Patent ID: 8211083

Claim:
A method for delivering at least one medium to a subject using a catheter device, wherein said method comprises: inserting an outer tube into the subject, said outer tube having a distal end and a proximal end and comprising at least one aperture there between; disposing an inner tube within said outer tube, such that a longitudinal space between said outer tube and said inner tube defines an inter-tube gap, said inner tube having a distal end and a proximal end and comprising at least one aperture there between; providing the at least one medium into said inner tube; aligning said outer tube aperture and said inner tube aperture to allow the at least one medium to travel through said inner tube aperture and outer tube aperture to the subject while controlling the medium from traveling between the exterior of said inner tube and interior of said outer tube; providing a seal in said inter-tube gap to control the medium from traveling within said inter-tube gap, wherein said seal controls travel of the medium in a distal direction beyond a distal portion of said seal, and in a proximal direction beyond a proximal portion of said seal.