Helical-shaped ablation catheter and methods of use
First Claim
Patent Images
1. An ablation catheter comprising:
- a flexible shaft having a proximal end and a distal end;
a pull wire continuously attached along a portion of a circumference of the distal end of the flexible shaft to a pull ring such that a distal portion of the flexible shaft is configured to form a helical configuration upon tensioning of the pull wire; and
at least one electrode coupled to the flexible shaft at the distal end.
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Abstract
The present disclosure provides ablation catheters that are constructed such that they may be inserted into the body and into a target blood vessel in a linear conformation and subsequently changed into a helical conformation using a pull wire secured to the ablation catheter prior to an ablation procedure to allow electrodes present on the ablation catheter to contact the wall of the blood vessel. After the ablation is complete, the helical-shaped ablation catheter may be returned to its linear conformation by reversing the tensioned pull wire for extraction from the body.
118 Citations
18 Claims
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1. An ablation catheter comprising:
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a flexible shaft having a proximal end and a distal end; a pull wire continuously attached along a portion of a circumference of the distal end of the flexible shaft to a pull ring such that a distal portion of the flexible shaft is configured to form a helical configuration upon tensioning of the pull wire; and at least one electrode coupled to the flexible shaft at the distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of manufacturing an ablation catheter, the method comprising:
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continuously attaching a pull wire along a portion of a circumference of a distal end of a flexible shaft to a pull ring such that a distal portion of the flexible shaft is configured to form a helical configuration upon tensioning of the pull wire; and coupling at least one electrode to the flexible shaft at the distal end. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of ablating tissue, the method comprising:
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inserting a flexible shaft into a patient wherein the flexible shaft comprises a proximal end and a distal end, a pull wire continuously attached along a portion of a circumference of the distal end of the flexible shaft to a pull ring such that a distal portion of the flexible shaft is configured to form a helical configuration upon tensioning of the pull wire, and at least one electrode coupled to the flexible shaft at the distal end; providing tension to the pull wire such that the flexible shaft forms a helical shape; and providing energy to the at least one electrode.
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Specification