Translational plate and compressor instrument

Patent metadata

Field	Value
Publication number	US-9579128-B2
Application number	US-201414334991-A
Country	US
Kind code	B2
Filing date	Jul 18, 2014
Priority date	Jul 19, 2013
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A bone plate that is configured to operatively attach to bone includes a first segment, a second segment, and a locking mechanism. The first segment includes a compression notch. The first and second segments are positioned along a longitudinal axis and are movable relative to one another. The locking mechanism inhibits relative axial movement of the first and second segments along the longitudinal axis away from one another. The locking mechanism includes first and second grooves disposed on the second segment. The first and second grooves and the compression slot are configured to receive an instrument to move the first segment towards the second segment along the longitudinal axis.

First claim

What is claimed:

1. A bone plate operatively attachable to bone comprising:
a first segment defining a first compression notch in a top surface thereof;
a second segment defining a second compression notch in a top surface thereof, the first and second segments positioned along a longitudinal axis and movable relative to one another; and
a locking mechanism inhibiting relative axial movement of the first and second segments away from one another along the longitudinal axis, the locking mechanism having first and second grooves defining separate openings through a top surface of the second segment, the locking mechanism including a tongue extending from the first segment, the tongue operatively engaging the first and second grooves to sequentially and releasably lock the first and second segments, thereby inhibiting axial movement of the first and second segments apart from one another while enabling axial movement of the first and second segments towards one another,
wherein the first and second grooves and the first compression notch are configured to receive an instrument to move the first segment towards the second segment along the longitudinal axis.

2. The bone plate of claim 1 , wherein the locking mechanism is releasable to permit axial movement of the first and second segments apart from one another.

3. The bone plate of claim 1 , wherein the first and second segments are configured to attach to vertebral bodies and move toward one another in response to subsidence of the vertebral bodies.

4. The bone plate of claim 1 , wherein the first and second segments include screw holes for the reception of a screw.

5. The bone plate of claim 1 , wherein the locking mechanism further includes a third and a fourth groove disposed on the second segment.

6. The bone plate of claim 5 , wherein each groove is spaced apart at a length along the longitudinal axis from another groove.

7. The bone plate of claim 6 , wherein the length is 1 mm.

8. The bone plate of claim 1 , wherein the first compression notch is placed at a lateral mid-point of the first segment.

9. A surgical system comprising:
a bone plate operatively attachable to bone including:
a first segment defining a first compression notch through a top surface thereof;
a second segment defining a second compression notch in a top surface thereof, the first and second segments positioned along a longitudinal axis and movable relative to one another; and
a locking mechanism inhibiting relative axial movement of the first and second segments axis away from one another along the longitudinal, the locking mechanism having first and second grooves such that each of the first and second grooves defines a separate opening through a top surface of the second segment, the locking mechanism including a tongue extending from the first segment, the tongue operatively engaging the first and second grooves to sequentially and releasably lock the first and second segments, thereby inhibiting axial movement of the first and second segments apart from one another while enabling axial movement of the first and second segments together, the tongue including a tab configured to operatively engage the first and second grooves to sequentially and releasably lock the first and second segments;

a compression instrument including:
a handle;
a first tip sized and configured to engage at least one of the first and second grooves of the locking mechanism; and
a second tip sized and configured to engage the compression notch, the first and second tips moveable relative to one another,

wherein the first and second tips move the first segment towards the second segment along the longitudinal axis when engaged with the at least one of the first and second grooves and the first compression notch, respectively.

10. The system of claim 9 , wherein the first tip of the compression instrument disengages the tab from the at least one of the first and second grooves.

11. The system of claim 9 , wherein the first and second segments are configured to attach to vertebral bodies and are configured to move toward one another in response to subsidence of the vertebral bodies.

12. The system of claim 9 , wherein the first and second segments include screw holes for the reception of a screw.

13. The system of claim 9 , wherein the locking mechanism is releasable to permit axial movement of the first and second segments apart from one another.

14. The system of claim 9 , further including a spacer positioned between the first and second segments of the bone plate to maintain a predefined space between the first and second segments.

15. The system of claim 9 , wherein the first and second grooves are spaced apart 1 mm along the longitudinal axis.

Assignees

• K2M Inc

Inventors

• Abitbol Jean Jacques
• Donald Gordon

Classifications

• A61B17/7059 Primary

  Cortical plates (A61B17/7007, A61B17/7058 take precedence) · CPC title

• A61B17/8009

  the plate having a ratchet · CPC title

• A61B17/8019

  where the means are a separate tool rather than being part of the plate · CPC title

• A61B17/8004

  with means for distracting or compressing the bone or bones · CPC title

• A61B17/8023

  Variable length plates adjustable in both directions · CPC title