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1. WO2005028000 - ROTARY BLOOD PUMP

Publication Number WO/2005/028000
Publication Date 31.03.2005
International Application No. PCT/US2004/029842
International Filing Date 14.09.2004
IPC
A61M 1/10 2006.1
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
CPC
A61M 1/00
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
A61M 60/148
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
60Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
10Location thereof with respect to the patient's body
122Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
126implantable via, into, inside, in line, branching on, or around a blood vessel
148in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/205
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
60Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
20Type thereof
205Non-positive displacement blood pumps
A61M 60/419
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
60Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
40Details relating to driving
403for non-positive displacement blood pumps
419the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
A61M 60/422
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
60Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
40Details relating to driving
403for non-positive displacement blood pumps
422the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/818
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
60Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
80Constructional details other than related to driving
802of non-positive displacement blood pumps
818Bearings
Applicants
  • MYRAKELLE, LLC [US]/[US] (AllExceptUS)
  • WAMPLER, Richard [US]/[US] (UsOnly)
  • LANCISI, David [US]/[US] (UsOnly)
Inventors
  • WAMPLER, Richard
  • LANCISI, David
Agents
  • DAVIS, William
Priority Data
60/504,23318.09.2003US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ROTARY BLOOD PUMP
(FR) POMPE SANGUINE ROTATIVE
Abstract
(EN)
Various 'contactless' bearing mechanisms including hydrodynamic and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing (110) defining a pumping chamber (112). The housing has a spindle (130) extending into the pumping chamber. A spindle magnet assembly (160) includes first and second magnets (262,264) disposed within the spindle. The first and second magnets are arranged proximate each other with their respective magnetic vectors opposing each other. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.
(FR)
divers mécanismes de palier sans contact comprenant des paliers hydrodynamiques et magnétiques sont destinés à une pompe rotative comme alternative à des paliers à contact mécanique. Dans un mode de réalisation de l'invention, un dispositif de pompe comprend un boîtier de pompe (110) définissant une chambre de pompage (112). Ce boîtier possède un rotor (160) s'étendant dans la chambre de pompage. Un ensemble aimant de rotor (160) comprend un premier et un second aimant (262,264) placés à l'intérieur du rotor. Le premier et le second aimant sont agencés à proximité d'un de l'autre avec leur vecteur magnétique respectif s'opposant entre eux. L'absence de palier à contact mécanique permet d'obtenir une durée de vie de pont supérieure et une dégradation des fluides de travail, tel que du sang, moindre.
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