JP4517076B2 - 動圧軸受を備えた人工心臓ポンプ - Google Patents
動圧軸受を備えた人工心臓ポンプ Download PDFInfo
- Publication number
- JP4517076B2 JP4517076B2 JP2005183582A JP2005183582A JP4517076B2 JP 4517076 B2 JP4517076 B2 JP 4517076B2 JP 2005183582 A JP2005183582 A JP 2005183582A JP 2005183582 A JP2005183582 A JP 2005183582A JP 4517076 B2 JP4517076 B2 JP 4517076B2
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- casing
- cylindrical portion
- dynamic pressure
- artificial heart
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- F04D29/047—Bearings hydrostatic; hydrodynamic
-
- 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
- A61M60/196—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body replacing the entire heart, e.g. total artificial hearts [TAH]
-
- 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
-
- 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
-
- 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
-
- 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
- F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working 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
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Mechanical Engineering (AREA)
- Cardiology (AREA)
- Animal Behavior & Ethology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- External Artificial Organs (AREA)
Description
33から吐出部材34の吐出口35を経て体内に循環させることができる。
2 下側ケーシング
3 上側ケーシング
4 内側ケーシング
5 インペラ
6 ベーン
7 円筒面
8 インペラ本体
9 インペラ軸受部材
10 円板部
11 上方円筒部
12 下方円筒部
13 外周面
14 ラジアル動圧溝
15 上面
16 スラスト動圧溝
17 ケーシング軸受部材
18 円筒状内周面
19 下端面
20 中心開口
21 永久磁石
22 電磁石
23 ベーン開口
24 案内突起
25 傾斜端面
26 ケーシング上面
27 下端面
28 流入口
29 接続管
30 円筒部
31 外周フランジ部
32 ボルト
33 吐出通路
34 吐出部材
Claims (4)
- ケーシング内に設けられるインペラにより血液を循環させる人工心臓ポンプにおいて、
前記インペラは、上方中心部に形成された流入口と、該流入口に連通する中心開口を備える上方円筒部と、外周面に沿って複数の極をもつ永久磁石が配置された下方円筒部と、下面側に前記中心開口を介し前記流入口に連通する開口を中心として放射状に延びる複数のベーンとを備え、
前記ケーシングは、前記永久磁石に対向する電磁石を備え、該電磁石は、その中心線が、非通電時に前記永久磁石の中心線に対し上方となるよう配置されており、
該電磁石の通電時、前記ケーシングの内部において前記インペラを浮上させるようにするとともに、前記インペラの上方円筒部外周面とこれに対向するケーシング内周面のいずれかに動圧溝を備えたラジアル動圧軸受を形成し、かつ、前記インペラの上面とこれに対向するケーシング下端面のいずれかに動圧溝を備えたスラスト動圧軸受を形成したことを特徴とする人工心臓ポンプ。 - 前記インペラは、外周が円筒面をなしているインペラ本体と、該インペラ本体に固定されたインペラ軸受部材とを有し、該インペラ軸受部材は、前記インペラ本体の円筒面と一致する外径を備えた円板と、該円板の上方に突出する前記上方円筒部と、該円板の下方に突出する前記下方円筒部とを備え、前記インペラ本体は、前記上方円筒部の上方中心部に形成された前記流入口を備えるとともに、前記永久磁石が、前記下方円筒部外周面に沿って配置されていることを特徴とする請求項1記載の動圧軸受を備えた人工心臓ポンプ。
- 前記ケーシングは、前記上方円筒部の外周面に対向する内周面と、前記上方円筒部の上面に対向する下端面とを備えたケーシング軸受部材を、ケーシング本体と別体に形成し、両者を結合してなることを特徴とする請求項1記載の動圧軸受を備えた人工心臓ポンプ。
- 前記ケーシングにおいて前記ベーンの端面が対向する底面には、前記インペラの流入口の直下に略円錐面をなす案内突起を固定して、該案内突起により流体を中心側から外周方向に案内し、前記ベーンをセミオープンベーンの態様で作動することを特徴とする請求項1記載の動圧軸受を備えた人工心臓ポンプ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005183582A JP4517076B2 (ja) | 2005-06-23 | 2005-06-23 | 動圧軸受を備えた人工心臓ポンプ |
PCT/JP2006/312541 WO2006137496A1 (ja) | 2005-06-23 | 2006-06-22 | 動圧軸受を備えた人工心臓ポンプ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005183582A JP4517076B2 (ja) | 2005-06-23 | 2005-06-23 | 動圧軸受を備えた人工心臓ポンプ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007000350A JP2007000350A (ja) | 2007-01-11 |
JP4517076B2 true JP4517076B2 (ja) | 2010-08-04 |
Family
ID=37570523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005183582A Expired - Fee Related JP4517076B2 (ja) | 2005-06-23 | 2005-06-23 | 動圧軸受を備えた人工心臓ポンプ |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4517076B2 (ja) |
WO (1) | WO2006137496A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9145894B2 (en) | 2011-09-15 | 2015-09-29 | Mitsubishi Heavy Industries, Ltd. | Magnetic coupling pump and pump unit comprising the same |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012024493A1 (en) | 2010-08-20 | 2012-02-23 | Thoratec Corporation | Implantable blood pump |
JP5631236B2 (ja) * | 2011-02-21 | 2014-11-26 | 三菱電機株式会社 | ポンプ及びヒートポンプ装置 |
DE102012200806B4 (de) * | 2012-01-20 | 2014-07-31 | Yasa Motors Poland Sp. z.o.o. | Nassläuferpumpe mit Leistungselektronik |
DE102012200816B4 (de) * | 2012-01-20 | 2015-04-02 | Yasa Motors Poland Sp. z.o.o. | Nassläuferpumpe mit Permanentmagnet |
DE102012200803B4 (de) * | 2012-01-20 | 2015-04-02 | Yasa Motors Poland Sp. z.o.o. | Nassläuferpumpe |
DE102012200807B4 (de) * | 2012-01-20 | 2014-09-25 | Yasa Motors Poland Sp. z.o.o. | Nassläuferpumpe mit Gleitlager |
EP2719403B1 (en) | 2012-10-12 | 2016-09-28 | Abiomed Europe GmbH | Centrifugal blood pump |
CA2911361C (en) | 2013-05-23 | 2020-05-05 | Reinheart Gmbh | Impeller of a centrifugal pump apparatus |
JP2016044674A (ja) | 2014-08-22 | 2016-04-04 | 日本電産株式会社 | 動圧軸受ポンプ |
ES2841198T3 (es) * | 2015-08-04 | 2021-07-07 | Abiomed Europe Gmbh | Cojinete de autolavado |
EP4275737A3 (en) | 2018-01-10 | 2023-12-20 | Tc1 Llc | Bearingless implantable blood pump |
CN110464895B (zh) * | 2019-06-26 | 2022-02-22 | 上海微创心力医疗科技有限公司 | 磁液悬浮式血泵 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0491396A (ja) * | 1990-07-31 | 1992-03-24 | Ntn Corp | ターボ形ポンプ |
US6227817B1 (en) * | 1999-09-03 | 2001-05-08 | Magnetic Moments, Llc | Magnetically-suspended centrifugal blood pump |
JP2002315824A (ja) * | 2001-04-23 | 2002-10-29 | National Institute Of Advanced Industrial & Technology | 人工心臓用回転ポンプ |
JP2002541986A (ja) * | 1999-04-23 | 2002-12-10 | ヴェントラシスト・ピーティワイ・リミテッド | ロータリ血液ポンプ及びその制御装置 |
-
2005
- 2005-06-23 JP JP2005183582A patent/JP4517076B2/ja not_active Expired - Fee Related
-
2006
- 2006-06-22 WO PCT/JP2006/312541 patent/WO2006137496A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0491396A (ja) * | 1990-07-31 | 1992-03-24 | Ntn Corp | ターボ形ポンプ |
JP2002541986A (ja) * | 1999-04-23 | 2002-12-10 | ヴェントラシスト・ピーティワイ・リミテッド | ロータリ血液ポンプ及びその制御装置 |
US6227817B1 (en) * | 1999-09-03 | 2001-05-08 | Magnetic Moments, Llc | Magnetically-suspended centrifugal blood pump |
JP2002315824A (ja) * | 2001-04-23 | 2002-10-29 | National Institute Of Advanced Industrial & Technology | 人工心臓用回転ポンプ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9145894B2 (en) | 2011-09-15 | 2015-09-29 | Mitsubishi Heavy Industries, Ltd. | Magnetic coupling pump and pump unit comprising the same |
Also Published As
Publication number | Publication date |
---|---|
WO2006137496A1 (ja) | 2006-12-28 |
JP2007000350A (ja) | 2007-01-11 |
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