DOUBLE LUMEN CATHETER , USED FOR DIALYSIS ,AS THE BLOOD WITHDRAWAL OCCURS THROUGH ONE LUMEN AND RETURN BACK AFTER DIALYSIS THROUGH THE 2ND LUMEN .IT HAS A CURVED HUB WHICH MAKES THE CATHETER COMFORTABLE FOR THE PATIENT AFTER INSERTION. BESIDES THAT IT WILL GIVE A GOOD FLOW AS NO KINK WILL HAPPEN . ALSO IT IS BETTER FROM COSMETIC POINT OF VIEW