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US 2014/0276759 A1Published application
Open irrigated ablation catheter with proximal cooling
AssigneeBoston Scientific Scimed, Inc.
InventorsISAAC J. KIM, MARK D. MIRIGIAN, DESMOND CHEUNG, SIMPLICIO A. VELILLA, ROBERT QUINTOS
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Abstract
Medical devices and methods for using medical devices are disclosed. An example medical device may include an open-irrigated ablation catheter. The open-irrigated ablation catheter may include a catheter body, an electrode tip body with one or more irrigation ports at a distal end, and a proximal insert for providing cooling fluid to a proximal end of the electrode tip body.
Claims20
An open-irrigated ablation catheter system, comprising:
- a catheter body;
- an electrode tip body having a distal end and a proximal end configured for connection to the catheter body, the electrode tip body having a wall defining an open interior region, the wall having one or more irrigation port in fluid communication with the open interior region, wherein the wall is conductive for delivering radio frequency (RF) energy;
- a proximal insert positioned at least partially within the proximal end of the electrode tip body, the proximal insert defining at least one lumen extending therethrough;
- and
- a fluid diverting member spaced from a distal end of the lumen, the fluid diverting member extending across at least a portion of the lumen such that at least a portion of fluid flowing distally through the lumen impacts the fluid diverting member and is diverted towards the wall before flowing into the interior region and out through the one or more irrigation port.
2 more elements
An ablation catheter system, comprising:
- a catheter body including a proximal portion and a distal portion defining a distal end and a lumen extending therethrough;
- an electrode tip body having a wall defining an open interior region, the body including a proximal portion including an open proximal end, the proximal portion including one or more openings extending through the wall;
- and
- the proximal portion of the electrode tip body is disposed within the lumen at the distal end of the catheter body such that the distal end of the catheter body extends distally of the one or more openings through the wall of the electrode tip body.
1 more element
An open-irrigated ablation catheter system, comprising:
- a catheter body;
- an electrode tip body with a distal end and a proximal end configured for connection to the catheter body, the electrode tip body having a wall defining an open interior region, the electrode tip body including a main body portion and a proximal portion, the main body portion having one or more irrigation port in fluid communication with the open interior region, the proximal portion having one or more openings through the wall, wherein the wall is conductive for delivering radio frequency (RF) energy;
- and
- a proximal insert positioned at least partially within the proximal end of the electrode tip body, the proximal insert including a proximal lip and a main body portion, wherein the main body portion has a diameter less than a diameter of the proximal lip, the proximal insert including at least one lumen extending therethrough, the proximal insert including one or more openings through a sidewall in the main body portion in fluid communication with the at least one lumen;
- wherein the main body portion of the proximal insert is sized to be mounted within the proximal portion of the electrode tip body with the proximal lip extending radially beyond the electrode tip body, substantially aligning the openings in the proximal insert and the openings in the proximal portion of the electrode tip body, wherein the proximal lip is sized to engage an inner surface of a distal portion of the catheter body and define a space between an outer surface of the proximal portion of the electrode tip body and the inner surface of the catheter body such that a portion of cooling fluid flowing through the at least one lumen passes through the openings in the proximal insert and the openings in the proximal portion of the electrode tip body and into the space between the catheter body and the electrode tip body, thereby cooling a region where the catheter body joins the electrode tip body.
2 more elements
Dependencies are inferred from the claim text.