SYSTEM FOR REMOVAL AND INFUSION OF BODY FLUID, AND METHOD FOR ITS OPERATION

• US 20100268118A1
• Filed: 09/26/2008
• Published: 10/21/2010
• Est. Priority Date: 09/27/2007
• Status: Active Grant

• Current Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Schweiger, Gerd
• Granted Patent: US 8,444,594 B2
• Time in Patent Office: Days
• US Class Current: 600/573
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150221 Valves
• CPC Class Codes: A61B 5/150992 Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings, valves tubing connectors and couplings A61M39/00
• CPC Class Codes: A61B 5/153 Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
• CPC Class Codes: A61M 39/223 Multiway valves
• CPC Class Codes: F16K 11/0853 having all the connecting conduits situated in a single plane perpendicular to the axis of the plug
• CPC Class Codes: G01N 35/1097 characterised by the valves valves in general F16K

Abstract

The invention relates to a system for the extraction and infusion of a body fluid, in particular a system for the extraction and infusion of blood, having a fluid distribution device with an outer structural element at which several connection ports are formed and an inner structural element which is arranged, at least partially, in a seat in the outer structural element, is displaceable between positions and has a hollow space configured for the intake and discharge of a fluid. The invention also relates to a method for operating a system for the extraction and infusion of a body fluid.

Claims

1-14. -14. (canceled)

15. A system for the extraction and infusion of body fluids comprising:

a fluid distribution device comprising;

an outer structural element, the outer structural element having a seat formed therein and a plurality of connection ports, and

an inner structural element partially arranged in the seat formed in the outer structural element, the inner structural element having a hollow space defined therein to intake and discharge fluid,

wherein the inner structural element is movable to a plurality of positions, including;

a first position where (i) the hollow space fluidly connects a first connection port to a first assigned connection port of the plurality of connection ports of the outer structural element such that bi-directional fluid flow is permitted between the first connection port and the first assigned connection port, and (ii) the hollow space is separated from a second connection port and a second assigned connection port of the plurality of connection ports of the outer structural element, and

a second position where (i) the hollow space fluidly connects the second connection port to the second assigned connection port such that bi-directional fluid flow is permitted between the second connection port and the second assigned connection port, and (ii) the hollow space is separated from the first connection port and the first assigned connection port.

16. The system of claim 15, wherein the hollow space of the inner structural element is a channel structure.

17. The system of claim 15, wherein the inner structural element is movable to a third position where:

(i) the hollow space is fluidly connected with a third connection port configured to advance a function fluid into the hollow space, and

(ii) the hollow space is separated from the first connection port, the first assigned connection port, the second connection port, and the second assigned connection port.

18. The system of claim 17, wherein the hollow space is separated from the third connection port when the inner structural element is placed in the first position.

19. The system of claim 18, wherein the hollow space is separated from the third connection port when the inner structural element is placed in the second position.

20. The system of claim 15, wherein the inner structural element is moveable between the plurality of positions by a rotary movement.

21. The system of claim 20, wherein the inner structural element and the seat of the outer structural element have a positive fit.

22. The system of claim 20, wherein the first position and the second position are adjacent positions of the inner structural element.

23. The system of claim 15, wherein the inner structural element has a plurality of intermediate positions where the hollow space is separated from any of the plurality of connection ports of the outer structural element.

24. The system of claim 23, wherein one of the plurality of intermediate positions is located between the first position and the second position.

25. A method for operating a system for the extraction and infusion of a body fluid, the system including a fluid distribution device comprising an outer structural element having a seat formed therein and a plurality of connection ports and an inner structural element partially arranged in the seat formed in the outer structural element, the inner structural element having a hollow space formed therein to intake and discharge fluid, the method comprising:

placing the inner structural element in a first position where (i) bi-directional fluid flow between a first connection port and a first assigned connection port of the plurality of connection ports is permitted through the hollow space, and (ii) the hollow space is separated from a second connection port and a second assigned connection port of the plurality of connection ports of the outer structural element,

introducing a body fluid sample through the first connection port into the hollow space,

moving the inner structural element to a second position where (i) bi-directional fluid flow between the second connection port and the second assigned connection port of the plurality of connection ports is permitted through the hollow space, and (ii) the hollow space is separated from the first connection port and the first assigned connection port of the plurality of connection ports of the outer structural element,

discharging a portion of the body fluid sample from the hollow space through the second connection port to an analyzing apparatus,

moving the inner structural element to the first position, and

introducing an infusion fluid from an infusion apparatus into the first assigned connection port for discharge through the hollow space and the first connection port.

26. The method of claim 25, further comprising:

moving the inner structural element to a third position where the hollow space is fluidly connected to a third connection port of the plurality of connection ports and the hollow space is separated from the first connection port, the first assigned connection port, the second connection port, and the second assigned connection port.

27. The method of claim 25, wherein introducing the body fluid sample through the first connection port into the hollow space includes taking a blood sample from a patient.

28. The method of claim 25, further comprising introducing a function fluid into the hollow space to rinse the hollow space when the inner structural element is placed in a third position.

29. A fluid distribution device for use with a system for extraction and infusion of a body fluid, comprising:

an outer structural element, the outer structural element having a plurality of connection ports, and

an inner structural element partially positioned in the outer structural element, the inner structural element having a hollow space defined therethrough,

wherein the inner structural element is rotatable to a plurality of positions, including;

a first position where fluid flow is permitted between a first connection port and a first assigned connection port, and

a second position where fluid flow is permitted between a second connection port and a second assigned connection port.

30. The fluid distribution device of claim 29, wherein the hollow space of the inner structural element is a channel structure.

31. The fluid distribution device of claim 29, wherein the inner structural element is rotatable to a third position where:

(i) the hollow space is fluidly connected with a third connection port configured to advance a function fluid into the hollow space, and

(ii) the hollow space is separated from the first connection port, the first assigned connection port, the second connection port, and the second assigned connection port.

32. The fluid distribution device of claim 29, wherein the inner structural element has a plurality of intermediate positions where the hollow space is separated from any of the plurality of connection ports of the outer structural element.