Ostial renal nerve ablation
First Claim
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.
1 Assignment
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Accused Products
Abstract
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.
1507 Citations
20 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of ablating a perivascular tissue, comprising:
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positioning an elongated shaft in a first vessel lumen of a first vessel, where the elongated shaft includes a distal end and a proximal end; and heating a perivascular tissue at a target area adjacent a second vessel with a thermal element positioned in the first vessel at the distal end of the elongated shaft. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An ablation method using a catheter having an elongated shaft with a distal end and a proximal end, a guide wire extending through the elongated shaft, and at least one thermal element connected to an expandable feature positioned adjacent the distal end of the elongated shaft, the method comprising:
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positioning the distal end of the elongated shaft and the thermal element in a first vessel; expanding the expandable feature to position the thermal element adjacent an ostium between the first vessel and a second vessel; and conveying energy from the thermal element positioned in the first vessel through the ostium and a perivascular tissue adjacent the second vessel. - View Dependent Claims (17, 18, 19, 20)
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Specification