Orthopedic augments having recessed pockets

Patent metadata

Field	Value
Publication number	US-9848989-B2
Application number	US-201615163190-A
Country	US
Kind code	B2
Filing date	May 24, 2016
Priority date	Dec 7, 2011
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

Systems, devices, and methods for providing orthopedic augments having recessed pockets that receive a fixation material. The orthopedic augments include an outer surface that interfaces with a patient's tissue or bone, and an inner surface that interfaces with an implant, the inner surface defining a recessed pocket configured to receive a fixation material, a rim around at least a portion of the recessed pocket, and a port in the rim, wherein the recessed pocket extends along the inner surface in at least a direction laterally from the port.

First claim

What is claimed is:

1. A method of utilizing an orthopedic augment structured for use with an orthopedic implant, wherein the augment is rigid and includes a porous outer surface, an inner surface defining a recessed pocket having a fixed shape, a port extending through the outer surface and the inner surface to the pocket, and a rim structured to flushly engage the implant, the method comprising:
positioning the augment against the implant with the rim flushly engaged with the implant, thereby partially enclosing the pocket having the fixed shape; and
affixing the augment to the implant with the rim flushly engaged with the implant, wherein the affixing includes inserting a fluid fixation material into the pocket via the port.

2. The method of claim 1 , wherein the positioning and the affixing are performed with the implant implanted in a patient.

3. The method of claim 1 , wherein the positioning includes forming a fluid-tight seal between the rim and the implant.

4. The method of claim 1 , wherein the inserting of the fixation material into the pocket via the port includes injecting the fluid fixation material into the pocket via the port and filling the pocket with the fluid fixation material.

5. The method of claim 1 , wherein a fitting is attached to the port, and wherein the method further comprises attaching an insertion device to the fitting prior to the affixing, and wherein the affixing includes operating the insertion device to inject the fluid fixation material into the pocket via the fitting.

6. The method of claim 1 , wherein the augment comprises a plurality of ports, and wherein the affixing includes inserting the fluid fixation material into the pocket via a first of the ports until the fixation material is observed via a second of the ports.

7. The method of claim 1 , wherein the augment comprises a plurality of ports, the method further comprising determining a preferred orientation of the augment with respect to the implant and selecting, based upon the determining, one of the plurality of ports through which to inject the fixation material; wherein the affixing includes injecting the fluid fixation material into the pocket via the selected port.

8. The method of claim 7 , the fixation material is injected into the pocket via the selected port until the fixation material is observed via another of the ports.

9. The method of claim 1 , wherein the pocket comprises a first compartment and a second compartment, wherein the fluid fixation material is injected into the first compartment via the port, and wherein overfilling the first compartment causes the fixation material to flow into the second compartment.

10. A method of utilizing an orthopedic augment structured for use with an orthopedic implant, wherein the augment includes a porous outer surface, an inner surface defining a recessed pocket, a port extending through the outer surface and the inner surface to the pocket, and a rim structured to flushly engage the implant, the method comprising:
positioning the augment against the implant with the rim flushly engaged with the implant, wherein the positioning of the augment against the implant includes positioning a gasket between the rim and the implant such that the rim flushly engages the implant via the gasket; and
affixing the augment to the implant with the rim flushly engaged with the implant, wherein the affixing includes inserting a fluid fixation material into the pocket via the port.

11. A method of utilizing an orthopedic augment structured for use with an orthopedic implant having a tissue-facing surface, wherein the augment includes an outer surface, an inner surface defining a recessed pocket, a port extending through the outer surface and the inner surface to the pocket, and a rim structured to flushly engage the tissue-facing surface of the implant, the method comprising:
inserting the augment into a cavity of a surgical site, wherein the cavity is formed between a first portion of the tissue-facing surface and tissue defining a first surface of the surgical site, wherein a second portion of the tissue-facing surface is in contact with bone tissue defining a second surface of the surgical site, and wherein the inserting includes flushly engaging the rim with the first portion of the tissue-facing surface; and
inserting a fixation material into the pocket of the augment via the port, thereby affixing the augment to the implant.

12. The method of claim 11 , further comprising placing the implant at the surgical site such that the second portion of the tissue-facing surface contacts the bone tissue defining the second surface of the surgical site; wherein the placing of the implant is performed prior to the inserting of the augment into the cavity.

13. The method of claim 11 , wherein the inserting of the augment is performed with the implant implanted at the surgical site.

14. The method of claim 11 , wherein the inserting of the augment further comprises engaging the outer surface of the augment with the tissue defining the first surface of the surgical site.

15. The method of claim 14 , wherein the tissue defining the first surface of the surgical site comprises soft tissue, and wherein the outer surface of the augment comprises a smooth surface finish configured to prevent attachment with the soft tissue.

16. The method of claim 14 , wherein the tissue defining the first surface of the surgical site is defined by bone tissue, and wherein the outer surface of the augment comprises a porous composition configured to promote ingrowth of the bone tissue.

17. The method of claim 11 , wherein one of the outer surface and the inner surface comprises a porous composition, and wherein the other of the outer surface and the inner surface comprises a smooth surface finish.

18. The method of claim 11 , wherein the augment comprises a plurality of ports, and wherein the affixing includes inserting the fluid fixation material into the pocket via a first of the ports until the fixation material is observed via a second of the ports.

19. The method of claim 11 , wherein the augment comprises a plurality of ports, the method further comprising determining a preferred orientation of the augment with respect to the implant and selecting, based upon the determining, one of the plurality of ports through which to inject the fixation material; wherein the affixing includes injecting the fluid fixation material into the pocket via the selected port.

20. The method of claim 19 , wherein the fixation material is injected into the pocket via the selected port until the fixation material is observed via another of the ports.

Assignees

• Smith & Nephew Inc

Inventors

• Shea Jeffrey J
• Goldberg Daniel R
• Quinn Nathaniel M
• Tsai Stanley

Classifications

• A61F2/30734 Primary

  Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect · CPC title

• A61F2002/30736

  Augments or augmentation pieces, e.g. wedges or blocks for bridging a bone defect · CPC title

• A61F2/4601

  for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity · CPC title

• A61F2/30723

  Plugs or restrictors for sealing a cement-receiving space (tools for inserting plugs A61F2/4614; sealing collars for use during cementing A61B17/8808) · CPC title

• A61B17/8052

  immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded · CPC title