Catheter having reduced force concentration at tissue contact site
First Claim
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1. A mapping and ablation catheter, comprising:
- an elongate shaft including a proximal portion and a distal portion, the distal portion of the elongate shaft comprising a plurality of segments including a proximal-most segment, a distal-most segment, and one or more intermediate segments disposed between the proximal-most and distal-most segments;
a diagnostic electrode located on the distal-most segment;
an ablation electrode located on the distal portion of the elongate shaft proximally of the distal-most segment, the ablation electrode comprising a patch electrode forming a partial ring; and
an atraumatic tip located at a distal end of the distal-most segment;
wherein at least one of the one or more intermediate segments comprise a curved section of the elongate shaft, andwherein the ablation electrode is located on the curved section.
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Abstract
A mapping and ablation catheter that reduces the risk of cardiac perforation during diagnostic and therapeutic procedures. The catheter comprises an elongate shaft including a proximal and distal portions, where the distal portion comprises a plurality of segments including a proximal-most segment, a distal-most segment and one or more intermediate segments between the proximal-most and distal-most segments. The catheter can include a diagnostic electrode in the distal most segment, an atraumatic tip located at the distal end of the distal-most segment, and an ablation electrode located in a segment proximal to the distal-most segment.
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Citations
18 Claims
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1. A mapping and ablation catheter, comprising:
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an elongate shaft including a proximal portion and a distal portion, the distal portion of the elongate shaft comprising a plurality of segments including a proximal-most segment, a distal-most segment, and one or more intermediate segments disposed between the proximal-most and distal-most segments; a diagnostic electrode located on the distal-most segment; an ablation electrode located on the distal portion of the elongate shaft proximally of the distal-most segment, the ablation electrode comprising a patch electrode forming a partial ring; and an atraumatic tip located at a distal end of the distal-most segment; wherein at least one of the one or more intermediate segments comprise a curved section of the elongate shaft, and wherein the ablation electrode is located on the curved section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A mapping and ablation catheter, comprising:
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an elongate shaft including a proximal portion and a distal portion, the distal portion of the elongate shaft comprising a plurality of segments including, a proximal-most longitudinal segment, a distal-most longitudinal segment, and a curved segment disposed between the proximal-most and distal-most longitudinal segments; a diagnostic electrode located on the distal-most longitudinal segment; an ablation ring electrode located on the curved segment at an apex of the curved segment; and are atraumatic tip located at a distal end of the distal-most longitudinal segment. - View Dependent Claims (14, 15, 16)
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17. A mapping and ablation catheter, comprising:
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an elongate shaft including a proximal portion and a distal portion, the distal portion of the elongate shaft comprising a plurality of segments including a proximal-most segment, a distal-most segment, and a curved segment connecting the proximal-most and distal-most segments, wherein said curved segment includes a single curve pre-formed into a curvature plane, said proximal-most segment is generally straight, and said distal-most segment is generally straight; a ring electrode located on the curved segment; an irrigation port disposed on the ring electrode; and are atraumatic tip located at a distal end of the distal-most segment. - View Dependent Claims (18)
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Specification