发明名称 |
Stretch-resistant vaso-occlusive coils |
摘要 |
This is an implantable vaso-occlusive device. It is typically a vaso-occlusive coil comprised of a primary helically wound coil which may then be wound into a secondary shape. Central to the invention is the use of a stretch-resisting member fixedly attached within at least a portion of the primary coil. The stretch-resisting member may be formed into coil tips at the ends of the coil by melting the polymeric fibers or alloys or by attaching the fibers with a glue. This stretch-resisting member is for the primary purpose of preventing stretching of the coil during movement of that coil, e.g., by retrieval or repositioning after deployment. The device typically has a self-forming secondary shape made from a pre-formed primary linear helically wound coil, although it need not have the secondary form. External fibers may be attached to the device and affixed to the pre-formed linear member to increase. The vaso-occlusive member may be also be covered with a fibrous braid. The device is typically introduced into the body through a catheter. The device is passed axially through the catheter sheath and assumes its secondary form upon exiting the catheter. <IMAGE> |
申请公布号 |
EP0754435(A1) |
申请公布日期 |
1997.01.22 |
申请号 |
EP19960304812 |
申请日期 |
1996.06.28 |
申请人 |
TARGET THERAPEUTICS, INC. |
发明人 |
KEN, CHRISTOPHER G.M.;GIA, SON M.;ENGELSON, ERIK T. |
分类号 |
A61B17/00;A61B17/12;A61B19/00;A61F2/00;A61F2/84 |
主分类号 |
A61B17/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|