Tissue ablation device and method of use
First Claim
1. A tissue ablation device assembly, comprising:
- an elongate body with a proximal end portion and a distal end portion;
an ablation member located at least in part along the distal end portion of the elongate body with a first end portion, a second end portion located proximally of the first end portion, and an ablation element between the first and second end portions;
a first anchor located at least in part along the first end portion wherein the first anchor is adapted to be positioned at least in part within a first pulmonary vein extending from the left atrial wall of a left atrium in a patient in a patient; and
a second anchor located at least in part along the second end portion wherein the second anchor is adapted to be positioned at least in part within a second pulmonary vein extending from the left atrial wall.
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Accused Products
Abstract
A tissue ablation device creates long linear lesions along a body space wall of an animal, and primarily between adjacent pulmonary vein ostia in a left atrial wall. An ablation element includes first and second ends that are bordered by first and second anchors. The anchors are adapted to secure the ablation element ends at predetermined first and second locations along the body space wall such that the ablation element is adapted to ablate an elongate region of tissue between those locations. The anchors may be guidewire tracking members, each including a bore adapted to receive and track over a guidewire, and may anchor within adjacent pulmonary vein ostia when the engaged guidewires are positioned within the respective veins. Stop members may be provided on the guidewires and may be adapted for positioning the relative anchors or for forcing the anchors to fit snugly within the vein ostia. A conduit passageway through the catheter houses a stiffening stylet which may be advanced into the region of the ablation element in order to impart a shape to that element to conform it to a predetermined region of anatomy, or to stiffen the underlying catheter in order to advance the assembly into remote anatomy.
935 Citations
21 Claims
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1. A tissue ablation device assembly, comprising:
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an elongate body with a proximal end portion and a distal end portion;
an ablation member located at least in part along the distal end portion of the elongate body with a first end portion, a second end portion located proximally of the first end portion, and an ablation element between the first and second end portions;a first anchor located at least in part along the first end portion wherein the first anchor is adapted to be positioned at least in part within a first pulmonary vein extending from the left atrial wall of a left atrium in a patient in a patient; and a second anchor located at least in part along the second end portion wherein the second anchor is adapted to be positioned at least in part within a second pulmonary vein extending from the left atrial wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A tissue ablation device assembly for ablating a region of tissue along an atrial wall of an atrium in a patient, comprising:
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an ablation member with first and second end portions and an ablation element between the first and second end portions; a first guidewire; a second guidewire; a first guidewire tracking member located along the first end portion and which is adapted to moveably engage the first guidewire; and a second guidewire tracking member located along the second end portion and which is adapted to moveably engage the second guidewire. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification