Patent ID: 8361008

Claim:
An intrabody device for administering a liquid medical substance in a vein, comprising: an administration duct with at least one outlet; an ejection force source connected to said administration duct and configured for applying an ejection force for conducting therethrough a liquid medical substance to said at least one outlet for administering said liquid medical substance at an ejection pressure, quantity and direction; and a suction force source connected to a first withdrawing duct having at least one first inlet and configured for applying a suction force for withdrawing therethrough at least a residue of said liquid medical substance via said at least one first inlet in a suction pressure, quantity and direction; wherein a relation between said ejection and suction pressure, quantity and direction limits the extent of said liquid medical substance within a venous lumen to a predefined space; wherein said liquid medical substance is used for ablating a target vein; wherein said suction force source is connected to a second withdrawing duct having at least one second inlet and configured for applying said suction force via said at least one second inlet from a distal end of the administration duct in a suction pressure, quantity and direction; wherein said at least one outlet is placed along said administration duct and between said at least one first and at least one second inlets.