The website you gave is that local or US? I was under the impression all medal pumps where open systems with the exception of the BIG hospital ones as they can be loaned out and worth any where from $700 up. I tried to have a look on their website but couldn't see anywhere that said open/closed or hospital grade. It does say: "IMPORTANT: This product is a single user item. Use by more than one user may pose a health risk, performance questions, and voids the warranty." Which would make me think it's an open system as all closed systems can be used by more than 1 user with all tubes & etc replaced. To some people it doesn't matter open or closed but with the milk being exposed to pathogens in the air I choose to go with a closed system.