の平均値として出力さ
れる電気信号とトランスメンブレン圧に対応する電気信
号とから限外濾過流量/トランスメンブレン圧をめる手
段、該計算値に基づいてトランスメンブレン圧を設定限
外濾過流量に対応するトランスメンブレン圧に修正する
手段からなることを特徴とする限外濾過量の制御装置に
関する。
That is, the present invention provides a means for temporarily interrupting the dialysate, a means for guiding the ultrafiltrate to the metering line during the interruption, and a means for introducing the ultrafiltrate into the metering line in an artificial kidney system in which the transmembrane pressure is controlled so that the set value can be changed. h1 volume pump means for discharging the ultrafiltrate in the liquid reservoir so that the liquid level of the ultrafiltrate in the liquid reservoir is maintained constant; Means for calculating the ultrafiltration flow rate/transmembrane pressure from an electric signal output as an average value of the ultrafiltration flow rate and an electric signal corresponding to the transmembrane pressure, and setting the transmembrane pressure based on the calculated value. The present invention relates to an ultrafiltration rate control device comprising means for adjusting the transmembrane pressure to correspond to the flow rate.

以下図面に基づいて本発明の詳細な説明する。The present invention will be described in detail below based on the drawings.

第1図および第2図はそれぞれ除圧および陽圧で透析液
が透析器(1)に供給される人工腎臓系の概略図であっ
て、患者の動脈内が血液ポンプ+71によって動脈ライ
ン(2>を経て透析器(1)に供給されて処理された後
静脈ライン(3)を経て患者の静脈に返送される循環が
行なわれ、透析液が供給ライン(4)を経て透析器(1
)に供給されて血液中の老廃物および過剰の水分ととも
に排出ライン(5)から排出され、透析液供給のために
第1図に示された陽圧タイプおよび第2図の陽圧タイプ
のばあいそれぞれ排出ライン(51および供給ライン(
4)に透析液供給ポンプ(8)、(8′)が配置されて
いることは一般の形式どおりである。
1 and 2 are schematic diagrams of an artificial kidney system in which dialysate is supplied to a dialyzer (1) under depressurized and positive pressure, respectively, in which the inside of a patient's artery is connected to an arterial line (2) by a blood pump +71. >, the dialysate is supplied to the dialyzer (1) for treatment, and then returned to the patient's veins via the intravenous line (3).
) and are discharged from the discharge line (5) together with waste products and excess water in the blood, and the positive pressure type shown in Figure 1 and the positive pressure type shown in Figure 2 are used for dialysate supply. A discharge line (51) and a supply line (51) respectively.
4), the dialysate supply pumps (8), (8') are arranged as in the general format.

血液ポンプ(刀と透析器(1)との間の動脈ライン(2
)に配置された血液圧センサー(10)、および陽圧タ
イプのばあいは透析液供給ライン(4)、陽圧タイプの
ばあいは該ライン(4)の透析液供給ポンプ(8′)の
下流側に配置された透析液圧センサ−(11)からの電
気信号がトランスメンブレン圧計算回路(12)に伝え
られ、該計算回路(12)で計算されたトランスメンブ
レン圧と設定値との差を解消させるための電気信号が第
1図の陽圧タイプにあっては透析液供給ポンプ(8)に
伝えられて設定トランスメンブレン圧を維持するために
透析液供給ポンプ(8)の回転が制御され、第2図の陽
圧タイプでは静脈ライン(3)に配置されたクランプ手
段(16)に該信号が伝えられクランプ手段(16)の
開閉によってトランスメンブレン圧が設定値に維持され
る設定値変更可能な機構が装置されており、血液圧を静
脈ライン(3)、透析液圧を排出ライン(5)で測定し
たり、あるいは血液圧を動静脈ラインの平均値、透析液
圧を供給および排出ラインの平均値としてめることもで
きる。
Blood pump (arterial line (2) between sword and dialyzer (1)
), and the dialysate supply line (4) in the case of a positive pressure type, and the dialysate supply pump (8') of the line (4) in the case of a positive pressure type. An electrical signal from the dialysate pressure sensor (11) located downstream is transmitted to the transmembrane pressure calculation circuit (12), and the difference between the transmembrane pressure calculated by the calculation circuit (12) and the set value is In the case of the positive pressure type shown in Fig. 1, an electrical signal to eliminate this is transmitted to the dialysate supply pump (8), and the rotation of the dialysate supply pump (8) is controlled to maintain the set transmembrane pressure. In the positive pressure type shown in Fig. 2, the signal is transmitted to the clamp means (16) disposed on the venous line (3), and the transmembrane pressure is maintained at the set value by opening and closing the clamp means (16). A changeable mechanism is provided to measure blood pressure in the venous line (3) and dialysate pressure in the drain line (5), or to measure blood pressure in the average value of the arteriovenous line and dialysate pressure in the supply and It can also be taken as the average value of the discharge line.

本発明の装置には前記のほか、透析液の供給を一時中断
するための電磁弁なとの流路開閉手段(14)および三
方コック等の流路切換手段(13)がそれぞれ透析液の
供給ライン(4)および排出ライン(5)に設けられて
おり、流路切換手段(13)は流路開閉手段(14)の
閉動作と同時に排出液を計量ライン(6)に導くための
ものであって、図示されていないタイミング回路によっ
てプログラムどおりに透析液の供給が流路切換手段(1
3)の第2図から第1図の状態への作動およびこれに伴
う流路開閉手段(14)の作動によって一時的に中断で
きるようになっている。
In addition to the above, the device of the present invention includes flow path opening/closing means (14) such as a solenoid valve for temporarily interrupting the supply of dialysate, and flow path switching means (13) such as a three-way cock for supplying dialysate. The flow path switching means (13) is provided in the line (4) and the discharge line (5), and is for guiding the discharge liquid to the measuring line (6) at the same time as the flow path opening/closing means (14) closes. A timing circuit (not shown) allows the supply of dialysate to flow path switching means (1) according to the program.
3) can be temporarily interrupted by the operation from the state shown in FIG. 2 to the state shown in FIG. 1 and the accompanying operation of the channel opening/closing means (14).

計量ライン(6)は空気室が大気に解放された点滴筒形
式の液溜め〈15)およびその下流に〇−ラーポンプ形
式等の計量ポンプ(9)を装備しており、液溜め(15
)内の液面が一定に維持されるように計量ポンプ(9)
の運転が制御されるようになっていて、計量ライン(6
)を経由する液体輸送は透析液供給の中断時にのみ行な
われる回路構成となっている。
The metering line (6) is equipped with a drip tube-type liquid reservoir (15) whose air chamber is open to the atmosphere, and a metering pump (9) such as a 〇-ra pump type downstream of the liquid reservoir (15).
) to maintain a constant liquid level in the metering pump (9).
The operation of the weighing line (6
), the circuit configuration is such that liquid transport via the dialysate is carried out only when the dialysate supply is interrupted.

透析液の供給が一時的に中断してもトランスメンブレン
圧は初期設定値どおりに制御されるので、該圧に対応し
た限外濾過が継続して行なわれ、流路切換手段(13)
の上流側の透析液排出ライン(5内の液体は計量ライン
(6)に導かれ液溜め(15)内に流入し計量ポンプ(
9)の運転によ 7− っで排液されるが、液溜め(15)内の液面が一定に維
持されるように計量ポンプ(9)の運転が制御されてい
るので、該ポンプ(9)の輸送量が限外濾過流量と等し
くなる。計量ポンプ(9)としてステッピングモーター
を用いたローラーポンプ等の回転ポンプを使用するとき
、該モーターからの規定時間内のパルス数が、与えられ
たトランスメンブレン圧下での個々の使用透析器に関す
る限外濾過流量の実測値を示すポンプ電気信号として取
り出すことができ、また他の信号手段も採用しうるちの
である。
Even if the supply of dialysate is temporarily interrupted, the transmembrane pressure is controlled to the initial setting value, so ultrafiltration corresponding to the pressure continues, and the flow path switching means (13)
The liquid in the dialysate discharge line (5) on the upstream side of
However, since the operation of the metering pump (9) is controlled so that the liquid level in the liquid reservoir (15) is maintained constant, the pump (9) is drained. 9) The transport amount becomes equal to the ultrafiltration flow rate. When a rotary pump such as a roller pump using a stepping motor is used as the metering pump (9), the number of pulses from the motor within a specified time exceeds the limit for each dialyzer used under a given transmembrane pressure. It can be taken out as a pump electrical signal indicating the actual measured value of the filtration flow rate, and other signal means can also be used.

このように本発明においては中断時に限外濾過流量が瞬
間値ではなく、平均値としてめられる。
In this way, in the present invention, the ultrafiltration flow rate at the time of interruption is determined not as an instantaneous value but as an average value.

第3図に示されるように、該ポンプ信号と、前述の面液
圧および透析液圧信号がトランスメンブレン圧計算回路
(12)に入力されて計算された任意の初期設定値のト
ランスメンブレン圧に対応する電気信号とから個々の使
用透析器の限外濾過能である限外濾過流量/トランスメ
ン8− ブレン圧が計算され、該計算値とあらかじめ設定された
限外濾過流量とが比較されて該設定流量の得られるトラ
ンスメンブレン圧に修正させるための信号がトランスメ
ンブレン圧計算回路(12)に入力されてトランスメン
ブレン圧が修正され、除圧タイプにおいては透析液供給
ポンプ(8)、陽圧タイプにおいてはクランプ手段(1
6)の作動が制御されて修正トランスメンブレン圧にお
ける透析液供給下の限外濾過に移行し、透析液供給の中
断時を含めての限外濾過量の積算が積算回路によって行
なわれる。
As shown in FIG. 3, the pump signal, the above-mentioned surface liquid pressure and dialysate pressure signals are input to the transmembrane pressure calculation circuit (12), and the transmembrane pressure is set to an arbitrary initial setting value. The ultrafiltration flow rate/transmembrane pressure, which is the ultrafiltration capacity of each dialyzer used, is calculated from the corresponding electrical signal, and the calculated value is compared with a preset ultrafiltration flow rate. A signal for correcting the transmembrane pressure obtained by the set flow rate is input to the transmembrane pressure calculation circuit (12), and the transmembrane pressure is corrected. In the type, clamping means (1
The operation of step 6) is controlled to shift to ultrafiltration under dialysate supply at the corrected transmembrane pressure, and the integration circuit performs integration of the amount of ultrafiltration, including when the dialysate supply is interrupted.

限外濾過流量/トランスメンブレン圧の計算時には透析
液の供給が中断されるので白液中の老廃物の除去効率の
低下があるが、1〜2分間で充分であるので艮時簡に及
ぶ透析時開を考虐すると効率低下は無視できる。また使
用透析器の限外濾過能すなわち限外濾過流量/トランス
メンブレン圧の計算は透析開始時に実施して該計算完了
後直ちに設定どおりの限外濾過の行なわれる透析に移行
せしめる必要があるが、該計−〇− 算は透析液供給中断後最初の1〜2秒は液溜め(15)
内の液面の変動があるので、この間を除外して行なうこ
とが好ましい。該計算時のトランスメンブレン圧は任意
に設定してもよいが、高い目の値にしておく方が正確な
計算結果を得ることができる。
When calculating the ultrafiltration flow rate/transmembrane pressure, the supply of dialysate is interrupted, which reduces the efficiency of removing waste products from the white liquor, but 1 to 2 minutes is sufficient, so dialysis can be performed over a short period of time. If you consider the opening times, you can ignore the drop in efficiency. In addition, it is necessary to calculate the ultrafiltration capacity of the dialyzer used, that is, the ultrafiltration flow rate/transmembrane pressure, at the start of dialysis, and immediately after the calculation is completed, the dialysis can proceed to perform ultrafiltration as set. The calculation is based on the fluid reservoir (15) for the first 1 to 2 seconds after the dialysate supply is interrupted.
Since there are fluctuations in the liquid level during this period, it is preferable to exclude this period. Although the transmembrane pressure at the time of calculation may be set arbitrarily, it is possible to obtain more accurate calculation results by setting it to a higher value.

以上の説明で理解できるように、使用透析器の限外濾過
能を透析開始時に計算後、該計算値に基づく設定限外濾
過流量を得るためのトランスメンブレン圧修正が行なわ
れ、修正トランスメンブレン圧下の透析に移行するが、
透析中に透析器の限外濾過能が徐々にほぼ直線的に低下
するので正確な限外濾過量の制御積算を行なうには透析
中に再計算して透析器の限外濾過能の低下に対応したト
ランスメンブレン圧修正をしなければならない。実用的
には約1時間毎に再計算を繰返すと充分であって、その
プログラミングは容易に実施しうるものである。また患
者の容態に応じて透析中に限外濾過流量の再設定を行な
っても目的とする正確な限外濾過の制御−18− が可能である。再計算時のトランスメンブレン圧は修正
中を小さくするために再計算前の修正トランスメンブレ
ン圧とするプログラミングが好ましい。
As can be understood from the above explanation, after the ultrafiltration capacity of the dialyzer used is calculated at the start of dialysis, the transmembrane pressure is corrected to obtain the set ultrafiltration flow rate based on the calculated value, and the corrected transmembrane pressure is dialysis, but
During dialysis, the ultrafiltration capacity of the dialyzer gradually decreases almost linearly, so in order to accurately control and integrate the ultrafiltration rate, it is necessary to recalculate during dialysis to account for the decrease in the ultrafiltration capacity of the dialyzer. Corresponding transmembrane pressure modifications must be made. Practically speaking, it is sufficient to repeat the recalculation approximately every hour, and the programming thereof can be easily implemented. Further, even if the ultrafiltration flow rate is reset during dialysis depending on the patient's condition, the desired and accurate ultrafiltration control can be achieved. The transmembrane pressure at the time of recalculation is preferably programmed to be the corrected transmembrane pressure before recalculation in order to reduce the amount during correction.

前記のごとく、本発明によれば設定どおりの正確な限外
濾過の制御が可能であり、レコーダーに接続して限外濾
過層の経時的記録を行なうこともでき、またとくに複雑
かつ大型の機構を必要としないので小型かつ安価な装置
を提供しうるちのである。
As described above, according to the present invention, it is possible to control ultrafiltration accurately according to the settings, and it is also possible to record the ultrafiltration layer over time by connecting it to a recorder. This makes it possible to provide a small and inexpensive device.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の一実施例を示すものであって、第1図お
よび第2図はそれぞれ除圧タイプおよび陽圧タイプの透
析液供給の行なわれる人工腎臓系の概略図、第3図は設
定限外濾過流暴を得るためのトランスメンブレン圧修正
プロセスを示すブロック図である。 (図面の主要符号) (1):透析器 (2):動脈ライン (3):静脈ライン (4):透析液供給ライン (5):透析液排出ライン (6)二計量ライン (71:血液ポンプ (8)、(8′):透析液供給ポンプ (9):計量ポンプ (10):血液圧センサ− (11) :透析液圧センサ− (12) : トランスメンブレン 圧計篩回路 (13) :流路切換手段 (14) :流路開閉手段 (15’):液溜め (16) :クランプ手段 特許出願人 株式会社 ニッショー 第1図
The drawings show one embodiment of the present invention, and FIGS. 1 and 2 are schematic diagrams of an artificial kidney system in which depressurized type and positive pressure type dialysate are supplied, respectively, and FIG. 3 is a diagram showing the settings. FIG. 2 is a block diagram illustrating a transmembrane pressure modification process to obtain ultrafiltration flow. (Main symbols in the drawing) (1): Dialyzer (2): Arterial line (3): Venous line (4): Dialysate supply line (5): Dialysate discharge line (6) Two metering lines (71: Blood Pumps (8), (8'): Dialysate supply pump (9): Metering pump (10): Blood pressure sensor (11): Dialysis fluid pressure sensor (12): Transmembrane pressure gauge sieve circuit (13): Channel switching means (14): Channel opening/closing means (15'): Liquid reservoir (16): Clamping means Patent applicant Nissho Co., Ltd. Figure 1

Claims (1)

【特許請求の範囲】[Claims] 1 トランスメンブレン圧が設定伯変更可能に制御され
た人工腎臓系において、一時的に透析液を中断する手段
、該中断時の限外濾過液を計量ラインに導く手段、計量
ラインに配置されている液溜め内の限外濾過液の液面が
一定に維持されるように該液溜め内の限外濾過液を排出
する計量ポンプ手段、該計量ポンプ手段から前記中断時
の限外濾過流最の平均値として出力される電気信号とト
ランスメンブレン圧に対応する電気信号とから限外濾過
流量/トランスメンブレン圧をめる手段、該計算値に基
づいてトランスメンブレン圧を設定限外濾過流量に対応
するトランスメンブレン圧に修正する手段からなること
を特徴とする限外濾過量の制御装置。
1. In an artificial kidney system in which the transmembrane pressure is controlled so that the setting ratio can be changed, a means for temporarily interrupting the dialysate, a means for guiding the ultrafiltrate to the metering line at the time of the interruption, and a means disposed in the metering line. A metering pump means for discharging the ultrafiltrate in the liquid reservoir so that the liquid level of the ultrafiltrate in the liquid reservoir is maintained constant; Means for calculating the ultrafiltration flow rate/transmembrane pressure from an electric signal output as an average value and an electric signal corresponding to the transmembrane pressure, and setting the transmembrane pressure based on the calculated value corresponding to the ultrafiltration flow rate. 1. An ultrafiltration rate control device comprising means for adjusting transmembrane pressure.
JP59139546A 1984-07-05 1984-07-05 Controller of ultrafiltration amount Pending JPS6041973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59139546A JPS6041973A (en) 1984-07-05 1984-07-05 Controller of ultrafiltration amount

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59139546A JPS6041973A (en) 1984-07-05 1984-07-05 Controller of ultrafiltration amount

Publications (1)

Publication Number Publication Date
JPS6041973A true JPS6041973A (en) 1985-03-05

Family

ID=15247781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59139546A Pending JPS6041973A (en) 1984-07-05 1984-07-05 Controller of ultrafiltration amount

Country Status (1)

Country Link
JP (1) JPS6041973A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004512873A (en) * 2000-10-30 2004-04-30 ネフロス・インコーポレーテッド Two-stage diafiltration method and apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5348977A (en) * 1976-10-14 1978-05-02 Gambro Ag Apparatus for measuring ultraafiltration in dialysis apparatus
JPS5848185A (en) * 1981-09-17 1983-03-22 Masakazu Seo Counter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5348977A (en) * 1976-10-14 1978-05-02 Gambro Ag Apparatus for measuring ultraafiltration in dialysis apparatus
JPS5848185A (en) * 1981-09-17 1983-03-22 Masakazu Seo Counter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004512873A (en) * 2000-10-30 2004-04-30 ネフロス・インコーポレーテッド Two-stage diafiltration method and apparatus

Similar Documents

Publication Publication Date Title
CA2495561C (en) Blood purifying device and method of operating the same
JP2532261B2 (en) Equipment for hemodialysis treatment
JP5587891B2 (en) Device for blood treatment outside the body and method for managing said device
US4889635A (en) Method and apparatus for controlling the quantities of liquid circulating in the dialysis liquid circuit of an artificial kidney
ES2260389T5 (en) Procedure to determine the aging of a liquid filter
US5366630A (en) Artificial kidney and a method of controlling it
JP4059926B2 (en) Blood treatment system to prevent symptoms during dialysis
US4747950A (en) Method and apparatus for controlled ultrafiltration during hemodialysis
US3990973A (en) Apparatus for measuring ultrafiltration rate
JP2005503903A (en) Method for controlling a dialysis machine
JPH07506A (en) Equipment and method for controlling balance of fluid in external blood circuit
JP2516928B2 (en) Dialysis machine
JP2011526175A (en) Peritoneal dialysis machine
JPS6041973A (en) Controller of ultrafiltration amount
JP2769514B2 (en) Water removal control device for hemodialysis machine
JP3186518B2 (en) Continuous blood purification device
JPS649027B2 (en)
JPH0519071Y2 (en)
JPH0519072Y2 (en)
JPH04221573A (en) Dialyzer and dialysis device
JPH0627166Y2 (en) Dialysis machine
JPH06134031A (en) Blood dialyzing and filtering device
JPS63240871A (en) Artificial kidney dialytic apparatus
WO2022253528A1 (en) An apparatus for extracorporeal blood treatment
JPH069670Y2 (en) Water removal controller for hemodialysis machine