Posterior oblique lumbar arthrodesis
AssigneesZimmer Spine, Inc., University of Pittsburgh—Of the Commonwealth System of Higher Education
InventorsDaniel G. Schmiel, Rodney L. Houfburg, Daniel D. McPhillips, William C. Welch
Life of this patent
Estimating the term…
Abstract
Instruments and methods for spinal stabilization are disclosed. In preferred embodiments, the invention provides greater stabilization of vertebral bodies through methods including combinations of external fixation systems and intervertebral implants to provide greater fusion stability, greater motion segment stability, faster fusion, reduced pain, reduced chance of migration, reduced chance of subsidence, etc.
Claims14
A kit for preparing an implant site for receiving an implant between adjacent first and second vertebrae, the kit comprising:
- an instrument guide, said instrument guide comprising:
- (i) a tube having a longitudinal axis passing through a lumen of said tube, said lumen at least partially surrounded by a wall, said wall having a proximal end and a distal end;
- (ii) said distal end of said wall having a distal edge, said distal edge having an angle of about 10° to about 45° relative to a reference line perpendicular to said longitudinal axis and adapted to rest against, and in substantial contact with, a posterior surface of a human vertebra;
- (iii) at least one paddle extending from said distal edge of said wall;
- and
- (iv) an adjustable stop operatively connected to the tube to affirmatively stop instruments passed through said instrument guide;
- wherein said adjustable stop includes a threaded portion threadedly engaged with a threaded portion of the tube of the instrument guide;
- a distracting plug;
- and
- an external vertebral stabilization device.
A kit for preparing an implant site for receiving an implant between adjacent first and second vertebrae, the kit comprising:
- an external vertebral stabilization device;
- and
- an instrument guide, said instrument guide comprising:
- (i) a tube having a longitudinal axis passing through a lumen of said tube, said lumen at least partially surrounded by a wall, said wall having a proximal end and a distal end;
- (ii) said distal end of said wall having a distal edge, said distal edge having an angle of about 10° to about 45° relative to a reference line perpendicular to said longitudinal axis and adapted to rest against, and in substantial contact with, a posterior surface of a human vertebra;
- (iii) at least one paddle extending from said distal edge of said wall;
- and
- (iv) an adjustable stop operatively connected to the tube to affirmatively stop instruments passed through said instrument guide;
- wherein said adjustable stop includes a threaded portion threadedly engaged with a threaded portion of the tube of the instrument guide.
Dependencies are inferred from the claim text.