公开(公告)号：US06638222B2

公开(公告)日：2003-10-28

申请号：US10072064

申请日：2002-02-08

申请人： Chandru V. Chandrasekaran ,  Zihong Guo ,  Anthony J. Pantages ,  Donald Masters ,  Ryan Kaveckis

发明人： Chandru V. Chandrasekaran ,  Zihong Guo ,  Anthony J. Pantages ,  Donald Masters ,  Ryan Kaveckis

IPC分类号： A61B800

CPC分类号： A61B8/4461 ,  A61B8/12 ,  A61B8/445 ,  A61B18/1492 ,  A61B2017/003 ,  A61B2018/00208 ,  A61B2018/00351 ,  A61B2018/0041 ,  A61B2018/00541 ,  A61B2018/144 ,  A61B2018/1861 ,  A61B2090/3782 ,  A61F9/0079

摘要： A combination catheter includes an ultrasound transducer and RF ablation electrode. The ultrasound transducer transmits ultrasound signals into and receives echo signals from a vessel. The echo signals are processed and used to produce an image of the tissue surrounding the catheter. A driveshaft rotates the ultrasound transducer to obtain a 360° view of the vessel wall. At the distal end of the driveshaft is an electrode. An RF generator is electrically coupled to the driveshaft to deliver RF energy to the electrode at the distal end of the driveshaft to ablate occluding material in the vessel. The electrode may have a variety of tip shapes including concave, roughened, or expandable configurations, depending on the size of the vessel and composition of the occluding material to be ablated.

摘要翻译： 组合导管包括超声换能器和RF消融电极。 超声波传感器将超声波信号发送到容器中并从容器接收回波信号。 回波信号被处理并用于产生围绕导管的组织的图像。 驱动轴旋转超声换能器以获得血管壁的360°视图。 在驱动轴的远端是电极。 RF发生器电耦合到驱动轴以将RF能量传递到驱动轴的远端处的电极以消除容器中的封闭材料。 取决于容器的尺寸和待烧蚀的封闭材料的组成，电极可以具有各种尖端形状，包括凹形，粗糙化或可膨胀构型。

公开(公告)号：US06394956B1

公开(公告)日：2002-05-28

申请号：US09514970

申请日：2000-02-29

申请人： Chandru V. Chandrasekaran ,  Zihong Guo ,  Anthony J. Pantages ,  Donald Masters ,  Ryan Kaveckis

发明人： Chandru V. Chandrasekaran ,  Zihong Guo ,  Anthony J. Pantages ,  Donald Masters ,  Ryan Kaveckis

IPC分类号： A61B800

CPC分类号： A61B8/4461 ,  A61B8/12 ,  A61B8/445 ,  A61B18/1492 ,  A61B2017/003 ,  A61B2018/00208 ,  A61B2018/00351 ,  A61B2018/0041 ,  A61B2018/00541 ,  A61B2018/144 ,  A61B2018/1861 ,  A61B2090/3782 ,  A61F9/0079

摘要： A combination catheter includes an ultrasound transducer and RF ablation electrode. The ultrasound transducer transmits ultrasound signals into and receives echo signals from a vessel. The echo signals are processed and used to produce an image of the tissue surrounding the catheter. A driveshaft rotates the ultrasound transducer to obtain a 360° view of the vessel wall. At the distal end of the driveshaft is an electrode. An RF generator is electrically coupled to the driveshaft to deliver RF energy to the electrode at the distal end of the driveshaft to ablate occluding material in the vessel. The electrode may have a variety of tip shapes including concave, roughened, or expandable configurations, depending on the size of the vessel and composition of the occluding material to be ablated. Alternatively, the RF ablation energy may be delivered to a guidewire that is used to route the ultrasound catheter through a patient's vasculature. Finally, a steerable catheter can be used to further position the ultrasound catheter and ablation electrode in the vessel.

摘要翻译： 组合导管包括超声换能器和RF消融电极。 超声波传感器将超声波信号发送到容器中并从容器接收回波信号。 回波信号被处理并用于产生围绕导管的组织的图像。 驱动轴旋转超声换能器以获得血管壁的360°视图。 在驱动轴的远端是电极。 RF发生器电耦合到驱动轴以将RF能量传递到驱动轴的远端处的电极以消除容器中的封闭材料。 取决于容器的尺寸和待烧蚀的封闭材料的组成，电极可以具有各种尖端形状，包括凹形，粗糙化或可膨胀构型。 或者，RF消融能量可以被递送到用于将超声导管穿过患者脉管系统的引导线。 最后，可以使用可导向的导管将超声波导管和消融电极进一步放置在容器中。