Avinger, Inc.

Vincent Yeh

Himanshu N Patel

Anthony J Fernandez

Richard Roy Newhauser, Jr

An atherectomy catheter for use in a vessel includes a catheter body, a nosecone and an annular cutter. The catheter body has a curved portion with a fixed jog section and an adjacent flexible section having a greater flexibility than a remainder of the catheter body. The fixed jog section and the flexible section include a frame having circumferential slits arranged in rows and in a circumferentially offset pattern. The circumferential slits of the flexible section are configured to allow the flexible section to passively bend in multiple directions during positioning of the catheter body within the vessel. The fixed jog section further includes a longitudinal spline having a pre-set curvature. The nosecone is attached to a distal end of the catheter body and includes a cutting window. The annular cutter configured to rotate with respect to the catheter body and positioned within the cutting window.

Atherectomy catheter with shaped distal tip

An atherectomy catheter device includes an elongate body, a drive shaft extending proximally to distally within the elongate body, and a cutter attached to the drive shaft. The cutter includes a serrated annular cutting edge formed on a distal edge of the cutter and a recessed bowl extending radially inwards from the annular cutting edge to a center of the cutter. The recessed bowl has a first curvature. The cutter further includes a plurality of grinding segments extending inwardly from the distal edge within the bowl. Each of the plurality of segments has a second curvature that is different from the first curvature.

Atherectomy catheter with serrated cutter

An atherectomy catheter for use in a vessel includes an elongate catheter body and an annular cutter. The elongate catheter body includes a fixed jog section with a pre-set curvature and a flexible section that has a greater flexibility than a remainder of the elongate catheter body. The fixed jog section and flexible section are formed of a frame including a plurality of circumferential slits therein. Also described herein is an atherectomy catheter for use in a vessel includes an elongate catheter body, an annular cutter, and an s-shaped curved portion in the elongate catheter body. The curved portion includes a frame having a longitudinal proximal spine and a longitudinal distal spine. The longitudinal proximal spine is positioned approximately 180 degrees away from the longitudinal distal spine.

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Redwood City, CA, United States of America

Vincent Yeh