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

a, b; a, b; a, ba, b; a, ba, b, c, d; a, b, a, b; a, b; a, ba, b; a, b; a, bAn interspinous device for impeding the movements of two successive vertebrae of the spinal column. In some embodiments, the device includes two pads whose internal faces are intended to be pressed against the lateral faces of the spinous processes of the vertebrae, and ligaments which connect the pads to each other and to the spinous processes, 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 by the pads increase as the spinal column moves away from the normal position. Method for making a pad designed for such a device.