JP2011169166A - 遠心式ポンプ装置 - Google Patents
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- 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
- A61M60/104—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body
- A61M60/109—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems
- A61M60/113—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems in other functional devices, e.g. dialysers or heart-lung machines
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- A—HUMAN NECESSITIES
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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
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- 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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
- A61M60/818—Bearings
- A61M60/82—Magnetic bearings
- A61M60/822—Magnetic bearings specially adapted for being actively controlled
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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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- 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
- A61M60/825—Contact bearings, e.g. ball-and-cup or pivot 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
- F04D13/0633—Details of the 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
- F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type
-
- 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
- A61M60/10—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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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、インペラ10の一方面に設けられた永久磁石15a,15bと、血液室7の内壁に設けられ、それぞれ永久磁石15a,15bを吸引する永久磁石16a,16bとを備える。ポンプ動作時にインペラ10の回転中心線L3と血液室7の側壁の中心線L1とが一致するように、永久磁石16a,16bの中心線L2を血液室7の側壁の中心線L1と異なる位置に配置する。したがって、高いトルク伝達効率が得られる。
【選択図】図10
Description
また好ましくは、第1および第2の磁性体の各々は複数の第2の副磁性体を含み、複数の第2の副磁性体の各々は永久磁石であり、インペラの径方向に隣接する複数の第2の副磁性体のN極は同じ方向を向いている。
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29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29において、このポンプ部では、インペラ10のシュラウド12に複数の永久磁石17の代わりに複数(たとえば8個)の永久磁石40が埋設されている。複数の永久磁石40は、等角度間隔で同一の円に沿って配置される。モータ室8内には、複数の永久磁石40を吸引するための複数(たとえば8個)の永久磁石41が設けられている。複数の永久磁石41は、インペラ10の複数の永久磁石40に対向して、等角度間隔で同一の円に沿って配置される。
Claims (16)
- 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部とを備えた遠心式ポンプ装置であって、
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、前記駆動部によって吸引される第3の磁性体を備え、
前記インペラの回転時において、前記第1の磁性体および前記第2の磁性体間に作用する第1の吸引力と前記第3の磁性体および前記駆動部間に作用する第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の室の内壁に第1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第2の動圧溝が形成され、
前記インペラの側面に対向する前記第1の室の側壁は円筒状に形成され、
前記インペラの回転時において前記インペラの回転中心線と前記第1の室の側壁の中心線とが一致するように、前記第2の磁性体の中心線が前記第1の室の側壁の中心線と異なる位置に配置されている、遠心式ポンプ装置。 - 前記第2の磁性体の中心線と前記第1の室の側壁の中心線とが一致する場合、前記インペラの回転時において前記インペラの回転中心線は前記第1の室の側壁の中心線から所定方向に所定距離だけ移動し、
前記第2の磁性体の中心線は、前記第1の室の側壁の中心線から前記所定方向の反対方向に前記所定距離だけ離れた位置に配置されている、請求項1に記載の遠心式ポンプ装置。 - 前記第1の室の側壁の接線方向に延びるように設けられ、前記第1の室の側壁に設けられた開口部から前記ハウジングの外に前記液体を流出させるための筒状の液体流出ポートを備え、
前記第2の磁性体の中心線と前記第1の室の側壁の中心線とが一致する場合、前記インペラの回転時において前記インペラの回転中心線は前記開口部の方向に移動し、
前記第2の磁性体の中心線は、前記第1の室の側壁の中心線から見て前記開口部の反対側に配置されている、請求項1または請求項2に記載の遠心式ポンプ。 - 前記第1の室の側壁の中心線から見て前記開口部の上流側の端部の方向を0度とし、その反対方向を180度とすると、前記第2の磁性体の中心線は135度から225度の間に配置されている、請求項3に記載の遠心式ポンプ装置。
- 前記駆動部は、前記第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み、
前記回転磁界の中心線は前記第1の室の側壁の中心線と一致している、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。 - 前記駆動部は、
前記第3の磁性体に対向して設けられた複数の第4の磁性体と、
それぞれ前記複数の第4の磁性体に巻回され、回転磁界を生成するための複数のコイルを含み、
前記回転磁界の中心線は前記第1の室の側壁の中心線と一致している、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。 - 前記駆動部は、
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み、
前記ロータの中心線は前記第1の室の側壁の中心線と一致している、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1の磁性体および前記第2の磁性体のうちの少なくとも一方の磁性体は、円環状に配列された複数の第1の副磁性体を含む、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1および第2の磁性体の各々は永久磁石であり、
前記複数の第1の副磁性体の各々は永久磁石であり、
前記複数の第1の副磁性体のN極は同じ方向を向いている、請求項8に記載の遠心式ポンプ装置。 - 前記第1の磁性体および前記第2の磁性体のうちの少なくとも一方の磁性体は、互いに径の異なる円環状の複数の第2の副磁性体を含む、請求項1から請求項8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の副磁性体の中心線は一致している、請求項9に記載の遠心式ポンプ装置。
- 前記第1および第2の磁性体の各々は前記複数の第2の副磁性体を含み、
前記複数の第2の副磁性体の各々は永久磁石であり、
前記インペラの径方向に隣接する複数の第2の副磁性体のN極は同じ方向を向いている、請求項10または請求項11に記載の遠心式ポンプ装置。 - 前記第2の磁性体の中心線と前記第1の室の側壁の中心線との間の距離と、前記第1の室内における前記インペラの径方向の可動距離の2分の1の距離との和は、隣接する2つの第2の副磁性体の間隔の2分の1よりも小さい、請求項12に記載の遠心式ポンプ装置。
- 前記第1および第2の磁性体の各々は前記複数の第2の副磁性体を含み、
前記複数の第2の副磁性体の各々は永久磁石であり、
前記インペラの径方向に隣接する2つの第2の副磁性体のN極は異なる方向を向いている、請求項10または請求項11に記載の遠心式ポンプ装置。 - 前記第2の磁性体の中心線と前記第1の室の側壁の中心線との間の距離と、前記第1の室内における前記インペラの径方向の可動距離の2分の1の距離との和は、隣接する2つの第2の副磁性体の間隔よりも小さい、請求項14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、請求項1から請求項15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 |
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JP2010031298A JP5443197B2 (ja) | 2010-02-16 | 2010-02-16 | 遠心式ポンプ装置 |
US13/579,239 US9132215B2 (en) | 2010-02-16 | 2011-01-20 | Centrifugal pump apparatus |
EP11744465.3A EP2538086B1 (en) | 2010-02-16 | 2011-01-20 | Centrifugal pump device |
PCT/JP2011/050925 WO2011102176A1 (ja) | 2010-02-16 | 2011-01-20 | 遠心式ポンプ装置 |
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JP2010031298A JP5443197B2 (ja) | 2010-02-16 | 2010-02-16 | 遠心式ポンプ装置 |
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JP2011169166A true JP2011169166A (ja) | 2011-09-01 |
JP5443197B2 JP5443197B2 (ja) | 2014-03-19 |
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US (1) | US9132215B2 (ja) |
EP (1) | EP2538086B1 (ja) |
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WO (1) | WO2011102176A1 (ja) |
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US10506935B2 (en) | 2015-02-11 | 2019-12-17 | Tc1 Llc | Heart beat identification and pump speed synchronization |
WO2024096029A1 (ja) * | 2022-10-31 | 2024-05-10 | 学校法人東海大学 | 送液装置 |
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EP2292282B1 (en) | 2008-06-23 | 2017-11-15 | Thoratec Corporation | Blood pump apparatus |
WO2010067682A1 (ja) | 2008-12-08 | 2010-06-17 | Ntn株式会社 | 遠心式ポンプ装置 |
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 |
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 |
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2010
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2011
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- 2011-01-20 WO PCT/JP2011/050925 patent/WO2011102176A1/ja active Application Filing
- 2011-01-20 US US13/579,239 patent/US9132215B2/en not_active Expired - Fee Related
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Also Published As
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US20120308363A1 (en) | 2012-12-06 |
EP2538086A1 (en) | 2012-12-26 |
WO2011102176A1 (ja) | 2011-08-25 |
US9132215B2 (en) | 2015-09-15 |
EP2538086B1 (en) | 2016-11-02 |
EP2538086A4 (en) | 2015-04-08 |
JP5443197B2 (ja) | 2014-03-19 |
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