High speed chronic total occlusion crossing devices
AssigneeAvinger, Inc.
InventorsHimanshu N. PATEL, John B. SIMPSON, Ryan RADJABI
Life of this patent
Estimating the term…
Abstract
An occlusion crossing device includes an outer shaft, an inner shaft, an optical fiber, and a handle attached to the inner shaft and the outer shaft. The inner shaft extends within the outer shaft. The inner shaft includes a drill tip at a distal end thereof. The optical fiber extends within the inner shaft substantially along a central axis of the inner shaft. The distal tip of the optical fiber is attached to the drill tip. The handle is configured to rotate the inner shaft and drill tip at speeds of greater than 500 rpm.
Claims20
An occlusion crossing device comprising:
- a rotatable drive shaft having a distal end with a drill tip, wherein the drill tip includes a pointed distal end that allows forward drilling through an occlusion within a blood vessel;
- and
- an outer shaft having a lumen that accommodates the drive shaft, the outer shaft removably coupled to the drive shaft such that drive shaft can be removed from the lumen of the outer shaft when the outer shaft is within the blood vessel.
A method of crossing an occlusion, the method comprising:
- inserting a device into a blood vessel having the occlusion therein, the device having a drive shaft within a lumen of an outer shaft, wherein the drive shaft includes a drill tip with a pointed distal end;
- rotating the drive shaft and advancing the device forward such that the pointed distal end of the drill tip drills through the occlusion;
- and
- removing the drive shaft from the outer shaft while the outer shaft is in the blood vessel.
Dependencies are inferred from the claim text.