[특허]Rotary blood pump

Rotary blood pump 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-001/10 F04D-029/047 F04D-029/041 F04D-029/048
출원번호	US-0739814 (2013-01-11)
등록번호	US-9512852 (2016-12-06)
발명자 / 주소	Wampler, Richard K. Lancisi, David M.
출원인 / 주소	Thoratec Corporation
대리인 / 주소	Inskeep IP Group, Inc.
인용정보	피인용 횟수 : 0 인용 특허 : 213

초록 ▼

The present invention provides a rotary blood pump with both an attractive magnetic axial bearing and a hydrodynamic bearing. In one embodiment according to the present invention, a rotary pump includes an impeller assembly supported within a pump housing assembly by a magnetic axial bearing and a hydrodynamic bearing. The magnetic axial bearing includes at least two magnets oriented to attract each other. One magnet is positioned in the spindle of the pump housing while the other is disposed within the rotor assembly, proximate to the spindle. In this respect, the two magnets create an attractive axial force that at least partially maintains the relative axial position of the rotor assembly. The hydrodynamic bearing is formed between sloping surfaces that form tight clearances below the rotor assembly.

대표청구항 ▼

1. A blood pump comprising: a pump housing defining a pump chamber having an inlet and an outlet;a rotor rotatably disposed in said pump chamber;a plurality of lifts positioned between said pump housing and said rotor to create a hydrodynamic bearing surface; each of said plurality of lifts being elongated and sloped at an angle relative to a pump chamber surface such that each of said plurality of lifts includes a first planar surface extending at an angle relative to a pump chamber surface and a second planar surface, connected to said first surface, extending substantially parallel to said pump chamber surface; and,a passive axial magnetic bearing supporting said rotor comprised of a pump housing magnet and a corresponding rotor magnet wherein magnetic fields of said pump housing magnet and said corresponding rotor magnet are oppositely aligned in the axial direction;said plurality of lifts and said passive axial magnetic bearing sized to cooperate with each other so as to enhance axial stability to said rotor during rotation of said rotor. 2. A blood pump according to claim 1, wherein, said first surface is angled from said pump chamber surface between about 0.5 degrees and about 3 degrees. 3. A blood pump according to claim 1, wherein said each of said plurality of lifts is disposed on said rotor. 4. A blood pump according to claim 1, wherein each of said plurality of lifts is disposed on said pump chamber surface. 5. A blood pump according to claim 4, wherein each of said plurality of lifts is formed integrally on said pump chamber surface. 6. A blood pump according to claim 1, wherein said plurality of lifts is comprised of at least three lifts. 7. A blood pump according to claim 1, wherein said plurality of lifts constitutes a cumulative total area within a range of about 40% to 90% of said pump chamber surface area. 8. A blood pump according to claim 1, wherein the plurality of lifts are sized to produce an amount of force adequate to compensate for the sum of the net hydrodynamic/hydrostatic forces of said pump plus an attractive force between a motor magnet and back iron of said pump. 9. A blood pump according to claim 1, wherein said plurality of lifts are sized and shaped to produce a hydrodynamic bearing when a clearance between said pump housing and said rotor is within a range of about 0.0002 inches to 0.001 inches. 10. A blood pump according to claim 8, wherein said compensatory force produced by said plurality of lifts equals at least around 1.302 pounds. 11. A blood pump according to claim 1, wherein said pump housing magnet and said rotor magnet are positionally offset from each other in an axial direction. 12. A blood pump comprising: a housing assembly defining an interior pump surface;a rotor rotatably disposed in said housing assembly;a plurality of lifts positioned between said housing assembly and said rotor to create a hydrodynamic bearing surface;each of said plurality of lifts comprised of an elongated sloping surface such that each of said plurality of lifts includes a first planar surface extending at an angle relative to a pump chamber surface and a second planar surface, connected to said first surface, extending substantially parallel to said pump chamber surface, anda passive axial magnetic bearing supporting said rotor comprised of a housing magnet and a corresponding rotor magnet wherein magnetic fields of said housing magnet and said corresponding rotor magnet are oppositely aligned in the axial directionsaid plurality of lifts and said passive axial magnetic bearing sized to cooperate with each other so as to enhance axial stability to said rotor during rotation of said rotor. 13. A blood pump according to claim 12, wherein said first surface is angled from said interior pump surface between about 0.5 degrees and about 3 degrees. 14. A blood pump according to claim 12, wherein said each of said plurality of lifts is disposed on said rotor. 15. A blood pump according to claim 12, wherein each of said plurality of lifts is disposed on said interior pump surface. 16. A blood pump according to claim 15, wherein each of said plurality of lifts is formed integrally on said interior pump surface. 17. A blood pump according to claim 12, wherein said plurality of lifts is comprised of at least three lifts. 18. A blood pump according to claim 12, wherein said plurality of lifts constitutes a cumulative total area within a range of about 40% to 90% of said interior pump surface area. 19. A blood pump according to claim 12, wherein the plurality of lifts are sized to produce an amount of force adequate to compensate for the sum of the net hydrodynamic/hydrostatic forces of said pump plus an attractive force between a motor magnet and back iron of said pump. 20. A blood pump according to claim 12, wherein said plurality of lifts are sized and shaped to produce a hydrodynamic bearing when a clearance between said internal pump surface and said rotor is within a range of about 0.0002 inches to 0.001 inches. 21. A blood pump according to claim 19, wherein said compensatory force produced by said plurality of lifts equals at least around 1.302 pounds. 22. A blood pump according to claim 12, wherein said housing magnet and said rotor magnet are positioned to be offset from each other in an axial direction.

이 특허에 인용된 특허 (213)

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Yih-Choung Yu ; Kirk A. Lehmann ; John Chiasson ; Wayne P. Griffin, Non-invasive flow indicator for a rotary blood pump.
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Yu Yih-Choung ; Lehmann Kirk A. ; Chiasson John ; Griffin Wayne P., Non-invasive flow indicator for a rotary blood pump.
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Siess, Thorsten, Paracardiac blood pump.
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Carriker John W. (Gold River CA) Wampler Richard K. (Gold River CA), Percutaneous axial flow blood pump.
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Wampler Richard K. (Gold River CA), Percutaneous bloom pump with mixed-flow output.
상세보기
Fonger James D. (Wayland MA) Jonkman Kenneth R. (Grand Rapids MI) Anderson James H. (Columbia MD) Mitchell Sally E. (Baltimore MD), Percutaneous transseptal left atrial cannulation system.
상세보기
Macoviak John A., Peripheral entry biventricular catheter system for providing access to the heart for cardiopulmonary surgery or for pro.
상세보기
Reich, Sanford; Bullister, Edward Theodore, Physiological heart pump control.
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Epstein,Alan H.; Deux,Antoine; Peles,Yoav P.; Jamonet,Laurent, Planar turbopump assembly.
상세보기
Mori Toshio,JPX ; Yamazaki Kenji,JPX ; Higuchi Koji,JPX ; Kaneko Keiichi,JPX, Portable drive system for artificial heart.
상세보기
Bennett Alan N. (2342 Hosp Way Carlsbad CA 92008), Portable medical suction device.
상세보기
Aboul-Hosn Walid N. ; Kanz William R. ; McCrystle Kelly J. ; O'Connell Desmond P., Pressure sensing cannula.
상세보기
Aboul-Hosn, Walid Najib; Kanz, William Russell, Pulmonary and circulatory blood flow support devices and methods for heart surgery procedures.
상세보기
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.
상세보기
Chrestoff Brian M. ; Ash ; Jr. Robert H., Pump having unidirectional tapered land thrust bearing cluster.
상세보기
Davis, William D.; Lancisi, David M., Pump with an electrodynamically supported impeller and a hydrodynamic bearing between the impeller and the stator.
상세보기
Davis, William D.; Lancisi, David M., Pump with electrodynamically supported impeller.
상세보기
Mizobuchi Shotaro (Kanagawa JPX) Sasaki Katsumi (Tokyo JPX) Kimura Yoshikazu (Kanagawa JPX), Pump with shaftless impeller.
상세보기
Larson ; Jr. Carl O. ; Smith James S. ; Chapman John H. ; Slimon Scot A. ; John Trahan D. ; Rosen Marvin E. ; Brozek Robert J. ; Franco Alberto ; McGarvey John J. ; Pasque Michael K., Reciprocating pump circulatory assist arrangement.
상세보기
Turi Zoltan (West Bloomfield MI), Retaining apparatus and procedure for transseptal catheterization.
상세보기
Aboul-Hosn Walid, Reverse flow transport pump and organ stabilization apparatus including related methods.
상세보기
Bozeman ; Jr. Richard J. (Dickinson TX) Akkerman James W. (Houston TX) Aber Gregory S. (Houston TX) Van Damm George A. (Houston TX) Bacak James W. (Houston TX) Svejkovsky Paul A. (Webster TX) Benkows, Rotary blood pump.
상세보기
Wampler Richard K. ; Lancisi David M., Rotary blood pump.
상세보기
Ayre, Peter Joseph; Tansley, Geoffrey Douglas; Watterson, Peter Andrew; Woodard, John Campbell, Rotary blood pump and control system therefor.
상세보기
Bearnson, Gill; Jacobs, Gordon B., Rotary blood pump diagnostics and cardiac output controller.
상세보기
Woodard John C.,AUX ; Watterson Peter A.,AUX ; Tansley Geoffrey D.,AUX, Rotary pump with exclusively hydrodynamically suspended impeller.
상세보기
Woodard, John C.; Watterson, Peter A.; Tansley, Geoffrey D., Rotary pump with exclusively hydrodynamically suspended impeller.
상세보기
Woodard, John C.; Watterson, Peter A.; Tansley, Geoffrey D., Rotary pump with exclusively hydrodynamically suspended impeller.
상세보기
Woodard,John C.; Watterson,Peter A.; Tansley,Geoffrey D., Rotary pump with exclusively hydrodynamically suspended impeller.
상세보기
Watterson Peter Andrew,AUX ; Tansley Geoffrey Douglas,AUX ; Woodard John Campbell,AUX, Rotary pump with hydrodynamically suspended impeller.
상세보기
Woodard, John Campbell; Watterson, Peter Andrew; Tansley, Geoffrey Douglas, Rotary pump with hydrodynamically suspended impeller.
상세보기
Woodard,John Campbell; Watterson,Peter Andrew; Tansley,Geoffrey Douglas, Rotary pump with hydrodynamically suspended impeller.
상세보기
Golding Leonard A. R. ; Smith William A., Rotodynamic pump with non-circular hydrodynamic bearing journal.
상세보기
Hauenstein Ernst (Vordemwald CHX), Sealing shroud centrifugal pump.
상세보기
Golding Leonard A. R. (Moreland Hills OH) Smith William A. (Lyndhurst OH) Wade Warren F. (Orange Village OH), Sealless heart pump.
상세보기
Richard K. Wampler, Sealless rotary blood pump.
상세보기
Wampler Richard K., Sealless rotary blood pump.
상세보기
Wampler Richard K., Sealless rotary blood pump.
상세보기
Wampler Richard K., Sealless rotary blood pump.
상세보기
Wampler, Richard K., Sealless rotary blood pump.
상세보기
Wampler Richard K. (Granite Bay CA), Sealless rotary blood pump with passive magnetic radial bearings and blood immersed axial bearings.
상세보기
Golding Leonard A. R. (Moreland Hills OH) Smith William A. (Lyndhurst OH) Wade Warren F. (Orange Village OH), Sealless rotodynamic pump with fluid bearing.
상세보기
Golding Leonard A. R. (Moreland Hills OH) Smith William A. (Lyndhurst OH), Sealless rotodynamic pump with radially offset rotor.
상세보기
Schmitz-Rode, Thomas; Gunther, Rolf W., Self-deploying axial-flow pump introduced intravascularly for temporary cardiac support.
상세보기
Ranford Alan B. (St. Louis MO), Single use syringe.
상세보기
Wampler Richard K. (Gold River CA) Carriker John W. (Gold River CA) Butler Kenneth C. (Carmichael CA) Moise John C. (Carmichael CA), Single-stage axial flow blood pump.
상세보기
Antaki James F. ; Choi Seongjin ; Boston John Robert ; Butler Kenneth C. ; Thomas Douglas C., Speed control system for implanted blood pumps.
상세보기
Nash John (145 Oak St. Downingtown PA 19335), Spiral wire bearing for rotating wire drive catheter.
상세보기
Derrieu Guy (Cagnes sur Mer FRX) Raynier Bernard (Nice FRX), Stabilized pulverulent active agents, compositions containing them, process for obtaining them and their applications.
상세보기
Siess Thorsten,DEX, Statorless intravascular microaxial flow pump.
상세보기
Erbel, Reimund; Voegele, Gerald; Weisener, Thomas; Maya, Andreas; Bark, Carlo; Widmann, Mark, System for actively supporting the flow of body fluids.
상세보기
Stevens John H. ; Sterman Wesley D. ; Gifford ; III Hanson S. ; Machold Timothy R., System for cardiac procedures.
상세보기
Talpade Dnyanesh, System for treating congestive heart failure.
상세보기
Khaw,Kenneth; Li,John K J, Temporary blood circulation assist device.
상세보기
Yoshioka Masahiro (Ibaraki JPX) Koike Toshifumi (Shimoinayoshi JPX), Thrust bearing.
상세보기
Oshima Saburo (Shizuoka JPX) Nakazeki Tsugito (Shizuoka JPX) Akamatsu Teruaki (Kyoto JPX) Niki Motoharu (Nara JPX), Turbo pump with magnetically supported impeller.
상세보기
Sakagami Seiji (Ibaraki JPX) Ueda Shinjiro (Abiko JPX) Mase Masahiro (Tochigi JPX) Nagaoka Takashi (Tsukuba JPX), Turbo vacuum pump.
상세보기
Lemarquand Guy (Villaz FRX) Perrillat-Amede Denis (Annecy le Vieux FRX) Pierrejean Didier (Sevrier FRX), Vacuum pump for producing a clean molecular vacuum.
상세보기
Orejola Wilmo C. (1012 Black Oak Ridge Rd. Wayne NJ 07470), Ventricular venting loop.
상세보기
Smith William A. (Lyndhurst OH), Viscous seal blood pump.
상세보기
Trouplin Claude (La Ferte St Aubin FRX), Wind power of hydraulic power machine with axial feed, radial outflow, and variable geometry vanes, and projectiles fitt.
상세보기
Belady, Christian L., Winglet-enhanced fan.
상세보기

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

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Rotary blood pump 원문보기

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Rotary blood pump 원문보기

초록 ▼

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