Chronic total occlusion crossing devices with imaging
AssigneeAvinger, Inc.
InventorsPeter H. Smith, Manish Kankaria, Priyanshu Gupta, Nicholas J. Spinelli, Charles W. McNall
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Abstract
An imaging device includes a hollow flexible shaft having a central longitudinal axis and an imaging window therein. An optical fiber extends within the hollow flexible shaft substantially along the central axis. A distal tip of the optical fiber is attached to the hollow flexible shaft and aligned with the imaging window so as to transfer an optical coherence tomography signal through the imaging window. A handle is attached to the hollow flexible shaft configured rotate the hollow flexible shaft at speeds of greater than 1,000 rpm.
Claims18
An occlusion crossing device comprising:
- a rotatable hollow flexible shaft having a central longitudinal axis and an imaging window therein;
- an optical fiber extending within the rotatable hollow flexible shaft substantially along the central longitudinal axis of the hollow flexible shaft, a distal tip of the optical fiber aligned with the imaging window so as to transfer an optical coherence tomography signal through the imaging window;
- and
- a cutter attached to a distal end of the hollow flexible shaft.
A method of crossing an occlusion in a blood vessel, the method comprising:
- inserting an occlusion crossing device into the blood vessel, the occlusion crossing device including a hollow flexible shaft having a central longitudinal axis and an imaging window therein, an optical fiber extending within the hollow flexible shaft substantially along the central longitudinal axis of the hollow flexible shaft to transfer an optical coherence tomography signal, and a cutter attached to a distal end of the hollow flexible shaft;
- rotating the hollow flexible shaft and the cutter so as to separate tissue of the occlusion;
- collecting images of the blood vessel through the imaging window with the optical fiber;
- and
- passing the cutter through the occlusion.
Dependencies are inferred from the claim text.