Abstract
Recently method on hemopurification is various then frequently increased on use. Continuously multiply on double lumen catheter (DLC) for temporary blood access of HD. We investigated through for effective DLC and reform on it since a few years. In this time we improved for DLC while trou ble of blood flow during extracorporeal circulation.For poor blood flow on HD, rotate DLC just a little and remove on distance of a few cm to the catheter. We modyfied a rotatable catheter by Cook company and attached with 4 ruber rings to siliding. Thereby blood flow recovered easily to this methods.