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82 条记录 (耗时 0.077 秒)

    Trans-septal catheter with retention mechanism
    34.
    发明授权
    Trans-septal catheter with retention mechanism 有权
    间隔导管与保留机制

    公开(公告)号：US08096959B2

    公开(公告)日：2012-01-17

    申请号：US11923320

    申请日：2007-10-24

    申请人： Mark T. Stewart ,  David E. Francischelli ,  James R. Skarda

    发明人： Mark T. Stewart ,  David E. Francischelli ,  James R. Skarda

    IPC分类号： A61B17/88

    CPC分类号： A61B17/00234 ,  A61B2017/00252 ,  A61M25/10

    摘要： A trans-septal guide catheter for providing access through the septum separating a first heart chamber from a second heart chamber that includes an elongated guide catheter body extending between guide catheter proximal and distal ends. A distal segment of the guide catheter is adapted to be inserted through the septum to locate the distal segment of the guide catheter within one of the first heart chamber and the second heart chamber. The catheter body encloses a guide catheter lumen adapted to provide access into the one of the first heart chamber and the second heart chamber through a guide catheter lumen proximal end opening and a guide catheter lumen distal end opening. A retention mechanism engages the septum and maintains the distal segment of the guide catheter extending into the one of the first heart chamber and the second heart chamber.

    摘要翻译： 一种反间隔导引导管，用于提供通过将第一心室与第二心室隔开的隔膜的通路，该第二心室包括在引导导管近端和远端之间延伸的细长引导导管主体。 引导导管的远侧部分适于插入穿过隔膜以将引导导管的远侧部分定位在第一心室和第二心室之一内。 导管主体包围引导导管内腔，其适于通过引导导管内腔近端开口和引导导管内腔远端开口提供通向第一心室和第二心室之一的通路。 保持机构接合隔膜并且保持引导导管的远端段延伸到第一心室和第二心室中的一个。

    Ablation catheter and method for isolating a pulmonary vein
    36.
    发明授权
    Ablation catheter and method for isolating a pulmonary vein 失效
    消融导管和隔离肺静脉的方法

    公开(公告)号：US06899711B2

    公开(公告)日：2005-05-31

    申请号：US10414779

    申请日：2003-04-16

    申请人： Mark T. Stewart ,  William J. Flickinger ,  David E. Francischelli ,  Rahul Mehra ,  Xiaoyi Min

    发明人： Mark T. Stewart ,  William J. Flickinger ,  David E. Francischelli ,  Rahul Mehra ,  Xiaoyi Min

    IPC分类号： A61B17/00 ,  A61B18/14

    CPC分类号： A61B18/1492 ,  A61B2017/00044 ,  A61B2017/00243 ,  A61B2017/00867 ,  A61B2018/00214 ,  A61B2018/1407 ,  A61B2018/1435

    摘要： A catheter assembly and method for treatment of cardiac arrhythmia, for example, atrial fibrillation, by electrically isolating a vessel, such as a pulmonary vein, from a chamber, such as the left atrium. The catheter assembly includes a catheter body and at least one electrode. The catheter body includes a proximal portion, an intermediate portion and a distal portion. The intermediate portion extends from the proximal portion and defines a longitudinal axis. The distal portion extends from the intermediate portion and forms a substantially closed loop transverse to the longitudinal axis. The at least one electrode is disposed along the loop. With this configuration, the loop is axially directed into contact with the chamber wall about the vessel ostium. Upon energization, the electrode ablates a continuous lesion pattern about the vessel ostium, thereby electrically isolating the vessel from the chamber.

    摘要翻译： 一种用于治疗心律失常（例如心房颤动）的导管组件和方法，通过诸如左心房的腔室电隔离血管（例如肺静脉）。 导管组件包括导管主体和至少一个电极。 导管主体包括近端部分，中间部分和远端部分。 中间部分从近端部分延伸并且限定纵向轴线。 远侧部分从中间部分延伸并且形成横向于纵向轴线的基本上闭合的环。 沿着环设置至少一个电极。 利用这种构造，环路被轴向地指向与容器孔周围的室壁接触。 在通电时，电极消除围绕血管口的连续病变图案，从而将容器与腔室电隔离。

    Ablation catheter and method for isolating a pulmonary vein
    37.
    发明授权
    Ablation catheter and method for isolating a pulmonary vein 有权
    消融导管和隔离肺静脉的方法

    公开(公告)号：US06773433B2

    公开(公告)日：2004-08-10

    申请号：US10414757

    申请日：2003-04-16

    申请人： Mark T. Stewart ,  William J. Flickinger ,  David E. Francischelli ,  Rahul Mehra ,  Xiaoyi Min

    发明人： Mark T. Stewart ,  William J. Flickinger ,  David E. Francischelli ,  Rahul Mehra ,  Xiaoyi Min

    IPC分类号： A61B1814

    CPC分类号： A61B18/1492 ,  A61B2017/00044 ,  A61B2017/00243 ,  A61B2017/00867 ,  A61B2018/00214 ,  A61B2018/1407 ,  A61B2018/1435

    摘要： A catheter assembly and method for treatment of cardiac arrhythmia, for example, atrial fibrillation, by electrically isolating a vessel, such as a pulmonary vein, from a chamber, such as the left atrium. The catheter assembly includes a catheter body and at least one electrode. The catheter body includes a proximal portion, an intermediate portion and a distal portion. The intermediate portion extends from the proximal portion and defines a longitudinal axis. The distal portion extends from the intermediate portion and forms a substantially closed loop transverse to the longitudinal axis. The at least one electrode is disposed along the loop. With this configuration, the loop is axially directed into contact with the chamber wall about the vessel ostium. Upon energization, the electrode ablates a continuous lesion pattern about the vessel ostium, thereby electrically isolating the vessel from the chamber.

    摘要翻译： 一种用于治疗心律失常（例如心房颤动）的导管组件和方法，通过诸如左心房的腔室电隔离血管（例如肺静脉）。 导管组件包括导管主体和至少一个电极。 导管主体包括近端部分，中间部分和远端部分。 中间部分从近端部分延伸并且限定纵向轴线。 远侧部分从中间部分延伸并且形成横向于纵向轴线的基本上闭合的环。 沿着环设置至少一个电极。 利用这种构造，环路被轴向地指向与容器孔周围的室壁接触。 在通电时，电极消除围绕血管口的连续病变图案，从而将容器与腔室电隔离。

    Steerable catheter
    38.
    发明授权
    Steerable catheter 有权
    导向导管

    公开(公告)号：US07682358B2

    公开(公告)日：2010-03-23

    申请号：US10697486

    申请日：2003-10-30

    申请人： George Gullickson ,  Mark T. Stewart ,  Joseph E. Cardinal ,  Harry A. Puryear ,  Scott G. Klimek ,  James R. Skarda ,  Richard A. Thompson, II ,  Alan L. Carlson

    发明人： George Gullickson ,  Mark T. Stewart ,  Joseph E. Cardinal ,  Harry A. Puryear ,  Scott G. Klimek ,  James R. Skarda ,  Richard A. Thompson, II ,  Alan L. Carlson

    IPC分类号： A61M25/092

    CPC分类号： A61M25/0136

    摘要： A deflection mechanism for selectively inducing a bend in a catheter body includes an elongated deflection wire extending within a deflection lumen of the catheter body and into a handle. A guide track is formed within the handle and a thumb wheel is mounted proximal to the elongated guide track within the handle and supports a pinion gear; the thumb wheel and the pinion gear are adapted to be rotated about a common thumb wheel axis, which extends substantially perpendicular to the longitudinal axis. A rack arm extends obliquely to the longitudinal axis of the handle and includes runners received by the guide track, an attachment point coupling the deflection wire to the rack arm and a linear rack engaging the pinion gear. Rotation of the thumb wheel in a first direction draws the deflection wire proximally through the deflection lumen.

    摘要翻译： 用于选择性地诱导导管主体中的弯曲的偏转机构包括在导管主体的偏转腔内延伸并延伸到手柄中的细长偏转线。 引导轨道形成在手柄内，拇指轮安装在手柄内的细长导轨附近，并支撑小齿轮; 拇指轮和小齿轮适于围绕基本上垂直于纵向轴线延伸的公共拇指轮轴旋转。 齿条臂相对于手柄的纵向轴线倾斜地延伸，并且包括由导轨接收的跑道，将偏转线连接到齿条臂的连接点和与小齿轮啮合的直线齿条。 拇指轮在第一方向的旋转将偏转线向近侧拉出通过偏转内腔。

    Detection of microbubble formation during catheter ablation
    40.
    发明授权
    Detection of microbubble formation during catheter ablation 有权
    导管消融期间微泡形成的检测

    公开(公告)号：US09216050B2

    公开(公告)日：2015-12-22

    申请号：US13460864

    申请日：2012-05-01

    申请人： Catherine R. Condie ,  Marshall L. Sherman ,  Mark T. Stewart

    发明人： Catherine R. Condie ,  Marshall L. Sherman ,  Mark T. Stewart

    IPC分类号： A61B18/12 ,  A61B18/00 ,  A61B18/14

    CPC分类号： A61B18/1206 ,  A61B18/1492 ,  A61B2018/00267 ,  A61B2018/00577 ,  A61B2018/00642 ,  A61B2018/00666 ,  A61B2018/00678 ,  A61B2018/00702 ,  A61B2018/00708 ,  A61B2018/00779 ,  A61B2018/00875 ,  A61B2018/00898

    摘要： A method and system for detecting microbubble formation during a radiofrequency ablation procedure. The method includes measuring an impedance of a pair of electrodes, at least one electrode in the pair of electrodes being coupled to a treatment assembly of a medical device. Radiofrequency ablation energy is transmitted between the pair of electrodes. The transmission of radiofrequency ablation energy between the pair of electrodes is terminated when after a predetermined period of time the measured impedance in either of the electrodes in the pair of electrodes is a predetermined percentage above a measured minimum impedance and a measured power is above a predetermined power threshold. An alert is generated indicating at least one of the formation and release of microbubbles proximate the pair of electrodes.

    摘要翻译： 一种用于在射频消融过程中检测微泡形成的方法和系统。 该方法包括测量一对电极的阻抗，该对电极中的至少一个电极耦合到医疗装置的治疗组件。 射频消融能量在一对电极之间传输。 在一对电极之间的射频消融能量的传输终止，在预定时间段之后，该对电极中的任一个电极中的测量阻抗比测量的最小阻抗高出预定百分比，并且测量的功率高于预定的时间 功率阈值。 产生警报，指示邻近该对电极的微泡的形成和释放中的至少一个。