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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
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.
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公开(公告)号:US20110054465A1
公开(公告)日:2011-03-03
申请号:US12546796
申请日:2009-08-25
申请人: Randell WERNETH , Ricardo ROMAN , Timothy J. CORVI , Betty HU
发明人: Randell WERNETH , Ricardo ROMAN , Timothy J. CORVI , Betty HU
IPC分类号: A61M25/092 , A61B18/18
CPC分类号: A61B18/1492 , A61B5/042 , A61B2017/003 , A61B2017/00323 , A61B2018/00797 , A61B2018/00821 , A61B2018/1407 , A61B2018/1422 , A61B2018/1467 , A61M25/0147 , A61N1/056
摘要: Medical devices, systems, and methods for treating patients with tissue ablation include catheter systems having bi-modal steering mechanisms, which are capable of both linear and loop ablation. In other words, the catheter system may have two different steering modes: two-dimensional and three-dimensional. In the first and second steering modes, the steering actuator may cause one or more portions of the catheter shaft to bend in different planes. A steerable ablation catheter may include treatment elements such as electrodes at its distal end and along the catheter shaft, each of which may map, pace, and ablate.
摘要翻译: 用于治疗患有组织消融的患者的医疗装置,系统和方法包括具有双向转向机构的导管系统,其能够进行线性和环路消融。 换句话说,导管系统可以具有两种不同的转向模式:二维和三维。 在第一和第二转向模式中,转向致动器可导致导管轴的一个或多个部分在不同的平面中弯曲。 可引导的消融导管可以包括治疗元件,例如其远端处的电极和沿着导管轴的每个可以映射,步伐和消融的治疗元件。
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公开(公告)号:US20070208401A1
公开(公告)日:2007-09-06
申请号:US11799191
申请日:2007-05-01
申请人: John Dobak , Juan Lasheras , Randell Werneth
发明人: John Dobak , Juan Lasheras , Randell Werneth
IPC分类号: A61F7/00
CPC分类号: A61B18/02 , A61B2017/00292 , A61B2018/0212 , A61F7/12 , A61F2007/0056 , A61F2007/126 , A61M25/00 , A61M25/0023 , A61M2025/0004 , A61M2025/006 , A61M2205/3606
摘要: An endovascular heat transfer device which can have a smooth exterior surface, or a surface with ridges and grooves. The device can have a plurality of elongated, articulated segments, with each having such a surface. A flexible joint connects adjacent elongated, articulated segments. The flexible joints can be bellows or flexible tubes. An inner lumen is disposed within the heat transfer segments. The inner lumen is capable of transporting a pressurized working fluid to a distal end of the heat transfer element.
摘要翻译: 可以具有光滑的外表面或具有脊和凹槽的表面的血管内传热装置。 该装置可以具有多个细长的关节部分,每个部分具有这样的表面。 柔性接头连接相邻的细长铰接段。 柔性接头可以是波纹管或柔性管。 内腔设置在传热段内。 内腔能够将加压工作流体输送到传热元件的远端。
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公开(公告)号:US20060111701A1
公开(公告)日:2006-05-25
申请号:US10997713
申请日:2004-11-24
IPC分类号: A61B18/14
CPC分类号: A61B18/1492 , A61B2018/0016 , A61B2018/00214 , A61B2018/00267 , A61B2018/00351 , A61B2018/1475
摘要: An atrial ablation catheter with an electrode array particularly adapted to locate and ablate foci of arrhythmia which are required for sustained atrial fibrillation is provided. The array is easily deployed and retracted from the catheter, and presents a proximally oriented electrode array that can be pulled against the septal wall of the left atrium to engage the septal wall.
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公开(公告)号:US06719723B2
公开(公告)日:2004-04-13
申请号:US09731176
申请日:2000-12-06
申请人: Randell Werneth
发明人: Randell Werneth
IPC分类号: A61F712
CPC分类号: A61F7/12 , A61F2007/126
摘要: An apparatus for performing hypothermia of the body of a patient, or of a selected organ, while delivering a medicament to a selected blood vessel. A flexible coaxial catheter is inserted through the vascular system of a patient to place the distal tip of the catheter in a selected artery. A chilled fluid is pumped through an inner supply conduit of the catheter to cool a flexible heat transfer element in the distal tip of the catheter. The heat transfer element cools the blood flowing through the artery distal to the tip of the catheter. The medicament, such as a vaso-dilator, is delivered either separately or mixed with the chilled fluid, through a very small exit port in or near the heat transfer element.
摘要翻译: 一种用于在将药物递送至所选择的血管的同时,对患者或选定器官的身体进行体温过低的装置。 将柔性同轴导管穿过患者的血管系统插入导管的远端以选择动脉。 冷冻流体被泵送通过导管的内部供应管道以冷却导管的远侧末端中的柔性传热元件。 传热元件冷却流过导管末端的动脉的血液。 药物,例如血管扩张器,分开地或与冷冻液体混合,通过传热元件内或附近的非常小的出口。
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公开(公告)号:US20070083195A1
公开(公告)日:2007-04-12
申请号:US11484878
申请日:2006-07-11
IPC分类号: A61B18/14
CPC分类号: A61B18/1492 , A61B2017/00084 , A61B2017/00243 , A61B2018/00214 , A61B2018/00351 , A61B2018/00666 , A61B2018/00898 , A61B2018/1467 , A61B2018/1475
摘要: Devices, systems and methods are disclosed for the ablation of tissue. Embodiments include an ablation catheter that has an array of ablation elements attached to a deployable carrier assembly. The carrier assembly can be constrained within the lumen of a catheter, and deployed to take on an expanded condition. The carrier assembly includes multiple electrodes that are configured to ablate tissue at low power. Additional embodiments include a system that includes an interface unit for delivering one or more forms of energy to the ablation catheter.
摘要翻译: 公开了用于组织消融的装置,系统和方法。 实施例包括消融导管,其具有附接到可展开的载体组件的消融元件阵列。 载体组件可以被限制在导管的内腔中,并且被部署以展开扩张状态。 载体组件包括被配置成以低功率消融组织的多个电极。 另外的实施例包括包括用于将一种或多种形式的能量递送到消融导管的接口单元的系统。
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公开(公告)号:US20060116734A1
公开(公告)日:2006-06-01
申请号:US11333986
申请日:2006-01-17
申请人: John Dobak , Juan Lasheras , Randell Werneth
发明人: John Dobak , Juan Lasheras , Randell Werneth
IPC分类号: A61B18/04
CPC分类号: A61B18/02 , A61B2017/00292 , A61B2018/0212 , A61F7/12 , A61F2007/0056 , A61F2007/126 , A61M25/00 , A61M25/0023 , A61M2025/0004 , A61M2025/006 , A61M2205/3606
摘要: An endovascular heat transfer device which can have a smooth exterior surface, or a surface with ridges and grooves. The device can have a plurality of elongated, articulated segments, with each having such a surface. A flexible joint connects adjacent elongated, articulated segments. The flexible joints can be bellows or flexible tubes. An inner lumen is disposed within the heat transfer segments. The inner lumen is capable of transporting a pressurized working fluid to a distal end of the heat transfer element.
摘要翻译: 可以具有光滑的外表面或具有脊和凹槽的表面的血管内传热装置。 该装置可以具有多个细长的关节部分,每个部分具有这样的表面。 柔性接头连接相邻的细长铰接段。 柔性接头可以是波纹管或柔性管。 内腔设置在传热段内。 内腔能够将加压工作流体输送到传热元件的远端。
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公开(公告)号:US20060106375A1
公开(公告)日:2006-05-18
申请号:US11179332
申请日:2005-07-12
申请人: Randell Werneth , Marshall Sherman , J. Flaherty
发明人: Randell Werneth , Marshall Sherman , J. Flaherty
IPC分类号: A61B18/18
CPC分类号: A61B18/1492 , A61B8/0833 , A61B2017/00106 , A61B2017/00243 , A61B2018/00351 , A61B2018/00702 , A61B2018/00791
摘要: Devices, systems and methods are disclosed for the ablation of tissue and treatment of cardiac arrhythmia. An ablation system includes an ablation catheter that has an array of ablation elements and a location element, an esophageal probe also including a location element, and an interface unit that provides energy to the ablation catheter. The distance between the location elements, determined by calculating means of the system, can be used by the system to set or modify one or more system parameters.
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公开(公告)号:US06325818B1
公开(公告)日:2001-12-04
申请号:US09414184
申请日:1999-10-07
申请人: Randell Werneth
发明人: Randell Werneth
IPC分类号: A61F700
CPC分类号: A61F7/123 , A61F2007/126
摘要: A cooling apparatus having an inflatable balloon near a distal end of a multi-lumen catheter, with a plurality of blood flow passageways formed through the interior of the balloon from a proximal face of the inflated balloon to a distal face of the inflated balloon. Chilled saline solution is introduced through a supply lumen of the catheter to inflate the balloon in a feeding artery of the selected organ; this allows blood to flow through the blood flow passageways of the balloon, from one exterior face of the balloon to another exterior face. The saline solution continues to circulate around the blood flow passageways inside the balloon, to cool the blood, eventually exiting the balloon through a return lumen of the catheter.
摘要翻译: 一种在多腔导管的远端附近具有可充气气囊的冷却装置,具有从所述充气球囊的近侧面到所述充气气囊的远侧面的气囊内部形成的多个血流通道。 通过导管的供应内腔引入冷冻盐水溶液,以使所选器官的进食动脉中的气囊膨胀; 这允许血液流过气囊的血液流通道,从气囊的一个外表面流到另一个外表面。 盐水溶液继续围绕气囊内的血流通道循环,以冷却血液,最终通过导管的返回腔离开球囊。
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公开(公告)号:US20110028966A1
公开(公告)日:2011-02-03
申请号:US12533903
申请日:2009-07-31
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.
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