A new intra-spinal decompression implant is introduced. One example for our presentation is a device with 2 or 3 pieces, with each piece with 2 clamps, symmetrically located on each side of each piece. The main piece has at least 2 screws which engage into 2 or more grooves in the side piece, to get attached to the side piece. The 3rd piece, as an optional piece, is the bottom piece, which is similar to the side piece, and gets attached to the main piece, using same or different screws. Each piece is attached to the human body, during back surgery, with corresponding clamps. This improves the quality of the surgery and the result for the patient. More examples are given here.