Augmented Glenoid and Method for Preparation

Patent metadata

Field	Value
Publication number	US-2016199074-A1
Application number	US-201514594667-A
Country	US
Kind code	A1
Filing date	Jan 12, 2015
Priority date	Jan 12, 2015
Publication date	Jul 14, 2016
Grant date	—

Abstract

A system for augmenting a glenoid in preparation for implantation of a glenoid implant includes an augment guide block. The augment guide block includes a body having a guide slot angularly extending from a first surface to a second surface at an angle α, a plurality of alignment members extending from the first surface of the body that couple the body to the glenoid at locations that correspond to locations where a central peg and a peripheral peg will couple the glenoid implant to the glenoid. The system also includes an augmenting device that is configured to be received within the slot, and that is operable to augment the glenoid at the angle α, wherein the angle α corresponds to a surface of the glenoid implant.

First claim

What is claimed is:

1 . A guide device for augmenting an anatomic structure, comprising:
a body including an upper surface, a lower surface, and a peripheral surface that connects each of the upper and lower surfaces; a guide slot extending between the upper surface and the lower surface of the body at an angle α that is non-parallel and non-perpendicular relative to the upper and lower surfaces, the guide slot configured for receipt of a shaping device that shapes the anatomic structure at the angle α; and a plurality of alignment members extending from the lower surface that removably couple the body to the anatomic structure.

2 . The guide device according to claim 1 , wherein the alignment members include a central alignment member and a peripheral alignment member.

3 . The guide device according to claim 1 , wherein the angle α is in the range of 10 degrees to 75 degrees.

4 . The guide device according to claim 1 , wherein the body is trapezoidal-shaped.

5 . The guide device according to claim 1 , further comprising a handle for orienting the body relative to the anatomic structure.

6 . The guide device according to claim 5 , wherein the body includes a boss for attachment with the handle.

7 . The guide device according to claim 1 , wherein the shaping device is a burr.

8 . The guide device according to claim 1 , wherein the anatomic structure is a glenoid.

9 . The guide device according to claim 1 , wherein the guide slot is linear.

10 . The guide device according to claim 1 , wherein the guide slot includes an inlet and an outlet, and includes radius of curvature between the inlet and the outlet.

11 . A method for performing shoulder arthroplasty, comprising:
preparing the glenoid for receipt of a glenoid implant; attaching an augment guide block to the glenoid, the augment guide block including a guide slot extending between a upper surface and a lower surface of the augment guide block at an angle α that is non-parallel and non-perpendicular relative to the upper and lower surfaces, and that is configured for receipt of a shaping device that shapes the glenoid at the angle α; augmenting the glenoid with the shaping device at the angle α; and attaching the glenoid implant to the glenoid after augmenting the glenoid.

12 . The method according to claim 11 , wherein the angle α is in the range of 10 degrees to 75 degrees.

13 . The method according to claim 11 , further comprising orienting the augment guide block relative to the glenoid using a handle.

14 . The method according to claim 11 , further comprising selecting the augment guide block from a plurality of augment guide blocks that each include a guide slot having a different angle α.

15 . The method according to claim 14 , where the guide slots are linear or curved.

16 . The method according to claim 11 , further comprising determining pre-operatively a portion of the glenoid that requires shaping.

17 . The method according to claim 16 , further comprising selecting the augment guide block from a plurality of augment guide blocks that each include a guide slot having a different angle α based on the portion of the glenoid that requires the shaping.

18 . A system for augmenting a glenoid in preparation for implantation of a glenoid implant including a central peg and a peripheral peg, comprising:
an augment guide block, the augment guide block including a body having a guide slot angularly extending from a first surface to a second opposing surface at an angle α, a plurality of alignment members extending from the first surface of the body that removably couple the body to the glenoid at locations that correspond to locations where the central peg and peripheral peg will couple the glenoid implant to the glenoid, and a boss formed on the second surface; a handle configured to mate with the boss, and operable to orient the augment guide block relative to the glenoid; and an augmenting device configured to be received within the slot, and operable to augment the glenoid at the angle α, wherein the angle α corresponds to a surface of the glenoid implant.

19 . The system according to claim 18 , wherein the alignment members include a central alignment member and a peripheral alignment member.

20 . The system according to claim 18 , wherein the angle α is in the range of 10 degrees to 75 degrees.

21 . The system according to claim 18 , wherein the body is trapezoidal-shaped.

22 . The system according to claim 18 , wherein the augmenting device is a burr.

23 . The system according to claim 18 , wherein the guide slot is linear.

24 . The system according to claim 18 , wherein the guide slot includes an inlet and an outlet, and includes radius of curvature between the inlet and the outlet.

Assignees

• Biomet Mfg Llc

Inventors

• Winslow Nathan A
• Vanasse Thomas M

Classifications

• A61B17/1684

  for the shoulder · CPC title

• A61B17/1739 Primary

  specially adapted for particular parts of the body · CPC title

• A61B17/1778 Primary

  for the shoulder · CPC title

• A61B17/17

  Guides {or aligning means} for drills {, mills, pins or wires} · CPC title

• A61B2017/1778

  Human Necessities · mapped topic