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1. WO2020198035 - MECHANICAL CIRCULATORY SUPPORT PUMP DRIVE WITH CORROSION PROTECTION

Publication Number WO/2020/198035
Publication Date 01.10.2020
International Application No. PCT/US2020/023937
International Filing Date 20.03.2020
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
CPC
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 1/102
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
102having a purge fluid supply
A61M 1/1025
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
1025Details on blood sealings between rotational parts, e.g. sealing by axial forces
A61M 1/1029
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
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 1/1036
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
1036using rotating magnets for driving
Applicants
  • BOSTON SCIENTIFIC SCIMED INC [US]/[US]
Inventors
  • VANCAMP, Daniel H.
  • ROBERTSON, Kimberly A.
  • LARSEN, Steven R.
Agents
  • BUDD, Theodore M.
  • OBERST, Brian W.
  • KRAUS, Jason R.
Priority Data
62/823,20925.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MECHANICAL CIRCULATORY SUPPORT PUMP DRIVE WITH CORROSION PROTECTION
(FR) ENTRAÎNEMENT DE POMPE DE SUPPORT CIRCULATOIRE MÉCANIQUE AVEC PROTECTION CONTRE LA CORROSION
Abstract
(EN)
A blood pump includes an impeller; a drive shaft coupled to the impeller and configured to rotate with the impeller; and a rotor coupled to the drive shaft and configured to rotate with the drive shaft. The rotor includes a driven magnet having an outer surface. A corrosion-resistant coating may be disposed on the outer surface of the driven magnet. A stator is disposed adjacent the rotor and configured to drive the rotor, causing the rotor to rotate; and a motor is configured to drive the stator. A protection assembly may be disposed adjacent the stator and configured to receive an end of the drive shaft, and may include a protection assembly housing enclosing a protective fluid chamber, the protective fluid chamber including the driven magnet and at least a portion of a bearing configured to engage the end of the drive shaft.
(FR)
L'invention concerne une pompe à sang comprenant une roue ; un arbre d'entraînement couplé à la roue et conçu pour tourner avec la roue ; et un rotor couplé à l'arbre d'entraînement et conçu pour tourner avec l'arbre d'entraînement. Le rotor comprend un aimant entraîné ayant une surface externe. Un revêtement résistant à la corrosion peut être disposé sur la surface extérieure de l'aimant entraîné. Un stator est disposé adjacent au rotor et conçu pour entraîner le rotor, amenant le rotor à tourner ; et un moteur est conçu pour entraîner le stator. Un ensemble de protection peut être disposé adjacent au stator et conçu pour recevoir une extrémité de l'arbre d'entraînement, et peut comprendre un boîtier d'ensemble de protection entourant une chambre de fluide de protection, la chambre de fluide de protection comprenant l'aimant entraîné et au moins une partie d'un palier conçu pour venir en prise avec l'extrémité de l'arbre d'entraînement.
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