Orthopedic Plating Assembly For Bone Fixation and Subsidence

• US 20110190770A1
• Filed: 02/02/2010
• Published: 08/04/2011
• Est. Priority Date: 02/02/2010
• Status: Active Grant

• Current Assignee: Globus Medical, Inc.
• Original Assignee: Globus Medical, Inc.
• Inventors: Suh, Sean
• Granted Patent: US 8,882,814 B2
• Time in Patent Office: Days
• US Class Current: 606/70
• CPC Class Codes: A61B 17/7059 Cortical plates A61B17/7007, A61B17/7058 take precedence
• CPC Class Codes: A61B 17/80 Cortical plates , i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
• CPC Class Codes: A61B 17/8033 having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
• CPC Class Codes: A61B 17/8042 the additional component being a cover over the screw head
• CPC Class Codes: A61B 17/8047 wherein the additional element surrounds the screw head in the plate hole A61B17/8052 takes precedence
• CPC Class Codes: A61B 17/8605 Heads, i.e. proximal ends projecting from bone
• CPC Class Codes: A61B 2017/564 Methods for bone or joint treatment

Abstract

In an exemplary embodiment, the present invention provides an orthopedic plating assembly for bone fixation that includes an orthopedic plate and orthopedic anchors that can accommodate subsidence in the vertebral bodies as well as prevent the anchors from “backing out” of their installed position. The assembly, in one embodiment, includes an orthopedic plate and at least one orthopedic anchor, the orthopedic anchor capable of rotating and translating with respect to the plate. The assembly further includes a first blocking member and a second blocking member, the blocking members cooperate to prevent the at least one orthopedic anchor from uninstalling from an installed position.

Claims

1. An orthopedic plate assembly for bone fixation, comprising:

at least one orthopedic anchor;

an orthopedic plate having at least one opening, the at least one opening configured and dimensioned to receive the orthopedic anchor;

a first blocking member, the first blocking member having a blocking position and a non-blocking position; and

a second blocking member, the second blocking member removably connected to the orthopedic plate and positioned to cover at least a portion of the opening,

wherein the orthopedic anchor is able to pivot and translate with respect to the orthopedic plate when in an installed position in the opening, and

wherein the first blocking member and the second blocking member cooperate to prevent the at least one orthopedic anchor from uninstalling from the installed position when the first blocking member is in the blocking position.

2. The assembly of claim 1, further comprising at least one carriage plate, the carriage plate having at least one opening for receiving at least one orthopedic anchor.

3. The assembly of claim 2, wherein the orthopedic plate has at least one slot and wherein the carriage plate is slideably received in the slot of the orthopedic plate.

4. The assembly of claim 3, wherein carriage plate is captured in the slot of the orthopedic plate.

5. The assembly of claim 2, wherein the carriage plate has at least one blocking member having a blocking position and a non-blocking position.

6. The assembly of claim 1, wherein the opening is elongated.

7. The assembly of claim 1, wherein the first blocking member includes an enlarged head portion and a cutout portion.

8. The assembly of claim 7, wherein first blocking member is rotatable from the blocking position where the head portion faces the opening of the orthopedic plate to the unblocking position where the cutout portion faces the opening in the orthopedic plate.

9. The assembly of claim 1, wherein the second blocking member is removably connected to the orthopedic plate includes via at least one screw.

10. The assembly of claim 1, wherein the orthopedic anchor has a head portion, a shank portion, and threads that surround at least a portion of the shank portion 18 and wherein the head portion is in part generally spherical and includes an opening for receiving an instrument capable of engaging and driving the anchor into bone tissue.