BLOOD TREATMENT APPARATUS

• US 20110046535A1
• Filed: 04/14/2009
• Published: 02/24/2011
• Est. Priority Date: 04/15/2008
• Status: Active Grant

• Current Assignee: Gambro Lundia AB (Baxter International Inc.)
• Original Assignee: Gambro Lundia AB (Baxter International Inc.)
• Inventors: Nilsson, se, Jansson, Olof, Jönsson, Lennart, Holmer, Mattias
• Granted Patent: US 8,652,082 B2
• Time in Patent Office: Days
• US Class Current: 604/6.11
• CPC Class Codes: A61M 1/30 Single needle dialysis ; Reciprocating systems, alternately withdrawing blood from and returning it to the patient, e.g. single-lumen-needle dialysis or single needle systems for hemofiltration or pheresis
• CPC Class Codes: A61M 1/302 having a reservoir for withdrawn untreated blood
• CPC Class Codes: A61M 1/303 having a reservoir for treated blood to be returned
• CPC Class Codes: A61M 1/306 Pressure control, e.g. using substantially rigid closed or gas buffered or elastic reservoirs
• CPC Class Codes: A61M 1/3626 Gas bubble detectors
• CPC Class Codes: A61M 2205/331 used as turbidity change detectors, e.g. for priming-blood or plasma-hemoglubine-interface detection
• CPC Class Codes: A61M 60/113 in other functional devices, e.g. dialysers or heart-lung machines
• CPC Class Codes: A61M 60/268 the displacement member being flexible, e.g. membranes, diaphragms or bladders
• CPC Class Codes: A61M 60/37 Haemodialysis, haemofiltration or diafiltration
• CPC Class Codes: A61M 60/427 the force acting on the blood contacting member being hydraulic or pneumatic
• CPC Class Codes: A61M 60/531 using blood pressure data, e.g. from blood pressure sensors

Abstract

A proposed blood treatment apparatus includes: a blood treatment unit, at least one fluid pump and at least one blood pump. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Additionally, at least one of the fluid pumps is configured to control the operation of at least one blood pump via the blood treatment fluid. Moreover, at least one of the blood pumps is integrated into a joint apparatus element, which includes the blood treatment unit. Thus, this blood pump and the unit may be mounted as well as be discarded jointly.

Claims

1. A blood treatment apparatus, comprising:

a blood treatment unit configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid,

at least one fluid pump configured to pass blood treatment fluid through the blood treatment unit, and

at least one blood pump configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit, and deliver treated blood to a target vessel, wherein

at least one of the at least one fluid pump is configured to control the operation of at least one of the at least one blood pump via the blood treatment fluid, and

at least one of the at least one blood pump is integrated into a joint apparatus element comprising the blood treatment unit.

2. The blood treatment apparatus according to claim 1, wherein the joint apparatus element is adapted to be disposable.

3. The blood treatment apparatus according to claim 1, wherein each of the at least one blood pump comprises a pumping chamber and a flexible member separating the pumping chamber into a first accumulation container and a second accumulation container, the flexible member being movable within the pumping chamber so as to vary a volume relationship between the first and second accumulation containers, the second accumulation container is being configured to receive an amount of working fluid to act on the flexible member, thereby pumping blood from the first accumulation container, and the at least one fluid pump and the at least one blood pump being arranged such that the blood treatment fluid constitutes the working fluid for the at least one blood pump.

4. The blood treatment apparatus according to claim 1, further comprising first and second blood pumps, said first and second blood pumps being integrated into the joint apparatus element.

5. The blood treatment apparatus according to claim 1, wherein each of the at least one blood pump is configured to be in fluid connection with the treatment unit throughout an entire treatment of an amount of blood from the blood source.

6. The blood treatment apparatus according to claim 1, wherein each of the at least one fluid pump is configured to be in fluid connection with the treatment unit throughout an entire treatment of an amount of blood from the blood source.

7. The blood treatment apparatus according to claim 1, comprising:

a first blood conduit configured to be connected to the blood source,

a second blood conduit configured to be connected to the target vessel, and

at least one needle connector configured to connect the first and second blood conduits with at least one needle.

8. The blood treatment apparatus according to claim 7, wherein the first blood conduit comprises a primary safeguard module configured to check at least one quality parameter of the treated blood delivered to the target vessel.

9. The blood treatment apparatus according to claim 8, wherein the primary safeguard module comprises an air bubble detector adapted to detect any undesired gas bubbles in the treated blood being delivered to the target vessel.

10. The blood treatment apparatus according to claim 8, wherein the primary safeguard module comprises a priming fluid detector device configured to detect if priming fluid or blood is passed through the apparatus.

11. The blood treatment apparatus according to claim 8, wherein the second blood conduit comprises a secondary safeguard module configured to check at least one quality parameter of the untreated blood received from the blood source.

12. The blood treatment apparatus according to claim 1, wherein

the joint apparatus element comprises a body module having an essentially cylindrical outline with a central length axis, and

at least one of the at least one blood pump in the joint apparatus element is arranged at an end segment of the blood treatment unit such that the at least one blood pump is arranged essentially symmetrically with respect to the central length axis.

13. The blood treatment apparatus according to claim 1, wherein

the joint apparatus element comprises a body module having an essentially cylindrical outline with a central length axis, and

at least one of the at least one blood pump in the joint apparatus element is arranged on a side surface of the blood treatment unit such that the at least one blood pump is arranged essentially asymmetrically with respect to the central length axis.

14. The blood treatment apparatus according to claim 1, wherein at least one of the at least one blood pump in the joint apparatus element is provided with an inlet for blood treatment fluid that is separate from an outlet for the blood treatment fluid.