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Intervertebral implant for transforaminal posterior lumbar interbody fusion procedure

  • US 7,223,292 B2
  • Filed: 12/12/2005
  • Issued: 05/29/2007
  • Est. Priority Date: 05/03/2001
  • Status: Expired due to Term
First Claim
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1. 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.

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