Drug delivery systems; anesthetic delivery apparatus; apparatus for clinical diagnosis; catheters; needles for medical use; cannulae; introducer needles; balloon catheters; guide wires; discography devices, namely, spinal and discography needles, syringes and catheters; pain management devices, namely, catheters, needles, stylets and cannulae; spinal diagnostic devices, namely, catheters, needles, syringes and aspirators; spinal therapeutic devices, namely, catheters, needles, syringes, nozzles, stopcocks for catheters, catheter connector adapters, stylets and cannulae; spinal intervention devices, namely, catheters, needles, stylets and cannulae; spinal treatment devices, namely, catheters and cannulae; implantable patient monitoring sensors; patient monitoring sensors; actuators for therapeutic or diagnostic use; implantable actuators for therapeutic or diagnostic use; implants for the diagnosis and treatment of pain; implants comprised of artificial materials; inflatable spinal implants comprised of artificial materials; drug pumps; medical diagnostic imaging apparatus; depot devices for the delivery of drugs or markers; spinal spacers; cage devices for use in spinal implant procedures; patient medical monitors, namely, monitors for pain management; X-ray diagnostic apparatus; X-ray CT scanner; MRI diagnostic apparatus; fluid delivery devices, namely, catheters, needles, syringes and pumps