JP4584959B2 - 2ステージ型透析濾過方法および装置 - Google Patents
2ステージ型透析濾過方法および装置 Download PDFInfo
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- JP4584959B2 JP4584959B2 JP2007176472A JP2007176472A JP4584959B2 JP 4584959 B2 JP4584959 B2 JP 4584959B2 JP 2007176472 A JP2007176472 A JP 2007176472A JP 2007176472 A JP2007176472 A JP 2007176472A JP 4584959 B2 JP4584959 B2 JP 4584959B2
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/3413—Diafiltration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/3413—Diafiltration
- A61M1/3417—Diafiltration using distinct filters for dialysis and ultra-filtration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/342—Adding solutions to the blood, e.g. substitution solutions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/342—Adding solutions to the blood, e.g. substitution solutions
- A61M1/3424—Substitution fluid path
- A61M1/3431—Substitution fluid path upstream of the filter
- A61M1/3434—Substitution fluid path upstream of the filter with pre-dilution and post-dilution
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/342—Adding solutions to the blood, e.g. substitution solutions
- A61M1/3424—Substitution fluid path
- A61M1/3437—Substitution fluid path downstream of the filter, e.g. post-dilution with filtrate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/342—Adding solutions to the blood, e.g. substitution solutions
- A61M1/3441—Substitution rate control as a function of the ultrafiltration rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
- A61M1/342—Adding solutions to the blood, e.g. substitution solutions
- A61M1/3455—Substitution fluids
- A61M1/3465—Substitution fluids using dialysate as substitution fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2230/00—Measuring parameters of the user
- A61M2230/20—Blood composition characteristics
- A61M2230/207—Blood composition characteristics hematocrit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/929—Hemoultrafiltrate volume measurement or control processes
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
本発明の場合には、双方の透析器ステージにおいて透析液流を対向流としつつ血漿水の順方向濾過が双方の透析器ステージにおいて起こることであり、これに対して、従来技術によるシステムにおいては、双方の透析器ステージにおいて透析液を対向流としつつ第1透析器において血漿水の順方向濾過を行いかつ第2透析器において逆方向濾過を行うことである。加えて、本発明においては、置換流体は、2つの透析器ステージの間において、血液流に対して直接的に追加される。これに対して、従来技術においては、一方の透析器メンブランを挿通して置換流体の逆方向濾過が行われる。
Delta TMP = 0.5×(Pa−Pv) + (Pdi−Pdo)
Delta TMP = 0.5×(C1×Qb+C2×Qs+C3×[Qs2]/Qb)+ (Pdi−Pdo)
ここで、Qbは、血液ポンピング速度であり、Qsは、置換流体速度であり、C1,C2,C3は、与えられた透析器の組合せに関しての、血液側における圧力降下(Pa−Pv)を予測し得るような定数である。
Qd_interstage = Qd − Qs×[R/(1+R)]
ここで、Qdは、透析液流速であり、Qsは、置換流体流速であり、Rは、UF1/UF2(すなわち、第1透析器の濾過速度を、第2透析器の濾過速度で割算したもの)の所望比として規定された定数である。
Qd interstage = Qd − Qs×[R/(1+R)]
ここで、Qdは、透析液流速であり、Qsは、置換流体流速であり、Rは、UF1/UF2(すなわち、正味のUFが患者から除去されない場合に、第1透析器の濾過速度を、第2透析器の濾過速度で割算したもの)の所望比である。
Qd interstage = Qd − M1×Qb
ここで、Qdは、透析液流速であり、Qbは、血液ポンピング速度であり、M1は、第1透析器ステージ(UF1)において濾過される血液流速の最大パーセントに基づいた定数である。
UF1 max = M1×Qb
Qb_interstage = Qb − Qs×[R/(1+R)]
ここで、Qbは、流入血液流速であり、Qsは、置換流体流速であり、Rは、UF1/UF2(すなわち、正味のUFが患者から除去されない場合に、第1透析器の濾過速度を、第2透析器の濾過速度で割算したもの)として規定された定数である。
Qb interstage = Qb − M1×Qb
ここで、Qbは、血液ポンピング速度であり、M1は、第1透析器ステージ(UF1)において濾過される血液流速の最大パーセントと規定する定数である。
UF1 max = M1×Qb
2 第2透析器カートリッジ(第2透析器)
3 清浄化されるべき血液
4 血液隔室(第1血液隔室)
5 透析液隔室(第1透析液隔室)
7 部分的に透析濾過された血液
8 混合チャンバ(混合手段)
9 血液と置換流体との混合物
10 滅菌置換流体(置換流体)
11 血液隔室(第2血液隔室)
12 透析液隔室(第2透析液隔室)
22 ステージ間介在透析液ポンプ
35 オンライン式置換流体供給システム(置換流体源)
51 ステージ間介在コントローラ(制御ユニット)
60 ステージ間介在血液ポンプ
Claims (3)
- 置換流体源と血液透析機械とを具備した血液透析システムにおいて、血液透析濾過システムが、
清浄化されるべき血液を受領するための第1血液導入部および部分的に透析濾過された血液を導出するための第1血液導出部を有した第1血液隔室と、第1透析液導入部および第1透析液導出部を有した第1透析液隔室と、を備えた第1透析器と;
前記部分的に透析濾過された血液に対して前記置換流体供給源からの置換流体を混合することによって、血液と置換流体との混合物を形成するための混合手段と;
前記混合物を受領するための第2血液導入部および透析濾過された血液を導出するための第2血液導出部を有した第2血液隔室と、第2透析液導入部および第2透析液導出部を有した第2透析液隔室と、を備えた第2透析器と;
前記第2透析液隔室と前記第1透析液隔室との間において透析液をポンピングし、これにより、この血液透析濾過システムによって行われる濾過を制御するような、ステージ間介在透析液ポンプと;
前記第1血液隔室と前記第2血液隔室との間において血液をポンピングするステージ間介在血液ポンプと;
前記第1血液隔室と前記混合手段との間の血液経路内に配置された血液ヘマトクリット値センサからの、清浄化されるべき血液のヘマトクリット値に関する入力に基づいて、前記ステージ間介在血液ポンプの動作を制御する制御ユニットと:
を具備することを特徴とする血液透析濾過システム。 - 請求項1記載のシステムにおいて、
前記第2透析液隔室と前記第1透析液隔室との間における透析液流速に関する入力に基づいて前記ステージ間介在透析液ポンプの動作を制御する制御ユニットを具備していることを特徴とするシステム。 - 請求項1記載のシステムにおいて、
前記第1および前記第2透析器のうちの少なくとも一方における膜差圧に関する入力に基づいて前記ステージ間介在透析液ポンプの動作を制御する制御ユニットを具備していることを特徴とするシステム。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/702,046 US6406631B1 (en) | 1999-07-30 | 2000-10-30 | Two stage diafiltration method and apparatus |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002539049A Division JP2004512873A (ja) | 2000-10-30 | 2001-10-30 | 2ステージ型透析濾過方法および装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007244918A JP2007244918A (ja) | 2007-09-27 |
JP4584959B2 true JP4584959B2 (ja) | 2010-11-24 |
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Application Number | Title | Priority Date | Filing Date |
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JP2002539049A Withdrawn JP2004512873A (ja) | 2000-10-30 | 2001-10-30 | 2ステージ型透析濾過方法および装置 |
JP2007176472A Expired - Fee Related JP4584959B2 (ja) | 2000-10-30 | 2007-07-04 | 2ステージ型透析濾過方法および装置 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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JP2002539049A Withdrawn JP2004512873A (ja) | 2000-10-30 | 2001-10-30 | 2ステージ型透析濾過方法および装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6406631B1 (ja) |
EP (1) | EP1347822B1 (ja) |
JP (2) | JP2004512873A (ja) |
AT (1) | ATE546215T1 (ja) |
AU (1) | AU2002225813A1 (ja) |
CA (1) | CA2427251C (ja) |
WO (1) | WO2002036247A1 (ja) |
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- 2001-10-30 JP JP2002539049A patent/JP2004512873A/ja not_active Withdrawn
- 2001-10-30 WO PCT/US2001/045368 patent/WO2002036247A1/en active Application Filing
- 2001-10-30 EP EP01992608A patent/EP1347822B1/en not_active Expired - Lifetime
- 2001-10-30 CA CA002427251A patent/CA2427251C/en not_active Expired - Fee Related
- 2001-10-30 AT AT01992608T patent/ATE546215T1/de active
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Also Published As
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JP2007244918A (ja) | 2007-09-27 |
CA2427251C (en) | 2009-07-21 |
EP1347822A4 (en) | 2006-03-29 |
AU2002225813A1 (en) | 2002-05-15 |
EP1347822A1 (en) | 2003-10-01 |
WO2002036247A9 (en) | 2004-05-13 |
US6406631B1 (en) | 2002-06-18 |
JP2004512873A (ja) | 2004-04-30 |
CA2427251A1 (en) | 2002-05-10 |
WO2002036247A1 (en) | 2002-05-10 |
ATE546215T1 (de) | 2012-03-15 |
EP1347822B1 (en) | 2012-02-22 |
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