Patent ID: 7727225

Claim:
A catheter device for transferring at least one medium with a subject, wherein said catheter having a distal end and a proximal end, said device comprising: an outer tube having a distal end and a proximal end, and having a wall extending longitudinally there between; an inner tube disposed within said outer tube, said inner tube having a distal end and a proximal end, and having a wall extending longitudinally there between defining a inner tube flow area for transference of the medium; a longitudinal space between said outer tube and inner tube defining an inter-tube gap; at least one outer tube aperture disposed on said outer tube wall; at least one inner tube aperture disposed on said inner tube wall; said inner tube being adapted to move longitudinally and/or circumferentially relative to said outer tube to provide for said at least one inner tube aperture to be in communication with said at least one outer tube aperture to allow transference of the medium between said inner tube and the subject; and a seal system disposed in said inter-tube gap to control the medium from traveling within said inter-tube gap, wherein the seal system controls travel of the medium in a: distal direction beyond a distal portion of said seal system, and proximal direction beyond a proximal portion of said seal system.