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192 条记录 (耗时 0.028 秒)

    Electrode structures formed from flexible, porous, or woven materials
    73.
    发明授权
    Electrode structures formed from flexible, porous, or woven materials 失效
    由柔性，多孔或编织材料形成的电极结构

    公开(公告)号：US5879348A

    公开(公告)日：1999-03-09

    申请号：US631577

    申请日：1996-04-12

    申请人： Patrick M. Owens ,  James G. Whayne ,  David K. Swanson ,  Dorin Panescu

    发明人： Patrick M. Owens ,  James G. Whayne ,  David K. Swanson ,  Dorin Panescu

    IPC分类号： A61B18/14 ,  A61N1/06 ,  A61B17/39

    CPC分类号： A61N1/06 ,  A61B18/1492 ,  A61B2018/00065 ,  A61B2018/00113 ,  A61B2018/00214 ,  A61B2018/00267 ,  A61B2018/00839 ,  A61B2018/1253 ,  A61B2018/1472 ,  A61B2218/002

    摘要： Electrode structures are formed from flexible, porous, or woven materials. One such structure is made by forming first and second body sections, each including a peripheral edge. The first and second body sections are joined together about their peripheral edges with a seam, thereby forming a composite structure. Another one of such structures is made by forming a body having a three dimensional shape and opposite open ends, and at least partially closing at least one of the opposite ends by forming a seam. Another one of such structures is formed from a sheet of material having peripheral edges. The sheet is placed on the distal end of a fixture, while the peripheral edges of the sheet are gathered about the proximal end of a fixture, thereby imparting to the sheet a desired shape. At least one pleat is formed to secure the gathered peripheral edges together. The seams or pleats are formed by thermal bonding, or ultrasonic welding, or laser welding, or adhesive bonding, or sewing.

    摘要翻译： 电极结构由柔性，多孔或编织材料形成。 一个这样的结构通过形成第一和第二主体部分而形成，每个主体部分包括周边边缘。 第一和第二主体部分通过接缝围绕其周边边缘连接在一起，从而形成复合结构。 通过形成具有三维形状和相对的开口端的主体，并且通过形成接缝至少部分地闭合相对端中的至少一个来制造另一个这样的结构。 这种结构中的另一个由具有外围边缘的材料片形成。 片材被放置在固定装置的远端，而片材的周边边缘围绕固定装置的近端聚集，从而赋予片材所需的形状。 形成至少一个褶皱以将聚集的周边边缘固定在一起。 接缝或褶皱是通过热粘合或超声波焊接，或激光焊接，粘合或粘合形成的。

    Tissue heating and ablation systems and methods using segmented porous electrode structures
    76.
    发明授权
    Tissue heating and ablation systems and methods using segmented porous electrode structures 失效
    组织加热和消融系统和使用分段多孔电极结构的方法

    公开(公告)号：US5846239A

    公开(公告)日：1998-12-08

    申请号：US634338

    申请日：1996-04-12

    申请人： David K. Swanson ,  Dorin Panescu ,  James G. Whayne ,  Patrick M. Owens ,  Russell B. Thompson

    发明人： David K. Swanson ,  Dorin Panescu ,  James G. Whayne ,  Patrick M. Owens ,  Russell B. Thompson

    IPC分类号： A61N1/05 ,  A61B17/39

    CPC分类号： A61N1/05 ,  A61B18/1492 ,  A61B2018/00238 ,  A61B2018/00357 ,  A61B2018/00791 ,  A61B2018/00839

    摘要： A porous electrode assembly for tissue heating and ablation systems and methods includes a wall having an exterior peripherally surrounding an interior area. The assembly includes a lumen to convey a medium containing ions into the interior area. An element couples the medium within the interior area to a source of electrical energy. According to the invention, the wall includes at least two spaced apart zones. Each zone comprises a porous material sized to pass ions contained in the medium, to thereby enable ionic transport of electrical energy from the source through the medium and porous material to the exterior of the wall. In a preferred embodiment, the at least two zones are spaced apart by a third zone comprising a material that blocks passage of ions contained in the medium.

    摘要翻译： 用于组织加热和消融系统和方法的多孔电极组件包括具有周围围绕内部区域的外部的壁。 组件包括用于将含有离子的介质输送到内部区域中的内腔。 元件将内部区域内的介质耦合到电能源。 根据本发明，壁包括至少两个间隔开的区域。 每个区域包括多孔材料，其尺寸适于通过包含在介质中的离子，从而使得电能从源通过介质和多孔材料离子输送到壁的外部。 在一个优选实施例中，所述至少两个区域间隔开第三区域，所述第三区域包括阻挡介质中包含的离子通过的材料。

    Systems and methods for analyzing biopotential morphologies in heart tissue to locate potential ablation sites
    77.
    发明授权
    Systems and methods for analyzing biopotential morphologies in heart tissue to locate potential ablation sites 失效
    用于分析心脏组织中的生物电位形态以定位潜在消融部位的系统和方法

    公开(公告)号：US5722416A

    公开(公告)日：1998-03-03

    申请号：US393126

    申请日：1995-02-17

    申请人： David K. Swanson ,  Dorin Panescu ,  James G. Whayne

    发明人： David K. Swanson ,  Dorin Panescu ,  James G. Whayne

    IPC分类号： A61B1/005 ,  A61B5/042 ,  A61B5/0452 ,  A61N1/05 ,  A61N1/40 ,  G06F17/00 ,  A61B5/0402

    CPC分类号： A61N1/403 ,  A61B5/0422 ,  A61B5/04525 ,  A61B5/6855 ,  A61B5/6858 ,  A61N1/056 ,  A61B1/0051

    摘要： Systems and methods analyze biopotential morphologies in body tissue. The systems and methods use a template of a biopotential event of known cause in body tissue. The template comprises a plot of variations in biopotentials over time and not a spacial distribution of endocardial surface activation. The systems and methods compare this template to a sample of a biopotential event externally triggered in body tissue. The sample comprises a plot of variations in biopotentials over time and not a spacial distribution of endocardial surface activation. The systems and methods generate an output based upon the comparison. The systems and methods can be used to compare an event-specific template of a cardiac event of known diagnosis to a sample of a paced cardiac event. The comparison yields a matching factor indicating how alike the input sample is to the input template. The systems and methods compare the matching factor to a predetermined value to determine the location of sites that are potentially appropriate for ablation. A matching factor that indicates close similarity between the sample and the template suggests that the pacing site lies close to a region potentially appropriate for ablation to treat the arrhythmia.

    摘要翻译： 系统和方法分析身体组织中的生物电位形态。 系统和方法使用身体组织中已知原因的生物潜在事件的模板。 该模板包括随时间的生物电势的变化图，而不是心内膜表面活化的空间分布。 系统和方法将该模板与身体组织中外部触发的生物潜在事件的样本进行比较。 样品包括生物电势随时间变化的图，而不是心内膜表面活化的空间分布。 系统和方法基于比较产生输出。 系统和方法可用于将已知诊断的心脏事件的事件特定模板与起搏心脏事件的样本进行比较。 比较产生一个匹配因子，表明输入样本与输入模板的相似度。 系统和方法将匹配因子与预定值进行比较，以确定潜在适合于消融的部位的位置。 表明样品和模板之间密切相似的匹配因子表明，起搏部位靠近可能适合消融治疗心律失常的区域。

    Systems and methods for examining heart tissue employing multiple electrode structures and roving electrodes
    78.
    发明授权
    Systems and methods for examining heart tissue employing multiple electrode structures and roving electrodes 失效
    使用多个电极结构和粗纱电极检查心脏组织的系统和方法

    公开(公告)号：US5595183A

    公开(公告)日：1997-01-21

    申请号：US390383

    申请日：1995-02-17

    申请人： David K. Swanson ,  Dorin Panescu ,  James G. Whayne

    发明人： David K. Swanson ,  Dorin Panescu ,  James G. Whayne

    IPC分类号： A61B5/0408 ,  A61B5/0402 ,  A61B5/042 ,  A61B5/0478 ,  A61B5/0492 ,  A61B18/14 ,  A61N1/05 ,  A61N1/362

    CPC分类号： A61B5/6855 ,  A61B5/0422 ,  A61B5/6858 ,  A61N1/056 ,  A61B18/1492 ,  A61B2090/065 ,  A61B2562/0209 ,  A61B2562/043

    摘要： Systems and methods use an array of multiple electrodes supported for operative association with a region of heart tissue, in tandem with a roving second electrode supported for movement relative to the multiple electrode means for operative association with selected, different regions of endocardial tissue within the heart. An analog or digital processing element conditions one of the multiple electrodes and the roving electrode to emit a pacing signal while the other one of the multiple electrodes and the roving electrode records paced electrograms occurring as a result of the pacing signal. A processing element and method input a template of a cardiac event of known diagnosis sensed using the array of multiple electrodes. The processing element and method inputs a sample of a cardiac event acquired by pacing from at least one roving electrode and sensed with the array of multiple electrodes. The processing element and method electronically compare the input sample to the input template and generates an output based upon the comparison. The output can aid the physician in locating potentially appropriate sites for ablation.

    摘要翻译： 系统和方法使用多个电极的阵列，其被支撑用于与心脏组织的区域操作性关联，与被支撑用于相对于多个电极装置移动的粗纱第二电极串联，以与心脏内心脏组织的选定的不同区域有效结合 。 模拟或数字处理元件调节多个电极和粗纱电极之一以发出起搏信号，而多个电极和粗纱电极中的另一个记录起搏电迹作为起搏信号的结果。 处理元件和方法输入使用多个电极阵列感测的已知诊断的心脏事件的模板。 处理元件和方法输入通过起搏从至少一个粗纱电极获取的心脏事件的样本，并用多个电极的阵列感测。 处理元件和方法将输入样本与输入模板进行电子比较，并根据比较生成输出。 输出可以帮助医生定位潜在的适当的消融部位。