A collection of sterile surgical instruments and devices intended to be used for the implantation of an interspinous process decompression (IPD) implant that is inserted between two adjacent lumbar spinous processes during a minimally-invasive procedure to decompress neural structures, typically to treat a patient suffering from symptomatic degenerative lumbar spinal stenosis (DLSS). It typically consists of a tray, dedicated dilators, a sizing instrument, a spacer (the implant) insertion instrument, and an implant holder. This is a single-use device.