Abstract: This invention is directed to an interspinous distraction implant, which is intended to restrict the motion of the vertebrae between themselves, thus improving the mechanical behavior that is altered by the intervertebral disk diseases. The invention is composed of an O-shaped body, which is oval and laminar, and includes two flaps for the implant anchorage and two additional pairs of upper and lower flaps wherein the upper flaps are forward with regard to the lower ones, so that both of them bump simultaneously into the respective vertebral laminae, thus avoiding the rotation of the implant in the transversal axis and positioning its longitudinal axis parallel to the spinous apophysis.