Surgical and medical apparatus and instruments, namely, silicone gel pads and positioners for the prevention of tissue damage providing effective pressure relief for humans during all surgical procedures; pressure relieving wheelchair cushions manufactured from various combinations of silicone gel, air and foam; silicone materials, namely, weight distributing cushions for wheelchair users to sit on, helping to alleviate pressure sores by way of distributing the weight evenly through the silicone gel filled cushion; [ gel bodies and gel products, namely, pads and positioners filled with silicone gel and foam allowing for even weight distribution, thus aiding in the prevention of tissue and nerve damage; gel protection products, namely, gel pads filled with silicone gel wrapped in a soft, stretchy cool band material worn to provide protection for areas at risk from pressure sores and nerve damage; ] silicone and non-silicone breast forms, silicone material and gel material, namely, artificial breasts, breast prosthesis and breast shields for post-mastectomy wear and cotton bags especially adapted to hold prosthesis for post-mastectomy wear; prosthetic interfaces, namely, prosthetic ligaments and prosthetic sockets used to fasten prosthetic limbs to the body; [ orthotic braces and prosthetic componentry, namely, prosthetic ligaments for lower limb amputees; ] prosthetic feet and knees; endoskeletal and exoskeletal components, namely, artificial materials for use in the replacement of bones; friction pylons, namely, impact reducing prosthetic pylons for prosthetic feet and sockets; children's prosthetic components, namely, prosthetic ligaments and prosthetic sockets used to fasten prosthetic limbs to the body; spinal orthotics, lower extremity orthotics, namely, orthotics for the foot and orthotics for the lower extremity of the human body; knee orthotics, [ cold therapy pump units and products, namely, orthopaedic cast cooling system comprised of a membrane wrapped around the cast, a vacuum pump and hoses to facilitate air flow to facilitate healing and comfort; ] upper extremity fractures and metal orthotics, namely, orthotics for the hand; [ prosthetic tools, namely, scalpels, blades, staplers, forceps, perforators, pliers, retractors, saws, scissors, drills and amputaters; callipers, clamps and drilling fixtures in the nature of medical and surgical apparatus and instruments, namely, orthopedic fixation device used in orthopedic transplant and/ or implant surgery; respirators for artificial respiration in the nature of respiratory helmets for artificial respiration; ] braces, namely, medical braces for limbs and joints and for use in orthopaedics [ ; post operation shoes; walking aids, crutches, walking frames and rollators ]