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AssigneeFresenius Medical Care Deutschland GmbH
InventorsAlexander HEIDE, Dejan NIKOLIC, Arne PETERS, Christoph WIKTOR
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A method and a device are disclosed for regulating an ultrafiltration in a dialysis treatment, in which the blood to be ultrafiltered in an extracorporeal blood circulation (109) flows through a blood chamber (110) of a dialyzer (113), which is subdivided by a semipermeable membrane (111) into a blood chamber (110) and a dialysis fluid chamber (108), and dialysis fluid in a dialysis fluid circulation (109) flows through the dialysis fluid chamber (108) of the dialyzer (113),. The device has a blood pump (115) for controlling a blood flow in the extracorporeal blood circulation (112), a dialysis fluid pump (107) for controlling a dialysis fluid flow in the dialysis fluid circulation (109) upstream or downstream from the dialyzer (113), for controlling the dialysis fluid flow upstream of downstream from the dialyzer, a balancing device (104) for setting up a fluid balance in the dialysis fluid circulation between an inflow (106) and an outflow (105) of the dialysis fluid chamber (113) as a measure of the ultrafiltration, as well as a regulating unit (101) for regulating the blood pump (115), the throttle (117) and/or the dialysis fluid pump (107). The pumps or the throttles (117) are regulated so that a predetermined ultrafiltration is achieved.
A device (1, 2) for regulating an ultrafiltration in a dialysis treatment in which the blood to be ultrafiltered flows through a blood chamber (110) of a dialyzer (113) which is subdivided by a semipermeable membrane (111) into a blood chamber (110) and a dialysis fluid chamber (108) in an extracorporeal blood circulation (112), and dialysis fluid in a dialysis fluid circulation (109) flows through the dialysis fluid chamber (108) of the dialyzer (113),
The device (1, 2) for regulating an ultrafiltration in a dialysis treatment in the blood to be ultrafiltered in an extracorporeal blood circulation (112) in which blood flows through a blood chamber (110) of a dialyzer (113) which is subdivided by a semipermeable membrane (111) into the blood chamber (110) and a dialysis fluid chamber (108), and dialysis fluid flows in a dialysis fluid circulation (109) through the dialysis fluid chamber (108) of the dialyzer (113),
The device (51) for regulating a hemofiltration in a hemofiltration treatment in which blood to be hemofiltered in an extracorporeal blood circulation (512) flows through a blood chamber (510) of a hemofilter (513) which is subdivided by a semipermeable membrane (511) into a blood chamber (510) and a filtrate chamber (508), having a blood pump (515) for controlling the blood flow in the extracorporeal blood circulation (512),
A method for regulating an ultrafiltration in a dialysis treatment in which blood to be ultrafiltered in an extracorporeal blood circulation (112) flows through a blood chamber (110) of a dialyzer (113) which is subdivided by a semipermeable membrane (111) into a blood chamber (110) and a dialysis fluid chamber (108), and dialysis fluid in a dialysis fluid circulation (109) flows through the dialysis fluid chamber (108) of the dialyzer (113), and in which upstream from the dialyzer (113) there are a dialysis fluid pump (107) for controlling a dialysis fluid flow in a second inflow to the dialysis fluid chamber (108), downstream from the dialyzer there is a throttle (117) for control of the dialysis fluid flow in an outflow out of the dialysis fluid chamber (108), a balancing device (104) for setting up a fluid balance in the dialysis fluid circulation between the inflow and the outflow out of the dialysis fluid chamber (108) as a measure of the ultrafiltration as well as a blood pump (107) for control of a blood flow rate in the extracorporeal blood circulation (109) and wherein the method comprises the following:
The method for regulating an ultrafiltration in a dialysis treatment in which blood to be ultrafiltered in an extracorporeal blood circulation (112) flows through a blood chamber (110) of a dialyzer (113) which is subdivided by a semipermeable membrane (111) into a blood chamber (110) and a dialysis fluid chamber (108), and dialysis fluid in a dialysis fluid circulation (109) flows through the dialysis fluid chamber (108) of the dialyzer and in which a dialysis fluid pump is provided downstream from the dialyzer (113) to control the dialysis fluid flow in an outflow out of the dialysis fluid chamber, a throttle is provided upstream from the dialyzer to control the dialysis fluid flow in an inflow to the dialysis fluid chamber, a balancing device (104) is provided for setting up a liquid balance in the dialysis fluid circulation (109) between the inflow and the outflow out of the dialysis fluid chamber (108) as a measure of the ultrafiltration, as well as a blood pump (115) for control of a blood flow in the extracorporeal blood circulation and such that the method includes the following:
The method for regulating a hemofiltration in a hemofiltration treatment in which blood to be hemofiltered in an extracorporeal blood circulation (512) flows through a blood chamber (510) of a hemofilter (513) which is subdivided by a semipermeable membrane (511) into a blood chamber (510) and a filtrate chamber (508) in a filtrate branch (509), and in which in the filtrate branch downstream from the hemofilter (513) a throttle (517) is provided for controlling the filtrate flow in an outflow out of the filtrate chamber, a flow meter (504) is provided for measuring the filtrate flow in the outflow out of the filtrate chamber (508) and the blood pump (515) is provided for control of a blood flow in the extracorporeal blood circulation (512), and wherein the method comprises the following:
Dependencies are inferred from the claim text.