DEVICE AND METHOD FOR VARIABLY ADJUSTING INTERVERTEBRAL DISTRACTION AND LORDOSIS
First Claim
Patent Images
1. A vertebral distraction device comprising:
- a first element configured to contact a first endplate of a vertebral body;
a second element spaced apart from the first element and configured to contact an opposing second vertebral endplate located on an adjacent vertebral body; and
an adjustment mechanism configured to alter the spacing between the first and second elements, wherein the device contacts each of the endplates on at least three non-collinear points so as to control an included angle of the endplates.
1 Assignment
0 Petitions
Accused Products
Abstract
A removably insertable surgical apparatus is configured for insertion between adjacent vertebrae during spinal surgery and adjusted in-situ to produce varying degrees of distraction, neural-decompression, lordotic, kyphotic and/or scoliotic adjustment in the spine.
-
Citations
34 Claims
-
1. A vertebral distraction device comprising:
-
a first element configured to contact a first endplate of a vertebral body; a second element spaced apart from the first element and configured to contact an opposing second vertebral endplate located on an adjacent vertebral body; and an adjustment mechanism configured to alter the spacing between the first and second elements, wherein the device contacts each of the endplates on at least three non-collinear points so as to control an included angle of the endplates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A non-implantable vertebral distraction device comprising:
-
a first wall; a second wall spaced apart from and generally parallel to the first wall; a cross member interconnecting an end of each of the first and second walls, the cross member being oriented generally perpendicular to the first and second walls; a first flap hingedly connected to the first wall and pivotable between a first position and a second position laterally outward from the first position; a second flap hingedly connected to the second wall and pivotable between a third position and a fourth position laterally outward from the third position; an expansion insert located between the first and second walls and movable in a direction generally parallel to the first and second walls between a fifth position and sixth position; and an adjustment mechanism coupled to the cross member for driving the expansion insert between the fifth and sixth positions, wherein the movement of the expansion insert from the fifth position to the sixth position causes the first flap to move from the first position to the second position and causes the second flap to move from the third position to the fourth position. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A method of changing the respective orientation of two adjacent vertebrae, the vertebrae each having an opposing endplate defining an intervertebral space between the vertebrae, the method comprising:
-
engaging each of the two vertebrae with a distraction device such that a relative axial distance between the two endplates and an included angle between the two endplates are controlled; and varying both the relative axial distance and the included angle between the two endplates by moving two portions of the distraction device relative to one another. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
-
Specification