Patent ID: 9101409
Filing Date: 2015-08-11
Classification: A61B,A61F

Abstract:
1. An interspinous implant for maintaining a predetermined interval between adjacent processus spinosus, the implant comprising: a substantially conoid screw region having screw threads being screwable into a processus spinosus interspace; a head region of a substantially inverse truncated conoid shape formed coaxially with the screw region; a spacer region formed in an axial direction between the screw region and the head region; and a through-hole penetrating an axial center of the screw region, the spacer region, and the head region, wherein a plurality of slits or grooves is formed in an axial direction of the entire shape of the implant, the plurality of slits or grooves occupying more than one third of the full length of the implant in the axial direction, each of the plurality of slits or grooves is deep enough to reach the through hole, the plurality of the slits or grooves is arranged in the implant at even intervals, each of the plurality of slits or grooves is formed continuously in the axial direction through the screw region, the spacer region, and the head region, and neither end of each of the plurality of slits or grooves is formed so as to extend to an open end of the screw region or an open end of the head region.