BLOODLINE LIQUID EMPTYING DEVICE, BLOOD TREATMENT DEVICE, BLOOD TREATMENT MACHINE, METHOD FOR EMPTYING EXTRACORPOREAL BLOOD CIRCUIT, CONTROL SYSTEM AND COMPUTER READABLE PROGRAM CARRIER

摘要

A bloodline liquid emptying device (10) for a blood treatment device (1) is disclosed. The blood treatment device (1) comprises: a membrane filter (13) having a first chamber (131) and a second chamber (132) separated from the first chamber (131) by a membrane (133); a dialysate balancing hydraulic circuit (11) connected fluidly with the first chamber (131); an extracorporeal blood circuit (12) comprising an arterial blood line (121) and a venous blood line (122) each connected fluidly with the second chamber (132); and a venous bubble catcher (124) disposed at the venous blood line (122); wherein the bloodline liquid emptying device (10) is configured such that a pressurized air can be supplied to the venous blood line (122) via the venous bubble catcher (124) to displace liquid remaining in the extracorporeal blood circuit (12) from the second chamber (132) into the first chamber (131) across the membrane (133). Also disclosed are a corresponding blood treatment device (1), a corresponding blood treatment machine (100), a method for emptying an extracorporeal blood circuit of the blood treatment device (1), a corresponding control system and a corresponding computer readable program carrier. The emptying method can be carried out simply and the corresponding blood treatment machine (100) has a simple structure and even can be achieved by simply retrofitting the known blood treatment device.