fiber optic scope for medical use; catheters; medical guidewires; myeloscopy access kits consisting of three-way stopcock, drape, gauze sponges, scalpel needles, sterile strips, syringes, IV sets (comprising a spike, plastic tubing, drip chamber, roller clamp, and leur connector), medical guidewire, introducer sheath with hemostasis valve and sideport stopcock, dilator, and female touhy borst; and myeloscopy instroducer sets consistingof sheaths, medical guidewire and dilators