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公开(公告)号：US10799176B2
公开(公告)日：2020-10-13
申请号：US14151273
申请日：2014-01-09
Inventor： Riki Thao , Saurav Paul
Abstract: Systems and methods are disclosed for assessing tissue contact, e.g., for mapping, tissue ablation, or other procedures. An exemplary tissue contact sensing system comprises a flexible tip device. At least one piezoelectric sensor is housed within the flexible tip device. The at least one piezoelectric sensor is responsive to contact stress of the flexible tip device by generating electrical signals corresponding to the amount of contact stress. An output device is electrically connected to the at least one piezoelectric sensor. The output device receives the electrical signals for assessing tissue contact by the flexible tip device. Methods for assembling and using the flexible tip device are also disclosed.
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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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Patent Agency Ranking
13.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：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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公开(公告)号：US10688300B2
公开(公告)日：2020-06-23
申请号：US15064664
申请日：2016-03-09
Inventor： Saurav Paul , Troy T. Tegg , Israel A. Byrd , Riki Thao , Harry A. Puryear , Linda Nemec
Abstract: Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.
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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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