Systems and methods for treating hollow anatomical structures

摘要

An apparatus for treating a hollow anatomical structure can include a light delivery device. The light delivery device comprises an optical fiber that is located in a lumen of a shaft suitable for insertion into the hollow anatomical structure and has a fiber tip located proximal of a distal end of the shaft during treatment of the hollow anatomical structure. The apparatus can further include a liquid source for providing a liquid flow over the optical fiber at a predetermined liquid flow rate.

主权项

1. A method of treating a hollow anatomical structure, the method comprising:
inserting a sheath with a distal end into the hollow anatomical structure; inserting an optical fiber into the sheath; positioning a tip of the optical fiber at a firing position anywhere from 2-20 mm proximal of the distal end via a position limiter configured to limit distal movement of the tip of the optical fiber relative to the distal end of the sheath such that the tip of the optical fiber cannot extend distally farther than the firing position, wherein the position limiter comprises a tube at least partially surrounding the optical fiber; emitting light energy from the tip of the optical fiber while the tip is disposed in the sheath proximal of the distal end; and withdrawing the sheath and optical fiber along the hollow anatomical structure while emitting the light energy.