Abstract: A medical perfusion system for use in connection with the medical treatment of a patient is provided with a first type of perfusion device in the form of a blood pump adapted to pump blood through a fluid conduit connected to the patient, a second type of perfusion device in the form of a sensing device adapted to sense a condition and generate a sensing signal relating to the condition, and a controller with an input device for accepting control commands from an operator. The perfusion system also includes a display device for generating visual displays relating to the perfusion system and means coupled to the display device for generating a perfusion circuit image comprising an image of each of the perfusion devices and an image of a fluid conduit.

Abstract: Program code is executed in a data processing system in order to display a plurality of items so that each of the items is displayed as a different layer with respect to each of the other items and so that at least portions of items in lower layers are obscured by items in upper layers. Items may be, for example, icons, tool bars, directories, documents, notes, and/or the like. Program code is also executed in the data processing system in order to select an item so that each of the other items, which is displayed in a layer above the selected item and which would otherwise obscure the selected item, is cut out in order to expose at least a portion of the selected item and so as to reveal an otherwise obscured portion of an item which is layered below the selected item. A cut-out border may be provided around the selected item so that an item layered below the selected item is revealed.