JP2007000350A - 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
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- JP2007000350A JP2007000350A JP2005183582A JP2005183582A JP2007000350A JP 2007000350 A JP2007000350 A JP 2007000350A JP 2005183582 A JP2005183582 A JP 2005183582A JP 2005183582 A JP2005183582 A JP 2005183582A JP 2007000350 A JP2007000350 A JP 2007000350A
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- impeller
- dynamic pressure
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- bearing
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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
- F04D29/047—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
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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
-
- 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
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- 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)
Abstract
【課題】 人工心臓ポンプのインペラ動圧軸受の間隙を流れる作動流体としての血液をインペラの吐出側から再循環させず、またスラスト動圧軸受を1つだけで支持する。
【解決手段】 インペラ5はインペラ本体8とインペラ軸受部材9とからなり、円筒面7に沿って永久磁石21を配置し、下面には放射状にベーン6を設ける。内側ケーシング4にはケーシング軸受部材17を設け、インペラ軸受部材17の上方円筒部11の外周面13とケーシング軸受部材17の円筒状内周面18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、インペラ軸受部材17の上面15とケーシング軸受部材17の下端面19のいずれかに動圧溝を備えたスラスト動圧軸受を形成する。それらの動圧溝により作動流体をインペラ入口から導き、インペラ吐出側に排出する。インペラ回転時にはインペラ5が持ち上げられ、そのスラスト力は上方に配置したスラスト動圧軸受のみで受ける。
【選択図】 図1
Description
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 (6)
- 上方中心部に流入口を形成し、下方円筒部外周面に沿って複数の極をもつ永久磁石を配置し、下面側に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を備え、上方に突出する上方円筒部を備えたインペラを、前記インペラの下方円筒部外周面に対向する円筒状内周面に複数の電磁石を配置したケーシング内に回転且つ上下動自在に設け、
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するとともに、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動圧軸受を備えた人工心臓ポンプ。 - 前記インペラの流入口の流体を、前記各動圧溝の作用により各動圧溝に導き、ベーンの流体吐出側に流出させた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。
- 前記ベーン内の永久磁石の配置位置を、前記ケーシング内の電磁石の配置位置より、少なくともインペラの非回転時には下方に配置した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。
- 前記インペラは、内部に前記永久磁石を備え下面側に前記ベーンを備えるインペラ本体と、前記上方円筒部と前記インペラ本体の上部に位置する円板部とからなるインペラ軸受部材とから構成し、
前記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、前記円板部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、前記インペラの上方円筒部外周面に対向する内周面と、前記インペラ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 true JP2007000350A (ja) | 2007-01-11 |
JP4517076B2 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 (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012172565A (ja) * | 2011-02-21 | 2012-09-10 | Mitsubishi Electric Corp | ポンプ及びヒートポンプ装置 |
JP2015532146A (ja) * | 2012-10-12 | 2015-11-09 | アビオメド オイローパ ゲーエムベーハー | 遠心血液ポンプ |
US9879691B2 (en) | 2014-08-22 | 2018-01-30 | Nidec Corporation | Dynamic pressure bearing pump |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012024493A1 (en) | 2010-08-20 | 2012-02-23 | Thoratec Corporation | Implantable blood pump |
JP4875783B1 (ja) | 2011-09-15 | 2012-02-15 | 三菱重工業株式会社 | 磁気カップリングポンプ及びこれを備えているポンプユニット |
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 |
DE102012200816B4 (de) * | 2012-01-20 | 2015-04-02 | Yasa Motors Poland Sp. z.o.o. | Nassläuferpumpe mit Permanentmagnet |
DE102012200806B4 (de) * | 2012-01-20 | 2014-07-31 | Yasa Motors Poland Sp. z.o.o. | Nassläuferpumpe mit Leistungselektronik |
CN105324139B (zh) * | 2013-05-23 | 2018-01-26 | 纯净之心有限公司 | 离心泵装置的叶轮 |
EP3808404A1 (en) | 2015-08-04 | 2021-04-21 | Abiomed Europe GmbH | Self-flushing bearing |
US10973967B2 (en) | 2018-01-10 | 2021-04-13 | Tc1 Llc | Bearingless implantable blood pump |
CN110075377B (zh) * | 2019-06-26 | 2019-10-08 | 上海微创医疗器械(集团)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 (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012172565A (ja) * | 2011-02-21 | 2012-09-10 | Mitsubishi Electric Corp | ポンプ及びヒートポンプ装置 |
JP2015532146A (ja) * | 2012-10-12 | 2015-11-09 | アビオメド オイローパ ゲーエムベーハー | 遠心血液ポンプ |
JP2017164503A (ja) * | 2012-10-12 | 2017-09-21 | アビオメド オイローパ ゲーエムベーハー | 遠心血液ポンプ |
US11092158B2 (en) | 2012-10-12 | 2021-08-17 | Abiomed Europe Gmbh | Centrifugal blood pump with hydrodynamic bearing |
US9879691B2 (en) | 2014-08-22 | 2018-01-30 | Nidec Corporation | Dynamic pressure bearing pump |
Also Published As
Publication number | Publication date |
---|---|
WO2006137496A1 (ja) | 2006-12-28 |
JP4517076B2 (ja) | 2010-08-04 |
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