Lordotic expandable fusion implant

Patent metadata

Field	Value
Publication number	US-10973650-B2
Application number	US-201616068606-A
Country	US
Kind code	B2
Filing date	Dec 30, 2016
Priority date	Dec 30, 2015
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

The present disclosure provides an expandable spinal implant comprising a plurality of moveable endplates pivotably connect to a housing.

First claim

I claim:

1. An expandable spinal implant comprising a plurality of moveable endplates pivotably connect to a housing; a central body located within the housing wherein the central body comprises a wedge, wherein the central body is laterally translatable with respect to the housing; wherein the plurality of moveable endplates comprise a ramp opposite the central body's wedge that is configured to engage the wedge; a lead screw engaged with the central body; and a passive locking mechanism, wherein the passive locking mechanism comprises a locking collar on the lead screw, wherein the locking collar comprises one or more engagement tabs, wherein the housing comprises one or more recesses on an interior wall, wherein the one or more recesses are configured to receive the one or more engagement tabs.

2. An expandable spinal implant comprising a plurality of moveable endplates pivotably connect to a housing, a central body, a lead screw engaged with the central body and a passive locking mechanism, wherein the central body comprises a wedge, wherein central body is laterally translatable with respect to the housing; wherein the plurality of moveable endplates comprise a ramp opposite the central body's wedge that is configured to engage the wedge, and wherein the passive locking mechanism comprises a locking collar on the lead screw, wherein the locking collar comprises one or more engagement tabs, wherein the housing comprises one or more recesses on an interior wall, wherein the one or more recesses are configured to receive the one or more engagement tabs.

Assignees

• Nuvasive Inc

Inventors

• Stein Christopher

Classifications

• A61B17/8033

  having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers · CPC title

• A61F2002/30556

  for adjusting thickness · CPC title

• A61F2002/30538

  for adjusting angular orientation · CPC title

• A61F2/4455 Primary

  for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages (intervertebral discs A61F2/442) · CPC title

• A61F2/4611

  of spinal prostheses · CPC title