# US 2014/0156006 A1 · Vertebral Body Replacement

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- Number: US 2014/0156006 A1
- Document ID: US20140156006A1
- Status: Published application
- Kind: A1
- Application number: 14/177,100
- Filed: 2014-02-10
- Published: 2014-06-05
- Earliest claimed: 2009-03-12
- Assignees: NuVasive, Inc.
- Applicants: NuVasive, Inc.
- Inventors: Shaeffer Bannigan; Ryan Donahoe
- Web page: https://patentgrep.com/patent/US20140156006A1

## CPC

- A61F 2/4455: {for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages (intervertebral discs A61F2/442)}
- A61F 2/44: for the spine, e.g. vertebrae or spinal discs
- A61F 2/4611: {of spinal prostheses}
- A61F 2/4603: {for insertion or extraction of endoprosthetic joints or of accessories thereof}
- A61F 2002/2835: {Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material}
- A61F 2002/30171: {rosette- or star-shaped}
- A61F 2002/30235: {tubular, e.g. sleeves}
- A61F 2002/30383: {made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove}
- A61F 2002/30393: {with additional means for limiting said rotation}
- A61F 2002/30395: {with additional means for preventing or locking said rotation}
- A61F 2002/30405: {made by screwing complementary threads machined on the parts themselves}
- A61F 2002/30433: {using additional screws, bolts, dowels, rivets or washers e.g. connecting screws}
- A61F 2002/305: {Snap connection}
- A61F 2002/30507: {using a threaded locking member, e.g. a locking screw or a set screw}
- A61F 2002/3055: {for adjusting length}
- A61F 2002/30556: {for adjusting thickness}
- A61F 2002/30579: {with mechanically expandable devices, e.g. fixation devices}
- A61F 2002/30593: {hollow}
- A61F 2002/30601: {telescopic}
- A61F 2002/30774: {internally-threaded}
- A61F 2002/30777: {Oblong apertures}
- A61F 2002/30779: {arcuate}
- A61F 2002/30785: {parallel}
- A61F 2002/30789: {perpendicular with respect to each other}
- A61F 2002/30818: {castellated or crenellated}
- A61F 2002/30836: {knurled}
- A61F 2002/30841: {Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes}
- A61F 2002/4622: {having the shape of a forceps or a clamp}
- 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 2002/4628: {with linear motion along or rotating motion about an axis transverse to the instrument axis or to the implantation direction, e.g. clamping}
- A61F 2310/00017: Iron- or Fe-based alloys, e.g. stainless steel
- A61F 2310/00023: Titanium or titanium-based alloys, e.g. Ti-Ni alloys
- 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)

## Abstract

The present invention involves a system and methods for assembling and implanting a vertebral body implant. The vertebral body implant includes, but is not necessarily limited to, an expandable core body and endplates that can be attached at both ends. Endplates of various shapes, sizes and angles are attachable to the expandable core in a plurality of positions so that a suitable vertebral body implant can be implanted between vertebrae from an anterior, anterior-lateral, lateral, posterior or posterior-lateral approach.

## Claims

### Claim 1

An implant for providing support between a first vertebra and a second vertebra in a space remaining after the removal of at least part of one vertebra, comprising:
an expandable body having a transverse axis and a longitudinal axis, and a length extending from a first end to a second end wherein the expandable core body includes a ring member rotatable about the axis of the expandable body to adjust the length between the first end and the second end;
a first endplate having a first surface opposing a second surface, said first endplate coupled to the expandable body via a first attachment feature on the first surface of the first endplate of the expandable body that mates with a first complementary attachment feature of the first endplate, said first attachment feature of the first end of the expandable body and said first complementary attachment feature of the first endplate are configured to allow the first endplate to be coupled to the first end of the expandable body in a plurality of positions relative to the transverse axis of the expandable body; and
a second endplate a first surface opposing a second surface, said second endplate coupled to the expandable body via a second attachment feature of the second end of the expandable body that mates with a second complementary attachment feature of the second endplate, said second attachment feature of the second end of the expandable body and said second complementary attachment feature of the second plate are configured to allow the second end plate to be coupled to the second end of the expandable body in a plurality of positions relative to the transverse axis of the expandable body.

### Claim 2 (depends on 1)

The implant of claim 1, wherein said second surface of said first endplate and said second surface of said second endplate are convexly curved.

### Claim 3 (depends on 1)

The implant of claim 1, wherein said first surface of the first endplate and said second surface of the first endplate are parallel to each other.

### Claim 4 (depends on 1)

The implant of claim 1, wherein said first surface of said first endplate and said second surface of said first endplate form an angle relative to each other.

### Claim 5 (depends on 3)

The implant of claim 3, wherein said first surface of the second endplate and said second surface of the second endplate are parallel to each other.

### Claim 6 (depends on 3)

The implant of claim 3, wherein said first surface of the second endplate and said second surface of the second endplate form an angle relative to each other.

### Claim 7 (depends on 4)

The implant of claim 4, wherein said first surface of the second endplate and said second surface of the second endplate form an angle relative to each other.

### Claim 8 (depends on 4, 6, 7)

The implant of claim 4, 6 or 7, wherein the angle ranges from −4° to 7°.

### Claim 9 (depends on 1)

The implant of claim 1, wherein said first endplate and said second endplate have a length dimension greater than a width dimension.

### Claim 10 (depends on 1)

The implant of claim 1, wherein said first endplate and said second endplate are circular.

### Claim 11 (depends on 9)

The implant of claim 9, wherein said first endplate and said second endplate are dimensioned to span from one lateral aspect of a vertebral body endplate to another lateral aspect of the vertebral body endplate.

### Claim 12 (depends on 1)

The implant of claim 1, wherein said expandable body further comprises an inner core and an outer core, wherein said ring member is coupled to the inner core and the outer core such that rotation of the ring member causes the inner core to translate relative to the outer core and increases the length between said first end and said second end of the expandable body.

### Claim 13 (depends on 1)

The implant of claim 1, wherein said expandable body and said first and second endplates include a fusion aperture extending therethrough.