Bone implant

Patent metadata

Field	Value
Publication number	US-10772729-B2
Application number	US-201815984718-A
Country	US
Kind code	B2
Filing date	May 21, 2018
Priority date	Aug 23, 2012
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

A bone implant that is elongate along a longitudinal axis includes an implant body including first and second wire segments extending between first and second ends along the axis. The wire segments are spaced from each other along a lateral direction that is perpendicular to the longitudinal axis to define first and second apertures each extending through the implant body along respective directions that are offset from the axis. At least one of the first and second apertures is configured to receive a bone fixation element for securing the implant to bone. The first and second wire segments abut each other at least at one end of the first and second apertures. The first and second wire segments define respective first and second prongs each located at the second end and configured to be inserted within bone so as to further secure the bone implant to bone.

First claim

The invention claimed is:

1. A bone implant elongate along a longitudinal axis, the bone implant comprising:
an implant body including first and second wire segments extending from a first end to a second end of the implant body along a longitudinal direction oriented along the longitudinal axis, the first and second wire segments spaced from each other along a lateral direction that is substantially perpendicular to the longitudinal direction so as to define a first aperture and a second aperture each extending through the implant body along respective directions that are each offset from the longitudinal and lateral directions, wherein the first and second wire segments abut each other at least at one end of each of the first and second apertures, and the first and second wire segments define respective first and second prongs each located at the second end and configured to be inserted within at lease one first bone fragment so as to secure the bone implant to the at least one first bone fragment,
wherein the second aperture is located along the longitudinal axis between the first aperture and the second end of the implant body, the second aperture is elongate along the longitudinal direction, and the second aperture is configured to receive a bone fixation element so as to secure the bone implant to a second bone fragment, wherein the second aperture is a compression aperture configure to cause, responsive to advancement of a head of the bone fixation element through the second aperture toward the second bone fragment, the bone implant to translate along the longitudinal direction thereby reducing a distance between the at least one first bone fragment and the second bone fragment.

2. The bone implant of claim 1 , wherein the first and second prongs define respective terminal ends of the first and second wire segments.

3. The bone implant of claim 1 , wherein the first and second prongs each extend along a respective direction offset from the longitudinal and lateral directions.

4. The bone implant of claim 3 , wherein the first and second prongs extend parallel to one another, diverge from one another away from the longitudinal axis, or converge toward one another away from the longitudinal axis.

5. The bone implant of claim 1 , wherein the first wire segment includes a portion located at the second end that extends outwardly from the longitudinal axis along the lateral direction to the first prong, and the second wire segment includes a portion located at the second end that extends outwardly from the longitudinal axis along the lateral direction to the second prong.

6. The bone implant of claim 1 , wherein the bone implant is configured to bridge the at least one first bone fragment and the second bone fragment for supporting bone healing.

7. The bone implant of claim 1 , wherein the first aperture is located at the first end of the implant body.

8. The bone implant of claim 1 , wherein the first and second wire segments define a first neck at the at least one end of the first aperture, and a second neck at the at least one end of the second aperture, and the first and second wire segments are attached to each other at the first neck and the second neck.

9. The bone implant of claim 8 , wherein the first and second wire segments are at least one of welded, soldered, or glued to each other at the first and second necks.

10. The bone implant of claim 8 , wherein the at least one end of the second aperture is a first end, and the first and second wire segments further attach to each other at a second end of the second aperture opposite the first end of the second aperature.

11. The bone implant of claim 10 , wherein one or both of the first and second ends of the second aperture is configured to receive the bone fixation element so as to secure the bone implant to bone.

12. The bone implant of claim 1 , wherein the first and second wire segments define a third aperture located along the longitudinal axis between the second aperture and the second end of the implant body, and the third aperture is configured to receive a bone fixation element so as to secure the bone implant to bone.

13. The bone implant of claim 1 , wherein the first and second apertures each define a central axis, and the first and second wire segments are configured to be bent so as to adjust an angle of the respective central axis with respect to the longitudinal axis.

14. The bone implant of claim 1 , wherein the first and second wire segments are mirror images of each other.

15. The bone implant of claim 1 , wherein the first and second wire segments both extend along a shared plane that extends along the longitudinal direction and the lateral direction.

16. The bone implant of claim 1 , wherein the first and second wire segments define respective first and second side walls that are spaced from each other so as to define the first and second apertures.

17. The bone implant of claim 1 , wherein the first and second wire segments are integral and monolithic with each other to form a single wire.

18. A bone implant elongate along a longitudinal axis, the bone implant comprising:
an implant body including first and second wire segments extending from a first end to a second end of the implant body along a longitudinal direction oriented along the longitudinal axis, the first and second wire segments spaced from each other along a lateral direction that is substantially perpendicular to the longitudinal direction so as to define a first aperture and a second aperture each extending through the implant body along respective directions that are each offset from the longitudinal and lateral directions, at least one of the first and second apertures configured to receive a bone fixation element so as to secure the bone implant to bone, wherein the first and second wire segments abut each other at least at one end of each of the at least two apertures, and the first and second wire segments define respective first and second prongs each located at the second end and configured to be inserted within bone so as to further secure the bone implant to bone,
wherein the first and second wire segments define respective first and second side walls that are spaced from each other so as to define the first and second apertures, and portions of the first and second side walls within at least one of the first and second apertures define threads configured to engage threads on the head of a bone fixation element, for securing the bone fixation element to the implant body.

Assignees

• Depuy Synthes Products Inc

Inventors

• Appenzeller Andreas
• Fluri Daniel

Classifications

• A61B17/80 Primary

  Cortical plates {, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates} · CPC title

• A61B17/8061

  specially adapted for particular bones (A61B17/70 and A61B17/74 take precedence) · CPC title

• A61B17/809

  with bone-penetrating elements, e.g. blades or prongs (bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233) · CPC title

• A61B17/8085

  with pliable or malleable elements or having a mesh-like structure, e.g. small strips (A61B17/8071, A61B17/8076 take precedence) · CPC title

• A61F2/28 Primary

  Bones · CPC title