| 摘要 |
A method and apparatus for performing a percutaneous surgical disc procedure which includes the steps of percutaneously entering the back of the patient in a posterolateral direction with an access cannula (30a), advancing the access cannula through a first percutaneously created fenestration of the annulus of the disc (101) and securing a guide means (50) relative to the access cannula. The back of the patient is again entered percutaneously in a posterolateral direction with an accessory cannula (30b) and the accessory cannula is advanced relative to the guide means to guide the accessory cannula into a second percutaneously created fenestration of the annulus adjacent to and on the same side of the disc as the first fenestration for orientating the access cannula and the accessory cannula relative to each other on the same side of the disc. |
