Spinous process fixator
AssigneeDePuy Synthes Products, Inc.
InventorsFelix Aschmann, Benjamin Barrall, David Chow
Life of this patent
Estimating the term…
Abstract
The present invention is directed to an interspinous spacer assembly for implantation and/or affixation between spinous processes of adjacent superior and inferior vertebrae and associated tools and methods for stabilizing the human spine. The interspinous spacer assembly includes a spacer body, a first lateral plate, a second lateral plate and a locking mechanism extending through a channel provided in the spacer body and coupling the first and second lateral plates to the spacer body.
Claims28
An interspinous spacer assembly for insertion into an interspinous space between spinous processes of adjacent vertebral bodies, the assembly comprising:
- a spacer body sized and configured for insertion between adjacent spinous processes, the spacer body including a channel sized and configured to receive a locking mechanism;
- a first lateral plate and a second lateral plate for coupling the spacer assembly to the spinous processes;
- and
- the locking mechanism extending through the channel in the spacer body and coupling the first and second lateral plates to the spacer body, the locking mechanism including a first locking member and a second locking member configured to move relative to each other in a longitudinal direction of the locking mechanism, the second locking member having hollow cylindrical body for receiving a body of the first locking member, the body of the first locking member including an engagement feature sized and configured to releasably engage with a corresponding engagement feature on an interior surface of the hollow cylindrical body of the second locking member.
A tool for engaging an interspinous spacer assembly for insertion into an interspinous space between spinous processes of adjacent vertebral bodies, the tool comprising:
- a handle;
- a pair of jaws that are sized and configured to mate with the interspinous spacer assembly;
- and
- a linkage mechanism for translating movement of the handle into movement of the pair of jaws,
- wherein movement of the pair of jaws when releasably mated to the interspinous spacer assembly causes the interspinous spacer assembly to mate with the spinous processes.
Dependencies are inferred from the claim text.