Fecha de publicación: 29/12/2022 Fuente: WIPO (eseential oils OR extracts) A server apparatus communicates with a user terminal. The server apparatus includes a first storage area storing patient information and patient identification information, and a second storage area storing medical device identification information used for patient treatment, patient identification information on the patient that receives treatment by using the medical device, and status information indicating whether treatment is being provided. The server apparatus includes a processor that determines, when receiving a request command requesting the patient information that includes the medical device identification information, the patient identification information associated with the medical device identification information in which the status information indicates treatment is being provided, from among the patient identification information stored in the second storage area, and extracts and transmits the patient information associated with the determined patient identification information from among the patient identification information stored in the first storage area.