| 摘要 |
A method and apparatus for positioning an implant between spinous processes, generally comprising a cannula for percutaneous insertion between the spinous processes, an obturator that can be removably mounted within the cannula and is slidable therein so that an inner end thereof can moved inwardly beyond an inner end of the cannula, and an implant that is constructed to be movable within the cannula when the obturator is removed therefrom for positioning between the spinous processes. In accordance with the method, an insertion is made through the skin on one side of the rear portion of the spine, the cannula having the obturator slidably movable therein is inserted inwardly through the incision so that the inner end of the cannula is positioned between the spinous processes, the obturator is removed from the cannula, the implant is inserted within the cannula and moved therein to a position between the spinous processes, and the cannula is removed from the implant. The implant may be retained between the spinous processes when the cannula is removed therefrom by inflating the implant or mechanically expanding it.
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