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1. WO2000038757 - ROTARY BLOOD PUMP WITH CERAMIC MEMBERS

Publication Number WO/2000/038757
Publication Date 06.07.2000
International Application No. PCT/US1999/026837
International Filing Date 10.11.1999
Chapter 2 Demand Filed 26.06.2000
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
F04D 29/02 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
02Selection of particular materials
CPC
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 1/1015
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
1015Magnetic 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 1/122
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
122Heart assist devices, i.e. for assisting an ailing heart, using additional pumping means in the blood circuit
F04D 29/026
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
02Selection of particular materials
026especially adapted for liquid pumps
F05D 2300/20
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2300Materials; Properties thereof
20Oxide or non-oxide ceramics
Applicants
  • KRITON MEDICAL, INC. [US/US]; 6790 Florin-Perkins Road Sacramento, CA 95828-1812, US (AllExceptUS)
  • CAO, Hengchu [US/US]; US (UsOnly)
  • LANCISI, David, M. [US/US]; US (UsOnly)
Inventors
  • CAO, Hengchu; US
  • LANCISI, David, M.; US
Agents
  • GERSTMAN, George, H.; Seyfarth, Shaw, Fairweather & Geraldson 43rd Floor 55 East Monroe Street Chicago, IL 60603-5803, US
Priority Data
09/221,09428.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ROTARY BLOOD PUMP WITH CERAMIC MEMBERS
(FR) POMPE A SANG ROTATIVE AVEC ELEMENTS EN CERAMIQUE
Abstract
(EN)
An implantable rotary blood pump including a rotor mounted for rotation within a pump housing. The rotor has a shaft portion and an impeller carried by the shaft portion. A rotor motor is provided, with a motor including a plurality of permanent magnets carried by the impeller and motor stators on opposite sides of the impeller. Structural members are provided between the impeller and stators to provide structural support and hermetical sealing. The structural members comprise biocompatible, corrosion resistant, electrically non-conducting ceramic material, which alleviate eddy current losses.
(FR)
Cette invention concerne une pompe à sang rotative implantable comprenant un rotor monté de manière à pouvoir tourner à l'intérieur d'un corps de pompe. Le rotor comprend un axe sur lequel est montée une roue à ailettes. Cette pompe comprend également un moteur à rotor comprenant une pluralité d'aimants permanents fixés sur la roue à ailettes et des stators fixés sur les faces opposées à la roue à ailettes. Des éléments de structure sont situés entre la roue à ailettes et les stators afin de servir de support de structure et d'éléments d'étanchéification. Les éléments de structure sont constitués d'un matériau céramique biocompatible, résistant à la corrosion, non électro-conducteur, et permettant d'atténuer les pertes par courants parasites.
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