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11.发明申请公开(公告)号：US20180078300A1
公开(公告)日：2018-03-22
申请号：US15715601
申请日：2017-09-26
Inventor： Saurav Paul , Kedar Ravindra Belhe , Hong Cao , Riki Thao , James A. Hassett
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 provides indication to the physician, via electrode guidance instrumentation, concerning the electrical coupling of an electrode, such as an ablative or mapping electrode, with a patient. The output can be provided to the physician via an output device incorporated into the handle set of the electrode catheter. For example, a visual, audio or mechanical output can be provided via the handle set. Additionally or alternatively, the output can be provided to the physician via a navigation system. 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.
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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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公开(公告)号：US20160220298A1
公开(公告)日：2016-08-04
申请号：US15013065
申请日：2016-02-02
Inventor： Saurav Paul , Hong Cao , Kedar R. Belhe , Riki Thao
IPC: A61B18/12
CPC classification number: A61B18/1206 , A61B5/0538 , A61B18/1492 , A61B2018/00357 , A61B2018/00577 , A61B2018/00732 , A61B2018/00869 , A61B2018/00875 , A61B2018/124 , A61B2018/128
Abstract: An electrode catheter and a method for assessing electrode-tissue contact and coupling are disclosed. An exemplary electrode catheter comprises an electrode adapted to apply electrical energy. A measurement circuit is adapted to measure impedance between the electrode and ground as the electrode approaches a target tissue. A processor determines a contact and coupling condition for the target tissue based at least in part on reactance of the impedance measured by the measurement circuit. In another exemplary embodiment, the electrode catheter determines the contact and coupling condition based at least in part on a phase angle of the impedance.
Abstract translation: 公开了电极导管和用于评估电极组织接触和耦合的方法。 示例性电极导管包括适于施加电能的电极。 测量电路适于在电极接近目标组织时测量电极和地面之间的阻抗。 处理器至少部分地基于由测量电路测量的阻抗的电抗来确定目标组织的接触和耦合条件。 在另一示例性实施例中，电极导管至少部分地基于阻抗的相位角确定接触和耦合条件。
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14.发明授权Method for displaying catheter electrode-tissue contact in electro-anatomic mapping and navigation system 有权在电解剖映射和导航系统中显示导管电极组织接触的方法公开(公告)号：US08755860B2
公开(公告)日：2014-06-17
申请号：US13745162
申请日：2013-01-18
Inventor： Sauray Paul , Hong Cao
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：US20130338663A1
公开(公告)日：2013-12-19
申请号：US13902422
申请日：2013-05-24
Inventor： Hong Cao , Xiaoping Guo , Yitzhak I. Shai , Michael Yang , Kedar Ravindra Belhe , Saurav Paul , Riki Chou Thao
IPC: A61B18/14
CPC classification number: A61B18/1492 , A61B2018/00005 , A61B2018/00357
Abstract: An ablation catheter is provided for ablating internal tissue of a patient. The catheter includes a distal end that is adapted to be inserted into a body cavity relative to a desired location therein (e.g., within the heart). An ablation electrode is connected relative to the distal end of the catheter for providing ablation energy to patient tissue. A heat sink is provided that is in thermal contact with the ablation electrode. The heat sink, in addition to being in thermal contact with the ablation electrode, is electrically isolated from the ablation electrode. This allows the heat sink to conduct heat away from the ablation electrode without dissipating electrical energy from the electrode. In this regard, the heat sink may prevent build-up of excess heat within the electrode that may result in blood coagulation and/or tissue charring.
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Patent Agency Ranking
公开(公告)号：US10912607B2
公开(公告)日：2021-02-09
申请号：US15489608
申请日：2017-04-17
Inventor： Huisun Wang , Jeremy D. Dando , Hong Cao
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：US10182860B2
公开(公告)日：2019-01-22
申请号：US15013065
申请日：2016-02-02
Inventor： Saurav Paul , Hong Cao , Kedar R. Belhe , Riki Thao
Abstract: An electrode catheter and a method for assessing electrode-tissue contact and coupling are disclosed. An exemplary electrode catheter comprises an electrode adapted to apply electrical energy. A measurement circuit is adapted to measure impedance between the electrode and ground as the electrode approaches a target tissue. A processor determines a contact and coupling condition for the target tissue based at least in part on reactance of the impedance measured by the measurement circuit. In another exemplary embodiment, the electrode catheter determines the contact and coupling condition based at least in part on a phase angle of the impedance.
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公开(公告)号：US20170035491A1
公开(公告)日：2017-02-09
申请号：US15297358
申请日：2016-10-19
Inventor： Saurav Paul , Riki Thao , Hong Cao , Kedar Ravindra Belhe
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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19.发明授权Ablation catheter with thermally mediated catheter body for mitigating blood coagulation and creating larger lesion 有权消融导管与热介导的导管体减轻血液凝固和创造更大的病变公开(公告)号：US08734442B2
公开(公告)日：2014-05-27
申请号：US13902422
申请日：2013-05-24
Inventor： Hong Cao , Xiaoping Guo , Yitzhak I. Shai , Michael Yang , Kedar R. Belhe , Saurav Paul , Riki C. Thao
IPC: A61B18/14
CPC classification number: A61B18/1492 , A61B2018/00005 , A61B2018/00357
Abstract: An ablation catheter is provided for ablating internal tissue of a patient. The catheter includes a distal end that is adapted to be inserted into a body cavity relative to a desired location therein (e.g., within the heart). An ablation electrode is connected relative to the distal end of the catheter for providing ablation energy to patient tissue. A heat sink is provided that is in thermal contact with the ablation electrode. The heat sink, in addition to being in thermal contact with the ablation electrode, is electrically isolated from the ablation electrode. This allows the heat sink to conduct heat away from the ablation electrode without dissipating electrical energy from the electrode. In this regard, the heat sink may prevent build-up of excess heat within the electrode that may result in blood coagulation and/or tissue charring.
Abstract translation: 提供消融导管以消融患者的内部组织。 该导管包括适于相对于其中的期望位置（例如，在心脏内）插入体腔中的远端。 消融电极相对于导管的远端连接，以向患者组织提供消融能量。 提供与消融电极热接触的散热器。 除了与消融电极热接触之外，散热器与消融电极电隔离。 这允许散热器将热量从消融电极导出，而不会从电极中消耗电能。 在这方面，散热器可以防止在电极内积聚多余的热量，从而导致血液凝固和/或组织烧焦。
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公开(公告)号：US20180271593A1
公开(公告)日：2018-09-27
申请号：US15923489
申请日：2018-03-16
Inventor： Saurav Paul , Harry A. Puryear , Riki Chou Thao , Hong Cao
CPC classification number: A61B18/1492 , A61B18/1206 , A61B2018/00023 , A61B2018/00577 , A61B2018/00875
Abstract: The present invention is directed to bipolar ablation systems. A bipolar electrode system for ablation therapy is disclosed, including a pressure-sensitive conducting composite layer and a pair of electrodes in electrical conductive contact or communication with the pressure-sensitive conducting composite layer. Energy (e.g., ablation energy) is delivered via the pressure-sensitive conductive composition when sufficient pressure is applied to transform the pressure-sensitive conductive composite to an electrical conductor. An electrically insulative flexible layer, which may include a passageway for a fill material is also disclosed. In some embodiments, the systems can also be used for targeted delivery of compounds, such as drugs, using a bipolar electrode.
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