# US 11,998,452 B2 · Modular knee augment cones

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- Number: US 11,998,452 B2
- Document ID: US11998452B2
- Status: Granted
- Kind: B2
- Application number: 18/298,595
- Filed: 2023-04-11
- Published: 2023-09-28
- Granted: 2024-06-04
- Earliest claimed: 2020-01-29
- Assignees: Encore Medical, L.P.
- Applicants: Encore Medical, LP
- Inventors: Jesse Heggs; Alex Drew; John Green
- Web page: https://patentgrep.com/patent/US11998452B2

## CPC

- A61F 2/389: {Tibial components (A61F2/3868 takes precedence)}
- A61F 2/30767: {Special external or bone-contacting surface, e.g. coating for improving bone ingrowth}
- A61F 2/30771: {applied in original prostheses, e.g. holes or grooves}
- A61F 2/30734: {Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect}
- A61F 2002/30011: {differing in porosity}
- A61F 2002/30205: {conical}
- A61F 2002/30383: {made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove}
- A61F 2002/3039: {with possibility of relative movement of the rib within the groove}
- A61F 2002/30398: {Sliding}
- A61F 2002/30401: {with additional means for preventing or locking said sliding}
- A61F 2002/30403: {Longitudinally-oriented cooperating ribs and grooves on mating lateral surfaces of a mainly longitudinal connection}
- A61F 2002/30448: {using adhesives}
- A61F 2002/30736: {Augments or augmentation pieces, e.g. wedges or blocks for bridging a bone defect}
- A61F 2002/30881: {Circumferential ribs, flanges or fins}
- A61F 2002/3092: {having an open-celled or open-pored structure}
- 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

A modular augment cone system and methods of implanting the modular augment cone system. The system includes a main body cone a first cutout in the cone wall, and including a proximal end, a distal end, and a cone wall extending between the proximal and distal ends. A portion of the cone wall proximal to the first cutout includes an attachment feature. A first augment cone is positionable in the first cutout, the first augment cone including an attachment feature configured to mate with the attachment feature of the cone wall to attach the first augment cone into the first cutout. The main body cone can include a second cutout in the cone wall. In such systems, the modular augment cone system can include a second augment cone configured to mate with an attachment feature of the cone wall to attach the second augment cone into the second cutout.

## Claims

### Claim 1

A modular augment cone system sized and configured to receive a portion of a tibial implant, comprising:
a main body cone including a proximal end, a distal end, and a cone wall extending between the proximal end and the distal end, the main body cone further including a first cutout in the cone wall extending from the proximal end of the main body cone towards the distal end of the main body cone, wherein portions of the cone wall proximal to the first cutout includes a cone wall attachment feature, and wherein the cone wall of the main body cone includes an exterior surface comprising a porous coating; and
a first augment cone positionable in the first cutout, the first augment cone including an augment attachment feature configured to mate with the cone wall attachment feature to attach the first augment cone into the first cutout, wherein an exterior surface of the first augment cone comprises a porous coating,
wherein the main body cone further comprises a proximal ring structure positioned circumferentially at the proximal end of the main body cone on the exterior surface of the cone wall, and a distal ring structure positioned circumferentially at the distal end of the main body cone on the exterior surface of the cone wall, and wherein the porous coating of the main body cone extends between the proximal ring structure and the distal ring structure,
wherein the cone wall attachment feature and the augment attachment feature are correspondingly and complementarily shaped to have a close but movable fit to allow the first augment cone to be slid into place until it is seated in the cutout.

### Claim 2 (depends on 1)

The modular augment cone system of claim 1, further comprising a second augment cone, wherein the main body cone further comprises a second cutout in the cone wall, the second augment cone is positionable in the second cutout, wherein portions of the cone wall proximal to the second cutout includes a cone wall attachment feature and wherein the second augment cone includes an augment attachment feature configured to mate with the cone wall attachment feature to attach the second augment cone into the second cutout, wherein an exterior surface of the second augment cone comprises a porous coating.

### Claim 3 (depends on 2)

The modular augment cone system of claim 2, wherein the first cutout and the second cutout are positioned in the cone wall such that a portion of the cone wall between a first edge of the first cutout and an adjacent first edge of the second cutout is larger than a portion of the cone wall between a second edge of the first cutout and an adjacent second edge of the second cutout.

### Claim 4 (depends on 2)

The modular augment cone system of claim 2, wherein centers of the first cutout and the second cutout are aligned 180 degrees apart.

### Claim 5 (depends on 2)

The modular augment cone system of claim 2, wherein a length dimension of the second cutout is between 14 mm and 24 mm.

### Claim 6 (depends on 2)

The modular augment cone system of claim 2, wherein a length dimension of the second cutout is 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, or 31 mm.

### Claim 7 (depends on 2)

The modular augment cone system of claim 2, wherein a width dimension of the second cutout along the proximal end of the main body of the main cone is 12 mm, 13, mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, or 29 mm.

### Claim 8 (depends on 1)

The modular augment cone system of claim 1, wherein a length dimension of the first cutout is between 14 mm and 24 mm.

### Claim 9 (depends on 1)

The modular augment cone system of claim 1, wherein a length dimension of the first cutout is 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, or 31 mm.

### Claim 10 (depends on 1)

The modular augment cone system of claim 1, wherein a width dimension of the first cutout along the proximal end of the main body cone is between 16 mm and 25 mm.

### Claim 11 (depends on 1)

The modular augment cone system of claim 1, wherein a width dimension of the first cutout along the proximal end of the main body cone is 12 mm, 13, mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, or 29 mm.

### Claim 12 (depends on 1)

The modular augment code system of claim 1, wherein the porous coating of the cone wall extends to the distal end of the main body cone.

### Claim 13 (depends on 1)

The modular augment code system of claim 1, wherein the porous coating of the cone wall extends to the proximal end of the main body cone.

### Claim 14 (depends on 1)

The modular augment code system of claim 1, wherein the porous coating of the cone wall extends to the proximal end and the distal end of the main body cone.

### Claim 15 (depends on 1)

The modular augment code system of claim 1, wherein the cone wall taper inward from the proximal end to the distal end at an angle between 0° and 30°.

### Claim 16 (depends on 1)

The modular augment code system of claim 1, wherein the cone wall taper inward from the proximal end to the distal end at an angle between 5° and 15°.