Laser-based devices and methods for renal denervation
AssigneeSt. Jude Medical, Cardiology Division, Inc.
InventorsJoseph Michael Schmitt, Chengyang Xu, Desmond Adler
Life of this patent
Estimating the term…
Abstract
An ablation catheter includes an elongated sheath configured for intravascular usage, and an inner tube disposed within the elongated sheath. The inner tube is rotatable and translatable relative to the sheath. An optical fiber is disposed within the inner tube and extends longitudinally therethrough. A proximal end of the optical fiber is optically coupled to a light source and a distal end of the optical fiber is connected to a beam director configured to focus energy on target tissue inside a blood vessel to ablate the target tissue.
Claims25
An ablation catheter comprising:
- an elongated sheath configured for intravascular usage;
- an inner tube disposed within the elongated sheath, the inner tube being rotatable and translatable relative to the sheath;
- an optical fiber having a proximal end and a distal end, the optical fiber being disposed within the inner tube and extending longitudinally therethrough, the proximal end of the optical fiber being optically coupleable to a light source;
- a beam director coupled to the distal end of the optical fiber;
- and
- a controller configured to focus energy from the light source through the beam director on target tissue of a blood vessel to ablate the target tissue at a depth of 0.5 mm to 2.5 mm from an inner wall of the blood vessel.
An ablation catheter comprising:
- an elongated sheath configured for intravascular usage;
- a plurality of tubes disposed within the elongated sheath and translatable relative to the elongated sheath, the plurality of tubes being resiliently biased outwardly away from the elongated sheath;
- an optical fiber disposed within each of the tubes, each of the optical fibers having a proximal end and a distal end, the proximal end of each of the optical fibers being optically coupleable to a first light source;
- a plurality of beam directors coupled to each of the optical fibers;
- and
- a controller configured to focus energy from the first light source through each of the plurality of beam directors on target tissues of a blood vessel to ablate the target tissues at depths of 0.5 mm to 2.5 mm from an inner wall of the blood vessel.
Dependencies are inferred from the claim text.