Fixation devices and prostheses for soft tissue connection to the same

Patent metadata

Field	Value
Publication number	US-11219528-B2
Application number	US-201916524534-A
Country	US
Kind code	B2
Filing date	Jul 29, 2019
Priority date	Jul 31, 2018
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

An orthopedic assembly includes a tibial prosthesis that includes a body that defines an anterior side and a posterior side. The body further includes a recess in the anterior side of the joint prosthesis and a plurality of openings that extend through the body from the anterior side to the posterior side thereof. At least a first and second opening of the openings are positioned at respective lateral and medial sides of a longitudinal axis of the tibial prosthesis. A modular insert is positioned within the recess of the body such that at least a portion of the modular insert is positioned between the openings of the body. The modular insert is formed separately from the tibial prosthesis and has a porous outer surface to promote tissue ingrowth.

First claim

The invention claimed is:

1. An orthopedic assembly comprising:
a tibial prosthesis comprising a metaphyseal portion having a body defining a tibial tray region, an anterior side, and a posterior side, the body further defining a recess in the anterior side of the body of the metaphyseal portion and a plurality of openings extending through the body from the anterior side to the posterior side thereof, at least a first opening and second opening of the openings being positioned at respective lateral and medial sides of a longitudinal axis of the body of the metaphyseal portion;
a modular insert positioned within the recess of the body such that at least a portion of the modular insert is positioned between the openings of the body, the modular insert being formed separately from the body of the metaphyseal portion and having a porous outer surface to promote tissue ingrowth; and
a filamentary fixation device extending through the first and second openings of the body, the filamentary fixation device being made entirely of a length of woven material configured to promote tissue ingrowth,
wherein the first and second openings each define a posterior aperture and an anterior aperture,
wherein the filamentary fixation device has a first free end and a second free end, the first and second free ends extending through the posterior and anterior apertures of the respective first and second openings such that the first and second free ends are positioned at the anterior side of the body of the metaphyseal portion and overlap each other in an X-shaped arrangement.

2. The orthopedic assembly of claim 1 , wherein the filamentary fixation device comprises a mesh structure for securing soft tissue thereto.

3. The orthopedic assembly of claim 2 , wherein the mesh structure comprises a plurality of layers.

4. The orthopedic assembly of claim 3 , wherein the plurality of layers are connected by a continuous or interrupted seams.

5. The orthopedic assembly of claim 1 , wherein the modular insert includes a side-slot extending adjacent to an inner surface of the modular insert and a through-opening extending through the porous outer surface and inner surface such that the through-opening is in communication with the side-slot, the side-slot being at least partially defined by a rim.

6. The orthopedic assembly of claim 5 , further comprising a threaded fastener having a head and a threaded shaft, the head having a cross-sectional dimension smaller than the through-opening of the modular insert and being dimensioned to be received within the side-slot between the rim and inner surface of the modular insert.

7. The orthopedic assembly of claim 1 , wherein each of the posterior apertures has opposing parallel sides.

8. The orthopedic assembly of claim 7 , wherein each of the posterior apertures is pill-shaped or elliptically shaped.

9. The orthopedic assembly of claim 1 , wherein each of the first and second openings are defined by a first and second sidewall, the first sidewall curves about the central longitudinal axis of the body.

10. The orthopedic assembly of claim 9 , wherein the first sidewall is convexly curved and the second sidewall is concavely curved.

Assignees

• Howmedica Osteonics Corp

Inventors

• Servidio Damon J
• Letson G Douglas
• Hanssen Arlen Dale
• Mcgovern Michael A
• Grunden Jennifer

Classifications

• A61F2002/30578

  having apertures, e.g. for receiving fixation screws · CPC title

• A61F2002/30405

  made by screwing complementary threads machined on the parts themselves · CPC title

• A61B17/842

  Flexible wires, bands or straps (A61B17/72, A61B17/82, A61B17/86 take precedence) · CPC title

• A61F2/389 Primary

  Tibial components (A61F2/3868 takes precedence) · CPC title

• A61F2/0811

  Fixation devices for tendons or ligaments · CPC title