Prosthesis for a fractured long bone

Patent metadata

Field	Value
Publication number	US-11890201-B2
Application number	US-202016989223-A
Country	US
Kind code	B2
Filing date	Aug 10, 2020
Priority date	Jan 31, 2018
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

The invention concerns a prosthesis comprising: a stem part comprising: a rod, configured for being inserted into a medullary cavity of a diaphyseal fragment of a fractured long bone, for securing the stem part to the diaphyseal fragment, and an epiphyseal end, fixedly secured to the rod by means of at least one linker leg of the stem part, so that a gap is formed between the epiphyseal end and the rod along said at least one linker leg; and an implant distinct from the stem part and comprising: an internal part located at least partially within the gap, and at least one fastener for fastening epiphyseal fragments of the fractured long bone to the stem part, said at least one fastener being secured to the internal part.

First claim

What is claimed is:

1. A prosthesis for a fractured long bone, the prosthesis comprising:
a rod, configured for being inserted into a medullary cavity of a diaphyseal fragment of the fractured long bone, for securing the prosthesis to the diaphyseal fragment;
an epiphyseal end, fixedly secured to the rod by means of a plurality of linker legs, so that a gap is formed between the epiphyseal end and the rod along the plurality of linker legs; and
a plurality of barbs spaced apart by grooves on a proximal portion of the prosthesis, wherein the barbs protrude outwardly from a lateral side of the prosthesis.

2. The prosthesis of claim 1 , further comprising an internal part and a stem part comprising the rod, the epiphyseal end, and the gap, wherein the internal part is configured to be positioned at least partially within the gap in the stem part.

3. The prosthesis of claim 1 , further comprising a stem part comprising the rod and an implant that is separable from the stem part, the plurality of barbs being disposed on a lateral surface of the implant.

4. The prosthesis of claim 1 , further comprising a suture securing portion formed in one of the plurality of linker legs, the suture securing portion being disposed adjacent to the epiphyseal end.

5. The prosthesis of claim 4 , wherein the suture securing portion is a through-hole.

6. The prosthesis of claim 1 , further comprising a hole formed in the proximal portion of the prosthesis for positioning a screw therein, wherein the screw is configured to be oriented along an anterior or posterior direction.

7. A prosthesis for a fractured long bone, the prosthesis comprising:
a rod, configured for being inserted into a medullary cavity of a diaphyseal fragment of the fractured long bone, for securing the prosthesis to the diaphyseal fragment;
an epiphyseal end, fixedly secured to the rod by means of a plurality of linker legs, so that a gap is formed between the epiphyseal end and the rod along the plurality of linker legs; and
a plurality of grooves formed in a lateral side of the epiphyseal end of the prosthesis.

8. The prosthesis of claim 7 , further comprising an implant, the plurality of grooves being formed on a lateral side of the implant opposite a medial side of the implant, the medial side of the implant being insertable into an opening on a lateral side of the prosthesis.

9. A system, comprising the prosthesis of claim 7 and further comprising a screw configured to extend from a first exterior surface of a humerus along a screw trajectory through the prosthesis to a second exterior surface of the humerus opposite the first exterior surface.

10. The system of claim 9 , wherein the screw is configured to extend from an anterior exterior surface of the humerus through the prosthesis in an anterior-to-posterior direction to a posterior exterior surface of the humerus.

11. The system of claim 9 , wherein the screw trajectory is disposed in a proximal portion of the prosthesis.

12. The system of claim 9 , wherein the screw trajectory is within a portion of the gap.

13. A method for repairing a fractured humerus, comprising:
providing a prosthesis comprising:
a rod, that is configured for being inserted into a medullary cavity of a diaphyseal fragment of the fractured long bone;
an epiphyseal end opposite to the rod, the epiphyseal end being fixedly secured to the rod by means of a plurality of linker legs, so that a gap is formed between the epiphyseal end and the rod along the plurality of linker legs; and
a plurality of barbs spaced apart by a plurality of grooves on a proximal portion of the prosthesis, wherein the barbs protrude outwardly from a lateral side of the prosthesis;

inserting the rod into a medullary cavity of a diaphyseal fragment of the humerus;
fastening one or more epiphyseal fragments of the humerus to the prosthesis by placing the one or more epiphyseal fragments of the humerus over the plurality of grooves; and
tightening a suture disposed around or through the one or more epiphyseal fragments against a surface opposite the lateral side of the prosthesis.

14. The method of claim 13 , wherein the surface comprises a concave surface of the epiphyseal end.

15. The method of claim 14 , wherein the concave surface comprises a portion of a through-hole.

16. The method of claim 15 , wherein the through-hole is formed in one of the linker legs.

17. The method of claim 13 , further comprising advancing a screw along an anterior-posterior trajectory through the prosthesis.

18. The method of claim 17 , wherein the anterior-posterior trajectory is disposed through a proximal portion of the prosthesis.

19. The method of claim 17 , further comprising advancing the screw through an implant disposed in the gap of the prosthesis along the trajectory.

Assignees

• Tornier Sa

Inventors

• Boileau Pascal
• Cardon Jean-Emmanuel
• Claizergues Bertrand
• Coulange Vincent
• Dassonville Benjamin
• Gaborit Vincent

Classifications

• A61F2310/00023

  Titanium or titanium-based alloys, e.g. Ti-Ni alloys · CPC title

• A61F2220/0041

  using additional screws, bolts, dowels or rivets, e.g. connecting screws · CPC title

• A61F2220/0016

  with sharp anchoring protrusions, e.g. barbs, pins, spikes · CPC title

• A61F2210/0004

  bioabsorbable · CPC title

• A61F2/32

  for the hip · CPC title