1. Catheter arrangement and method for producing sucha catheter arrangement.2.1 A catheter arrangement of this type comprising acatheter tube with a lumen, wherein the lumen hasa proximal end and a distal end, and at least onesupply line, wherein the supply line has a distalend and a proximal end, and wherein the distal endof the supply line is connected in afluid-conducting manner to the proximal end of thelumen, is known.2.2 According to the invention, the fluid-conductingconnection between the supply line and the lumenis brought about by means of a fluid-tight joiningconnection between the distal end of the supplyline and the proximal end of the lumen.2.3 Use in infusion therapy.3. Figure 3