Catheter with helical electrode
First Claim
Patent Images
1. An invasive probe, comprising:
- an insertion tube having an outer tube surface and an inner tube surface and containing a lumen for providing an irrigation fluid, the insertion tube having a distal portion comprising an interior reservoir in fluid communication with the lumen, the interior reservoir having an interior reservoir surface and being formed between the inner tube surface and the interior reservoir surface, the distal portion having a plurality of longitudinally and circumferentially distributed perforations that extend between the reservoir and the outer tube surface of the tube providing fluid communication between the interior reservoir and the outer tube surface of the insertion tube; and
at least one helical electrode fitted over the distal portion of the insertion tube wherein the helical electrode covers only some of the plurality of perforations thereby leaving a sufficient number of perforations open to provide irrigation fluid around the helical electrode.
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Accused Products
Abstract
An invasive probe includes an insertion tube containing a lumen for providing an irrigation fluid and comprising a distal portion having a plurality of perforations therethrough providing fluid communication between the lumen and an outer surface of the insertion tube. At least one helical electrode is fitted over the distal portion of the insertion tube.
236 Citations
15 Claims
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1. An invasive probe, comprising:
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an insertion tube having an outer tube surface and an inner tube surface and containing a lumen for providing an irrigation fluid, the insertion tube having a distal portion comprising an interior reservoir in fluid communication with the lumen, the interior reservoir having an interior reservoir surface and being formed between the inner tube surface and the interior reservoir surface, the distal portion having a plurality of longitudinally and circumferentially distributed perforations that extend between the reservoir and the outer tube surface of the tube providing fluid communication between the interior reservoir and the outer tube surface of the insertion tube; and at least one helical electrode fitted over the distal portion of the insertion tube wherein the helical electrode covers only some of the plurality of perforations thereby leaving a sufficient number of perforations open to provide irrigation fluid around the helical electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Medical apparatus, comprising:
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a probe, for insertion into a body of a subject, the probe comprising; an insertion tube having an outer tube surface and an inner tube surface and containing a lumen, the insertion tube comprising a distal portion having an interior reservoir in fluid communication with the lumen, the interior reservoir having an interior reservoir surface and being formed between the inner tube surface and the interior reservoir surface, the distal portion having a plurality of longitudinally and circumferentially distributed perforations that extend between the reservoir and the outer surface of the tube, providing fluid communication between the reservoir and the outer tube surface of the insertion tube; and at least one helical electrode fitted over the distal portion of the insertion tube and configured to contact tissue in the body wherein the helical electrode covers only some of the plurality of perforations thereby leaving a sufficient number of perforations open to provide adequate irrigation fluid around the helical electrode; an energy generator, for coupling to the probe so as to supply electrical energy to the at least one helical electrode; and an irrigation pump, for coupling to the lumen so as to supply an irrigation fluid via the lumen and the perforations to the tissue. - View Dependent Claims (14, 15)
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Specification