Patent ID: 7204853
Filing Date: 2007-04-17
Classification: A61B,A61F

Abstract:
1. An intervertebral implant for a human spine, comprising: an upper body comprising an inferior surface and a superior surface, wherein the superior surface of the upper body is configured to engage a first vertebra of the human spine; a lower body comprising a superior surface and an inferior surface, wherein the inferior surface of the lower body is configured to engage a second vertebra of the human spine; an insert configured to be positioned between the superior surface of the lower body and the inferior surface of the upper body before insertion of the intervertebral implant between the first vertebra and the second vertebra of the human spine; and an expansion member configured to elevate the insert to increase a separation distance between the upper body and the lower body after insertion of the intervertebral implant in the human spine, and wherein a portion of the superior surface of the lower body is configured to inhibit backout of the expansion member from the intervertebral implant.