JP2011120823A - Blood purifier - Google Patents

Blood purifier Download PDF

Info

Publication number
JP2011120823A
JP2011120823A JP2009282879A JP2009282879A JP2011120823A JP 2011120823 A JP2011120823 A JP 2011120823A JP 2009282879 A JP2009282879 A JP 2009282879A JP 2009282879 A JP2009282879 A JP 2009282879A JP 2011120823 A JP2011120823 A JP 2011120823A
Authority
JP
Japan
Prior art keywords
light
blood
concentration
detecting
blood purification
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.)
Granted
Application number
JP2009282879A
Other languages
Japanese (ja)
Other versions
JP5491844B2 (en
Inventor
Kunihiko Akita
邦彦 秋田
Tomoya Murakami
智也 村上
Takayuki Hirano
貴敬 平野
Yasushi Takakuwa
保志 高▲桑▼
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.)
Nikkiso Co Ltd
Original Assignee
Nikkiso Co Ltd
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 Nikkiso Co Ltd filed Critical Nikkiso Co Ltd
Priority to JP2009282879A priority Critical patent/JP5491844B2/en
Publication of JP2011120823A publication Critical patent/JP2011120823A/en
Application granted granted Critical
Publication of JP5491844B2 publication Critical patent/JP5491844B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • External Artificial Organs (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blood purifier improving accuracy of concentration detection of liquid by a concentration detecting means even though the concentration change of the liquid is substantial, and improving reliability of the concentration detecting means. <P>SOLUTION: In the blood purifier having a dialyzer 2 for purifying the blood of a patient while circulating the same outside a body, and a discharged liquid concentration sensor 5 for detecting the concentration of the liquid flowing associated with the blood purification, the discharged liquid concentration sensor 5 has a light emitting means 11 irradiating light to discharged liquid; a light receiving means 12 for receiving the transmitting light having transmitted through the discharged liquid from the light emitting means 11; a detecting means 13 detecting the received light intensity by the light receiving means 12; and a light emission control means 14 detectable of the concentration of the liquid based on the received light intensity detected by the detecting means 13 and emitting light of a plurality of different light emitting intensity by the light emitting means 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、患者の血液を体外循環させつつ浄化する血液浄化器と、血液浄化に伴って流れる液体の濃度を検出する濃度検出手段とを具備した血液浄化装置に関するものである。   The present invention relates to a blood purification apparatus comprising a blood purifier for purifying a patient's blood while circulating it outside the body, and a concentration detecting means for detecting the concentration of a liquid flowing along with the blood purification.

患者の血液を体外循環させつつ浄化する血液処理として血液透析治療がある。かかる血液透析治療においては、透析液を流通させ得る血液浄化器としてのダイアライザを具備するとともに、患者の血液を体外循環させる血液回路を当該ダイアライザに接続させ、ダイアライザの半透膜を介して血液と透析液とを接触させ、血液中の老廃物或いは余剰水分を除去(余剰水分の除去は「除水」と称される)し得るようになっている。ダイアライザにて浄化された血液は、穿刺針を介して患者の体内に戻される一方、老廃物や余剰水分は、透析液と共に透析液排出ラインを介して外部に排出されるよう構成されている。   There is hemodialysis treatment as a blood treatment for purifying a patient's blood while circulating it extracorporeally. In such hemodialysis treatment, a dialyzer as a blood purifier capable of circulating dialysate is provided, and a blood circuit that circulates the patient's blood extracorporeally is connected to the dialyzer. The dialysate is brought into contact with each other to remove waste or excess water in the blood (removal of excess water is called “water removal”). The blood purified by the dialyzer is returned to the patient's body through the puncture needle, while waste and excess water are discharged together with the dialysate through the dialysate discharge line.

ところで、血液中から除去される老廃物には、尿素、尿酸及びクレアチニン等が含まれており、特に血液中の尿素の濃度変化が透析効率を示す指標として有効であることが分かっており、透析効率を適正とすべく尿素濃度の変化を監視することが提案されている。この尿素濃度の変化は、通常、定期的に実施される血液検査により監視することができるが、その場合、透析治療中においてリアルタイムに尿素濃度の変化を監視することができない。   By the way, waste products removed from the blood contain urea, uric acid, creatinine, and the like, and it has been found that the concentration change of urea in the blood is particularly effective as an indicator of dialysis efficiency. It has been proposed to monitor changes in urea concentration to ensure efficiency. This change in urea concentration can usually be monitored by a blood test performed regularly, but in that case, the change in urea concentration cannot be monitored in real time during dialysis treatment.

そこで、従来、透析液排出ラインに排液濃度センサを具備させ、尿素濃度の変化(「Kt/V」なる指標)をリアルタイムに検出し得るものが提案されるに至っている(例えば、特許文献1参照)。かかる従来の排液濃度センサは、ダイアライザからの排液に対して光を照射し得るLED(発光手段)と、排液を透過したLEDからの透過光を受け得る受光素子(受光手段)と、受光素子による受光強度を検出し得る検出手段とを具備し、検出手段により検出された受光強度に基づき排液の濃度を検出し得るよう構成されていた。   In view of this, conventionally, it has been proposed to provide a dialysate discharge line with a drainage concentration sensor to detect a change in urea concentration (an index “Kt / V”) in real time (for example, Patent Document 1). reference). Such a conventional drainage concentration sensor includes an LED (light emitting means) capable of irradiating light with respect to the drainage from the dialyzer, a light receiving element (light receiving means) capable of receiving transmitted light from the LED that has passed through the drainage, And detecting means capable of detecting the light receiving intensity by the light receiving element, and configured to detect the concentration of the drainage based on the light receiving intensity detected by the detecting means.

特表2002−516722号公報JP-T-2002-516722

しかしながら、上記従来の血液浄化装置においては、排液濃度センサで濃度検出する対象の排液の濃度が著しく変化することから、排液の濃度によってはその濃度を精度よく検出することが難しいという問題がある。
例えば、血液回路における血液流量を大きくしつつ透析液の流量を小さく設定した場合、排液の濃度は高くなる一方、血液回路における血液流量を小さくしつつ透析液の流量を大きく設定した場合、排液の濃度は低くなるので、濃度変化の幅が比較的大きくなってしまう。然るに、従来の如く発光手段を単一の発光強度で発光させた場合、高濃度の排液を検出する際の受光手段側の感度が著しく低下してしまうので、濃度の検出精度が低下してしまうのである。
However, in the conventional blood purification apparatus, the concentration of the drainage to be detected by the drainage concentration sensor changes remarkably, so that it is difficult to accurately detect the concentration depending on the concentration of the drainage. There is.
For example, if the dialysate flow rate is set low while increasing the blood flow rate in the blood circuit, the concentration of the drainage fluid increases, while if the dialysate flow rate is set high while reducing the blood flow rate in the blood circuit, the drainage concentration increases. Since the concentration of the liquid is low, the range of concentration change is relatively large. However, when the light emitting means emits light with a single light emission intensity as in the prior art, the sensitivity on the light receiving means side when detecting a high concentration drainage is remarkably lowered, so the density detection accuracy is lowered. It ends up.

本発明は、このような事情に鑑みてなされたもので、液体の濃度変化が比較的著しくても濃度検出手段による液体の濃度検出の精度向上を図ることができ、当該濃度検出手段の信頼性を向上させ得る血液浄化装置を提供することにある。   The present invention has been made in view of such circumstances, and can improve the accuracy of liquid concentration detection by the concentration detection means even if the change in the concentration of the liquid is relatively significant, and the reliability of the concentration detection means can be improved. An object of the present invention is to provide a blood purification device that can improve the blood pressure.

請求項1記載の発明は、患者の血液を体外循環させつつ浄化する血液浄化器と、血液浄化に伴って流れる液体の濃度を検出する濃度検出手段とを具備した血液浄化装置において、前記濃度検出手段は、前記液体に対して光を照射し得る発光手段と、前記液体を透過した前記発光手段からの透過光を受け得る受光手段と、前記受光手段による受光強度を検出し得る検出手段とを具備し、前記検出手段により検出された受光強度に基づき液体の濃度を検出し得るとともに、前記発光手段により異なる複数の発光強度の光を照射し得ることを特徴とする。   The invention according to claim 1 is a blood purification apparatus comprising: a blood purifier that purifies a patient's blood while circulating it extracorporeally; and a concentration detection means that detects a concentration of a liquid that flows along with the blood purification. The means comprises: a light emitting means capable of irradiating the liquid with light; a light receiving means capable of receiving the transmitted light from the light emitting means that has passed through the liquid; and a detection means capable of detecting a light reception intensity by the light receiving means. And the concentration of the liquid can be detected based on the received light intensity detected by the detecting means, and the light emitting means can irradiate light having a plurality of different light emission intensities.

請求項2記載の発明は、請求項1記載の血液浄化装置において、前記濃度検出手段は、前記発光手段に対して供給する電流を異ならせることにより異なる複数の発光強度の光を照射させる発光制御手段を具備したことを特徴とする。   According to a second aspect of the present invention, in the blood purification apparatus according to the first aspect of the present invention, the concentration detection unit emits light having a plurality of different emission intensities by varying the current supplied to the light emitting unit. Means are provided.

請求項3記載の発明は、請求項2記載の血液浄化装置において、前記発光制御手段は、前記発光手段により異なる発光強度の光を交互に順次繰り返し発光させることを特徴とする。   According to a third aspect of the present invention, in the blood purification apparatus according to the second aspect, the light emission control means causes the light emission means to sequentially and repeatedly emit light having different light emission intensities.

請求項4記載の発明は、請求項1〜3の何れか1つに記載の血液浄化装置において、前記発光手段により異なる2つの発光強度の光を照射し得ることを特徴とする。   According to a fourth aspect of the present invention, in the blood purification apparatus according to any one of the first to third aspects, the light emitting means can irradiate light having two different emission intensities.

請求項5記載の発明は、請求項1〜4の何れか1つに記載の血液浄化装置において、前記発光手段はLEDから成るとともに前記受光手段は受光強度に応じた電圧を生じさせ得る受光素子から成ることを特徴とする。   According to a fifth aspect of the present invention, in the blood purification apparatus according to any one of the first to fourth aspects, the light emitting means comprises an LED, and the light receiving means can generate a voltage corresponding to the received light intensity. It is characterized by comprising.

請求項6記載の発明は、請求項1〜5の何れか1つに記載の血液浄化装置において、前記濃度検出手段は、前記血液浄化器から排出された排液の濃度を検出して血液浄化効率を監視し得る排液濃度センサから成ることを特徴とする。   According to a sixth aspect of the present invention, in the blood purification apparatus according to any one of the first to fifth aspects, the concentration detecting means detects the concentration of the drainage discharged from the blood purifier, thereby purifying the blood. It is characterized by comprising a drainage concentration sensor capable of monitoring the efficiency.

請求項7記載の発明は、請求項1〜5の何れか1つに記載の血液浄化装置において、前記濃度検出手段は、血液浄化器から排出された排液の濃度から漏血を検出し得る漏血検出器から成ることを特徴とする。   A seventh aspect of the present invention is the blood purification apparatus according to any one of the first to fifth aspects, wherein the concentration detecting means can detect blood leakage from the concentration of drainage discharged from the blood purifier. It consists of a blood leak detector.

請求項8記載の発明は、請求項1〜5の何れか1つに記載の血液浄化装置において、前記濃度検出手段は、患者の血液を体外循環させるための血液回路に配設され、当該血液回路を流れる血液の濃度を検出し得る血液濃度センサから成ることを特徴とする。   According to an eighth aspect of the present invention, in the blood purification apparatus according to any one of the first to fifth aspects, the concentration detecting means is disposed in a blood circuit for circulating the patient's blood extracorporeally. It is characterized by comprising a blood concentration sensor capable of detecting the concentration of blood flowing through the circuit.

請求項1の発明によれば、検出手段により検出された受光強度に基づき液体の濃度を検出し得るとともに、発光手段により異なる複数の発光強度の光を照射し得るので、液体の濃度変化が比較的著しくても濃度検出手段による液体の濃度検出の精度向上を図ることができ、当該濃度検出手段の信頼性を向上させることができる。   According to the first aspect of the present invention, the liquid concentration can be detected based on the received light intensity detected by the detecting means, and the light emitting means can irradiate light having a plurality of different light emission intensities. Even if it is remarkable, it is possible to improve the accuracy of liquid concentration detection by the concentration detection means, and to improve the reliability of the concentration detection means.

請求項2の発明によれば、濃度検出手段は、発光手段に対して供給する電流を異ならせることにより異なる複数の発光強度の光を照射させる発光制御手段を具備したので、発光強度毎の複数の発光手段を不要として、装置の製造コストを低減させることができるとともに当該濃度検出手段の構成を簡素化させることができる。   According to the second aspect of the present invention, since the concentration detection means includes the light emission control means for irradiating light having a plurality of different light emission intensities by varying the current supplied to the light emission means, a plurality of light emission intensity for each light emission intensity. Thus, the manufacturing cost of the apparatus can be reduced, and the configuration of the concentration detecting means can be simplified.

請求項3の発明によれば、発光制御手段は、発光手段により異なる発光強度の光を交互に順次繰り返し発光させるので、当該発光強度の異なる光を液体に対して満遍なく照射させることができ、液体の濃度変化が頻繁になされても当該濃度変化に良好に追随させて濃度検出手段による濃度検出を行わせることができる。   According to the invention of claim 3, since the light emission control means causes the light emission means to repeatedly and alternately emit light having different light emission intensities, the light having different light emission intensities can be uniformly applied to the liquid, and the liquid Even if the density change is frequently performed, the density detection by the density detection means can be performed by following the density change well.

請求項4の発明によれば、発光手段により異なる2つの発光強度の光を照射し得るので、単に強弱2つの発光を行わせることにより、液体の濃度変化が著しくても濃度検出手段による液体の濃度検出の精度向上を図ることができ、当該濃度検出手段の信頼性を向上させることができる。   According to the invention of claim 4, since the light emitting means can irradiate light having two different light emission intensities, the light of the liquid by the concentration detecting means can be obtained even if the concentration change of the liquid is remarkably merely by causing the light intensity to be emitted. The accuracy of density detection can be improved, and the reliability of the density detection means can be improved.

請求項5の発明によれば、発光手段はLEDから成るとともに受光手段は受光強度に応じた電圧を生じさせ得る受光素子から成るので、LEDの技術的優位性を有した濃度検出手段とすることができる。   According to the invention of claim 5, since the light emitting means is composed of an LED and the light receiving means is composed of a light receiving element capable of generating a voltage corresponding to the received light intensity, the density detecting means having the technical advantage of the LED is obtained. Can do.

請求項6の発明によれば、濃度検出手段は、血液浄化器から排出された排液の濃度を検出して血液浄化効率を監視し得る排液濃度センサから成るので、血液浄化に伴う排液の濃度検出における精度向上を図ることができるとともに、血液浄化効率をリアルタイム且つ高精度に監視することができる。   According to the sixth aspect of the present invention, since the concentration detection means comprises the drainage concentration sensor that can monitor the blood purification efficiency by detecting the concentration of the drainage discharged from the blood purifier, the drainage accompanying the blood purification. As a result, the blood purification efficiency can be monitored in real time and with high accuracy.

請求項7の発明によれば、濃度検出手段は、血液浄化器から排出された排液の濃度から漏血を検出し得る漏血検出器から成るので、血液浄化に伴う排液の漏血検出における精度向上を図ることができる。   According to the seventh aspect of the present invention, the concentration detection means comprises the blood leakage detector capable of detecting blood leakage from the concentration of the drainage discharged from the blood purifier, and therefore, the leakage detection of the drainage accompanying blood purification. The accuracy can be improved.

請求項8の発明によれば、濃度検出手段は、患者の血液を体外循環させるための血液回路に配設され、当該血液回路を流れる血液の濃度を検出し得る血液濃度センサから成るので、血液浄化に伴う血液濃度検出における精度向上を図ることができる。   According to the invention of claim 8, since the concentration detection means comprises a blood concentration sensor which is disposed in a blood circuit for circulating the patient's blood extracorporeally and can detect the concentration of blood flowing through the blood circuit, blood The accuracy in blood concentration detection accompanying purification can be improved.

本発明の実施形態に係る血液浄化装置を示す模式図The schematic diagram which shows the blood purification apparatus which concerns on embodiment of this invention. 同血液浄化装置における濃度検出手段を示す模式図Schematic diagram showing concentration detection means in the blood purification apparatus 同濃度検出手段を示すブロック図Block diagram showing the same concentration detection means 同濃度検出手段における液体濃度が変化した場合の受光手段で生じた受光電圧の推移を示すグラフGraph showing the transition of the received light voltage generated by the light receiving means when the liquid concentration in the same concentration detecting means changes 同濃度検出手段における発光制御手段による制御を示すタイムチャートTime chart showing control by light emission control means in the same concentration detection means

以下、本発明の実施形態について図面を参照しながら具体的に説明する。
本実施形態に係る血液浄化装置は、患者の血液を体外循環させつつ浄化するためのもので、血液透析治療で使用される血液透析装置に適用されたものである。かかる血液透析装置は、図1に示すように、血液浄化器としてのダイアライザ2と、該ダイアライザ2に接続された血液回路1と、濃度検出手段としての排液濃度センサ5と、ダイアライザ2に透析液を供給しつつ除水する透析装置本体6とから主に構成されている。
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The blood purification apparatus according to the present embodiment is for purifying a patient's blood while circulating it extracorporeally, and is applied to a hemodialysis apparatus used in hemodialysis treatment. As shown in FIG. 1, this hemodialysis apparatus is dialyzed against a dialyzer 2 as a blood purifier, a blood circuit 1 connected to the dialyzer 2, a drainage concentration sensor 5 as a concentration detecting means, and a dialyzer 2. It is mainly composed of a dialyzer body 6 that removes water while supplying a liquid.

血液回路1は、同図に示すように、可撓性チューブから成る動脈側血液回路1a及び静脈側血液回路1bから主に構成されており、これら動脈側血液回路1aと静脈側血液回路1bの間にダイアライザ2が接続されている。動脈側血液回路1aには、その先端に動脈側穿刺針aが接続されているとともに、途中にしごき型の血液ポンプ3、除泡用のドリップチャンバ4aが配設されている。一方、静脈側血液回路1bには、その先端に静脈側穿刺針bが接続されているとともに、途中に除泡用のドリップチャンバ4bが接続されている。   As shown in the figure, the blood circuit 1 is mainly composed of an arterial blood circuit 1a and a venous blood circuit 1b made of a flexible tube. The arterial blood circuit 1a and the venous blood circuit 1b A dialyzer 2 is connected between them. An arterial puncture needle a is connected to the tip of the arterial blood circuit 1a, and an iron-type blood pump 3 and a drip chamber 4a for defoaming are disposed on the way. On the other hand, a venous puncture needle b is connected to the distal end of the venous blood circuit 1b, and a drip chamber 4b for defoaming is connected midway.

そして、動脈側穿刺針a及び静脈側穿刺針bを患者に穿刺した状態で、血液ポンプ3を駆動させると、患者の血液は、ドリップチャンバ4aで除泡がなされつつ動脈側血液回路1aを通ってダイアライザ2に至り、該ダイアライザ2によって血液浄化及び除水が施され、ドリップチャンバ4bで除泡がなされつつ静脈側血液回路1bを通って患者の体内に戻る。即ち、患者の血液を血液回路1にて体外循環させつつダイアライザ2にて浄化するのである。   When the blood pump 3 is driven with the patient punctured with the artery side puncture needle a and the vein side puncture needle b, the patient's blood passes through the artery side blood circuit 1a while being defoamed in the drip chamber 4a. To the dialyzer 2, blood purification and water removal are performed by the dialyzer 2, and defoaming is performed in the drip chamber 4 b, and then returns to the patient's body through the venous blood circuit 1 b. That is, the blood of the patient is purified by the dialyzer 2 while circulating outside the body by the blood circuit 1.

ダイアライザ2は、その筐体部に、血液導入ポート2a、血液導出ポート2b、透析液導入ポート2c及び透析液導出ポート2dが形成されており、このうち血液導入ポート2aには動脈側血液回路1aの基端が、血液導出ポート2bには静脈側血液回路1bの基端がそれぞれ接続されている。また、透析液導入ポート2c及び透析液導出ポート2dは、透析装置本体6から延設された透析液導入ライン7及び透析液排出ライン8とそれぞれ接続されている。   The dialyzer 2 is formed with a blood introduction port 2a, a blood outlet port 2b, a dialysate inlet port 2c, and a dialysate outlet port 2d in the casing. Among these, the blood inlet port 2a has an arterial blood circuit 1a. The base end of the venous blood circuit 1b is connected to the blood outlet port 2b. The dialysate introduction port 2c and the dialysate lead-out port 2d are connected to a dialysate introduction line 7 and a dialysate discharge line 8 extending from the dialyzer body 6, respectively.

ダイアライザ2内には、複数の中空糸が収容されており、該中空糸内部が血液の流路とされるとともに、中空糸外周面と筐体部の内周面との間が透析液の流路とされている。中空糸には、その外周面と内周面とを貫通した微少な孔(ポア)が多数形成されて中空糸膜を形成しており、該膜を介して血液中の老廃物や余剰水分等が透析液内に透過し得るよう構成されている。   A plurality of hollow fibers are accommodated in the dialyzer 2, the inside of the hollow fibers is used as a blood flow path, and the flow of dialysate is between the hollow fiber outer peripheral surface and the inner peripheral surface of the housing. It is considered a road. A hollow fiber membrane is formed in the hollow fiber by forming a large number of minute holes (pores) penetrating the outer peripheral surface and the inner peripheral surface, and waste products in the blood, excess water, etc. are formed through the membrane. Is configured to be able to permeate into the dialysate.

一方、透析装置本体6は、複式ポンプPと、透析液排出ライン8において複式ポンプPを迂回して接続されたバイパスライン9と、該バイパスライン9に接続された除水ポンプ10とから主に構成されている。複式ポンプPは、透析液導入ライン7及び透析液排出ライン8に跨って配設され、当該透析液導入ライン7からダイアライザ2に対して透析液を導入させるとともに、当該ダイアライザ2に導入された透析液を血液中の老廃物と共に透析液排出ライン8から排出させるためのものである。   On the other hand, the dialysis machine main body 6 mainly includes a duplex pump P, a bypass line 9 that bypasses the duplex pump P in the dialysate discharge line 8, and a dewatering pump 10 that is connected to the bypass line 9. It is configured. The dual pump P is disposed across the dialysate introduction line 7 and the dialysate discharge line 8 to introduce the dialysate from the dialysate introduction line 7 to the dialyzer 2 and the dialysis introduced into the dialyzer 2. The liquid is discharged from the dialysate discharge line 8 together with waste products in the blood.

そして、透析液導入ライン7の一端がダイアライザ2(透析液導入ポート2c)に接続されるとともに、他端が所定濃度の透析液を調製する透析液供給装置(不図示)に接続されている。また、透析液排出ライン8の一端は、ダイアライザ2(透析液導出ポート2d)に接続されるとともに、他端が排液手段(不図示)と接続されており、透析液供給装置から供給された透析液が透析液導入ライン7を通ってダイアライザ2に至った後、透析液排出ライン8及びバイパスライン9を通って排液手段に送られるようになっている。   One end of the dialysate introduction line 7 is connected to the dialyzer 2 (dialyte introduction port 2c), and the other end is connected to a dialysate supply device (not shown) for preparing a dialysate having a predetermined concentration. Further, one end of the dialysate discharge line 8 is connected to the dialyzer 2 (dialysate outlet port 2d), and the other end is connected to a drainage means (not shown), and supplied from the dialysate supply device. After the dialysate reaches the dialyzer 2 through the dialysate introduction line 7, it is sent to the drainage means through the dialysate discharge line 8 and the bypass line 9.

除水ポンプ10は、ダイアライザ2中を流れる患者の血液から水分(余剰水分)を除去するためのものである。即ち、かかる除水ポンプ10を駆動させると、透析液導入ライン7から導入される透析液量よりも透析液排出ライン8から排出される液体の容量が多くなり、その多い容量分だけ血液中から水分が除去されるのである。尚、かかる除水ポンプ10以外の手段(例えば所謂バランシングチャンバ等を利用するもの)にて患者の血液から水分を除去するようにしてもよい。   The water removal pump 10 is for removing water (surplus water) from the blood of the patient flowing through the dialyzer 2. That is, when the dewatering pump 10 is driven, the volume of the liquid discharged from the dialysate discharge line 8 is larger than the amount of the dialysate introduced from the dialysate introduction line 7, and the amount of the larger volume is removed from the blood. Moisture is removed. In addition, you may make it remove a water | moisture content from a patient's blood by means other than this water removal pump 10 (for example, what utilizes what is called a balancing chamber etc.).

排液濃度センサ5(濃度検出手段)は、透析装置本体6内における透析液排出ライン8に配設され、血液浄化に伴って流れる液体(本実施形態においては、血液浄化器としてのダイアライザ2から排出された排液)の濃度を検出して血液浄化効率を監視し得るものであり、図3に示すように、発光手段11と、受光手段12と、検出手段13と、発光制御手段14とから主に構成されている。   The drainage concentration sensor 5 (concentration detection means) is disposed in the dialysate discharge line 8 in the dialyzer main body 6 and flows along with blood purification (in this embodiment, from the dialyzer 2 as a blood purification device). The blood purification efficiency can be monitored by detecting the concentration of the discharged fluid). As shown in FIG. 3, the light emitting means 11, the light receiving means 12, the detecting means 13, the light emission controlling means 14, Consists mainly of.

発光手段11は、液体(本実施形態においてはダイアライザ2から排出された排液)に対して光を照射し得るLEDから成る光源であり、図2に示すように、透析液排出ライン8を挟んで受光手段12と対向して配設されている。受光手段12は、液体(ダイアライザ2から排出された排液)を透過した発光手段11からの透過光を受け得るものであり、本実施形態においては、受光強度に応じた電圧を生じさせ得る受光素子から成る。   The light emitting means 11 is a light source composed of an LED capable of irradiating light to a liquid (drainage discharged from the dialyzer 2 in this embodiment), and sandwiches the dialysate discharge line 8 as shown in FIG. Is disposed opposite to the light receiving means 12. The light receiving means 12 can receive the transmitted light from the light emitting means 11 that has passed through the liquid (drainage discharged from the dialyzer 2). In the present embodiment, the light receiving means 12 can generate a voltage corresponding to the received light intensity. It consists of elements.

これにより、透析液排出ライン8に透析液が流れた状態において発光手段11から光を照射させれば、その照射された光が透析液排出ライン8にて流れる排液を透過することとなるので、排液の濃度に応じて光の吸収が図られた後、受光手段12にて受光することとなる。而して、受光手段12による受光強度(即ち、受光強度に応じて生じた電圧)を検出すれば、排液の濃度の変化を検出することができるのである。検出手段13は、受光手段12と電気的に接続されて当該受光手段12による受光強度を検出し得るもので、本実施形態においては受光手段12による受光強度に応じて生じた電圧を検出し得るものである。従って、検出手段13により検出された受光強度(受光手段12による受光強度に応じて生じた電圧)に基づき透析液排出ライン8を流れる排液の濃度を検出することができる。   Thereby, if light is emitted from the light emitting means 11 in a state where the dialysate flows into the dialysate discharge line 8, the irradiated light passes through the drainage flowing through the dialysate discharge line 8. After the light is absorbed according to the concentration of the drainage, the light receiving means 12 receives the light. Thus, if the intensity of light received by the light receiving means 12 (that is, a voltage generated according to the intensity of received light) is detected, a change in the concentration of the drainage can be detected. The detecting means 13 is electrically connected to the light receiving means 12 and can detect the intensity of light received by the light receiving means 12. In this embodiment, the detection means 13 can detect a voltage generated according to the light intensity received by the light receiving means 12. Is. Therefore, the concentration of the drainage flowing through the dialysate discharge line 8 can be detected based on the light reception intensity detected by the detection means 13 (voltage generated according to the light reception intensity by the light reception means 12).

ここで、本実施形態に係る発光制御手段14は、発光手段11による発光量を制御し得るものであり、例えば当該発光手段11に供給する電流を調整し得るデジタルアンプ等にて構成されるとともに、発光手段11に対して供給する電流を異ならせることにより異なる複数の(本実施形態においては異なる2つの)発光強度の光を照射させるものである。即ち、LEDから成る発光手段11は、供給する電流に応じて照射される光の発光強度が異なる構成とされているため、発光制御手段14によって発光手段11に供給する電流を異ならせるよう制御し、複数の発光強度の光を任意タイミングにて照射させ得るのである。   Here, the light emission control means 14 according to the present embodiment can control the amount of light emitted by the light emission means 11, and is composed of, for example, a digital amplifier that can adjust the current supplied to the light emission means 11. The light supplied to the light emitting means 11 is made different so as to irradiate light having different light emission intensities (two different in this embodiment). That is, since the light emitting means 11 composed of LEDs has a configuration in which the light emission intensity of the irradiated light differs according to the supplied current, the light emission control means 14 controls the current supplied to the light emitting means 11 to be different. The light having a plurality of emission intensities can be irradiated at an arbitrary timing.

例えば、図5に示すように、弱発光強度の光と強発光強度の光とを交互に順次繰り返し発光させるよう制御されている。尚、強発光強度の光は、弱発光強度の光に対してα倍のものとされ、αは2〜6に設定されるのが好ましい。然るに、弱発光強度の光を照射させた場合及び強発光強度の光を照射させた場合の液体(本実施形態においては排液)の濃度変化に伴う受光手段12の受光電圧の推移は、図4に示す如きであり、液体の濃度が高くなるに伴って受光電圧(即ち、受光手段12の感度)が著しく低下することが分かる。   For example, as shown in FIG. 5, control is performed so that light with weak emission intensity and light with strong emission intensity are alternately and repeatedly emitted. In addition, it is preferable that the light with strong emission intensity is α times as much as the light with weak emission intensity, and α is set to 2-6. However, the transition of the light reception voltage of the light receiving means 12 with the change in the concentration of the liquid (drainage in the present embodiment) when irradiated with light with weak emission intensity and with light with strong emission intensity is shown in FIG. As shown in FIG. 4, it can be seen that the light receiving voltage (that is, the sensitivity of the light receiving means 12) significantly decreases as the liquid concentration increases.

本実施形態によれば、異なる2つの発光強度の光(弱発光強度の光及び強発光強度の光)を照射させるよう構成されているため、低濃度の液体の場合は、弱発光強度の光を照射させたときの受光手段12における受光強度を検出手段13にて検出するとともに、高濃度の液体の場合は、強発光強度の光を照射させたときの受光手段12における受光強度を検出手段13にて検出するよう制御することができる。   According to the present embodiment, light having two different light emission intensities (light with weak light emission intensity and light with high light emission intensity) is irradiated, so that light with low light emission intensity is used in the case of a low concentration liquid. The light receiving intensity in the light receiving means 12 when the light is irradiated is detected by the detecting means 13, and in the case of a high concentration liquid, the light receiving intensity in the light receiving means 12 when the light having a strong light emission intensity is irradiated is detected. 13 can be controlled to detect.

次に、上記排液濃度センサ5(濃度検出手段)の光の照射方法について説明する。
本実施形態においては、血液浄化治療前(透析治療前であって血液回路1にて血液を体外循環させる前)において、所定のキャリブレーション(校正)を行った後、血液浄化治療時(血液回路1にて血液を体外循環させた状態)に排液の濃度検出がなされるようになっている。
Next, a light irradiation method of the drainage concentration sensor 5 (concentration detection means) will be described.
In the present embodiment, before blood purification treatment (before dialysis treatment and before extracorporeal circulation of blood in blood circuit 1), after performing a predetermined calibration (calibration), blood purification treatment (blood circuit) 1 in a state where blood is circulated extracorporeally in 1).

濃度検出時においては、図5に示すように、発光手段11により弱発光強度の光と強発光強度の光とを交互に順次繰り返し発光させるよう発光制御手段14による制御がなされる。そして、検出手段13にて受光手段12による受光電圧を検出する過程において、その受光電圧が所定の閾値(予め設定した設定値)より高い場合は、液体濃度が所定範囲内であると判断し、弱発光強度の光を照射させたときの受光手段12における受光強度を検出手段13にて検出(即ち、検出値として採用)するようにする。一方、検出手段13にて受光手段12による受光電圧を検出する過程において、その受光電圧が所定の閾値(予め設定した設定値)より低い場合は、液体濃度が所定より高いと判断し、強発光強度の光を照射させたときの受光手段12における受光強度を検出手段13にて検出(即ち、検出値として採用)するようにする。   At the time of density detection, as shown in FIG. 5, the light emission control means 14 controls the light emission means 11 to emit light of weak emission intensity and light of strong emission intensity alternately and sequentially. In the process of detecting the light reception voltage by the light reception means 12 in the detection means 13, if the light reception voltage is higher than a predetermined threshold (preset value), the liquid concentration is determined to be within the predetermined range, The detection means 13 detects (that is, adopts as a detection value) the light reception intensity in the light receiving means 12 when the light of weak emission intensity is irradiated. On the other hand, in the process of detecting the light reception voltage by the light reception means 12 in the detection means 13, if the light reception voltage is lower than a predetermined threshold (preset value), it is determined that the liquid concentration is higher than the predetermined, and strong light emission is performed. The detection means 13 detects (that is, adopts as a detection value) the received light intensity in the light receiving means 12 when the light of the intensity is irradiated.

上記制御は、透析治療中の所定タイミングにて行われ、例えば透析治療開始時に1回のみ、或いは図5で示す如く一定期間毎に複数回行うようにしてもよい。そして、血液回路1にて患者の血液を体外循環させて透析治療を行わせれば、検出手段13により検出された受光強度(受光手段12による受光強度に応じて生じた電圧であって上記制御過程で採用された検出値)に基づき透析液排出ライン8を流れる排液の濃度(濃度変化)を検出することができ、その濃度変化に基づいて、例えばKt/V等の指標を演算するようにすれば、血液浄化治療中においてリアルタイムに血液浄化効率を監視することができる。   The above control is performed at a predetermined timing during the dialysis treatment. For example, the control may be performed only once at the start of dialysis treatment or a plurality of times at regular intervals as shown in FIG. If dialysis treatment is performed by circulating the patient's blood extracorporeally in the blood circuit 1, the light reception intensity detected by the detection means 13 (the voltage generated according to the light reception intensity by the light reception means 12) The concentration (change in concentration) of the drainage flowing through the dialysate discharge line 8 can be detected on the basis of the detection value employed in (1), and an index such as Kt / V is calculated based on the change in concentration. Then, blood purification efficiency can be monitored in real time during blood purification treatment.

ここで、Kt/Vとは、血液透析治療開始時と終了時の尿素窒素濃度と、該血液透析治療中における総除水量と、該血液透析治療の治療時間とを、所定の演算式に代入して算出することにより得られる指標であり、例えば、Kt/V=−ln(Ce/Cs)(但し、Ceは、血液透析治療終了時における尿素窒素濃度、Csは、血液透析治療開始時における尿素窒素濃度をそれぞれ示している。)なる演算式にて求めることができる。然るに、通常、Kt/Vの値が1.2以上であれば透析効率が適正であったと判断できる。本実施形態においては、上記演算式において尿素窒素濃度の変化をリアルタイムにて求めることができる故、血液浄化治療中(血液透析治療中)においてリアルタイムに血液浄化効率を監視することができるのである。   Here, Kt / V substitutes the urea nitrogen concentration at the start and end of hemodialysis treatment, the total water removal amount during the hemodialysis treatment, and the treatment time of the hemodialysis treatment into a predetermined arithmetic expression. For example, Kt / V = −ln (Ce / Cs) (where Ce is the urea nitrogen concentration at the end of hemodialysis treatment, and Cs is at the start of hemodialysis treatment) (The urea nitrogen concentration is shown respectively.). However, normally, if the value of Kt / V is 1.2 or more, it can be determined that the dialysis efficiency is appropriate. In this embodiment, since the change in urea nitrogen concentration can be obtained in real time in the above arithmetic expression, blood purification efficiency can be monitored in real time during blood purification treatment (during hemodialysis treatment).

上記実施形態によれば、検出手段13により検出された受光強度に基づき排液の濃度を検出し得るとともに、発光手段11により2つの異なる発光強度の光を照射し得るので、排液の濃度変化が比較的著しくても排液濃度センサ5(濃度検出手段)による液体の濃度検出の精度向上を図ることができ、当該排液濃度センサ5(濃度検出手段)の信頼性を向上させることができる。   According to the above embodiment, the concentration of the drainage can be detected based on the received light intensity detected by the detection unit 13 and the light emission unit 11 can irradiate light having two different emission intensities. Even if the water concentration is relatively significant, the accuracy of liquid concentration detection by the drainage concentration sensor 5 (concentration detection means) can be improved, and the reliability of the drainage concentration sensor 5 (concentration detection means) can be improved. .

また、排液濃度センサ5(濃度検出手段)は、発光手段11に対して供給する電流を異ならせることにより異なる複数(2つ)の発光強度の光を照射させる発光制御手段14を具備したので、発光強度毎の複数の発光手段を不要として、装置の製造コストを低減させることができるとともに当該排液濃度センサ5(濃度検出手段)の構成を簡素化させることができる。   Further, the drainage concentration sensor 5 (concentration detection means) includes the light emission control means 14 that irradiates light with different (two) emission intensities by changing the current supplied to the light emission means 11. Since a plurality of light emitting means for each light emission intensity are not required, the manufacturing cost of the apparatus can be reduced and the configuration of the drainage concentration sensor 5 (concentration detecting means) can be simplified.

更に、発光制御手段14は、発光手段により異なる発光強度の光を交互に順次繰り返し発光させるので、当該発光強度の異なる光(弱発光強度の光及び強発光強度の光)を排液に対して満遍なく照射させることができ、排液の濃度変化が頻繁になされても当該濃度変化に良好に追随させて排液濃度センサ5(濃度検出手段)による濃度検出を行わせることができる。   Further, since the light emission control means 14 causes the light emission means to emit light having different light emission intensity alternately and sequentially, light having different light emission intensity (light having weak light emission intensity and light having strong light emission intensity) is discharged to the liquid. Irradiation can be performed evenly, and even if the concentration change of the drainage liquid is frequently made, the concentration detection by the drainage concentration sensor 5 (concentration detection means) can be performed by following the concentration change well.

また更に、発光手段11により異なる2つの発光強度の光(弱発光強度の光及び強発光強度の光)を照射し得るので、単に強弱2つの発光を行わせることにより、排液の濃度変化が著しくても排液濃度センサ5(濃度検出手段)による排液の濃度検出の精度向上を図ることができ、当該排液濃度センサ5(濃度検出手段)の信頼性を向上させることができる。また、発光手段11はLEDから成るとともに受光手段12は受光強度に応じた電圧を生じさせ得る受光素子から成るので、LEDの技術的優位性(高寿命であり且つ長時間の発光に際しても高温となり難い等)を有した排液濃度センサ5(濃度検出手段)とすることができる。   Furthermore, since the light emitting means 11 can irradiate light having two different light emission intensities (light having weak light emission intensity and light having strong light emission intensity), the concentration change of the drainage can be changed simply by causing the light to emit two light intensity. Even if it is remarkable, it is possible to improve the accuracy of drainage concentration detection by the drainage concentration sensor 5 (concentration detection means), and to improve the reliability of the drainage concentration sensor 5 (concentration detection means). Further, since the light emitting means 11 is composed of an LED and the light receiving means 12 is composed of a light receiving element capable of generating a voltage corresponding to the intensity of received light, the technical advantage of the LED (high lifetime and high temperature even during long-time light emission). The drainage concentration sensor 5 (concentration detection means) having the difficulty).

更に、本実施形態においては、濃度検出手段は、ダイアライザ2(血液浄化器)から排出された排液の濃度を検出して血液浄化効率を監視し得る排液濃度センサ5から成るので、血液浄化に伴う排液の濃度検出における精度向上を図ることができるとともに、血液浄化効率をリアルタイム且つ高精度に監視することができる。尚、本実施形態においては、排液濃度センサ5にて検出された排液の濃度からKt/Vなる指標を算出して血液浄化効率(透析効率)を求めているが、他の指標を算出して血液浄化効率(透析効率)を求めるようにしてもよい。   Furthermore, in the present embodiment, the concentration detection means comprises the drainage concentration sensor 5 that can monitor the blood purification efficiency by detecting the concentration of the drainage discharged from the dialyzer 2 (blood purifier). As a result, it is possible to improve the accuracy in detecting the concentration of drainage accompanying the blood flow and to monitor the blood purification efficiency in real time and with high accuracy. In the present embodiment, the blood purification efficiency (dialysis efficiency) is obtained by calculating an index Kt / V from the concentration of the drainage detected by the drainage concentration sensor 5, but other indices are calculated. Then, blood purification efficiency (dialysis efficiency) may be obtained.

尚、適用される濃度検出手段は、排液濃度センサ5に限定されず、透析装置本体6内の透析液排出ライン8に配設されてダイアライザ2(血液浄化器)から排出された排液の濃度から漏血を検出し得る漏血検出器から成るもの、或いは患者の血液を体外循環させるための血液回路1に配設され、当該血液回路1を流れる血液の濃度を検出し得る血液濃度センサ(例えば、血液におけるヘマトクリット値を測定するためのヘマトクリットセンサ)から成るもの等であってもよい。   The applied concentration detection means is not limited to the drainage concentration sensor 5, but is disposed in the dialysate discharge line 8 in the dialyzer body 6 and the drainage discharged from the dialyzer 2 (blood purifier). A blood concentration sensor comprising a blood leakage detector capable of detecting blood leakage from the concentration, or a blood concentration sensor disposed in the blood circuit 1 for circulating the patient's blood extracorporeally and capable of detecting the concentration of blood flowing through the blood circuit 1 (For example, a hematocrit sensor for measuring a hematocrit value in blood) may be used.

濃度検出手段が、ダイアライザ2(血液浄化器)から排出された排液の濃度から漏血を検出し得る漏血検出器から成るものとした場合、血液浄化に伴う排液の漏血検出における精度向上を図ることができるとともに、濃度検出手段が、患者の血液を体外循環させるための血液回路1に配設され、当該血液回路1を流れる血液の濃度を検出し得る血液濃度センサから成るものとした場合、血液浄化に伴う血液濃度検出における精度向上を図ることができる。   When the concentration detection means is composed of a blood leakage detector capable of detecting blood leakage from the concentration of the drainage discharged from the dialyzer 2 (blood purifier), the accuracy in detecting the leakage of the drainage accompanying blood purification It is possible to improve the concentration, and the concentration detection means is provided in the blood circuit 1 for circulating the patient's blood extracorporeally, and comprises a blood concentration sensor capable of detecting the concentration of blood flowing through the blood circuit 1. In this case, it is possible to improve accuracy in blood concentration detection accompanying blood purification.

以上、本実施形態について説明したが、本発明はこれに限定されるものではなく、例えば排液濃度センサ、漏血検出器または血液濃度センサの他、血液浄化装置における液体の濃度を検出し得るたの濃度検出手段に適用するようにしてもよい。また、本実施形態においては、発光手段11により異なる2つの発光強度の光を照射させているが、これに代えて3つ以上の複数の異なる発光強度の光を発光手段11にて照射させるようにしてもよい。   Although the present embodiment has been described above, the present invention is not limited to this. For example, in addition to a drainage concentration sensor, a blood leak detector, or a blood concentration sensor, the concentration of liquid in the blood purification device can be detected. You may make it apply to the other density | concentration detection means. In this embodiment, the light emitting means 11 emits light having two different light emission intensities. Instead, the light emitting means 11 emits light having three or more different light emission intensities. It may be.

更に、本実施形態においては、排液濃度センサ5(濃度検出手段)が、発光手段11に対して供給する電流を異ならせることにより異なる複数の発光強度の光を照射させる発光制御手段14を具備して構成されているが、発光手段11を複数(2つ或いは3つ以上)配設し、それぞれから異なる複数の発光強度の光を照射させるようにしてもよい。   Further, in the present embodiment, the drainage concentration sensor 5 (concentration detection unit) includes a light emission control unit 14 that irradiates light having a plurality of different emission intensities by changing the current supplied to the light emission unit 11. However, a plurality of (two or three or more) light emitting means 11 may be provided, and light having a plurality of different emission intensities may be irradiated from each.

更に、本実施形態においては、発光手段としてLEDを用いているが、光源として機能し得る他の手段(例えば、UVランプ、ハロゲンランプ、蛍光灯、有機EL等)に代えてもよい。尚、本実施形態においては血液透析装置に適用されているが、体外循環させつつ血液浄化を行う他の治療(血液濾過療法や血液濾過透析療法など)で使用される血液浄化装置に適用するようにしてもよい。   Furthermore, in this embodiment, LEDs are used as the light emitting means, but other means (for example, a UV lamp, a halogen lamp, a fluorescent lamp, an organic EL, etc.) that can function as a light source may be used. In addition, although applied to the hemodialysis apparatus in this embodiment, it is applied to the blood purification apparatus used in other treatments (blood filtration therapy, blood filtration dialysis therapy, etc.) that purify blood while circulating extracorporeally. It may be.

検出手段により検出された受光強度に基づき液体の濃度を検出し得るとともに、発光手段により異なる複数の発光強度の光を照射し得る血液浄化装置であれば、他の機能が付加されたもの等にも適用することができる。   As long as it is a blood purification device that can detect the concentration of the liquid based on the received light intensity detected by the detecting means and can irradiate light having a plurality of different light emission intensities by the light emitting means, the device to which other functions are added, etc. Can also be applied.

1 血液回路
1a 動脈側血液回路
1b 静脈側血液回路
2 ダイアライザ(血液浄化器)
3 血液ポンプ
4a、4b…ドリップチャンバ
5 排液濃度センサ(濃度検出手段)
6 透析装置本体
7 透析液導入ライン
8 透析液排出ライン
9 バイパスライン
10 除水ポンプ
11 発光手段
12 受光手段
13 検出手段
14 発光制御手段
DESCRIPTION OF SYMBOLS 1 Blood circuit 1a Arterial blood circuit 1b Venous blood circuit 2 Dialyzer (blood purifier)
3 Blood pump 4a, 4b ... Drip chamber 5 Drainage concentration sensor (concentration detection means)
6 Dialysis machine body 7 Dialysate introduction line 8 Dialysate discharge line 9 Bypass line 10 Dewatering pump 11 Light emitting means 12 Light receiving means 13 Detection means 14 Light emission control means

Claims (8)

患者の血液を体外循環させつつ浄化する血液浄化器と、血液浄化に伴って流れる液体の濃度を検出する濃度検出手段とを具備した血液浄化装置において、
前記濃度検出手段は、
前記液体に対して光を照射し得る発光手段と、
前記液体を透過した前記発光手段からの透過光を受け得る受光手段と、
前記受光手段による受光強度を検出し得る検出手段と、
を具備し、前記検出手段により検出された受光強度に基づき液体の濃度を検出し得るとともに、前記発光手段により異なる複数の発光強度の光を照射し得ることを特徴とする血液浄化装置。
In a blood purification apparatus comprising a blood purifier for purifying a patient's blood while circulating outside the body, and a concentration detection means for detecting the concentration of a liquid flowing along with the blood purification,
The concentration detecting means includes
A light emitting means capable of irradiating the liquid with light;
A light receiving means capable of receiving transmitted light from the light emitting means that has passed through the liquid;
Detecting means capable of detecting the intensity of light received by the light receiving means;
The blood purification apparatus is characterized in that the concentration of the liquid can be detected based on the received light intensity detected by the detection means, and the light emission means can irradiate light having a plurality of different light emission intensities.
前記濃度検出手段は、前記発光手段に対して供給する電流を異ならせることにより異なる複数の発光強度の光を照射させる発光制御手段を具備したことを特徴とする請求項1記載の血液浄化装置。   2. The blood purification apparatus according to claim 1, wherein the concentration detection means comprises a light emission control means for irradiating light having a plurality of different light emission intensities by varying the current supplied to the light emission means. 前記発光制御手段は、前記発光手段により異なる発光強度の光を交互に順次繰り返し発光させることを特徴とする請求項2記載の血液浄化装置。   3. The blood purification apparatus according to claim 2, wherein the light emission control unit causes the light emission unit to repeatedly and alternately emit light having different light emission intensities. 前記発光手段により異なる2つの発光強度の光を照射し得ることを特徴とする請求項1〜3の何れか1つに記載の血液浄化装置。   The blood purification apparatus according to any one of claims 1 to 3, wherein the light emitting means can irradiate light having two different emission intensities. 前記発光手段はLEDから成るとともに前記受光手段は受光強度に応じた電圧を生じさせ得る受光素子から成ることを特徴とする請求項1〜4の何れか1つに記載の血液浄化装置。   The blood purification apparatus according to any one of claims 1 to 4, wherein the light emitting means comprises an LED and the light receiving means comprises a light receiving element capable of generating a voltage corresponding to a light receiving intensity. 前記濃度検出手段は、前記血液浄化器から排出された排液の濃度を検出して血液浄化効率を監視し得る排液濃度センサから成ることを特徴とする請求項1〜5の何れか1つに記載の血液浄化装置。   6. The drainage concentration sensor according to claim 1, wherein the concentration detection means comprises a drainage concentration sensor capable of detecting the concentration of drainage discharged from the blood purifier and monitoring blood purification efficiency. The blood purification apparatus according to 1. 前記濃度検出手段は、血液浄化器から排出された排液の濃度から漏血を検出し得る漏血検出器から成ることを特徴とする請求項1〜5の何れか1つに記載の血液浄化装置。   The blood purification device according to any one of claims 1 to 5, wherein the concentration detection means comprises a blood leakage detector capable of detecting blood leakage from the concentration of drainage discharged from the blood purification device. apparatus. 前記濃度検出手段は、患者の血液を体外循環させるための血液回路に配設され、当該血液回路を流れる血液の濃度を検出し得る血液濃度センサから成ることを特徴とする請求項1〜5の何れか1つに記載の血液浄化装置。   6. The blood concentration sensor according to claim 1, wherein the concentration detector comprises a blood concentration sensor disposed in a blood circuit for circulating the patient's blood extracorporeally and capable of detecting the concentration of blood flowing through the blood circuit. The blood purification apparatus as described in any one.
JP2009282879A 2009-12-14 2009-12-14 Blood purification equipment Active JP5491844B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009282879A JP5491844B2 (en) 2009-12-14 2009-12-14 Blood purification equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009282879A JP5491844B2 (en) 2009-12-14 2009-12-14 Blood purification equipment

Publications (2)

Publication Number Publication Date
JP2011120823A true JP2011120823A (en) 2011-06-23
JP5491844B2 JP5491844B2 (en) 2014-05-14

Family

ID=44285362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009282879A Active JP5491844B2 (en) 2009-12-14 2009-12-14 Blood purification equipment

Country Status (1)

Country Link
JP (1) JP5491844B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015030233A1 (en) 2013-09-02 2015-03-05 日機装株式会社 Blood purifier
JP2018112462A (en) * 2017-01-11 2018-07-19 東レエンジニアリング株式会社 Constituent concentration detection system
JP2018115946A (en) * 2017-01-18 2018-07-26 パイオニア株式会社 Measurement device, measurement method, computer program and recording medium
US10307522B2 (en) 2014-05-12 2019-06-04 Nikkiso Company Limited Blood purification apparatus
US10625007B2 (en) 2015-06-24 2020-04-21 Nikkiso Company Limited Blood purification apparatus and blood purification system
JP2021067652A (en) * 2019-10-28 2021-04-30 株式会社リコー Absorbance measuring device, biological information measuring device, and absorbance measuring method
US11156557B2 (en) 2017-03-17 2021-10-26 Ricoh Company, Ltd. Chemiluminescence analyzer, blood purification apparatus, and blood purification system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002516722A (en) * 1998-06-04 2002-06-11 アルティン メディカル アーベー Method for determining waste products in dialysate in dialysis treatment
JP2004000479A (en) * 1995-02-13 2004-01-08 Aksys Ltd Modular type home dialysis system
JP2004354157A (en) * 2003-05-28 2004-12-16 Fuji Photo Film Co Ltd Light measuring instrument and light measuring method
JP2009222412A (en) * 2008-03-13 2009-10-01 Jms Co Ltd Component-measuring implement and hemodialyzer equipped with component-measuring implement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004000479A (en) * 1995-02-13 2004-01-08 Aksys Ltd Modular type home dialysis system
JP2002516722A (en) * 1998-06-04 2002-06-11 アルティン メディカル アーベー Method for determining waste products in dialysate in dialysis treatment
JP2004354157A (en) * 2003-05-28 2004-12-16 Fuji Photo Film Co Ltd Light measuring instrument and light measuring method
JP2009222412A (en) * 2008-03-13 2009-10-01 Jms Co Ltd Component-measuring implement and hemodialyzer equipped with component-measuring implement

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015030233A1 (en) 2013-09-02 2015-03-05 日機装株式会社 Blood purifier
US11090419B2 (en) 2013-09-02 2021-08-17 Nikkiso Company Limited Blood purification apparatus
US10307522B2 (en) 2014-05-12 2019-06-04 Nikkiso Company Limited Blood purification apparatus
US10625007B2 (en) 2015-06-24 2020-04-21 Nikkiso Company Limited Blood purification apparatus and blood purification system
JP2018112462A (en) * 2017-01-11 2018-07-19 東レエンジニアリング株式会社 Constituent concentration detection system
WO2018131348A1 (en) * 2017-01-11 2018-07-19 東レエンジニアリング株式会社 Component concentration detection system
JP2018115946A (en) * 2017-01-18 2018-07-26 パイオニア株式会社 Measurement device, measurement method, computer program and recording medium
US11156557B2 (en) 2017-03-17 2021-10-26 Ricoh Company, Ltd. Chemiluminescence analyzer, blood purification apparatus, and blood purification system
JP2021067652A (en) * 2019-10-28 2021-04-30 株式会社リコー Absorbance measuring device, biological information measuring device, and absorbance measuring method

Also Published As

Publication number Publication date
JP5491844B2 (en) 2014-05-14

Similar Documents

Publication Publication Date Title
JP6027720B2 (en) Blood purification equipment
WO2011074576A1 (en) Blood purification device
JP5491844B2 (en) Blood purification equipment
JP4868772B2 (en) Blood purification equipment
JP6147146B2 (en) Blood purification equipment
JP2007105149A (en) Blood purifying device and method of computing recirculation rate
JP4573231B2 (en) Blood purification equipment
CN100548392C (en) Apparatus for purifying blood
JP5736268B2 (en) Blood purification equipment
JP5222706B2 (en) Blood purification apparatus and blood flow calculation method thereof
JP2010136746A (en) Hemodialyzer
JP2017012648A (en) Blood purification device and flow calculation method of access blood vessel by blood purification device
CN111225694A (en) Blood purification device
JP6914803B2 (en) Blood purification device
JP2019072284A (en) Blood purification device
JP2007105148A (en) Blood purifying device and method of computing recirculation rate
JP5237007B2 (en) Blood purification equipment
JP2008036304A (en) Blood purifying device and method for determining position of mounting its blood concentration detecting means
JP2019072285A (en) Blood purification device
JP2018086036A (en) Drive support device
JP2019072283A (en) Blood purification device
JP2010068927A (en) Blood purifying apparatus

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120921

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130920

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130924

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20131122

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140217

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140228

R150 Certificate of patent or registration of utility model

Ref document number: 5491844

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250