公开(公告)号：US06640120B1

公开(公告)日：2003-10-28

申请号：US09684559

申请日：2000-10-05

申请人： David K. Swanson ,  Anant V. Hegde ,  Anna Hartzog ,  Alan McMillan ,  Dennis O'Brien

发明人： David K. Swanson ,  Anant V. Hegde ,  Anna Hartzog ,  Alan McMillan ,  Dennis O'Brien

IPC分类号： A61B1818

CPC分类号： A61B18/1492 ,  A61B2018/00065 ,  A61B2018/00214 ,  A61B2018/00238 ,  A61B2018/00267 ,  A61B2018/00375 ,  A61B2018/00839

摘要： The present invention relates to a probe assembly for mapping and ablating pulmonary vein tissue and method of using the same. The probe assembly includes an expandable and collapsible basket assembly having multiple splines. One or more of the splines carry one or more electrodes adapted to sense electrical activity in the pulmonary vein tissue. The basket assembly defines an interior, and a microporous expandable and collapsible body is disposed in the interior of the basket assembly and defines an interior adapted to receive a medium containing ions. An internal electrode is disposed within the interior of the body and is adapted to transmit electrical energy to the medium containing ions. The body includes at least one microporous region having a plurality of micropores therein sized to pass ions contained in the medium without substantial medium perfusion therethrough, enabling ionic transport of electrical energy from the internal electrode, through ion-containing medium to an exterior of the body to ablate pulmonary vein tissue. In other aspects of the invention, the microporous body may be replaced by a non-porous expandable and collapsible body that receives a fluid medium for expanding the non-porous body to exclude blood from the electrodes on the splines, or the probe assembly may not include any expandable and collapsible body in the basket assembly interior (one or more electrodes on splines sense electrical activity in the pulmonary vein tissue and ablate the pulmonary vein tissue).

摘要翻译： 本发明涉及用于测定和消融肺静脉组织的探针组件及其使用方法。 探针组件包括具有多个花键的可膨胀和可折叠的篮组件。 一个或多个花键携带一个或多个适于感测肺静脉组织中的电活动的电极。 筐组件限定内部，并且微孔可膨胀和可折叠主体设置在筐组件的内部并且限定适于接收含有离子的介质的内部。 内部电极设置在身体的内部，并且适于将电能传递到包含离子的介质。 主体包括至少一个微孔区域，其中具有多个微孔，其尺寸适于通过包含在介质中的离子而不需要大量介质灌注，从而能够将电能从内部电极通过含离子的介质离子输送到体外 消融肺静脉组织。 在本发明的其它方面，微孔体可以被接收用于膨胀无孔体的流体介质以排除来自花键上的电极的血液的无孔可扩张和可折叠体，或者探针组件可以不 在篮组件内部包括任何可膨胀和可折叠的主体（花键上的一个或多个电极感测肺静脉组织中的电活动并消融肺静脉组织）。