发明名称 |
Deflectable microimplant delivery system |
摘要 |
The present invention provides a deflectable catheter-based system for assisting in the delivery of therapeutic agents, cellular materials and the like to one or more sites in a target body tissue. The system provides for one or more injections to a predetermined needle insertion depth with a single core needle that can be advanced and retracted from the tip of the catheter. The catheter assembly includes a handle subassembly having a mechanism for setting and limiting the depth of insertion of the needle, a slide for moving the injection needle between retracted and extended positions, a return spring for biasing the needle to the retracted position, and a modified pulley mechanism for compensating for catheter shaft compression when the catheter is deflected.
|
申请公布号 |
US2004039338(A1) |
申请公布日期 |
2004.02.26 |
申请号 |
US20020152110 |
申请日期 |
2002.05.21 |
申请人 |
LEE MICHAEL J.;KRISTOFFERSEN KRISTIAN P. |
发明人 |
LEE MICHAEL J.;KRISTOFFERSEN KRISTIAN P. |
分类号 |
A61M25/00;A61M25/01;(IPC1-7):A61M5/178 |
主分类号 |
A61M25/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|