With VIASYS sleep diagnosis- and therapie systems you don't miss progress by sleeping as our systems are always up-to-date. Logically consistent development and regular updates consider this attitude. After having taken a close look at competitor products, more and more doctors decide for VIASYS diagnosis systems knowing that they can rely on VIASYS quality products. Last but not least: responsible and cost-conscious doctors be convinced by the fair cost/benefit ratio of VIASYS equipment.