Removable augment for medical implant

• US 9,707,080 B2
• Filed: 08/08/2016
• Issued: 07/18/2017
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: SMed TA/TD, LLC. (Sites Medical LLC)
• Original Assignee: SMed TA/TD, LLC. (Sites Medical LLC)
• Inventors: Stalcup, Gregory C., Knapp, Troy D.
• Primary Examiner(s): STEWART, JASON-DENNIS NEILKEN
• Application Number:
  US15/231,000
• Publication Number:
  US 20160338837A1
• Time in Patent Office: 344 Days
• CPC Class Codes: A61F 2/2846 Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects nets or sleeves applied to surface of endoprostheses A61F2/30907; bone plates A61B17/80; bone regeneration in dental surgery A61C8/0006
• CPC Class Codes: 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
• CPC Class Codes: A61F 2/38 for elbows or knees
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes precedence
• CPC Class Codes: A61F 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30736 Augments or augmentation pieces, e.g. wedges or blocks for bridging a bone defect
• CPC Class Codes: A61F 2002/3092 having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/4619 for extraction
• CPC Class Codes: A61F 2310/00359 Bone or bony tissue

Abstract

A method of using an orthopedic implant includes providing a main body, as well as a porous augment having a bone ingrowth surface. The main body is removably attached with another surface of the porous augment to form an orthopedic implant. A portion of a bone is extracted from the body of a patient and, subsequently, the orthopedic implant is implanted into the body of the patient. The porous augment is positioned such that a bone interfacing surface of the porous augment interfaces with a cut surface of the bone from which the portion of bone is extracted to facilitate bone ingrowth into the porous augment.

Claims

1. A method of using an orthopaedic implant, the method comprising the steps of:

providing a main orthopaedic implant body;

providing a porous augment having a bone ingrowth surface;

removably attaching said main orthopaedic implant body with another surface of said porous augment to form an orthopaedic implant;

extracting a portion of a bone from a body of a patient;

subsequent to said extracting step, implanting said orthopaedic implant into the body of the patient;

positioning said porous augment such that a bone interfacing surface of said porous augment interfaces with a cut surface of said bone from which said portion is extracted and to facilitate bone ingrowth;

forming an opening in the cut surface of said bone; and

placing a post of said orthopaedic implant in said formed opening, said post having a solid exposed surface.

2. The method of using an orthopaedic implant according to claim 1, wherein said step of removably attaching said other surface of said porous augment with said main orthopaedic implant body is with at least one fastener.

3. The method of using an orthopaedic implant according to claim 2, wherein said at least one fastener is formed from polyether ether ketone (PEEK).

4. The method of using an orthopaedic implant according to claim 1, said porous augment being one of a polymer scaffold, allograft bone, autograft bone, and a cuttable metal scaffold.

5. The method of using an orthopaedic implant according to claim 1, said porous augment being formed from polyether ether ketone (PEEK).

6. The method of using an orthopaedic implant according to claim 1, further comprising the step of cutting a predetermined segment of said orthopaedic augment and an ingrown bone material during a revision surgery.

7. The method of using an orthopaedic implant according to claim 1, further comprising the step of detaching said main orthopaedic implant body from said porous augment.