Atherectomy catheter drive assemblies

US11206975B2 · kind B2 · utility

Assignee

• Avinger, Inc. · US

Inventors

• Brian Y. Tachibana · Oakland, US
• Charles W. McNall · Cottonwood Heights, US
• Michael Zung · Redwood City, US
• Peter Howard Smith · Pacifica, US
• Brian Chiu · San Francisco, US
• Douglas Joseph Scott Bourne · Campbell, US
• Priyanshu Gupta · Palo Alto, US

Key dates

• Filing date: Apr 1, 2019
• Grant date: Dec 28, 2021
• Expiry date: Jul 6, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B17/320758
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which at least a portion of the fiber optic rotating junction extends.