Patent ID: 11957376
Assignee: AVINGER, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 19:
20. An atherectomy catheter device, the device comprising:
an elongate body;
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, wherein an outer wall of the serrated annular cutting edge is angled radially inward relative to an outer diameter of the elongate body,
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 grinding segment comprising an inner edge that extends substantially straight from the serrated annular cutting edge to a center of the cutter,
wherein the center of the cutter comprises a recessed flat section.