Well, my best guess is that you will not get them. To run the Tevion, you probably will have to use XP mode in Windows 7. Even then, it may be a challenge to find a driver. The usual practice in to check the manufacturer's site for drivers. Sadly, Tevion does not appear to have a website. I supply an address below to its parent company.
I have found a page purportedly with software for a Tevion scanning device. But, I am so doubtful to the authenticity of the site I would not download it on my system to try out without totally backing up my system and expecting to have to restore my system from an iso file consequently. Yes, I would pre-judge the file to be sheer trouble. But it is the only one I have found.
Tevion are part of Medion Australia Pty Ltd
Level 6, 35 Chandos Street St Leonards NSW 2065
Ph 1300 884 987 M-F 8.30am to 6.30pm (EST)