Patent ID: 8616244

Claim:
Apparatus for conveyance of fluid comprising: a first tube having a first end and a second end, an inner wall and an outer wall, said inner wall defining a passage for fluid and said outer wall having at least one first receiving section for receiving an inner wall from a second tube wherein said inner wall of said first tube has a diameter in the range of between about 0.002 to 0.005 inch (0.0508 to 0.127 mm); and, a second tube having a first end and a second end, an inner wall and an outer wall, said inner wall defining a chamber for receiving said first tube and having at least one second receiving section for receiving said outer wall of said first tube wherein at least one of said first tube and said second tube are drawn down such that said first receiving section and said second receiving section of said first tube and said second tube are to within between about 1/100 to 1/2000 inch (0.254 mm to 0.0127 mm) of each other and sealed by welding.