公开(公告)号：US20050215942A1

公开(公告)日：2005-09-29

申请号：US11047464

申请日：2005-01-31

申请人： Tim Abrahamson ,  Thomas Hiblar ,  Francisco Villar

发明人： Tim Abrahamson ,  Thomas Hiblar ,  Francisco Villar

IPC分类号： A61B17/20 ,  A61B17/22 ,  A61N7/00

CPC分类号： A61B17/2202 ,  A61B8/0808 ,  A61B8/12 ,  A61B2017/22038 ,  A61B2017/22084 ,  A61M2025/0004 ,  A61N7/00

摘要： An ultrasound catheter adapted for accessing small vessels in the distal anatomy is disclosed. The ultrasound catheter comprises an elongate tubular body formed with a delivery lumen. The flexibility and dimensions of the tubular body allow access to the distal anatomy by advancement over the guidewire. An ultrasound radiating member is provided along the distal end portion of the tubular body for emitting ultrasound energy at a treatment site. A drug solution may also be delivered through the delivery lumen and out an exit port to the treatment site.

摘要翻译： 公开了适于接近远端解剖结构中的小血管的超声导管。 超声导管包括形成有输送腔的细长管状体。 管状体的灵活性和尺寸允许通过导丝进入远端解剖结构。 沿管状体的远端部设置有超声波辐射构件，用于在治疗部位发射超声能量。 药物溶液也可以通过输送腔输送出出口到治疗部位。

公开(公告)号：US06482216B1

公开(公告)日：2002-11-19

申请号：US09656183

申请日：2000-09-06

申请人： Thomas Hiblar ,  Robert Lawrence Barry

发明人： Thomas Hiblar ,  Robert Lawrence Barry

IPC分类号： A61B1722

CPC分类号： A61B17/320758 ,  A61B2017/320004

摘要： An ablation burr has a body provided with an inner circumferential rim and an outer circumferential rim that are concentric and spaced longitudinally by a selected distance along the length of the burr. The outer circumferential rim has a generally smooth convex outer surface that reduces damage to a vessel wall or stent. A leading surface of the burr extends between the inner and outer circumferential rims in a substantially uniform, concave manner. An abrasive, for example, diamond grit, is provided on the leading surface. The burr is selectively rotated by a drive shaft, causing the abrasive leading surface of the burr to ablate unwanted deposits. If desired, a wire extends co-axially through the body such that a distal end of the wire extends out of the distal end of the burr. An abrasive tip may be coupled to the distal end of the wire, and is selectively rotated, to ablate unwanted deposits. The burr may be made of a compressible elastomeric material, to facilitate positioning the burr through restrictive openings, such as the coronary ostia. To prevent the burr from becoming welded to a spring tip at the end of the guide wire, a bearing may be provided at a distal region of the guide wire. The bearing has a dynamic member that acts as a bumper and rotates when the ablation device is advanced to the distal region of the guide wire and contacts the dynamic member. In an alternative embodiment of the invention, the leading surface of the burr includes one or more aspiration ports through which debris that is ablated from the occlusion may be removed from a patient's vessel.

摘要翻译： 消融毛刺具有主体，该主体设置有内圆周边缘和外圆周边缘，所述内圆周边缘和外圆周边缘同心且沿着毛刺长度方向间隔一段选定距离。 外圆周边缘具有大致平滑的凸形外表面，其减小对血管壁或支架的损伤。 毛刺的前导表面以大致均匀的凹陷方式在内圆周边缘和外圆周边缘之间延伸。 研磨剂，例如金刚石砂粒，提供在前表面上。 毛刺被驱动轴选择性地旋转，导致毛刺的研磨引导表面烧蚀不需要的沉积物。 如果需要，线材同轴地延伸通过本体，使得线材的远端延伸出毛刺的远端。 研磨尖端可以联接到线的远端，并且被选择性地旋转以消除不想要的沉积物。 毛刺可以由可压缩的弹性体材料制成，以便于通过诸如冠状动脉口的限制性开口将毛刺定位。 为了防止毛刺在引导线的端部焊接到弹簧尖端，可以在导丝的远侧区域处设置轴承。 轴承具有作为保险杠的动态构件，并且当消融装置前进到导丝的远侧区域并接触动态构件时旋转。 在本发明的替代实施例中，毛刺的前表面包括一个或多个抽吸端口，通过该抽吸端口可以从患者的血管移除从闭塞中消除的碎屑。