JP5442598B2 - 遠心回転血液ポンプ - Google Patents
遠心回転血液ポンプ Download PDFInfo
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- JP5442598B2 JP5442598B2 JP2010506303A JP2010506303A JP5442598B2 JP 5442598 B2 JP5442598 B2 JP 5442598B2 JP 2010506303 A JP2010506303 A JP 2010506303A JP 2010506303 A JP2010506303 A JP 2010506303A JP 5442598 B2 JP5442598 B2 JP 5442598B2
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- impeller
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- blood
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- 239000008280 blood Substances 0.000 title claims description 139
- 210000004369 blood Anatomy 0.000 title claims description 139
- 230000005291 magnetic effect Effects 0.000 claims description 76
- 230000036316 preload Effects 0.000 claims description 10
- 239000012530 fluid Substances 0.000 description 29
- 230000002093 peripheral effect Effects 0.000 description 12
- 230000017531 blood circulation Effects 0.000 description 11
- 208000007536 Thrombosis Diseases 0.000 description 10
- 230000002861 ventricular Effects 0.000 description 8
- 206010018910 Haemolysis Diseases 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 230000008588 hemolysis Effects 0.000 description 7
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- 210000000709 aorta Anatomy 0.000 description 5
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- 210000005240 left ventricle Anatomy 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical class [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
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- SJKRCWUQJZIWQB-UHFFFAOYSA-N azane;chromium Chemical compound N.[Cr] SJKRCWUQJZIWQB-UHFFFAOYSA-N 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- 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
-
- 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
-
- 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
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/515—Regulation using real-time patient data
- A61M60/523—Regulation using real-time patient data using blood flow data, e.g. from blood flow transducers
-
- 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
- A61M60/546—Regulation using real-time blood pump operational parameter data, e.g. motor current of blood flow, e.g. by adapting rotor speed
-
- 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
- A61M60/592—Communication of patient or blood pump data to distant operators for treatment purposes
-
- 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
-
- 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
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
- A61M60/857—Implantable blood tubes
-
- 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
- F04D13/0606—Canned motor pumps
- F04D13/064—Details of the magnetic circuit
-
- 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
- F04D29/0473—Bearings hydrostatic; hydrodynamic for radial pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
- Y10S415/90—Rotary blood pump
Description
なお、この明細書の記載には以下の発明が含まれている。
[1].
壁により規定されたポンプ室を有するハウジングと;
上記壁の外表面上に横たわる少なく一つの電磁モータ固定子と;そして、
ポンプ室中にあり、上記壁に関する回転中心軸の周りに回転可能な羽根車と、
を備えていて、
上記羽根車は、上記羽根車が上記回転中心軸の周りに回転している時に、上記ハウジングに対する所定の位置に上記軸と平行な軸方向における協働する一定磁極の磁力を要求することなく、上記羽根車を上記壁に対し上記回転中心軸に沿った位置に拘束するよう適合された流体力学的スラスト軸受表面を有している、
回転血液ポンプ。
[2].
上記回転血液ポンプは、上記一定磁極の軸方向に向かっている磁力を負荷する為に上記ハウジングに対する所定の位置に永久磁石を有している磁気軸受を有していない、前記[1].の回転血液ポンプ。
[3].
上記羽根車は軸方向に向いている中央貫通開口を有している、前記[1].中に請求されている如き回転血液ポンプ。
[4].
上記モータ固定子は横断面が実質的に環形状であり、そして上記羽根車の回転中心軸と同芯である、前記[1].の回転血液ポンプ。
[5].
上記羽根車は円形状の周辺を有していて、その直径は上記環形状の電磁モータ固定子の直径と実質的に同じである、前記[4].の回転血液ポンプ。
[6].
上記壁は上壁と下壁とを含んでいて、上記血液ポンプはさらに上記上壁の外表面上に横たわっている第1モータ固定子と上記下壁の外表面上に横たわっている第2モータ固定子とを備えている、前記[1].の回転血液ポンプ。
[7].
上記第1モータ固定子は上記第2モータ固定子よりも上記羽根車に接近されている、前記[6].の回転血液ポンプ。
[8].
上記モータ固定子の夫々は横断面において実質的に環状であり、そして上記羽根車の回転軸と同芯である、前記[6].の回転血液ポンプ。
[9].
上記羽根車は円形状の周辺を有していて、その直径は上記環状のモータ固定子の夫々の直径と実質的に同じである、前記[8].の回転血液ポンプ。
[10].
上記羽根車の回転軸に対し直線状に配置されている円形状カニューレをさらに備えていて、上記モータ固定子が上記円形状カニューレに対し同芯である、前記[4].の回転血液ポンプ。
[11].
壁により規定されたポンプ室を有するハウジングと;
上記壁の外表面上に横たわる少なく一つの電磁モータ固定子と;そして、
ポンプ室中にある羽根車と、
を備えていて、
上記羽根車は複数の相互に離間した羽根車本体を有し、上記羽根車本体の夫々は不均一な長さの一対の直線状側壁を有していて、個々の羽根車本体の側壁は内方縁から羽根車本体の個々の周縁まで延出していて、上記内方縁は羽根車の回転の方向において周縁の前方にある、
回転血液ポンプ。
[12].
上記側壁の短い方は、羽根車本体進行側表面を規定している、前記[11].中に請求されている如き回転血液ポンプ。
[13].
上記羽根車は、上記羽根車本体の上記内方縁により規定された中心開口を有している、前記[11].中に請求されている如き回転血液ポンプ。
[14].
上記進行側表面はいずれの他の進行側表面に対して垂直ではない、前記[11].の回転血液ポンプ。
[15].
上記進行側表面は上記羽根車本体の側壁のいずれに対しても垂直ではない、前記[11].の回転血液ポンプ。
[16].
血液流路が隣接した羽根車本体の間に形成されていて、いずれの血液流路もいかなる他の血液流路に対し垂直ではない、前記[11].の回転血液ポンプ。
[17].
羽根車本体は上記壁の内表面に隣接して流体力学的スラスト軸受表面をさらに含んでおり、流体力学的スラスト軸受表面は進行側表面から延出しているとともに羽根車が回転している時に上記壁の内表面に対する羽根車の軸方向位置を拘束するよう適用されている、
前記[11].中に請求されている如き回転血液ポンプ。
[18].
羽根車本体が、上記壁の内表面に隣接した実質的に平坦な突起表面をさらに含んでいて、上方の突起表面が流体力学的スラスト軸受表面に対し側方に隣接している、
前記[17].中に請求されている如き回転血液ポンプ。
[19].
モータ固定子は横断面において実質的に環状であり、そして羽根車の回転軸に対し同芯である、前記[11].の回転血液ポンプ。
[20].
上記羽根車は円形状の周辺を有していて、その直径は上記環状の電磁モータ固定子の直径と実質的に同じである、前記[19].の回転血液ポンプ。
[21].
上記壁は上壁及び上記上壁から離れている下壁を含んでいて、羽根車は上記上壁の内表面と上記下壁の内表面との間に配置されていて、そして、上記モータ固定子は上記上壁の外表面上に横たわっている第1モータ固定子と上記下壁の外表面上に横たわっている第2モータ固定子とを含む、前記[19].の回転血液ポンプ。
[22].
磁化された羽根車と電磁モータ固定子により提供され磁力との間の磁気連結が、羽根車が回転している時に羽根車の半径方向位置を拘束する、前記[21].の回転血液ポンプ。
[23].
上記上壁上に横たわっているモータ固定子は、上記下壁上に横たわっているモータ固定子よりも羽根車に接近している、前記[21].の回転血液ポンプ。
[24].
モータ固定子の夫々は横断面において実質的に環状であるとともに、羽根車の回転軸と同芯である、前記[21].の回転血液ポンプ。
[25].
上記羽根車は円形状の周辺を有していて、その直径は上記環状のモータ固定子の夫々の直径と実質的に同じである、前記[24].の回転血液ポンプ。
[26].
羽根車は、生物適合性の磁気的に等方な材料を含む、前記[11].の回転血液ポンプ。
[27].
生物適合性の磁気的に等方な材料は、プラチナ−コバルト合金である、前記[26].の回転血液ポンプ。
[28].
羽根車は有機物重合体により被覆されている、前記[11].の回転血液ポンプ。
[29].
羽根車本体は、内部空洞と上記空洞内に密封されている永久駆動磁石とを有している、前記[11].の回転血液ポンプ。
[30].
羽根車本体は、上表面及び側壁により上表面から離されている下表面を有していて、羽根車本体は上表面に隣接して上方磁極をさらに含んでいる、前記[11].の回転血液ポンプ。
[31].
羽根車本体は、下表面に隣接した下方磁極をさらに含んでいる、前記[30].の回転血液ポンプ。
[32].
電磁モータ固定子と磁極との間の磁気連結が羽根車を回転させる、前記[30].の回転血液ポンプ。
[33].
2個から6個の羽根車本体を備えている、前記[11].の回転血液ポンプ。
Claims (7)
- 前方ケーシング及び後方ケーシングにより規定されたポンプ室を有するハウジングと;
前記前方ケーシングの軸方向を向いている環状外表面上に横たわる少なく一つの電磁モータ固定子と;
ポンプ室中にあり、磁性領域を有している無摩耗性の環状の回転子であって、前記モータ固定子と同芯で同じ直径を有していて、前記回転子を前記後方ケーシングから遠ざけるよう付勢させるとともに前記回転子を回転させるよう前記回転子上に磁気的な予負荷を提供するよう前記モータ固定子と互いに磁気的に結合されており、前記磁性領域が、夫々が前記回転子の内端から個々の周辺へと分岐している不均等な長さの真っ直ぐで垂直な側壁を伴う複数の離間し内方に突出している本体を含んでいる、無摩耗性の環状の回転子と;そして、
個々の突出している本体上にあり、前記回転子が回転している時に、前記ハウジングに対する所定の位置に前記回転子の回転軸と平行な軸方向における協働する一定磁極の磁力を要求することなく、前記前方ケーシングに対する前記回転子の回転軸に沿った前記回転子の位置を拘束するよう適合された流体力学的スラスト軸受表面、
を備えている、回転血液ポンプ。 - 前記回転血液ポンプは、前記一定磁極の軸方向に向かっている磁力を負荷する為に前記ハウジングに対する所定の位置に永久磁石を有している磁気軸受を有していない、請求項1の回転血液ポンプ。
- 前記回転血液ポンプはさらに、前記後方ケーシングの軸方向を向いている環状外表面上に横たわっている第2モータ固定子を備えている、請求項1の回転血液ポンプ。
- 前記少なくとも1つのモータ固定子は前記第2モータ固定子よりも前記回転子の前記磁性領域に接近されている、請求項3の回転血液ポンプ。
- 前記モータ固定子の夫々は横断面において実質的に環状であり、そして前記回転子の回転軸と同芯である、請求項3の回転血液ポンプ。
- 個々のモータ固定子は前記回転子の回転軸と同芯であるとともに同じ円形状の周辺及び同じ直径を有している、請求項5の回転血液ポンプ。
- 前記回転子の回転軸に対し直線状に配置されている円形状カニューレをさらに備えていて、前記モータ固定子及び前記回転子が前記円形状カニューレと同芯である、請求項6の回転血液ポンプ。
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US8152493B2 (en) | 2012-04-10 |
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WO2008136979A1 (en) | 2008-11-13 |
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