Muller's Retractor is a surgical instrument designed for separating the edges of a surgical wound or incision during surgery. It is a simply designed tool with a hooked, curved and angled blade along with a comfortable handle. It is available in various sizes and dimensions to meet up with the different needs of different situations. A wide variety of retractors is available in the market such as Self-Retainig Retractors, Discectomy Retractors, Laminectomy Retractors, Abdominal Retractors, Rectum Retractors, Poplitea Retractors, etc. Clamped in situ, handheld or suspended at the robotic arm, they help in maintaining the desired location of a tissue.