Cool-tip thermocouple including two-piece hub
First Claim
1. An ablation electrode system for use with a source of electrosurgical energy to ablate tissue in a living subject, the ablation electrode system comprising:
- a handle assembly;
a needle electrode assembly supported in and extending from the handle assembly, the needle electrode assembly including;
an outer tube having at least a conductive distal tip, a proximal end portion supported in the handle assembly, and defining a cavity therein; and
an inner tube disposed at least partially within the cavity of the outer tube and having a proximal end portion supported within the handle assembly, the inner tube defining a lumen therein;
a hub assembly supported within the handle assembly and fluidly connected to the needle electrode assembly, the hub assembly including;
an outer shell defining a lumen therein; and
an inner manifold operatively supported in the lumen of the outer shell,the inner manifold and the outer shell being configured and dimensioned so as to define a first chamber and a second chamber therebetween;
wherein the proximal end portion of the inner tube is in fluid communication with the first chamber and the proximal end portion of the outer tube is in fluid communication with the second chamber;
an electrical conduit electrically connected to the outer tube of the needle electrode assembly;
a first fluid conduit fluidly connected to the first chamber; and
a second fluid conduit fluidly connected to the second chamber.
4 Assignments
0 Petitions
Accused Products
Abstract
An ablation electrode system includes a handle assembly; a needle electrode assembly supported in and extending from the handle assembly. The needle electrode assembly includes an outer tube having at least a conductive distal tip and defining a cavity therein; and an inner tube disposed at least partially within the cavity of the outer tube and defining a lumen therein. The ablation electrode assembly includes a hub assembly fluidly connected to the needle electrode assembly. The hub assembly defines a first chamber and a second chamber; wherein the proximal end portion of the inner tube is in fluid communication with the first chamber and the proximal end portion of the outer tube is in fluid communication with the second chamber. The ablation electrode assembly includes a first fluid conduit fluidly connected to the first chamber; and a second fluid conduit fluidly connected to the second chamber.
173 Citations
26 Claims
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1. An ablation electrode system for use with a source of electrosurgical energy to ablate tissue in a living subject, the ablation electrode system comprising:
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a handle assembly; a needle electrode assembly supported in and extending from the handle assembly, the needle electrode assembly including; an outer tube having at least a conductive distal tip, a proximal end portion supported in the handle assembly, and defining a cavity therein; and an inner tube disposed at least partially within the cavity of the outer tube and having a proximal end portion supported within the handle assembly, the inner tube defining a lumen therein; a hub assembly supported within the handle assembly and fluidly connected to the needle electrode assembly, the hub assembly including; an outer shell defining a lumen therein; and an inner manifold operatively supported in the lumen of the outer shell, the inner manifold and the outer shell being configured and dimensioned so as to define a first chamber and a second chamber therebetween;
wherein the proximal end portion of the inner tube is in fluid communication with the first chamber and the proximal end portion of the outer tube is in fluid communication with the second chamber;an electrical conduit electrically connected to the outer tube of the needle electrode assembly; a first fluid conduit fluidly connected to the first chamber; and a second fluid conduit fluidly connected to the second chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An ablation electrode system for use with a source of electrosurgical energy to ablate tissue in a living subject, the ablation electrode system comprising:
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a handle assembly; a needle electrode assembly supported in and extending from the handle assembly, the needle electrode assembly including; an outer tube having at least a conductive distal tip, a proximal end portion supported in the handle assembly, and defining a cavity therein; and an inner tube disposed at least partially within the cavity of the outer tube and having a proximal end portion supported within the handle assembly, the inner tube defining a lumen therein; a hub assembly supported within the handle assembly and fluidly connected to the needle electrode assembly, the hub assembly defining a first chamber and a second chamber;
wherein the proximal end portion of the inner tube is in fluid communication with the first chamber and the proximal end portion of the outer tube is in fluid communication with the second chamber;an electrical conduit electrically connected to the outer tube of the needle electrode assembly; a first fluid conduit fluidly connected to the first chamber; and a second fluid conduit fluidly connected to the second chamber. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An ablation system for ablating tissue in a living subject, the ablation system comprising:
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an ablation electrode system comprising; a needle electrode assembly including; an outer tube having at least a conductive distal tip and defining a cavity therein; and an inner tube disposed at least partially within the cavity of the outer tube and defining a lumen therein a hub assembly fluidly connected to the needle electrode assembly, the hub assembly defining an enlarged first chamber and an enlarged second chamber;
wherein a proximal end portion of the inner tube is in fluid communication with the first chamber and a proximal end portion of the outer tube is in fluid communication with the second chamber;a source of electrosurgical energy; a source of fluid; an electrical conduit electrically interconnecting the outer tube of the needle electrode assembly and the source of electrosurgical energy; a first fluid conduit fluidly interconnecting the source of fluid and the first chamber; and a second fluid conduit fluidly connected to the second chamber, wherein the hub assembly includes a shell and a manifold disposed within the shell, wherein the first chamber and the second chamber are defined by spaces between the shell and the manifold.
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Specification