Patella fracture reduction plates

Patent metadata

Field	Value
Publication number	US-10327824-B2
Application number	US-201615294528-A
Country	US
Kind code	B2
Filing date	Oct 14, 2016
Priority date	Oct 15, 2015
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

Plates for patella fracture reduction and fracture reduction devices are described. More particularly plates and devices for patella reduction that are universally fit to a front surface or perimeter of a patella and include a plurality of attachment holes disposed therein for receiving a fastener. In some embodiments, the plates include removable tab members.

First claim

What is claimed is:

1. A device, comprising:
a patellar plate body formed from a monolithic material and comprising a central portion and a peripheral portion at least partially surrounding the central portion, the central portion including a plurality of plate attachment holes disposed therein, and the peripheral portion comprising a plurality of tabs, each tab coupled to the central portion via a connector portion, each tab being selectively detachable from the patellar plate body, wherein the patellar plate body is sized in at least a horizontal and a vertical direction to fit a patella.

2. The plate of claim 1 , wherein the central portion comprises a pentagonal shape.

3. The plate of claim 1 , wherein one plate attachment hole or one tab attachment hole accepts a screw having a diameter of between 2.0 mm and 3.0 mm.

4. The plate of claim 1 , wherein the plate body includes at least six attachment holes.

5. The plate of claim 1 , wherein the plate body includes at least eight attachment holes.

6. The plate of claim 1 , wherein the monolithic material comprises titanium or a titanium alloy.

7. The plate of claim 1 , wherein the patellar plate body is less than 3.0 mm thick.

8. The plate of claim 1 , wherein the patellar plate body is less than 2.0 mm thick.

9. The plate of claim 1 , wherein the patellar plate body is less than 1.6 mm thick.

10. The plate of claim 1 , wherein each of the plate attachment holes further comprises a guide insert for aiding in initially securing the patellar plate body to the patella prior to a securing element being inserted through a respective one of the plate attachment holes.

11. The plate of claim 10 , wherein the guide insert is removable prior to inserting the securing element through the respective one of the plate attachment holes.

12. The plate of claim 10 , wherein the securing element is a locking screw or a non-locking screw.

13. The plate of claim 1 , wherein the connector portion has a thickness that is less than 80% of a plate thickness of the patellar plate body, each tab including a tab attachment hole disposed therein.

14. A device comprising:
a curved perimeter plate shaped to be contoured to a perimeter of substantially any patella and defining a plate length between a first end and a second end thereof configured to extend along at least a portion of the perimeter of a patella, the curved perimeter plate comprising a plurality of connection regions positioned along the plate length and a plurality of securing regions positioned along the plate length, wherein at least some of the connection regions are positioned between two adjacent securing regions, and wherein each securing region includes an attachment hole disposed therein.

15. The device of claim 14 , wherein the curved perimeter plate is configured to extend along at least one-fifth of the perimeter of the patella and less than one-third of the perimeter of the patella.

16. The device of claim 14 , wherein the curved perimeter plate is configured to extend along at least one-third of the perimeter of the patella and less than two-thirds of the perimeter of the patella.

17. The device of claim 14 , wherein at least one of the securing regions includes an attachment hole that accepts a screw having a diameter of between 2.0 mm and 3.0 mm.

18. The device of claim 14 , wherein the curved perimeter plate includes at least six attachment holes.

19. The device of claim 14 , wherein the curved perimeter plate comprises titanium or a titanium alloy.

20. The device of claim 14 , wherein each of the attachment holes further comprises a guide insert for aiding in initially securing the curved perimeter plate to the patella prior to a securing element being inserted through a respective one of the attachment holes.

21. The reduction device of claim 20 , wherein the guide insert is removable prior to inserting the securing element through the respective one of the attachment holes.

22. The device of claim 14 , wherein the plate further includes at least two anchor holes disposed therein.

23. The device of claim 22 , further comprising a wire routable from a first anchor hole of the at least two anchor holes through a first length of the patella along a first path disposed along an exterior length of the perimeter of the patella, the exterior length of the perimeter of the patella being positioned on the opposite side of the patella from the plate, and routed back through a second length of the patella along a second path and secured to a second anchor hole of the at least two anchor holes, wherein the wire is selectively tensionable.

24. A system, comprising:
a patellar plate body formed from a monolithic material and comprising a central portion and a peripheral portion surrounding the central portion, the central portion including a plurality of patellar plate attachment holes disposed therein, and the peripheral portion comprising a plurality of tabs, each tab coupled to the central portion via a connector portion that is less than 80% of a plate thickness of the patellar plate body, each tab including a tab attachment hole disposed therein, each tab being selectively detachable from the patellar plate body, wherein the patellar plate body is contoured to fit substantially any patella; and
a curved perimeter plate shaped to be contoured to a perimeter of substantially any patella and defining a plate length between a first end and a second end thereof configured to extend along at least a portion of the perimeter of a patella, the curved perimeter plate comprising a plurality of connection regions positioned along the plate length and a plurality of securing regions positioned along the plate length, wherein at least some of the connection regions are positioned between two adjacent securing regions, and wherein each securing region includes a perimeter plate attachment hole disposed therein.

Assignees

• Biomet Mfg Llc

Inventors

• Ricker Lauren
• Horwitz Daniel S
• Sanders Roy
• Dziadosz Dan
• Giannoudis Peter

Classifications

• 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

• A61B17/1767

  for the patella · CPC title

• A61B17/8061 Primary

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