OBI Medical

IT architecture and operation 

The v-TAC software application works with the Roche cobas b 123 <3> POC system and cobas b 123 <4> POC system as well as with Radiometer ABL90 series and ABL800Flex series.

The v-TAC software is not installed on the blood gas analyser itself. Instead, the v-TAC software is a stand-alone software application designed to run on a small footprint Windows virtual server or a dedicated computer in the hospital’s IT environment. A single instance of the v-TAC software can service all blood gas analysers in the hospital.

During normal operation, the v-TAC software operates seamlessly as a black-box and does not require any attention or application management.

How the v-TAC solution works with the blood gas analyser is illustrated in Figure 3 and described in steps below:

  1. The blood gas analyser transmits the venous blood gas results and the manually entered SpO2 value to the hospital data manager.
  2. The data manager (cobas infinity POC/cobas IT 1000 for the Roche cobas systems or Radiance/AQURE for the Radiometer ABL systems) fetches the values and forward them to the v-TAC software.
  3. v-TAC calculates arterialised blood gas values which are printed on a selected network printer (optional).
  4. The calculated values are returned to the data manager.
  5. The data manager forwards the values to the laboratory information system or electronic patient record, where they instantly can be accessed by the clinical staff.


v-TAC server and IT-services requirements

Hardware requirements (to be provided by the hospital):

  • Physical server and housing (single core processor, no special requirements)
  • Minimum 100 MB available disk storage space
  • Minimum 2GB RAM (approximately 600 MB is used by the v-TAC software application in total)
  • Optional: If printed reports from the v-TAC software are required, the End-User is responsible for availability, configuration, and management of network printers.

Operating system and connectivity requirements (to be provided by the hospital):

  • Optional: Virtual server including any relevant licenses
  • Windows operating system including any relevant licenses, updates etc. (Request versions supported)
  • Anti-virus and other relevant applications
  • Access to global Internet for license key exchange (port 80)
  • Remote-access option for OBI Medical for (monitored) remote services for installation and support on request

IT services (to be provided by the hospital)

  • Relevant IT-services and support to the above
  • Optional: Back-up of database

OBI Medical staff will install the v-TAC software onto the Windows platform via remote access, including

  • v-TAC software
  • Java platform (version 1.7 or later).
  • Derby database


The v-TAC software is CE marked and lives up to the requirements of In-Vitro Diagnostics Directive 98/79/EC and can be used by users in European countries.