| 摘要 |
Cervical vertebrae fused implant having cover and ring between lower ball and upper cup is provided to form a compact structure of the implant, to completely prevent penetration of impurities around the lower ball and the upper cup, and to improve contact movement between the lower ball and the upper cup by placing the lower ball and the upper cup inside a lower body and an upper body of the implant, respectively, and arranging the cover and the ring between the lower ball and the upper cup. The cervical vertebrae fused implant comprises: a lower body(10) and an upper body(11) positioned between adjacent vertebrae; and a lower ball(12) and an upper cup(13) accepted into the lower and upper bodies, respectively; a cover(14) installed around outline of the body near contact area between the lower ball(12) and the upper cup(13) to prevent impurities from penetrating into the contact area; and at least two rings(15) for fastening the cover. Top and bottom ends of the cover(14) are entered into dent(16) formed around the lower and upper bodies(10,11). The rings(15) are coupled to outer side of the inserted site. |
