Apparatus for extracorporeal blood treatment, disposable assembly for the apparatus

1 . An apparatus for extracorporeal blood treatment, comprising:

a treatment unit;

a blood circuit coupled to the treatment unit and comprising a blood removal line and a blood return line configured to connect to a vascular system of a patient;

a blood pump configured to couple to a pump section of the blood circuit;

a plurality of fluid lines having first ends configured to connect to respective containers and having second ends located at infusion sites on the blood removal line and/or on the blood return line and having second ends connected to the treatment unit;

a plurality of pumps active on the plurality of fluid lines and configured to pump fluid of the containers to the infusion sites on blood removal line and/or on the blood return line and to or from the treatment unit; and

a fluid dispatcher comprising a common zone, wherein at least two fluid lines of said plurality of fluid lines are connected one to the other at said common zone upstream of the infusion sites on the blood removal line and on the blood return line and of the treatment unit to selectively allow fluid flow between said at least two fluid lines through said common zone.

2 . The apparatus of claim 1 , wherein said plurality of fluid lines comprises a plurality of infusion lines comprising at least one of the second ends located at an infusion site on the blood removal line or on the blood return line; wherein some pumps of the plurality of pumps are active on said plurality of infusion lines; wherein at least two infusion lines of said plurality of infusion lines are connected one to the other at said common zone.

3 . The apparatus of claim 1 , wherein said plurality of fluid lines comprises:

a dialysate circuit comprising a dialysate line comprising a respective first end configured to connect to a dialysate container and a respective second end connected to the treatment unit; and

an effluent line configured to discharge fluid from the treatment unit;

wherein the plurality of pumps comprises a dialysate pump active on the dialysate line and an effluent pump active on the effluent line;

wherein the dialysate line and the effluent line are connected one to the other at said common zone.

4 . The apparatus of claim 3 , comprising a drainer, wherein the drainer comprises a drainer fluid line configured to connect the common zone of the fluid dispatcher to the effluent line, and a drainer flow controller configured to selectively allow fluid flow between the common zone and the effluent line.

5 . The apparatus of claim 4 , wherein the drainer flow controller comprises an occlusive pump.

6 . The apparatus of claim 4 , comprising a plurality of flow controllers placed on the plurality of fluid lines and between the pumps and the infusion sites on one or more of: the blood removal line, the blood return line, and the treatment unit, wherein each flow controller comprises a two-way valve configured to selectively allow or prevent fluid flow;

and wherein the drainer flow controller comprises a two-way valve configured to selectively allow or prevent fluid flow.

7 . The apparatus of claim 4 , wherein the drainer comprises a drainer air detector arranged on the drainer fluid line and configured to detect gas in a liquid fluid flow between the common zone of the fluid dispatcher and the effluent line.

8 . The apparatus of claim 4 , comprising a control unit connected to the pumps and to the fluid dispatcher, the apparatus also comprising an air detector array placed upstream or downstream the pumps and configured to detect gas in at least one of the fluid lines of the plurality of fluid lines; wherein the control unit is connected to the drainer and to the air detector array; wherein the control unit is configured to command execution of a task for removing air, said task comprising:

receiving a signal from the air detector array indicative of detected gas upstream at least one of the pumps;

stopping said at least one of the pumps where gas is detected; and

activating the drainer and controlling the fluid dispatcher to remove the gas.

9 . The apparatus of claim 1 , wherein said plurality of fluid lines comprises:

a pre blood pump line comprising a respective first end configured to connect to a pre blood pump container and a respective second end located at an infusion site on the blood removal line;

a pre-infusion line comprising a respective first end configured to connect to an infusion container and a respective second end located at an infusion site on the blood removal line downstream from the blood pump and at least one post-infusion line comprising a respective first end configured to connect to an infusion container and a respective second end located at an infusion site on the blood return line; and

a dialysate circuit comprising a dialysate line comprising a respective first end configured to connect to a dialysate container and a respective second end connected to the treatment unit;

wherein an effluent line is configured to discharge fluid from the treatment unit;

wherein the plurality of pumps comprises a pre blood pump active on the pre blood pump line and an infusion pump active on the pre-infusion line and a dialysate pump active on the dialysate line and wherein an effluent pump is active on the effluent line.

10 . The apparatus of claim 1 , wherein the fluid dispatcher comprises a plurality of valves placed at the common zone and configured to selectively allow fluid flow between said at least two fluid lines.

11 . The apparatus of claim 1 , wherein the fluid dispatcher is configured to allow a bidirectional flow in at least part of said at least two fluid lines.

12 . The apparatus of claim 1 , wherein the fluid dispatcher comprises a valve on each of said at least two fluid lines of the plurality of fluid lines to selectively allow fluid flow between the respective fluid line and the common zone.

13 . The apparatus of claim 12 , wherein each of said at least two fluid lines of the plurality of fluid lines comprises, upstream from the respective pump with respect to a fluid flow from the respective container, a branch connected to the respective valve.

14 . The apparatus of claim 1 , comprising a plurality of flow controllers placed on the plurality of fluid lines and between the plurality of pumps and the infusion sites on one or more of: the blood removal line, the blood return line, and the treatment unit.

15 . The apparatus of claim 14 , wherein at least one of the plurality of flow controllers is placed on two or more fluid lines of the plurality of fluid lines and is configured to selectively allow fluid flow into one or more of said two or more fluid lines of the plurality of fluid lines.

16 . The apparatus of claim 1 , further comprising an air detector array configured to detect gas on each of said at least two fluid lines, wherein the air detector array comprises an air detector arranged on each of said at least two fluid lines of the plurality of fluid lines, each air detector being arranged on the respective line proximate the respective container and/or immediately downstream from the respective pump with respect to a fluid flow from the container.

17 . The apparatus of claim 16 , wherein each of said at least two fluid lines of the plurality of fluid lines includes, upstream or downstream the respective pump with respect to a fluid flow from the respective container, a branch, wherein said branches are connected one to the other at the common zone.

18 . The apparatus of claim 1 , comprising a control unit connected to the pumps and to the fluid dispatcher; wherein the control unit is configured to:

control at least one of said pumps and to control the fluid dispatcher so that fluid from one or more of the containers is conveyed to the second end of one or more of the fluid lines of the plurality of fluid lines; or

control at least two of said pumps and to control the fluid dispatcher so that fluids from said at least two pumps is mixed and then conveyed to the second end of one or more of the fluid lines of the plurality of fluid lines.

19 . An apparatus for extracorporeal blood treatment, comprising:

a treatment unit;

a blood circuit coupled to the treatment unit and comprising a blood removal line and a blood return line configured to connect to a vascular system of a patient;

a blood pump configured to couple to a pump section of the blood circuit;

a dialysate circuit comprising a dialysate line comprising a first end configured to connect to a dialysate container and a second end connected to the treatment unit;

an effluent line configured to discharge fluid from the treatment unit;

a plurality of infusion lines comprising first ends configured to connect to infusion containers and second ends located at infusion sites on the blood removal line and/or on the blood return line;

a dialysate pump active on the dialysate line;

an effluent pump active on the effluent line;

a plurality of pumps active on said plurality of infusion lines and configured to pump fluid of the containers to the infusion sites on blood removal line and/or on the blood return line;

a fluid dispatcher comprising a common zone, wherein the dialysate line and the effluent line are connected one to the other at said common zone to selectively allow fluid flow between the dialysate line and the effluent line through said common zone;

wherein at least two fluid lines of said plurality of infusion lines are connected one to the other at said common zone upstream the infusion sites on blood removal line and on the blood return line to selectively allow fluid flow between said at least two fluid lines through said common zone.

20 . An apparatus for extracorporeal blood treatment, comprising:

a treatment unit;

a blood circuit coupled to the treatment unit and comprising a blood removal line and a blood return line configured to connect to a vascular system of a patient;

a blood pump configured to couple to a pump section of the blood circuit;

a dialysate circuit comprising a dialysate line comprising a first end configured to connect to a dialysate container and a second end connected to the treatment unit;

an effluent line configured to discharge fluid from the treatment unit;

a plurality of infusion lines comprising first ends configured to connect to infusion containers and second ends located at infusion sites on the blood removal line and/or on the blood return line;

a dialysate pump active on the dialysate line;

an effluent pump active on the effluent line;

a plurality of pumps active on said plurality of infusion lines and configured to pump fluid of the containers to the infusion sites on blood removal line and/or on the blood return line;

a fluid dispatcher comprising a common zone;

wherein at least two fluid lines of said plurality of infusion lines are connected one to the other at said common zone upstream the infusion sites on blood removal line and on the blood return line to selectively allow fluid flow between said at least two fluid lines through said common zone.