Prosthetic having a modular soft tissue fixation mechanism

Patent metadata

Field	Value
Publication number	US-9833326-B2
Application number	US-201615161590-A
Country	US
Kind code	B2
Filing date	May 23, 2016
Priority date	Apr 13, 2010
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A method and apparatus for coupling soft tissue to a prosthetic is disclosed. Soft tissue attachment pads having porous metal attachment regions and suture accepting holes are selectively positioned onto an implantable prosthetic to provide coupling locations.

First claim

What is claimed is:

1. An orthopedic implant comprising:
an implant having an articulating surface and a bone attachment region forming a complete functional implant configured to be implanted into a patient, the implant having a plurality of apertures; and
a soft tissue attachment pad having a porous coating on a soft tissue engaging surface, said soft tissue attachment pad operable to be attached to said implant at a selected one of the plurality of apertures with a locking mechanism such that the soft tissue attachment pad is selectively positionable at different locations on the implant, wherein said locking mechanism is configured to prevent movement of the soft tissue attachment pad with respect to the implant and wherein said complete implant is configured to be implanted into the bone in a first functional configuration with the soft tissue attachment pad and in a second functional configuration without the soft tissue attachment pad, wherein the soft tissue attachment pad comprises a flange defining a suture accepting bore therethrough.

2. The orthopedic implant according to claim 1 wherein the locking mechanism is set off with respect to a center line of the soft tissue attachment pad to allow selective positioning of the soft tissue attachment pad with respect to the implant.

3. The orthopedic implant according to claim 1 wherein the flange defines a plurality of suture bores.

4. The orthopedic implant according to claim 1 wherein said bone attachment region is an exterior cylindrical surface which defines an axis, said suture accepting bore being parallel to the axis.

5. The orthopedic implant according to claim 1 wherein the soft tissue attachment pad has a plate defining a suture accepting bore and a porous metal pad disposed on the plate.

6. A prosthetic comprising:
a head portion having an articulating surface;
a base member having a bone engaging surface defining a taper, said bone engaging surface coupled directly to said head portion to form a complete implantable prosthetic, said base member defining an outer fixation surface, said base member having a plurality of locking mechanisms; and
a selectable attachable soft tissue attachment pad having a porous metal soft tissue fixation pad and defining a suture accepting bore, said attachable soft tissue attachment pad having a coupling mechanism, wherein said coupling mechanism functions to couple the soft tissue attachment pad to the outer fixation surface at a selected one of the plurality of locking mechanisms such that the soft tissue attachment pad is selectively positionable at different locations on the implant, wherein said locking mechanism is configured to prevent movement of the soft tissue attachment pad with respect to the base member.

7. The prosthetic according to claim 6 wherein said locking mechanism is a threaded fastener.

8. The prosthetic according to claim 6 wherein the soft tissue attachment pad comprises a generally planar plate having a planar fixation coupling surface.

9. The prosthetic according to claim 8 wherein the planar fixation coupling surface is configured to be coupled to a planar surface on the base member.

10. The prosthetic according to claim 8 further comprising an intermediary member, said intermediary member defining a fastener accepting aperture therethrough, and having an intermediary member planar bearing surface configured to interface with the planar fixation surface and an intermediary member curved bearing surface configured to interface with a base member convex surface.

11. The prosthetic according to claim 8 wherein a planar fixation coupling surface defines a fastener accepting bore.

12. The prosthetic according to claim 8 wherein the general planar plate is circular.

13. The prosthetic according to claim 12 wherein the plate defines a central portion having the porous metal soft tissue attachment pad.

14. The prosthetic according to claim 13 wherein the plate defines a circular rim.

15. The prosthetic according to claim 14 wherein the circular rim defines a plurality of suture accepting bores.

16. The prosthetic according to claim 6 comprising a plurality of locking mechanisms disposed on the outer fixation surface.

17. A method for implanting an orthopedic prosthetic comprising:
selecting an appropriately sized prosthetic having a plurality of attachment apertures;
determining if soft tissue fixation to the prosthetic is necessary;
attaching a soft tissue attachment pad having a porous metal portion to the prosthetic at a selected one of the plurality of attachment apertures;
implanting said prosthetic;
coupling soft tissue to the porous metal portion; and
passing a suture through the soft tissue and passing the suture through an aperture defined in the soft tissue attachment pad.

18. The method for implanting an orthopedic device according to claim 17 wherein attaching said soft tissue attachment pad to said prosthetic includes coupling said soft tissue attachment pad to an exterior surface of the prosthetic.

Assignees

• Biomet Mfg Llc

Inventors

• Porter Joshua R
• Winslow Nathan A
• Kneisl Jeffrey
• Sperling John W

Classifications

• A61F2002/30769

  madreporic · CPC title

• A61F2/3804

  for elbows · CPC title

• A61F2002/4011

  including proximal or total replacement of the humerus · CPC title

• A61F2002/30507

  using a threaded locking member, e.g. a locking screw or a set screw · CPC title

• A61F2/32

  for the hip · CPC title