Drive shaft design, conditioning and stabilization methods for rotational medical devices

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11980385
APP PUB NO 20220249122A1
SERIAL NO

17650565

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A flexible drive shaft assembly is provided for an intravascular medical device, for example and without limitation, a blood pump, a rotational atherectomy device, or a rotational thrombectomy device. The blood pump embodiment provides an electric motor and a rotational impeller, with a rotational drive shaft disposed therebetween and configured to rotationally drive the impeller. The drive shaft is moved from an undeformed length to a deformed length when connected between the electric motor and the rotational impeller to provide a biasing force on the rotational impeller in the proximal direction to maintain the impeller in a desired axial or linear location. In other embodiments, drive shaft comprises a proximal section with a length and a spring constant and a distal section of relatively longer length and a relatively higher spring constant. In other embodiments, hypotube(s) and/or support mandrel(s) may be provided.

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Patent Owner(s)

  • CARDIOVASCULAR SYSTEMS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hanson, Matthew W St. Louis Park, US 1 0
Haselman, Benjamin D St. Paul, US 7 42
Van, de Moortele Tristan A Minneapolis, US 6 74

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