| 摘要 |
PURPOSE: An intervertebral implant is provided to be used for intervertebral disc replacement, and have a simple design with few parts, for convenient handling. CONSTITUTION: An intervertebral implant comprises a monolithic body with an upper wall (1) configured to engage a first vertebral end plate and a lower wall configured to engage a second vertebral end plate, with two opposite sidewalls (3,4) connecting the upper wall and the lower wall, respectively, and with a load transmitting part (8) configured to transmit load between the upper wall and the lower wall. The monolithic body is configured to assume a compressed condition in which a distance between the upper wall and the lower wall defines a first height of the implant and an expanded condition in which the distance between the upper wall and the lower wall defines a second height of the implant that is greater than the first height. The implant is made of a material that exhibits shape memory properties that cause the implant to change from the compressed condition to the expanded condition. |
