An assembly of devices used to gain access to the spine by dilation of the overlying tissues for the placement and support of an endoscope. It typically includes the endoscope, a light source, a fibreoptic light cable, a camera control unit, a camera, and cannulae (portals). It is used for posterior or anterior access and visualization of a surgical area of the cervical, thoracic, or lumbar spine, allowing the surgeon to perform a procedure such as, a discectomy, nucleotomy, spinal fusion, spinal decompression, foraminotomy, or insertion of spinal implants. This is a reusable device.