JP2004505722A5 - - Google Patents

Claims (7)

A biocompatible metal body implant having an anterior wall, a posterior wall, and two side walls, the two side walls extending between the anterior wall and the posterior wall and approximately It defines a lumen of D shaped, and each side wall defines a substantially arcuate curvature for connecting the one ends and the rear wall of the front wall, and each wall is at least one in the wall includes an opening, the upper part surface and the lower portion surface of the two side walls has a plurality of teeth extending from the surface to engage the adjacent vertebral bodies, said implant is biocompatible metal made from, the side wall height from the rear wall and the front wall becomes taper shaped; wherein, Oyo upper portion surfaces of the upper and lower surfaces and the rear wall of the front wall beauty lower portion each surface has no teeth, and have a height substantially the same height as the side wall of the part adjacent to the front wall and rear wall ; Wherein the height of the rear wall is in a range of from about 11mm~ about 15 mm, and the front wall height is in the range of about 8mm~ about 12 mm, wherein a rear wall of said implant The implant, wherein the height difference between the front wall of the implant is about 3 mm . The spinal disc implant of claim 1 , wherein the biocompatible metal body is titanium or an alloy thereof. The lumen includes a porous hydroxyapatite block shaped to be held by the implant into the lumen, spinal disc implant according to claim 2. Upper and lower surfaces of the implant, curved so as to engage the surface of the dome-shaped end plates of the adjacent vertebrae, the implant is inserted between said end plates, according to claim 1 spinal Disc implant. Upper edge and lower edge of the implant, curved convexly as to fit the surface of the end plate of the vertebrae adjacent the implant between the end plates are inserted, according to claim 4 Spinal disc implant. The implant made of biocompatible metals for changing place the diseased spinal disc, the implant comprises a body of substantially D-shaped, is body, front wall curving, substantially straight back wall, and A pair of spaced arcuate sidewalls connecting the front wall and the rear wall, the sidewall comprising a plurality of teeth on its upper and lower surfaces, the front wall and the rear wall comprising: no teeth, and have a height of about the sidewall is less than twice the height equal to the height of the tooth, also the rear wall, said upper edge for engaging the insertion device and also have notches on the lower edge, side wall is inclined from the front wall to the rear wall, as a result, the height of the rear wall, the height of the front wall, greater than about 3 mm, Wherein the height of the front wall is in the range of about 8 mm to about 12 mm, and the height of the rear wall is about 11 mm to about 15 m. By weight, wherein the implant comprises a plurality of openings spaced surrounding the periphery thereof, the implant. The spinal disc implant of claim 6 , wherein the biocompatible metal is titanium or an alloy thereof.