Patent ID: 7223292

Claim:
An intervertebral implant for posterior insertion via a transforaminal window comprising; curved, substantially parallel posterior and anterior faces, the posterior and anterior faces extending along a longitudinal axis of the implant; a pair of convex narrow ends separating the posterior and anterior faces; superior and inferior faces for contacting upper and lower vertebral endplates, the superior and inferior faces defining a thickness of the implant; at least one depression in the anterior or posterior face for engagement by an insertion tool; at least two vertical through-channels extending through the implant from the superior face to the inferior face, each vertical through-channel having a width and walls on posterior and anterior sides of the width, the walls on the posterior and anterior sides of the width of the vertical through-channels having a thickness greater than the width of the vertical through channels; and a chamfer on the superior and inferior faces at one of the convex narrow ends to facilitate implant insertion.