JP6861639B2 - 血液ポンプ - Google Patents
血液ポンプ Download PDFInfo
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- JP6861639B2 JP6861639B2 JP2017549270A JP2017549270A JP6861639B2 JP 6861639 B2 JP6861639 B2 JP 6861639B2 JP 2017549270 A JP2017549270 A JP 2017549270A JP 2017549270 A JP2017549270 A JP 2017549270A JP 6861639 B2 JP6861639 B2 JP 6861639B2
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- 239000008280 blood Substances 0.000 title claims description 170
- 210000004369 blood Anatomy 0.000 title claims description 170
- 230000017531 blood circulation Effects 0.000 claims description 50
- 230000007704 transition Effects 0.000 claims description 30
- 239000012530 fluid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000023555 blood coagulation Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 210000000709 aorta Anatomy 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000002169 extracardiac Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 210000001765 aortic valve Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 210000003709 heart valve Anatomy 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
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- A61M60/13—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 by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
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- A61M60/135—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 inside a blood vessel, e.g. using grafting
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- A61M2205/00—General characteristics of the apparatus
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- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
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- Biomedical Technology (AREA)
- Hematology (AREA)
- Mechanical Engineering (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Transplantation (AREA)
- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
Description
回転軸9を中心にして回転可能であるようにして、前記ポンプケーシング2内に配置されたインペラ3であって、通路7に沿って血流入口5から血流出口6まで血液を運搬するようにサイズおよび形状が決められた羽根4を備え、少なくとも1つの軸受10、20によってポンプケーシング2内で回転可能に支持された、インペラ3とを備え、
インペラ3の表面が、インペラ3の前記表面から離間されたポンプケーシング2の表面に隙間31を介して面し、隙間31が隙間遷移点36で通路7と流体接続しており、
少なくとも1つの洗い流しチャネル30が、インペラ3を通って延在すると共に、第1の開口部34を介して通路7と、また第2の開口部35を介して隙間31と流体接続しており、
洗い流しチャネル30の第1の開口部34が、血液ポンプ1の動作中、隙間遷移点36よりも高い圧力下にあって、血流を第1の開口部34から洗い流しチャネル30および隙間31を通って隙間遷移点36に至らせるように、インペラ3の区域に配置される、血液ポンプ1。
Claims (25)
- 通路(7)によって接続された血流入口(5)および血流出口(6)を有するポンプケーシング(2)と、
前記ポンプケーシング(2)と関連付けられているモータ(8)と、
回転軸(9)を中心にして回転可能であるようにして、前記ポンプケーシング(2)内に配置されたインペラ(3)であって、前記通路(7)に沿って前記血流入口(5)から前記血流出口(6)まで血液を運搬するようにサイズおよび形状が決められた羽根(4)を備え、少なくとも1つの軸受(10、20)によって前記ポンプケーシング(2)内で回転可能に支持された、インペラ(3)とを備え、
前記インペラ(3)の表面が、前記インペラ(3)の前記表面から離間された前記ポンプケーシング(2)の表面に隙間(31)を介して面し、前記隙間(31)が前記インペラ(3)の下流の隙間遷移点(36)で前記通路(7)と流体接続しており、
少なくとも1つの洗い流しチャネル(30)が、前記インペラ(3)を通って延在すると共に、第1の開口部(34)を介して前記通路(7)と、また第2の開口部(35)を介して前記隙間(31)と流体接続しており、
前記洗い流しチャネル(30)の前記第1の開口部(34)が、血液ポンプ(1)の動作中、前記隙間遷移点(36)よりも高い圧力下にある前記インペラ(3)の区域に配置されており、血流が前記第1の開口部(34)から前記洗い流しチャネル(30)および前記隙間(31)を通って前記隙間遷移点(36)に至ることを特徴とする血液ポンプ(1)。 - 請求項1に記載の血液ポンプであって、前記洗い流しチャネル(30)の前記第1の開口部(34)が前記インペラ(3)の下流側半分に配設されることを特徴とする血液ポンプ。
- 請求項1または2に記載の血液ポンプであって、前記洗い流しチャネル(30)の前記第1の開口部(34)が、前記血液ポンプ(1)の動作中、前記インペラ(3)が載置される前記通路(7)の長さに沿った圧力分布に対して中間圧力よりも圧力が高い、前記インペラ(3)の区域に配設されることを特徴とする血液ポンプ。
- 請求項1から3のいずれか1項に記載の血液ポンプであって、前記第1の開口部(34)から前記洗い流しチャネル(30)および前記隙間(31)を通って前記隙間遷移点(36)に至る血流が、前記ポンプケーシング(2)の前記血流出口(6)に向かう方向であることを特徴とする血液ポンプ。
- 請求項1から4のいずれか1項に記載の血液ポンプであって、前記インペラ(3)が、前記回転軸(9)に対して径方向外側に延在する下流方向に部分(33)を有し、前記洗い流しチャネル(30)の前記第1の開口部(34)が前記部分(33)に配設されることを特徴とする血液ポンプ。
- 請求項1から5のいずれか1項に記載の血液ポンプであって、前記洗い流しチャネル(30)が、前記第1の開口部(34)から前記洗い流しチャネル(30)を通って前記隙間遷移点(36)に向かって血液を給送する補助ポンプと動作的に関連付けられ、前記補助ポンプが、少なくとも1つの接線方向成分を有する方向に沿って前記インペラ(3)を通って延在する、前記少なくとも1つの洗い流しチャネル(30)によって少なくとも部分的に形成されることを特徴とする血液ポンプ。
- 請求項1から6のいずれか1項に記載の血液ポンプであって、前記洗い流しチャネル(30)が、前記インペラ(3)を通って直線状で延在すると共に、前記洗い流しチャネル(30)が延在する位置が、前記回転軸(9)に対して心ずれしていることを特徴とする血液ポンプ。
- 請求項1から7のいずれか1項に記載の血液ポンプであって、前記洗い流しチャネル(30)が曲線状であり、前記回転軸(9)の周囲を回る方向で前記第1の開口部(34)から延在することを特徴とする血液ポンプ。
- 請求項1から8のいずれか1項に記載の血液ポンプであって、前記洗い流しチャネル(30)が、前記第1の開口部(34)から、前記回転方向とは反対の円周方向で前記インペラ(3)の表面に対してある角度で延在することを特徴とする血液ポンプ。
- 請求項1から9のいずれか1項に記載の血液ポンプであって、前記インペラ(3)が、前記回転軸(9)に沿って延在し、前記軸受(20)を少なくとも部分的に受け入れる中央開口部(32)を備え、前記第2の開口部(35)が前記中央開口部(32)と流体接続していることを特徴とする血液ポンプ。
- 請求項1から10のいずれか1項に記載の血液ポンプであって、前記第2の開口部(35)における前記洗い流しチャネル(30)が、径方向で前記回転軸(9)に向かって向き付けられることを特徴とする血液ポンプ。
- 請求項1から11のいずれか1項に記載の血液ポンプであって、前記洗い流しチャネル(30)の前記第1の開口部(34)が、回転方向に対して前記羽根(4)の順方向側において、前記インペラ(3)の前記羽根(4)の1つに隣接して配設されることを特徴とする血液ポンプ。
- 請求項1から12のいずれか1項に記載の血液ポンプであって、前記第1の開口部(34)の断面が円形または非円形であることを特徴とする血液ポンプ。
- 請求項1から13のいずれか1項に記載の血液ポンプであって、前記第1の開口部(34)が、前記洗い流しチャネル(30)が前記インペラ(3)の表面に対して傾斜していることによって少なくとも部分的に露出した、前記洗い流しチャネル(30)の端部部分によって形成されることを特徴とする血液ポンプ。
- 請求項1から14のいずれか1項に記載の血液ポンプであって、突起(38)が、前記洗い流しチャネル(30)の前記第1の開口部(34)内へと延在し、前記第1の開口部(34)を通って前記洗い流しチャネル(30)に入る血流を増加させるようにサイズおよび形状が決められることを特徴とする血液ポンプ。
- 請求項3に記載の血液ポンプであって、前記圧力が最大圧力であることを特徴とする血液ポンプ。
- 請求項7に記載の血液ポンプであって、前記洗い流しチャネル(30)が、前記回転軸(9)に対して平行な面内で延在することを特徴とする血液ポンプ。
- 請求項9に記載の血液ポンプであって、前記角度が20°未満であることを特徴とする血液ポンプ。
- 請求項9に記載の血液ポンプであって、前記角度が15°未満であることを特徴とする血液ポンプ。
- 請求項9に記載の血液ポンプであって、前記角度が10°未満であることを特徴とする血液ポンプ。
- 請求項11に記載の血液ポンプであって、前記回転軸(9)と前記第1の開口部(34)との間の距離が、前記回転軸(9)と前記隙間遷移点(36)との間の距離の50%未満であることを特徴とする血液ポンプ。
- 請求項11に記載の血液ポンプであって、前記回転軸(9)と前記第1の開口部(34)との間の距離が、前記回転軸(9)と前記隙間遷移点(36)との間の距離の40%未満であることを特徴とする血液ポンプ。
- 請求項11に記載の血液ポンプであって、前記回転軸(9)と前記第1の開口部(34)との間の距離が、前記回転軸(9)と前記隙間遷移点(36)との間の距離の30%未満であることを特徴とする血液ポンプ。
- 請求項1から15のいずれか1項に記載の血液ポンプであって、前記インペラ(3)が、前記インペラから径方向に延在し、前記洗い流しチャネル(30)の前記第1の開口部(34)に隣接して、また回転方向に対して前記第1の開口部の後方に配設された、少なくとも1つのウィング(39)を備えることを特徴とする血液ポンプ。
- 請求項24に記載の血液ポンプであって、前記ウィング(39)が、前記洗い流しチャネル(30)の前記第1の開口部(34)の上を延在し、血液が前記第1の開口部(34)に入ることができるように回転方向で開いていることを特徴とする血液ポンプ。
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JP2022093396A JP7357723B2 (ja) | 2015-03-18 | 2022-06-09 | 血液ポンプ |
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US20240226533A9 (en) | 2024-07-11 |
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