US 2022/0087819 A1 · COMPOSITE POROUS INTERBODIES AND METHODS OF MANUFACTURE

Abstract

A method of forming a composite titanium body for use in forming spinal implant interbodies includes selecting a metal alloy body, carving out a top portion and a bottom portion from the metal alloy body, and bonding a porous material to the carved-out top and bottom portions. Multiple pieces may be cut from the composite titanium body, each having a front face formed of the metal alloy, top and bottom portions formed of the porous material, and with a medial portion of the metal alloy extending from the front face to the back. Methods and devices for spinal interbodies having locking mechanisms to prevent bone screw back-out are also described.

Claims20

Dependent claims

A method of manufacturing a composite interbody, the method comprising:

selecting a solid titanium body having a top side and a bottom side;
carving out a portion of the top side of the solid titanium body to form a top portion void;
carving out a portion of the bottom side of the solid titanium body to form a bottom portion void;
diffusion bonding porous titanium to the top portion void;
diffusion bonding porous titanium to the bottom portion void, the steps of diffusion bonding porous titanium to the top portion void and bottom portion void forming a composite titanium block;
and
cutting out a composite interbody from the composite titanium block.

4 more elements

A composite interbody system comprising:

a body having an anterior face and an opposing posterior face, a top portion and a bottom portion, with a medial portion extending through the body from the anterior face to the opposing posterior face, the medial portion separating the top portion and the bottom portion;
the anterior face formed of a solid metal alloy, the top portion and bottom portion formed of a porous metal, and the medial portion formed of a solid metal alloy;
the anterior face comprising a first bore for receiving a first bone screw, and a first inwardly extending channel proximal to the first bore, the inwardly extending channel for receiving a first locking mechanism;
the anterior face comprising a second bore for receiving a second bone screw, and a second inwardly extending channel proximal to the second bore, the second inwardly extending channel for receiving a second locking mechanism;
the first locking mechanism comprising a cylinder receivable into the first inwardly extending channel, the cylinder having an inward end and an outward end, and a first tab projecting outwardly from the outward end of the cylinder, the first tab projecting at least partially into the first bore;
and
the second locking mechanism comprising a cylinder receivable in the second inwardly extending channel, and a second tab projecting outwardly from the cylinder, the second tab projecting at least partially into the second bore.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/482,829Filed 23 Sep 2021

Priority

24 Sep 2020

Published

24 Mar 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification23 codes

A61F 2/4455
For the spine, e.g. vertebrae or spinal discs: for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion…
A61F 2/3094
Joints: designing or manufacturing processes
A61F 2/447
For the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages: substantially parallelepipedal, e.g.…
A61L 27/06
Metals or alloys: titanium or titanium alloys

Composite porous interbodies and methods of manufacture

Life of this patent

Composite porous interbodies and methods of manufacture

Life of this patent

Abstract

Claims20