An automatic elastic expandable spinal implant comprises a main body (10) and two link rods (20, 30). The main body (10) comprises a base portion (11) and two side extension portions (12, 13). The two side extension portions (12, 13) have distal ends (15, 16), respectively. The two link rods (20, 30) are disposed inside the base portion (11) and the two side extension portions (12, 13) of the main body (10). The two link rods (20, 30) have outer ends (21, 31) hingedly connected with the distal ends (15, 16) of the two side extension portions (12, 13) of the main body (10) at a second pivot portion (36) and a third pivot portion (37) respectively. The two link rods (20, 30) have inner ends (22, 32), respectively. The inner ends (22, 32) of the two link rods (20, 30) are hingedly connected with each other at a first pivot portion (33). At least one of the main body (10) and the two link rods (20, 30) is capable of elastic deformation. When the two link rods (20, 30) are pushed or pulled a predetermined distance (A) from the base portion (11) of the main body (10), the two link rods (20, 30) automatically expand away from the base portion (11) of the main body (10). The operation of the present invention is more improved.本發明係在於提供一種自動彈性擴張椎體植入物,其包括一本體,具有一基礎部位以及兩側伸部位,各側伸部位各具有一末端,以及二聯結桿容設在該本體的基礎部位以及側伸部位裡面,各聯結桿各具有一末端分別和該本體的各側伸部位的末端鉸接在一第二樞部及一第三樞部,而各聯結桿各具有一內側端,該兩聯結桿的內側端則相互鉸接在一第一樞部,而該本體及該聯結桿之其中至少一者具有彈性變形能力,使得當該兩聯結桿被推離或拉離該本體的基礎部位一段預定距離之後,使該兩聯結桿會自動彈離開該本體的基礎部位,而使其在操作上可以更進步者。1‧‧‧植入物10‧‧‧本體11‧‧‧基礎部位12、13‧‧‧側伸部位14‧‧‧容室15、16‧‧‧末端18、19、28、29‧‧‧鋸齒表面20、30‧‧‧聯結桿21、31‧‧‧聯結桿的外側端22、32‧‧‧聯結桿的內側端33‧‧‧第一樞部36‧‧‧第二樞部37‧‧‧第三樞部
