| 摘要 |
<p>A spacer for insertion between two vertebrae is provided to enable length adjustment of the spacer, to fill the spacer with bone cement and bone graft through an access opening, and to improve ease of handling. A spacer for insertion between two vertebrae, the spacer having a variable axial length and includes: a first part(2) having a hollow interior and a tubular wall; and a second part(3) having a hollow interior and a tubular wall, in which the second part is slidable within the first part in an axial direction to adjust an overall length. At least the first part or the second part includes: an access opening(6,9) having a size to be adapted for inserting bone graft through the opening into the interior; a length adjustment structure(19,20) engaged with a tool for telescoping the second member relative to the first member; and locking structures(10,11,12) for fixing the axial length. The access opening, the length adjustment structure and the locking structure are arranged so as to be accessible from the same side of the spacer.</p> |
