公开(公告)号：US20170312009A1

公开(公告)日：2017-11-02

申请号：US15646914

申请日：2017-07-11

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

Inventor： Saurav Paul ,  Hong Cao

IPC: A61B18/12 ,  A61B18/00 ,  A61B18/14 ,  A61B90/00

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.

公开(公告)号：US20170086920A1

公开(公告)日：2017-03-30

申请号：US15377764

申请日：2016-12-13

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

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.

公开(公告)号：US09474566B2

公开(公告)日：2016-10-25

申请号：US14076400

申请日：2013-11-11

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

Inventor： Saurav Paul ,  Riki Thao ,  Hong Cao ,  Kedar Ravindra Belhe

IPC: A61B18/14 ,  A61N1/05 ,  A61B18/16 ,  A61B18/00 ,  A61N1/04

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。

公开(公告)号：US20140364843A1

公开(公告)日：2014-12-11

申请号：US14279430

申请日：2014-05-16

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

Inventor： Saurav Paul ,  Ravindra Kedar Belhe ,  Hong Cao ,  Chou Thao ,  James A. Hassett

IPC: A61B18/12 ,  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 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.

Abstract translation: 电极耦合输出系统通过电极引导仪器向医师提供关于电极（例如烧蚀或映射电极）与患者的电耦合的指示。 输出可以通过结合到电极导管的手柄组中的输出装置提供给医师。 例如，可以通过手柄组提供视觉，音频或机械输出。 另外或替代地，输出可以经由导航系统提供给医师。 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。

公开(公告)号：US08845633B2

公开(公告)日：2014-09-30

申请号：US13913613

申请日：2013-06-10

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

Inventor： Huisun Wang ,  Hong Cao ,  Jeremy D. Dando

IPC: A61B18/14 ,  A61B18/00

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。

公开(公告)号：US20140257282A1

公开(公告)日：2014-09-11

申请号：US14204598

申请日：2014-03-11

Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.

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.