JP2010203398A - 遠心式ポンプ装置 - Google Patents
遠心式ポンプ装置 Download PDFInfo
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- 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
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
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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
- A61M60/818—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
- F04D13/0666—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
- F04D29/046—Bearings
- F04D29/047—Bearings hydrostatic; hydrodynamic
- F04D29/0473—Bearings hydrostatic; hydrodynamic for radial pumps
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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
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/045—Sliding-contact bearings for exclusively rotary movement for axial load only with grooves in the bearing surface to generate hydrodynamic pressure, e.g. spiral groove thrust bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
- F16C32/0692—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for axial load only
-
- 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
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/419—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Heart & Thoracic Surgery (AREA)
- General Engineering & Computer Science (AREA)
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- Structures Of Non-Positive Displacement Pumps (AREA)
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Abstract
【解決手段】この遠心式血液ポンプ装置は、血液室7内に設けられたインペラ10と、それぞれインペラ10の一方面および他方面に設けられた永久磁石15,17と、血液室7の内壁に設けられた永久磁石16と、隔壁6を介してインペラ10を回転駆動させる磁性体18およびコイル20とを備える。インペラ10に対向する隔壁6に形状および深さが異なる動圧溝21,22を形成し、インペラ10に対向する血液室7の内壁に形状および深さが異なる動圧溝23,24を形成する。動圧溝22,24はインペラ10の回転起動時に大きな動圧力を発生し、動圧溝21,23はインペラ10の定常回転時に大きな動圧力を発生する。
【選択図】図3
Description
図1および図2に示すように、実施の形態1による遠心式血液ポンプ装置のポンプ部1は、非磁性材料で形成されたハウジング2を備える。ハウジング2は、円柱状の本体部3と、本体部3の一方の端面の中央に立設された円筒状の血液流入ポート4と、本体部3の外周面に設けられた円筒状の血液流出ポート5とを含む。血液流出ポート5は、本体部3の外周面の接線方向に延在している。
図26は、この発明の実施の形態2による遠心式血液ポンプ装置のポンプ部の構成を示す断面図であって、図3と対比される図である。図26において、このポンプ部では、インペラ10のシュラウド11に永久磁石40,41が埋設されている。永久磁石40は永久磁石41よりもインペラ10の回転軸側に設けられている。また、シュラウド11に対向する血液室7の内壁には、それぞれ永久磁石40,41を吸引する永久磁石42,43が埋設されている。永久磁石40〜43は、インペラ10をモータ室8と反対側、換言すれば血液流入ポート4側に吸引(換言すれば、付勢)するために設けられている。
Claims (11)
- 隔壁で仕切られた第1および第2の室を含むハウジングと、前記第1の室内において前記隔壁に沿って回転可能に設けられ、回転時の遠心力によって液体を送るインペラと、前記第2の室内に設けられ、前記隔壁を介して前記インペラを回転駆動させる駆動手段とを備えた遠心式ポンプ装置において、
前記インペラの一方面に設けられた第1の磁性体と、
前記インペラの一方面に対向する前記第1の室の内壁に設けられ、前記第1の磁性体を吸引する第2の磁性体と、
前記インペラの他方面に設けられ、前記駆動手段によって吸引される第3の磁性体とを備え、
前記インペラの回転中において、前記第1および第2の磁性体間の第1の吸引力と前記第3の磁性体および前記駆動手段間の第2の吸引力とは、前記第1の室内における前記インペラの可動範囲の略中央で釣り合い、
前記インペラの一方面またはそれに対向する前記第1の室の内壁に複数の第1の動圧溝および複数の第2の動圧溝が形成され、前記インペラの他方面またはそれに対向する前記隔壁に複数の第3の動圧溝および複数の第4の動圧溝が形成され、
前記第2の動圧溝の形状および深さのうちの少なくとも一方は前記第1の動圧溝と異なり、前記第4の動圧溝の形状および深さのうちの少なくとも一方は前記第3の動圧溝と異なることを特徴とする、遠心式ポンプ装置。 - 前記複数の第1の動圧溝は前記インペラの定常回転時に前記複数の第2の動圧溝よりも大きな動圧力を発生し、
前記複数の第2の動圧溝は前記インペラの回転起動時に前記複数の第2の動圧溝よりも大きな動圧力を発生し、
前記複数の第3の動圧溝は前記インペラの定常回転時に前記複数の第4の動圧溝よりも大きな動圧力を発生し、
前記複数の第4の動圧溝は前記インペラの回転起動時に前記複数の第3の動圧溝よりも大きな動圧力を発生することを特徴とする、請求項1に記載の遠心式ポンプ装置。 - 前記第2の動圧溝は前記第1の動圧溝よりも浅く、前記第4の動圧溝は前記第3の動圧溝よりも浅いことを特徴とする、請求項1または請求項2に記載の遠心式ポンプ装置。
- 前記第2の動圧溝の深さは前記第1の動圧溝の深さの5分の1以下であり、前記第4の動圧溝の深さは前記第3の動圧溝の深さの5分の1以下であることを特徴とする、請求項3に記載の遠心式ポンプ装置。
- 各第2の動圧溝は2つの第1の動圧溝の間に配置され、各第4の動圧溝は2つの第3の動圧溝の間に配置され、
各第2の動圧溝の幅は前記2つの第1の動圧溝の間隔の3分の2以下であり、各第4の動圧溝の幅は前記2つの第3の動圧溝の間隔の3分の2以下であることを特徴とする、請求項1から請求項4までのいずれかに記載の遠心式ポンプ装置。 - 前記第2の動圧溝の数は前記第1の動圧溝の数以下であり、前記第4の動圧溝の数は前記第2の動圧溝の数以下であることを特徴とする、請求項1から請求項5までのいずれかに記載の遠心式ポンプ装置。
- 前記複数の第2の動圧溝は前記インペラの回転方向に等角度間隔で配置され、前記複数の第4の動圧溝は前記インペラの回転方向に等角度間隔で配置されていることを特徴とする、請求項6に記載の遠心式ポンプ装置。
- 前記第3の磁性体は複数設けられ、
複数の前記第3の磁性体は、隣接する磁極が互いに異なるように同一の円に沿って配置され、
前記駆動手段は、前記複数の第3の磁性体に対向して設けられ、回転磁界を生成するための複数のコイルを含むことを特徴とする、請求項1から請求項7までのいずれかに記載の遠心式ポンプ装置。 - 前記第3の磁性体は複数設けられ、
複数の前記第3の磁性体は、隣接する磁極が互いに異なるように同一の円に沿って配置され、
前記駆動手段は、
前記複数の第3の磁性体に対向して配置された複数の第4の磁性体と、
それぞれ前記複数の第4の磁性体に対応して設けられて各々が対応の第4の磁性体に巻回され、回転磁界を生成するための複数のコイルとを含むことを特徴とする、請求項1から請求項7までのいずれかに記載の遠心式ポンプ装置。 - 前記駆動手段は、
前記第2の室内において前記隔壁に沿って回転可能に設けられたロータと、
前記第3の磁性体に対向して前記ロータに設けられ、前記第3の磁性体を吸引する第4の磁性体と、
前記ロータを回転させるモータとを含むことを特徴とする、請求項1から請求項7までのいずれかに記載の遠心式ポンプ装置。 - 前記液体は血液であり、
前記遠心式ポンプ装置は、前記血液を循環させるために使用されることを特徴とする、請求項1から請求項10までのいずれかに記載の遠心式ポンプ装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009052176A JP5378010B2 (ja) | 2009-03-05 | 2009-03-05 | 遠心式ポンプ装置 |
EP10748677.1A EP2405141B1 (en) | 2009-03-05 | 2010-02-26 | Centrifugal pump device |
PCT/JP2010/053069 WO2010101082A1 (ja) | 2009-03-05 | 2010-02-26 | 遠心式ポンプ装置 |
US13/254,597 US9381285B2 (en) | 2009-03-05 | 2010-02-26 | Centrifugal pump apparatus |
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JP2009052176A JP5378010B2 (ja) | 2009-03-05 | 2009-03-05 | 遠心式ポンプ装置 |
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JP2010203398A true JP2010203398A (ja) | 2010-09-16 |
JP5378010B2 JP5378010B2 (ja) | 2013-12-25 |
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JP2009052176A Expired - Fee Related JP5378010B2 (ja) | 2009-03-05 | 2009-03-05 | 遠心式ポンプ装置 |
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US (1) | US9381285B2 (ja) |
EP (1) | EP2405141B1 (ja) |
JP (1) | JP5378010B2 (ja) |
WO (1) | WO2010101082A1 (ja) |
Cited By (11)
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US9556873B2 (en) | 2013-02-27 | 2017-01-31 | Tc1 Llc | Startup sequence for centrifugal pump with levitated impeller |
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US10052420B2 (en) | 2013-04-30 | 2018-08-21 | Tc1 Llc | Heart beat identification and pump speed synchronization |
US10117983B2 (en) | 2015-11-16 | 2018-11-06 | Tc1 Llc | Pressure/flow characteristic modification of a centrifugal pump in a ventricular assist device |
US10166318B2 (en) | 2015-02-12 | 2019-01-01 | Tc1 Llc | System and method for controlling the position of a levitated rotor |
US10245361B2 (en) | 2015-02-13 | 2019-04-02 | Tc1 Llc | Impeller suspension mechanism for heart pump |
JP2019058442A (ja) * | 2017-09-27 | 2019-04-18 | テルモ株式会社 | ポンプ装置 |
US10371152B2 (en) | 2015-02-12 | 2019-08-06 | Tc1 Llc | Alternating pump gaps |
US10506935B2 (en) | 2015-02-11 | 2019-12-17 | Tc1 Llc | Heart beat identification and pump speed synchronization |
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WO2009157408A1 (ja) | 2008-06-23 | 2009-12-30 | テルモ株式会社 | 血液ポンプ装置 |
CN102239334B (zh) | 2008-12-08 | 2015-03-04 | 胸腔科技有限公司 | 离心式泵装置 |
JP5378010B2 (ja) | 2009-03-05 | 2013-12-25 | ソラテック コーポレーション | 遠心式ポンプ装置 |
EP2405140B1 (en) | 2009-03-06 | 2016-10-19 | Thoratec Corporation | Centrifugal pump device |
JP5443197B2 (ja) | 2010-02-16 | 2014-03-19 | ソラテック コーポレーション | 遠心式ポンプ装置 |
WO2011118325A1 (ja) | 2010-03-26 | 2011-09-29 | テルモ株式会社 | 遠心式血液ポンプ装置 |
JP5681403B2 (ja) | 2010-07-12 | 2015-03-11 | ソーラテック コーポレイション | 遠心式ポンプ装置 |
JP5577506B2 (ja) * | 2010-09-14 | 2014-08-27 | ソーラテック コーポレイション | 遠心式ポンプ装置 |
US9801702B2 (en) * | 2010-12-16 | 2017-10-31 | Boston Scientific Scimed, Inc. | Artificial sphincter system and method |
EP2785392B1 (en) | 2011-12-03 | 2017-04-12 | Indiana University Research and Technology Corporation | Cavopulmonary viscous impeller assist device and method |
JP6083929B2 (ja) | 2012-01-18 | 2017-02-22 | ソーラテック コーポレイション | 遠心式ポンプ装置 |
WO2014036410A1 (en) | 2012-08-31 | 2014-03-06 | Thoratec Corporation | Start-up algorithm for an implantable blood pump |
US9371826B2 (en) | 2013-01-24 | 2016-06-21 | Thoratec Corporation | Impeller position compensation using field oriented control |
US9713663B2 (en) | 2013-04-30 | 2017-07-25 | Tc1 Llc | Cardiac pump with speed adapted for ventricle unloading |
JP6117658B2 (ja) * | 2013-09-06 | 2017-04-19 | 本田技研工業株式会社 | 遠心ポンプ |
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Also Published As
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US9381285B2 (en) | 2016-07-05 |
JP5378010B2 (ja) | 2013-12-25 |
WO2010101082A1 (ja) | 2010-09-10 |
EP2405141B1 (en) | 2014-04-09 |
US20120003108A1 (en) | 2012-01-05 |
EP2405141A1 (en) | 2012-01-11 |
EP2405141A4 (en) | 2012-12-19 |
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