# US 2001/0020185 A1 · Threaded fusion cage anchoring device and method

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- Number: US 2001/0020185 A1
- Document ID: US20010020185A1
- Status: Published application
- Kind: A1
- Application number: 09/790,751
- Filed: 2001-02-22
- Published: 2001-09-06
- Earliest claimed: 1997-04-25
- Assignees: Tegementa, L.L.C.
- Inventors: Charles D. Ray
- Web page: https://patentgrep.com/patent/US20010020185A1

## CPC

- A61F 2/4611: {of spinal prostheses}
- A61F 2/446: {having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones}
- A61F 2/442: {Intervertebral or spinal discs, e.g. resilient (non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455)}
- A61F 2002/30235: {tubular, e.g. sleeves}
- A61F 2002/30331: {made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit}
- A61F 2002/30578: {having apertures, e.g. for receiving fixation screws}
- A61F 2002/30593: {hollow}
- A61F 2002/30774: {internally-threaded}
- A61F 2002/3085: {with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface}
- A61F 2002/449: {comprising multiple spinal implants located in different intervertebral spaces or in different vertebrae}
- A61F 2002/4627: {with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument}
- A61F 2220/0033: made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
- A61F 2230/0069: cylindrical
- Y10S 606/91: Polymer
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

The present disclosure is directed to an anchoring device and system for stabilizing adjacent vertebral joints. The anchoring device includes an anchoring plate adapted to be secured to at least one vertebral disc having a central portion, extended ends portions and at least one lateral extension. The central portion includes an anchoring nut for fastening the anchoring plate to a vertebral implant and the end portions include anchoring screws for fastening the anchoring plate to the at least one vertebral disc. The vertebral implant is preferably a threaded fusion cage, wherein the anchoring nut is rotatably fixed to both the anchoring plate and the threaded fusion cage. The anchoring device preferably includes the central portion and each extended end portion having at least one locking tab for rotatably locking the anchoring nut and anchoring screws. Additionally, the central portion further includes a plurality of projecting detents along an outer periphery thereof which mate with corresponding slots on the threaded fusion cage. The present disclosure is also directed to a method of implanting a vertebral implant.

## Claims

### Claim 1

An anchoring device for use with a vertebral implant comprising:
an anchoring plate having a central portion and at least one extended end portion;
the central portion configured for attachment to a vertebral implant; and
each end portion including an anchoring fastener, wherein the anchoring fastener is adapted to be joined to a bony segment.

### Claim 2 (depends on 1)

The anchoring device according to claim 1, including two extended end portions.

### Claim 3 (depends on 1)

The anchoring device according to claim 1, wherein the vertebral implant is a threaded fusion cage.

### Claim 4 (depends on 1)

The anchoring device according to claim 1, wherein the anchoring fastener is a bone screw.

### Claim 5 (depends on 1)

The anchoring device according to claim 1, wherein the central portion and each extended end portion further includes a least one locking tab.

### Claim 6 (depends on 1)

The anchoring device according to claim 1, wherein the central portion further includes a plurality of projecting detents along an outer periphery thereof.

### Claim 7 (depends on 1)

The anchoring device according to claim 1, wherein the anchoring plate further includes at least one lateral extension.

### Claim 8

A system for stabilizing adjacent vertebral portions comprising:
a vertebral implant adapted to be secured between adjacent vertebral portions;
an anchoring plate adapted to be secured to the adjacent vertebral portions, the anchoring plate having a central portion and extended ends portions;
the central portion including an anchoring nut for fastening the anchoring plate to the vertebral implant; and
the end portions including anchoring screws for fastening the anchoring plate to the adjacent vertebral portions.

### Claim 9 (depends on 8)

The anchoring system according to claim 8, wherein the vertebral implant is a threaded fusion cage.

### Claim 10 (depends on 9)

The anchoring system according to claim 9, wherein the anchoring nut is rotatably fixed to the anchoring plate and the threaded fusion cage.

### Claim 11 (depends on 8)

The anchoring system according to claim 8, wherein each end portion is fixedly attached to a vertebral disc.

### Claim 12 (depends on 8)

The anchoring system according to claim 8, wherein the central portion and each extended end portion further includes at least one locking tab.

### Claim 13 (depends on 8)

The anchoring system according to claim 8, wherein the central portion further includes a plurality of projecting detents along an outer periphery thereof.

### Claim 14 (depends on 8)

The anchoring system according to claim 8, wherein the anchoring plate further includes at least one lateral extension.

### Claim 15

A method of implanting a vertebral implant comprising the steps of:
inserting a vertebral implant between adjacent vertebrae;
positioning an anchoring plate in a corresponding relationship to the vertebral implant and the adjacent vertebrae, the anchoring plate including a central portion and extended ends portions, the central portion including an anchoring nut for fastening the anchoring plate to the vertebral implant, and the end portions including anchoring screws for fastening the anchoring plate to portions of the adjacent vertebrae;
fastening the anchoring nut to the vertebral implant; and
fastening the anchoring screws to the portions of the adjacent vertebrae.

### Claim 16 (depends on 15)

The method of implanting a vertebral implant according to claim 15, wherein the anchoring plate includes at least one locking tab along an outer periphery of the central portion and the extended end portions, and further including the step of positioning the locking tabs into engagement with the anchoring nut and anchoring screws.