| 发明名称 |
EXTENSION DEVICE FOR A BONE ANCHOR, IN PARTICULAR FOR MINIMALLY INVASIVE SURGERY |
| 摘要 |
An extension device for a bone anchor is provided, wherein the bone anchor comprises an anchoring section and a receiving part connected to the anchoring section, the receiving part having a central axis, the extension device comprising a first sleeve with a first sleeve axis that is coaxial to the central axis and being configured to be coupled to and decoupled from the receiving part; a second sleeve with a second sleeve axis coaxial to the central axis, being positioned within the first sleeve and positionable relative to the first sleeve along the central axis, and being configured to be coupled to and decoupled from the receiving part; a locking member that, in a first configuration, inhibits decoupling of the first sleeve or the second sleeve from the receiving part when the other one of the first sleeve or the second sleeve is coupled to the receiving part. |
| 申请公布号 |
US2015359571(A1) |
申请公布日期 |
2015.12.17 |
| 申请号 |
US201514740228 |
申请日期 |
2015.06.15 |
| 申请人 |
Biedermann Timo;Dannecker Berthold |
发明人 |
Biedermann Timo;Dannecker Berthold |
| 分类号 |
A61B17/70 |
主分类号 |
A61B17/70 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An extension device for a bone anchor, wherein the bone anchor comprises
an anchoring section for anchoring in a bone and a receiving part connected to the anchoring section, the receiving part comprising a central axis and a channel for receiving a rod, wherein sidewalls of the channel form two free legs, the extension device comprising a first sleeve with a first sleeve axis that is coaxial to the central axis, wherein the first sleeve is configured to be coupled to the receiving part and decoupled from the receiving part; a second sleeve with a second sleeve axis coaxial to the central axis, wherein the second sleeve is positioned within the first sleeve and positionable relative to the first sleeve along the central axis and wherein the second sleeve is configured to be coupled to the receiving part and decoupled from the receiving part; a locking member that in a first configuration inhibits decoupling of one of the first sleeve or the second sleeve from the receiving part when the other one of the first sleeve or the second sleeve is still coupled to the receiving part. |
| 地址 |
Trossingen DE |
