Glenoid implant

Patent metadata

Field	Value
Publication number	US-11033400-B2
Application number	US-201916255274-A
Country	US
Kind code	B2
Filing date	Jan 23, 2019
Priority date	Aug 14, 2014
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A glenoid implant is provided and may include a body portion and a stem portion. The stem portion may extend from the body portion along a longitudinal axis. The body portion may include an articular side and a bone-engaging side opposite the articular side. At least a portion of the bone-engaging side may be disposed at a non-parallel angle relative to at least a peripheral edge of the articulation side.

First claim

The invention claimed is:

1. A glenoid implant, comprising:
a body portion including an articular side and a bone-engaging side opposite the articular side, the articular side including an articular side peripheral edge, the bone-engaging side including a bone-engaging surface that is angled with respect to the articular side peripheral edge; and
a stem portion extending from the bone-engaging side of the body portion along a longitudinal axis,
the body portion further including a body peripheral surface that fully extends around an exterior of the body portion between the articular side and the bone-engaging side, the body peripheral surface being tapered inwardly toward the longitudinal axis from the articular side to the bone-engaging side.

2. The glenoid implant of claim 1 , wherein the articular side peripheral edge defines a plane that is orthogonal to the longitudinal axis.

3. The glenoid implant of claim 2 , wherein the bone-engaging surface includes a bone-engaging surface peripheral edge defining a second plane that is angled with respect to the plane defined by the articular side peripheral edge.

4. The glenoid implant of claim 3 , wherein an angle formed between the plane and the second plane is between zero degrees and thirty degrees, non-inclusive.

5. The glenoid implant of claim 1 , wherein the bone-engaging surface is convex.

6. The glenoid implant of claim 1 , wherein the bone-engaging surface is spherical.

7. The glenoid implant of claim 1 , wherein the body portion defines a plurality of apertures that extend through the body portion from the articular side to the bone-engaging side.

8. The glenoid implant of claim 7 , wherein the plurality of apertures includes exactly four apertures that are equally spaced about the longitudinal axis.

9. The glenoid implant of claim 7 , wherein each aperture extends along a respective aperture axis, each aperture axis being angled with respect to the longitudinal axis.

10. The glenoid implant of claim 9 , wherein each aperture axis is angled such that the aperture axis is located a first distance from the longitudinal axis distal to the articular side, the aperture axis is located at a second distance from the longitudinal axis distal to the bone-engaging side, and the first distance is less than the second distance.

11. The glenoid implant of claim 9 , wherein each aperture axis is angled with respect to the longitudinal axis at a same angle.

12. The glenoid implant of claim 9 , wherein a portion of each aperture is internally threaded, each threaded portion being surrounded by unthreaded portions that extend to the articular side and to the bone-engaging side, respectively.

13. The glenoid implant of claim 1 , wherein:
the stem portion includes a proximal portion extending from the bone-engaging side, the proximal portion being cylindrical and coaxial with the longitudinal axis, an outer diameter of the proximal portion having a first diameter value,
the stem portion includes a distal portion extending from the proximal portion, the distal portion being cylindrical and coaxial with the longitudinal axis, an outer diameter of the distal portion having a second diameter value that is less than the first diameter value.

14. A glenoid implant, comprising:
a body portion including an articular side and a bone-engaging side opposite the articular side, the articular side including an articular side peripheral edge, the bone-engaging side including a bone-engaging surface that is convex, spherical, and angled with respect to the articular side peripheral edge; and
a stem portion extending from the bone-engaging side of the body portion along a longitudinal axis;
the body portion defining a plurality of apertures that extend through the body portion from the articular side to the bone-engaging side and are equally spaced about the longitudinal axis, each aperture extending along a respective aperture axis, each aperture axis being angled with respect to the longitudinal axis such that the aperture axis is located a first distance from the longitudinal axis distal to the articular side, the aperture axis is located at a second distance from the longitudinal axis distal to the bone-engaging side, and the first distance is less than the second distance,
the body portion further including a body peripheral surface that fully extends around an exterior of the body portion between the articular side and the bone-engaging side, the body peripheral surface being tapered inwardly toward the longitudinal axis from the articular side to the bone-engaging side.

15. The glenoid implant of claim 14 , wherein each aperture axis is angled with respect to the longitudinal axis at a same angle.

16. A glenoid implant, comprising:
a body portion including an articular side and a bone-engaging side opposite the articular side, the articular side including an articular side peripheral edge, the bone-engaging side including a bone-engaging surface that is convex, spherical, and angled with respect to the articular side peripheral edge; and
a stem portion extending from the bone-engaging side of the body portion along a longitudinal axis;
wherein:
the articular side peripheral edge defines a plane that is orthogonal to the longitudinal axis;
the bone-engaging surface includes a bone-engaging surface peripheral edge defining a second plane that is angled with respect to the plane defined by the articular side peripheral edge;
an angle formed between the plane and the second plane is between zero degrees and thirty degrees, non-inclusive;
body portion further including a cylindrical body peripheral surface that fully extends around an exterior of the body portion between the articular side and the bone-engaging side;
the body peripheral surface is tapered inwardly toward the longitudinal axis from the articular side to the hone-engaging side;
the body portion defines a plurality of apertures that extend through the body portion from the articular side to the bone-engaging side, each aperture extending along a respective aperture axis, each aperture axis being angled with respect to the longitudinal axis such that the aperture axis is located a first distance from the longitudinal axis distal to the articular side, the aperture axis is located at a second distance from the longitudinal axis distal to the bone-engaging side, and the first distance is less than the second distance;
a portion of each aperture is internally threaded, each threaded portion being surrounded by unthreaded portions that extend to the articular side and to the bone-engaging side, respectively.

17. The glenoid implant of claim 16 , wherein:
the stem portion includes a proximal portion extending from the bone-engaging side, the proximal portion being cylindrical and coaxial with the longitudinal axis, an outer diameter of the proximal portion having a first diameter value,
the stem portion includes a distal portion extending from the proximal portion, the distal portion being cylindrical and coaxial with the longitudinal axis, an outer diameter of the distal portion having a second diameter value that is less than the first diameter value.

Assignees

• Biomet Mfg Llc

Inventors

• Kovacs Michael Francis
• Mcdaniel John M
• Winslow Nathan A
• Vanasse Thomas M
• Wack Michael A

Classifications

• A61F2002/30369

  Limited lateral translation of the protrusion within a larger recess · CPC title

• A61F2/4081 Primary

  Glenoid components, e.g. cups · CPC title

• A61F2/30749

  Fixation appliances for connecting prostheses to the body · CPC title

• A61F2002/30331

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

• A61F2002/30881

  Circumferential ribs, flanges or fins · CPC title