Catheter-based off-axis optical coherence tomography imaging system

US10729326B2 · kind B2 · utility

Assignee

• Avinger, Inc. · US

Inventors

• Maegan K. Spencer · La Honda, US
• Christopher B. White · Mesa, US
• Charles W. McNall · Cottonwood Heights, US
• Dennis W. Jackson · San Francisco, US
• Michael Zung · Redwood City, US
• Nicholas J. Spinelli · San Mateo, US
• Benjamin Ngo · San Jose, US
• Evangeline Lumabas · San Jose, US
• Kin F. Chan · San Jose, US
• John Black · San Mateo, US
• Michael H. Rosenthal · Palo Alto, US
• John B. Simpson · Woodside, US

Key dates

• Filing date: Jul 10, 2013
• Grant date: Aug 4, 2020
• Expiry date: Jul 10, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/7257
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A system for imaging a body lumen includes a controller and a display. The controller is configured to connect to a proximal end of a catheter having an optical fiber extending along the length of an elongate catheter body. The controller is further configured to rotate a distal end of the optical fiber from a location near a proximal end of the elongate catheter body, acquire optical coherence tomography (OCT) images using the optical fiber as the distal end of the optical fiber rotates, and determine a rotational lag of the distal end of the optical fiber. The display is configured to display one or more OCT images corrected for the rotational lag.