Heat and cold therapy equipment, specifically electrically operated water-heating and pumping unit, and connecting pads for therapeutic use by patients; medical equipment containing gel, namely, operating table pads, adjustable, flat and flexible mattresses, and supports, for general medical use and patient positioning; medical equipment, namely, mattresses, mattress overlays, bed cushions, cushions, chair cushions, cushions for feet, and air pumps, all for the prevention and treatment of pressure ulcers, not including wheelchairs and wheelchair cushions; medical equipment, namely, air control units, inflatable mattress pads and seat cushions for treatment and prevention of pressure ulcers; medical equipment comprising air pumps for use with air cushions for treatment and prevention of pressure ulcers; medical equipment, namely, pressure-reducing mattress overlays and air pump; fluid filled therapeutic bed for medical purposes; static bed cushion with inflation pump for relieving tissue interface pressure and providing low air loss therapy for use in the prevention and treatment of pressure ulcers; medical products, namely, therapeutic mattress having low-air-loss to manage a patient's body temperature and moisture loss, and air cells that provide pressure redistribution to prevent and treat pressure ulcers and provide rotation therapy with percussion and vibration to assist in preventing and treating the complications associated with immobility, all in connection with turn assist, lock out switch, alarm silencer, language options, and therapy history features; alternating pressure and low air-loss mattress system comprised of a mattress and an air-pressure controller for medical purposes; heating pads for applying heat to the human body for medical purposes and control units therefor; water-circulating pad for use for medical purposes in conjunction with a hot-and-cold therapy pump; therapeutic warming and cooling blankets for use with hyperthermia and hypothermia equipment; pads and fluid circulation pumps for treatment of hyperthermia and hypothermia; mattresses for use in the treatment of decubitus ulcers; mattresses for use by the health care industry for medical purposes; inflated patient support mattresses for medical purposes; therapeutic mattresses for medical purposes; pressure reducing mattresses for medical purposes and components thereof