-
21.发明授权Heart ablation catheter with expandable electrode and method of coupling energy to an electrode on a catheter shaft 失效具有可扩张电极的心脏消融导管和将能量耦合到导管轴上的电极的方法
公开(公告)号：US5860974A
公开(公告)日：1999-01-19
申请号：US797720
申请日：1997-02-11
申请人： John E. Abele
发明人： John E. Abele
CPC分类号： A61B8/12 , A61B18/1492 , A61B8/4461 , A61B17/2202 , A61B2017/00243 , A61B2017/00924 , A61B2017/22051 , A61B2017/22077 , A61B2017/22082 , A61B2017/22084 , A61B2018/00077 , A61B2018/00148 , A61B2018/00214 , A61B2018/0022 , A61B2018/00273 , A61B2018/00285 , A61B2018/00351 , A61B2018/00577 , A61B2018/1425 , A61B2018/1435 , A61B2034/2063 , A61B2090/378 , A61B8/445
摘要： An expandable ablation electrode is provided on a catheter constructed to access the heart. When the electrode is introduced to the heart, it is small and suitably flexible to maneuver through the torturous path. However, when the catheter is in place in the heart, the electrode is expansible in diameter to a substantially larger dimension, and is relatively rigid, enabling a large conductive surface to press against the heart tissue with the desired contact pressure. When RF energy is then applied to the electrode it produces a burn lesion of desired large size and depth. This overcomes the limitations to size that have been encountered using conventional rigid electrodes.
摘要翻译： 可扩张消融电极设置在构造成接近心脏的导管上。 当电极被引入心脏时，它是小的并且适当地灵活地操纵通过曲折的路径。 然而，当导管在心脏中就位时，电极的直径可膨胀到基本上更大的尺寸，并且相对刚性，使得能够以所需的接触压力将大的导电表面压靠心脏组织。 然后当RF能量被施加到电极时，其产生期望的大尺寸和深度的烧伤损伤。 这克服了使用常规刚性电极所遇到的尺寸限制。
-
22.发明授权
公开(公告)号：US5403311A
公开(公告)日：1995-04-04
申请号：US038903
申请日：1993-03-29
CPC分类号： A61B18/1477 , A61B18/1492 , A61B17/00234 , A61B18/1402 , A61B2017/00292 , A61B2018/00196 , A61B2018/00595 , A61B2018/1425 , A61M2025/0079 , A61M2025/0089 , A61M3/0279
摘要： A catheter includes a flexible elongated catheter body that defines a needle-receiving, or probe-receiving, lumen, a retractable tissue-penetrable needle, or probe, and an electrode mounted on the distal portion of the catheter body. The needle provides a fluid passage for introducing fluid into tissue to permit the introduction of sclerotic agents for enhancing electrocoagulation of the tissue, heat-responsive drugs for improving the bonding to tissue surfaces, or vaso-constrictor drugs. The probe can also have a passage for fluid. The electrode can provide bipolar electro-coagulation of tissue in combination with an additional electrode mounted on the catheter body, or alternatively, the electrode can be employed in combination with either the needle or probe to establish a bipolar electro-coagulation path through tissue. The needle, or probe, in combination with an external electrode can be used to provide unipolar electro-coagulation, or ablation. In certain instances, the electrode can be used to provide a mapping function inside cardiac chambers.
摘要翻译： 导管包括限定针接收或探针接收的内腔的柔性细长导管主体，可伸缩的组织可穿透针或探针以及安装在导管主体的远端部分上的电极。 针提供用于将流体引入组织中以允许引入用于增强组织电凝的硬化剂的流体通道，用于改善与组织表面的粘合的热反应性药物或血管收缩药物。 探针也可以有一个流体通道。 电极可以与安装在导管体上的附加电极组合地提供组织的双极电凝，或者可以将电极与针或探针组合使用以建立通过组织的双极电凝途径。 针或探针与外部电极组合可用于提供单极电凝或消融。 在某些情况下，电极可用于提供心室内的映射功能。
-
公开(公告)号：US5372138A
公开(公告)日：1994-12-13
申请号：US988322
申请日：1992-12-09
CPC分类号： A61B5/6848 , A61B18/1492 , A61B5/416 , A61B8/12 , A61B8/445 , A61B8/4461 , A61B10/02 , A61B10/0291 , A61B17/34 , A61B2017/22078 , A61B2018/00208 , A61B2018/00214 , A61B2018/00898 , A61B2018/1861 , A61B2090/3782 , A61M25/104
摘要： Acoustic imaging balloon catheters formed by a disposable liquid-confining sheath supporting a high fidelity, flexible drive shaft which carries on its end an ultrasound transducer and includes an inflatable dilatation balloon. The shaft and transducer rotate with sufficient speed and fidelity to produce real time images on a T.V. screen. In preferred embodiments, special features that contribute to the high fidelity of the drive shaft include the particular multi-filar construction of concentric, oppositely wound, interfering coils, a pre-loaded torque condition on the coils enhancing their interfering contact, and dynamic loading of the distal end of the probe, preferably with viscous drag. The coil rotating in the presence of liquid in the sheath is used to produce a desirable pressure in the region of the transducer. Numerous selectable catheter sheaths are shown including a sheath with an integral acoustically-transparent window, sheaths with end extensions that aid in positioning, a liquid injection-producing sheath, a sheath having its window section under tension employing an axially loaded bearing, a sheath carrying a dilatation or positioning balloon over the transducer, a sheath carrying a distal rotating surgical tool and a sheath used in conjunction with a side-viewing trocar.
摘要翻译： 由一次性液体限制护套形成的声学成像气囊导管，其支撑高保真，柔性的驱动轴，其承载超声换能器并且包括可膨胀的扩张气囊。 轴和传感器以足够的速度和保真度旋转，以在T.V.屏幕上产生实时图像。 在优选实施例中，有助于驱动轴的高保真度的特殊特征包括同心的，相对缠绕的干扰线圈的特定的多线结构，线圈上的预加载的转矩条件增强其干扰接触，并且动态加载 探针的远端，优选具有粘性阻力。 在鞘内存在液体的情况下旋转的线圈用于在换能器的区域产生所需的压力。 显示了许多可选择的导管鞘，其包括具有整体透声窗口的护套，具有有助于定位的端部延伸部分的护套，液体注射产生护套，具有在轴向加载的轴承的张力下的窗口部分的护套， 在换能器上的扩张或定位球囊，携带远端旋转手术工具的护套和与侧视套管针结合使用的护套。
-
公开(公告)号：US4951677A
公开(公告)日：1990-08-28
申请号：US171039
申请日：1988-03-21
IPC分类号： A61B8/12
CPC分类号： A61B5/6848 , A61B8/12 , A61B8/445 , A61B8/4461 , A61B10/02 , A61B2018/00208 , A61B2018/1861
摘要： Acoustic imaging catheters formed by a disposable liquid-confining sheath supporting a high fidelity, flexible drive shaft which carries on its end an ultrasound transducer. The shaft and transducer rotate with sufficient speed and fidelity to produce real time images on a T.V. screen. Special features that contribute to the high fidelity of the drive shaft include the particular multifilar construction of concentric, oppositely wound, interfering coils, a preloaded torque condition on the coils enhancing their interfering contact, and dynamic loading of the distal end of the probe, preferrably with viscous drag. The coil rotating in the presence of liquid in the sheath is used to produce a desirable pressure in the region of the transducer. Numerous selectable catheter sheaths are shown including a sheath with an integral acoustically-transparent window, sheaths with end extensions that aid in positioning, a liquid injection-producing sheath, a sheath having its window section under tension employing an axially loaded bearing, a sheath carrying a dilatation or positioning balloon over the transducer, a sheath carrying a distal rotating surgical tool and a sheath used in conjunction with a side-viewing trocar.
摘要翻译： 由一次性液体限制护套形成的声学成像导管，其支撑高保真，柔性的驱动轴，其承载超声换能器。 轴和传感器以足够的速度和保真度旋转，以在T.V.屏幕上产生实时图像。 有助于驱动轴的高保真度的特殊特征包括同心的，相对缠绕的干扰线圈的特定的多相结构，线圈上的预加载的转矩条件增强了它们的干涉接触以及探针的远端的动态负载 具有粘性阻力。 在鞘内存在液体的情况下旋转的线圈用于在换能器的区域产生所需的压力。 显示了许多可选择的导管鞘，其包括具有整体透声窗口的护套，具有有助于定位的端部延伸部分的护套，液体注射产生护套，具有在轴向加载的轴承的张力下的窗口部分的护套， 在换能器上的扩张或定位球囊，携带远端旋转手术工具的护套和与侧视套管针结合使用的护套。
-
-
-
搜索结果
24 条记录 (耗时 0.025 秒)
