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公开(公告)号：US10327843B2
公开(公告)日：2019-06-25
申请号：US15377764
申请日：2016-12-13
Inventor： Huisun Wang , Hong Cao , Jeremy D. Dando
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.
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公开(公告)号：US09730750B2
公开(公告)日：2017-08-15
申请号：US14254324
申请日：2014-04-16
Inventor： Saurav Paul , Hong Cao
CPC classification number: A61B18/1233 , A61B18/1206 , A61B18/1492 , A61B2018/00678 , A61B2018/00702 , A61B2018/00779 , A61B2018/00791 , A61B2018/00827 , A61B2018/00869 , A61B2018/00892 , A61B2090/065
Abstract: Disclosed herein are ablation systems and methods for providing feedback on lesion formation in real-time. The methods and systems assess absorptivity of tissue based on a degree of electric coupling or contact between an ablation electrode and the tissue. The absorptivity can then be used, along with other information, including, power levels and activation times, to provide real-time feedback on the lesions being created. Feedback may be provided, for example, in the form of estimated lesion volumes and other lesion characteristics. The methods and systems can provide estimated treatment times to achieve a desired lesion characteristic for a given degree of contact, as well as depth of a lesion being created. The degree of contact may be measured using different techniques, including the phase angle techniques and a coupling index.
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公开(公告)号：US20140066926A1
公开(公告)日：2014-03-06
申请号：US14076400
申请日：2013-11-11
Inventor： Saurav Paul , Riki Chou Thao , Hong Cao , Kedar Ravindra Belhe
IPC: A61B18/14
CPC classification number: A61B18/14 , A61B18/16 , A61B2018/00577 , A61N1/0464 , A61N1/05
Abstract: An electrode head is disclosed that utilizes electrically conductive or dissipative fabric to exchange electrical energy with tissue. This electrode head may be used for any appropriate application, such as a catheter electrode, a return electrode, or the like. Any appropriate function may be provided by this electrode head, such as tissue ablation, tissue mapping, or providing an electrical ground.
Abstract translation: 公开了一种使用导电或耗散织物以与组织交换电能的电极头。 该电极头可用于任何适当的应用，例如导管电极，返回电极等。 可以通过该电极头提供任何适当的功能，例如组织消融，组织贴图或提供电接地。
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公开(公告)号：US20190053848A1
公开(公告)日：2019-02-21
申请号：US16117706
申请日：2018-08-30
Inventor： Hong Cao , Riki Thao , Saurav Paul
Abstract: A catheter assembly for assessing contact between the catheter assembly and tissue is disclosed. The assembly includes a catheter shaft and a pressure sensitive conductive composite member whose electrical resistance varies with pressure applied to the catheter assembly. The assembly also includes at least one measurement terminal to permit the measurement of changes in the electrical characteristics of the pressure sensitive conductive composite member. The assembly may optionally include a measurement device to measure resistance, impedance and/or other electrical characteristics. The assembly may utilize a reference electrode secured to the patient's tissue, which permits the measurement device to measure changes between the reference electrode and the at least one measurement terminal. Optionally, the assembly may include a conductive outer layer. Also disclosed are sensor assemblies, contact sensor, methods of contact sensing, and methods of manufacturing relating to the use of pressure sensitive conductive composites.
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公开(公告)号：US20170273740A1
公开(公告)日：2017-09-28
申请号：US15489608
申请日：2017-04-17
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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Patent Agency Ranking
公开(公告)号：US09526574B2
公开(公告)日：2016-12-27
申请号：US14501364
申请日：2014-09-30
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.
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7.发明申请Ablation Catheter Electrode having Multiple Thermal Sensors and Method of Use 有权具有多个热传感器的消融导管电极及其使用方法公开(公告)号：US20150100055A1
公开(公告)日：2015-04-09
申请号：US14501364
申请日：2014-09-30
Inventor： Huisun Wang , Hong Cao , Jeremy D. Dando
IPC: A61B18/14
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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公开(公告)号：US20140243813A1
公开(公告)日：2014-08-28
申请号：US14254324
申请日：2014-04-16
Inventor： Saurav Paul , Hong Cao
IPC: A61B18/12
CPC classification number: A61B18/1233 , A61B18/1206 , A61B18/1492 , A61B2018/00678 , A61B2018/00702 , A61B2018/00779 , A61B2018/00791 , A61B2018/00827 , A61B2018/00869 , A61B2018/00892 , A61B2090/065
Abstract: Disclosed herein are ablation systems and methods for providing feedback on lesion formation in real-time. The methods and systems assess absorptivity of tissue based on a degree of electric coupling or contact between an ablation electrode and the tissue. The absorptivity can then be used, along with other information, including, power levels and activation times, to provide real-time feedback on the lesions being created. Feedback may be provided, for example, in the form of estimated lesion volumes and other lesion characteristics. The methods and systems can provide estimated treatment times to achieve a desired lesion characteristic for a given degree of contact, as well as depth of a lesion being created. The degree of contact may be measured using different techniques, including the phase angle techniques and a coupling index.
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9.发明申请公开(公告)号：US20130138099A1
公开(公告)日：2013-05-30
申请号：US13745162
申请日：2013-01-18
Inventor： Saurav Paul , Hong Cao
IPC: A61B18/14
CPC classification number: A61B18/1206 , A61B18/1492 , A61B34/20 , A61B2018/00303 , A61B2018/00357 , A61B2018/00577 , A61B2018/00642 , A61B2018/00666 , A61B2018/00702 , A61B2018/0075 , A61B2018/00755 , A61B2018/00869 , A61B2018/00875 , A61B2090/064 , A61B2090/065
Abstract: An electrode coupling output system associated with an electrode catheter that provides indication to the physician via the navigation system, concerning the electrical coupling of an electrode, such as an ablative or mapping electrode, with a patient. The indication may be provided by changing the color or other display characteristics of the electrode on the navigation system display or by way of providing a waveform indicating the electrode coupling. In this manner, electrode coupling information is provided to a physician in a manner that minimizes physician distraction.
Abstract translation: 与电极导管相关联的电极耦合输出系统，其通过导航系统向医生提供关于电极（例如烧蚀或映射电极）与患者的电耦合的指示。 可以通过改变导航系统显示器上的电极的颜色或其他显示特性或通过提供指示电极耦合的波形来提供指示。 以这种方式，电极耦合信息以最小化医师分心的方式提供给医师。
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公开(公告)号：US20200205881A1
公开(公告)日：2020-07-02
申请号：US16814655
申请日：2020-03-10
Inventor： Saurav Paul , Riki Thao , Hong Cao , Kedar Ravindra Belhe
Abstract: An electrode head is disclosed that utilizes electrically conductive or dissipative fabric to exchange electrical energy with tissue. This electrode head may be used for any appropriate application, such as a catheter electrode, a return electrode, or the like. Any appropriate function may be provided by this electrode head, such as tissue ablation, tissue mapping, or providing an electrical ground.
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