Mapping and ablation catheter
First Claim
1. A catheter comprising:
- an elongated flexible body having a distal region and at least one lumen extending therethrough;
a tip electrode mounted on the distal region, the tip electrode having;
an exposed distal region having proximal and distal ends;
an isolated region proximal to the exposed distal region, wherein the isolated region is outside the flexible body and has an outer surface provided with an electrically insulating and thermally conductive layer;
a stem region proximal to the isolated region, wherein the stem region extends into the distal region of the flexible body; and
a second electrode mounted on the isolated region of the tip electrode.
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Accused Products
Abstract
A catheter for mapping and ablating comprises an elongated flexible body having a distal region and at least one lumen extending therethrough. A tip electrode is mounted on the distal region. The tip electrode has an exposed distal region having proximal and distal ends and an isolated region proximal to the exposed distal region. The isolated region has an outer surface provided with an electrically insulating and thermally conductive layer. A second electrode is mounted on the isolated region of the tip electrode. This mapping and ablation electrode arrangement provides discrete recording of electrical signals due to the relatively small exposed distal region while allowing the creating of larger lesions due to the large thermal mass provided by the isolated region.
280 Citations
39 Claims
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1. A catheter comprising:
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an elongated flexible body having a distal region and at least one lumen extending therethrough;
a tip electrode mounted on the distal region, the tip electrode having;
an exposed distal region having proximal and distal ends;
an isolated region proximal to the exposed distal region, wherein the isolated region is outside the flexible body and has an outer surface provided with an electrically insulating and thermally conductive layer;
a stem region proximal to the isolated region, wherein the stem region extends into the distal region of the flexible body; and
a second electrode mounted on the isolated region of the tip electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 34, 35)
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15. A catheter comprising:
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an elongated flexible body having proximal and distal ends and at least one lumen extending therethrough;
a tip section comprising a flexible tubing that is more flexible than the catheter body mounted at the distal end of the catheter body, the flexible tubing having proximal and distal ends and at least one lumen extending therethrough;
a tip electrode mounted on the distal end of the flexible tubing, the tip electrode having;
an exposed distal region having proximal and distal ends;
an isolated region proximal the distal region, wherein the isolated region is outside the flexible tubing of the tip section and has an outer surface provided with an electrically insulating and thermally conductive layer;
a stem region proximal to the isolated region, wherein the stem region extends into the distal end of the flexible tubing of the tip section; and
a ring electrode mounted on the isolated region of the tip electrode. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 36, 37)
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29. A catheter comprising:
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an elongated flexible body having a distal region and at least one lumen extending therethrough;
a tip electrode mounted on the distal region, the tip electrode having;
an exposed distal region having proximal and distal ends, a length and an outer diameter, wherein the ratio of the length to the outer diameter ranges from about 0.8;
1 to about 1.2;
1;
an isolated region proximal the exposed distal region, wherein the isolated region is outside the flexible body and has an outer surface provided with an electrically insulating and thermally conductive layer;
a stem region proximal to the isolated region, wherein the stem region extends into the distal region of the flexible body. - View Dependent Claims (30, 31, 32, 33, 38, 39)
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Specification