Interspinous device for impeding the movements of two sucessive vertebrae, and method for making a pad designed for it

Abstract

Interspinous device for impeding the movements of two successive vertebrae (8, 9) of the spinal column, characterized in that it comprises: two pads (2a, 2b; 11a, 11b; 20a, 20b) whose internal faces (3a, 3b; 12a, 12b) are intended to be pressed against the lateral faces of the spinous processes (6, 7) of the said vertebrae (8, 9), and ligaments (4, 5a, 5b, 5c, 5d; 17a, 17b, 18, 19; 23, 24) which connect the said pads (2a, 2b; 11a, 11b; 20a, 20b) to each other and to the said spinous processes (6, 7), so that, during flexion and extension movements of the spinal column with respect to its normal position, the pressures exerted against the lateral faces of the spinous processes (6, 7) by the said pads (2a, 2b; 11a, 11b; 20a, 20b) increase as the spinal column moves away from the said normal position. Method for making a pad designed for such a device.

Dependencies are inferred from the claim text.