专利名称：Method for establishing collapsible infusion
conduit
发明人：Aubrey M. Palestrant申请号：US08/539991申请日：19951006公开号：US05618267A公开日：19970408
摘要：An apparatus and method for establishing a collapsible infusion conduit in ablood vessel includes a catheter formed as a normally- flattened tube of flexible,collapsible plastic. When placed in a blood vessel, the catheter collapses to a flattenedconfiguration for lying along the wall of the blood vessel to avoid obstruction to bloodflow. During infusion, infusion fluid expands the catheter to a generally oval flow path.The catheter may be initially placed in the blood vessel by pre-loading the catheter overa guide wire and inserting the catheter and guide wire through an introducer sheath intothe blood vessel. Infusion fluid is thereafter applied to the trailing end of the catheter toexpand the catheter to facilitate withdrawal of the guide wire. Alternatively, the leadingend of the catheter may initially be sealed, and placement into the blood vessel isachieved through an introducer sheath by inflating the catheter with pressurized fluid totemporarily render the catheter rigid and generally oval. The seal at the leading end ofthe catheter is thereafter opened, either by inserting a guide wire into the catheter topierce the sealed end, or by increasing the inflation pressure to burst a weakened breakline formed at the leading end of the catheter.
申请人：PALESTRANT; AUBREY M.
代理机构：Cahill, Sutton & Thomas, PC.
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容