The invention relates to a device that is provided with a C-arm 7 for carrying medical devices 5, 6, which C-arm is adjustably attached to a carrier 4. A rearward and forward biasing springs are provided between the seat rotating shaft members and floor support brackets respectively. With the inventive solution, appropriate service modes may be selected according to different demands of a user for L1 VPN services required, and VPEs and VCEs may be created dynamically on a PE and a CE to support various service modes, so as to satisfy the demands of the user. A second-order set of controller software instructions configured to interact with the second-order data object is also included in the software architecture.