Fixation devices and prostheses for soft tissue connection to the same

Patent metadata

Field	Value
Publication number	US-12409040-B2
Application number	US-202318514281-A
Country	US
Kind code	B2
Filing date	Nov 20, 2023
Priority date	Jul 31, 2018
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

An orthopedic assembly includes a tibial prosthesis that includes a body that defines an anterior side and a posterior side. The body further incudes 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 joint prosthesis; and
a filamentary component having an annular portion and an elongate portion, the annular portion defining an opening that extends from a first side of the annular portion to a second side of the annular portion opposite the first side, and the elongate portion extending from the first side of the annular portion,
wherein the opening is configured to receive a portion of the joint prosthesis therein such that a longitudinal axis of the joint prosthesis passes through the opening and is aligned with a central longitudinal axis of the opening,
wherein when the joint prosthesis is received in the opening, a length of the elongate portion along the longitudinal axis of the joint prosthesis is greater than a length of the annular portion extending from the first side to the second side along the longitudinal axis of the joint prosthesis,
wherein the length of the elongated portion of the filamentary component extends beyond a proximal end of the joint prosthesis in a direction away from the annular portion,

the annular portion being in between the proximal end of the joint prosthesis and a distal end of the joint prosthesis,
wherein an inner face of the elongated portion of the filamentary component comprises a soft-tissue-engaging surface, and
wherein when the joint prosthesis is received in the opening, the elongated portion of the filamentary component is conically curved around a region of the joint prosthesis such that the orthopedic assembly is configured to sandwich soft tissue between the elongated portion and the joint prosthesis to attach the soft tissue therebetween.

2. The orthopedic assembly of claim 1 , wherein the filamentary component is made from a material including one or more of a synthetic polymer, a bioresorbable fiber, a ceramic, a biological material, and a pharmacological agent such that the filamentary component is configured to attach to soft tissue.

3. The orthopedic assembly of claim 1 , wherein the portion of the joint prosthesis is received in the opening such that the filamentary component is restrained from withdrawal from the portion in one direction along the longitudinal axis.

4. The orthopedic assembly of claim 1 , wherein the annular portion flares outwardly along its length in a direction from a free end of the filamentary component toward the elongate portion.

5. The orthopedic assembly of claim 4 , wherein, when assembled, an inner surface of the annular portion is disposed against a tapered outer surface of the joint prosthesis.

6. The orthopedic assembly of claim 1 , wherein the joint prosthesis is either a humeral or a femoral joint prosthesis including a head, a body and a stem such that when the humeral or the femoral joint prosthesis is received in the filamentary component, the filamentary component is restrained from withdrawal from the filamentary component by the head.

7. The orthopedic assembly of claim 1 , wherein the joint prosthesis is a proximal tibial prosthesis including a metaphyseal portion and a diaphyseal portion extending from the metaphyseal portion, the metaphyseal portion having an anterior side and a posterior side arranged such that when the proximal tibial prosthesis is received in the filamentary component, the elongate portion extends along the anterior side of the metaphyseal portion.

8. The orthopedic assembly of claim 7 , further comprising a suture extending through a suture hole of the metaphyseal portion and through the elongated portion of the filamentary component,
wherein the elongated portion of the filamentary component is disposed adjacent to the suture hole extending through the metaphyseal portion.

9. An orthopedic system comprising:
a first joint prosthesis including suture holes and having a first end configured to engage with a bone and a second end opposite the first end, the second end configured to interface with a second joint prosthesis; and
a filamentary component having a first portion and a second portion, the first portion defining a sleeve having a first length extending from a first side of the sleeve to a second side of the sleeve opposite the first side along a longitudinal axis of the first joint prosthesis and configured to receive the first joint prosthesis, and the second portion having a second length extending from the first side of the sleeve along the longitudinal axis, the second portion being configured to attach to soft tissue,
wherein the second length is greater than the first length,
wherein the second portion extends beyond a proximal end of the first joint prosthesis in a direction away from the first portion, and the first portion is positioned between the proximal end and a distal end of the first joint prosthesis,
wherein an inner face of the second portion of the filamentary component comprises a soft-tissue-engaging surface, and
wherein the orthopedic system is configured to receive soft tissue between the filamentary component and the joint prosthesis such that the soft tissue is disposed adjacent to the suture holes of the joint prosthesis.

10. The orthopedic assembly of claim 9 , wherein the filamentary component includes a plurality of layers of a mesh material.

11. The orthopedic assembly of claim 10 , wherein each layer of the plurality of layers is connected to an adjacent layer by at least one seam formed by heat.

12. The orthopedic assembly of claim 9 , wherein the first joint prosthesis is a femur prosthesis that includes a stem and a head, the stem extending from the head and being configured to be inserted into an intramedullary canal of a femur, and the head having a diameter larger than that of the sleeve.

13. The orthopedic assembly of claim 12 , wherein the sleeve tapers outwardly in a manner that corresponds with a conically tapered body portion of the femur prosthesis in between the stem and the head such that when assembled, the sleeve bears against the body portion.

14. The orthopedic assembly of claim 9 , wherein the second length of the second portion of the filamentary component is greater than a diameter of the sleeve at the first side.

Assignees

• Howmedica Osteonics Corp

Inventors

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

Classifications

• A61F2/367

  Proximal or metaphyseal parts of shafts (trochanteric devices connected to said proximal parts A61F2/30739) · CPC title

• A61F2/0811

  Fixation devices for tendons or ligaments · CPC title

• A61F2002/3092

  having an open-celled or open-pored structure · CPC title

• A61F2002/30405

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

• A61F2002/30461

  sutured, ligatured or stitched · CPC title