KR20200032241A - 혈관내 혈액 펌프 - Google Patents
혈관내 혈액 펌프 Download PDFInfo
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- KR20200032241A KR20200032241A KR1020207007422A KR20207007422A KR20200032241A KR 20200032241 A KR20200032241 A KR 20200032241A KR 1020207007422 A KR1020207007422 A KR 1020207007422A KR 20207007422 A KR20207007422 A KR 20207007422A KR 20200032241 A KR20200032241 A KR 20200032241A
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- A61M1/1031—
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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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- A61M1/1013—
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- A61M1/1017—
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- A61M1/102—
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- A61M1/122—
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- A61M1/125—
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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
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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
- A61M60/13—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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- 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
- A61M60/135—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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- 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
- A61M60/20—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
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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
- A61M60/408—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable
- A61M60/411—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
- A61M60/416—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted directly by the motor rotor drive shaft
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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
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/827—Sealings between moving parts
- A61M60/829—Sealings between moving parts having a purge fluid supply
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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
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Mechanical Engineering (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Vascular Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transplantation (AREA)
- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sliding-Contact Bearings (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
도 1은 좌심실(left vertricle) 내에 그 유입 캐뉼라(cannular)의 위치를 결정한 상태에서, 좌심실 전에 혈액 펌프를 삽입한 것을 개략적으로 나타낸 도면이다.
도 2는 혈액 펌프의 예시적인 실시예의 개략적인 종단면도이다.
도 3은 도 2의 디테일 III의 확대도이다.
도 4는 도 3의 디테일 III의 변형예이다.
도 5는 도 2의 디테일 IV의 확대도이다.
도 6a 및 6b는 제1 예시적인 실시예에 따른 축방향 슬라이딩 베어링 표면의 평면도 및 전개도이다.
도 7은 제2 예시적인 실시예에 따른 축방향 슬라이딩 베어링 표면의 단면도이다.
도 8은 제 3 예시적인 실시예에 따른 축방향 슬라이딩 베어링 표면의 평면도이다.
Claims (20)
- 혈관내(intravascular) 혈액 펌프(10)로서,
선단부(proximal end) 및 말단부(distal end)를 갖는 모터 하우징(20) 및 상기 모터 하우징 내에 배치된 전기 모터(21)를 구비하는 구동부(11) - 상기 전기 모터는 상기 모터 하우징(20)의 상기 말단부 중의 일단에서 돌출되고 상기 모터 하우징의 상기 선단부 및 상기 말단부 둘 다에서 상기 모터 하우징 내의 방사형 베어링(27) 및 방사형 베어링(31)에 장착되는 모터 샤프트(25)를 포함하되, 상기 모터 하우징(20)의 상기 선단부에서의 상기 모터 샤프트(25)의 상기 방사형 베어링(27) 및/또는 상기 말단부에서의 상기 방사형 베어링(31)은 방사형 슬라이딩 베어링이고, 상기 모터 샤프트(25)는 적어도 하나의 축방향 슬라이딩 베어링(40) 또는 방사형-축방향 슬라이딩 베어링(46)에 의해 축방향으로 상기 모터 하우징(20) 내에 장착됨 - ,
상기 모터 하우징(20)의 상기 선단부에 연결되고 상기 전기 모터로의 전력 공급을 위한 라인(23)이 연장되는 카테터(14), 및
상기 모터 하우징(20)의 상기 말단부에 고정된 튜블러 펌프 하우징(32), 및 상기 모터 하우징의 상기 말단부로부터 돌출되는 상기 모터 샤프트(25)의 단부에 안착되고 상기 펌프 하우징(32) 내에서 회전가능한 임펠러(34)를 구비하는 펌프부(12)를 포함하되,
상기 모터 샤프트는 세라믹으로 이루어지고,
방사형 슬라이딩 베어링(27, 31)으로서 구성된 상기 방사형 베어링 중 적어도 하나에서, 베어링 갭을 형성하는 표면들 중 하나는 상기 모터 샤프트에 의해 형성된 세라믹 표면인
혈관내 혈액 펌프. - 제1항에 있어서, 상기 축방향 슬라이딩 베어링(40) 또는 상기 방사형-축방향 슬라이딩 베어링(46)은 상기 모터 샤프트(25) 상에 배치되고 상기 모터 하우징(20)의 원주 숄더에 대항하여 지지되는 디스크(44)를 포함하는 혈관내 혈액 펌프.
- 제2항에 있어서, 상기 디스크(44)는 세라믹 디스크인 혈관내 혈액 펌프.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 퍼지 유체 라인(29)을 포함하고, 상기 퍼지 유체 라인(29)은 상기 퍼지 유체 라인을 통해 공급되는 유체가 상기 축방향 슬라이딩 베어링(40) 및 상기 모터 하우징의 상기 말단부에 배치된 상기 방사형 베어링(31)의 베어링 갭, 또는 상기 방사형-축방향 슬라이딩 베어링(46)의 베어링 갭을 통해서 흐르도록 배치된 혈관내 혈액 펌프.
- 제1항 내지 제4항 중 어느 한 항에 있어서, 상기 축방향 슬라이딩 베어링(40) 또는 상기 방사형-축방향 슬라이딩 베어링(46)의 상기 베어링 갭을 형성하는 상기 표면들(41, 42) 중 적어도 하나는 방사형의 외측으로부터 방사형의 내측으로 상기 축방향 슬라이딩 베어링(40) 또는 상기 방사형-축방향 슬라이딩 베어링(46)의 상기 베어링 갭을 관통하는 채널(43)을 갖는 혈관내 혈액 펌프.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 축방향 슬라이딩 베어링(40) 또는 상기 방사형-축방향 슬라이딩 베어링(46)의 상기 베어링 갭은 일부 영역에서 원주 방향으로 수렴하는 갭으로 구성된 혈관내 혈액 펌프.
- 제6항에 있어서, 상기 축방향 슬라이딩 베어링(40) 또는 상기 방사형-축방향 슬라이딩 베어링(46)의 상기 베어링 갭을 형성하는 상기 표면들(41, 42)의 이동된 표면(42)은 평탄한 혈관내 혈액 펌프.
- 제1내지 제5항 중 어느 한 항에 있어서, 상기 축방향 슬라이딩 베어링(40) 또는 상기 방사형-축방향 슬라이딩 베어링(46)의 상기 베어링 갭을 형성하는 상기 표면들(41, 42) 중 하나는 하나 이상의 나선형으로 배치된 홈(45)을 갖는 혈관내 혈액 펌프.
- 제8항에 있어서, 상기 축방향 슬라이딩 베어링(40) 또는 상기 방사형-축방향 슬라이딩 베어링(46)의 상기 베어링 갭을 형성하는 표면들(41, 42) 중 이동된 표면(42)은 상기 하나 이상의 나선형으로 배치된 홈을 갖는 혈관내 혈액 펌프.
- 제1항 내지 제9항 중 어느 한 항에 있어서, 상기 세라믹은 지르코늄 산화물(zirconium oxide)인 혈관내 혈액 펌프.
- 제1항 내지 제10항 중 어느 한 항에 있어서, 상기 모터 하우징(20)의 상기 선단부에 배치된 상기 방사형 베어링(27)은 외부 링을 가지며, 상기 전기 모터(21)의 리드 와이어(51)는 상기 외부 링을 통해서 또는 상기 외부 링의 방사형으로 외측에 배치된 슬롯(50) 내로 연장되는 혈관내 혈액 펌프.
- 제11항에 있어서, 상기 전기 모터(21)의 상기 리드 와이어(51) 및 상기 카테터(14)를 따라 연장되는 상기 라인(23)은 상기 모터 하우징의 상기 선단부에 배치된 상기 방사형 베어링(27)의 선단부에 위치하는 표면 상에, 솔더링(52)에 의해 전도성(electro-conductive)으로 접속된 혈관내 혈액 펌프.
- 제12항에 있어서, 상기 모터 하우징은 적어도 부분적으로 주물로 된 플라스틱 하우징이며, 상기 모터 하우징(20)의 상기 선단부에 배치된 상기 방사형 베어링(27)의 선단부에 위치하는 상기 표면 상에 접속되는, 상기 리드 와이어(51) 및 상기 카테터(14)를 따라 연장되는 상기 라인(23)의 상기 전도성 접속(52)이 주조되는 혈관내 혈액 펌프.
- 제1항 내지 제13항 중 어느 한 항에 있어서, 상기 축방향 슬라이딩 베어링(40) 및 상기 방사형-축방향 슬라이딩 베어링(46) 중 적어도 하나의 표면을 포함하는 상기 모터 하우징(20)의 전체 말단부는 하나의 세라믹 부품으로 만들어지는 혈관내 혈액 펌프.
- 제1항 내지 제14항 중 어느 한 항에 있어서, 상기 축방향 슬라이딩 베어링(40) 및 상기 방사형-축방향 슬라이딩 베어링(46) 중 상기 적어도 하나는 상기 모터 하우징(20)의 단부벽(30)의 축방향 내부 표면(41), 및 이에 대향하는 표면(42) - 상기 대향하는 표면(42)은, 회전자(26) 말단의 상기 모터 샤프트(25)에 안착되어 상기 회전자(26)와 함께 회전하는 세라믹 디스크(44)의 일부임 - 에 의해 형성되는 혈관내 혈액 펌프.
- 제1항 내지 제15항 중 어느 한 항에 있어서, 상기 방사형 슬라이딩 베어링(27, 31)으로서 구성된 상기 방사형 베어링 중 상기 적어도 하나에서, 상기 베어링 갭을 형성하는 상기 표면들 중 하나는 상기 모터 하우징(20)의 단부벽(30)에 의해 형성되는 세라믹 표면인 혈관내 혈액 펌프.
- 제1항 내지 제15항 중 어느 한 항에 있어서, 상기 방사형 슬라이딩 베어링(27, 31)으로 구성된 상기 방사형 베어링 중 상기 적어도 하나에서, 상기 베어링 갭을 형성하는 상기 표면들 중 다른 하나는 세라믹 표면인 혈관내 혈액 펌프.
- 제16항에 있어서, 상기 모터 하우징의 단부벽에 의해 형성된 상기 세라믹 표면은 상기 모터 하우징의 말단부 벽에서 스루 보어(through bore)에 의해 형성되는 혈관내 혈액 펌프.
- 제16항 또는 제17항에 있어서, 상기 세라믹 표면은 상기 모터 하우징의 선단부 벽의 통합 부품을 형성하는 베어링 부시에 의해 형성되는 혈관내 혈액 펌프.
- 청구항 4에 따른 상기 혈관내 혈액 펌프 및 37℃에서 점성이 ≥1.2 mPaㆍs인 유체를 상기 퍼지 유체 라인에 공급하기 위한 퍼지 유체 소스를 포함하는 시스템.
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