[특허]Radial drive for implantable centrifugal cardiac assist pump

[미국특허] Radial drive for implantable centrifugal cardiac assist pump 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04B-017/02
출원번호	US-0377273 (1989-07-10)
발명자 / 주소	Dorman Frank (Minneapolis MN)
출원인 / 주소	Regents of the University of Minnesota (Minneapolis MN 02)
인용정보	피인용 횟수 : 41 인용 특허 : 0

초록 ▼

A centrifugal pump for left ventricle assist includes a pump housing forming an impeller chamber with inlet and outlet passages and enclosing an impeller rotatable to move blood or other fluids through the impeller chamber, and a rotor chamber enclosing a rotor integral with the impeller and rotatable to drive the impeller. A stator is mounted outside of a rotor casing forming the rotor chamber, concentric with, radially outward of and approximately axially aligned with the rotor. The stator includes a stator frame with an annular back iron and twenty-four teeth equally spaced apart and projected radially inwardly of the back iron. Three wires, one for each of three motor phases, are wound about the back iron, each including four symmetrically arranged active segments toroidally wound about the back iron, corresponding to four poles in a permanent magnet fixed to the rotor. Successive coils are wound in opposite toroidal directions, corresponding to an alternating and opposite arrangement of the poles of the magnet.

대표청구항 ▼

An apparatus for driving a body implantable centrifugal pump, including: a dielectric casing defining a rotor chamber, an impeller chamber, bodily fluid inlet and outlet passages in fluid communication with said impeller chamber and the exterior of said casing, and a lubricant fluid inlet passage in fluid communication with said rotor chamber and said exterior; a rotor assembly contained in said rotor chamber and supported to rotate relative to the casing by hydrodynamic bearing action of a fluid lubricant provided through said lubricant inlet passage, said rotor assembly including a permanent magnet having an equal number of N-magnetic and S-magnetic poles in an alternating configuration with opposite poles adjacent one another; a stator mounted to the exterior of said casing in surrounding, radially spaced apart relation to said rotor assembly, said stator including an annular stator frame fixed to the casing and coaxial with the rotor to provide a predetermined radial gap between the stator frame and rotor assembly, said stator frame constructed of a magnetic flux carrying material and including an annular outer rim having a diameter greater than its axial length; said stator further including at least two electrical conductors disposed along said outer rim and electrically isolated from one another, each of said conductors including a plurality of active segments disposed symmetrically about the outer rim, each active segment including a plurality of traverses of the associated conductor toroidally around said rim; a drive means including an electrical power supply, for providing an electrical current to said conductors in a predetermined sequence to rotate the rotor assembly relative to said casing and said stator; and an impeller contained in said impeller chamber, and a connecting means for coupling said impeller to rotate responsive to rotation of the rotor.

이 특허를 인용한 특허 (41) 인용/피인용 타임라인 분석

Imagawa, Takahito; Miyamura, Atsunori, Angular oscillation centrifugal pump.
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Virr, Alexander; Smith, Ian Malcolm; Dantanarayana, Muditha Pradeep; Clark, Stanley; Wickham, Peter John Deacon, Apparatus for supplying breathable gas.
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Ritz, Jr., Edward Failing; Bales, John E.; Long, Tommy; Saunders, J. Lynn; Nelke, Ray; Sabri, Mohamed, Axial flux permanent magnet machines.
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Bales, John E.; Long, Tom; Saunders, J. Lynn; Sabri, Mohamed, Brushless electro-mechanical device.
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Bales, John E., Brushless electro-mechanical machine.
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Miles, Scott D.; Beck, Kent F.; Nieman, Timothy R., Cannulation apparatus and method.
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Hong, Soon Il; Lee, Seung Yong; Park, Yong Sun; Kim, Gyuhwan; Kim, Yun Seok; Oh, Tae-Sung; Kim, Kyung-Hwan; Lee, Jong-Hoon; Lee, Kwang-Ho, Electric water pump.
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Yi, Jeawoong; Lee, Seung Yong; Kim, Gyuhwan; Kim, Yun Seok; Park, Yong Sun; Oh, Tae-Sung; Kim, Kyung-Hwan; Lee, Jong-Hoon; Lee, Kwang-Ho, Electric water pump.
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Yi, Jeawoong; Lee, Seung Yong; Kim, Gyuhwan; Kim, Yun Seok; Park, Yong Sun; Oh, Tae-Sung; Kim, Kyung-Hwan; Lee, Jong-Hoon; Lee, Kwang-Ho, Electric water pump.
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Yi, Jeawoong; Lee, Seung Yong; Kim, Gyuhwan; Kim, Yun Seok; Park, Yong Sun; Oh, Tae-Sung; Kim, Kyung-Hwan; Lee, Jong-Hoon; Lee, Kwang-Ho, Electric water pump.
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Yi, Jeawoong; Lee, Seung Yong; Kim, Gyuhwan; Kim, Yun Seok; Park, Yong Sun; Oh, Tae-Sung; Kim, Kyung-Hwan; Lee, Jong-Hoon; Lee, Kwang-Ho, Electric water pump.
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Khanwilkar Pratap S. ; Allaire Paul E. ; Bearnson Gill Brent ; Olsen Don B. ; Maslen Eric H. ; Long James W., Electromagnetically suspended and rotated centrifugal pumping apparatus and method.
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Brown, Robert G., Extrapolation of back EMF signals in brushless DC motors.
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Aboul-Hosn, Walid N.; Kanz, William R.; Baker, Bruce A., Guidable intravascular blood pump and related methods.
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Khanwilkar Pratap S. ; Allaire Paul E. ; Bearnson Gill Brent ; Olsen Don B. ; Maslen Eric H. ; Long James W., Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method.
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Khanwilkar, Pratap S.; Allaire, Paul E.; Bearnson, Gill B.; Olsen, Don B.; Maslen, Eric H.; Long, James W., Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method.
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Makinson, Ian Douglas; Potharaju, Subbarao; Dickinson, Philip John, Impeller.
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Allarie,Paul E.; Bearnson,Gill B.; Flack,Ron; Khanwilkar,Pratap S.; Kumar,B. Ajit; Long, Jr.,James W.; Olsen,Don B.; Decker,Jeffrey; Baloh,Michael, Implantable centrifugal blood pump with hybrid magnetic bearings.
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Benkowski, Robert J.; Lynch, Bryan E.; Morello, Gino F.; Winstrom, William L., Implantable pump system.
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Lopatinsky,Edward L.; Shaefer,Dan K.; Rosenfeld,Saveliy T.; Fedoseyev,Lev A., Integrated motorized pump.
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Antaki,James F.; Ludlow,Jed C.; Miles,Scott D., Low profile inlet for an implantable blood pump.
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Estrada, Jesus; Patel, Akshaykumar, Method and means for detecting motor rotation.
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Zafirelis, Zafiris G.; Marous, III, John C.; Yu, Yih-Choung; Lehmann, Kirk A.; Johnson, Greg A., Method and system for closed chest blood flow support.
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Zafirelis, Zafiris G.; Yu, Yih-Choung; Marous, III, John C.; Lehmann, Kirk A.; Johnson, Gregory A., Method and system for closed chest blood flow support.
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Paden, Brad E.; Ludlow, Jed C.; Bearnson, Gill B., Method and system for positioning a movable body in a magnetic bearing system.
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Yi, Jeawoong; Lee, Seung Yong; Kim, Gyuhwan; Kim, Yun Seok; Park, Yong Sun; Oh, Tae-Sung; Kim, Kyung-Hwan; Lee, Jong-Hoon; Lee, Kwang-Ho, Method for manufacturing stator for electric water pump.
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Makinson,Ian Douglas; Potharaju,Subbarao; Dickinson,Philip John, Method of manufacturing an impeller.
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Magovern, James A.; Allison, Scott B.; Barraclough, Royce G.; Revenaugh, James R.; Smith, Douglas E.; Wang, David H. J., Percutaneous right ventricular assist apparatus and method.
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Magovern, James A.; Allison, Scott B.; Barraclough, Royce G.; Revenaugh, James R.; Smith, Douglas E.; Wang, David H. J., Percutaneous right ventricular assist apparatus and method.
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Pate, Thomas D.; Longoria, Raul G.; Smalling, Richard; Gohean, Jeffrey R., Positive displacement pump system and method.
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Gill B. Bearnson ; Pratap S. Khanwilkar ; James W. Long ; Jed C. Ludlow ; Brad E. Paden ; Chen Chen ; Dave B. Paden ; Don B. Olsen ; James Antaki ; Paul E. Allaire ; Michael Baloh, Pump having a magnetically suspended rotor with one active control axis.
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Smith, Douglas E.; Wivholm, Jennifer; Svitek, Robert G.; Cortese, Cory J.; Bollinger, Robert; Garippa, Michael, Pumping system and method for assisting a patient's heart.
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Smith, Douglas E.; Wivholm, Jennifer; Svitek, Robert G.; Cortese, Cory J.; Bollinger, Robert; Garippa, Michael, Pumping system and method for assisting a patient's heart.
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Smith, Douglas E.; Wivholm, Jennifer; Svitek, Robert G.; Cortese, Cory J.; Bollinger, Robert; Garippa, Michael, Pumping system and method for assisting a patient's heart.
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Smith, Douglas E.; Wivholm, Jennifer; Svitek, Robert G.; Cortese, Cory J.; Bollinger, Robert; Garippa, Michael, Pumping system and method for assisting a patient's heart.
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Kjaer, Oluf; Hoj, Finn Mathiesen; Grann, Helge; Iversen, Kare, Rotor for a canned motor.
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Aboul Hosn,Walid Najib, Single port cardiac support apparatus.
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Aboul-Hosn Walid N., Single port cardiac support apparatus.
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Aboul-Hosn, Walid Najib, Single port cardiac support apparatus.
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Noble,Ernest John; Howell,David James, Stator for a dynamoelectric machine having a split ferromagnetic core.
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Aboul-Hosn, Walid N, Transport pump and organ stabilization apparatus including related methods.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Radial drive for implantable centrifugal cardiac assist pump 원문보기