Holding device for attaching a peripheral component to a medical treatment device and medical treatment device with such a holding device

Abstract

Holding device (12) for attaching a peripheral component to a medical treatment device (10) with a connecting arm (14) attachable to the treatment device (10) and a receptacle (16) for the peripheral component, which are detachably connected to each other by means of a connecting device (18), comprising a first connecting element (20) on the connecting arm side and a second connecting element (22) on the receptacle side that is complementary thereto, which are force-fit connected to each other on a coupling surface (24), characterized in that the first connecting element (20) has at least two magnetic elements (26) of opposite polarity along the coupling surface (24) and the second connecting element (22) has at least two magnetic elements (28) complementary to these.

Description

Technical field

[0001] The present invention relates to a holding device for attaching a peripheral component, in particular a dialyzer, to a medical treatment device and to a medical treatment device with such a holding device. State of the art

[0002] Medical treatment devices often have holders for attaching a medical peripheral device during a procedure. Medical treatment devices can include, for example, blood treatment devices. Blood treatment devices can include, for example, adsorption therapy devices, dialysis machines, infusion pumps, or plasmapheresis devices.

[0003] To prepare for patient treatment, such medical devices are often equipped with a peripheral component that must be properly attached to the device and removed after treatment. Such a peripheral component could be, for example, an adsorber or a dialysis filter. Another example of a peripheral component is an infusion bottle, which is also attached to an infusion machine using a holder.

[0004] Holding devices are known from the prior art, such as from DE 10 2010 043 574 A1, which are designed for the detachable attachment of peripheral components to a treatment device. Such holding devices typically have a connecting arm attached to the treatment device, at the distal end of which a clamping holder for receiving the peripheral component is mounted. The clamping holder is typically connected to the connecting arm by means of a locking coupling, which allows rotational actuation of the clamping holder relative to the connecting arm.

[0005] During use of the treatment device, peripheral components housed in the holding device are often positioned at a distance from the device itself. This causes the holding device to protrude into the surrounding space and be at increased risk of damage, for example, if a user accidentally touches it or if the holding device is unintentionally bumped against another object during transport.

[0006] Furthermore, the connection points between the connecting arm and the clamping holder, particularly in the area of ​​the locking coupling, have edges or recesses that are difficult to access for cleaning or disinfection, making them prone to dirt accumulation and difficult to clean and disinfect. This can be particularly undesirable for treatment devices in the medical and laboratory technology sectors. Description of the invention

[0007] Starting from the known state of the art, it is an object of the present invention to provide an improved holding device for a medical treatment device.

[0008] The problem is solved by a holding device for attaching a peripheral component to a medical treatment device with the features of claim 1. Advantageous embodiments are described in the dependent claims, the present description, and the figures.

[0009] Accordingly, a holding device for attaching a peripheral component to a medical treatment device is proposed. The holding device comprises a connecting arm that can be attached to the treatment device and a receptacle for the peripheral component, which are detachably connected to one another by means of a connecting element of the holding device. More precisely, the connecting element comprises a first connecting element on the connecting arm side and a second connecting element on the receptacle side that is complementary to it, which are force-fitted to one another at a coupling surface. The holding device is characterized in that the first connecting element has at least two magnetic elements of opposite orientation or polarity along the coupling surface, and the second connecting element has at least two magnetic elements complementary to these.

[0010] The medical treatment device is preferably a blood treatment device, for example, an adsorption therapy device, a dialysis machine, an infusion device, or a plasmapheresis device. Accordingly, the peripheral component can be, for example, a dialyzer or dialysis filter.

[0011] The proposed connection device utilizes a force-fit induced by magnetic attraction to mechanically couple the receptacle, and thus any peripheral component it may hold, to the connecting arm. This ensures that the receptacle can be detached from the connecting arm without causing damage. In other words, the receptacle can be reversibly separated from the connecting arm without damaging the holding device. Compared to prior art holding devices where the connecting arm and the receptacle are rigidly connected via a snap-fit ​​coupling, the proposed holding device is less prone to breakage when unintentional force is applied.For the connecting device disclosed here can, by means of the force-lock induced by magnetic forces, define a desired separation point for the holding device, at which the receiver detaches from the connecting arm in the event of unintentionally high forces acting on the holding device.

[0012] The connecting device also allows for simple and efficient attachment of the holder to the connecting arm. Because the holder can be easily detached from and reattached to the connecting arm, different, interchangeable holders can be provided for the device. These different holders can have structural or functional properties optimized for different peripheral components. Thus, the proposed holding device further contributes to the high configurability of the treatment device.

[0013] Furthermore, the connection device offers the advantage that the holder and the connecting arm can be easily decoupled to expose the coupling surfaces between them. This simplifies proper cleaning and disinfection of the individual components of the holding device. In contrast to holding devices known from the prior art, this does not require loosening any screw or plug connections.

[0014] In this context, it was further recognized that the connecting elements enable the contactless transmission of the attractive forces that ensure the frictional connection. Accordingly, it can be provided that the respective connecting elements, in particular the respective magnetic elements, are embedded in the connecting arm and / or in the receptacle. This allows for the reduction of edges or recesses in the coupling area, and consequently the susceptibility of the holding device to dirt, and enables the respective housing parts in the area of ​​the connecting elements to be designed essentially smoothly and flat. This is particularly advantageous in the fields of medical and laboratory technology for cleaning and disinfection.

[0015] In a further development, the coupling surface can be curved. This allows for a positive-locking connection between the components in addition to the force-locking connection. This contributes to a force-flow-optimized design of the connection device. For example, in the area of ​​the coupling surface, the first connecting element can have a concave shape and the second connecting element a complementary convex shape. Alternatively or additionally, the first connecting element can have a convex shape in the area of ​​the coupling surface and the second connecting element a complementary concave shape. In particular, the concave shape can be a dome shape and the convex shape a complementary recess. For example, the first connecting element can be arranged or formed at a distal end, especially at a distal end face of the connecting arm.Accordingly, the first connecting element can have a concave shape, in particular a dome shape, or a convex shape, in particular in the form of a receiving recess, on the distal end face of the connecting arm. Alternatively or additionally, the second connecting element can be arranged or formed at a proximal end, in particular on a proximal end face of the receiving element. Accordingly, the second connecting element can have a concave shape, in particular in the form of a receiving recess, or a convex shape, in particular a dome shape, on the proximal end face of the receiving element.

[0016] In a further development, the first and second connecting elements in the area of ​​the coupling surface, particularly adjacent to the coupling surface, can have corresponding positive locking elements, for example in the form of grooves and complementary pins. This can additionally contribute to a force-flow-optimized design of the holding device.

[0017] As described above, the proposed connecting device is characterized by the fact that the first connecting element has at least two magnetic elements of opposite polarity along its coupling surface. Similarly, the second connecting element has at least two magnetic elements complementary to those of the first connecting element. In other words, the second connecting element also has at least two magnetic elements of opposite polarity along its coupling surface. When the first and second connecting elements are connected, they are preferably arranged such that their magnetic elements are aligned with each other. More precisely, in this state, oppositely polarized magnetic elements of the first and second connecting elements are preferably positioned opposite each other on the coupling surface.The magnetic elements of the respective connecting elements are preferably formed by permanent magnets.

[0018] For example, the first connecting element can comprise a first magnetic element with a north pole facing the coupling surface and a second magnetic element with a south pole facing the coupling surface. Similarly, the second connecting element can also comprise a first magnetic element with a north pole facing the coupling surface and a second magnetic element with a south pole facing the coupling surface. In the connected state, the first and second connecting elements can be arranged relative to each other such that magnetic elements of opposite poles face each other at the coupling surface and thus exert a magnetic attraction on one another.

[0019] The design and arrangement of the magnetic elements result in a defined relative orientation and / or position when the connecting elements are joined. This allows the connecting device to establish a coupling position between the connecting elements without requiring a positive-locking connection, such as complementary grooves and pins. In this case, the coupling position describes a relative position between the first and second connecting elements in which oppositely polarized magnetic elements of the first and second connecting elements face each other at the coupling surface.

[0020] By providing the oppositely polarized magnetic elements, a rotational orientation of the mount relative to the connecting arm can also be determined, whereby, depending on the pattern formed by the magnetic elements of the first and second connecting element, more than one stable rotational orientation can be determined.

[0021] If it is intended to alternately attach different receptacles to the connecting arm, the device-side connecting element can also have magnetic elements in a higher-order pattern, and the different receptacles can each have magnetic components with different sub-patterns, so that the different receptacles can be arranged in different orientations.

[0022] In other words, the connecting device is preferably designed such that the magnetic elements define or encode at least one relative coupling position between the first connecting element and the second connecting element, and thus between the connecting arm and the receptacle. In the present context, "encoding" of the connecting device is understood to mean at least one coupling position defined by the connecting device, in which a relative position and orientation of the connecting elements, and thus also the relative position of the receptacle to the connecting arm, is defined.

[0023] The at least two magnetic elements of the first and / or the second connecting element can each form a magnetic pattern. In this context, a "magnetic pattern" is understood to be an arrangement of the different magnetic elements defined in a plane and / or spatially, in particular along the coupling surface. A magnetic pattern preferably comprises at least two defined magnetic zones of opposite polarity, each of which can have a defined planar and / or spatial configuration. Each of the at least two magnetic zones is preferably formed by at least one of the at least two magnetic elements. The magnetic zones are preferably arranged close together or substantially adjacent to each other. The magnetic zones can have different configurations. For example, the magnetic zones on the coupling surface can be of different sizes.The magnetic patterns formed on the coupling surfaces of the first and second connecting elements are designed to be complementary to each other. In particular, the magnetic patterns can have more than two magnetic zones on the coupling surface, for example, four magnetic zones. The magnetic elements are preferably arranged such that the at least two magnetic elements on the coupling surface of the first and / or the second connecting element form a planar magnetic pattern with at least two ferromagnetic zones of opposite orientation or polarity.

[0024] Such magnetic patterns can differ from conventional magnetic arrangements in that the magnetic zones can be arranged close together or essentially adjacent to one another. This has the effect that their magnetic field lines extend less far and less strongly into the surrounding space. In other words, the magnetic patterns described here can provide more compact and denser magnetic field lines, which is achieved in particular by closely spaced magnetic zones or closely spaced magnetic elements of opposite polarity. This property is especially advantageous when electronic devices or components are to be held or attached to the treatment device by means of the connecting device, as this reduces the distance required to avoid interference caused by the magnetic field lines of the magnetic elements.

[0025] This design of the magnetic patterns allows for a higher degree of freedom in the arrangement of the magnetic elements on the coupling surface of the respective connecting elements. Accordingly, complex arrangements of magnetic elements for encoding coupling positions can be provided while maintaining a compact design of the connecting elements. This is due to the property of the magnetic patterns that magnetic zones or magnetic elements of opposite polarity can be arranged particularly close together or adjacent to each other.

[0026] The aforementioned different magnetic patterns can also be used to establish unambiguous assignments between connecting elements, for example, to ensure that different fittings can only be attached to one designated position on the connecting arm, and not to another. This can be important when two or more fittings are to be fixed at predetermined positions on the connecting arm and swapping these positions is undesirable.

[0027] The different magnetic patterns can also be used to achieve specific positioning for different shots – for example, a first position for the first shot and a second position for the second shot. Different numbers of positions can also be provided for different shots – for example, a first position and a position rotated 180° relative to the first for the first shot, and a first position and two further positions, each rotated 120° relative to the first, for the second shot.

[0028] In a further development, the number of magnetic elements of the first connecting element can be different from or equal to the number of magnetic elements of the second connecting element.

[0029] For example, the first and / or the second connecting element can comprise at least three magnetic elements, where at least two of the three magnetic elements can have opposite polarities. By providing more than two magnetic elements on at least one of the two connecting elements, the connecting elements can be connected to each other in more than one coupling position.

[0030] In a further development, the first and / or the second connecting element can each comprise at least three magnetic elements, wherein the magnetic elements of a connecting element can be arranged along the coupling surface such that, in a first direction along the coupling surface, at least two of the three magnetic elements are arranged side by side or offset from each other, and along a second direction along the coupling surface, two of the three magnetic elements are also arranged side by side or offset from each other. The first and second directions along the coupling surface can be offset from each other or perpendicular to each other. In this way, a two-dimensional magnetic pattern of the first and / or the second connecting element can be spanned along the coupling surface.A two-dimensional magnetic pattern can be understood, for example, as a magnetic pattern in which the orientation or polarity of its ferromagnetic zones changes along a first direction and along a second direction perpendicular to it.

[0031] The first connecting element and the second connecting element, and correspondingly the connecting arm and the receptacle, can be connected to each other in a first coupling position and in a second coupling position, wherein, in particular, in a state arranged in the first coupling position relative to a state arranged in the second coupling position, the relative orientation and / or a relative position between the first and the second connecting element, especially between their magnetic elements, can differ. In the state where they are in contact at the coupling surface, the first connecting element and the second connecting element, and in particular the connecting arm and the receptacle, can be movable, in particular rotatable, relative to each other between the first coupling position and the second coupling position.In addition, the connecting elements, in particular the connecting arm and the receiver, can be connected to each other in further coupling positions, whereby a relative position or orientation of the connecting elements can differ from each other in each of the further coupling positions.

[0032] Alternatively or additionally, in a state where the connecting elements are in contact at the coupling surface, the first connecting element and the second connecting element, in particular the connecting arm and the receptacle, can be movable relative to each other from a coupling position to a removal position, in particular rotatable. The removal position describes a relative position of the connecting elements in which the magnetic elements of the first connecting element can be offset from the complementary magnetic elements of the second connecting element. In a state arranged in the removal position relative to the state arranged in the coupling position, the magnetic connection force induced by the magnetic elements can be correspondingly reduced. In the removal position, the connecting elements, in particular the connecting arm and the receptacle, can therefore be separated from each other more easily or with less force.

[0033] For example, the connection device can be designed such that the connecting elements can be pivoted relative to each other about a surface normal of the coupling surface to assume the removal position. In this way, the connection between the connecting elements can be released by a user using leverage. Furthermore, when the first and second connecting elements are in contact with each other on the coupling surface, the receptacle can be pivoted relative to the connecting arm, and in particular the second connecting element relative to the first, about a longitudinal axis of the connecting arm. In this way, a user can set a desired coupling position or the removal position.

[0034] The connecting device is preferably designed such that, in the defined, i.e., coded, coupling position, a sufficiently large holding force is provided to maintain the force-fit connection, while at the same time ensuring easy release of the connecting elements. This is achieved by equipping the connecting elements in the proposed connecting device with complementary magnetic elements, thereby inducing a magnetic holding force whose magnitude is influenced by the relative position of the connecting elements.This allows the connecting device to encode a predefined coupling position without completely blocking relative translational movement along the coupling surface or relative rotational movement around a surface normal of the coupling surface of the connecting elements, as is the case, for example, when using encoding caused by positive locking elements. As a result, sufficient holding force can be provided in the coupling position of the connecting elements, while simultaneously ensuring easy release of the connection. This can be achieved, for example, by twisting the connecting elements relative to each other.

[0035] The proposed design of the holding device can be advantageous when a dialyzer or dialysis filter is held or attached as a peripheral component.

[0036] It has been recognized that vibration movements of the dialyzer within the dialysis filter can remove air bubbles that accumulate during operation, thus ensuring its proper functioning. Vibration movements can also be generated at the holding device for this purpose. In previously known holding devices for a dialyzer, this can be achieved, for example, by rotating the dialyzer holder relative to the connecting arm, thereby generating a vibration or shaking motion at the holding device and thus at the dialyzer via the locking coupling.

[0037] In the proposed holding device, pivoting movements of the mount relative to the connecting arm can also induce vibrations or shaking movements in the holding device. This is ensured in particular by equipping the connecting elements with oppositely polarized magnetic elements. Compared to a known connection device in the form of a snap-fit ​​coupling, this can be achieved with significantly less noise emissions in the holding device proposed here. In particular, when magnetic patterns are used as magnetic elements, their closely spaced magnetic field lines can generate particularly abrupt vibrations and thus induce effective vibrations or shaking movements in the holding device to dislodge air bubbles from the dialysis filter.

[0038] In a further development, the holding device can also include a vibrating element that sets the holding device, in particular the receptacle, into vibration as required. For example, the vibrating element can be electrically driven and, in particular, induce a vibrational movement of the holding device, especially in a frequency range between 0 Hz and 10 Hz, for example, greater than 0 Hz and less than or equal to 10 Hz. The vibrating element can be configured to set the holding device into intermittent vibration. The vibrating element can generate individual vibration pulses that set the holding device into vibration in a temporal, in particular defined, sequence, wherein the vibration pulses generated in this way are induced at time intervals.In other words, the shaking cannot be realized as a cyclical movement, but rather as a sequence of mechanical impulses with time intervals, similar to a person tapping the holding device with a ballpoint pen.

[0039] Alternatively, the connecting device can form the vibrating element, which can be manually operated by a user through a relative movement between the receiver and the connecting arm.

[0040] The problem stated above is further solved by a medical treatment device with the features of claim 13. Advantageous further developments will become apparent from the preceding description of the holding device as well as from the present description and the figures. The medical treatment device comprises a holding device with the aforementioned features. The features specified in connection with the holding device are therefore also considered disclosed for the medical treatment device.

[0041] Accordingly, a medical treatment device with a holding device disclosed above is proposed. The connecting arm of the holding device can be attached to the treatment device, in particular to an outer surface of the treatment device.

[0042] Particularly advantageous in all embodiments of the present holding devices and medical treatment devices with holding devices is the design of the magnetic elements or magnetic patterns of connecting elements such that, when a connecting element is rotated relative to a complementary connecting element while the two connecting elements are in contact at a coupling surface, the resulting magnetic forces always act attractively. Thus, complementary connecting elements in contact at a coupling surface attract each other magnetically in any rotational orientation. Magnetic elements or magnetic patterns of this type ensure that no repulsion results between the complementary connecting elements in any rotational orientation.This allows complementary connecting elements of a connection to be rotated relative to each other in stages without breaking the magnetic attraction between them. The degree of rotation depends on the complementary magnetic patterns. In embodiments of the present holding devices and medical treatment devices with holding devices that have more than one coupling position in different relative rotational orientations of the connecting elements, the coupling positions can be characterized by the fact that the resulting magnetic attraction between the connected complementary connecting elements is greater in some rotational orientations than in adjacent rotational orientations.In other words, the coupling points are characterized by having local maxima of the resulting magnetic attraction forces, especially when the attraction force is applied against a rotation of the connecting elements relative to each other - e.g., parameterized via a rotation angle. Brief description of the characters

[0043] Preferred further embodiments of the invention are explained in more detail by the following description of the figures. These schematically show: Fig. 1. A perspective view of a medical treatment device with a holding device for attaching a peripheral component to the treatment device; Fig. 2 a perspective view of the in Fig. 1 Holding device shown in a state decoupled from the treatment device; Fig. 3 a longitudinal sectional view of a connecting device of the in Fig. 1 and Fig. 2 holding device shown; Fig. 4 a front view of a first connecting element of the in Fig. 3 connection device shown; and Fig. Figures 5 to 12 show a top view of a coupling surface of a connecting device of different embodiments for detachably attaching the peripheral component to the treatment device. Detailed description of preferred embodiments

[0044] Preferred embodiments are described below with reference to the figures. Identical, similar, or equivalent elements in the different figures are designated with identical reference numerals, and repeated descriptions of these elements are sometimes omitted to avoid redundancy.

[0045] In Fig. Figure 1 shows a medical treatment device 10 with a holding device 12 for holding a peripheral component. Specifically, this is a blood treatment device in the form of a dialysis machine, to which a dialyzer or dialysis filter (not shown) can be attached by means of the holding device 12. Accordingly, the holding device 12 shown here forms a dialyzer holding device for attaching a dialyzer to the treatment device 10.

[0046] Fig. Figure 2 shows the holding device 12 in a state decoupled from the treatment device 10. The holding device 12 is equipped with a connecting arm 14 that can be attached to the treatment device 10 and a receptacle 16 for the dialyzer. The receptacle 16 is designed in the form of a clamp holder.

[0047] The connecting arm 14 and the receptacle 16 are detachably connected to each other by means of a connecting device 18. As shown in Fig. As shown in Figure 3, the connecting device 18 comprises a first connecting element 20 on the connecting arm side and a complementary second connecting element 22 on the receiving side, which are force-fitted to one another at a coupling surface 24. Along the coupling surface 24, the first connecting element comprises magnetic elements 26 of opposite polarity, and the second connecting element 22 comprises magnetic elements 28 complementary to these. The first and second connecting elements 20, 22 can be force-fitted to one another at the coupling surface 24.

[0048] The first connecting element 20 is in Fig. Figure 4 shows a top view in a state decoupled from the second connecting element 22. More precisely, the first connecting element 22 comprises six magnetic elements 26 arranged side by side on a circular line along the coupling surface, three of which have a north pole, as indicated by the letter "N" in Figure 4. Fig. 3 and Fig. 4 indicated, and three a south polarity, as indicated by the letters "S" in Fig. 3 and Fig. 4 indicated. The second connecting element 22 also comprises six complementary magnetic elements 28 arranged and configured along the coupling surface 24. More precisely, the second connecting element 22 comprises three magnetic elements 28 with a north pole facing the coupling surface 24 and three magnetic elements 28 with a south pole facing the coupling surface 24. As in Fig. As shown in Figure 3, the first connecting element 20 is in the connecting arm 14 and the second connecting element 22 is embedded in the receptacle 16.

[0049] The connecting device 18 shown here is a magnetic connecting device which uses a force transmission induced by the magnetic elements 26, 28 between the first and the second connecting element 20, 22 to attach the receptacle to the connecting arm.

[0050] As in Fig. As shown in Figure 3, the coupling surface 24 is curved. This is achieved by having a distal end face of the first connecting element 20 and correspondingly of the connecting arm 14 be concave, in particular in the form of a receiving recess. Similarly, a proximal end face of the second connecting element 22 and correspondingly of the receiving arm 16 is convex, in particular in a dome shape. Alternatively, the first connecting element can have a convex shape and the second connecting element a concave shape.

[0051] In the area of ​​the coupling surface 24, the first connecting element 20 and the second connecting element 22 further comprise corresponding positive locking elements 30, 32, wherein in particular the first connecting element 20 comprises a web 30 arranged around the contact surface 24 and the second connecting element 22 comprises a groove 32 complementary to it.

[0052] In the Fig. In the coupling position shown in Figure 3, the first and second connecting elements 20, 22 are arranged such that oppositely polarized magnetic elements 26, 28 face each other on the coupling surface 24 and thus exert a magnetic attraction on one another. In this coupling position, a relative position and a relative orientation between the connecting elements 20, 22 are determined by the magnetic elements 26, 28. In other words, in the coupling position shown, the magnetic elements 26, 28 are arranged such that they encode at least one relative position and orientation of the connecting elements 20, 22.

[0053] By arranging the in Fig. The connection device 12, with its four illustrated magnetic elements 26, enables the receptacle 16 to be positioned relative to the connecting arm 14 in three different coupling positions. In each of these three different coupling positions, the relative orientation between the connecting arm 14 and the receptacle 16 differs. The connection device 18 is designed such that, in a position where the elements are in contact at the coupling surface 24, the first connecting element 20 and the second connecting element 22, and thus the connecting arm 14 and the receptacle 16, can be rotated relative to each other between the first, second, and third coupling positions.

[0054] For this purpose, the mounting 16 can be pivoted relative to the connecting arm 14 about a longitudinal axis 33 of the connecting arm 14, as shown in Fig. 1 and Fig. 2, indicated by arrow A. The receptacle 16 can be pivoted relative to the connecting arm 14 by an angle of 120° to move from one coupling position to its adjacent coupling position. Between the coupling positions, removal positions are provided into which the receptacle 16 can be moved by pivoting relative to the connecting arm 14. In the removal positions, the magnetic elements 26 of the first connecting element 20 are offset from the magnetic elements 28 of the second connecting element 22. In this position, the magnetic attraction force induced by the magnetic elements 26, 28 is lower compared to the coupling positions, thus allowing the receptacle 16 to be detached from the connecting arm 14 with less effort for the user.

[0055] The first connecting element 20 and the second connecting element 22 are configured as planar magnetic patterns with six ferromagnetic zones. The magnetic patterns thus formed by the first and second connecting elements 20, 22 are complementary to each other. The magnetic pattern of the first and second connecting elements 20, 22 is arranged along the coupling surface 24 such that in a first direction along the coupling surface 24, as shown in Fig. As indicated by arrow B, at least two magnetic elements 26 of opposite polarity are arranged one after the other. Furthermore, along a second direction perpendicular to the first direction along the coupling surface 24, as shown in Fig. 4 indicated by arrow C, two magnetic elements 26 of opposite polarity arranged one after the other.

[0056] As in Fig. As shown in Figure 3, the medical treatment device 10 further comprises a vibration element 34 for generating a vibrational movement on demand, which sets the holding device 12 into oscillation. The vibration element 34 is electrically driven and configured to induce a vibrational movement of the holding device 12 in a frequency range between 0 Hz and 10 Hz.

[0057] Fig. Figures 5 to 12 show a top view of the coupling surface 24 of the connecting arm 14 or the receptacle 16, illustrating different embodiments of the connecting elements 20, 22. More precisely, they show different embodiments of the magnetic elements 26, 28 of the connecting elements 20, 22, which are designed as a planar magnetic pattern. Fig. Figures 5 to 12 show at least part of the magnetic pattern of a connecting element 20, 22.

[0058] In Fig. Figure 5 shows a circular magnetic pattern in which essentially strip-shaped magnetic zones of opposite polarity are arranged one below the other or next to each other along the circular surface. The magnetic zones are formed by individual magnetic elements 26, 28. The magnetic elements 26, 28 are arranged adjacent to each other along the coupling surface.

[0059] Fig. Figure 6 shows a circular magnetic pattern in which several circular magnetic zones with a north pole are arranged in a regular pattern along the circular area. Between the circular magnetic zones, another magnetic zone with a south pole is implemented.

[0060] Fig. 7 and Fig. Figure 8 shows further circular magnetic patterns in which magnetic zones of opposite polarity are arranged next to each other.

[0061] Fig.Figures 9 to 12 show magnetic patterns formed from two spaced-apart circular surfaces, each of which has at least two magnetic zones of opposite polarity.

[0062] Where applicable, all individual features shown in the exemplary embodiments can be combined and / or exchanged without leaving the scope of the invention. Reference symbol list 10 medical treatment devices 12 Holding device 14 Connecting arm 16 recording 18 Connection device 20 first connecting element 22 second connecting element 24 coupling area 26, 28 Magnetic element 30, 32 Positive locking element 34 vibrating elements

Claims

[1] Holding device (12) for attaching a peripheral component to a medical treatment device (10) comprising a connecting arm (14) attachable to the treatment device (10) and a receptacle (16) for the peripheral component, which are detachably connected to each other by means of a connecting device (18), comprising a first connecting element (20) on the connecting arm side and a second connecting element (22) on the receptacle side that is complementary thereto, which are force-fitted to each other on a coupling surface (24), characterized by , that the first connecting element (20) has at least two magnetic elements (26) of opposite polarity along the coupling surface (24) and the second connecting element (22) has at least two magnetic elements (28) complementary to these. [2] Holding device according to claim 1, wherein the peripheral component is a dialyzer. [3] Holding device according to claim 1 or 2, wherein the coupling surface (24) is curved. [4] Holding device according to one of claims 1 to 3, wherein in the area of ​​the coupling surface (24) the first connecting element (20) has a concave shape and the second connecting element (22) has a complementary convex shape, and / or the first connecting element has a convex shape in the area of ​​the coupling surface and the second connecting element has a complementary concave shape. [5] Holding device according to one of claims 1 to 4, wherein the first and the second connecting element (20, 22) have corresponding positive locking elements (30, 32) in the area of ​​the coupling surface (24), in particular adjacent to the coupling surface (24). [6] Holding device according to one of claims 1 to 5, wherein the magnetic elements (26, 28) encode at least one relative coupling position between the connecting arm (14) and the receptacle (16), in which the magnetic elements (26) of the first connecting element (20) are each aligned to the complementary magnetic elements (28) of the second connecting element (22). [7] Holding device according to one of claims 1 to 6, wherein the connecting arm (14) and the receptacle (16) can be connected to each other in a first coupling position and in a second coupling position, wherein in particular in a state arranged in the first coupling position relative to a state arranged in the second coupling position of the holding device (12) a relative orientation and / or a relative position between the first and the second connecting element (20, 22) are / is different. [8] Holding device according to claim 7, in which, in a state where the first and second connecting elements (20, 22) are in contact with each other on the coupling surface (24), the connecting arm (14) and the receptacle (16) are movable relative to each other between the first coupling position and the second coupling position, in particular rotatable. [9] Holding device according to one of claims 1 to 7, in which, in a state in contact with each other at the coupling surface (24), the first connecting element (20) and the second connecting element (22) are movable relative to each other from a coupling position to a removal position, in particular rotatable, in which the magnetic elements (26) of the first connecting element (20) are arranged offset from the complementary magnetic elements (28) of the second connecting element (22). [10] Holding device according to one of claims 6 to 9, in which, in the state of the first and second connecting elements (20, 22) being in contact with each other on the coupling surface (24), the receptacle (16) is pivotable relative to the connecting arm (14) about a longitudinal axis (33) of the connecting arm (14) in order to set a desired coupling position or a removal position. [11] Holding device according to one of claims 1 to 10, which further comprises a vibrating element (34) which, as required, sets the holding device (12), in particular the receptacle (16), into vibration. [12] Holding device according to claim 11, wherein the vibrating element (34) is electrically operated and in particular induces a vibrational movement of the holding device (12), especially in a frequency range between 0 and 10 Hz. [13] Medical treatment device (10) with a holding device (12) according to any one of claims 1 to 12. [14] Medical treatment device according to claim 13, wherein the connecting arm (14) of the holding device (12) is attached to the treatment device (10), in particular to an outer surface of the treatment device (10).

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