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Machine translation
1. (WO2001002724) BLOOD PUMP HAVING A MAGNETICALLY SUSPENDED ROTOR
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2001/002724    International Application No.:    PCT/US2000/018098
Publication Date: 11.01.2001 International Filing Date: 30.06.2000
Chapter 2 Demand Filed:    31.01.2001    
IPC:
A61M 1/10 (2006.01), A61M 1/12 (2006.01), F04D 3/00 (2006.01), F04D 13/06 (2006.01), F04D 29/04 (2006.01), H02K 1/27 (2006.01), H02K 7/09 (2006.01), H02K 7/14 (2006.01)
Applicants: UNIVERSITY OF PITTSBURGH [US/US]; 911 William Pitt Union, Pittsburgh, PA 15260 (US).
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [US/US]; NASA Langley Research Center, 3 Langley Boulevard, Mail Stop 212, Hampton, VA 23681-2199 (US)
Inventors: ANTAKI, James, F.; (US).
PADEN, Bradley; (US).
BURGREEN, Gregory; (US).
GROOM, Nelson, J.; (US)
Agent: CALDWELL, John, W.; Woodcock Washburn Kurtz Mackiewicz & Norris LLP, 46th Floor, One Liberty Place, Philadelphia, PA 19103 (US)
Priority Data:
60/142,354 01.07.1999 US
09/356,662 19.07.1999 US
Title (EN) BLOOD PUMP HAVING A MAGNETICALLY SUSPENDED ROTOR
(FR) POMPE A SANG COMPORTANT UN ROTOR SUSPENDU MAGNETIQUEMENT
Abstract: front page image
(EN)A blood pump (500) preferably has a magnetically suspended rotor (502) that rotates within a housing (506). The rotor (502) may rotate about a stator (504) disposed within the housing. Radial magnetic bearings (560) may be defined within a stator (504) and a rotor (502) in order to suspend the rotor (502). The radial magnetic bearings (560) may be passive magnetic bearings that include permanent magnets disposed within the stator and the rotor or active magnetic bearings. The pump (500) may further include an axial magnetic bearing (562) that may be either a passive or an active magnetic bearing. A motor stator (508) that drives the rotor may be disposed within the housing in order to more easily dissipate heat generated by the motor stator (508). A primary flow path (552) is defined between the stator (504) and the rotor (502), and a secondary flow path (552) is defined between the stator (504) and the rotor (502). Preferably, a substantial majority of blood passes through the primary flow path (550). The secondary flow path (552) is large enough so that it provides adequate flushing of the secondary flow path (552) while being small enough to permit efficient operation of the radial magnet bearings (560) across the secondary path (552).
(FR)L'invention concerne une pompe à sang (10) comportant de préférence un rotor (44) suspendu magnétiquement qui tourne à l'intérieur d'un logement (12). Des paliers (fig. 3) magnétiques radiaux peuvent être définis à l'intérieur du stator et du rotor afin de suspendre le rotor. La pompe (10) peut comporter en outre un palier (64) magnétique axial pouvant être un palier magnétique passif (fig. 6-7, 11-13) ou actif (fig. 10, 14-16). On peut placer un moteur entraînant le rotor à l'intérieur du logement pour dissiper plus facilement la chaleur produite par le moteur. Un trajet d'écoulement primaire est défini entre le rotor et le stator, et un trajet d'écoulement secondaire est défini entre le stator et le rotor. De préférence, la majeure partie du sang passe par le trajet d'écoulement primaire. Le trajet d'écoulement secondaire est assez grand pour assurer un rinçage adéquat de celui-ci, et assez petit pour permettre un fonctionnement efficace des paliers magnétiques radiaux dans le trajet d'écoulement secondaire.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)