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21.发明授权Ablation catheter electrode having multiple thermal sensors and method of use 有权消融导管电极具有多个热传感器和使用方法公开(公告)号：US08845633B2
公开(公告)日：2014-09-30
申请号：US13913613
申请日：2013-06-10
Inventor： Huisun Wang , Hong Cao , Jeremy D. Dando
CPC classification number: A61B18/1492 , A61B18/14 , A61B2018/00011 , A61B2018/00023 , A61B2018/00577 , A61B2018/00797 , A61B2018/00815 , A61B2018/00821 , Y10T29/49117
Abstract: The invention relates to electrodes used in ablation catheter devices, where the electrodes contain two or more thermal sensors at different positions within the electrode that are capable of detecting temperature differences along the external surface of the electrode. In preferred embodiments, the thermal sensors are separated by one or more thermal insulating members and the thermal sensors are positioned near the external surface of the electrode at about the same distance from the end of the electrode, so that temperature measurements can indicate the position of the electrode with respect to the tissue desired to be ablated.
Abstract translation: 本发明涉及消融导管装置中使用的电极，其中电极在电极内的不同位置包含能够检测沿着电极外表面的温度差的两个或多个热传感器。 在优选实施例中，热传感器被一个或多个绝热构件隔开，并且热传感器位于与电极端部大约相同距离处的电极的外表面附近，使得温度测量可以指示位置 电极相对于希望烧蚀的组织。
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Patent Agency Ranking
公开(公告)号：US20140257282A1
公开(公告)日：2014-09-11
申请号：US14204598
申请日：2014-03-11
Inventor： Huisun Wang , Jeremy D. Dando , Hong Cao
IPC: A61B18/14
CPC classification number: A61B18/1492 , A61B2018/00011 , A61B2018/00029 , A61B2018/00577 , A61B2218/002
Abstract: The invention relates to an ablation catheter which controls the temperature and reduces the coagulation of biological fluids on an electrode of a catheter, prevents the impedance rise of tissue in contact with the electrode, and maximizes the potential energy transfer to the tissue, thereby allowing an increase in the lesion size produced by the ablation. The electrode includes passages positioned to allow saline flow out of an inner cavity of the electrode. This fluid flow is pulsatile to increase turbulence, reducing areas of stagnant flow, and produces a desired cooling effect.
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公开(公告)号：US12082874B2
公开(公告)日：2024-09-10
申请号：US16848599
申请日：2020-04-14
Inventor： Huisun Wang , Christopher J. Geurkink
CPC classification number: A61B18/1492 , A61M25/0069 , A61M25/007 , A61B2017/00084 , A61B2017/00088 , A61B2017/00092 , A61B2018/00011 , A61B2018/00029 , A61B2018/00577 , A61B2018/00702 , A61B2018/00791 , A61B2018/00797 , A61B2018/00809 , A61B2018/00815 , A61B2018/00821 , A61B2218/002 , Y10T29/49826
Abstract: An irrigated ablation catheter includes a shaft and an electrode assembly affixed to a distal end of the shaft. The distal electrode assembly includes a manifold and an ablation electrode affixed together and extending along a center axis. The electrode has a distal irrigation passageway extending therethrough to an opening at a distal tip of the electrode. The opening of the irrigation passageway is offset in distance from the center axis, and allows a thermal sensor such as a thermocouple to be located in a sensor cavity in the electrode on or near the center axis. One variation involves providing a pair of distal irrigation passageways through the electrode where both of the openings of the passageways are offset from the center axis. The thermal sensor in this variation is located in the sensor cavity substantially on the center axis.
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公开(公告)号：US20240173073A1
公开(公告)日：2024-05-30
申请号：US18534123
申请日：2023-12-08
Inventor： Huisun Wang , Sacha C. Hall
CPC classification number: A61B18/1492 , A61B2018/00035 , A61B2018/00101 , A61B2018/00791 , A61B2018/1472
Abstract: The invention relates to ablation catheter electrodes that solve in part the problem of tissue charring during radiofrequency ablation. The electrode assemblies of the invention include passageways that lead from the inner lumen of the assemblies to the surface of the assemblies, wherein the passageways have a smooth conjunction with the outer surface. These smooth conjunctions comprise rounded edges or are chamfered. In the case of rounded edges, the rounded edges can have fixed radii of about 0.002″ to about 0.008″.
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公开(公告)号：US20200305971A1
公开(公告)日：2020-10-01
申请号：US16848599
申请日：2020-04-14
Inventor： Huisun Wang , Christopher J. Geurkink
Abstract: An irrigated ablation catheter includes a shaft and an electrode assembly affixed to a distal end of the shaft. The distal electrode assembly includes a manifold and an ablation electrode affixed together and extending along a center axis. The electrode has a distal irrigation passageway extending therethrough to an opening at a distal tip of the electrode. The opening of the irrigation passageway is offset in distance from the center axis, and allows a thermal sensor such as a thermocouple to be located in a sensor cavity in the electrode on or near the center axis. One variation involves providing a pair of distal irrigation passageways through the electrode where both of the openings of the passageways are offset from the center axis. The thermal sensor in this variation is located in the sensor cavity substantially on the center axis.
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公开(公告)号：US09622814B2
公开(公告)日：2017-04-18
申请号：US14204598
申请日：2014-03-11
Inventor： Huisun Wang , Jeremy D. Dando , Hong Cao
CPC classification number: A61B18/1492 , A61B2018/00011 , A61B2018/00029 , A61B2018/00577 , A61B2218/002
Abstract: The invention relates to an ablation catheter which controls the temperature and reduces the coagulation of biological fluids on an electrode of a catheter, prevents the impedance rise of tissue in contact with the electrode, and maximizes the potential energy transfer to the tissue, thereby allowing an increase in the lesion size produced by the ablation. The electrode includes passages positioned to allow saline flow out of an inner cavity of the electrode. This fluid flow is pulsatile to increase turbulence, reducing areas of stagnant flow, and produces a desired cooling effect.
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