The Hospital Information System Using Two Separate Virtual Servers Connected to the Internet with Strong Security

To achieve both security and convenience of hospital information systems, we introduced two virtual servers; one with an Internet connection and the other using electronic medical records not connected to the Internet. Electronic medical records and other applications, such as mailer, Microsoft office products, and Internet browser, were ran by Citrix XenApp™, a product of an application virtualization. The virtual servers connected to the Internet and the virtual servers for the electronic medical records were isolated, and the interface between the two was strictly cutting off. Clients were based on the thin and thick client principles, and ordinary personal computers were allowed for applications not installed in the virtual servers. We set up personal data and unit data repositories in the virtual server that was connected to the Internet. Therefore, when users logged in using the contact type IC card to authenticate the active directory, they were able to operate both the electronic medical records and the shared data repositories anywhere in the hospital. Users could search the Internet even while writing electronic medical records, and the number of PCs connected to the electric medical records was increase significantly, which resulted in additional expansion of the blade servers. To develop the virtualization system of the HIS, stabilization of virtualization technology, virtual license fee of applications, and improvement of management capacity will be required.

Keywords: Client, Electronic medical records, Hospital information system.