초록 ▼

A device for treatment of blood by extracorporeal circulation comprises a dialysis liquid circuit having a supply tube (9a, 9b) on which is arranged a filter (21) having a first chamber and a second chamber (22, 23) which are separated by a filtering membrane (24), the supply tube having a first por

A device for treatment of blood by extracorporeal circulation comprises a dialysis liquid circuit having a supply tube (9a, 9b) on which is arranged a filter (21) having a first chamber and a second chamber (22, 23) which are separated by a filtering membrane (24), the supply tube having a first portion (9a) connecting a dialysis liquid source (10) to an inlet of the first chamber (22), and a second portion (9b) having an end connected to an outlet of the second chamber (23) of the filter (21) and another end which can be connected to an inlet of a compartment (3) of a dialyzer (1) with semipermeable membrane (4). A feedback tube (25) connects the inlet of the first chamber (22) of the filter (21) to the outlet of the first chamber (22). A flushing pump (26) is arranged on the feedback tube (25) for circulating liquid in the first chamber (22) of the filter (21) and causing cleaning of the membrane (24) by tangential flushing.

대표청구항 ▼

A device for use in connection with an extracorporeal blood treatment system having a dialysis liquid circuit, the device comprising: a supply tube on which is positioned a filter having a first chamber and a second chamber, the first chamber and second chamber being separated by a filtering membran

A device for use in connection with an extracorporeal blood treatment system having a dialysis liquid circuit, the device comprising: a supply tube on which is positioned a filter having a first chamber and a second chamber, the first chamber and second chamber being separated by a filtering membrane, the supply tube having a first portion flow-connecting a dialysis liquid source to an inlet of the first chamber, and a second portion having an end flow-connected to an outlet of the second chamber of the filter and another end configured for flow-connection to a treatment liquid inlet of a dialyzer; a discharge tube having an end configured for flow-connection to a treatment liquid outlet of the dialyzer; a purge tube flow-connected to an outlet of the first chamber of the filter, with a flow-control element positioned on said purge tube; a feedback tube flow-connecting the outlet of the first chamber of the filter to the first portion of the supply tube at a connection point; a flushing pump positioned on the first portion of the supply tube between the connection point and the inlet of the first chamber of the filter, the flushing pump being positioned to cooperate with the feedback tube to recirculate liquid through the first chamber and thereby cause cleaning of the membrane by tangential flushing; and restriction means arranged on the feedback tube for cooperating with the flushing pump to adjust a liquid pressure in the filter.