Circumferential ablation guide wire system and related method of using the same
First Claim
1. A tissue ablation system for treating atrial arrhythmia by ablating a circumferential region of tissue at a location where a pulmonary vein (PV) extends from an atrium of a heart of a subject, said system comprising:
- a guide catheter comprising a shaft having a proximal portion and a distal portion;
a guide wire disposed in said guide catheter shaft having a proximal portion, distal portion and distal tip, said guide wire adapted to travel through said guide catheter to be inserted into the atrium;
an interface member disposed on said guide wire;
a first balloon disposed on said guidewire distally beyond said interface member;
said first balloon adapted to center or align said guide wire in the pulmonary vein (PV) and/or its pulmonary vein ostium (PVO) so that the interface member is coaxially aligned with the pulmonary vein ostium (PVO) to provide optimal coaxial alignment with the pulmonary vein ostium (PVO);
an actuator element disposed on said interface member; and
said interface member to be positioned to center and/or align said guide wire, said interface member and/or actuator element in the pulmonary vein (PV) and/or it'"'"'s pulmonary vein ostium (PVO) so that the interface member and/or actuator element is coaxially aligned with the pulmonary vein ostium (PVO) to provide optimal coaxial alignment with the pulmonary vein ostium (PVO).
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Accused Products
Abstract
Device and method significantly that improves the safety and procedural success of the existing art by being able to be less traumatic to vascular tissue, improving atrial contact with the ablation surface, improving positioning and geometrical precision of the ablation pattern, improving steerability and deliverability of the ablation device and by improving localization and geometric precision of the ablation device. The risk of pulmonary vein fibrosis/stenosis will also be substantially lowered. Finally, expansion of the eligible atrial fibrillation population will inherently increase due to the improved components and methods of the present invention.
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Citations
60 Claims
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1. A tissue ablation system for treating atrial arrhythmia by ablating a circumferential region of tissue at a location where a pulmonary vein (PV) extends from an atrium of a heart of a subject, said system comprising:
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a guide catheter comprising a shaft having a proximal portion and a distal portion; a guide wire disposed in said guide catheter shaft having a proximal portion, distal portion and distal tip, said guide wire adapted to travel through said guide catheter to be inserted into the atrium; an interface member disposed on said guide wire; a first balloon disposed on said guidewire distally beyond said interface member;
said first balloon adapted to center or align said guide wire in the pulmonary vein (PV) and/or its pulmonary vein ostium (PVO) so that the interface member is coaxially aligned with the pulmonary vein ostium (PVO) to provide optimal coaxial alignment with the pulmonary vein ostium (PVO);an actuator element disposed on said interface member; and said interface member to be positioned to center and/or align said guide wire, said interface member and/or actuator element in the pulmonary vein (PV) and/or it'"'"'s pulmonary vein ostium (PVO) so that the interface member and/or actuator element is coaxially aligned with the pulmonary vein ostium (PVO) to provide optimal coaxial alignment with the pulmonary vein ostium (PVO). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A tissue ablation system for treating atrial arrhythmia by ablating a circumferential region of tissue at a location where a pulmonary vein (PV) extends from an atrium of a heart of a subject, said system comprising:
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a guide catheter comprising a shaft having a proximal portion and a distal portion; a guide wire disposed in said guide catheter shaft having a proximal portion, distal portion and distal tip, said guide wire adapted to travel through said guide catheter to be inserted into the atrium; an interface member disposed on said guide wire; a first balloon disposed on said guidewire distally beyond said interface member, said first balloon comprises distal end, distal portion, proximal end and proximal portion; said non-compliant portion being located on said proximal portion of said first balloon, said proximal portion having a desired/required radius that may vary along its continuum; said non-compliance portion is adapted to center or align said guide wire in the pulmonary vein (PV) and/or its pulmonary vein ostium (PVO) so that the interface member is coaxially aligned with the pulmonary vein ostium (PVO) to provide optimal coaxial alignment with the pulmonary vein ostium (PVO); and an actuator element disposed on said interface member. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. The system of claim 442, wherein at least a portion of said proximal portion of said first balloon comprises a neck or flair.
Specification