CPC A61B 17/320758 (2013.01) [A61B 17/00234 (2013.01); A61B 17/22 (2013.01); A61B 17/32002 (2013.01); A61B 90/37 (2016.02); A61B 90/39 (2016.02); A61B 2017/00309 (2013.01); A61B 2017/22094 (2013.01); A61B 2090/3735 (2016.02)] | 20 Claims |
1. An occlusion crossing system, the system comprising:
an outer shaft defining a lumen and a distal opening that is angled relative to a central axis of the outer shaft to form a tapered distal end, and a first engagement region within the lumen; and
an inner shaft extending within the lumen and configured to rotate with respect to the outer shaft, the inner shaft including a distal end having a fluted tip with cutting edges that are configured to extend through the distal opening of the outer shaft, a side-facing optical coherence tomography (OCT) imaging window on a lateral side of the inner shaft at a distal region of the inner shaft, and a second engagement region on an outer surface of the inner shaft configured to engage with the first engagement region to limit a distal movement of the inner shaft within the outer shaft;
wherein when the cutting edges are fully extended distally through the distal opening of the outer shaft, the tapered distal end of the outer shaft is configured to occlude the OCT imaging window at a defined rotational position as the inner shaft is rotated relative to the outer shaft to provide a registration mark for OCT imaging.
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