公开(公告)号：US06800085B2

公开(公告)日：2004-10-05

申请号：US09835043

申请日：2001-04-13

申请人： Matthew R. Selmon ,  Charles F. Milo ,  Robert L. Wynne ,  Suresh S. Pai ,  Kent D. Dell ,  Charles Gresl ,  Gerald Hansen ,  E. Richard Hill, III

发明人： Matthew R. Selmon ,  Charles F. Milo ,  Robert L. Wynne ,  Suresh S. Pai ,  Kent D. Dell ,  Charles Gresl ,  Gerald Hansen ,  E. Richard Hill, III

IPC分类号： A61M2900

CPC分类号： A61M29/02 ,  A61B17/22 ,  A61B17/22031 ,  A61B2017/00845 ,  A61B2017/22052 ,  A61B2017/22069 ,  A61B2017/22094 ,  A61B2017/2933 ,  A61B2017/2937 ,  A61B2017/320044 ,  A61B2017/320741

摘要： An intravascular catheter system for the treatment of occluded blood vessels that includes tissue displacement or hinged expansion members that are movable from a closed to an open position. An actuating assembly may be provided for moving the tissue expansion members between an open and closed position to exert a substantially lateral distal end force upon the region surrounding an occluded blood vessel. The tissue expansion members may stretch apart, tear or otherwise disrupt a vascular occlusion sufficiently to create a pathway that may support the passage or placement of a guidewire or an interventional vascular device across the occlusion or obstruction. Methods of crossing or displacing a vascular occlusion are further provided that include the positioning of a vascular catheter having at least one hinged spreading member positioned at the distal region of the catheter that is responsive to directed force along the longitudinal axis of the catheter. A directed force is applied to the actuator in order to deploy the spreading member and displace a vascular occlusion creating a path to permit the passage of a guidewire or device therethrough.