Percutaneous axial flow blood pump

Details Percutaneous axial flow blood pump Percutaneous axial flow blood pump

1989-02-23

1990-07-31

Pellegrino, Stephen C.

Surgery

Cardiac augmentation

128DIG3, 604151, 604264, 415900, A61M 100

Patent

active

049447220

ABSTRACT:
The reliability and compactness of a percutaneously insertable intravascular axial flow blood pump are improved by connecting the pump's rotor and drive cable through a resiliently extendable rotor extension. The rotor extension and drive cable fitting are so designed that the thrust bearing surfaces of the purge seal and cable fitting can be preloaded by strongly pulling the cable fitting against the resiliency of the rotor extension to move one of the bearings away from the other, then relaxing it to a predetermined preload, and finally immobilizing the bearing in the position corresponding to that preload.

REFERENCES:
patent: 4135253 (1979-01-01), Reich et al.
patent: 4589822 (1986-05-01), Clausen et al.
patent: 4625712 (1986-12-01), Wampler
patent: 4688998 (1987-08-01), Olsen et al.
patent: 4704121 (1987-11-01), Moise
patent: 4753221 (1988-06-01), Kensey et al.
patent: 4779614 (1988-10-01), Moise
patent: 4817586 (1989-04-01), Wampler
patent: 4846152 (1989-07-01), Wampler et al.

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