Augmented glenoid components and devices for implanting the same

Patent metadata

Field	Value
Publication number	US-10028838-B2
Application number	US-201414320340-A
Country	US
Kind code	B2
Filing date	Jun 30, 2014
Priority date	Jun 30, 2014
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A glenoid component for coupling to a scapula of a subject includes a body. The body includes an articulation surface adapted to articulate with a humeral component, and the body further includes a distal surface adapted to face the glenoid of the scapula. The distal surface includes a base surface portion adapted to face a first portion of the glenoid. The distal surface further includes an augmented surface portion adapted to face a second portion of the glenoid. The base surface portion and the augmented surface portion define an obtuse angle therebetween.

First claim

What is claimed is:

1. A device for removing bone from a glenoid of a subject, the device comprising:
a frame adapted to be manipulated by a user;
a reaming head comprising a reaming surface;
a drive shaft rotatably supported by and extending through the frame and having a distal end at least partially disposed within the reaming head, the drive shaft rotatable about a drive shaft axis at the distal end; and
a bearing supported by the frame, the bearing capable of providing a rotational axis of the reaming head between a minimum angle defined between the rotational axis and the drive shaft axis and a maximum angle defined between the rotational axis and the drive shaft axis;
wherein the reaming head is rotated about the rotational axis upon rotation of the drive shaft relative to the frame and about the drive shaft axis when the device is operated to remove bone from the glenoid; and
wherein when the bearing provides the maximum angle, a non-zero angle is defined between the rotational axis and the drive shaft axis, an intersection of the rotational axis and the drive shaft axis is disposed within the reaming head.

2. The device of claim 1 , wherein the drive shaft is straight when the non-zero angle is defined between the rotational axis and the drive shaft axis.

3. The device of claim 1 , further comprising a pivot coupling disposed laterally between the reaming head and the distal end of the drive shaft.

4. The device of claim 1 , wherein, in operation, the device is configured such that when the drive shaft rotates the reaming head, the reaming head engages the bone asymmetrically relative to an axis extending longitudinally through the distal end of the drive shaft to ream the bone asymmetrically relative to the axis.

5. The device of claim 1 , further comprising:
a guard member having a distal portion and a proximal portion, the proximal portion coupled to a distal portion of the frame, the guard member configured to inhibit a portion of the reaming surface from engaging bone,
wherein the guard member extends around a lateral edge of the reaming head so that the distal portion of the guard member is disposed distal to at least a portion of a distal face of the reaming head, and
wherein the distal portion of the guard member is at least partially positioned radially inward of the lateral edge of the reaming head.

6. The device of claim 5 , wherein the guard member is generally C-shaped.

7. The device of claim 5 , wherein the distal portion of the guard member is configured to be detachably mounted to a guide post.

8. The device of claim 7 , wherein the distal portion of the guard member comprises an attachment feature configured to be detachably mounted to the guide post.

9. The device of claim 5 , wherein the reaming surface comprises a plurality of reaming elements, each reaming element sharing an edge with another reaming element.

10. The device of claim 5 , wherein the reaming surface comprises a plurality of reaming elements, each reaming element comprising a curved reaming surface.

11. A device for removing bone from a glenoid of a subject, the device comprising:
a frame adapted to be manipulated by a user;
a reaming head comprising a reaming surface;
a cannulated drive shaft rotatably supported by and extending at least partially through the frame, the drive shaft rotatable about a drive shaft axis extending through a distal end of the cannulated drive shaft;
a bearing supported by the frame and configured to provide a first configuration and a second configuration, the distal end of the cannulated drive shaft being positioned distal of the bearing,
wherein in the first configuration, the reaming head is configured to rotate about a first reaming axis having a first orientation relative to the drive shaft axis; and
wherein in the second configuration, the reaming head is configured to rotate about a second reaming axis having a second orientation relative to the drive shaft axis, the second orientation being different from the first orientation.

12. The device of claim 11 , wherein the cannulated drive shaft has a distal opening located adjacent to a distal-most portion of the reaming surface.

13. The device of claim 11 , wherein the cannulated drive shaft has a distal opening located distal of a distal-most portion of the reaming surface.

14. The device of claim 11 , wherein the cannulated drive shaft has a distal opening located distal of an axis of angulation of reaming head.

15. The device of claim 11 , wherein the reaming axis and the drive shaft axis intersect within the reaming head when a non-zero angle is provided between the reaming axis and the drive shaft axis.

16. The device of claim 11 , wherein the cannulated drive shaft is straight in the first configuration and the second configuration.

17. The device of claim 11 , wherein the distal end of the cannulated draft shaft is coupled with the reaming head.

18. The device of claim 11 , further comprising a pivot coupling disposed laterally between the reaming head and the distal end of the cannulated drive shaft.

19. A kit comprising:
the device of claim 11 ; and
a guide pin having a first end configured to be disposed in bone and a second end configured to be received within the cannulated drive shaft.

20. A device for removing bone from a glenoid of a subject, the device comprising:
a frame adapted to be manipulated by a user;
a reaming head comprising a reaming surface;
a drive shaft rotatably supported by and extending through the frame, the drive shaft rotatable about a drive shaft axis; and
a bearing supported by the frame, the bearing capable of providing a rotational axis of the reaming head, a distal end of the drive shaft being positioned distal of the bearing;
wherein the reaming head is rotated about the rotational axis upon rotation of the drive shaft relative to the frame and about the drive shaft axis when the device is operated to remove bone from the glenoid; and
wherein when a non-zero angle is defined between the rotational axis and the drive shaft axis, an intersection of the rotational axis and the drive shaft axis is disposed within the reaming head.

21. The device of claim 20 , wherein the drive shaft is straight when the non-zero angle is defined between the rotational axis and the drive shaft axis.

22. The device of claim 20 , further comprising a pivot coupling disposed laterally between the reaming head and the distal end of the drive shaft.

23. The device of claim 20 , wherein, in operation, the device is configured such that when the drive shaft rotates the reaming head, the reaming head engages the bone asymmetrically relative to an axis extending longitudinally through the distal end of the drive shaft to ream the bone asymmetrically relative to the axis.

24. The device of claim 20 , wherein the distal end of the cannulated draft shaft is coupled with the reaming head.

Assignees

• Tornier Inc

Inventors

• Hodorek Brian C
• Deransart Pierric
• Emerick Bradley Grant
• Terrier Alexandre
• Farron Alain Jean-Pierre
• Courtney Jr Robert
• Geels Travis James

Classifications

• A61F2/4081 Primary

  Glenoid components, e.g. cups · CPC title

• A61B17/1684 Primary

  for the shoulder · CPC title

• A61F2002/4085

  having a convex shape, e.g. hemispherical heads · CPC title

• A61B17/1778

  for the shoulder · CPC title

• A61B17/17

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