Patent ID: 11903677
Assignee: AVINGER, INC.
Field: Medical technology (Instruments)
Classification: CPC A  F | IPC A

Claim 0:
1. A method of crossing a chronic total occlusion, the method comprising:
advancing an occlusion crossing catheter into an occluded body lumen of a patient;
rotating a rotatable distal tip of the catheter relative to an elongate body of the catheter, wherein the distal tip includes at least one helical blade and an optical coherence tomography (OCT) imaging sensor;
imaging a region of the body lumen surrounding the catheter using the OCT sensor on the rotatable tip, wherein the catheter includes at least one marker configured to obstruct imaging from the OCT sensor at least once per rotation of the rotatable tip; and
steering the catheter within the body lumen of the patient based upon the OCT image of the body lumen and the marker.