Abstract: An information integration apparatus includes providers, a middleware, and an application. The middleware executes processes of: assigning a reliability label to data supplied by a device to the provider, the reliability label corresponding to the provider; storing the data in a data storage device; reading the data from the data storage device, and supplying the read data to the application. The application provides, using the data, a display on a display device in a display mode corresponding to the reliability label assigned to the data.

Abstract: One embodiment of the present disclosure is provided with: an information acquisition portion; an information storage portion; an event extraction section; a region setting section; and a display section. The information storage portion adds, to medical information, a time at which the information acquisition portion acquires the medical information from each of multiple medical devices used in a surgery, and a label for specifying the medical information. The display section causes a display device to display, as medical information, an image including a surgery site and at least one event extracted by the event extraction section in a time region set by the region setting section based on the time added to the medical information.