JP7332651B2 - 血液ポンプ及び血液ポンプを動作させる方法 - Google Patents
血液ポンプ及び血液ポンプを動作させる方法 Download PDFInfo
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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
-
- 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
-
- 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
- A61M60/20—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
- A61M60/237—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 axial components, e.g. axial flow 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
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/538—Regulation using real-time blood pump operational parameter data, e.g. motor current
-
- 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
-
- 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
-
- 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
- F04D29/047—Bearings hydrostatic; hydrodynamic
-
- 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
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Mechanical Engineering (AREA)
- Cardiology (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Sliding-Contact Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
種々の実施形態では、通常の動作条件下での総血液ギャップは50マイクロメートルである。種々の実施形態では、通常の動作条件下での総血液ギャップは100マイクロメートルである。種々の実施形態では、通常の動作条件下での総血液ギャップは200マイクロメートルである。種々の実施形態では、通常の動作条件下での総血液ギャップは1000マイクロメートルである。種々の実施形態では、通常の動作条件下での総血液ギャップは2000マイクロメートルである。種々の実施形態では、インペラは、それぞれの血液ギャップを約20%、約30%、約40%、約50%、約60%、約70%、約75%、約80%又は約90%だけ低減するような位置に移動する。
本発明の種々の態様は、ハウジング及びハウジング内のポンプチャンバ内で回転するインペラを含む血液ポンプを動作させる方法であって、インペラをポンプチャンバ内で回転させることであって、インペラがポンプチャンバの第1の端にある第1の軸受、及び、ポンプチャンバの第2の端にある第2の軸受によってポンプチャンバ内で懸垂されることと、インペラをポンプチャンバ内で軸方向に移動させることによって、第1の軸受によって画定される第1の血液ギャップを増大させるとともに第2の軸受によって画定される第2の血液ギャップを低減させることとを含む方法に関する。
本明細書において用いられる場合、「ギャップ」は概して、当業者によって理解されるように、インペラの周りの二次的な流れギャップを指す。一次的な流れは、インペラブレード領域を通る。二次的な流れギャップは、概ねインペラの周りの他の流体のエリアである。幾つかの点で、二次的な流れギャップは、インペラとハウジング壁との間であり、動圧軸受を画定する。
FaΣ=Fhdb+Fpm+Fem
式中、
FaΣは、インペラを浮上させるために組み合わせた力であり、
Fhdbは、入口側軸受、モータ側軸受又は双方からの流体力の組み合わせであり、
Fpmは、永久磁石引力の組み合わせであり、
Femは、モータから生成される磁気的引力である。
種々の実施形態では、通常の動作条件下での総血液ギャップは50マイクロメートルである。種々の実施形態では、通常の動作条件下での総血液ギャップは100マイクロメートルである。種々の実施形態では、通常の動作条件下での総血液ギャップは200マイクロメートルである。種々の実施形態では、通常の動作条件下での総血液ギャップは1000マイクロメートルである。種々の実施形態では、通常の動作条件下での総血液ギャップは2000マイクロメートルである。種々の実施形態では、インペラは、それぞれの血液ギャップを約20%、約30%、約40%、約50%、約60%、約70%、約75%、約80%又は約90%だけ低減するような位置に移動する。
Claims (13)
- 血液ポンプであって、
ハウジング内に配置されるインペラと、
ステータと、
前記ステータに電気的に接続されるコントローラとを備え、
前記コントローラは、
前記インペラの回転の開始前に、前記ステータに供給されるステータコイル磁束電流を調整することで、前記インペラの面が前記ハウジングの第1の内壁と当接する休止位置から、前記インペラが前記ハウジングの内壁から離れた第1の均衡のとれた位置へと、前記インペラを軸方向に移動させ、
前記インペラを前記第1の均衡のとれた位置へと移動させてから、前記ハウジング内で前記インペラを回転させるために、前記ステータにトルク電流を供給し、
前記第1の均衡のとれた位置から第2の均衡のとれた位置へと、前記インペラを軸方向に移動させるとともに、前記インペラの位置を前記第1の均衡のとれた位置と前記第2の均衡のとれた位置との間で交互に変更する、ように構成され、
前記インペラが前記各均衡のとれた位置において費やす時間の量は、それぞれの均衡のとれた位置における前記インペラと前記ハウジングの前記内壁との間のギャップのサイズに反比例する、血液ポンプ。 - 請求項1に記載の血液ポンプにおいて、
前記第1の内壁は、前記ハウジングの入口側を含む、血液ポンプ。 - 請求項1に記載の血液ポンプにおいて、
前記ハウジングの前記第1の内壁及び第2の内壁は、前記インペラに面する動圧溝をそれぞれ形成している、血液ポンプ。 - 請求項1に記載の血液ポンプにおいて、
前記インペラは、1又は複数の動圧溝を形成している、血液ポンプ。 - 請求項1に記載の血液ポンプにおいて、
前記ステータコイル磁束電流は、前記インペラの軸方向の位置を制御する磁力を生成する、血液ポンプ。 - 請求項1に記載の血液ポンプは、更に、
前記インペラの軸方向の位置を監視する1又は複数のセンサを備え、
前記コントローラは、更に、前記1又は複数のセンサによる測定に基づき、前記ステータコイル磁束電流を調整するように構成されている、血液ポンプ。 - 血液ポンプを動作させる方法であって、
前記血液ポンプのコントローラが、前記血液ポンプのインペラの回転の開始前に、前記血液ポンプのステータに供給されるステータコイル磁束電流を調整することで、前記インペラの面が前記血液ポンプのハウジングの第1の内壁と当接する休止位置から、前記インペラが前記ハウジングの内壁から離れた第1の均衡のとれた位置へと、前記インペラを軸方向に移動させることと、
前記コントローラが、前記インペラを前記第1の均衡のとれた位置へと移動させてから、前記ハウジング内で前記インペラを回転させるために、前記ステータにトルク電流を供給することと、
前記コントローラが、前記第1の均衡のとれた位置から第2の均衡のとれた位置へと、前記インペラを軸方向に移動させるとともに、前記インペラの位置を前記第1の均衡のとれた位置と前記第2の均衡のとれた位置との間で交互に変更することと、を含み、
前記インペラが前記各均衡のとれた位置において費やす時間の量は、それぞれの均衡のとれた位置における前記インペラと前記ハウジングの前記内壁との間のギャップのサイズに反比例する、方法。 - 請求項7に記載の血液ポンプを動作させる方法において、
トルク電流及びステータコイル磁束電流は、独立して制御される、方法。 - 請求項7に記載の血液ポンプを動作させる方法において、
前記ステータコイル磁束電流を調整することは、前記コントローラが前記ステータに供給される相電圧の転流角を変更することを含む、方法。 - 請求項7に記載の血液ポンプを動作させる方法において、
前記ハウジングの前記第1の内壁及び第2の内壁は、前記インペラに面する動圧溝をそれぞれ形成している、方法。 - 請求項7に記載の血液ポンプを動作させる方法において、
前記インペラは、1又は複数の動圧溝を形成している、方法。 - 請求項7に記載の血液ポンプを動作させる方法において、
前記ステータコイル磁束電流は、前記インペラの軸方向の位置を制御する磁力を生成する、方法。 - 請求項7に記載の血液ポンプを動作させる方法は、更に、
前記コントローラが、1又は複数のセンサを用いて、前記インペラの軸方向の位置を監視することと、
前記コントローラが、前記1又は複数のセンサによる測定に基づき、前記ステータコイル磁束電流を調整することと
を備える、方法。
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Application Number | Priority Date | Filing Date | Title |
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US201562115318P | 2015-02-12 | 2015-02-12 | |
US62/115,318 | 2015-02-12 | ||
US15/041,987 US10371152B2 (en) | 2015-02-12 | 2016-02-11 | Alternating pump gaps |
US15/041,987 | 2016-02-11 | ||
JP2017542484A JP6863898B2 (ja) | 2015-02-12 | 2016-02-12 | 交互ポンプギャップ |
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JP2017542484A Division JP6863898B2 (ja) | 2015-02-12 | 2016-02-12 | 交互ポンプギャップ |
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JP7332651B2 true JP7332651B2 (ja) | 2023-08-23 |
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JP2021062813A Active JP7332651B2 (ja) | 2015-02-12 | 2021-04-01 | 血液ポンプ及び血液ポンプを動作させる方法 |
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EP (1) | EP3256186B1 (ja) |
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WO2019112825A1 (en) * | 2017-12-05 | 2019-06-13 | Heartware, Inc. | Blood pump with impeller rinse operation |
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US20240052840A1 (en) | 2024-02-15 |
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