MOUNTING DEVICE WITH SWIVEL COUPLING FOR A TRIPOD DEVICE

Description

[0001] The present invention relates to a mounting device for a stand device for arrangement in the operating room and for the local positioning or relocation of a medical device in the operating room, comprising: a mounting device extending in a longitudinal direction along a rotation axis and having a longitudinally oriented cavity for receiving a rotatably mountable connecting component of the stand device; and an adjustment device for arranging the connecting component in a predefined position relative to the mounting device. The present invention particularly relates to a mounting device having the features of claim 1 and a mounting system having the features of claim 13.

[0002] Tripods, in particular ceiling tripods such as ceiling supply units, monitor supports, or so-called spring arms or central axes, usually have one or more supports that are rigidly arranged or height-adjustable in relation to a vertical position and by means of which a medical device attached to them can be moved and positioned, e.g. in the operating room, especially in an intensive care unit. Supply units are often mounted on the tripods, on which, for example, medical-electrical end devices are arranged, which are supplied with the required media, for example during an operation. The supports define an action radius of the medical device in which the medical device can be positioned. The supports can usually be rotated about at least one rotatable connection, in particular a swivel joint.Optionally, the supports can also be adjusted in height and / or pivoted in height around an axis that is at least approximately horizontal.

[0003] The stand is often mounted on the ceiling or adjacent to a false ceiling in the operating room. The false ceiling itself is used to store cables, for example, but not to support the stand. For this purpose, the stand has a ceiling tube, for example. This often requires adjustment of the rotation position of the stand relative to the ceiling or a ceiling flange. The operating radius can be specified via the rotation position of the stand relative to a mounting point on the ceiling. To mount the stand, mounting devices with discs or flange plates shrunk onto the spindle can be used, for example. The shrunk-on discs can be screwed radially to the ceiling tube. However, this solution has design disadvantages, particularly due to special gap dimensions and component tolerances.The flange plates can be connected to the spindle and the ceiling tube, but in the previously known manner they do not allow the rotational position of the spindle to be adjusted precisely.

[0004] US 4,673,154 A shows a device from which objects can be suspended, consisting of a suspension post, a first rotor, a first bearing with a shaft, and a bearing ring rotatable about the shaft. The first end of the shaft of the first bearing is fixedly attached to the suspension post. The rotor is supported by the bearing ring of the first bearing and rotates about the axis of the shaft of the first bearing. A first bearing coupler is fixedly connected to the shaft of the first bearing and is designed to receive in fixed connection one end of the shaft of a second bearing, which is similar to the first bearing. An object support arm assembly is carried by the rotor.

[0005] DE 10 2012 001 197 A1 shows a stand for an infusion stand or as a holder for medical devices comprising at least one outer tube and an inner tube, wherein the inner tube can be inserted into the outer tube and the tubes can be moved relative to one another in their longitudinal direction and can be locked in at least one longitudinal direction, and at least one automatic actuating element for at least temporarily releasing the locks between the tubes, which is characterized in that the inner tube has a locking device which, in the locked state, prevents a rotational movement of the inner tube relative to the outer tube.

[0006] DE 31 00 819 A1 shows a ceiling pivot bearing for supporting medical devices whose position can be locked by brakes and stops. It contains the connections for the energy and gas supply lines.

[0007] US 4,738,369 A shows a support for patient monitoring equipment provided by a vertical column suspended from the ceiling by means of a carriage assembly mounted for lateral movement on roller assemblies along a pair of parallel, ceiling-mounted rails. The column is stabilized by the roller assemblies, which include both rollers running on the rail flanges and rollers located below the rails to prevent the column from rocking.

[0008] It is an object of the present invention to provide a mounting device by means of which an alignment of the spindle and thus a determination of the operating radius of the stand device in the operating room can be carried out and adjusted as precisely as possible. The object is in particular also to provide a mounting device by means of which the operating radius can be set or readjusted in a particularly simple manner. The mounting device should preferably also be characterized by a high load-bearing capacity and be suitable for absorbing and transmitting high weight forces. The mounting device preferably has a simple structural design and can be manufactured cost-effectively. The mounting device can also preferably be mounted or adjusted easily.

[0009] This object is achieved by a mounting device for a stand device for arrangement in the operating room and for the local positioning or relocation of a medical device in the operating room, in particular by a rotary movement, with the features of claim 1. Advantageous embodiments emerge from the subclaims.

[0010] Accordingly, a mounting device for a stand device for arrangement in the operating room and for the local positioning or relocation of a medical device in the operating room, in particular by a rotational movement, is proposed, comprising, among other things: a mounting device extending in a longitudinal direction along a rotation axis and having a longitudinally oriented, in particular cylindrical, cavity for receiving a rotatably mountable connecting component of the stand device, in particular a spindle; an adjustment device for the rotationally fixed arrangement of the connecting component in a predefined position relative to the mounting device, wherein the adjustment device is designed to be rotationally fixedly connectable to the connecting part; and an anti-rotation element; wherein the mounting device forms a rotary coupling adjustable about the rotation axis for mounting the connecting component on the mounting device.This allows for easy adjustment or readjustment of the spindle's rotational position relative to the mounting device. The tripod's operating radius can be easily defined.

[0011] Preferably, the rotary coupling can be adjusted without dismantling any components of the mounting device or tripod device, apart from a cover or individual removable cover parts.

[0012] Preferably, the mounting device is configured to mount the connecting component in a first state in a rotationally and axially fixed manner, and in a second state in a rotationally and axially fixed manner, particularly when coupled to the adjustment device. This, in conjunction with the adjustment device, enables the adjustment of defined rotation angle positions.

[0013] A stand device is preferably understood to be a device for holding, stationary arranging / positioning and / or moving at least one medical device that can be permanently mounted or positioned on a wall (in a wall support) or a ceiling or even on the floor of an operating room or any other room for medical purposes, e.g. a ceiling stand. The stand device cannot then be moved completely freely in the operating room, but can only be moved within a certain radius of action, in particular relative to a fastening point or mounting point arranged on a ceiling or wall of the operating room. The stand device can be designed as a ceiling supply unit mounted on a room ceiling and have one or more supply consoles that are mounted and positionable on one or two support arms. The stand device can also be designed as a monitor support.The stand device can also be designed as a so-called spring arm, particularly mounted on a wall, and can include, for example, a light. The stand device can also be designed as a so-called central axis, particularly mounted on a ceiling, and can include a plurality of support systems, each with at least one support on which, for example, a monitor or a light is mounted. The stand device preferably has at least two support arms.

[0014] A medical device is preferably understood to be a supply console, by means of which means for supplying a patient and / or instruments for a surgeon and / or light, clean air, or other media required in the operating room can be provided. The medical device preferably has some kind of control panel and / or some kind of display device for graphically displaying, for example, patient data.

[0015] A mounting device is understood to be a device by means of which the stand device can be mounted to a room ceiling and which forms a coupling with a connecting component of the stand device, in particular a rotary coupling with a spindle. The mounting device can comprise a ceiling flange or be mounted to a ceiling flange by means of one or more brackets.

[0016] A connecting component is preferably understood to be a component by means of which individual supports of the stand device can be connected to the mounting device and preferably also to each other. In a stand device in the form of a so-called central axis, the connecting component can be designed as a centrally arranged spindle on which several supports or support arms are mounted.

[0017] An adjustment device is preferably understood to be a device by means of which a specific relative position of the connecting component relative to the mounting device can be adjusted or set. Individual relative positions can be predefined using the adjustment device. The adjustment device is preferably mounted on the connecting component in a rotationally fixed manner. According to one variant, the adjustment device exclusively performs the function of an anti-rotation device, but not of an axial locking device.

[0018] A rotary coupling is preferably understood to mean a connection by means of which a coupling can be ensured in a specific rotational position, whereby a relative rotational movement can be made possible, be it stepwise or continuously.

[0019] An operating room can also be considered an examination room or an intensive care unit, i.e. a room for carrying out medical treatments or therapies.

[0020] According to one embodiment, the adjustable rotary coupling is formed by the adjustment device and the mounting device, wherein the adjustment device can be positioned in a predetermined rotational position about the rotational axis relative to the mounting device and can be mounted in a rotationally fixed manner. This allows adjustment by rotating the adjustment device relative to the mounting device. The adjustment device is configured to mount the connecting component on the mounting device in a rotationally fixed manner.

[0021] According to one variant, the adjustment device is designed separately from the connecting component and separately from the mounting device as a separate component of the mounting apparatus. By designing the adjustment device separately from the spindle, a coupling can be provided by means of which the position of the spindle relative to the mounting device can be adjusted in a flexible and simple manner. Preferably, the adjustment device can be positively coupled to the connecting component, in particular in different axial positions. This type of interface enables, for example, the arrangement of a different number of supports or differently dimensioned supports without the need for structural modifications to the interface.

[0022] Optionally, the adjustment device can also form a single component together with the connecting component. For example, the adjustment device can be integrally connected to the connecting component, in particular by welding.

[0023] The cavity is geometrically designed to correspond to the connecting component and forms a pivot bearing for the connecting component. This allows the connecting component to be rotated in the assembly device for adjusting its rotational position.

[0024] Preferably, the mounting device and the adjusting device are arranged in series with one another in the axial direction and each overlap the connecting component.

[0025] According to one embodiment, the adjustment device has a rotation stop, in particular a groove or tongue, which is geometrically designed to correspond to a rotation stop, in particular a groove or tongue, arranged on the connecting component. As a result, rotation of the adjustment device can cause rotation of the spindle and vice versa. Adjusting the rotational position of the adjustment device relative to the mounting device thus also directly enables adjustment of the rotational position of the spindle in the operating room. Preferably, the groove extends at least approximately in the longitudinal direction. The rotation stop can optionally also be ensured by another positive coupling, e.g. a gear ring or any shoulders or webs that mesh with one another in the radial direction. The rotation stop can also assume the function of a centering device.

[0026] Preferably, the mounting device is configured both to prevent rotation, in particular by means of a passage arranged in the axial direction, and to secure the connecting component in the axial direction, in particular by means of at least one passage arranged in the radial direction. This allows the readjustment or adjustment of the rotary coupling to be carried out without any additional aids or support devices, even when the stand device has a significant intrinsic mass, e.g., when a complete supply console is attached to the stand device.

[0027] According to the invention, the adjustment device has a plurality of coupling points in the form of holes or passages, each for defining one of a plurality of rotational positions of the rotary coupling, which are arranged on a pitch circle, wherein the adjustment device has an annular geometry or is designed as an annular disc (flat ring). The coupling points are each preferably accessible from an upper side of the adjustment device. The pitch circle is preferably larger than a diameter of the cavity, which can ensure good accessibility from the outside. The coupling points are preferably arranged as far radially outward as possible on the adjustment device. This allows adjustment to be carried out easily, even when the adjustment device is arranged under a room ceiling and is difficult to access. The coupling points are preferably accessible from an end face of the adjustment device.The holes or passages are preferably aligned in the axial direction, in particular parallel to the axis of rotation.

[0028] The adjustment device preferably has an outer diameter that is greater than or equal to the other components of the mounting device. This allows the adjustment device to provide an interface on a peripheral surface or an outer edge, in particular mounting slots, to which a cover or shroud of the mounting device can be mounted. Attaching a shroud to the adjustment device has the advantage that the shroud can be easily removed and that the rotary coupling is easily accessible.

[0029] The adjustment device can have an annular support surface that is geometrically configured to correspond to an annular bearing surface of the connecting component. This allows the connecting component to be precisely coupled to the adjustment device. The support surface can serve as a stop for a corresponding shoulder of the connecting component.

[0030] According to one variant, the adjustment device has a passage with an inner diameter smaller than the diameter of the cavity or smaller than the inner diameter of an inner surface of the mounting device. This allows the connecting component to be brought into contact with a shoulder of the connecting component on the adjustment device.

[0031] According to one embodiment, the mounting device has a flat lower end face against which the adjustment device can be brought into contact in a predefined axial position. This allows the adjustment device to be precisely aligned relative to the mounting device, so that the anti-rotation element can be arranged in different positions without tilting, particularly manually.

[0032] According to one embodiment, the mounting device comprises at least one fastening section with a plurality of fastening means, in particular holes or bores, wherein the fastening means define different axial mounting positions. This allows a specific height position of the stand device relative to a room ceiling or a ceiling flange to be easily adjusted.

[0033] The adjustment device preferably has 15 to 30, preferably 20 to 25 holes, so that a relative rotational position of the spindle relative to the mounting device can be adjusted in comparatively small angular increments, e.g., in increments of 15°. Such adjustment of the relative rotational position is particularly advantageous with regard to stops or anti-twist devices of the stand device that limit the rotational movement. Thus, the operating radius of the stand device for positioning the medical device can be flexibly adjusted.

[0034] According to one variant, the mounting device has a plurality of threaded holes for receiving fastening elements that can be inserted in the longitudinal direction, wherein the threaded holes are arranged on the same pitch circle as corresponding coupling points / holes of the adjustment device. The threaded holes are preferably arranged on a lower end face of the mounting device and extend at least approximately in the longitudinal direction. This enables simple assembly and easy readjustment. Preferably, three to five threaded holes are provided which are accessible from an underside when the mounting device is assembled, so that fastening elements can be inserted and fastened, in particular screwed, from below in the axial longitudinal direction. A fitter can thereby remain in at least approximately the same position under the mounting device when assembling all of the fastening elements.A radial screw connection is not required. This also allows the installer to be positioned lower down, resulting in safer assembly with fewer risks, such as a reduced risk of the installer falling. Visual inspection of the fasteners for correct positioning is also easier. Any pressure or force that might need to be applied manually in the assembly direction, i.e., longitudinally, can be applied more easily precisely in the longitudinal direction.

[0035] According to one embodiment, the at least one fastening section on an outer circumferential surface is formed by a web projecting in the radial direction, wherein the mounting device preferably has at least three fastening sections arranged in a star shape, in particular at equal distances from one another in the circumferential direction. This allows a load (in particular weight or torque) to be transmitted at a force application point located far outward. Especially with several fastening sections distributed symmetrically around the circumference of the mounting device, a force can be transmitted in a homogeneous manner at advantageous force application points.In the event that the adjustment device is to be attached to the assembly device, a specific rotational position can be set in a comparatively precise manner or in particularly small rotational steps or angles, in particular independently of the diameter of the spindle and largely independently of the loads to be transmitted.

[0036] Preferably, the fastening sections are arranged circumferentially on the outer surface, in particular at the same distance from one another in the circumferential direction. This facilitates adjustment with regard to a plurality of different rotation angle positions.

[0037] According to the invention, the mounting device has a particularly tubular / tube-like receptacle for the anti-rotation element, wherein the receptacle is preferably arranged on an outer side, in particular on the outer surface of the mounting device, or at least partially forms the outer surface. This allows the anti-rotation element to be easily removed or inserted. The receptacle preferably has a through-bore extending to a lower end face of the mounting device. A receptacle configured in this way can also be referred to as a locking tube.

[0038] The receptacle is preferably designed for arranging an anti-rotation element aligned in the axial direction, in particular a bolt connection in the axial direction. The receptacle preferably comprises a lower (in particular tubular) receiving section, which has an axial extension less than the length of the anti-rotation element.

[0039] According to one embodiment, the receptacle has an access, in particular an access from the radial outside, wherein the access is preferably designed in the form of a milled recess. This facilitates manual adjustment. Preferably, the access has an axial extension that is greater than the length of the anti-rotation element and greater than the axial extension of a lower portion of the receptacle.

[0040] The access preferably has an upper access surface against which the anti-twist element can be brought into contact, in particular in a predefined axial position. A bolt with an edge / head / step, for example, can be mounted on the upper access surface so that the rotary coupling can be easily adjusted manually. The bolt can be inserted into the receptacle and secured there by gravitational forces alone. This means that an installer only has to perform a single insertion movement, which can also be carried out in a particularly short time. A turning movement or screwing is not required, which is particularly advantageous in difficult-to-access positions directly below a room ceiling. The anti-twist element can be easily removed and reassembled manually, in particular without tools.This is particularly advantageous for hard-to-reach mounting points on the tripod, not least because the technician has both hands free. According to one variant, the anti-rotation element can be secured not only by gravity, but also, or alternatively, by a spring pin.

[0041] According to one embodiment, the mounting device has an axial lock, by means of which the connecting component can be mounted in a predefined axial position on the mounting device, in particular rotatable relative to the mounting device. The axial lock can facilitate assembly or readjustment. The tripod can be secured by means of the axial lock, in particular during adjustment of the rotational position or during the fastening of individual fastening elements. The mounting device can also reduce the risk of tilting within the mounting device. The mounting device can provide an easily adjustable rotary coupling with only three main components. The coupling consists of three main components: the mounting device, the adjustment device or flat ring, and the axial lock. The axial lock can be or remain permanently mounted.

[0042] Preferably, the axial locking device, in conjunction with the cavity, forms an axially fixed pivot bearing for the connecting component, i.e., a bearing that allows rotation in a predefined axial position. The axially fixed pivot bearing provides a degree of freedom of movement around the axis of rotation and prevents movement along the axis of rotation.

[0043] According to one variant, the axial locking device is designed to be permanently mounted and to ensure the axial locking of the connecting component in different or all assembly situations.

[0044] According to one embodiment, the mounting device is designed to hold and rotatably support the connecting component in a predetermined axial relative position, wherein a chamfer, edge, or milled recess is provided on an inner circumferential surface of the mounting device that defines the cavity. This allows an axially fixed pivot bearing to be formed using simply constructed components, which can be easily mounted during assembly of the stand device. The inner circumferential surface of the mounting device can be cylindrical, at least in sections. Preferably, the inner circumferential surface has one or more chamfers or steps designed to center a spindle within the mounting device and / or position it in a predefined axial position. With a predefined axial position, assembly can be carried out more or less "blindly," which is particularly advantageous for ceiling mounts that are difficult to access.Such chamfers or steps can also facilitate assembly, particularly in the case of a comparatively soft assembly device (e.g., made of aluminum) in which a comparatively hard spindle (e.g., made of steel) is mounted. Such chamfers or steps can, for example, prevent tilting or the formation of burrs. The chamfers or steps are preferably arranged in the circumferential direction, in particular circumferentially.

[0045] The chamfers or steps are preferably provided at a comparatively large distance from one another in the axial direction, in particular depending on a specific number, and in particular evenly distributed along the mounting device. With such a configuration, the inner circumferential surface can also be formed as a plurality of centering surface sections. Geometrically corresponding chamfers or steps are preferably formed on the spindle. One or more centering surface sections also allow for a more flexible selection of a suitable material for the spindle and / or for the mounting device.

[0046] According to one variant, assembly can also be simplified by using different fitting diameters.

[0047] According to one embodiment, the axial securing means comprises a passage arranged tangentially on the mounting device, which pierces an outer circumferential surface of the mounting device, preferably at two points, and which intersects an inner circumferential surface of the mounting device. The passage (in particular a bore or milled recess) can be arranged like a secant relative to the outer circumferential surface of the mounting device. A securing element (in particular a bolt or latch) arranged tangentially to the connecting component can be introduced into the passage, which can engage in a groove in the connecting component and can secure the connecting component axially in the mounting device. The securing element can preferably be arranged tangentially to the mounting device and is designed to correspond geometrically to the passage, in particular on a contact surface on the underside, which can ensure robust support.With a tangential bar, a specific geometry with one or more steps can be realized, and with a tangential bolt, the construction can be designed in a simple way, especially with regard to low costs.

[0048] The tangentially aligned feedthrough can intersect an inner surface of the cavity in such a way that the bolt is arranged further inward than the inner surface. For example, the bolt projects further inward by half its diameter than the inner surface. A feedthrough arranged as a secant offers the advantage of a comparatively long engagement section of the bolt with the connecting component, for example compared to a radially aligned securing bolt. The bolt is arranged tangentially to the connecting component and engages tangentially into the connecting component in sections on one circumferential side of the connecting component. This type of axial locking device also has the advantage that the axial locking device does not have to be removed, particularly when the connecting component is rotated during assembly. Friction during relative rotation of the connecting component within the cavity can be kept comparatively low.Even with long support arms or high weights or moments, rotation can be easily achieved, particularly by engaging a recess on the underside of the adjustment device. The axial locking device or the tangential locking device can remain in the tangential position.

[0049] According to one variant, spacers can be provided between the adjustment device and the lower end face of the mounting device to allow the height position of the connecting component to be adjusted relative to the mounting device. Several tangential passages, each for receiving a locking element for axial locking, can also be provided one above the other in the mounting device. This allows for a simple height adjustment, whereby spacers are not necessarily required.

[0050] Preferably, a support surface is formed on the feedthrough, which is designed to transmit a (weight) force exerted by the connecting component to the mounting device. According to one variant, the support surface is U-shaped. This allows the feedthroughs to be manufactured economically, in particular by milling. On the other hand, notch stresses can be kept to a minimum both in the mounting device and in the connecting component. Preferably, the feedthrough has smaller radii on the upper side than on the underside. This makes it possible to specify the arrangement in which the respective securing element is to be arranged in the feedthrough. The risk of incorrect assembly can thus be reduced.

[0051] According to one embodiment, the axial locking device comprises at least one locking element, in particular a latch or bolt, which is designed and configured to transfer the weight of the stand device from the connecting component to the mounting device. This allows readjustment of the rotational position without having to dismantle any components of the stand device, in particular any components of a central axis. The entire stand device can be mounted on the axial locking device during adjustment of the rotational position. In other words, the axial locking device is configured to form a pivot bearing for the stand device. This significantly simplifies readjustment, because only the adjustment device needs to be loosened and reattached in a readjusted rotational position.

[0052] According to one embodiment, the passage and the receptacle for the anti-rotation element are arranged on the same circumferential surface section of the mounting device, in particular, they are manually accessible from the same side. This facilitates adjustment and assembly of the device. The anti-rotation element and the securing elements for axial securing can be secured using spring pins, specifically from the same side or on the same circumferential surface section. This also provides advantages during assembly.

[0053] According to one embodiment, the mounting device is a tubular, continuously cast part, particularly made of aluminum, with the mounting device preferably being a single piece. This design enables high stability and, at the same time, a cost-effective manufacturing method. The axial extension around the rotation axis can be largely freely selected, depending on the operating conditions and mounting position. A holder for connecting the mounting device to a ceiling flange is also preferably designed as a continuously cast part.

[0054] According to one variant, no holders are provided. The mounting device preferably has screw channels, particularly on the edge, by means of which the mounting device can be mounted directly to the flange plate(s). This also makes it possible to provide a particularly cost-effective variant. The number of components or parts is reduced. Assembly can be further simplified, especially in applications that do not require particularly great flexibility with regard to height adjustment.

[0055] According to one embodiment, the mounting device has two differently sized mating surfaces, which are configured to correspond to the mating surfaces of the connecting component and are designed to simplify assembly and provide two-point support for the connecting component. This has advantages with regard to secure assembly and resilient support.

[0056] According to one embodiment, the adjustment device has a plurality of holes, each for defining a rotational position, which are arranged on a pitch circle, wherein the adjustment device is annular, wherein the mounting device has a tubular receptacle for an anti-rotation element, wherein the receptacle is arranged on an outer circumferential surface of the mounting device, wherein the receptacle has an access from the radial outside, wherein the access has a top-side access surface against which an anti-rotation element can be brought into contact, wherein the adjustment device has a groove or tongue, which is geometrically designed to correspond to a rotation stop arranged on the connecting component, wherein the mounting device has an axial lock, which comprises a chamfer, edge or milled recess provided on an inner circumferential surface of the mounting device that delimits the cavity,The axial securing means comprises a passage arranged tangentially on the mounting device, which penetrates an outer surface of the mounting device and intersects an inner surface of the mounting device. This configuration allows for the realization of a number of the advantages achievable with the present invention.

[0057] Advantageously, the adjustment device is flat-ring-shaped and, with respect to the arrangement of the coupling points or holes, has at least 12-fold rotational symmetry, in particular at least 24-fold rotational symmetry. This means that adjacent coupling points or holes are located at an angular distance of no more than 30° from one another relative to their center in the case of at least 12-fold rotational symmetry, and that adjacent coupling points or holes are located at an angular distance of no more than 15° from one another relative to their center in the case of at least 24-fold rotational symmetry.

[0058] The previously described object is also achieved by a mounting system having the features of claim 13. Accordingly, a mounting system with a mounting device according to the invention is proposed, wherein the mounting system has the connecting component in the form of a spindle as well as an anti-rotation element and at least one securing element for axial securing, wherein a circumferential groove or a circumferential shoulder is provided on the spindle, which is geometrically designed to correspond to the securing element. In other words, the mounting system comprises different securing elements, each for axial securing and for anti-rotation. Preferably, both types of securing elements can be mounted at the same circumferential position of the mounting device. A single securing element can be provided for axial securing. Preferably, two securing elements are provided for axial securing.Optionally, three locking elements can also be provided for axial locking.

[0059] Preferably, the groove is provided circumferentially and extends orthogonally to the longitudinal direction. A circumferential groove provides the advantage that the bolt of the axial locking device can be brought into engagement with the spindle regardless of a specific rotational position. The spindle can also be easily rotated relative to the mounting device, even when a load acts on the axial locking device in the axial direction. This facilitates readjustment or adjustment of the rotational position.

[0060] Preferably, the groove is arranged at a distance from an end face or an end stop of the spindle which, viewed in the longitudinal direction, corresponds to a distance of the bore from a counter stop in the cavity. This facilitates assembly, in particular because the spindle can be easily brought into contact with the end face against a / the counter stop of the assembly device in such a way that the spindle is arranged in the correct axial position in order to provide axial locking. In this axial position, the bolt can engage tangentially with an outer circumferential surface of the spindle. Readjustment of the axial position is not necessary. The counter stop of the assembly device can also be provided by a base of the cavity or a circumferential annular or disc-shaped counter stop on the base of the cavity.

[0061] According to one variant, a shoulder is formed on the spindle, which the adjustment device (when mounted) overlaps radially. This allows the spindle to be mounted by means of the adjustment device. This shoulder can make it possible to fix the adjustment device together with one or more support arms via a lower shaft nut that secures the support arms. Installation can be facilitated in particular by securing the adjustment device before inserting the spindle into the mounting device, especially with regard to preventing it from slipping downwards.

[0062] For assembly, the mounting device can first be mounted to the ceiling. The spindle can then be inserted into the cavity of the mounting device from below. The adjustment device is preferably already arranged on the spindle and can be fastened to the mounting device. This also allows the spindle to be positioned longitudinally on the mounting device. Optionally, the spindle can also be secured to the mounting device using an axial lock before the adjustment device is attached, so that the adjustment device can be positioned in a specific rotational position without the weight of the spindle having to be absorbed by the adjustment device at the same time. This simplifies assembly or even subsequent setting of a specific rotational position.

[0063] According to one variant, the spindle shoulder has an outer diameter that is larger than the inner diameter of a passage of the adjustment device. In this configuration, the spindle can optionally also be supported in the axial direction by means of the adjustment device. The overlap in the radial direction is preferably at least 1 mm.

[0064] According to one variant, a rotation stop, in particular a key, is arranged below the shoulder, which is preferably aligned in the longitudinal direction. The rotation stop is geometrically designed to correspond to a rotation stop of the adjustment device. The rotation stop can, for example, be a key mounted in a corresponding groove on the spindle, or a cast-on key.

[0065] According to one embodiment, the mounting system comprises an anti-rotation element in the form of a bolt engaging in the axial direction and one or two locking elements in the form of latches engaging in the tangential direction, wherein the bolt and the latches are arranged adjacent to an access provided in a receptacle for the anti-rotation element. This arrangement facilitates adjustment and assembly. The tangential latch can optionally also be designed as a bolt.

[0066] The above-described object is also achieved by an adjustment device for a stand device that can be arranged in the operating room for the local positioning or relocation of a medical device, in particular by a rotational movement. The adjustment device can be arranged in a predefined rotational angle position on a connecting component of the stand device. The adjustment device is configured to have a plurality of coupling points, in particular holes or passages, each for defining a rotational position. The adjustment device is designed as an annular disc. This results in the advantages already described above.

[0067] The above-described object is also achieved by a mounting device for a stand device that can be arranged in the operating room for the local positioning or relocation of a medical device, in particular by a rotational movement, wherein the mounting device extends in a longitudinal direction along a rotation axis and has a longitudinally oriented, in particular cylindrical, cavity for receiving a rotatably mountable connecting component of the stand device, wherein the mounting device has an externally accessible receptacle for an anti-twist element for determining a rotational position, wherein the mounting device is configured to transmit a torque between the connecting component and a flange plate by means of the anti-twist element. This results in the advantages already described above.

[0068] The above-described object is also achieved by the use according to claim 14 of the mounting device according to the invention for locally positioning or relocating a medical device, in particular by a rotational movement, wherein the mounting device defines an adjustable rotational position of a connecting component of the stand device relative to a flange plate by means of which the stand device is mounted in the operating room. This results in the advantages already described above.

[0069] The invention is explained in more detail using exemplary embodiments in the following drawing figures. They show: Figure 1 shows a perspective side view of a mounting device according to an embodiment of the invention in a mounted arrangement on a stand device; Figure 2 shows a perspective sectional side view of the Fig. 1shown mounting device; Figure 3 in perspective side view an adjustment device of the Fig. 1 shown mounting device in plan view, wherein the adjustment device is arranged around a spindle of the stand device; Figure 4 in plan view from a bottom side individual components of the in Fig. 1 shown assembly device; Figure 5 in perspective side view individual components of the Fig. 1 shown mounting device; Figure 6 in perspective side view a mounting device of the in Fig. 1 shown mounting device; Figure 7 in perspective view from a bottom side which is shown in the Fig. 1 adjustment device shown; Figure 8 in perspective view from above the Fig. 7 shown adjustment device; Figure 9 in perspective view the Fig. 3 shown spindle; Figure 10 in perspective view a securing element of the Fig. 1shown mounting device; Figure 11 shows a perspective view of a mounting device according to a further embodiment of the invention in a mounted arrangement on a stand device with mounted securing elements; Figure 12 shows a perspective view of an anti-rotation element which is designed to secure a rotational position of the mounting device; Figure 13 shows a sectional side view of a further embodiment of a mounting device; and Figure 14 shows a spindle specifically for the Figure 13 shown mounting device.

[0070] In connection with the description of the following figures, reference symbols refer to the other figures if they are not explicitly explained for individual figures.

[0071] In the Figure 1a tripod device for ceiling mounting is shown. The tripod device 1 comprises a first support 2 and a second support 3, which are mounted one above the other in a swivel joint so as to be rotatable about an axis of rotation. For mounting the tripod device 1 on a (false) ceiling, the two supports 2, 3 are connected or indirectly coupled to a mounting device 10, which has an adaptable mechanism 10a in the form of an adjustable rotary coupling. The tripod device 1 can be mounted on a ceiling or false ceiling by means of a flange plate 40. The flange plate 40 has openings 41, in particular bores, through which fastening means, such as screws, can be mounted. Mounting is carried out by means of holders 50, which ensure a connection of the flange plate 40 to a mounting device 30. The mounting device 30 interacts with an adjustment device 20.The adjustment device 20 can be described as a flat ring. For this purpose, the mounting device 30 has an anti-rotation device, in particular a receptacle 38 in the form of a tubular section for receiving a securing element. A bolt or pin can be inserted through a through-hole 38.1 on an upper access surface 38.3, which bolt or pin interacts with a specific coupling point 23 of the adjustment device. Several coupling points 23 each define a specific rotation position. The coupling points 23 can be designed, for example, as holes or bores or laterally open slots or recesses.

[0072] A coordinate system indicates the horizontal and, in the case of ceiling mounting, also the radial x-direction and the vertical z-direction.

[0073] The adjusting device 20 can be mounted, for example, on an inner ring of a ball bearing arranged in the carrier 2 on the carrier 2.

[0074] In the Figure 2shows how the flange plate 40 can be connected to the mounting device 30. The flange plate 40 has a plurality of radial grooves 43 which are geometrically designed to correspond to fastening sections 33 of the mounting device 30. The flange plate 40 can be fastened to the holders 50 by means of fastening elements 90, in particular screws, in such a way that a weight force G from a connecting component 4, in particular a spindle, mounted in the mounting device 30 can be transmitted via the mounting device 30, the holders 50 and the fastening elements 90 to the flange plate 40 and thus to a ceiling or false ceiling. The spindle 4 is mounted in the cavity K formed by the mounting device 30. A relative rotation of the spindle 4 relative to the mounting device 30 is possible. The arrangement shown is mounted so as to be rotatable about a rotation axis D extending in the z-direction.The relative rotatability can be prevented by means of the adjustment device 20.

[0075] A relative axial movement or downward displacement is prevented by providing an axial locking device 11 against which the spindle 4 rests. In the example shown, the axial locking device 11 is formed by several locking elements 70, in particular latches or bolts, which are arranged in a tangential direction with respect to a rotational axis D and engage both the spindle 4 and the mounting device 30.

[0076] The mounting device 30 can be mounted in different axial relative positions (height positions) relative to the holders 50 or to the flange plate 40, namely by means of fastening elements 80, in particular screws, which engage in corresponding holes or through-bores on the respective fastening section 33 or on the respective holder 50.

[0077] In the Figure 3The spindle 4 is shown in a form in which it can be inserted from below into the cavity K of the assembly device 30. In the final position, the previously described securing elements 70 can interact with a circumferential groove 4.3. The spindle 4 is then rotatable in the groove 4.3 and axially fixed in the cavity K.

[0078] In the Figure 4 a flat underside end face 42a.1 of the flange plate 40 is shown, to which the respective holder 50 is connected with a flat upper side end face 52.b.1 (indicated in Figure 5) can come into contact. The respective holder 50 has continuous fastening means 51, in particular internally threaded bores into which screws, for example, can engage. The respective fastening section 33 comes into contact with opposite jaws 53. The jaws can be pressed against a corresponding radial flank 33.1 by means of the screws 80. Each jaw 53 has individual jaw sections 53a, 53b, which can ensure a secure or load-bearing connection of the respective holder 50 to the mounting device 30. Furthermore, the respective holder 50 has a corrugation 54, which forms an outward-facing surface at least in sections, and thanks to which the holder 50 can be bent open in a comparatively simple and flexible manner and can be mounted without any problems on the respective fastening section 33.The opposing jaws 53 define a radial cavity 55, in particular in the form of a slot, which is geometrically configured to correspond to the respective fastening section 33. The fastening sections 33 extend radially outward from a cylindrical outer surface 31 and further develop this outer surface. The mounting device 30 has an inner surface 37 that is at least partially cylindrical, by which the cavity K is defined or delimited in the radial direction.

[0079] In the Figure 5The mounting device 30 is shown from the underside in a state mounted on the flange plate 40. Both the receptacle 38 for an anti-rotation device and the individual fastening sections 33 define a lower end face 32a, which is formed by a flat lower end surface 32a.1. The adjustment device can come into contact with this end surface 32a.1. The mounting device 30 can be designed, for example, as an extruded profile. One or more feedthroughs 36, which form part of the axial locking device 11, are introduced into the outer surface of the mounting device 30, in particular in the tangential direction.

[0080] In the Figure 6The mounting device 30 is shown in isolation. The mounting device 30 is designed as a continuous cast profile and has opposite end faces 32. Just like the lower end face 32a, an upper end face 32b is formed by a flat upper end surface 32b.1. Along each fastening section 33, a plurality of holes or fastening means 34 are provided, e.g., threaded holes or bores. The passages 36 each define a support surface 36.1, on which the Fig. 2 shown securing element 70 can come into contact. The support surface 36.1 can also be formed at least partially by a chamfer, edge or milled recess 37.1 formed on the inner surface 37 (cf. Fig. 2). A force flow path of a weight to be transmitted runs through these support surfaces 36.1. The feedthroughs 36 border radially on the inside on at least two of the fastening sections 33. Each fastening section 33 has opposite, in particular parallel, radial flanks 33.1a, 33.1b. The anti-twist device 38 or the receptacle is designed in the form of a securing tube section. The anti-twist device 38 has a lower tubular receptacle section 38a. The lower receptacle section 38a can be subdivided, in particular by a slot, which can enable additional securing of a / the anti-twist element by means of a spring pin. The receptacle 38 has an access 38.2 in the form of a milled recess. At this access or in the region of this access, a bolt can be inserted into the through-bore 38.1 on the lower receptacle section 38a, namely from above into a hole on the lower end face 32a.1 arranged adjustment device.

[0081] In the Figure 7 The adjustment device 20 is shown from the underside. The adjustment device 20 can be described as a flat ring. The spindle (not shown) can be guided through a passage 21. On an inner surface 27, a rotation stop 22 (optionally also in the function of a centering device) is arranged, in particular in the form of a spring, which is geometrically designed to correspond to a corresponding groove of the spindle. Preferably, two springs 22 are provided, as in Figure 8shown. The springs 22 are arranged on an upper edge of the adjustment device 20. On the underside, the adjustment device 20 has a protruding edge 28, which, thanks to a comparatively large axial extension, facilitates exact alignment or centering relative to the spindle. On the underside of the adjustment device 20, recesses 26 or radial slots are provided, into which a fitter can engage with a tool (e.g., a screwdriver), in particular from the radial outside, in order to rotate the adjustment device 20 and thus the spindle. In this way, the relative rotational position can be adjusted, in particular without dismantling any casing or housing. As already mentioned with regard to Fig. 1As described, the adjustment device has a plurality of coupling points 23, which are geometrically designed to correspond to a means for securing against rotation, in particular a bolt. The coupling points 23 are arranged on a partial circle, in particular concentrically around a center point of the adjustment device 20. According to a variant, the coupling points 23 are designed as holes and have at least approximately the same diameter as the Figure 6 through hole shown 38.1.

[0082] In the Figure 8 The adjustment device 20 is shown in a plan view from above. The adjustment device 20 has an annular support surface 24, which can also be formed at least partially by the springs 22. The support surface 24 is geometrically corresponding to a radially projecting edge 4.4 ( Figure 9) of the spindle. Furthermore, fastening means for a casing or a housing are provided on an outer circumference of the adjustment device 20. The fastening means are in the form of slots 25 which extend in the radial direction. This configuration facilitates attachment from above or from the side in the radial direction. As shown, the adjustment device 20 is flat-ring-shaped and, with regard to the arrangement of the coupling points 23 or holes, has at least 12-fold rotational symmetry, in the exemplary embodiment shown, exactly 24-fold rotational symmetry. This means that adjacent coupling points 23 or holes, with regard to their center, are at an angular distance a of at most 30° from one another, and that adjacent coupling points orHoles are located at an angular distance a of 15° from each other relative to their center in the illustrated 24-fold rotational symmetry.

[0083] In the Figure 9The spindle 4 is shown in detail. The spindle 4 has two axial grooves 4.1 arranged longitudinally and opposite one another. Each axial groove 4.1 extends to a shoulder or radially projecting edge 4.4, so that springs can be pushed into the grooves 4.1 up to the edge 4.4. The spindle 4 also has two recesses 4.2 which are axially spaced from one another and which pierce an outer surface 4.5. A cable, in particular a slip ring cable, can be guided through each of the recesses 4.2. Above the edge 4.4, a centering surface section 4.5a is provided, by means of which the spindle 4 can be centered in the cavity K. The edge 4.4 defines an annular bearing surface 4.4a, against which the adjustment device can come into contact. The circumferential groove 4.3 defines an annular bearing surface 4.3a, via which the weight force of a tripod device can be transferred from the spindle 4 to the axial securing device 11 (not shown).

[0084] In the Figure 10 A locking element 70 in the form of a bolt is shown in detail. The bolt 70 has an upper support surface 71, on which the Figure 9shown support surface 4.3a can come into contact. Furthermore, the bolt 70 has an underside contact surface 72, curved in the present example, by means of which the bolt 70 can be mounted in the passage 36 on the mounting device 30. The contact surface 72 has a curvature with a predefined radius of curvature, whereby a low notch effect can be ensured. The curved contact surface 72 can ensure a low surface pressure. The bolt 70 has a U-shaped cross-sectional surface 75, which has essentially the same geometry along the entire length of the bolt 70. A respective free end of the bolt 70 has a shoulder 73, 74, which enables the bolt 70 to be secured in the passage 36. One of the shoulders is smaller than the other.

[0085] The shoulder 73 is designed as an assembly bevel and can prevent the latch 70 from slipping out. The shoulder 74 also prevents slipping out. The shoulder 74 is preferably designed so high that the latch 70 cannot be pushed through the corresponding opening, but is blocked at the shoulder 74.

[0086] In the area of ​​one of the two free ends, the bolt has a through hole 76 to which the bolt 70 can be secured, in particular by means of a spring pin.

[0087] In the Figure 11 a mounting device 10 is shown in which an anti-rotation element 60 is secured by means of a spring pin 65 on the mounting device 30 in the engagement position with the adjustment device 20. As can be seen from Figure 12As can be seen, the spring pin 65 engages in a groove 61 of the bolt or anti-rotation element 60. The two latches 70 are also secured by means of a corresponding spring pin 65, wherein the spring pins each engage in the corresponding through-hole of the respective latch 70.

[0088] In the Figures 13 and 14shows how assembly can be facilitated by means of two fitting surfaces 37a, 37b and corresponding surface sections 4.5a, 4.5b on the spindle. The spindle 4 has a shoulder 4.6 on which an O-ring 5 is arranged. A corresponding shoulder 39 is formed on the mounting device 30 for this purpose. The second fitting surface 37b has an inner diameter which is smaller than that of the first fitting surface 37a. In this way, the spindle 4 can be mounted without the risk of tilting, and on the other hand, the bearing can be carried out in a particularly stable manner on surface sections 4.5a, 4.5b that are widely spaced from one another. List of reference symbols

[0089] 1 Tripod device, in particular ceiling tripod device 2 (First) support or support arm 3 Second support or support arm 4 Connecting component, in particular spindle 4.1 Anti-rotation device, in particular groove in connecting component, preferably axial groove introduced in the longitudinal direction 4.2 Recess 4.3 Circumferential groove 4.3 Ring-shaped support surface 4.4 Shoulder or radially protruding edge 4.4 Ring-shaped bearing surface 4.5 Outer surface 4.5a Centering surface section or first fitting surface 4.5b Second fitting surface 4.6 Groove for O-ring at the free end of the spindle 5 O-ring 10Mounting device 10aAdjustable mechanism, in particular adjustable rotary coupling 11Axial locking device 20Adjustment device, in particular flat ring 21Feedthrough 22Rotation stop, in particular spring 23Coupling point for respective rotation position, in particular hole or bore 24Annular support surface 25Fastening means for cladding, in particular slot on the upper side 26Recess, in particular on the underside, accessible from the radial outside 27Inner surface 28Edge or centering 30 Mounting device, in particular a base body designed as a ceiling pipe, preferably in the form of an extruded profile 31 Outer surface 32 End face 32a Lower end face 32a.1 Flat lower end face 32bo Upper end face 32b.1 Flat upper end face 33 Fastening section, in particular web 33.1 Radial flank on the fastening section 33.1a, 33.1b Opposite, in particular parallel radial flanks 34 Fastening means, in particular bore or threaded bore 36 Feedthrough, in particular in tangential or radial direction 36.1 Support surface 37 Inner surface, in particular at least partially cylindrical 37a First fitting surface 37b Second fitting surface 37.1 Chamfer, edge or milled recess 38 Receptacle for anti-rotation element, in particular securing tube 38a Lower receiving section, in particular tubular 38.1Through hole, especially in the axial direction 38.2Access, especially milling 38.3Top access surface (interface) 39Paragraph 40Flange plate 41Opening, in particular bore 42a.1Flat underside end face 43Radial groove 50Holder, in particular in the form of a continuous cast profile 51Fastening means, in particular opening, preferably internally threaded bore 52b.1Flat upper end face 53Opposite jaws 53a, 53bIndividual jaw sections of a jaw 54Corrugation 55Radial cavity 60Anti-rotation element, in particular bolt 61Groove 65 spring pins 70Securing element for axial locking, in particular latch 71Top contact surface 72Bottom contact surface 73Shoulder at a free end 74Shoulder at a free end 75Cross-sectional area 76Through hole 80Fastening element on holder, especially screw 90Fastening element on flange plate, in particular screw aAngular distance CCenter DRotation axis GGravity KCavity xRadial direction or horizontal direction yTransverse direction zLongitudinal direction or axial direction or vertical direction

Claims

1. Mounting device (10) for a stand device (1) for arranging in the operating theatre and for locally positioning or displacing a medical-technical device in the operating theatre, in particular by means of a rotational movement, comprising - a mounting unit (30), which extends in a longitudinal direction along an axis of rotation (D), and has a cavity (K) which is aligned in the longitudinal direction, for accommodating a - in view of the mounting unit (30) around the rotation axis (D) - rotatably supportable connecting member (4) of the stand device; - an adjustment means (20) for rotatably fixedly arranging said connecting member (4) in a predefined position of rotation relative to said mounting unit (30), wherein the adjustment means (20) are configured to be connectable with connecting member (4) in a rotatably fixed manner; and - a rotational lock element (60); characterized in that the mounting device (10) forms a rotational coupling (10a) adjustable around the axis of rotation (D) for supporting the connecting member (4) on the mounting unit (30), wherein the adjustment means (20) is formed of an annular geometry or is an annular disk, wherein the adjustment means (20) has a plurality of coupling points (23) formed as openings or passages and arranged on a pitch circle, each coupling point for defining one of a plurality of predefined positions of rotation of the rotational coupling, wherein the mounting unit (30) comprises a retainer (38) for the rotational lock element (60), and the rotational lock element (60) is configured to cooperate with a specific coupling point (23) of the plurality of coupling points (23) of the adjustment means (20) to define one of the predefined positions of rotation.

2. Mounting device (10) according to claim 1, wherein the adjustable rotational coupling (10a) is formed by the adjustment means (20) and the mounting unit (30), wherein the adjustment means (20) can be positioned in a predefined position of rotation around the axis of rotation (D) relative to the mounting unit (30) and is supportable in a rotationally fixed manner.

3. Mounting device (10) according to claim 1 or 2, wherein the adjustment means (20) has a rotational stop (22), in particular a groove or a spring, which is geometrically designed to correspond to a rotational stop (4.1), in particular a groove or spring, arranged on the connecting member.

4. Mounting device (10) according to one of the preceding claims, wherein the retainer (38) is a retainer tubular retainer (38) for a rotational lock element (60), and / or the retainer (38) is arranged on an outer side, in particular an outer lateral surface (31) of the mounting unit (30), or forms the outer lateral surface (31) at least in sections.

5. Mounting device (10) according to claim 4, wherein the retainer (38) has an access (38.2), in particular an access from radially outside, wherein the access (38.2) is preferably in the form of a cut-out, and wherein the access (38.2) preferably has an upper access surface (38.3) on the upper side, against which a rotational lock element (60) can be brought into abutment, in particular in a predefined axial position.

6. Mounting device (10) according to one of the preceding claims, wherein the mounting device (10) has an axial lock (11), by means of which the connecting member can be supported on the mounting unit (30) in a predefined axial position, in particular rotatable relative to the mounting unit (30), wherein the mounting unit (30) is preferably designed to hold and rotatably support the connecting member in a predefined axial relative position, wherein preferably a chamfer, edge or milled recess (37.1) is provided on an inner lateral surface (37) of the mounting unit (30) surrounding cavity (K).

7. Mounting device (10) according to claim 6, wherein the axial lock (11) comprises a passage (36) arranged tangentially on the mounting unit (30), preferably at two points, and which passage passes through an outer lateral surface (31) of the mounting unit (30) and which intersects a / the inner lateral surface (37) of the mounting unit (30), wherein preferably the passage (36) forms a supporting surface (36.1), which is configured to transfer a force exerted by the connecting member (4) to the mounting unit (30).

8. Mounting device (10) according to claim 6 or 7, wherein the axial lock (11) comprises at least one securing element (70), in particular a latch or bolt, which is designed and configured to transfer the weight of the stand device (1) from the connecting member (4) to the mounting unit (30), wherein the securing element (70) can preferably be arranged tangentially to the mounting unit (30) and is designed geometrically corresponding to the passage (36), in particular on a lower side contact surface (72).

9. Mounting device (10) according to one of the preceding claims, wherein the mounting device has two mating faces (37a, 37b) for forming a support of the connecting member (4) relative to the mounting unit (30) around the axis of rotation (D) with surface portions (4.5a, 4.5b) corresponding to the mating faces (37a, 37b) on the connecting member (4), wherein the second mating face (37b) has an inner diameter, which is smaller than the one of the first mating face (37a).

10. Mounting device (10) according to claim 1, wherein the retainer (38) is disposed on an outer lateral surface (31) of the mounting unit (30), said retainer (38) having an access (38.2) from radially outside, wherein the retainer (38) has an upper access surface (38.3), against which the rotational lock element (60) can abut, wherein the adjustment means (20) has a groove or spring which corresponds geometrically to a rotational stop (4.1) arranged on the connecting member (4), wherein the mounting device (10) has an axial lock (11) which comprises a milled recess (37.1) provided on an inner lateral surface (37) of the mounting unit (30) surrounding the cavity (K), wherein the axial lock (11) comprises a passage (36) arranged tangentially on the mounting unit (30), which passes through an outer lateral surface (31) of the mounting unit (30) and intersects the inner lateral surface (37).

11. Mounting device (10) according to one of the preceding claims, wherein the adjustment means (20) is of flat ring design and, with respect to the arrangement of the coupling points (23), has an at least 12-fold rotational symmetry, in particular an at least 24-fold rotational symmetry.

12. A mounting device (10) according to one of the claims 1 to 11, wherein the mounting unit (30) has a retainer (38) being accessible from outside for a rotational lock element (60) for defining a position of rotation, wherein the mounting unit (30) is configured to transfer a torque between the connecting member (4) and a flange plate (40) by means of the rotational lock element (60).

13. Mounting system having a mounting device (10) according to one of the preceding claims, wherein the mounting system has the connecting member (4) in the form of a spindle, wherein an axial groove (4.1) is formed on the spindle on its outer surface, which is formed geometrically corresponding to a rotational stop (22) formed on the adjustment means (20).

14. Use of a mounting device (10) according to claim 12 on a stand device (1) arranged in the operating theatre for local positioning or displacing a medical-technical device, in particular by a rotational movement, wherein the mounting device (10) defines an adjustable position of rotation of a connecting member (4) of the stand device (1) relative to a flange plate (40) by means of which the stand device is mounted in the operating theatre.