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1. WO2000043678 - MOTOR ROTOR BEARING ASSEMBLY FOR A BLOOD PUMP

Publication Number WO/2000/043678
Publication Date 27.07.2000
International Application No. PCT/US2000/001658
International Filing Date 24.01.2000
Chapter 2 Demand Filed 23.08.2000
IPC
A61M 1/10 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
A61M 1/12 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
12implantable into the body
F04D 13/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
13Pumping installations or systems
02Units comprising pumps and their driving means
06the pump being electrically driven
F04D 29/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
04Shafts or bearings, or assemblies thereof
CPC
A61M 1/1008
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
1008Tubes; Connections therefor
A61M 1/101
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
101Non-positive displacement pumps, e.g. impeller, centrifugal, vane pumps
A61M 1/1012
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
101Non-positive displacement pumps, e.g. impeller, centrifugal, vane pumps
1012Constructional features thereof
A61M 1/1013
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
101Non-positive displacement pumps, e.g. impeller, centrifugal, vane pumps
1012Constructional features thereof
1013Types of bearings
A61M 1/1031
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
101Non-positive displacement pumps, e.g. impeller, centrifugal, vane pumps
1029Drive systems therefor
1031using a motor with canned rotor, i.e. a motor enclosed within a casing along with the rotor so that the motor bearings are lubricated by the blood that is being pumped
A61M 1/12
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
12implantable into the body
Applicants
  • NIMBUS, INC. [US/US]; 2945 Kilgore Road Rancho Cordova, CA 95670, US (AllExceptUS)
  • MAHER, Timothy, R. [US/US]; US (UsOnly)
  • LE BLANC, Pieter, W., C., J. [NL/US]; US (UsOnly)
  • PETERSEN, Tracy, V. [US/US]; US (UsOnly)
  • BUTLER, Kenneth, C. [US/US]; US (UsOnly)
Inventors
  • MAHER, Timothy, R.; US
  • LE BLANC, Pieter, W., C., J.; US
  • PETERSEN, Tracy, V.; US
  • BUTLER, Kenneth, C.; US
Agents
  • SHUMAKER, Steven, J.; Fish & Richardson P.C., P.A. Suite 3300 60 South Sixth Street Minneapolis, MN 55402, US
Priority Data
09/237,72126.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MOTOR ROTOR BEARING ASSEMBLY FOR A BLOOD PUMP
(FR) ENSEMBLE PALIER DE ROTOR DE MOTEUR POUR POMPE A SANG
Abstract
(EN)
A motor rotor assembly for use in a blood pump can include a motor rotor disposed within a blood flow conduit, an inflow bearing having an inflow ball-and-cup bearing interface disposed within the blood flow conduit proximal to an inflow port of the blood flow conduit, and an outflow bearing having an outflow ball-and-cup bearing interface disposed within the blood flow conduit proximal to an outflow port of the blood flow conduit. The motor can be rotatably mounted between the inflow bearing and the outflow bearing and an outer diameter of the outflow ball-and-cup bearing interface can be larger than an outer diameter of the inflow ball-and-cup bearing interface. A motor rotor assembly for use in a blood pump incorporating aspects of the invention may improve performance, reliability and longevity of the pump. A blood pump incorporating a motor rotor can further include a motor stator. These rotors and pumps can be used in both implantable and extracorporeal blood pumps.
(FR)
L'invention concerne un ensemble rotor de moteur s'utilisant dans une pompe à sang, qui peut comporter un rotor de moteur placé dans un conduit d'écoulement de sang, un palier d'entrée comportant une interface de palier d'entrée à billes et à rotule située dans le conduit d'écoulement de sang à proximité d'un orifice d'entrée du conduit d'écoulement de sang, et un palier de sortie comportant une interface de palier de sortie à billes et à rotule située dans le conduit d'écoulement de sang à proximité d'un orifice de sortie du conduit d'écoulement de sang. Le moteur peut être monté rotatif entre le palier d'entrée et le palier de sortie, et le diamètre extérieur de l'interface de palier de sortie à billes et à rotules peut être supérieur au diamètre extérieur de l'interface de palier d'entrée à billes et à rotules. L'ensemble rotor de moteur pour pompe à sang incorporant des aspects de l'invention permet d'améliorer les performances, la fiabilité et la durée de vie de la pompe. Une pompe à sang incorporant un rotor de moteur peut en outre comporter un stator de moteur. Ces rotors et ces pompes peuvent être utilisés à la fois dans des pompes à sang implantables et à circulation extracorporelle.
Also published as
Latest bibliographic data on file with the International Bureau