Liquid collection container and extracorporeal circuit

A liquid collection bag in combination with a storage container, the liquid collection bag possessing an interior connected in a fluid communicating manner to an interior of the storage container by way of a tube, the interior of the liquid collection bag being adapted to receive and collect liquid from the storage container based on a difference in pressure between an inside of the liquid collection bag and an inside of the storage container, the liquid collection bag comprising:

• a flexible bag body enclosing the interior of the collection bag, with a partition part dividing the interior of the collection bag into a first space and a second space;
• an introduction part connected to the tube and having an end positioned in the first space to introduce the liquid from the storage container which has passed through the tube into the first space;
• the bag body being provided with a communication part extending between the first and second spaces for establishing communication between the first space and the second space;
• and
• the liquid from the storage container is introduced into the first space by way of the introduction part, and is collected into the second space by way of the communication part.