Spinous process plate fixation assembly

Patent metadata

Field	Value
Publication number	US-10335207-B2
Application number	US-201615392763-A
Country	US
Kind code	B2
Filing date	Dec 28, 2016
Priority date	Dec 29, 2015
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

A spinous process plate fixation assembly is provided that has a pin plate including a first central aperture and a pin plate interior surface. The assembly has a lock plate including a second central aperture and a lock plate interior surface opposingly facing the pin plate interior surface. The interior surfaces have a pluralities of spikes extending therefrom. A pin receptacle is disposed within the pin plate and is configured to receive a lock pin. A pivoting lock mechanism is disposed within the lock plate. A connector shaft extends from the pin plate to the lock plate and passes through the first central aperture and the second central aperture. The connector shaft includes a pin side configured to receive the lock pin, and a lock side opposite the shaft side, the lock side configured to operatively engage the pivoting lock mechanism so as to secure the plates and the shaft.

First claim

The following is claimed:

1. A spinous process plate fixation assembly, comprising:
a pin plate including a first central aperture and a pin plate interior surface, and a first plurality of spikes extending from the pin plate interior surface;
a lock plate including second central aperture and a lock plate interior surface opposing the pin plate interior surface, and a second plurality of spikes extending from the lock plate interior surface;
a pin receptacle disposed within the pin plate, the pin receptacle configured to receive a lock pin;
a pivoting lock mechanism disposed within the lock plate, wherein the pivoting lock mechanism includes:
a threaded channel disposed within a top surface of the lock plate;
a lock chamber disposed within the lock plate;
a pivoting lock disposed within the lock chamber and including a lock slot in communication with the threated channel , wherein the pivoting lock includes a connector shaft passage configured to receive the lock side of the connector shaft, wherein the pivoting lock includes a compression slot proximal to the lock slot and opposite from a compression flat configures for orientation when the pivoting lock is compressed; and

a connector shaft extending from the pin plate to the lock plate and passing through the first central aperture and the second central aperture, the connector shaft including:
a pin side configured to receive the lock so as to secure the pin within the pin receptacle; and
a lock side opposite the pin side, the lock side configured to operatively engage the pivoting lock mechanism so as to pivotally secure the lock side with the pivoting lock mechanism.

2. The spinous process plate fixation assembly of claim 1 , further comprising a lock flange configured to secure the pivoting lock within the lock chamber.

3. The spinous process plate fixation assembly of claim 1 , wherein the pivoting lock includes an exterior toroidal surface and an interior friction fit surface.

4. The spinous process plate fixation assembly of claim 1 , wherein the compression slot is configured to be reduced when the pivoting lock is compressed.

5. The spinous process plate fixation assembly of claim 1 , wherein each of the first plurality of spikes and the second plurality of spikes include spikes having cuboid-shaped bases and pyramid-shaped tips.

6. The spinous process plate fixation assembly of claim 1 , wherein each of the pin plate and the lock plate include at least two offset flat portions including the first plurality of spikes and the second plurality of spikes, respectively.

7. The spinous process plate fixation assembly of claim 1 , wherein each of the first plurality of spikes and the second plurality of spokes include minor spikes and major spikes.

8. The spinous process plate fixation assembly of claim 1 , each of the pin plate and the lock plate include at least two staggered flat portions.

9. The spinous process plate fixation assembly of claim 1 , wherein each of the pin plate and the lock plate include an exterior face opposite of the pin plate interior surface and the lock plate interior surface, respectively, and each of the exterior faces include at least two compressor alignment slots disposed on opposite sides of the connector shaft.

10. A spinous process plate fixation assembly, comprising:
a pin plate comprising a pin plate interior surface, and a first plurality of spikes extending from the pin plate interior surface;
a lock plate including a lock plate aperture and a lock plate interior surface opposing the pin plate interior surface, and a second plurality of spikes extending from the lock plate interior surface;
a pivoting lock mechanism disposed within the lock plate, wherein the pivoting lock mechanism includes:
a threaded channel disposed within a top surface of the lock plate;
a lock chamber disposed within the lock plate;
a pivoting lock disposed within the lock chamber and including a lock slot in communication with the threaded channel, wherein the pivoting lock includes a connector shaft passage configured to receive the lock side of the connector shaft, wherein the pivoting lock includes a compression slot proximal to the lock slot and opposite from a compression flat configured for orientation when the pivoting lock is compressed; and

a connector shaft extending from the pin plate to the lock plate and passing through the lock plate aperture, the connector shaft including:
a pin side secured to the pin plate; and
a lock side opposite the pin side, the lock side configured to operatively engage the pivoting lock mechanism so as to pivotally secure the lock side with the pivoting lock mechanism.

11. The spinous process plate fixation assembly of claim 10 , further comprising a lock flange configured to secure the pivoting lock within the lock chamber.

12. The spinous process plate fixation assembly of claim 10 , wherein the pivoting lock includes an exterior toroidal surface and an interior friction fit surface.

13. The spinous process plate fixation assembly of claim 10 , wherein the compression slot is configured to be reduced when the pivoting lock is compressed.

14. The spinous process plate fixation assembly of claim 10 , wherein each of the first plurality of spikes and the second plurality of spikes include spikes having cuboid-shaped bases and pyramid-shaped tips.

15. The spinous process plate fixation assembly of claim 10 , wherein each of the pin plate and the lock plate include at least two offset flat portions including the first plurality of spikes and the second plurality of spikes, respectively.

16. The spinous process plate fixation assembly of claim 10 , wherein each of the first plurality of spikes and the second plurality of spokes include minor spikes and major spikes.

17. The spinous process plate fixation assembly of claim 10 , each of the pin plate and the lock plate include at least two staggered flat portions.

18. The spinous process plate fixation assembly of claim 10 , wherein each of the pin plate and the lock plate include an exterior face opposite of the pin plate interior surface and the lock plate interior surface, respectively, and each of the exterior faces include at least two compressor alignment slots disposed on opposite sides of the connector shaft.

19. The spinous process plate fixation assembly of claim 10 , wherein the pin plate comprises a pin plate aperture, and the connector shaft passes within the pin plate aperture.

20. The spinous process plate fixation assembly of claim 19 , wherein the pin plate comprises a pin receptacle disposed within the pin plate, the pin receptacle configured to receive a lock pin, wherein the pin side of the connector shaft is configured to receive the lock pin so as to secure the pin side within the pin receptacle.

Assignees

• Nuvasive Inc

Inventors

• Gustine Seth
• Zatta Daniel
• Bae Hyun

Classifications

• A61B17/7062

  Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs (rib fixation devices A61B17/8076); Tools for such devices · CPC title

• A61B17/7068 Primary

  Devices comprising separate rigid parts, assembled in situ, to bear on each side of spinous processes; Tools therefor · CPC title