Multiple component bone void filling implant

• US 10,149,762 B2
• Filed: 05/03/2016
• Issued: 12/11/2018
• Est. Priority Date: 04/27/2012
• Status: Active Grant

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Inventors: Rudnick, James J., Bennett, Christopher Michael, Wolverton, Anthony, Wainwright, Jason
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): Hoban, Melissa
• Application Number:
  US15/145,447
• Publication Number:
  US 20160242910A1
• Time in Patent Office: 952 Days
• CPC Class Codes: A61F 2/2875 Skull or cranium A61F2/2803 and A61F2/3099 take precedence
• CPC Class Codes: A61F 2002/30331 made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2002/30378 Spherically-shaped protrusion and recess
• CPC Class Codes: A61F 2002/30576 with extending fixation tabs
• CPC Class Codes: A61F 2002/30599 stackable
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit

Abstract

Disclosed herein are implants and methods for filling voids in a cranium of a patient. A craniofacial implant that may be used for filling such voids may include at least first and second components each having outer and inner surfaces, the outer and inner surfaces being curved in an inferior to posterior direction and a medial to lateral direction. The first component includes a flange extending outwardly from a medial side surface thereof and the second component includes a recessed portion extending inwardly from a medial side surface thereof. The first and second components are preferably engageable to one another such that the medial side surfaces of the first and second components are adjacent one another and the flange of the first component is housed within the recessed portion of the second component.

Claims

1. A method for filling a bone void in a cranium of a patient with a craniofacial implant having at least first and second components each having outer and inner surfaces, comprising:

coupling a lateral side surface of the second component to a first portion of a perimeter of the bone void;

contacting a lateral end of a deflectable flange of the first component with a lateral end of a recessed portion of the second component, the recessed portion being a cavity defined in the outer surface of the second component;

coupling a lateral side surface of the first component to a second portion of the perimeter of the bone void; and

rotating the deflectable flange about a point defined by a medial end of the flange when the lateral end of the flange is in contact with the lateral end of the recessed portion until an inner surface of the deflectable flange lies adjacent to an outer surface of the recessed portion from a medial end to the lateral end of the recessed portion and the outer surfaces of the first and second components form a contiguous convex outer surface of the craniofacial implant.

2. The method of claim 1, wherein the deflectable flange of the first component extends outwardly from a medial side surface thereof, and the recessed portion of the second component extends inwardly from a medial side surface thereof.

3. The method of claim 1, wherein the first and second components are separate and distinct components and both the first and second components are curved in both medial to lateral directions and inferior to posterior directions.

4. The method of claim 1, wherein rotating the deflectable flange moves at least a portion of the outer surface of the first component towards the inner surface of the second component.

5. The method of claim 1, wherein the deflectable flange is rotated counterclockwise about the point defined by the medial end of the deflectable flange.

6. The method of claim 1, wherein when the inner surface of the deflectable flange lies adjacent to the outer surface of the recessed portion, the inner surfaces of the first and second components form a contiguous concave inner surface of the craniofacial implant.

7. A method for filling a bone void in a cranium of a patient with a craniofacial implant having at least first and second component each having outer and inner surfaces, comprising:

coupling a lateral side surface of the second component to a first portion of a perimeter of the bone void;

contacting a deflectable flange of the first component with a recessed portion of the second component, the recessed portion being a cavity defined in the outer surface of the second component;

rotating the deflectable flange about a point defined by a medial end of the deflectable flange when the deflectable flange is in contact with the second component until a lateral end of the deflectable flange lies on a plane defined by the outer surface of the first component;

translating the lateral end of the deflectable flange until it contacts a lateral end of the recessed portion; and

coupling a lateral side surface of the first component to a second portion of the perimeter of the bone void such that the outer surfaces of the first and second components form a contiguous convex outer surface of the craniofacial implant.

8. The method of claim 7, further comprising:

rotating the deflectable flange until an inner surface of the deflectable flange lies adjacent to an outer surface of the recessed portion from a medial end to the lateral end of the recessed portion.

9. The method of claim 8, wherein rotating the deflectable flange moves at least a portion of the outer surface of the first component towards the inner surface of the second component.

10. The method of claim 8, wherein when the inner surface of the deflectable flange lies adjacent to the outer surface of the recessed portion.

11. The method of claim 8, wherein when the inner surface of the deflectable flange lies adjacent to the outer surface of the recessed portion, the inner surfaces of the first and second components form a contiguous concave inner surface of the craniofacial implant.

12. The method of claim 7, wherein the deflectable flange of the first component extends outwardly from a medial side surface thereof, and the recessed portion of the second component extends inwardly from a medial side surface thereof.

13. The method of claim 7, wherein the first and second components are curved in both medial to lateral directions and inferior to posterior directions.

14. The method of claim 7, wherein the deflectable flange is rotated counterclockwise about a point defined by the medial end of the deflectable flange.

15. A method for filling a bone void in a cranium of a patient with a craniofacial implant having at least first and second components each having outer and inner surfaces, comprising:

coupling a lateral side surface of the second component to a first portion of a perimeter of the bone void;

contacting an inner surface of a deflectable flange of the first component with an outer surface of a recessed portion, the recessed portion being a cavity defined in the outer surface of the second component;

rotating the deflectable flange about a point defined by a medial end of the deflectable flange when the deflectable flange is in contact with the second component until a lateral end of the deflectable flange lies on a plane defined by the outer surface of the first component; and

coupling a lateral side surface of the first component to a second portion of the perimeter of the bone void such that the outer surfaces of the first and second components form a contiguous convex outer surface of the craniofacial implant.

16. The method of claim 15, further comprising:

contacting a lateral end of the deflectable flange of the first component with a lateral end of the recessed portion of the second component.

17. The method of claim 15, wherein the deflectable flange of the first component extends outwardly from a medial side surface thereof, and the recessed portion of the second component extends inwardly from a medial side surface thereof.

18. The method of claim 15, wherein the first and second components are curved in both medial to lateral directions and inferior to posterior directions.