公开(公告)号：US08565851B2

公开(公告)日：2013-10-22

申请号：US12533903

申请日：2009-07-31

申请人： Michael Lau ,  Randell Werneth ,  Timothy J. Corvi ,  Sumita Bhola ,  Mark T. Stewart ,  Michel Haïssaguerre ,  Meleze Hocini

发明人： Michael Lau ,  Randell Werneth ,  Timothy J. Corvi ,  Sumita Bhola ,  Mark T. Stewart ,  Michel Haïssaguerre ,  Meleze Hocini

IPC分类号： A61B5/042 ,  A61B18/14 ,  A61N1/05

CPC分类号： A61B5/042 ,  A61B5/6858 ,  A61B18/1492 ,  A61B2018/00214 ,  A61B2018/00839 ,  A61B2018/00898 ,  A61N1/06

摘要： Catheters and methods for obtaining monophasic action potential (“MAP”) electrograms include a flexible catheter body defining a longitudinal axis, and a distal assembly affixed to the catheter body distal end defining a distal tip. The distal assembly has at least three MAP recording electrodes, and at least one reference electrode for determining reference potential. The recording electrodes are each positioned a radial distance from the longitudinal axis in at least three different radial directions, defining a recording geometry substantially having radial symmetry. The reference electrode is a longitudinal distance from the recording geometry. Optional features include a steerable catheter shaft, one or more radio-frequency ablation electrodes, and a dedicated pacing electrode. Different possible embodiments include a dome housing having the recording electrodes in a fixed spatial arrangement, and a distal loop assembly having an array of electrodes on at least three flexible loop elements.

公开(公告)号：US08280477B2

公开(公告)日：2012-10-02

申请号：US12511707

申请日：2009-07-29

申请人： Michael Lau ,  Randell Werneth ,  Timothy J. Corvi ,  Sumita Bhola ,  Mark T. Stewart ,  Michel Haïssaguerre ,  Meleze Hocini

发明人： Michael Lau ,  Randell Werneth ,  Timothy J. Corvi ,  Sumita Bhola ,  Mark T. Stewart ,  Michel Haïssaguerre ,  Meleze Hocini

IPC分类号： A61B5/042 ,  A61B18/14 ,  A61N1/05

CPC分类号： A61B5/042 ,  A61B5/6858 ,  A61B18/1492 ,  A61B2018/00214 ,  A61B2018/00839 ,  A61B2018/00898 ,  A61N1/06

摘要： Catheters and methods for obtaining monophasic action potential (“MAP”) electrograms include a flexible catheter body defining a longitudinal axis, and a distal assembly affixed to the catheter body distal end defining a distal tip. The distal assembly has at least three MAP recording electrodes, and at least one reference electrode for determining reference potential. The recording electrodes are each positioned a radial distance from the longitudinal axis in at least three different radial directions, defining a recording geometry substantially having radial symmetry. The reference electrode is a longitudinal distance from the recording geometry. Optional features include a steerable catheter shaft, one or more radio-frequency ablation electrodes, and a dedicated pacing electrode. Different possible embodiments include a dome housing having the recording electrodes in a fixed spatial arrangement, and a distal loop assembly having an array of electrodes on at least three flexible loop elements.

摘要翻译： 用于获得单相动作电位（MAP）电描记图的导管和方法包括限定纵向轴线的柔性导管主体，以及固定到导管主体远端的远端组件，其限定远端尖端。 远端组件具有至少三个MAP记录电极和用于确定参考电位的至少一个参考电极。 记录电极各自在至少三个不同的径向方向上与纵向轴线径向距离，限定基本上具有径向对称性的记录几何形状。 参考电极是与记录几何形状的纵向距离。 可选功能包括可导向的导管轴，一个或多个射频消融电极和专用起搏电极。 不同的可能实施例包括具有固定空间布置的记录电极的圆顶壳体和在至少三个柔性环形元件上具有电极阵列的远端环组件。