An expandable intervertebral implant is provided comprising a front wall (1), a back wall (2) spaced apart from the front wall, and two side walls (3, 4) connecting the front wall (1) and the back wall (2) at their respective ends, the walls defining a space (5), a bottom face, a top face, at least one engagement member (30, 30') with an engagement surface (34, 34') for engagement with the end plate of a vertebral body, a first adjusting element (20) and a second adjusting element (20') which are supported by a first support member (11) and a second support member (11'), respectively, and which cooperate with the respective support member such that the engagement member (30, 30') is reciprocally movable between a first end position wherein the engagement surface (34, 34') does not project beyond the bottom face or the top face and a second partially projects outwardly beyond the bottom face or the top face, wherein the first and the second support members (11, 11') are coupled by a coupling mechanism (15 ； 150, 151 ； 160).(Fig. 1)本案提供一種可撐張之椎間植入體，包括：前壁(1)；後壁(2)，與前壁隔開；和二側壁(3,4)，在其各端連接前壁(1)和後壁(2)；諸壁界定空間(5)；底面；頂面；至少一結合構件(30,30')，有結合表面(34,34')，與椎骨本體之端板結合；第一調節元件(20)和第二調節元件(20')，分別以第一支持構件(11)和第二支持構件(11')支持，並分別與支持構件合作，使結合構件(30,30')可在第一末端位置(其中結合表面(34,34')不會突出超過底面或頂面)和第二末端位置(其中結合表面(34,34')至少部份向外突出超過底面或頂面)之間往復運動；其中第一和第二支持構件(11,11')係利用聯結機制(15；150,151；160)加以聯結。
