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Stabilized expandable intervertebral spacer

  • US 10,219,914 B2
  • Filed: 11/10/2015
  • Issued: 03/05/2019
  • Est. Priority Date: 11/10/2015
  • Status: Active Grant
First Claim
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1. A spacer for separating bones of a joint, the spacer comprising:

  • a first endplate configured to engage a first bone of the joint, and comprising a ramped surface;

    a tissue engaging subassembly disposed in a compartment of the first endplate;

    a second endplate configured to engage a second bone of the joint; and

    a frame subassembly that extends between the first endplate and the second endplate, wherein the frame subassembly comprises;

    a drive nut, a drive shaft coupled to the drive nut, a ramped carriage coupled to the drive shaft, wherein the ramped carriage comprises a ramped surface operable to engage the ramped surface of the first endplate, and an actuation bar coupled to the drive nut comprising a plate operable to engage the tissue engaging subassembly, wherein the tissue engaging subassembly comprises a base and projection member, wherein the projection member comprises a tissue engaging end, a stop at an opposite end from the tissue engaging end, and a post, wherein the post extends through a channel in the base, wherein the stop secures the projection member to the base.

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