DE102010032181A1 - Coupling device, connector, medical device function, medical treatment device and method - Google Patents

Abstract

The present invention relates to a coupling device (100) for establishing at least two fluid connections between fluid guides of a functional device (1000) on the one hand and a treatment device (2000) on the other hand, the coupling device (100) having at least one inner tube section (1) with a first lumen (3). , provided for receiving and / or guiding at least one first medical fluid; and an outer tube section (5) with a second lumen (7), the outer tube section (5) being arranged at least around a region (9) of the inner tube section (1) in such a way that a space (11) within the second lumen (7) is configured between the exterior of the inner pipe section (1) and the outer pipe section (5), the space (11) being provided for receiving and / or guiding at least one second medical fluid. It also relates to a connector, a functional device, a treatment device, a method, a control device, a digital storage medium, a computer program product and a computer program.

Description

The present invention relates to a coupling device according to claim 1. It further relates to a connector according to claim 14, a medical device according to claim 15, a medical treatment device according to claim 16, a method according to claim 17, a control device according to claim 23, a digital storage medium according to claim 24, a computer program product according to claim 25 and a computer program according to claim 26.

Fluid connections or fluid-permeable connections between fluid-carrying devices (also referred to as fluid guides), by means of which fluid is exchanged between a medical-technical functional device and a medical-technical treatment device, are known from practice.

An object of the present invention is to propose a coupling device for producing at least two fluid connections between a medical-technical functional device and a medical-technical treatment device. Furthermore, a suitable method for connecting a medical-technical functional device to a medical-technical treatment device and / or for priming and / or rinsing the medical-technical functional device should be specified.

This object is achieved by a coupling device with the features of claim 1. It is further characterized by a connector according to claim 14, a medical device according to claim 15, a medical treatment device according to claim 16, a method according to claim 17, a control device according to claim 23, a digital storage medium according to claim 24, a computer program product according to Claim 25 and a computer program according to claim 26 solved.

All achievable with the coupling device according to the invention advantages can be undiminished with the connector and / or the medical device function and / or the medical treatment device and / or the method and / or the control device and / or the digital storage medium and / or the computer program Product and / or the computer program.

According to the invention, a coupling device is proposed, which is suitable and provided for producing at least two fluid connections between fluid guides of a medical functional device (hereinafter also referred to as functional device) on the one hand and a medical treatment device (also referred to below as a treatment device) on the other hand.

The coupling device according to the invention has at least one inner tube section with a first lumen.

The first lumen is provided for receiving and / or guiding at least one first medical fluid.

Furthermore, the coupling device according to the invention has at least one outer tube section with a second lumen.

The outer pipe section is arranged at least around a portion of the inner pipe section such that a space within the second lumen is configured between an exterior of the inner pipe section and an interior of the outer pipe section. This space is provided for receiving and / or guiding at least one second medical fluid.

The connector according to the invention is provided for its connection to at least one coupling device according to the present invention. Its connection to the coupling device serves to produce two fluid connections between medical-technical functional device or functional device and medical-technical treatment device or treatment device. He interacts with the coupling device for this purpose.

The medical-technical functional device according to the invention (or in short: functional device) and the medical-technical treatment device (or short: treatment device) are each intended for connection to or connected to at least one coupling device according to the present invention and / or with a connector according to the invention.

The method according to the invention serves for connecting a medical-technical functional device to a medical-technical treatment device and / or flushing or priming the medical-technical functional device according to the invention and comprises using a coupling device according to the present invention.

Advantageous developments of the present invention are the subject of the dependent claims.

Embodiments of the invention may have some or all of the following features in any combination.

The term "fluid communication" as used herein, in certain embodiments of the present invention, refers to a compound that is responsible for guiding and / or transferring and the like of fluids between two fluid carrying systems, e.g. B. Function device as a first system and treatment device as a second system, is used.

The term "fluid guide" as used herein, in certain embodiments of the present invention, refers to a physical arrangement of elements provided for receiving and / or conducting, guiding, and the like of fluids. Examples include hoses, pipes, ducts, pipes, chambers, fluid handling equipment, etc.

The coupling device according to the invention is arranged in certain embodiments of the present invention on the part of the functional device, in particular connected to this or part thereof. In other embodiments, it is disposed on the side of the treatment device, in particular connected thereto or part thereof.

Accordingly, in certain embodiments, the connector can thus be arranged on the side of the functional device or on the side of the treatment device.

The coupling device may be temporarily or permanently connected to the functional device.

The coupling device according to the invention can be positively and / or positively and / or materially connected to the functional device.

In some embodiments of the present invention, the docking device is made integral with the functional device.

In some embodiments of the present invention, the coupling device with the functional device after its manufacture connectable, such as attached and / or attachable, attached and / or screwed, clipped or attached in any other way releasably attached.

In certain embodiments of the present invention, the functional device can be retrofitted or upgraded with the coupling device according to the invention.

All embodiments described for the connection of the coupling device according to the invention with the treatment device and / or the functional device apply analogously to the connection of the connector to the treatment device or the functional device.

The term "pipe section", in particular as used herein in relation to the terms "inner pipe section" and "outer pipe section", in certain embodiments of the present invention designates a tubular portion of a suitable and / or laid-out arrangement for fluid guidance, i. H. the invention.

The dimensions and / or shapes of a pipe section in general are not limited according to the invention. On the contrary, according to the invention, all configurations suitable for establishing a fluid connection between the functional device and the treatment device come into consideration. Therefore, the pipe section cross sections - relative to a cross section each perpendicular to a Flow direction of the pipe section - in the form of circles, rectangles, squares, ovals or ellipses, triangles, polygons and the like.

The term "cross section" can here generally be understood as a cross section perpendicular to the flow direction of the pipe sections; while a cut made parallel to the direction of flow is generally referred to as a longitudinal section.

The inner pipe section and / or the outer pipe section may have - in sections or completely - a straight elongated shape or a curved or curved shape.

The inner tube section is configured symmetrically overall in certain embodiments of the present invention. In other embodiments, the inner pipe section is configured in sections or as a whole asymmetrically.

The same applies to the design of the outer pipe section.

The inner tube section and the outer tube section may have mutually different cross-sectional profiles in the area of the coupling device.

In some embodiments of the present invention, the inner tube section and the outer tube section have a substantially or completely circular cross-section.

The inner tube section and / or outer tube section are fixedly arranged in or within the coupling device in certain embodiments of the present invention. In some embodiments of the present invention, the outer pipe section is fixedly arranged relative to the inner pipe section within the coupling device.

In certain embodiments, the inner tube portion or a portion thereof and the outer tube portion or a portion thereof are made integral with each other.

All statements made herein to a pipe section, z. As to the inner tube and / or outer tube section, meet in certain embodiments to the respectively provided for connection to the connector end of the pipe section, as free ("free" is here in a number of embodiments synonymous with "freestanding" to understand) end designated, too.

The term "lumen" as used herein in certain embodiments of the present invention refers to the interior or interior volume of a pipe section, particularly the fluid-carrying interior of the pipe section. The term "area" in certain embodiments of the present invention refers to that section and or part or portion of the outer pipe section disposed around the inner pipe section.

The term "space" as used herein, in certain embodiments of the present invention, designates an open volume between an exterior of the inner tubing section and the outer tubing section and / or an interior of the outer tubing section to at least one side or at least two sides.

The space is, in certain embodiments of the present invention, that portion of the second lumen of the outer tube portion that remains after subtracting or hiding the first lumen of the inner tube portion from the second lumen of the outer tube portion.

The cross-sectional shape of the space between the outer pipe section and the exterior of the inner pipe section may depend on the specific design of the cross-sections of the outer pipe section and the inner pipe section.

In further embodiments, the cross-sectional shape of the space may depend on the particular arrangement of the inner pipe section in the interior of the outer pipe section.

In certain embodiments of the present invention, the region or free pipe end of the inner pipe section is coaxially or concentrically disposed in the outer pipe section.

The term "coaxial", as used herein, means in certain embodiments of the present invention that a longitudinal axis, in particular a center axis, of the outer pipe section - with respect to an axis parallel to the flow direction of the outer pipe section - parallel to a longitudinal axis, in particular a center axis, of the inner pipe section - with respect to an axis parallel to the flow direction of the inner pipe section - is arranged.

In a concentric arrangement, the respective center axes of the inner pipe section and the outer pipe section may coincide, so that there is a symmetrical arrangement of the inner pipe section in or relative to the outer pipe section.

A concentric arrangement of the inner tube portion in the outer tube portion may be advantageous in certain embodiments of the present invention, as it may provide a simpler requirement for tolerances than other arrangements, such as a side-by-side or one-above arrangement.

The term "flow direction" in certain embodiments of the present invention refers to a direction in which a fluid flows through a pipe section of the coupling device.

The direction of flow may be the direction in which it is provided that the fluids should or will flow through the coupling device in the intended use of the subject of the invention.

In this case, in certain embodiments of the present invention, a flow direction of the inner pipe section may be different from a flow direction of the outer pipe section.

In other embodiments of the present invention, the flow direction of the inner pipe section and the flow direction of the outer pipe section are substantially or completely the same or identical.

The flow direction of the inner tube section is, in certain embodiments, a main direction in which the first medical fluid flows toward or into the functional device.

The flow direction of the outer tube section is, in certain embodiments, a main direction in which the second medical fluid flows away from and away from the functional device.

The term "main direction" as used herein, in certain embodiments of the present invention, refers to the flow direction of the major portion or of the entire, respectively flowing, medical fluid.

In certain embodiments of the present invention, the first medical fluid and the second medical fluid each flow exclusively in a single direction ("one-way street"). In certain embodiments, the flow direction of the first fluid is exactly opposite to the flow direction of the second fluid.

The term "free pipe end", as used herein, denotes in certain embodiments of the present invention located in the coupling device according to the invention or in a region of the coupling device according to the invention freestanding pipe end of the inner pipe section or the outer pipe section. The free pipe end is needed to connect to the connector and / or gets in contact with it.

The term "medical fluid" as used herein, in certain embodiments of the present invention, generally refers to fluids for performing extracorporeal blood treatment, such as blood, dialysate, substituate fluid, drug solutions, priming and / or rinsing and / or sterilizing fluids, and the like , Gases, such as air, as well as combinations or mixtures thereof.

In certain embodiments of the present invention, a rinse solution, such as a substituate liquid, e.g. As a saline solution and the like to understand. In such embodiments, the rinsing liquid can be used in particular for rinsing and / or priming the functional device.

In certain embodiments of the present invention, the rinse liquid is a rinse liquid prepared online by the treatment device, for example, a substituate liquid prepared online.

In certain embodiments of the present invention, the substituate liquid (of its nature, quality, and the like) may be used equally for rinsing and / or priming the functional device prior to medical treatment as well as a treatment fluid during medical treatment, and is provided for each.

The "first medical fluid" and the "second medical fluid" may be the same type of fluid. The second medical fluid may be identical to the first medical fluid. It can be one and the same fluid which flows through the inner pipe section as well as through the outer pipe section with a time lag. However, the second medical fluid may also be a different fluid than the first medical fluid.

In embodiments in which the first medical fluid and the second medical fluid are of the same type, the first medical fluid may be a medical fluid, for example a fresh irrigation fluid, freshly introduced into the functional device. The second medical fluid may be a used or used irrigation fluid. Conversely, this is also provided.

In certain embodiments of the present invention, the first lumen and the second lumen are fluid-tightly separated from one another in the region of the coupling device in at least one first position of the coupling device. In at least one other position of the coupling device, however, the first lumen and the second lumen in the region of the coupling device are in fluid communication with each other or with each other.

In certain embodiments of the present invention, in the region of the coupling device, a free tube end of the inner tube section is set back relative to a free tube end of the outer tube section.

In certain other embodiments, the reverse is true, i. H. a free pipe end of the outer pipe section is set back from a free pipe end of the inner pipe section.

The recessed positioning of one free pipe end to the other free pipe end may refer to a position of the free pipe end of the inner pipe section and a position of the free pipe end of the outer pipe section relative to a perpendicular to the direction of coupling between functional device and treatment device level.

The term "reset" as used herein means in certain embodiments that the recessed free tube end, e.g. B. the inner tube section, a greater distance to a Ankoppelebende the coupling device to the treatment device or to a portion thereof - or in other embodiments of the invention to the functional device - than the other free pipe end, z. B. the outer tube section, which is not reset.

The term "coupling plane", as used herein in some embodiments of the present invention, refers to that level in which the coupling of the functional device takes place to the treatment device, whether this is a flat surface, ie a plane in the mathematical sense, or Not.

In certain embodiments of the present invention, the coupling device according to the invention is provided for connection to a connector of the treatment device or the functional device.

The connector may be a portion or an element of the corresponding device. Analogously to what has been said above with regard to the coupling device, the connector can be connected or connected fixedly or detachably to the treatment device or the functional device.

The connector may be a connector as described in the applicant's application filed with the German Patent and Trademark Office on the same day as the present application entitled "Connector, medical-technical treatment device, medical-technical functional device and method "is disclosed, the disclosure of which is hereby incorporated by reference in its entirety.

In certain embodiments of the present invention, the connector has a two-lobed end portion for connection to the docking device.

The bilumen end portion may, in certain embodiments, be provided for separately guiding the first and second medical fluids within a portion of the connector.

In certain embodiments, the connector again has at least one inner tube section and at least one outer tube section.

In such embodiments, it may be provided to connect or contact or touch an inner pipe section of the connector to the inner pipe section of the coupling device according to the invention and / or to connect or contact or contact an outer pipe section of the connector with the outer pipe section of the coupling device according to the invention.

In certain embodiments of the present invention, the connector may be designed such that in the region of the coupling between the connector and the coupling device, an outer tube section of the connector is set back relative to an inner tube section of the connector - or vice versa. This is especially true for embodiments in which the coupling device according to the invention has a staggered positioning of the pipe sections.

In certain embodiments of the connector according to the invention, the connector can be closed by a closure device, such as a closure cap. In such embodiments, the connector according to the invention can advantageously be easily and / or hygienically safely cleaned and rinsed.

In certain embodiments of the present invention, the coupling device according to the invention has a first closure device.

The first closure device is configured as a closure sleeve in certain embodiments of the present invention. However, the first closure device is not limited to such a configuration.

The first closure device is used in certain embodiments according to the invention for closing a designated in the following as the first departure outlet of the outer tube section through which the second fluid can leave the outer tube section or the second lumen and should leave in certain situations.

The first outlet of the outer tube section may be a portion or a drain line in certain embodiments of the present invention.

The first outlet is in some embodiments of the invention substantially perpendicular to the coupling direction of the lumen of the outer tube section.

The space of the outer pipe section may be in fluid communication with the first outlet in certain positions of the coupling device.

In certain embodiments of the present invention, the first closure device is axially displaceable with respect to a longitudinal axis of the connector or with respect to a longitudinal axis of the outer tube section in the direction of the coupling between the functional device and the treatment device for closing the first outlet of the outer tube section.

In certain further embodiments, the coupling device according to the invention has a second closure device.

The second closure device may be designed as a closure sleeve, but is not limited to such a configuration - as the first closure device.

In certain embodiments according to the invention, the second closure device serves to close off an outflow, referred to below as a second outlet, through which the first fluid can leave the inner tube section or the first lumen and leave it in certain situations.

The first closure device and / or the second closure device may be annular or hollow-cylindrical configured elements. Regardless of their specific shape and / or configuration, they can be configured to have sufficient spring and / or clamping action to automatically remain securely in their respective functional positions (open or closed).

The second outlet of the inner tube section, in certain embodiments of the present invention, may comprise a portion of a supply line and / or substituate line for a fresh rinse fluid, e.g. B. in the context of extracorporeal blood treatment, be.

In certain embodiments of the present invention, in addition to the second closure device, at least one check valve is provided in or on a section of the inner pipe section or a pipe of the second outlet of the coupling device according to the invention.

In some embodiments, the second closure device is optional. In these embodiments, at most a check valve is provided in or on the inner pipe section or a pipe of the second outlet; a second closure device is dispensed with in such embodiments.

In certain embodiments of the present invention, the second closure device is displaceable axially, relative to a longitudinal axis of the connector or a longitudinal axis of the coupling device, in the direction of the coupling between functional device and treatment device, for closing the second outlet of the inner tube section.

As used herein, the term "direction of coupling" refers, in certain embodiments of the present invention, to the direction in which the connector is moved to couple the functional device to the treatment device. An exemplary embodiment of a coupling is shown in the figures, wherein the dashed arrow in FIG 2A and 7A each illustrates the direction A of the coupling.

The displacement of the first closure device and / or the second closure device can take place by means of suitable devices, which may be provided specially for this purpose. The shift can be automatic or automated.

In certain embodiments of the present invention, it is provided to displace the first closure device and / or the second closure device by means of the connector or a portion thereof.

The displacement of the first closure device and / or the second closure device by means of the connector or a part or portion thereof is achieved in certain embodiments of the present invention by moving a pipe section of the connector towards the coupling device, ie in the direction of the coupling.

In certain embodiments of the present invention, the first closure device and / or the second closure device are configured and / or provided to be taken along in the direction of the coupling between the functional device and the treatment device, depending on the extent of the displacement or the distance of the connector.

For this purpose, devices of the connector for carrying the first and / or the second closure device of the coupling device may preferably be provided.

Suitable "means of the connector for carrying the first and / or second closure means" include appendages or projections, edges, shoulders, cams, beads, hooks, pins and the like protruding from the connector, but are not limited to the examples mentioned ,

Specially designed means or entrainment to take away the second closure means are not required in some embodiments of the present invention. Rather, you can be provided other structural measures for moving the second closure means for the purpose of closing the second closure means such. B. mechanical positive couplings, which automatically lead to the closing of the first closure device when closing the first closure device.

In certain embodiments of the present invention, the second closure device can also be closed by z. B. a front end of the connector, which entrains the second closure device during its advancement in the direction of coupling and hereby closes the second outlet.

In certain embodiments of the present invention, the first and / or the second closure device are designed to be irreversibly displaceable by means of the connector or a portion thereof to the corresponding free tube end of the inner tube section or of the outer tube section in the region of the coupling device.

Corresponding mechanical and / or electrical and / or magnetic devices can be provided.

An "irreversible" displacement of the first and / or second closure means in certain embodiments of the present invention means that the closure means, after having reached their target or closed position, can not be pushed back by normal operation and / or accidentally.

In some embodiments of the present invention, an "irreversible" displacement of the first and / or the second closure device means that the closure devices, after having reached their target or closed position, are returned to an open position only by means of pressure or force from the closure position can be, which is above a pressure or a force which act in conventional use of the coupling device in each case on the closed closure devices against a closure direction. This common pressure or force can result from the effect of fluid loading on the closed closure devices.

In some embodiments, devices provide that pushing back out of the closed position is only possible in a destructive manner, for example, using special force or force. Examples of such devices are snaps.

The displacement of the closure devices results in certain embodiments of the present invention in a closure of the corresponding pipe section in the region of the coupling device. In such embodiments, the respective lumen of the corresponding pipe section may be closed and / or sealed to an exterior.

In certain further embodiments of the present invention, a displacement path of the first closure device and / or the second closure device of the coupling device is determined by a corresponding penetration depth of the connector or a portion thereof into the coupling device and / or the functional device.

The term "penetration depth" as used herein in certain embodiments of the present invention means an amount of penetration of the connector or portion thereof into the docking device and / or the functional device, i. H. a (forward) positioning of the connector or a portion or part thereof in the longitudinal direction of the coupling device of the present invention.

The displacement of the connector is used in certain embodiments of the present invention, in particular for moving the locking devices of the coupling device, so as to close a respective outlet of the corresponding pipe section.

By closing off a drain or also a closure device, by which it can be meant, for the purposes of the present invention, it can also be understood that if, for example, the second outlet is closed by blocking by the second closure device at the location of its branching from the first lumen The first outlet not analogous - at the point of its branching from the second lumen of the outer tube section - must be closed by the first closure device, but the first outlet fluidly rather can be closed by that due to the Position of the first closure device between the inner tube section and outer tube section, a flow of fluid, which coming from the interior of the functional device coming from this through the first departure to an exterior through the coupling device through is prevented thereto. The first outlet is thus also closed by the second closure device.

In certain embodiments of the present invention, the inner tube portion is provided and configured as a fresh medical fluid supply line and the outer tube portion is provided as a drainage conduit for a used and / or discarded medical fluid. In other embodiments of the present invention, the reverse is the case.

The inner pipe section can be configured and / or provided as an infusion line and / or a seat belt. The outer pipe section can be configured and / or provided as a drain line and / or flushing line. The outer tube portion may, in such embodiments, facilitate the removal or removal of substituate liquid, e.g. B. in the context of extracorporeal blood treatment, serve from the functional device.

In some embodiments of the present invention, the functional device according to the invention can be produced integrally with at least one coupling device according to the invention. However, in other embodiments of the present invention, it can also be retrofitted or upgraded with (at least) a coupling device according to the invention or retrofitted or retrofitted.

Non-limiting examples of functional devices within the meaning of the present invention include a blood cassette, a blood tubing set, and the like. The functional device can be provided as an extracorporeal blood circulation or have such.

In certain embodiments of the present invention, the functional device is designed as, or part of, a blood cassette, or comprises such. Such a blood cassette can, for example, as a casting or injection molded part, for. B. plastic, be configured. It may independently be designed as disposable or disposable.

Examples of suitable blood cassettes include those in the application DE 10 2009 024 664.6 , which was filed on 23 April 2009 with the German Patent and Trademark Office, as well as in the application DE 10 2009 024 468.9 , filed on 10 June 2009 with the German Patent and Trademark Office, each filed by the assignee of the present application, each of which is entitled "External Functional Device, Blood Treatment Device for Accommodating an External Functional Device of the Invention, and Methods" Embodiments include, but are not limited to. The embodiments disclosed in the indicated applications are also the subject of the present application by reference.

In certain embodiments, the treatment device according to the invention is designed as an extracorporeal treatment device, in particular as an extracorporeal blood treatment device, for example as a dialysis device, in particular as a hemodialysis device, hemofiltration device, hemodiafiltration device, or as a device for adsorption, liver replacement therapy, apheresis, transfusion, etc.

Their use for treatment purposes, however, is not limited to the uses exemplified.

Rather, the coupling device according to the invention can be used for fluid communication for any functional devices and treatment systems in which a - at least - double fluid management desired and / or required.

The object of the present invention is further achieved by a method according to claim 17. The method according to the invention serves to connect a functional device to a treatment device and / or to prime the functional device. It comprises the use of a coupling device according to the invention.

For connecting the functional device to the treatment device, the coupling device according to the invention can be connected to a connector.

The connector may be a machine-side substituate port.

Suitable examples of one embodiment of such a substituate port include, but are not limited to, those in the application DE 10 2009 024 575.8 the present applicant with the title "connection device and method for connecting at least two fluid-carrying medical systems, and medical device" filed June 10, 2009, the German Patent and Trademark Office, described embodiments, the disclosure of which is hereby incorporated by reference becomes.

The functional device can be connected to the treatment device by connecting the inner tube section of the coupling device according to the invention to an inner tube section of the connector according to the invention.

By axial movement of the connector relative to the coupling device or the functional device into a rinsing position, the inner tube section of the connector can dip into the inner tube section of the coupling device or vice versa. In this way, a first fluid connection between the functional device and the treatment device-preferably fluid-tight in the region of the connection with respect to an exterior of the inner tube sections-can be produced.

The outer tube portion of the coupling device according to the invention is - preferably simultaneously connected to the connection of the inner tube sections with each other - with an outer tube portion of the connector according to the invention. In this case, a free tube end of the outer tube section of the connector can enclose the free end of the outer tube section of the coupling device. This can be achieved, for example, by pushing the outer pipe section of the connector sufficiently far above or into the outer pipe section of the coupling device. In this way, a second fluid connection between the functional device and the treatment device-which in the region of the connection is advantageously fluid-tight with respect to an exterior and an interior of the outer tube sections-can be produced.

In such a flushing position, both closure devices (the first closure device of the outer tube section and the second closure device of the inner tube section of the coupling device) can be opened. In such embodiments, a fluid passage through the inner tube portion and the outer tube portion of the coupling device may be substantially or completely unrestricted. The functional device can be simultaneously supplied with (a first) fluid and removed from this (a second) fluid. This position can be referred to as a flushing position.

In such a position, steam sterilization can be performed reliably.

In certain embodiments of the present invention, the inventive method is used for priming and / or rinsing an extracorporeal blood circulation.

In such an embodiment, an arterial line section and a venous line section of the extracorporeal blood circuit may be shorted. Suitable means for shorting or connecting the arterial and venous line sections are well known. In certain embodiments, advantageously, a structurally less expensive straight connector can be used for short-circuiting the arterial to the venous line section.

The method comprises, in certain embodiments, the introduction of priming and / or rinsing liquid, in particular of fresh priming and / or rinsing liquid, for. B. a Substituatflüssigkeit, in the first lumen of the inner tube section, the guiding and / or guiding the priming and / or rinsing fluid in an interior of the extracorporeal blood circulation and the discharge of used priming and / or rinsing fluid through the second lumen of the outer tube section. The derived fluid may be received in a fluid port of the treatment device.

The fresh priming and / or rinsing liquid introduced into the first lumen of the inner tube section may be a priming and / or rinsing liquid prepared on-line by the treatment device. In particular, a substituate liquid can be introduced into the first lumen-at a time after rinsing or priming-which can also be used as part of a medical treatment.

The priming and / or rinsing liquid may in other embodiments be an already prepared and / or ready-present priming and / or rinsing liquid.

The priming and / or rinsing liquid introduced into the first lumen of the inner pipe section can be conveyed from the inner pipe section of the coupling device into the second outlet of the inner pipe section of the coupling device, e.g. B. a substituate line, flow. From there, the priming and / or rinsing fluid in some embodiments flows into the extracorporeal blood circulation.

The substituate line may, in certain embodiments, be part of the arterial line section of an extracorporeal blood circuit.

From the arterial line section, the priming and / or rinsing fluid can flow into a treatment device, such as a blood filter for purifying patient blood in the course of hemodialysis and / or haemofiltration treatment and / or hemodiafiltration treatment.

After flowing through the blood side of the treatment device, the priming and / or rinsing fluid can flow through the venous line section of the extracorporeal blood circulation and through the first outlet of the outer tube section, for. B. the drain line, out of the coupling device and back to the treatment device flow.

The drain line may in certain embodiments be part of the venous line section.

The priming and / or rinsing liquid used after the priming and / or rinsing process can be returned to the treatment device and / or pumped. It may be provided for reprocessing (in the treatment device) and / or - via a derivative - discarded.

In certain embodiments of the present invention, the passage of the coupling device is just reversed, i. H. the first medical fluid is introduced into the second lumen of the outer tube section and discharged or discharged via the first lumen of the inner tube section.

In certain embodiments of the method according to the invention, it is provided to displace the first closure device of the outer tube section of the coupling device, in particular after performing the priming and / or rinsing process, for closing the first outlet of the outer tube section.

For this purpose, it may be provided in some embodiments according to the invention to advance the connector in the direction of the functional device or generally in the direction of the coupling until the first closure device - in certain embodiments by means of the means for carrying the first and / or the second closure device of the connector - axially so far is shifted, that the space between inner tube section and outer tube section is sealed by the first closure device.

A position of the functional device in which the first outlet of the outer tube section is closed by means of the first closure device is referred to herein as operating position or treatment position.

In the operating position, no fluid can enter into the environment or into the connector via the closed first outlet of the outer tube section and thus be lost.

In certain embodiments of the method according to the invention, it is provided to displace the second closure device of the inner tube section of the coupling device, in particular after performing the treatment performed by means of the functional device and / or the treatment device for closing the second outlet of the inner tube section. This is done in some embodiments axially and in the direction of coupling.

The presence of the second closure device is optional, since a leakage of liquid can also be accomplished by a - alternatively or additionally existing - preferably stuck - check valve in the second outlet.

If both locking devices of the coupling device are displaced for closing the first outlet and the second outlet, the coupling device is in a position designated here as the closed position.

In the closed position, the closed second outlet of the inner tube section can also be sealed in a fluid-tight manner against an exterior. It can also be advantageously prevented leakage of fluid from the second outlet into the space between outer tube section and inner tube section of the coupling direction and / or in the environment.

This can be advantageous in order to reduce or eliminate contamination of the environment with treatment and / or rinsing liquid. The hygiene and safety for all parties can thus be increased advantageously. Thus, for example, the functional device designed as an external single-use blood cassette can advantageously be removed from the treatment device so as to be drip-proof. The two closure devices remain advantageous at the pipe sections for closing the outlets.

In certain embodiments of the present invention, the displacement of the first closure device and the second closure device occur simultaneously.

As used herein, the term "contemporaneously" means that the first closure means and the second closure means are contemporaneously, i. H. in one operation, by an operation, an action and the like of the connector in the direction of coupling or by another, mechanically coupled operation, be moved.

In certain other embodiments of the present invention, the displacement of the first closure device and the second closure device is delayed and / or independent of one another. Which finish is closed first can be determined and carried out depending on the application.

All, some or some steps of the method according to the invention can be carried out automatically and / or automatically.

The object of the invention is further achieved by a control device according to the invention according to claim 23.

The control device according to the invention is provided and configured for automated execution of at least one of the steps of the method according to the invention.

The control device according to the invention is in particular provided for use with a treatment device of the present invention.

The object of the invention is further achieved by a digital storage medium according to claim 24 - in certain embodiments in conjunction with appropriate, suitable and / or dedicated hardware - a computer program product according to claim 25 and a computer program according to claim 26.

The digital storage medium, which is in particular a floppy disk, a CD or a DVD, a USB stick, a flashcard, an SD card, etc., preferably has electrically readable control signals that can interact with a programmable computer system such that the machine Steps of the method according to the invention can be initiated.

In this case, all, some or some of the machine-carried out steps of the inventive method can be initiated. The latter also applies to the computer program product and the computer program.

The computer program product preferably has a program code stored on a machine-readable carrier for initiating the mechanically feasible steps of the inventive method when the program product runs on a computer.

The term "machine-readable carrier" as used herein, in certain embodiments of the present invention, refers to a carrier that contains data or information interpretable by software and / or hardware. The carrier may be a data carrier such as a floppy disk, a CD, DVD, a USB stick, a flashcard, an SD card and the like.

The computer program has a program code for initiating the mechanically feasible steps of the method according to the invention, when the program runs on a computer or computer.

All achievable with the coupling device according to the invention advantages can be undiminished achieve with the control device according to the invention and / or the digital storage medium according to the invention and / or the computer program product and / or the computer program according to the invention.

Certain embodiments of the invention have one or more of the advantages mentioned below.

The present invention provides a coupling device for double fluid guidance between a functional device and a treatment device in a common component or in only a single arrangement.

This allows advantageous in certain embodiments, a simultaneous and common connection z. B. a Substituatanschlusses and a flushing connection. In such embodiments, it is advantageously possible to dispense with at least one otherwise required additional component on the functional device and / or the treatment device. This is associated with cost and effort savings.

By means of the coupling device according to the invention, it is advantageously possible in certain embodiments to advantageously reduce the design effort that would otherwise be required to achieve a fluid connection between a functional device and a treatment device.

In addition, it may be advantageously possible in certain embodiments to achieve a cost-effective and / or compact design.

In certain embodiments of the present invention, the handling of the functional device can advantageously be improved or more secure when upgrading the treatment device, since there are fewer contamination-prone contact surfaces because fewer connections have to be connected manually.

Overall, it can be advantageously possible by means of the coupling device according to the invention to achieve improved hygiene.

In certain embodiments, it is advantageous to dispense with a machine-side Rinseport for discharging used rinsing liquid and / or - if appropriately realized - used substituate liquid of a treatment process. The rinsing liquid can be advantageous over an anyway to be provided port, z. B. be derived for substituate liquid.

In addition, in certain embodiments, advantageously a Rinseport adapter on the functional device (disposable side Rinseport adapter) can be replaced by a standard straight connector.

In such embodiments can advantageously be dispensed with a structurally much more expensive and therefore more expensive connector between the arterial and venous line section. In this way, it may be advantageous to significantly reduce the cost.

The stepwise displaceable closure devices can advantageously ensure a secure closure of the respective fluid-carrying outlet in certain embodiments. An irreversible displacement of the closure devices advantageously ensures that a once closed outlet is not accidentally opened. In this way, a risk of dripping can advantageously be reduced and a risk of contamination of the environment can be avoided.

Since the connection or coupling of the functional device and the treatment device can be substantially or completely automated or automatic, it is advantageously possible to dispense with manual connection. In turn, this can advantageously contribute to reducing or completely eliminating a risk of contamination.

By staggered placement of the inner pipe section relative to the outer pipe section, z. B. by resetting the inner pipe section relative to the outer pipe section, can advantageously protect the recessed tube section, z. B. the inner tube section, are provided from contamination by touching. A carryover of contaminated or contaminating material from the recessed tube section in the functional device can thus advantageously be avoided or the corresponding risk can be reduced.

In the following, the present invention will be described by way of example with reference to the figures of the accompanying drawings. In the drawing, identical reference numerals designate the same or identical elements. The following applies:

1A shows a longitudinal section of a coupling device of the present invention according to a first embodiment in a state in which a medical device function is inserted in a medical treatment device;

1B shows a rotated by about 120 ° view of the view 1A ;

2A shows a longitudinal section of the coupling device 1A in a flushing position;

2 B shows a rotated by about 120 ° view of the view 2A ;

3A shows the coupling device according to the invention 1A in a longitudinal section in a closed position;

3B shows a rotated by about 120 ° view of the view 3A ;

4A shows the coupling device according to the invention and the connector according to the invention in a longitudinal section in the state of a closed first closure device;

4B shows a perspective view of a connector according to the invention;

5A shows a longitudinal section of a coupling device of the present invention according to a second embodiment in a state in which a medical device function is inserted into a medical treatment device;

5B shows a rotated by about 120 ° view of the view 5A ;

6A shows a longitudinal section of the coupling device 5B in a state in which the medical device is connected to the medical device;

6B shows a rotated by about 120 ° view of the view 6A ;

6C shows a longitudinal section of the coupling device of 6A and 6C again turned opposite the representations there;

7A shows the coupling device according to the invention 5B in a longitudinal section in an operating position;

7B shows a rotated by about 120 ° view of the view 7A ;

7C shows a longitudinal section of the coupling device of 7A and 7B , again turned against the representations there;

8A shows the coupling device according to the invention 5B in a longitudinal section in the closed position;

8B shows a rotated by about 120 ° view of the view 8A ;

8C shows a longitudinal section of the coupling device of 7A and 7B , again turned against the representations there;

9 shows a coupling device according to the invention on a blood cassette;

10 shows a coupling device according to the invention in longitudinal section;

11 shows the arrangement of the closure devices of the coupling device according to the invention in flushing position;

12 shows a connector according to the invention in a perspective view;

13A shows a first state of the coupling device according to the invention a further embodiment of the invention during the connection with a connector; and

13B shows a second state of the coupling device of 13A during the connection with the connector.

The 1 to 4 show the coupling device according to the invention in a first embodiment, in which the first and the second closure means synchronously, that is, moved simultaneously.

The 5 to 8th show the coupling device according to the invention in a second embodiment, in which the first and the second closure means asynchronously, ie offset in time, are moved. As in the 5 to 8th is illustrated, first the first closure device is moved from the connector to its closed position, the second closure device only at a later time. In other embodiments, this may be the case in reverse.

1A shows a longitudinal section of a coupling device 100 of the present invention according to the first embodiment. 1A shows the coupling device according to the invention 100 in a medical device function shown cross-cut 1000 which in a medical treatment device also shown cross-cut 2000 is inserted. However, the latter are not yet by means of Ankoppeleinrichtung 100 connected or connected.

The functional device 1000 is a disposable blood cassette, the treatment device 2000 a hemodiafiltration device, but without wishing to be limited thereto.

The coupling device according to the invention 100 has an inner tube section 1 with a first lumen 3 on. The first lumen 3 serves for receiving and / or guiding a first medical fluid, for example a fresh priming and / or rinsing fluid.

The coupling device 100 also has an outer pipe section 5 with a second lumen 7 on.

The outer pipe section 5 is so at least one area 9 of the inner pipe section 1 arranged that a room 11 which part of the second lumen 7 is, between the exterior of the inner pipe section 1 and the outer tube section 5 is designed.

The space 11 serves for receiving and / or guiding the second medical fluid, for example a used priming and / or rinsing fluid.

In certain embodiments of the present invention, such as those of 1A The fluid flows in both lumens in each case only one direction, similar to a "one-way street". For example, it flows through the first lumen 3 of the inner pipe section 1 from an online substituate port Substituatflüssigkeit always only in the direction of the functional device 1000 ; through the outer pipe section 5 the liquid to be discarded always flows only from the functional device 1000 out.

The inner pipe section 1 points in the area of the coupling device 100 a free pipe end 13 on.

The outer pipe section 5 points in the area of the coupling device 100 a free pipe end 15 on.

The outer pipe section 5 indicates a first departure 17 on; the inner pipe section 1 has a second finish 19 on.

As in 1A is shown, the outer tube section 5 a first closure device 21 on. The closure device 21 may be a closure sleeve.

The inner pipe section 1 the coupling device according to the invention 100 has a second closure sleeve 23 on.

1B shows the rotated by about 120 ° object of 1A in a longitudinal section.

2A shows a longitudinal section of the coupling device according to the invention 100 out 1A in a longitudinal section in a flushing position. The functional device 1000 and the treatment device 2000 are connected to each other by means of a connector 200 connected, which in the coupling device according to the invention 100 intervenes.

The connector 200 is in 2A configured as a machine-side substituate port of a hemodiafiltration device.

A direction A of the coupling of the functional device 1000 with the treatment device 2000 is indicated by a dashed arrow in the upper part of the figure.

The connector 200 has a two-lobed end section 201 with an outer pipe section 201 and an inner pipe section 201b on. The connector 200 also has fluid lines 22 and 24 on, by means of which fluids through it to or from the coupling device 100 can flow. The fluid line 22 is in the longitudinal direction of the connector 200 in the middle of the connector 200 arranged. The fluid line 24 is close to the circumference of the connector 200 ,

As in 2A shown is the outer tube section 201 of the connector 200 in an end area of the connector 200 over the free pipe end 15 of the outer pipe section 5 the coupling device 100 pushed.

The inner pipe section 201b of the connector 200 is in the inner pipe section 1 the coupling device 100 pushed.

A fluid-tight connection between inner pipe section 1 the coupling device 100 and inner pipe section 201b of the connector 200 can through a bead 25 on an outer circumference of the inner pipe section 201b of the connector 200 or any other appropriate constructive action is achieved or reinforced. Comparable beads 26a . 26b and 26c are between outer tube section 5 the coupling device 100 and connector 200 , further between the closure devices 21 and 23 the coupling device 100 on the one hand and inner tube section 1 and outer tube section 5 the coupling device 100 on the other hand to recognize.

The first closure device 21 and the second closure device 23 are in 2A opened. This means that in the in 2A shown position both the first departure 17 So also the second departure 19 (indicated only) in unimpeded fluid communication with the first lumen 3 of the inner pipe section 1 or with the second lumen 7 of the outer pipe section 5 stand.

2 B again shows the subject of the 2A in one opposite the representation of the 2A rotated about 120 ° longitudinal section of the coupling device 100 ,

3A shows the coupling device according to the invention 100 out 1A in a longitudinal section in a closed position.

In the in 3A shown closure position closes the first closure device 21 the first departure 17 of the outer pipe section 5 the coupling device 100 ; the second closure device 23 closes the second exit 19 of the inner pipe section 1 the coupling device 100 ,

In 3A It is easy to see how a "closure of a discharge" can be understood within the meaning of the present invention: the example of the second departure 19 is in 3A to recognize that this by its blocking by means of the second closure device 23 at the point of its branching from the first lumen 3 is closed. The example of the first departure 17 in contrast, it can be seen that it is not at the point of its branching from the second lumen 7 the outer tube section is closed. Rather, the first exit 17 fluidically (ie, regarding the fluid, in this case closed to the fluid such that the fluid in question can not pass through the connection or the closure) is closed by virtue of the position of the first closure device 21 between Inner tube section 1 and outer tube section 5 a flow of the fluid coming from the interior of the functional device 1000 coming this by first departure 17 to an exterior through the coupling device 100 want to leave through it, is prevented from doing so. The first departure 17 is thus also closed, through the second closure device 23 albeit in a slightly different way than the first departure 17 in 3A the case is.

3B again shows the subject of the 3A , in a representation of the 3A rotated longitudinal section.

4A shows the coupling device according to the invention 100 and the connector according to the invention 200 in the closed position of 3A and 3B , in turn, a somewhat further rotated position of the object in longitudinal section.

The connector 200 points in a range between outer tube section 201 and inner pipe section 201b facilities 27 to take along the first closure device 21 in the direction of the coupling device according to the invention 100 on.

The connector 200 In each embodiment, it is further possible for the driver to take along the second closure devices 23 exhibit. However, these are not mandatory. Rather, other structural measures may be provided for closing the second closure device 23 such as B. mechanical positive couplings, which when closing the first closure device 21 also automatically for closing the second closure device 23 to lead. Furthermore, the second closure device 23 also be closed by z. B. a front end of the connector 200 which, when advancing in the direction of the coupling, the second closure device 23 takes along and herewith the second departure 19 closes.

4B shows a perspective view of the connector according to the invention 200 diagonally left front with two facilities 27 to take away closure devices, here to take along the first closure device 21 ,

5A shows the coupling device 100 of the present invention according to a second embodiment in a longitudinal section.

In the in 5A shown position is the functional device 1000 into the treatment device 2000 is inserted, but not yet connected.

5B shows the subject of the 5A opposite to the representation there rotated by about 120 ° in a longitudinal section.

6A shows a longitudinal section of the coupling device 100 out 5B in a state in which the functional device 1000 with the treatment device 2000 is connected. The coupling device 100 is in flushing position. This means that both the first closure device 21 of the outer pipe section 5 the coupling device 100 as well as the second closure device 23 of the inner pipe section 1 the coupling device 100 or the first departure 17 and the second departure 19 when open.

6B shows the subject of the 6A , compared to the representation there rotated by about 120 ° in a longitudinal section.

6C shows the subject of the 6A and the 6B , again turned opposite to the representations there, in a longitudinal section. It can be seen that both closure devices 21 and 23 or the departures 17 and 19 open, and that both the front end and the facilities 27 of the connector 200 to take along the first closure device 21 still no contact with the locking devices 21 and 23 and therefore do not exert any pressure on them, which would lead them into a closed position.

7A shows the coupling device according to the invention 100 of the second embodiment in a longitudinal section in an operating or treatment position.

The first closure device 21 of the outer pipe section 5 the coupling device 100 was done by means of the connector 200 with a first penetration depth as far as in direction A of the coupling (dashed arrow) to the functional device 1000 postponed that first exit 17 of the outer pipe section 5 is closed.

Out 7B which is the representation of the 6B corresponds, it can be seen that the second exit 19 was not yet closed, although the second closure device 23 when moving the first closure device 21 was moved due to the geometric design, especially the connector 200 and other components of the coupling device 100 ,

7C shows the coupling device 100 in their operating position the 7A and 7B in a representation similar to that of 6C ,

In comparison of the 7B With 7C one recognizes that the edge of the second closure device located on the right in the figures 23 , which at its the connector 200 is arranged opposite end, and also their circumference are corrugated or stepped designed. This makes it possible to advantageously guide the second closure device advantageously in a small space or with a small overall depth of the functional device 23 inside the inner pipe section 1 achieved and at the same time the second closure device 23 to close the second exit 19 can be used.

The 8A . 8B and 8C show the coupling device according to the invention of the second embodiment in the corresponding representations of 7A . 7B and 7C ,

Unlike in the 7A . 7B and 7C shown position is in the 8A . 8B and 8C now also the second closure device 23 of the inner pipe section 1 the coupling device 100 by means of the connector 200 with a second penetration depth as far as in the direction of the coupling (dashed arrow) to the functional device 1000 postponed that even the second departure 19 of the inner pipe section 1 is closed.

9 shows a coupling device according to the invention 100 on a section of a blood cassette in a perspective as an example of a functional device according to the invention 1000 ,

In 9 is the departure 17 to recognize. leaving 19 is not recognizable. By means of arrow, however, its position relative to the inner pipe section 1 indicated.

10 shows a coupling device according to the invention 100 slightly perspective in a longitudinal section of the coupling device 100 and a cross section of the functional device 1000 ,

11 shows the arrangement of the closure devices 21 . 23 the coupling device according to the invention 100 in Spülstellung in a longitudinal section of the coupling device 100 ,

The first departure 17 of the outer pipe section 5 the coupling device 100 and the second departure 19 of the inner pipe section 1 the coupling device 100 are not locked.

12 shows a connector according to the invention 200 in a three-dimensional representation. Good to see are the furnishings 27 to take along the closure device. Good to see are also the openings 31 of two fluid lines 24 ,

13A shows a first state of the coupling device according to the invention 100 a further embodiment during the connection with a connector 200 before contact of a front side 201c of the inner pipe section 201b of the connector 200 with an element 33 the second closure device 23 ,

The second closure device 23 is in an open position.

The element 33 used in some embodiments of the invention tolerance compensation, z. B. between the second closure device 23 and the front side 201c of the inner pipe section 201b of the connector 200 , or serves a tolerance compensation between the medical functional device 1000 and the medical treatment device 2000 generally.

The element 33 is in the example 13A between the second closure device 23 and the front side 201c of the inner pipe section 201b of the connector 200 arranged. In other embodiments of the invention, the element is 33 at the front 201c opposite side of the closure device 23 arranged. In these embodiments, the element comes 33 not with the front side 201c in contact.

The element 33 can be on or on the second closure device 23 be provided.

The element 33 can with the closure device 23 be made integrally. The element 33 is in one embodiment integral with the second closure device 23 manufactured, z. B. as (plastic) injection molded part.

In other embodiments, the element is 33 manufactured as a separate component. The element 33 can thus be an additional, self-produced element. In some embodiments, it is in use with the second closure device 23 in (touch) contact.

The element 33 may be a deformable element. It can - similar to a "crumple zone" - to prevent damage to the medical device function 1000 serve.

The deformability of the element 33 for tolerance compensation is based z. B. on its compressibility, ie in the variability of its (permanent or temporary) geometry and / or in the variability of its position in or relative to the closure device 23 ,

For example, tolerance compensation may be desired and / or required when the second closure device 23 to a stop 35 was moved, the inner pipe section 201b of the connector 200 however - z. B. because the desired or optimal tolerances in the production (eg., The medical device function 1000 ) were not maintained - continuing to drive on the second closure device 23 acts.

During the connection of the coupling device 100 and the connector 200 becomes the second closure device 23 axially in the direction of movement of the connector 200 when connected move as soon as they are in contact with the front 201c of the inner pipe section 201b of the connector 200 arrives. The at the meeting of second closure device 23 and inner pipe section 201b of the connector 200 The forces generated by the deformable element 33 for tolerance compensation into the second closure device 23 directed.

Once the second closure device 23 to the stop 35 has been shifted, which are the impact of the second closure device 23 on the stop 35 generated forces by deformation of the element 33 added.

The deformation can be elastic or permanent.

Depending on the design and / or construction and / or arrangement of the element 33 is a more or less pronounced, z. B. low, elastic or plastic deformation of the element 33 possible.

Therefore, the element 33 detached from all other features in 13A Shown are also designed as a spring or any other component which can absorb forces, in particular for the protection of other structures and / or to absorb forces.

The element 33 can be destroyed in the deformation and / or in the interior of the second closure device 23 be pressed into it. This is provided in particular in embodiments in which a reuse of the coupling device is not desired or excluded.

13B shows a second state of the coupling device 100 of the 13A after the second closure device 23 to a stop 35 was moved.

As in 13B shown, became the element 33 for tolerance compensation in the interior of the closure device 23 pushed in and deformed. reference numeral description 1000 medical technical function device 2000 medical treatment device 100 Docking 200 connector 201 two-lumen end section of the connector 200 201 Outer pipe section of the connector 200 201b Inner pipe section of the connector 200 201c Front side of the inner pipe section 201b of the connector 200 300 control device 1 Inner tube section 3 first lumen of the inner tube section 1 the coupling device 100 5 Outer tube section 7 second lumen of the outer tube section 5 the coupling device 100 9 Area of the inner pipe section 1 around which the outer tube section 5 is arranged 11 Space between an exterior of the inner pipe section 1 and the outer tube section 5 13 free pipe end of the inner pipe section 1 the coupling device 100 15 free pipe end of the outer pipe section 5 the coupling device 100 17 first outlet (from the outer tube section or from the second lumen) = drain line 19 second outlet (from the inner tube section or from the first lumen) = infusion / substituate line 21 first closure device (of the outer pipe section 5 or the first departure 17 ) 22 fluid line 23 second closure device (of the inner pipe section 1 or the second departure 19 ) 24 fluid lines 25 Bead on an outer circumference of the inner pipe section 201b of the connector 200 26a . 26b . 26c beads 27 Facilities of the connector 200 to take along the closure devices 21 . 23 31 openings 33 (deformable) element 35 attack A Direction of coupling

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102009024664 [0115]
• DE 102009024468 [0115]
• DE 102009024575 [0122]

Claims (26)

Coupling device ( 100 ) for producing at least two fluid connections between fluid guides of a medical-technical functional device ( 1000 ) on the one hand and a medical treatment device ( 2000 ) on the other hand, wherein the coupling device ( 100 ) at least: - an inner pipe section ( 1 ) with a first lumen ( 3 ) provided for receiving and / or guiding at least a first medical fluid; and - an outer tube section ( 5 ) with a second lumen ( 7 ), wherein the outer tube section ( 5 ) at least one area ( 9 ) of the inner pipe section ( 1 ) is arranged such that a space ( 11 ) within the second lumen ( 7 ) between the exterior of the inner pipe section ( 1 ) and the outer pipe section ( 5 ), the space ( 11 ) is provided for receiving and / or guiding at least one second medical fluid. Coupling device ( 100 ) according to claim 1, wherein the area ( 9 ) or a free pipe end ( 13 ) of the inner pipe section ( 1 ) coaxially or concentrically in the outer tube section ( 5 ) is arranged. Coupling device ( 100 ) according to claim 1 or 2, wherein the first lumen ( 3 ) and the second lumen ( 7 ) in the area of the coupling device ( 100 ) in at least one position of the coupling device ( 100 ) are fluid-tightly separated from each other, in at least one further position of the coupling device ( 100 ) are in fluid communication with each other. Coupling device ( 100 ) according to one of the preceding claims, wherein in the region of the coupling device ( 100 ) a free pipe end ( 13 ) of the inner pipe section ( 1 ) with respect to a free pipe end ( 15 ) of the outer pipe section ( 5 ), or vice versa, each related to a position of the free pipe end ( 13 ) of the inner pipe section ( 1 ) and a position of the free pipe end ( 15 ) of the outer pipe section ( 5 ) relative to a direction perpendicular to the coupling between medical device ( 1000 ) and medical treatment device ( 2000 ) level. Coupling device ( 100 ) according to one of the preceding claims, provided for connection to a connector ( 200 ) of the medical treatment device ( 2000 ) or the medical-technical functional device ( 1000 ), where the connector ( 200 ) a two-lumen end section ( 201 ) for separately guiding the first and second medical fluids within a portion of the connector ( 200 ) having. Coupling device ( 100 ) according to one of the preceding claims, comprising a first closure device ( 21 ) to close a first departure ( 17 ) for the second fluid of the outer tube section ( 5 ). Coupling device ( 100 ) according to claim 5 and 6, wherein the first closure device ( 21 ) axially with respect to a longitudinal axis of the connector ( 200 ) or a longitudinal axis of the outer pipe section ( 5 ) or in the direction of the coupling between medical functional device ( 1000 ) and medical treatment device ( 2000 ), to close the first departure ( 17 ) of the outer pipe section ( 5 ) is displaceable. Coupling device ( 100 ) according to one of the preceding claims, comprising a second closure device ( 23 ) to close a second exit ( 19 ) for the first fluid of the inner pipe section ( 1 ). Coupling device ( 100 ) according to claim 5 and 8, wherein the second closure device ( 23 ) axially with respect to a longitudinal axis of the connector ( 200 ) or a longitudinal axis of the inner pipe section ( 1 ) or in the direction of the coupling between medical functional device ( 1000 ) and medical treatment device ( 2000 ), to close the second exit ( 19 ) of the inner pipe section ( 1 ) is displaceable. Coupling device ( 100 ) according to one of claims 5 to 9, wherein the first closure device ( 21 ) and / or the second closure device ( 23 ) depending on the extent of the connector movement ( 200 ) in the direction of the coupling between medical functional device ( 1000 ) and medical treatment device ( 2000 ) by facilities ( 27 ) of the connector ( 200 ) for taking along the first and / or the second closure device ( 21 . 23 ) of the coupling device ( 100 ) to be taken. Coupling device ( 100 ) according to claim 10, wherein the first and / or the second closure device ( 21 . 23 ) are configured to communicate by means of the connector ( 200 ) or a portion thereof irreversibly to the corresponding free pipe end ( 13 . 15 ) of the inner pipe section ( 1 ) or of the outer pipe section ( 5 ) in the area of the coupling device ( 100 ) to be displaceable. Coupling device ( 100 ) according to one of claims 5 to 11, wherein a displacement path of the first closure device ( 21 ) and / or the second closure device ( 23 ) of the coupling device ( 100 ) by an appropriate penetration depth (d1 or d2) of the connector ( 200 ) or a portion thereof in the coupling device ( 100 ) is determined. Coupling device ( 100 ) according to one of the preceding claims, wherein the inner pipe section ( 1 ) as a supply line for a fresh medical fluid and the outer tube section ( 5 ) is provided and configured as a drain line for a used and / or discarded medical fluid, or vice versa. Connector ( 200 ) provided for connection to a coupling device ( 100 ) according to one of claims 1 to 13. Medical-technical functional device ( 1000 ), which is designed as an external medical functional device of a medical technology system, such as a blood cassette or as an extracorporeal blood circuit, provided for connection or connected to a coupling device ( 100 ) according to one of claims 1 to 13. Medical treatment device ( 2000 ), in particular configured as an extracorporeal blood treatment device, provided for connection or connected to a coupling device ( 100 ) according to one of claims 1 to 13. Method for connecting a medical functional device ( 1000 ) with a medical treatment device ( 2000 ) with the step: - using a coupling device ( 100 ) according to one of claims 1 to 13. The method of claim 17 for priming and / or rinsing an extracorporeal blood circulation comprising the steps of: - introducing priming and / or rinsing liquid into the first lumen ( 3 ) of the inner pipe section ( 1 ); - directing and / or guiding the priming and / or rinsing fluid in an interior of the extracorporeal blood circulation; and - diverting used priming and / or rinsing fluid through the second lumen ( 7 ) of the outer pipe section ( 5 ). Method according to claim 17 or 18, with the further step: - shifting the first closure device ( 21 ) to close the first departure ( 17 ) of the outer pipe section ( 5 ). Method according to one of claims 17 to 19, with the further step: - shifting the second closure device ( 23 ) to close the second exit ( 19 ) of the inner pipe section ( 1 ). Method according to one of claims 17 to 20, wherein the displacement of the first closure device ( 21 ) and the second closure device ( 23 ) takes place at the same time. Method according to one of claims 17 to 20, wherein the displacement of the first closure device ( 21 ) and the second closure device ( 23 ) is delayed and / or independent of each other. Control device ( 300 ), in particular intended for use with a medical treatment device ( 2000 ) according to claim 16, and configured to automatically perform at least one of the steps of a method according to any one of claims 17 to 22. Digital storage medium, in particular floppy disk, CD or DVD, with electrically readable control signals, which can cooperate with a programmable computer system such that the mechanical steps of a method according to one of claims 17 to 22 are caused. A computer program product having program code stored on a machine-readable medium for initiating the automated steps of the method of any one of claims 17 to 22 when the computer program product is run on a computer. A computer program with program code for initiating the automated steps of the method according to any one of claims 17 to 22, when the computer program runs on a computer.

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