Device and Method of Ablative Cutting with Helical Tip

摘要

Catheter devices for ablation and removal of occlusions from blood vessels and methods of using the same are provided. Catheter devices are useful to ablate, cut, dislodge, and otherwise remove occlusions within a blood vessel that may limit or prevent proper circulation. Distal features of the catheter devices comprise arrangements of laser ablative or mechanical cutting features that generally provide enhanced surface areas and cutting functions. Spiral or helical arrangements are provided to aid in cutting operations.

主权项

1. A catheter assembly comprising.
a catheter having a distal portion and an orifice for a lumen extending proximally from the distal portion, wherein the distal portion comprises a distal tip having an extending helical configuration; and a plurality of optical fibers located within the cutting instrument, the optical fibers having distal ends located within the extending helical configuration of the distal tip.