Abstract: The object based navigation is an intelligent user interface that uses a source object to determine which target information is to be presented to the user. This is done by associating an object to one or more operations, so that selection of a given source object would result in a predefined operation to be activated. The role of the user may also affect the predefined operation that is activated. If multiple operations are associated with a given source object, these operations may be prioritized, so that the one with the highest priority is performed as a default operation.

Abstract: A medical valve includes a valve body having a central fluid passageway defined therein. A movable piston adapted in size and shape to be located within said central fluid passageway of said valve body. A sealing interface is defined between said movable piston and said central fluid passageway. An upper seal is located at an upper portion of said sealing interface. It is formed by a seal carried by said valve body. A lower seal is located at a lower portion of said sealing interface, and is formed by a seal carried by said movable piston. The lower seal remains intact until after said upper seal is broken.

Abstract: The object based navigation is an intelligent user interface that uses a source object to determine which target information is to be presented to the user. This is done by associating an object to one or more operations, so that selection of a given source object would result in a predefined operation to be activated. The role of the user may also affect the predefined operation that is activated. If multiple operations are associated with a given source object, these operations may be prioritized, so that the one with the highest priority is performed as a default operation.