US 12,137,931 B2
Occlusion-crossing devices
Richard R. Newhauser, Redwood City, CA (US); Theodore W. Ketai, San Francisco, CA (US); Peter H. Smith, Pacifica, CA (US); and Myra L. Fabro, San Jose, CA (US)
Assigned to Avinger, Inc., Redwood City, CA (US)
Filed by Avinger, Inc., Redwood City, CA (US)
Filed on Mar. 22, 2021, as Appl. No. 17/209,168.
Application 17/209,168 is a continuation of application No. 15/954,407, filed on Apr. 16, 2018, granted, now 10,952,763.
Application 15/954,407 is a continuation of application No. 14/433,786, granted, now 9,949,754, issued on Apr. 24, 2018, previously published as PCT/US2013/064346, filed on Oct. 10, 2013.
Application 15/954,407 is a continuation of application No. 13/433,049, filed on Mar. 28, 2012, granted, now 8,644,913, issued on Feb. 4, 2014.
Claims priority of provisional application 61/799,505, filed on Mar. 15, 2013.
Claims priority of provisional application 61/712,149, filed on Oct. 10, 2012.
Claims priority of provisional application 61/548,179, filed on Oct. 17, 2011.
Claims priority of provisional application 61/468,396, filed on Mar. 28, 2011.
Prior Publication US 2021/0330345 A1, Oct. 28, 2021
Int. Cl. A61B 17/3207 (2006.01); A61B 17/00 (2006.01); A61B 17/32 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/320758 (2013.01) [A61B 17/320783 (2013.01); A61B 2017/003 (2013.01); A61B 2017/00336 (2013.01); A61B 2017/00398 (2013.01); A61B 2017/320004 (2013.01); A61B 2017/320052 (2013.01); A61B 2017/320056 (2013.01); A61B 2090/3735 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A catheter device for crossing occlusions, the catheter device comprising:
an elongate catheter shaft;
a rotatable tip configured to rotate relative to the elongate catheter shaft, wherein the rotatable tip comprises a central guidewire lumen, wherein the rotatable tip further comprises:
a distal grinding surface that is substantially perpendicular to the guidewire lumen, wherein the distal grinding surface comprises a plurality of divots and sharp points that form pyramidal features, wherein the sharp points extend distally from the distal grinding surface; and
a fluted portion having a plurality of flutes extending around a circumference of the rotatable tip proximal to the distal grinding surface, wherein the fluted portion does not include the plurality of divots and sharp points that form the pyramidal features of the distal grinding surface;
a drive shaft extending within the elongate catheter shaft and configured to rotate the rotatable tip; and
an OCT imaging sensor comprising an optical fiber coupled with the rotatable tip and configured to rotate therewith.