This relates to a wound therapy device, including an outer part and an inner part facing surface provided with an inner part facing opening, and a first connection channel to establish fluid communication between the inner part facing opening and a connector opening adapted to be connected to an external device. The wound therapy device can also be a part of a wound therapy arrangement, which can further include, a wound filler, an external device, a wound cover film, and tubing connections. Methods of using the wound therapy arrangement are also disclosed.