Surgical devices and instruments; surgical tools in the nature of reposable surgical instruments, surgical tools having surgical cameras, and surgical tools used in connection with surgical imaging devices; hydraulic systems comprised of hydraulic components, pneumatic components, and interchangeable medical apparatus for use in connection with surgical devices, and medical instruments and surgery, namely, hydraulic-operated surgical tools, and hydraulics for surgical cameras; operating room display systems consisting of display, computers for providing viewing images of surgical site for use for a surgical procedure, and graphic user interface (GUI); surgical imaging systems comprising surgical cameras, displays, computers for viewing images of surgical instruments and graphic user interfaces (GUI); surgical imaging products, namely, cameras sold as a component of surgical instruments, cameras supported on a retractor-based platform for use in connection with surgeries, cameras supported on a surgical instrument for use in connection with surgeries, cameras for viewing surgical site, and surgical cameras; surgical sensor modules, namely, sensors being parts of surgical instruments, sensors supported on surgical instruments, sensors for viewing surgical sites, and surgical sensors; graphic user interface (GUI) for use with surgical devices and instruments; all of the foregoing relating only to medical or surgical devices and instruments