JP2006528304A - 遠心ポンプ - Google Patents
遠心ポンプ Download PDFInfo
- Publication number
- JP2006528304A JP2006528304A JP2006521412A JP2006521412A JP2006528304A JP 2006528304 A JP2006528304 A JP 2006528304A JP 2006521412 A JP2006521412 A JP 2006521412A JP 2006521412 A JP2006521412 A JP 2006521412A JP 2006528304 A JP2006528304 A JP 2006528304A
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- Prior art keywords
- rotor
- housing
- pump
- centrifugal pump
- blood
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/048—Bearings magnetic; electromagnetic
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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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/226—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
- A61M60/232—Centrifugal pumps
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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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
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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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/81—Pump housings
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
- A61M60/82—Magnetic bearings
- A61M60/822—Magnetic bearings specially adapted for being actively controlled
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
- A61M60/824—Hydrodynamic or fluid film bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/064—Details of the magnetic circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
- F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
- F04D29/0416—Axial thrust balancing balancing pistons
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
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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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
- A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Cardiology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- External Artificial Organs (AREA)
- Prostheses (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
1. 血液/液体へ放出される損失熱を少なくしかつエネルギ貯蔵装置を小さく保つため、高い液圧効率。
2. 気密なポンプハウジング内における回転子の完全に無接触な回転。それにより機械的摩擦によるいかなる消耗、摩耗及び局部的な熱発生も防止される。
3. 液体損傷又は血液凝固の活動化を回避するため、ポンプにおける定常渦、死水、血液/液体の最小滞在時間の回避。
4. 血液ポンプにおいてポンプを通過する際血液が受ける細胞損傷推力応力の最小化。
5. エネルギ消費を同時に減少する際、センサに基く回転子の複雑な位置制御装置の排除による故障安全性。
6. 摩耗を受ける支持軸を持つ駆動電動機の排除。
R 回転子のカバーの半径
r1 回転子にある流入開口の半径
r2 絞り間隙の入口の半径
r3 カバーの永久磁石範囲の始端の半径
r4 ハウジングの内側半径
r5 円形環状間隙の外側半径
H 回転子周囲における回転子側方空間の幅
h 絞り間隙の軸線方向幅
h1 回転子入口における羽根高さ
h2 回転子周囲における羽根高さ
h3 円形環状間隙の高さ
l 絞り間隙の半径方向長さ(r2−r1)
d カバーの厚さ
6Nm−2の平均推力応力T=Y・ηが得られる。従ってこの推力応力は、新しい検査により推力力による血液損傷のため危険とみなされる400Nm−2の限界値より1けただけ下にある(Paul,P.,et al.,Shear stress related blood damage in laminar couette flow.Antif Organs,2003,27(6):p.517−29)。
Claims (8)
- 心臓の代用又は援助装置における血液用の遠心ポンプであって、少なくとも1つの人口及び少なくとも1つの出口開口(12,13)を除いて液密及び気密に閉じられるハウジング(11)内に軸受なしに回転可能に設けられるポンプ回転子(14)が、同時に駆動電動機の回転子であり、1つ又は周囲にわたって均一に分布される複数の永久磁化範囲を持ち、ハウジング(1)外で回転子(14)の上及び下に駆動電動機の固定子(18,19)が設けられ、その結果固定子(18,19)が、これらと回転子(14)の永久磁化される範囲との間の間隙に、回転する磁束を生じるものにおいて、回転子(14)がその中間面に対して対称に形成され、かつ上部及び下部のカバー(16,17,16′,17′)を持ち、上部及び下部のカバー(16,17,16′,17′)と上部及び下部のハウジング壁との軸線方向間隔が、回転子(14)の半径方向内側範囲において、半径方向外側範囲におけるより小さいように、回転子(14)及び/又はポンプハウジング(11)が形成されて、回転子(14)の半径方向内側範囲において回転子側方空間(26,26′,27,27′)がそれぞれ1つの絞り間隙(116,117)を持ち、これらの絞り間隙が運転中に回転子側方空間(26,26′,27,27′)内の半径方向内方へ向く逆流に影響を及ぼして、回転子(14)の軸線方向偏位の際、回転子(14)の上及び下に異なる圧力分布が生じるようにし、それによりカバー(16,16′,17,17′)の主要面に作用する力が発生され、これらの力が回転子(14)の軸線方向安定化を行い、ハウジング(11)内における回転子(14)の傾倒に抗して同じように作用することを特徴とする、遠心ポンプ。
- 上部及び下部の回転子カバー(16,17,16′,17′)とハウジングの上側及び下側との間隔が、半径方向内方へ連続的に減少していることを特徴とする、請求項1に記載の遠心ポンプ。
- 回転子(14)の半径方向内側範囲において、回転子カバー(16,17)と上部及び下部のハウジング壁との間の環状狭隘個所が絞り間隙(116,117)として形成されていることを特徴とする、請求項1に記載の遠心ポンプ。
- 環状狭隘個所が、回転子(14)及びハウジング(11)にある環状の突起又は隆起(132,133)により形成されていることを特徴とする、請求項3に記載の遠心ポンプ。
- 回転子(14)の半径方向心出しが磁気抵抗力により受動的に行われることを特徴とする、請求項1〜4の1つに記載の遠心ポンプ。
- 回転子(14)が完全に常磁性及び/又は強磁性の材料から製造されていることを特徴とする、請求項1〜5の1つに記載の遠心ポンプ。
- 少なくとも液体に接触する表面が、液体の性質に合わせた被覆を備えていることを特徴とする、請求項1〜6の1つに記載の遠心ポンプ。
- 遠心ポンプが身体に内移植可能な血液ポンプであることを特徴とする、請求項1〜7の1つに記載の遠心ポンプ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10330434A DE10330434A1 (de) | 2003-07-04 | 2003-07-04 | Zentrifugal-Pumpe |
PCT/EP2004/007211 WO2005003565A1 (de) | 2003-07-04 | 2004-07-02 | Zentrifugal-pumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006528304A true JP2006528304A (ja) | 2006-12-14 |
JP4656332B2 JP4656332B2 (ja) | 2011-03-23 |
Family
ID=33559909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006521412A Expired - Fee Related JP4656332B2 (ja) | 2003-07-04 | 2004-07-02 | 遠心ポンプ |
Country Status (8)
Country | Link |
---|---|
US (1) | US7699588B2 (ja) |
EP (1) | EP1642033B1 (ja) |
JP (1) | JP4656332B2 (ja) |
AT (1) | ATE458147T1 (ja) |
DE (2) | DE10330434A1 (ja) |
DK (1) | DK1642033T3 (ja) |
ES (1) | ES2339553T3 (ja) |
WO (1) | WO2005003565A1 (ja) |
Cited By (4)
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US9981076B2 (en) | 2012-03-02 | 2018-05-29 | Tc1 Llc | Ventricular cuff |
US10894116B2 (en) | 2016-08-22 | 2021-01-19 | Tc1 Llc | Heart pump cuff |
US11235137B2 (en) | 2017-02-24 | 2022-02-01 | Tc1 Llc | Minimally invasive methods and devices for ventricular assist device implantation |
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US8752449B2 (en) | 2007-05-08 | 2014-06-17 | Brooks Automation, Inc. | Substrate transport apparatus with multiple movable arms utilizing a mechanical switch mechanism |
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- 2004-07-02 WO PCT/EP2004/007211 patent/WO2005003565A1/de active Application Filing
- 2004-07-02 AT AT04740570T patent/ATE458147T1/de not_active IP Right Cessation
- 2004-07-02 US US10/562,649 patent/US7699588B2/en not_active Expired - Fee Related
- 2004-07-02 DK DK04740570.9T patent/DK1642033T3/da active
- 2004-07-02 ES ES04740570T patent/ES2339553T3/es active Active
- 2004-07-02 EP EP04740570A patent/EP1642033B1/de not_active Not-in-force
- 2004-07-02 DE DE502004010769T patent/DE502004010769D1/de active Active
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US9981076B2 (en) | 2012-03-02 | 2018-05-29 | Tc1 Llc | Ventricular cuff |
US11369785B2 (en) | 2012-03-02 | 2022-06-28 | Tc1 Llc | Ventricular cuff |
JP2015512687A (ja) * | 2012-03-05 | 2015-04-30 | ソーラテック コーポレイション | モジュール式埋込型医療ポンプ |
US10894116B2 (en) | 2016-08-22 | 2021-01-19 | Tc1 Llc | Heart pump cuff |
US11583671B2 (en) | 2016-08-22 | 2023-02-21 | Tc1 Llc | Heart pump cuff |
US11235137B2 (en) | 2017-02-24 | 2022-02-01 | Tc1 Llc | Minimally invasive methods and devices for ventricular assist device implantation |
Also Published As
Publication number | Publication date |
---|---|
DK1642033T3 (da) | 2010-05-31 |
EP1642033A1 (de) | 2006-04-05 |
EP1642033B1 (de) | 2010-02-17 |
ATE458147T1 (de) | 2010-03-15 |
JP4656332B2 (ja) | 2011-03-23 |
DE10330434A1 (de) | 2005-02-03 |
WO2005003565A1 (de) | 2005-01-13 |
DE502004010769D1 (de) | 2010-04-01 |
ES2339553T3 (es) | 2010-05-21 |
US7699588B2 (en) | 2010-04-20 |
US20060247486A1 (en) | 2006-11-02 |
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