Devices and techniques for a posterior lateral disc space approach
First Claim
12. A surgical instrument for performing a surgical procedure in a spinal disc space, comprising:
- a shaft having a length extending substantially along a longitudinal axis, wherein said shaft includes a proximal portion extending along said longitudinal axis, a connecting portion extending from a distal end of said proximal portion along a second axis, said second axis forming a first angle with said longitudinal axis, and a distal portion extending distally from a distal end of said connecting portion along a third axis, said third axis forming a second angle with said second axis such that said distal portion is non-parallel to said proximal portion; and
a rasp head extending from a distal end of said distal portion of said shaft.
0 Assignments
0 Petitions
Accused Products
Abstract
This invention relates to methods and instruments for performing disc space preparation and implant insertion from a uni31 lateral approach to the spine through a posterior lateral opening to the disc space. The instruments include spreaders, distractors, reamers, scrapers, cutters, chisels, rasps, pushers and implant inserters. A surgical procedure is provided that allows bilateral support of the adjacent vertebrae with at least one interbody fusion device inserted into the disc space via a unilateral approach. Implants for insertion into the disc space are also provided.
-
Citations
38 Claims
-
12. A surgical instrument for performing a surgical procedure in a spinal disc space, comprising:
-
a shaft having a length extending substantially along a longitudinal axis, wherein said shaft includes a proximal portion extending along said longitudinal axis, a connecting portion extending from a distal end of said proximal portion along a second axis, said second axis forming a first angle with said longitudinal axis, and a distal portion extending distally from a distal end of said connecting portion along a third axis, said third axis forming a second angle with said second axis such that said distal portion is non-parallel to said proximal portion; and
a rasp head extending from a distal end of said distal portion of said shaft. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
23-1. The instrument of claim 21, wherein said anterior wall is convex and said posterior wall is concave.
-
25. A surgical instrument for performing a surgical procedure in a spinal disc space, comprising:
-
a shaft extending generally along a longitudinal axis, said shaft having a proximal portion along said longitudinal axis and a distal portion offset laterally in a first direction from said longitudinal axis; and
a rasp head extending from a distal end of said shaft laterally in said first direction further from said longitudinal axis than said distal end, wherein said distal portion is laterally offset by a distance of 10 millimeters.
-
-
26. A surgical instrument for performing a surgical procedure in a spinal disc space, comprising:
-
a shaft having a length extending substantially along a longitudinal axis, wherein said shaft includes;
a proximal portion extending along said longitudinal axis;
a connecting portion extending from a distal end of said proximal portion along a second axis, said second axis forming a first angle with said longitudinal axis;
a distal portion extending distally from a distal end of said connecting portion along a third axis, said third axis forming a second angle with said second axis, wherein a distal extension of said longitudinal axis and a distal extension of said third axis intersect at an angle of about 5 degrees; and
a rasp head extending from a distal end of said distal portion of said shaft.
-
-
27. A method for inserting an implant in a spinal disc space, comprising:
-
providing a posterior lateral opening into the disc space;
selecting an implant for insertion into the disc space;
securing a trailing end of an implant to an implant inserter;
positioning a leading end of the implant at the opening;
engaging a pusher to the implant inserter;
applying an impaction force to the implant with the pusher to push the implant through the opening and into the disc space; and
applying a pivoting force to the implant with the implant inserter to move the leading end of the implant towards a distal portion of the disc space. - View Dependent Claims (28, 29, 30, 31, 32, 33)
-
-
34. A method of preparing a spinal disc space for insertion of an implant, comprising:
-
providing a posterior lateral opening into the disc space;
providing a rasp including a shaft extending generally along a longitudinal axis, said shaft having a proximal portion along said longitudinal axis and a distal portion offset laterally to a first side of said longitudinal axis, said rasp further including a rasp head extending from a distal end of said shaft towards said first side; and
orienting said shaft so that the spinous process is positioned toward a second side of said longitudinal axis, said second side opposite said first side. - View Dependent Claims (35, 36, 37, 38)
-
Specification