公开(公告)号：WO1998018516A1

公开(公告)日：1998-05-07

申请号：PCT/US1997020168

申请日：1997-10-29

Applicant: C.R. BARD, INC.

Inventor： C.R. BARD, INC. ,  FAGAN, John, R. ,  MORRILL, Richard ,  CHOH, Richard ,  JANSEN, Lex, P.

IPC: A61M25/01

CPC classification number: A61M25/09 ,  A61M2025/09175

Abstract: A guidewire having a flexible distal end region that permits axisymmetric steering and forming, said guidewire comprising: a core wire having a main body and a flexible distal end at said flexible distal end region of said guidewire; a flexible first coil coupled to said distal end of said core wire, said first coil having a proximal section with a first outer diameter and a distal section with a second outer diameter smaller than said first outer diameter; and a flexible second coil coupled to said first coil and positioned substantially concentrically over said distal section of said first coil; wherein said second coil is formed from a formable material capable of reaching a stress value above its yield point such that said second coil maintains a desired bend imparted thereto to thereby impart a bend to said distal end of said guidewire.

Abstract translation: 一种导线，其具有允许轴对称转向和成形的柔性远端区域，所述导丝线包括：芯线，其具有在所述导丝的所述柔性远端区域处的主体和柔性远端; 耦合到所述芯线的所述远端的柔性第一线圈，所述第一线圈具有具有第一外径的近端部分和具有小于所述第一外径的第二外径的远端部分; 以及耦合到所述第一线圈并基本同心地定位在所述第一线圈的所述远端部分上方的柔性第二线圈; 其中所述第二线圈由能够达到其屈服点以上的应力值的可成形材料形成，使得所述第二线圈保持施加到其上的期望弯曲，从而向所述导丝的所述远端施加弯曲。