Expandable Intervertebral Cage Implant
Summary
USPTO granted patent US12605254B2 to inventor Robert Woodruff for an expandable intervertebral cage implant. The device features top and bottom plates with rotatable leaves, front and rear wedges, and a deployment mechanism that rotates leaves into a deployed position while increasing cage width and height. The mechanism also allows variation of the lordosis angle by moving one wedge while keeping the other stationary.
What changed
USPTO granted patent US12605254B2 for an expandable intervertebral cage implant to inventor Robert Woodruff. The patent covers a device with rotatable leaves on top and bottom plates, front and rear wedges, and a deployment mechanism that rotates leaves into deployed position while increasing cage width and height.
Manufacturers of spinal implant devices should be aware of this patent when developing expandable intervertebral cage products to avoid potential infringement claims. The adjustable lordosis angle feature may represent a competitive differentiator in the spinal implant market.
Archived snapshot
Apr 21, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Expandable intervertebral cage implant
Grant US12605254B2 Kind: B2 Apr 21, 2026
Inventors
Robert Woodruff
Abstract
An expandable intervertebral cage, having: a top plate with rotatable leaves thereon; a bottom plate with rotatable leaves thereon; front and rear wedges; and a deployment mechanism that moves the front or rear wedges to rotate the leaves on the top and bottom plates into a deployed position that increases the width of the intervertebral cage. The deployment mechanism also moves the wedges to push the top and bottom plates farther apart thereby increasing the height of the intervertebral cage, or moves one of the wedges while keeping the other wedge stationary to vary a lordosis angle for the intervertebral cage.
CPC Classifications
A61F 2/44 A61F 2/442 A61F 2/4425 A61F 2/4455 A61F 2/446 A61F 2/4465 A61F 2/447 A61F 2002/443 A61F 2/4611 A61F 2002/30537
Filing Date
2024-05-02
Application No.
18653281
Claims
10
Mentioned entities
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Source
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