VALVE DEVICE, EFFLUE BAG AND PROCEDURE

Description

[0001] The present invention relates to a valve device according to claim 1 and an effluent bag according to claim 11. It further relates to a set according to claim 12, a method according to claim 14 for preparing an effluent bag, and a method according to claim 15 for emptying the effluent bag, as well as a blood treatment device according to claim 16 or according to the respective preambles or generic terms of these claims.

[0002] Extracorporeal blood therapy is a well-known procedure. In this process, blood is drawn from the patient and circulated extracorporeally, for example, through a blood filter. The blood filter has a blood chamber through which the blood flows and a dialysis fluid chamber through which the dialysis fluid flows. These two chambers are separated by a semipermeable membrane. Blood and dialysis fluid are usually passed through the blood filter in a countercurrent flow. The blood is purified in the blood filter, and the dialysis fluid, upon exiting the blood filter, is considered used and is discarded as dialysate. In addition to the dialysate, the discarded fluid also includes filtrate, which comprises water removed from the blood in the blood filter. The filtrate and dialysate are referred to individually or together, for simplicity, as effluent.

[0003] In practice, the effluent is fed into an effluent bag via an effluent inlet line and initially stored therein. After completion of the blood treatment, or at bag-emptying intervals (intervals in which the bag is emptied) during the blood treatment, the effluent is discarded from the effluent bag, which is held over a sink or drain, into the bag. DE 10 2017 116142 A1 discloses an effluent bag system with a three-way stopcock as a switching device for controlling the effluent flow between filling and emptying, wherein the stopcock has a handle section for manual operation and is switchable between different positions.

[0004] TADANO KOTARO ET AL: "Development of a Four-Way Pinch-Type Servo Valve for Pneumatic Actuator", APPLIED SCIENCES, Vol. 10, No. 3, February 5, 2020 (2020-02-05), Page 1066, XP055876589, ISSN: 2076-3417, DOI: 10.3390 / app10031066 discloses a pinch-type valve with a cam mechanism for blocking / releasing fluid lines by mechanically compressing elastic hoses, wherein actuators are switchable between different positions for flow control in pneumatic systems.

[0005] One object of the present invention is to provide a valve device for use with an effluent bag used in blood treatment and another effluent bag for use in blood treatment.

[0006] Furthermore, a set comprising a valve device according to the invention, a method for preparing the effluent bag for an upcoming blood treatment, a method for emptying the effluent bag and a blood treatment device are to be specified.

[0007] The problem according to the invention is solved by a valve device having the features of claim 1 and by an effluent bag having the features of claim 11. It is further solved by a set having the features of claim 12, by a method for preparing an effluent bag having the features of claim 14, and by a method for emptying the effluent bag having the features of claim 15, and by a blood treatment device having the features of claim 16.

[0008] The present invention relates to a valve device, designed and intended for connection with an outlet tap, which is associated with or connected to an effluent outlet opening of an effluent bag for collecting effluents generated during blood treatment. Such an outlet tap, to which the valve device can be connected for its intended use, is usually already arranged in or on an effluent drain line connected to the effluent outlet opening, through which, during use, the effluent present in the effluent bag can drain completely or partially to be discarded, or on a connection for such an effluent drain line.Such a tap has an actuating element which can be moved into a first position in which the flow from the effluent outlet opening along the effluent drain line is blocked, and into a second position in which the flow from the effluent outlet opening along the effluent drain line and out of the effluent bag is to be released.

[0009] The valve device has a holding section (alternatively: connecting section) by means of which the valve device is held, preferably by positive and / or force-fit, on or to the outlet tap or can be held or connected to it.

[0010] Furthermore, the valve device has an insertion section which serves to insert a second fluid line or a section thereof into the valve device or a section thereof. The second fluid line can also be referred to here as a connecting line or "extension" of an effluent inlet line, discussed in more detail below, through which effluent from the dialysis fluid chamber of the treatment device is supplied or directed into the effluent bag.

[0011] Furthermore, the valve device has a locking element which can be switched between at least a first and a second position. The locking element is arranged to act directly or indirectly on the second fluid line in the first position to prevent flow along the second fluid line, and, in use, preferably to electrically insulate an electrically conductive liquid column in the second fluid line and / or to block the fluid line, and to allow flow along the second fluid line in the second position.

[0012] The present invention further relates to an effluent bag which is designed to collect effluent accumulating during blood treatment and which also has a valve device according to the invention.

[0013] The effluent bag according to the invention has an effluent inlet opening, preferably closable, and a separate effluent outlet opening, preferably closable. The effluent inlet opening and the effluent outlet opening serve to connect the interior of the effluent bag to an exterior of the effluent bag for the supply and discharge of effluent into and out of the effluent bag, respectively.

[0014] Furthermore, the effluent bag according to the invention comprises the outlet valve connected or to be connected to the effluent outlet opening, which has an actuating element and is arranged in or on an effluent drain line, wherein the actuating element can be moved into a first position of the outlet valve, in which the flow from the effluent outlet opening along the effluent drain line is blocked, and into a second position, in which the flow from the effluent outlet opening along the effluent drain line and out of the effluent bag is to be released.

[0015] A set according to the invention comprises a valve device according to the invention and a second fluid line for insertion into the insertion section of the valve device according to the invention.

[0016] The method according to the invention serves to prepare an effluent bag for collecting effluents generated during blood treatment.

[0017] This method includes providing an effluent bag or set according to the invention.

[0018] The procedure further includes connecting the second fluid line to both the effluent inlet line and the effluent outlet. Suitable connectors are provided for this purpose at the free ends of the second fluid line of the effluent bag or the valve assembly of the set.

[0019] The insertion of the second fluid line into the insertion section of the valve device, if this has not already been done, is also included in the present invention.

[0020] Finally, the present invention comprises connecting the valve device to the outlet tap by means of the retaining section or connecting section of the valve device.

[0021] The inventive method for emptying an effluent bag comprises providing an inventive effluent bag or an inventive set, preferably each prepared according to the aforementioned inventive method for preparing the effluent bag.

[0022] Furthermore, the second method comprises actuating a switching element of the valve device according to the invention in such a way that a fluid connection is established between the inside of the effluent bag and the inside of the effluent drain line.

[0023] All the advantages achievable with the methods according to the invention can also be achieved without diminishing quality in certain embodiments of the invention with the devices according to the invention, and vice versa.

[0024] The blood treatment device according to the invention is connected to an effluent bag according to the invention or to a set according to the invention, wherein the effluent bag according to the invention or the effluent bag of the set according to the invention is preferably prepared according to the method according to the invention for preparing the effluent bag.

[0025] Inventory embodiments may include some, several, or all of the following features in any combination, provided that this is not technically impossible to the person skilled in the art. Advantageous further developments of the present invention are also the subject of the dependent claims and embodiments.

[0026] In all the following explanations, the use of the expression "may be" or "may have" etc. is to be understood as synonymous with "is preferably" or "has preferably" etc. and is intended to explain embodiments according to the invention.

[0027] Whenever numerical terms are mentioned herein, the expert understands them to indicate a lower numerical limit.

[0028] Provided this does not lead to any contradiction recognizable to a person skilled in the art, a person skilled in the art will therefore always interpret the expression "ein" or "einem" as meaning "at least one" or "at least one". This understanding is encompassed by the present invention, as is the interpretation that a numerical word such as "ein" can alternatively be meant as "exactly one", wherever this is technically feasible to a person skilled in the art. Both are encompassed by the present invention and apply to all numerical words used herein.

[0029] When an embodiment is mentioned herein, it represents an exemplary embodiment according to the invention.

[0030] If it is disclosed herein that the object according to the invention has one or more features in a particular embodiment, it is also disclosed herein that the object according to the invention expressly does not have precisely this or these features in other embodiments, which are also according to the invention. z. B. In the sense of a disclaimer. For each embodiment mentioned herein, it is therefore implied that the opposite embodiment, for example formulated as a negation, is also disclosed.

[0031] Inventive embodiments may have one, several or all of the features mentioned above and / or below in any technically possible combination.

[0032] In some embodiments, the outlet valve has a through-opening or through-lumen for passing a section of an effluent drain line or effluent flowing in the effluent drain line through the outlet valve. The outlet valve may have a handle section which, in its intended use, serves to manually move an actuating element of the outlet valve from its first position to its second position, and vice versa.

[0033] In some embodiments of the valve device according to the invention, the valve device and / or outlet valve are not in operative or fluid connection with a pneumatic drive device.

[0034] In some embodiments of the valve device according to the invention, its locking element is arranged so that, when the actuating element of the outlet tap is moved into the first position, it is forcibly moved into the second position, and so that, when the actuating element is moved into the second position, it is forcibly moved into the first position.

[0035] In some embodiments, the actuating element of the outlet valve is arranged so that, when the locking element is moved into the first position, it is forcibly moved into the second position, and so that, when the locking element is moved into the second position, it is forcibly moved into the first position.

[0036] In some embodiments, the locking element is arranged so that, when the actuating element of the outlet valve is moved to the second position, it is forcibly guided to already assume or maintain a position in which a flow along the second fluid line is or remains prevented, and in use preferably an electrically conductive liquid column in the second fluid line is electrically insulated or the fluid line is or remains blocked before the actuating element assumes the second position or first allows a flow through the effluent drain line.

[0037] In some embodiments, the retaining section of the valve device according to the invention comprises a holder, a rotary latch, and a cover. The holder includes an insertion section for the second fluid line, which can be closed with the rotary latch, serving as a safety device to prevent the second fluid line from being removed from the valve device.

[0038] The lid can be provided on the holder in such a way that the lid is movable between a first, open lid position for inserting or removing the outlet valve and, if applicable, also a section of the first fluid line into or out of the holding section or the holder, and a second, closed lid position for holding the outlet valve in the holding section by force and / or form locking.

[0039] In some embodiments, the retaining section comprises a holder (e.g., the one mentioned above) for receiving the outlet valve or a section thereof and a cover (e.g., the one mentioned above), wherein the holder and / or cover are designed with a snap-fit ​​or click-fit system. The snap-fit ​​or click-fit system serves to connect them to each other or jointly and / or to at least partially close the retaining section or the holder by means of the cover.

[0040] In some embodiments of the valve device according to the invention, the second fluid line or a section thereof is inserted into the insertion section.

[0041] In some embodiments, the outlet valve or a section thereof is inserted into the retaining section of the valve assembly. Alternatively, the retaining section is connected to the outlet valve.

[0042] In some embodiments, the second fluid line has a first free end for connection to an effluent inlet line and a second free end for connection to an effluent inlet opening of an effluent bag (or a fluid line connected thereto). The ends may be connectors, e.g., Luer-lock connectors, or of another type.

[0043] In some embodiments, the valve device according to the invention further comprises a switching element. The switching element is provided and arranged for the manual – direct or indirect – switching of the locking element from the first position to the second position and vice versa.

[0044] In this case, the switching element is preferably arranged such that when the locking element is manually switched from the first position to the second position, the actuating element or a connecting section for connecting the switching element to the actuating element is moved from the second position to the first position and vice versa.

[0045] In some embodiments, the locking element is arranged to transition, during its rotation through a first angle α1, between a second position in which the second fluid line is maximally opened by the locking element and a first position in which the second fluid line is maximally closed by the locking element. The actuating element can be arranged, during its rotation through a second angle α2, to transition between a first position in which the effluent drain line is maximally closed by the actuating element and a second position in which the actuating element first allows flow through the effluent drain line and is thereby opened. The first angle α1 is smaller than the second angle α2.

[0046] In some embodiments, the effluent drain line is connected to at least one pump and / or a pump drive of a pump.

[0047] In some embodiments of the set according to the invention, it further comprises an effluent bag for collecting effluents generated during blood treatment. The effluent bag itself has an effluent inlet opening and a separate effluent outlet opening, as well as an outlet stopcock for closing the effluent outlet opening, or a projection for the outlet stopcock. The valve device is preferably configured to hold the outlet stopcock, preferably by means of its retaining section, preferably by positive and / or force-fit.

[0048] In some embodiments, the pump or pump drive in the effluent drain line has at least one magnetically levitated or driven pump section, in particular a pump head. This pump section or pump head is, for example, designed as an impeller pump head or as its rotor.

[0049] In some embodiments, the blood treatment device according to the invention is designed as a hemodialysis device, hemofiltration device or hemodiafiltration device, in particular as a device for use in continuous venous hemodiafiltration (CVV-HDF) and / or for use in acute dialysis.

[0050] In some embodiments, the blood treatment device optionally includes a charging station for a power source to drive the pump. The power source can be a low-voltage or low-current source.

[0051] In some embodiments, the effluent bag can be a container of any kind, for example a container with a flexible outer skin such as a film, or made of film, a container with a hard outer skin, or made of a hard outer skin, such as a canister, etc.

[0052] In certain embodiments, the outlet valve is actuated in such a way that a fluid connection which exists between the inside of the effluent bag and the inside of the effluent drain line is interrupted.

[0053] In some embodiments, the outlet valve acts as an electrical insulator. This preferably means that fluids that can enter the outlet valve via a connector or connection (such as the effluent flow into the effluent bag), and the surfaces they touch, cannot come into contact with other fluids that can enter the outlet valve via another connector or connection (such as the effluent flow out of the effluent bag), and the surfaces they touch, for the purpose of transmitting electrical current, and / or cannot transmit current.

[0054] In some embodiments, the second fluid line may be factory-installed, i.e., the second fluid line is already installed upon delivery and secured against removal, for example by connecting or snapping two components, in particular housing parts, e.g., the rotary latch and the holder, together, wherein the connecting or snapping prevents subsequent removal of the second fluid line from the valve device.

[0055] In some embodiments, the second fluid line cannot be removed from the valve device, at least not without damage, for example by means of an undercut design.

[0056] In certain embodiments, it may be provided that the actuation of the switching element is only permitted if a second fluid line is actually inserted into the insertion section of the valve device. This can be achieved, for example, by means of a pin against which the second fluid line presses. If the pin is not pressed by the second fluid line, then the switching lever preferably cannot be actuated.

[0057] Some or all embodiments of the invention may have one, several or all of the advantages mentioned above and / or below.

[0058] According to the invention, it is proposed that at any given time either the effluent inlet line or the effluent outlet line is insulated and interrupted. This advantageously and reliably ensures that at no time is there a conductive connection between the effluent inlet line and the outlet, i.e., that the patient is never grounded to the outlet. This advantageously avoids the risk of an electrically conductive contact between the fluid and ground occurring when the contents of the effluent bag are drained, which would cause the permissible patient leakage currents to be exceeded. This advantageously contributes to increased patient safety.

[0059] An advantage of the present invention is that, unlike conventional effluent bags, the effluent inlet line of the effluent bag according to the invention does not need to be manually disconnected from the bag for safety reasons to ensure fluidic separation of the bag and its contents from the patient when the effluent bag is to remain attached to the weighing device of the treatment apparatus during emptying. Nevertheless, the present invention ensures that even if the effluent bag remains attached to and connected to the treatment apparatus, the risk of the patient being harmed by electrical currents is eliminated.

[0060] Another advantage of the present invention is the low effort required to implement the invention.

[0061] An advantage achieved by the invention is that both actions, namely filling and emptying the effluent bag, are coupled by integrating the components required for these actions into a single component, thus enabling them to be operated simultaneously. This forced coupling helps prevent manual steps associated with emptying from being overlooked. Furthermore, it eliminates the need for manual or automated steps. Advantageously, the flow paths between the spout or drain on the one hand and the dialyzer or patient on the other can be electrically isolated in the present invention, which enhances patient safety.

[0062] Furthermore, it is advantageous that the valve device is designed to be manually operated. Therefore, the present invention does not require any intervention in the control or regulation of the blood treatment device and thus also advantageously allows for cost-effective retrofitting of existing systems.

[0063] The present invention is described below by way of example only, with reference to the accompanying figures. In these figures, the same reference numerals denote identical or the same components. The following applies: Fig. 1 Figure 1 shows a simplified representation of a blood treatment device according to the invention with an extracorporeal blood circulation in an exemplary embodiment; Fig. 2a The figure shows in simplified form a plurality of lines and the functioning of a set according to the invention with an indicated valve device according to the invention and an effluent bag according to the invention in a state in which effluent can be supplied to the effluent bag by means of the effluent supply line; Fig. 2b shows in simplified form the lines and the set according to the invention. Fig. 2a in a state in which the effluent bag can be emptied via the effluent drain line; Fig. 3 The figure shows a schematically simplified representation of an effluent bag according to the invention in a first embodiment with a valve device according to the invention, which is shown in a second embodiment; Fig. 4 shows in a top view the valve device according to the invention. Fig. 3 in magnification; Fig. 5a Figure 1 shows a schematically simplified representation of a third embodiment of the valve device according to the invention, partly in a cross-section together with an outlet tap in an unassembled state, in which the outlet tap is not inserted into the valve device; Fig. 5b The valve device according to the invention is shown in a schematically simplified representation. Fig. 5a partly in a cross-section together with the outlet valve in the assembled state, in which the outlet valve is inserted into the valve device; Fig. 6a shows the cross-sectional view of the valve device according to the invention. Fig. 5a oder 5b in the assembled state together with an outlet tap in a first state; Fig. 6b shows in sectional view the valve device of the Fig. 6a in the assembled state together with an outlet tap in a second state; Fig. 7a shows a top view of a locking element of an exemplary valve device according to the invention in a first position in which a second fluid line running through the valve device is open; Fig. 7b shows a top view of the locking element of the Fig. 7a in a second position in which the second fluid line is closed; Fig. 8a shows a top view of an outlet tap, left from the outside, right in an indicated longitudinal section view in which the effluent drain line is closed; Fig. 8b shows a top view of an outlet tap, on the right from the outside, on the left in an indicated longitudinal section view in which the effluent drain line is open; Fig. 9a shows a longitudinal section with a top view of a locking element of the valve device according to the invention in a further embodiment; Fig. 9b shows a longitudinal section with a top view of an actuating element of an outlet valve; Fig. 10a shows a cross-section through a first embodiment of a locking element of the valve device according to the invention in its second position; Fig. 10b displays the locking element Fig. 10a in its first position; Fig. 11a shows a cross-section through a second embodiment of a locking element of the valve device according to the invention in its second position; Fig. 11b displays the locking element Fig. 11a in its first position; Fig. 12a shows an exemplary process according to the invention for preparing an effluent bag for collecting effluents generated during blood treatment; and Fig. 12b shows an exemplary process for emptying an effluent bag according to the invention.

[0064] Fig. 1 The figure shows, in a highly simplified representation, a blood treatment device 100 according to the invention, connected to an extracorporeal blood circulation 300.

[0065] The extracorporeal blood circulation 300 has a first conduit 301, here in the form of an arterial conduit section.

[0066] The first line 301 is in fluid connection with a blood treatment device, here by way of example a blood filter or dialyzer 303. The blood filter 303 has a dialyzing fluid chamber 303a and a blood chamber 303b, which are separated from each other by a mostly semi-permeable membrane 303c.

[0067] The extracorporeal blood circulation 300 also includes at least one second line 305, here in the form of a venous line segment. Both the first line 301 and the second line 305 can serve to connect to the vascular system of the patient (not shown).

[0068] The first line 301 is optionally connected to a (first) hose clamp 302 for locking or closing the line 301. The second line 305 is optionally connected to a (second) hose clamp 306 for locking or closing the line 305.

[0069] The in Fig. 1 The blood treatment device 100, represented only by some of its features and schematically, includes a blood pump 101. During the treatment of the patient, the blood pump 101 pumps blood through sections of the extracorporeal blood circulation 300 and towards the blood filter or dialyzer 303, as shown by the small arrowheads which generally indicate the direction of flow in each of the figures.

[0070] Fresh dialysate is pumped from a source 200 along the dialysate inlet line 104 into the dialysate chamber 303a by means of a dialysate pump 121, which can be designed as a roller pump or as an otherwise occluding pump. The dialysate leaves the dialysate chamber 303a as dialysate, optionally enriched with filtrate, towards the effluent bag 400 and is also referred to as effluent therein.

[0071] Source 200 can be, for example, a bag or a container. Source 200 can also be a fluid line from which liquid, generated or mixed online and / or continuously, is supplied. z. B. a hydraulic outlet or connection of the blood treatment device 100.

[0072] An additional source 201 with a substitute may be provided optionally. It may correspond to source 200 or be a separate source.

[0073] A merely indicated control or regulating device 150 of the blood treatment device 100 can be configured to control and / or regulate the treatment device before, during and after the treatment of a patient, to initiate or execute the method according to the invention.

[0074] The bottom right corner is in Fig. 1 It is roughly indicated that the valve device 700 according to the invention engages in the effluent flow of the effluent inlet line 102 and the effluent outlet line 403 and enables or prevents the flow into or out of the effluent bag 400 according to the invention. The mode of action of the valve device 700 on the effluent inlet line 102 and the effluent outlet line 403, as well as an effluent bag 400 according to the invention, are described in more detail with reference to the following figures, as are its possible, specific configuration and arrangement on the effluent bag 400 and its outlet valve 401.

[0075] In addition to the aforementioned blood pump 101, the one in Fig. 1 The arrangement shown also optionally includes a number of further, each optional, pumps, namely pump 111 for substitute, pump 121 for dialysis fluid and pump 131 for the effluent.

[0076] The pump 121 is designed to draw dialysis fluid from the source 200, for example a bag, and supply it via an optional bag heater H2 to the blood filter 303 using a dialysis fluid supply line 104.

[0077] The dialysate supplied in this way exits the blood filter 303 via a dialysate drain line 102, assisted by the pump 131, and can be discarded (see above).

[0078] An optional arterial sensor PS1 is provided for the power supply of the blood pump 101. During patient treatment, it measures the pressure in the arterial line.

[0079] Downstream of blood pump 101, but upstream of blood filter 303 and, if provided, an injection point 25 for an anticoagulant, for example heparin, a further, optional pressure sensor PS2 is provided. It measures the pressure upstream of blood filter 303 ("pre-hemofilter").

[0080] A further pressure sensor can be provided as PS4 downstream of the blood filter 303, but preferably upstream of the pump 131, in the dialysate drain line 102 to measure the filtrate pressure of the blood filter 303.

[0081] Blood leaving the blood filter 303 flows through an optional venous blood chamber 29, which may have a venting device 31 and may be in fluid communication with another pressure sensor PS3.

[0082] In the Fig. 1 In the exemplary arrangement shown, the control or regulating device 150 can be connected to any of the components mentioned herein—in any case, or in particular, to the blood pump 101—via a wired or wireless signal connection for the control or regulation of the blood treatment device 100. It is optionally configured to perform the procedure described herein.

[0083] The optional pump 111 is designed to draw substitute from the optional source 201, for example a bag, and supply it via an optional bag heater H1 to a bag in the second line 305.

[0084] Fig. 2a Figure 1 shows in simplified form a plurality of lines and the functioning of a set according to the invention, which is arranged downstream of the blood filter 303 on a blood treatment device 100 according to the invention.

[0085] The set comprises a valve device 700 according to the invention and a second fluid line 711, which can be understood as an extension of the effluent inlet line 102 (see Fig. 3 ).

[0086] The set further includes an effluent bag 400 for collecting effluent generated during blood treatment performed using the blood treatment device 100. The effluent bag has an effluent inlet opening 400a and an effluent outlet opening 400b, the effluent outlet opening 400b comprising an outlet stopcock 401 or a fluidic connection to one.

[0087] The valve device 700 is configured to be operated by means of a holding section 701 (see Fig. 5a und Fig. 5b ) to hold the outlet tap 401, preferably by positive and / or force-fit.

[0088] Furthermore, the arrangement of Fig. 2a An effluent pump, also referred to as a filtrate or dialysate pump, serves to pump effluent from a dialysis fluid chamber 303a of the blood filter 303 towards the effluent inlet opening 400a of the effluent bag 400 according to the invention. The effluent is initially collected in the effluent bag 400 and then, after treatment or at so-called bag emptying intervals, is discharged, e.g., by means of an optional additional pump 141 or by gravity, via the effluent outlet opening 400b and the effluent drain line 403 into an optional spout 600.

[0089] The example of Fig. 2a The set according to the invention is shown at a moment during which effluent is supplied to the effluent bag 400 by means of the effluent pump 131 in the effluent inlet line 102 from the dialysis fluid chamber 303a of the blood filter 303.

[0090] The outlet valve 401, which is suitable for switching between two positions, is arranged between the pump 141 and the effluent bag 400. In the position shown, it prevents any fluid flow through the effluent drain line 403. A locking element 713 within the valve assembly 700 upstream of the effluent bag 400 is in a second position, in which the second fluid line 711 is open. In the arrangement of the Fig. 2a At the moment shown, the effluent bag 400, arranged on the blood treatment device 100, is filled with effluent but not emptied, since no effluent can flow out via the closed effluent drain line 403.

[0091] The pump 141, which is arranged in the effluent drain line 403, can optionally have or consist of at least one pump drive and one pump head (not shown in the figures). It is in the position of Fig. 2a not in operation ("OFF"), as the effluent drain line 403 does not carry any effluent which could be discharged into the spout 600 by means of the pump 141.

[0092] Pump 141 can be a roller pump in any embodiment. Alternatively, it is not a roller pump in any embodiment. In some embodiments, pump 141 is an impeller pump, in others it is not.

[0093] Fig. 2b shows in simplified form the exemplary set according to the invention. Fig. 2a .

[0094] Everything about the inventive set Fig. 2a The above also applies analogously in the Fig. 2b .

[0095] The arrangement of the Fig. 2b The set according to the invention is shown at a moment during which effluent is pumped out of the effluent bag 400 by means of the pump 141 via the effluent drain line 403 and discarded, for example into an optional spout 600.

[0096] In the position shown, the outlet valve 401 allows a flow of liquid through the effluent drain line 403. A locking element 713 upstream of the effluent bag 400 is in a first position, i.e., the second

[0097] Fluid line 711 is closed, so fluid cannot flow through it over the blocking element 713.

[0098] In the Fig. 2b In the position shown, the (filled) effluent bag 400, arranged on the blood treatment device 100, is emptied by means of the pump 141 via the now open effluent drain line 403.

[0099] Pump 141 is in the position of Fig. 2b in operation ("ON"), as the effluent drain line 403 now carries effluent, which can be discarded into the spout 600 by means of the pump 141.

[0100] The present invention advantageously combines the function of the locking element 713 and the outlet valve 401. This is described in more detail in the following figures.

[0101] Fig. 3 Figure 1 shows a schematically simplified representation of an effluent bag 400 according to the invention in a first embodiment with a valve device 700 according to the invention, also in a first embodiment.

[0102] The effluent bag 400 has an effluent inlet opening 400a and an effluent outlet opening 400b. The effluent inlet opening 400a is suitable for fluidic connection to the dialysate drain line or effluent inlet line 102 using suitable connectors. The effluent outlet opening 400b is suitable for fluidic connection to the effluent drain line 403 using suitable connectors.

[0103] The effluent drain line 403 has an outlet valve 401, which is suitable for allowing or preventing a liquid flow in the effluent drain line 403. For this purpose, it has an actuating element 401c (see Fig. 5a ) which can be moved into a first position and a second position. In the first position, the flow from the effluent outlet opening 400b along the effluent drainage pipe 403 is blocked; in the second position, flow from the effluent outlet opening 400b along the effluent drainage pipe 403 and thus from the effluent bag 400 is free.

[0104] The valve device 700 according to the invention can be held on or connected to the outlet valve 401 by means of a holding section 701.

[0105] A second fluid line 711 can be inserted into an insertion section 709 of the valve device 700. The second fluid line acts as an "extension" of the effluent inlet line 102 by being able to be connected to it at a first free end 711a, while the second free end 711b of the second fluid line 711 is connected to the effluent inlet opening 400a or to a hose section provided thereon.

[0106] Furthermore, the valve device includes a locking element 713, which can be switched between a first position and a second position. In the first position, the locking element 713 prevents the flow of fluid through the second fluid line 711; in the second position, it allows the flow of fluid through the second fluid line 711.

[0107] According to the invention, the actuating element 401c and the locking element 713 are coupled or connected in such a way that the locking element 713 is forcibly moved into the second position when the actuating element 401c is moved into the first position, and that the locking element 713 is forcibly moved into the first position when the actuating element 401c is moved into the second position.

[0108] This results in two states, I and II, of the drain hose system, which can be found in the following table: Zustand Stellelement 401c Sperrelement 713 zweite Fluidleitung 711 Effluentablaufleitung 403 I 1. Stellung 2. Position offen geschlossen II 2. Stellung 1. Position geschlossen offen

[0109] Here, state I is the state in which the 400 effluent bag is filled (see also Fig. 2a ) and state II, the state in which the 400 effluent bag is emptied (see also Fig. 2b ).

[0110] The example of Fig. 3 Figure II shows the state of the valve device 700, wherein the actuating element 401c and the effluent drain line 403 within the valve device according to the invention are indicated only by dashed lines. Furthermore, the second fluid line 711 would still need to be connected to the effluent inlet line 102 and the effluent inlet opening 400a, respectively, via its ends 711a and 711b, in order to obtain a functional set according to the invention.

[0111] When a switching element 715 is actuated clockwise or counterclockwise, the valve device 700 is moved from the first state I to the second state II, or vice versa. This changes both the position of the actuating element 401c and the position of the locking element 713. Preferably, actuating the switching element 715 is a 90° rotation about its center point, by means of which both the locking element 713 and the actuating element 401c are positively guided to rotate by the same angle. During the transition between the two states I and II, it should preferably be ensured that, when the actuating element 401c moves from the first position to the second position, or when the locking element 713 moves from the second position to the first position, and vice versa, the apex of this rotation is located at a specific angle, the apex of which lies at the center point or on a longitudinal axis of the actuating element.where the locking element is located, advantageously in a certain angular range, both the second fluid line 711 and the effluent drain line 403 are interrupted, i.e., fluid cannot flow through either of the two lines 711, 403 (see . Fig. 9a und 9b This ensures that impermissible patient leakage currents can be reliably avoided.

[0112] The switching element 715 is in the Fig. 3 merely indicated by a dashed circle.

[0113] Fig. 4 shows an exemplary top view or an external view of the valve device 700 according to the invention. Fig. 3 in magnification.

[0114] The sectioned view shows the second fluid line 711, which is inserted into the valve device 700, and the effluent drain line 403, which leads through the bottom of the valve device 700 and is connected to the effluent outlet opening 400b.

[0115] Furthermore, the switching element 715 can be seen, which is rotatably arranged on the top of the valve device 700. It serves to manually switch the valve device 700 from state I to state II, as described herein, and vice versa.

[0116] Fig. 5a The figure shows a schematically simplified representation of a set according to the invention in an exemplary embodiment.

[0117] The set comprises the valve device 700 according to the invention, which in turn has a retaining section 701. The retaining section 701 in turn has a rotary latch 701a, a holder 701c and a cover 701b. The rotary latch 701a can be inserted into an opening of the holder 701c.

[0118] The set further comprises a second fluid line 711, which is received or inserted into an insert section 709 of the valve device 700 and secured against removal by the connection of the holder 701c with the rotary latch 701a. Securing against removal can be achieved by designing the holder 701c with an undercut into which the rotary latch 701a can snap radially into the holder 701c, preferably rotatably, either internally or externally. The insert section 709 with the inserted second fluid line 711 is located at the top right of the Fig. 5a The fluid line 711 is shown in cross-section, looking at the cut surface and into its lumen.

[0119] The Fig. 5a The figure shows valve assembly 700 and outlet valve 401 in an assembled state in which the second fluid line 711 is already inserted, but the retaining section 701 is not yet connected to the outlet valve 401. The outlet valve 401 is shown as a separate component on the left. Fig. 5a to recognize.

[0120] A section of the effluent drain line 403, which leads through the outlet valve 401, is clearly visible in cross-section, with a view of the cut surface and into its lumen.

[0121] At the top of the outlet valve 401 is a handle section 401a, which can function as a connecting or coupling section to the holding section 701 of the valve device 700 according to the invention. In its intended use, it serves to manually move the actuating element 401c from its first position to its second position, and vice versa.

[0122] The rotary latch 701a has a switching element 715 at its upper center, by means of which the valve device 700, which is then mounted, can be manually moved between state I and state II, and vice versa, during the treatment. For a description of these states, please refer to the preceding explanations.

[0123] The lid 701b can be opened from an open lid position (shown in Fig. 5a ) into a closed lid position (see Fig. 5b ) can be moved. In the open lid position, the outlet valve 401 can be inserted into the lid 701b. The handle section 401a of the outlet valve 401 can then be inserted into a recess of the locking element 713 or otherwise connected to the locking element 713. The locking element 713 can, in turn, be rotationally fixed to the rotary latch 701a or be integrally formed with it.

[0124] The lid 701b and holder 701c can be connected or linkable to each other by means of a hinge section and / or a snap or click system 719. The snap or click system 719, or an alternative device, can hold the lid 701b and the holder 701c in the second, closed lid position.

[0125] The outlet tap 401 is thus inserted into the cover 701b for connection with the valve device 700. When the cover 701b is closed, a lug 401b engages ( Fig. 8a ) into the locking element 713. Cover 701b and holder 701c enclose the outlet valve 401. For this purpose, the cover 701b and / or the holder 701c may have suitable recesses which, for example, can replicate the outer shape of the outlet valve 401.

[0126] Fig. 5b shows in a schematically simplified representation the set according to the invention. Fig. 5a .

[0127] The cover 701b is closed and the outlet valve 401 is received or inserted into the valve assembly 700. The example of the Fig. 5b can also be described as the assembled state.

[0128] In this example, the second fluid line 711 is completely occluded by its section-by-section radial compression when the rotary latch 701a is turned using the locking element 713.

[0129] In the closed lid position, which in the example of the Fig. 5a und 5b By way of example, the outlet valve 401 is secured by means of a tongue-and-groove connection, thus being securely held in the holder 701c and coupled to the locking element 713 in a rotational connection as described above. Other suitable devices for closing the cover 701b, such as clips or clamps, are also included in the present invention.

[0130] Other mechanical solutions for the locking element and / or couplings thereof with other components that can close the second fluid line 711 are also included in the present invention. These can be suitable for closing the second fluid line 711, for example, radially or axially, or for completely occluding it. Translational mechanisms as suitable locking elements for this purpose are also included in the present invention. Reference is further made to the description in [reference to be added]. Fig. 10 und 11 referred.

[0131] Fig. 6a shows a sectional view of a valve device 700 according to the invention in a further embodiment with an outlet tap 401 included therein in a (first) state I.

[0132] The lumen of the second fluid line 711 is continuous in the area of ​​the valve device 700, whereas the lumen of the effluent drain line 403 is closed by means of the outlet valve 401. The "blockage" of the effluent drain line 403 is not apparent from this view, as it only allows a view of the line inlets of the outlet valve 401. The blockage is shown in the Fig. 8a und 8b explained in more detail.

[0133] The effluent bag 400 (see preceding figures) could be filled in this state I.

[0134] A rotation axis R, about which the locking element 713 and the actuating element 401c can be rotated by actuating the switching element 715, which is preferably provided to be rotationally fixed, is in Fig. 6a and indicated by a dash-dot line in the following figures.

[0135] Fig. 6b shows a sectional view of the valve device 700 of the Fig. 6a with an outlet tap 401 included therein in a (second) state II.

[0136] The switching element 715 was rotated by an angle of preferably 90° and is now visible from the side.

[0137] The second fluid line is closed by means of the locking element 713, while the effluent drain line 403 has been opened by changing the position of the actuating element 401c, thus enabling (re)flow.

[0138] The blockage of the second fluid line 711 is clearly visible in this view.

[0139] The effluent bag 400 (see preceding figures) could be emptied in this state II.

[0140] Fig. 7a shows a top view of a locking element 713 of the valve device 700 according to the invention in a first state I.

[0141] The locking element 713 is in its second position. Due to the geometric design of the locking element 713, in this position it opens a second fluid line 711. This line can therefore be filled with effluent.

[0142] Fig. 7b shows a top view of the locking element 713 of the Fig. 7a in a second state II.

[0143] The blocking element 713 is in its first position. Due to the geometric design of the blocking element 713, in this position it completely occludes the second fluid line 711, i.e., any electrically conductive liquid column present in the second fluid line 711 is electrically insulated and interrupted. The second fluid line 711 can therefore not be permeated by effluent; current cannot flow over a stationary or flowing, continuous column of effluent across the occluded section of the second fluid line.

[0144] Fig. 8a is related to Fig. 7a The figure shows a top view of an actuating element 401c of an outlet valve 401, which would be inserted into the aforementioned holder 701c of the valve device 700 according to the invention. On the left, the outlet valve 401 is shown from the outside, on the right in a longitudinal section view.

[0145] The outlet tap 401 is in the first state I, i.e. the effluent drain line 403 is closed, the effluent bag 400 would be filled, effluent could not drain out of it.

[0146] In the external view on the left, a handle section 401a of the outlet valve 401 can be seen, which can serve as a connecting section to the rotary latch 701a and would necessarily rotate along with the switching element 715 when it is turned. The handle section 401a is perpendicular to a web 401b, the position of which, from outside the outlet valve 401, indicates whether the effluent drain line 403 is open or closed. In some embodiments, the web can also function as a coupling section between the outlet valve 401 and the valve assembly 700.

[0147] Alternatively or additionally, in some embodiments the handle section 401a of the outlet valve 401 can also serve as a connecting section to the locking element 713, so that it is forced to rotate with it. This can be achieved, for example, by inserting the handle section 401 into a groove on the underside of the locking element 713.

[0148] Fig. 8b is related to Fig. 7b to see and shows a top view of the actuator 401c from Fig. 8a in a second position. On the right, the outlet valve 401 is shown from the outside, on the left in a longitudinal section view.

[0149] The outlet tap 401 is in the second state II, i.e. the effluent drain line 403 is open, the effluent bag 400 would be emptied, since effluent can now drain out of it.

[0150] In the external view on the left, it can be seen that the handle section 401a is now horizontal, i.e., in a position rotated 90° to the position in Fig. 8a In conjunction with a rotary latch 701a, this rotation would have caused a positive guidance of the locking section 713, which in turn would have caused the locking of the second fluid line 711 (see Fig. 7b ).

[0151] Fig. 9a Figure 1 shows a sectional view from above of an exposed locking element 713 of the valve device 700 according to the invention in a first state I of the valve device 700. The locking element 713 is in its second position, i.e., effluent can flow through the second fluid line 711 towards the effluent inlet opening 400a.

[0152] During the rotation of the locking element 713 by actuating the switching element 715 of the valve device 700 counterclockwise in order to bring the valve device 700 into its second state II, the second fluid line 711 is blocked due to the geometric design of the locking element 713 precisely from the moment when the locking element 713 has been rotated at least by the angle α1.

[0153] Fig. 9b is related to Fig. 9a The figure shows a sectional view from above of an actuating element 401c of an outlet valve 401 in the first state I. It is comparable to state I of the Fig. 9a The actuator 401c is in its second position.

[0154] During the counterclockwise rotation of the actuating element 401c, positively guided by coupling its rotation to an actuation of the switching element 715 of the valve device 700, analogous to the description to Fig. 9a The effluent drain pipe 403 remains blocked until it has been rotated by an angle α2. Only upon further counterclockwise rotation is the effluent drain pipe 403 released, allowing effluent to flow through it towards outlet 600 (see Fig. 1 bis 2b ) flow. Therefore, the 400 effluent bag can be emptied.

[0155] How to Fig. 3 As already indicated, the valve device 700 is preferably intended to ensure that, during the transition between state I and state II, the actuating element 401c and the locking element 713 are positioned relative to each other in such a way that both the second fluid line 711 and the effluent drain line 403 are interrupted, i.e., no fluid can flow through either line 711 or 403. This is the case when the design, for example, through geometric configuration or advantageous dimensioning, ensures that the rotation required to open one line must be greater than that required to close the other. In operation, the fluid column is interrupted in state II due to the occlusion of line 711, which establishes the electrical insulation along the now interrupted fluid column.

[0156] In the present example of the Fig. 9a und 9b This is the case when α1 < α2. When the switching element 715 of the valve device 700 is in the angular range between α1 and α2, it can be ensured that no fluid can flow through either of the two lines 711 and 403. This reliably prevents impermissible patient leakage currents.

[0157] Fig. 10a shows a cross-section through a first embodiment of a locking element 713 of the valve device 700 according to the invention in its second position, i.e. with the second fluid line 711 open, through which effluent can flow in this position.

[0158] The locking element 713 will be rotated about the axis of rotation R as intended, indicated by a curved arrow about the axis of rotation R, in order to transfer the valve device 700 from a state I to a state II, i.e. to occlude the second fluid line 711.

[0159] Fig. 10b The locking element 713 shows the Fig. 10a in its first position, i.e. with the second fluid line 711 completely occluded.

[0160] The locking element 713 is geometrically designed such that, by means of a rotation of the same starting from its second position in Fig. 10a , preferably at an angle of approximately 90°, the second fluid line 711 is completely occluded by section-by-section compression, thus electrically insulating the electrically conductive liquid column in the second fluid line 711. This occurs in a radial direction with respect to the locking element 713.

[0161] Fig. 11a shows a cross-section through a second embodiment of a locking element 713 of the valve device 700 according to the invention in its second position, i.e. with the second fluid line 711 open, through which effluent can flow in this position.

[0162] Analogous to Fig. 10a The locking element 713 is then to be rotated around the axis of rotation R, indicated by a curved arrow around the axis of rotation R, in order to transfer the valve device 700 from a state I to a state II, i.e. to occlude the second fluid line 711.

[0163] Fig. 11b The locking element 713 shows the Fig. 11a in its first position, i.e. with the second fluid line 711 completely occluded.

[0164] The locking element 713 is geometric, in the example of the Fig. 11b in its lower area, designed in such a way that by means of a rotation of the same starting from its second position in Fig. 11a , preferably at an angle of approximately 90°, the second fluid line 711 is completely occluded by section-by-section compression, thus electrically insulating the interruption of the electrically conductive liquid column in the second fluid line 711. This occurs in the axial direction, relative to the locking element 713.

[0165] Fig. 12a shows an exemplary process according to the invention for preparing an effluent bag 400 (see Fig. 3 ) for collecting effluents generated during blood treatment using the following steps: S1 represents the provision of an effluent bag 400 or a set according to the invention. S2 represents connecting the second fluid line 711 to both the effluent inlet line 102 and the effluent inlet opening 400a. For this purpose, suitable connectors are provided at the free ends 711a, 711b of the second fluid line 711. S3 represents inserting a hose section of the second fluid line 711 into an insertion section 709 of the valve device 700 according to the invention, provided this has not already been done prior to the method or during the manufacture of the valve device 700. S4 represents connecting the valve device 700 to the outlet valve 401 by means of the retaining section 701.

[0166] The outlet valve 401 of the effluent bag 400 according to the invention, which was prepared by means of the method according to the invention, is connected to the valve device 700 according to the invention in such a way that when a switching element 715 of the valve device 700 is actuated, both the locking element 713 and the actuating element 401c of the outlet valve 401 are forcibly carried along (see preceding figures).

[0167] Fig. 12b shows an exemplary process of an inventive method for emptying an effluent bag 400 according to the invention.

[0168] It includes the following steps: S5 as a provision of an effluent bag 400 or a set according to the invention, in particular prepared according to the exemplary method in Fig. 12a ; and S6 as an actuation of the switching element 715 of the valve device 700 such that a fluid connection is established between the interior of the effluent bag 400 and the interior of the effluent drain line 403.

[0169] The one with the outlet tap 401, according to the Fig. 12a The method used, the connected valve device 700, preferably ensures during an upcoming blood treatment that either the second fluid line 711 or the effluent drain line 403 (see Fig. 10b ) can be flowed through by effluent. It can be switched between the states I and II described above by means of the switching element 715, i.e., it can be switched back and forth, so that exactly one or neither of the two lines is open at any given time.

[0170] The valve device 700 further ensures that either the liquid column of the second fluid line 711 is always electrically insulated due to its occlusion in state II, or the liquid column in the effluent drain line 403 is always electrically insulated by means of the closed outlet valve 401 in state I, so that neither in state I nor in state II can an electrical grounding of the patient along the effluent with the spout 600 occur.

[0171] This means that an effluent bag 400 according to the invention can either be filled via the second fluid line 711 or emptied via the effluent drain line 403, but never both at the same time. Reference symbol list

[0172] 25 Heparin injection point (optional) 29 Venous blood chamber (optional) 31 Venting device 100 Blood treatment device 101 Blood pump 102 Dialysate drain line, effluent inlet line 104 Dialysis fluid inlet line 111 Substitute pump 121 Dialysis fluid pump 131 Dialysate or effluent pump in effluent inlet line 132 Connector 141 Pump in effluent drain line 150 Control or regulating device 160Hose clamp in effluent inlet line 200Source with dialysis fluid 201Source with substitute, optional 300 Extracorporeal blood circuit 301 First line (arterial line) 302 (First) tubing clamp 303 Blood filter or dialyzer 303a Dialysis fluid chamber 303b Blood chamber 303c Semi-permeable membrane 305 Second line (venous line) 306 (Second) tubing clamp 400 Effluent bag 400a Effluent inlet 400b Effluent outlet 401 Outlet tap 401a Handle section 401b Bridge 401c Actuator 403 Effluent drain pipe 600Spout 700 Valve device 701 Retaining section 701a Rotary latch 701b Cover 701c Holder 709 Insertion section for second fluid line 711 Second fluid line 711a First free end 711b Second free end 713 Locking element 715 Switching element 717 Switching lever 719 Snap or click system H2 bag heater with bag (dialysis fluid) H1 bag heater with bag (substitute) PS1, PS2 Arterial pressure sensor (optional) PS3 Pressure sensor (optional) PS4 Pressure sensor for measuring filtrate pressure RRotation axis S1, ..., S6 Procedure steps α1 first angle α2 second angle

Claims

1. A valve device (700) intended to be connected to an outlet tap (401) associated with an effluent outlet opening (400b) of an effluent bag (400) for receiving an effluent produced during a blood treatment, the outlet tap (401) comprising an actuating element (401c) and being arranged in or on an effluent outlet line (403) or at a connection location therefor, wherein the actuating element (401c) of the outlet tap (401) can be brought into a first position, in which the flow is blocked from the effluent outlet opening (400b) along the effluent outlet line (403), and into a second position, in which the flow is allowed from the effluent outlet opening (400b) along the effluent outlet line (403) and out of the effluent bag (400), wherein the outlet tap (401) comprises a handle portion which, during the intended use, serves to manually transfer by means thereof the actuating element (401c) of the outlet tap (401) from its first position to its second position, wherein the valve device (700) comprises: - a holding portion (701) for holding the valve device (700) on or at the outlet tap (401); - an insertion portion (709) for inserting a second fluid line (711) into the valve device (700); - a locking element (713) which can be switched between at least a first and a second position; - a switching element (715) arranged for manually switching the locking element (713) from the first position to the second position, the switching element (715) being arranged such that, when the locking element (713) is manually switched from the first position to the second position, the actuating element (401c) or a connecting portion for connecting the switching element (715) to the actuating element (401c) is transferred from the second position to the first position; wherein the locking element (713) is arranged, in the first position, to act directly or indirectly on the second fluid line (711) for preventing a flow along the second fluid line (711), and, preferably for interrupting in an electrically isolating manner a column of electrically conductive liquid in the second fluid line (711) during use, and is arranged, in the second position, to allow a flow along the second fluid line (711).

2. The valve device (700) according to claim 1, further comprising a forced guidance, wherein the locking element (713) is arranged such that, when it is transferred into the second position by means of the switching element (715), the actuating element (401c) is forcibly guided into the first position by means of the forced guidance, and such that, when the locking element (713) is transferred into the first position by means of the switching element (715), the actuating element (401c) is forcibly guided into the second position.

3. The valve device (700) according to claim 2, wherein when the actuating element (401c) is transferred into the second position, the locking element (713) is arranged to assume or maintain an already force-guided position, in which the flow along the second fluid line (711) is or remains prevented, and in which, in use, a column of electrically conductive liquid in the second fluid line (711) is preferably interrupted in an electrically insulating manner before the actuating element (401c) assumes the second position.

4. The valve device (700) according to any one of the preceding claims, wherein the holding portion (701) comprises a rotary latch (701a) with a cap (701b), or consists thereof, the cap (701b) being movable between a first open cap position for inserting or removing the outlet tap (401) from the holding portion (701) or the rotary latch (701a), and a second cap position for holding the outlet tap (401) in the holding portion (701) by force and / or form complementarity.

5. The valve device (700) according to any one of the preceding claims, wherein the holding portion (701) comprises a rotary latch (701a) for receiving the outlet tap (401) or a section thereof and a cap (701b), the rotary latch (701a) and / or cap (701b) being designed with a snap or click system (719) for their common or mutual connection and / or for at least partially closing the rotary latch (701a) by means of the cap (701b).

6. The valve device (700) according to any one of the preceding claims, wherein the second fluid line (711) or a portion thereof is inserted into the insertion portion (709), and / or wherein the outlet tap (401) or a portion thereof is inserted into the holding portion (701), or wherein the holding portion (701) is connected to the outlet tap (401).

7. The valve device (700) according to claim 6, wherein the second fluid line (711) comprises a first free end (711a) for connecting it to an effluent inlet line (102) and a second free end (711b) for connecting it to an effluent inlet opening (400a) of an effluent bag (400) or a fluid line connected thereto.

8. The valve device (700) according to any one of the preceding claims, wherein the locking element (713) is arranged to be transferred, upon rotation thereof by a first angle (α1), between a second position in which the second fluid line (711) is maximally allowed by the locking element (713), and a first position in which the second fluid line (711) is maximally closed by the locking element (713), wherein the actuating element (401c) is arranged to be transferred, upon rotation thereof by a second angle (α2), between a first position in which the effluent outlet line (403) is maximally closed by the actuating element (401c), into a second position in which flow is permitted for the first time in the effluent outlet line (403) by the actuating element (401c), wherein the first angle (α1) is smaller than the second angle (α2).

9. An effluent bag (400) for collecting an effluent generated during a blood treatment, comprising: - an effluent inlet opening (400a); - an effluent outlet opening (400b); - an outlet tap (401) connected to the effluent outlet opening (400b), the outlet tap (401) comprising an actuating element (401c) and being arranged in or on an effluent outlet line (403), wherein the actuating element (401c) can be brought into a first position of the outlet tap (401), in which the flow from the effluent outlet opening (400b) along the effluent outlet line (403) is blocked, and into a second position in which the flow from the effluent outlet opening (400b) along the effluent outlet line (403) and out of the effluent bag (400) is permitted; and - one valve device (700) according to any one of the preceding claims.

10. A set with a valve device (700) according to any one of the claims 1 to 8 as well as a second fluid line (711) for insertion into the insertion portion (709) of the valve device (700).

11. The set according to claim 10, further comprising an effluent bag (400) for collecting an effluent generated during a blood treatment, which comprises an effluent inlet opening (400a) and an effluent outlet opening (400b) as well as an outlet tap (401) for closing the effluent outlet opening (400b) or an attachment therefor, wherein the valve device (700) is configured to hold the outlet tap (401) by means of its holding portion (701).

12. A method for preparing an effluent bag (400) for collecting an effluent generated during a blood treatment, comprising the steps of: - providing a set according to any one of claims 10 or 11 (step S1); - connecting the second fluid line (711) to both the effluent inlet line (102) and the effluent inlet opening (400a) by means of suitable connectors at their free ends (711a, 711b) (step S2); - inserting the second fluid line (711) into the insertion portion (709) of the valve device (700), if not already done (step S3); - connecting the valve device (700) to the outlet tap (401) by means of the holding portion (701) (step S4).

13. A method for emptying an effluent bag (400), comprising the steps of: - providing a set according to any one of claims 10 to 11, in particular prepared according to the method of claim 12 (step S5); - actuating the switching element (715) of the valve device (700) such that a fluid connection is established between the interior of the effluent bag (400) and the interior of the effluent outlet line (403) (step S6).

14. A blood treatment apparatus (100), connected to an effluent bag (400) according to claim 9 or to a set according to any one of the claims 10 to 11.

15. The blood treatment apparatus according to claim 14, designed as a hemodialysis apparatus, hemofiltration apparatus or hemodiafiltration apparatus, in particular as an apparatus for acute and chronic renal replacement therapy or for continuous renal replacement therapy (CRRT).