Humeral and glenoid articular surface implant systems and methods

Patent metadata

Field	Value
Publication number	US-11478358-B2
Application number	US-202016817440-A
Country	US
Kind code	B2
Filing date	Mar 12, 2020
Priority date	Mar 12, 2019
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

One embodiment of the present disclosure provides a humeral implant. The humeral implant includes a tray including a body defining a bone facing recess and a liner recess, said bone facing recess including a ring surface and a convex surface, wherein the ring surface has a profile substantially corresponding to a profile of an outer ring of bone in an excision site of a patient; and wherein said convex surface has a profile substantially corresponding to a profile of a concave socket formed in the excision site. The humeral implant also includes a liner including a body defining a load bearing surface and a tray interface surface, said tray interface surface being configured to be at least partially received in said liner recess of said tray such that said implant is coupled to said tray.

First claim

What is claimed is:

1. A humeral implant comprising:
a tray including a body defining a bone facing recess and a liner recess, said bone facing recess including a ring surface and a convex surface, wherein the ring surface has a profile substantially corresponding to a profile of an outer ring of bone in an excision site of a patient; and wherein said convex surface has a profile substantially corresponding to a profile of a concave socket formed in the excision site;
a liner including a body defining a load bearing surface and a tray interface surface, said tray interface surface being configured to be at least partially received in said liner recess of said tray such that said liner is coupled to said tray; and
an anchor configured to be secured to bone within the excision site, said anchor including a first fixation element; wherein the tray further comprises a second fixation element configured to be coupled to said first fixation element to secure said tray to said anchor and wherein the first fixation element of the anchor includes a female tapered recess and the second fixation element includes a male taper post to engage the female taper recess.

2. The humeral implant of claim 1 , wherein the anchor has a body portion having a tapered profile.

3. The humeral implant of claim 1 , wherein the anchor has a body portion including one or more retaining elements disposed on an outer portion of the body portion to engage the patient's humeral bone within the excision site; wherein the one or more retaining elements is selected from the group of threads, protrusions, ribs, barbs, and/or recesses.

4. The humeral implant of claim 1 , wherein an internal side of the ring surface is configured to receive the outer ring of bone such that the outer ring of bone is bound by the ring surface.

5. The humeral implant of claim 1 , wherein the tray further includes a peripheral region between the ring surface and the convex surface, the peripheral region is configured to receive a rim portion of the outer ring of bone in the excision site of the patient.

6. An implant system comprising:
a humeral implant comprising:
a tray including a body defining a bone facing recess and a liner recess, said bone facing recess including a ring surface and a convex surface, wherein the ring surface has a profile substantially corresponding to a profile of an outer ring of bone in an excision site of a patient; and wherein said convex surface has a profile substantially corresponding to a profile of a concave socket formed in the excision site;
a liner including a body defining a humeral load bearing surface and a tray interface surface, said tray interface surface being configured to be at least partially received in said liner recess of said tray such that said liner is coupled to said tray; and
an anchor configured to be secured to bone within the excision site, said anchor including a first fixation element; wherein the tray further comprises a second fixation element configured to be coupled to said first fixation element to secure said tray to said anchor and wherein the first fixation element of the anchor includes a female tapered recess and the second fixation element includes a male taper post to engage the female taper recess; and

a glenoid implant comprising:
a baseplate including a body defining a bone facing surface and an implant facing surface; the bone facing surface having a profile substantially inversely corresponding to a profile of a glenoid implant site; and
an implant having a glenoid load bearing surface and a baseplate interface surface;
the glenoid load bearing surface having a shape to cooperate with the humeral load bearing surface of the liner.

7. The implant system of claim 6 , wherein the anchor has a body portion having a tapered profile.

8. The implant system of claim 6 , wherein the anchor has a body portion including one or more retaining elements disposed on an outer portion of the body portion to engage the patient's humeral bone within the excision site; wherein the one or more retaining elements is selected from the group of threads, protrusions, ribs, barbs, and/or recesses.

9. The implant system of claim 6 , wherein an internal side of the ring surface is configured to receive the outer ring of bone such that the outer ring of bone is bound by the ring surface.

10. The implant system of claim 6 , wherein the tray further includes a peripheral region between the ring surface and the convex surface, the peripheral region is configured to receive a rim portion of the outer ring of bone in the excision site of the patient.

11. The implant system of claim 6 , wherein the humeral load bearing surface of the liner is a concave surface and the glenoid load bearing surface of the implant is a convex surface.

12. The implant system of claim 6 , wherein the baseplate further comprises an alignment element protrusion on the implant facing surface.

13. The implant system of claim 12 , wherein the implant further comprises a recess formed in the baseplate interface surface; wherein the recess is dimensioned to receive the alignment element protrusion to secure the implant to the baseplate.

14. The implant system of claim 6 , wherein the implant and baseplate are configured to be coupled together using a friction fit.

Assignees

• Arthrosurface Inc

Inventors

• Miniaci Anthony
• Ek Steven W
• Murphy Wiliam B
• Brightman Timothy H

Classifications

• A61F2002/30873

  Threadings machined on non-cylindrical external surfaces · CPC title

• A61F2002/30331

  made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit · CPC title

• A61B17/1778

  for the shoulder · CPC title

• A61F2/4081

  Glenoid components, e.g. cups · CPC title

• A61F2002/4022

  having a concave shape, e.g. hemispherical cups · CPC title