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

Claim 0:
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.