US 11,957,376 B2
Atherectomy catheter with serrated cutter
Himanshu N. Patel, San Jose, CA (US); Richard R. Newhauser, Redwood City, CA (US); Anthony J. Fernandez, San Mateo, CA (US); and Vincent Yeh, Redwood City, CA (US)
Assigned to Avinger, Inc., Redwood City, CA (US)
Filed by Avinger, Inc., Redwood City, CA (US)
Filed on Aug. 1, 2022, as Appl. No. 17/816,673.
Application 17/816,673 is a continuation of application No. 16/148,246, filed on Oct. 1, 2018, granted, now 11,399,863.
Application 16/148,246 is a continuation in part of application No. PCT/US2017/025555, filed on Mar. 31, 2017.
Claims priority of provisional application 62/317,214, filed on Apr. 1, 2016.
Claims priority of provisional application 62/317,231, filed on Apr. 1, 2016.
Prior Publication US 2023/0157718 A1, May 25, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/3207 (2006.01); A61B 5/00 (2006.01); A61B 17/00 (2006.01); A61B 17/22 (2006.01); A61B 17/32 (2006.01); A61B 90/50 (2016.01); A61B 90/00 (2016.01); A61B 90/57 (2016.01)
CPC A61B 17/320758 (2013.01) [A61B 5/0066 (2013.01); A61B 5/0084 (2013.01); A61B 17/320783 (2013.01); A61B 90/50 (2016.02); A61B 2017/00477 (2013.01); A61B 2017/22052 (2013.01); A61B 2017/22055 (2013.01); A61B 2017/22067 (2013.01); A61B 2017/22071 (2013.01); A61B 2017/22079 (2013.01); A61B 2017/320004 (2013.01); A61B 2017/320791 (2013.01); A61B 2090/3735 (2016.02); A61B 2090/571 (2016.02); A61B 2217/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An atherectomy catheter device, the device comprising:
an elongate body; and
a drive shaft extending proximally to distally within the elongate body; and
a cutter attached to the driveshaft, the cutter including:
a serrated annular cutting edge formed on a distal edge of the cutter, the serrated annular cutting edge including a plurality of convex portions, each of the plurality of portions having a convex shape with no sharp points along a distal-most circumference of the cutting edge,
a recessed bowl extending radially inwards from the annular cutting edge to a center of the cutter, and
a plurality of grinding segments positioned within the recessed bowl, each of the plurality of grinding segments comprising an inner edge that extends substantially straight from the serrated annular cutting edge to a center of the cutter, wherein each of the plurality of grinding segments is configured to break calcified and hard fibrous disease tissue in an artery.