Ostial renal nerve ablation

摘要

A catheter including an elongated shaft having a distal end and a proximal end, where the catheter includes a thermal element at the distal end thereof. The thermal element may be used in an ablation procedure or other procedure to heat a tissue adjacent a vessel. In some instances, the thermal element may be positioned in a first vessel and may operate to heat tissue adjacent a second vessel or adjacent an ostium between the first vessel and the second vessel. Further, the catheter may include an expandable portion on which the thermal element may be connected or positioned. The expandable portion(s) may comprise a basket or cage, a balloon, a memory shape and formable portion, and/or other mechanical expanders.

主权项

1. An ablation catheter apparatus for inserting into a lumen of a first vessel of a body of a patient where a second vessel extends from the first vessel and forms an ostium with the first vessel, the ablation catheter apparatus comprising:
an elongated member having a distal end with a first terminal end and a proximal end with a second terminal end, where the elongated member has a length measured from the first terminal end to the second terminal end; a guide wire extending substantially the length of the elongated member and extendable through the first terminal end; an electrically conductive wire having a distal end and a proximal end, where the electrically conductive wire extends substantially the length of the elongated member; and a thermal element connected to the distal end of the electrically conductive wire; wherein the thermal element is configured to facilitate ablation of a perivascular tissue adjacent the second vessel from a position within the first vessel.