An interspinous fusion device including a spacer member and an anchor member. The spacer member has a ring with two or more anchor assemblies. The spacer member further has a first and second zip lock flange, each of the first and second zip lock flanges comprise a series of teeth protruding therefrom. The anchor member has a ring with two or more anchor assemblies. The anchor member has a barrel extending from the anchor member ring. The barrel comprises a first and second column of recesses adapted to mate with the teeth of the first and second zip lock flanges. The spacer member is adapted to slide over the barrel of the anchor member such that the series of teeth of the first and second zip lock flanges mate with the recesses in the first and second column of recesses, to secure the spacer member to the anchor member.
