公开(公告)号：US20140005699A1

公开(公告)日：2014-01-02

申请号：US13794350

申请日：2013-03-11

Applicant: MEDRAD, INC.

Inventor： Michael J. Bonnette ,  Debra M. Kozak ,  Eric J. Thor

IPC: A61B17/3207

CPC classification number: A61B17/320758 ,  A61B17/320725 ,  A61B2017/22079 ,  A61B2217/005 ,  A61B2217/007

Abstract: An atherectomy and thrombectomy system includes a catheter body extending between proximal and distal catheter portions. The catheter body includes an aspiration lumen extending therein. An atherectomy assembly is coupled with the distal catheter portion and includes a rotatable cutter. A thrombectomy assembly is coupled with the distal catheter portion. The thrombectomy assembly includes a jet body within the aspiration lumen, and inflow and outflow orifices extending through the catheter body and in communication with the aspiration lumen. In a thrombectomy configuration a cyclical flow is generated by the jet body through the outflow and inflow orifices to hydrodynamically abrade thrombus, the cyclical flow entrains thrombus and delivers thrombus into the aspiration lumen. In the atherectomy configuration the rotatable cutter cuts plaque into plaque particulate, and the cyclical flow of the thrombectomy assembly entrains the particulate and delivers the particulate into the aspiration lumen.

Abstract translation: 粥样斑块切除术和血栓切除术系统包括在近端和远端导管部分之间延伸的导管体。 导管主体包括在其中延伸的抽吸腔。 动脉粥样组织切除术组件与远侧导管部分联接并且包括可旋转切割器。 血栓切除术组件与远侧导管部分联接。 血栓切除组件包括抽吸腔内的喷射体，以及延伸穿过导管主体并与抽吸腔连通的流入口和出口孔。 在血栓切除结构中，射流体通过流出孔和流入口产生循环流动以流体动力学研磨血栓，循环流动引起血栓并将血栓输送到抽吸腔。 在粥样斑块切除配置中，可旋转切割器将牙斑切割成斑块颗粒，并且血栓切除术组件的循环流动夹带颗粒并将颗粒输送到抽吸腔中。