Spinal compression instrument and related methods
AssigneeGlobus Medical, Inc.
InventorsConrad Tyler Hammann, Scott Lish
Life of this patent
Estimating the term…
Abstract
The disclosure provides systems and instruments that allow vigorous compression of two bone structures while minimally impeding visual access to the surgical site. This is achieved by use of a sleeve member that connects a stanchion to a lever. The system includes a stanchion member, a sleeve member dimensioned to at least partially encircle the stanchion member, and a compression lever including. The sleeve and the lever form a pivot point to allow the compression lever to rotate relative to the stanchion member when the sleeve is reversibly placed around the stanchion member.
Claims13
A spinal compression system for compressing a first bone structure relative to a second bone structure, the system comprising:
- a stanchion having an elongate shaft and a first bone anchor engager at a distal end configured to engage a tulip portion of a first bone anchor;
- a sleeve comprising a first part of a pivot mechanism and configured to at least partially encircle the stanchion;
- and
- a compression lever comprising:
- a distal end configured to engage a tulip portion of a second bone anchor and comprising an opening configured to receive a spinal rod passing through tulip portions of the first and second bone anchors;
- and
- a second part of the pivot mechanism configured to reversibly connect to the first part of the pivot mechanism of the sleeve forming a pivot point to allow the compression lever to rotate relative to the stanchion about an axis that contains the pivot point.
A spinal compression instrument for compressing a first bone structure relative to a second bone structure, the instrument comprising:
- a stanchion having:
- an elongate shaft with a distal end and a proximal end;
- a first bone engager at the distal end of the elongate shaft;
- a rod recess in the first bone engager dimensioned to accept a spinal rod;
- a sleeve at least partially encircling the stanchion, the sleeve having:
- a pair of generally planar sidewalls;
- a stanchion channel between the pair of sidewalls;
- a pair of pivot posts protruding outwardly;
- a plurality of ratchet teeth at a proximal end of the sleeve;
- and
- a snap-fit mechanism positioned to temporarily secure the stanchion within the stanchion channel;
- a compression lever comprising a cutout extending between a proximal end and a distal end of the compression lever, wherein the stanchion and sleeve extend through the cutout, and the compression lever is pivotably connected to the sleeve via a pair of pivot connectors engaged to the pair of pivot posts at a pivot point located between a proximal end and a distal end of the cutout to allow the compression lever to rotate relative to the stanchion about an axis that contains the pivot posts.
Dependencies are inferred from the claim text.