Clamping device for fixing a medical device on a support

Abstract

A clamping device for fixing a medical device on a support, the clamping device comprising: a body having a first jaw; an adjusting element connected to a second jaw and capable of being adjusted relative to the body along a longitudinal axis to establish a clamping connection with the support between the first jaw and the second jaw; and a locking mechanism for locking the adjusting element in a longitudinal position relative to the body. In this document, the locking mechanism comprises a coupling element coupled to the adjusting element and a locking element coupled to the coupling element, wherein the adjusting element is capable of rotating around the longitudinal axis so as to move the coupling element, and the locking element is displaced relative to the adjusting element by moving the coupling element so as to engage the locking element with the adjusting element to lock the adjusting element in its current longitudinal position, or to disengage the locking element from the adjusting element so as to unlock the adjusting element to allow the adjusting element to move along the longitudinal axis.

Description

Technical Field

[0001] The invention relates to a clamping device for fixing a medical device on a support and to a medical device. Background Art

[0002] Medical devices, such as infusion devices for administering medical fluids such as drugs or nutrient solutions for enteral feeding of patients to patients, can be arranged, for example, on a support such as a rack to place the medical device at the patient's bedside in order to, for example, perform an infusion. To this end, if the medical device is not placed on a rack for forming an organized stack of medical devices, the medical device can be fixed to the rods of the rack by using clamping devices for forming a clamping connection with the rods.

[0003] This type of clamping device includes: a body having a first jaw; an adjusting element connected to the second jaw and capable of being adjusted relative to the body along a longitudinal axis to establish a clamping connection between the first jaw and the second jaw with a support member such as a rod; and a locking mechanism for locking the adjusting element in a longitudinal position relative to the body.

[0004] Such a clamping device should generally form a secure and reliable connection with the support, so that the medical device by means of the clamping device can be securely fastened to the support. At the same time, the clamping device should be easy to operate, so that the clamping connection can be established in a fast and intuitive manner.

[0005] In this context, in order to form a clamping connection, the adjustment element is adjusted relative to the body of the clamping device so that the second jaw arranged on the adjustment element approaches the first jaw formed on the body to clamp a support such as a rod between the first jaw and the second jaw to form the clamping connection. In this regard, the operation of the adjustment element should be easy and comfortable, thereby avoiding the user having to expend much effort to form the clamping connection. Summary of the invention

[0006] The object of the present invention is to provide a clamping device for fixing a medical device on a support and a medical device having such a clamping device, which allows an easy and comfortable production of a reliable clamping connection with the support for fastening the medical device to the support.

[0007] This object is achieved by means of a clamping device of the present invention including the features of the main technical solution.

[0008] Therefore, the locking mechanism includes a coupling element connected to the adjusting element and a locking element connected to the coupling element, wherein the adjusting element is capable of rotating about the longitudinal axis so as to move the coupling element, and the locking element is displaced relative to the adjusting element by moving the coupling element so as to engage the locking element with the adjusting element to lock the adjusting element in its current longitudinal position, or to disengage the locking element from the adjusting element so as to unlock the adjusting element to allow the adjusting element to be moved along the longitudinal axis.

[0009] The clamping device comprises an adjusting element, which is usually movable along a longitudinal axis so as to bring a second jaw arranged on the adjusting element closer to a first jaw formed on the body of the clamping device. Once the clamping connection is established, the adjusting element can be locked in its currently assumed longitudinal position relative to the body by means of a locking mechanism. To this end, the locking mechanism comprises a locking element, which can be engaged with the adjusting element so that in the locked position, the locking element holds the adjusting element in place and prevents longitudinal movement of the adjusting element relative to the body. The locking element can be disengaged from the adjusting element, making longitudinal movement of the adjusting element possible, thereby allowing a quick adjustment of the adjusting element to establish a clamping connection with the support or for releasing the clamping device from the support.

[0010] The locking element is engaged with the adjusting element or disengaged from the adjusting element by rotating the adjusting element. Thus, the user can actuate the clamping device by acting on the adjusting element, wherein, when the locking element is in its unlocked position, the adjusting element can be moved longitudinally relative to the body in order, for example, to bring a second jaw arranged on the adjusting element closer to a first jaw formed on the body for establishing a clamping connection, and once the clamping connection has been established, the adjusting element can then be rotated in order to lock the adjusting element in place, so that the clamping connection is fixed and the clamping device is securely fastened to the support.

[0011] Adjustment of the adjusting element thus becomes intuitive, easy and fast.

[0012] In order to adjust the adjusting element longitudinally relative to the body, the user can simply move the adjusting element longitudinally relative to the body when the locking element is in its unlocked position. In order to establish the locking of the adjusting element in the currently assumed longitudinal position, the user can rotate the adjusting element so that the locking element engages with the adjusting element. The locking here can take place by rotating the adjusting element about the longitudinal axis in a first rotational direction for engaging the locking element with the adjusting element.

[0013] Conversely, in order to unlock the adjusting element, the adjusting element can be rotated about the longitudinal axis in a second rotational direction opposite to the first rotational direction in order to disengage the locking element from the adjusting element and in this way unlock the adjusting element. Thus, in order to unlock the adjusting element, an opposite rotational movement is required (compared to the locking operation), which is intuitive for the user and allows the adjusting element to be freely slidable again along the longitudinal axis when unlocking the adjusting element.

[0014] In one embodiment, the rotation of the adjusting element causes the movement of the coupling element, which causes the locking element to shift to engage or disengage with the adjusting element. The movement of the locking element here can be generally radial with respect to the longitudinal axis along which the adjusting element extends. The locking element thus moves in a plane perpendicular to the longitudinal axis and engages or disengages with the adjusting element in a generally radial direction.

[0015] In one embodiment, the adjusting element comprises an external thread for engaging with the locking element. The locking element in turn comprises a thread, so that when the locking element engages with the adjusting element, a threaded connection is formed between the adjusting element and the locking element, so that the longitudinal movement of the adjusting element is prevented. The adjusting element here can have the shape of a spindle extending along the longitudinal axis, and the external thread extends substantially along the length of the adjusting element, so that the locking of the adjusting element can be established over a large part of the adjusting element, for example, the locking of the adjusting element can be established over substantially the entire length of the adjusting element.

[0016] In one embodiment, the coupling element is arranged on the adjusting element and is frictionally connected to the adjusting element. When the adjusting element rotates around the longitudinal axis, the friction connection between the coupling element and the adjusting element causes the coupling element to be carried along with the adjusting element. Therefore, when the adjusting element rotates, the coupling element moves together around the longitudinal axis, which causes the displacement of the locking element due to the coupling of the coupling element to the locking element.

[0017] The friction connection here can be such that the rotation of the adjusting element in the first rotational direction towards the locking position of the locking element causes the coupling element to be brought along until the locking element engages with the adjusting element and thus locks the adjusting element in longitudinal motion. Once the locking element engages with the adjusting element, the coupling element can be held in place so that further movement of the adjusting element in the first direction occurs under the friction between the clamping element and the adjusting element. Subsequently, when rotating in the second rotational direction, the adjusting element drives the coupling element to rotate together until the locking element has reached a completely disengaged position and the adjusting element is thus unlocked. Further rotation of the adjusting element in the second direction then occurs under the friction between the coupling element and the adjusting element, the coupling element being held in place and no longer being brought along with the adjusting element when further rotated.

[0018] In one embodiment, the coupling element has the shape of a ring extending around the adjusting element. The ring is fitted on the adjusting element so that it is in frictional contact with the adjusting element. By fitting the ring on the adjusting element, the friction between the adjusting element and the coupling element can be set here so that the coupling element is reliably entrained when the adjusting element is rotated between the locking position and the unlocking position of the locking element.

[0019] In one embodiment, the locking element is connected to the coupling element in a pivotable manner about a pivot axis. While the coupling element is, for example, arranged on the adjusting element, the locking element can be pivoted relative to the coupling element, the pivot axis being radially displaced relative to the longitudinal axis and thus eccentric relative to the longitudinal axis. When the coupling element is moved, the locking element is displaced relative to the longitudinal axis by pivoting the locking element about the pivot axis in order to engage or disengage the locking element from the adjusting element.

[0020] In one embodiment, one or both of the coupling element and the locking element are axially fixed relative to the body along the longitudinal axis. For example, both the coupling element and the locking element can be received in a cavity of the body so that the coupling element of the locking element is axially held in place within the cavity, so that longitudinal movement of the adjustment element along the longitudinal axis is not transmitted to the coupling element and the locking element, but the coupling element and the locking element are held in place when the adjustment element is longitudinally moved relative to the body.

[0021] In one embodiment, when the locking element is disengaged from the adjusting element, the adjusting element can be slidably moved relative to the coupling element along the longitudinal axis. Thus, when the locking mechanism is unlocked, the adjusting element can be freely moved relative to the coupling element, so that in order to establish a clamping connection, the adjusting element and the second jaw arranged thereon can be approached towards the first jaw formed on the body, or in order to release the clamping connection, the adjusting element can be moved away from the first jaw of the body.

[0022] In one embodiment, the locking element is operatively connected to a cam element arranged on the body. The cam element is used to guide the locking element relative to the adjusting element when the adjusting element is rotated about the longitudinal axis. The cam element is fixedly arranged on the body and operatively connected to the locking element so that when the coupling element moves, the locking element is caused to shift between its unlocked position and its locked position.

[0023] For example, the cam element engages with a recess formed on the locking element. The recess may, for example, be bounded by a surface along which the cam element slides when the coupling element is moved when the adjusting element is rotated. Depending on the direction of rotation of the adjusting element, the locking element is thus displaced radially inwards to engage with the adjusting element or radially outwards to disengage from the adjusting element.

[0024] In one embodiment, the coupling element is biased relative to the body towards a rest position, which corresponds to an unlocked position of the locking element (i.e. a position of the locking element in which the locking element is disengaged from the adjusting device). The spring element can in particular be used to securely hold the coupling element and the locking element in the unlocked position. However, in the locked state, the spring element may generally have a limited function, since the adjusting element is fastened relative to the coupling element and the locking element in the locked position of the adjusting element due to the friction between the different components.

[0025] This type of clamping device can be used, for example, on a medical device for administering a medicinal fluid to a patient, such as an infusion device in the shape of a volumetric (peristaltic) infusion pump or a syringe infusion pump. However, the medical device can also be a rack for holding multiple infusion devices, which rack must be fastened to a support of a bracket to place the rack at the patient's bedside. In general, a clamping device of the type described herein can be used on any medical device that may need to be arranged on a support of a bracket or the like, for example, on a medical device used in a healthcare environment, such as a hospital. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The basic idea of ​​the invention will be described in more detail below with respect to the embodiments shown in the accompanying drawings. In the drawings:

[0027] Figure 1 A view showing an embodiment of a medical device in the shape of an infusion device;

[0028] Figure 2 An embodiment of a subgroup of clamping devices for establishing a clamping connection with a support is shown;

[0029] Figure 3A A cross-sectional view showing an embodiment of a clamping device in a released state before establishing a clamping connection with a support member;

[0030] Figure 3B Shown along the basis Figure 3A A cross-sectional view of line BB;

[0031] Figure 3C Shown along the basis Figure 3A A cross-sectional view of line AA;

[0032] Figure 4A Shows Figure 3A , a sectional view after the adjustment element and the jaws arranged on the adjustment element are approached toward the support to establish the clamping connection;

[0033] Figure 4B Shows Figure 4A A cross-sectional view of the arrangement along line BB;

[0034] Figure 4C Shown along the basis Figure 4A A cross-sectional view of line AA;

[0035] Figure 5A Shows Figure 4A , a cross-sectional view after locking the adjustment element in its longitudinal position;

[0036] Figure 5B Shown along the basis Figure 5A A cross-sectional view of line BB;

[0037] Figure 5C Shown along the basis Figure 5A A cross-sectional view of line AA;

[0038] Fig. 6A Shows Figure 5A , a cross-sectional view when the adjusting element is unlocked;

[0039] Figure 6B Shown along the basis Fig. 6A A cross-sectional view of line BB;

[0040] Figure 6C Shown along the basis Fig. 6A A cross-sectional view of line AA;

[0041] Fig. 7A Shows Fig. 6A , a cross-sectional view after unlocking the adjusting element;

[0042] Figure 7B Shown along the basis Fig. 7A A cross-sectional view of line BB;

[0043] Figure 7C Shown along the basis Fig. 7A A cross-sectional view of line AA;

[0044] Fig. 8A Shows Fig. 7A A cross-sectional view after longitudinal displacement of the adjusting element;

[0045] Figure 8B Shown along the basis Fig. 8A A cross-sectional view of line BB of ; and

[0046] Figure 8C Shown along the basis Fig. 8A Cross-sectional view along line AA. DETAILED DESCRIPTION

[0047] Reference Figure 1The medical device 1 may have the shape of an infusion device for administering a medical fluid such as a drug or a nutrient solution to a patient. The medical device 1 may have to be fastened to a bracket having a support in the shape of a rod 3 so that the medical device 1 can be arranged, for example, at the patient's bedside to perform an infusion operation.

[0048] The medical device 1 generally comprises a housing 10, which encloses a pumping mechanism, for example, for performing a pumping action to deliver a medical fluid to a patient. A clamping device 2 can be fixed to a rear side 100 of the housing 10, the clamping device 2 being configured to establish a clamping connection with the rod 3 so as to secure the medical device 1 to the rod 3.

[0049] Now refer to Figure 2 and FIG. 3A to FIG. 3C In one embodiment, the clamping device 2 comprises an adjusting element 21 arranged on the body 20 of the clamping device 2, the adjusting element 21 carrying a jaw 210 arranged on the end 211 of the adjusting element 21, for establishing a clamping connection with the rod 3 between the jaw 210 and another jaw 200 formed on the body 20, such as from Figure 3A visible.

[0050] The body 20 may be fixed to the rear side 100 of the housing 10 of the relevant medical device 1 by means of a screw-shaped fixing element 201 .

[0051] The clamping device 2 will be used to establish a clamping connection between the jaws 200, 210 and the rod 3 by approaching the jaws 210 arranged on the adjustment element 21 towards the jaws 200 along the longitudinal axis L. In this context, the clamping device 2 will allow a fast establishment of the clamping connection and a comfortable, intuitive operation by the user.

[0052] exist Figure 2 In the embodiment of the present invention, the adjusting element 21 has the shape of a spindle and comprises an external thread 229. The jaws 210 are rotatably arranged on the end 211 of the adjusting element 21. The head 212 at the end opposite to the end 211 serves as a handle of the adjusting element 21, allowing the user to act on the adjusting element 21 to move the adjusting element 21 relative to the body 20.

[0053] As from Figure 3A As can be seen in the figure, the adjustment element 21 is slidably arranged in a bearing opening 204 formed on the body 20 of the clamping device 2. Therefore, the adjustment element 21 can be moved through the bearing opening 204 along the longitudinal axis L to move the jaw 210 toward the jaw 200 formed on the body 20, or to move the jaw 210 away from the jaw 200.

[0054] The clamping device 2 comprises a locking mechanism 22 substantially formed by a coupling element 220 and a locking element 224 received in the cavity 202 of the body 20 such that the coupling element 220 and the locking element 224 are held axially in position relative to the body 20 .

[0055] As from Figure 2 As can be seen in FIG. 2 , the coupling element 220 has the shape of a ring which is arranged on the adjustment element 21 and extends around the adjustment element 21 , wherein the coupling element 220 is frictionally connected to the adjustment element 21 , as will be explained further below.

[0056] The locking element 224 has the shape of a so-called split nut, which is coupled to the coupling element 220 by means of a pivot axis 223 which allows a pivoting movement of the locking element 224 relative to the coupling element 220 .

[0057] At the side of the adjustment element 21 pointing radially inwards, in one embodiment, the locking element 224 is formed with an internal thread adapted to engage with an external thread 229 of the adjustment element 21. By means of the locking element 224, a locking of the adjustment element 21 in the currently assumed longitudinal position can be established, wherein the locking element 224 can be unlocked from the adjustment element 21 in order to allow a free sliding movement of the adjustment element 21 along the longitudinal axis L to bring the jaw 210 closer to the jaw 200 or to move the jaw 210 away from the jaw 200.

[0058] As from Figure 3B It can be seen that the coupling element 220 comprises a bearing portion 221 coupled to a pivot axis 223. The spring element 222 acts on the bearing portion 221 in order to move the coupling element 220 towards the pivot axis 223. Figure 3B The position bias shown in .

[0059] As from Figure 3C It can be seen that the locking element 224 comprises a recess 225 in which the cam element 203 fixedly arranged on the body 20 is received. The locking element 224 is coupled to the coupling element 220 by means of the pivot axis 223, wherein the locking element 224 is axially displaced relative to the coupling element 220, such as from Figure 3A and Figure 2 Visible. Figure 3C Corresponding to the position of the cam element 203, the cam element 203 is used to guide the locking element 224 to present a locked position or an unlocked position according to the movement of the coupling element 220.

[0060] The coupling element 220—having an annular shape and fitted on the adjustment element 21 so that the coupling element 220 is frictionally connected to the adjustment element 21—is used to transmit the movement of the adjustment element 21 to the locking element 224 for displacing the locking element 224 relative to the adjustment element 21 to lock or unlock the locking mechanism 22. The friction connection between the coupling element 220 and the adjustment element 21 here enables the adjustment element 21 to be freely movable (under friction) relative to the coupling element 220 along the longitudinal axis L, wherein—when the adjustment element 21 is longitudinally moved along the longitudinal axis L—the coupling element 220 is axially held in place within the cavity 202 of the body 20.

[0061] like FIG. 4A to FIG. 4C As shown in , this allows slidably moving the adjustment element 21 in the longitudinal movement direction A1 to approach the jaw 210 towards the jaw 200 in order to establish a clamping connection of the jaws 200 , 210 with the rod 3 received between the jaws 200 , 210 .

[0062] As from Figure 4C It can be seen that the locking element 224 is in its unlocked position during the sliding movement of the adjustment element 21. Therefore, the locking element 224 is disengaged from the adjustment element 21 and therefore does not block the longitudinal movement of the adjustment element 21.

[0063] As from Figure 4C It can also be seen that in the unlocked position the cam element 203 rests at the end 228 of a recess 225 formed on the locking element 224 .

[0064] As from Figure 4B It can be seen that the spring element 222 serves here to bias the coupling element 220 towards the unlocked position and to hold the coupling element 220 in place in a stable manner.

[0065] Once the desired position of the adjustment element 21 for establishing the clamping connection is reached, the adjustment element 21 can be rotated in the first rotational direction A2, e.g. FIG. 5A to FIG. 5C It can be seen that the adjusting element 21 is locked in its currently assumed longitudinal position. When the adjusting element 21 is rotated along the first rotational direction A2, the coupling element 220 moves along the rotational direction A2 together, such as from Figure 5B As can be seen, the locking element 224 is also caused to move together. The movement of the locking element 224 is caused by the coupling with the coupling element 220 via the pivot axis 223 and causes the cam element 203 to slide in the recess 225. The cam element 203 acts on the locking element 224 via the locking surface 226 formed on the recess 225 in this way, as can be seen from the Figure 5CThe locking element 224 is thus moved radially inwards relative to the longitudinal axis L so as to engage with the adjustment element 21 , so that the adjustment element 21 is locked in its current longitudinal position.

[0066] Thus, the user can lock the adjusting element 21 in place by acting on the head 212 of the adjusting element 21. This can be done in a fast and intuitive manner, the longitudinal movement of the adjusting element 21 and the rotation of the adjusting element 21 being possible in a single and intuitive handling action of the user.

[0067] Once the locking element 224 is threadedly engaged with the adjusting element 21 , further movement of the adjusting element 21 in the rotational direction A2 does not cause the coupling element 220 to be further entrained in the rotational direction A2 . This may allow the clamping connection to be tightened by screwing the adjusting element 21 further into clamping engagement with the rod 3 .

[0068] In order to drive the coupling element 220 along the rotation direction A2 , the friction force between the coupling element 220 and the adjustment element 21 is greater than the biasing force of the spring element 222 .

[0069] To release the clamp connection, e.g. FIG. 6A to FIG. 6C and 7A to 7C It can be seen that the user can act on the head 212 and rotate the adjustment element 21 in a second rotational direction A3 opposite to the first rotational direction A2. In this way, the coupling element 220 is again driven, but now in the opposite direction relative to the locking operation, resulting in the locking element 224 also moving in the rotational direction A3, as from Figure 6C This causes the locking element 224 to move relative to the cam element 203 (the cam element 203 is fixed to the body 20), so that the cam element 203 abuts against the guide surface 227 opposite to the locking surface 226 of the recess 225 and is guided toward the end 228 of the recess 225, as shown in FIG. FIG. 6C to FIG. 7C This causes the locking element 224 to move radially outward, so that the locking element 224 begins to disengage from the adjustment element 21. The adjustment element 21 is thus unlocked.

[0070] Thus, the adjustment element 21 can be moved longitudinally along the longitudinal axis L to, for example, move the jaws 200, 210 apart from each other, such as from FIG. 8A to FIG. 8C in order to release the clamping connection.

[0071] Since the displacement movement of the locking element 224 can be implemented by acting on the adjusting element 21 itself, the operation of the clamping device 2 for producing the clamping connection and for releasing the clamping connection is simple and intuitive, while allowing a rapid adjustment of the adjusting element.

[0072] In the locked position, the adjustment element 21 here is held securely in place, thus allowing a fixed and reliable connection to the rod 3 .

[0073] The basic idea of ​​the present invention is not limited to the above-described embodiments, but can be implemented in completely different ways.

[0074] The medical device may be an independent infusion device or a rack for carrying multiple infusion devices. However, the medical device may also be any other medical device that should be fixed on a support, such as a rod of a stand or other placement device in a medical environment.

[0075] Reference numerals list

[0076] 1 Medical Devices

[0077] 10 Shell

[0078] 100 rear side

[0079] 2 Clamping device

[0080] 20Ontology

[0081] 200 jaws

[0082] 201 fixed element

[0083] 202 cavity

[0084] 203 Cam element

[0085] 204 bearing opening

[0086] 21Regulator

[0087] 210 jaws

[0088] 211 end

[0089] 212 Head

[0090] 22 Locking mechanism

[0091] 220 connecting element (ring element)

[0092] 221 bearing part

[0093] 222 Spring element

[0094] 223 pivot axis

[0095] 224 locking element

[0096] 225 concavity

[0097] 226 Locking surface

[0098] 227 guide surface

[0099] 228 end

[0100] 229 external thread

[0101] 3 Support

[0102] A1-A4 Movement

[0103] L Longitudinal axis

Claims

1. A clamping device (2) for fixing a medical device (1) on a support (3), the clamping device (2) comprising: A body (20), the body (20) having a first jaw (200), an adjusting element (21) connected to the second jaw (210) and adjustable along the longitudinal axis (L) relative to the body (20) in order to establish a clamping connection with the support (3) between the first jaw (200) and the second jaw (210), and a locking mechanism (22) for locking the adjustment element (21) in a longitudinal position relative to the body (20), It is characterized in that The locking mechanism (22) comprises a coupling element (220) coupled to the adjusting element (21) and a locking element (224) coupled to the coupling element (220), wherein the adjusting element (21) is rotatable about the longitudinal axis (L) so as to move the coupling element (220), and by moving the coupling element (220), the locking element (224) coupled to the coupling element (220) by means of a pivot axis (223) is displaced relative to the adjusting element (21) so as to engage the locking element (224) with the adjusting element (21) to lock the adjusting element (21) in a current longitudinal position of the adjusting element (21), or to disengage the locking element (224) from the adjusting element (21) so as to unlock the adjusting element (21) to allow the adjusting element (21) to move along the longitudinal axis (L).

2. The clamping device (2) according to claim 1, characterized in that The adjusting element (21) is rotated in a first rotational direction (A2) to engage the locking element (224) with the adjusting element (21) for locking the adjusting element (21) in a current longitudinal position of the adjusting element (21).

3. The clamping device (2) according to claim 2, characterized in that: The adjusting element (21) is rotated in a second rotational direction (A3) opposite to the first rotational direction (A2) to disengage the locking element (224) from the adjusting element (21) so as to unlock the adjusting element (21) to allow the adjusting element (21) to move along the longitudinal axis (L).

4. The clamping device (2) according to one of claims 1 to 3, characterized in that By rotating the adjusting element (21), the locking element (224) is radially displaced relative to the longitudinal axis (L) to engage or disengage with the adjusting element (21).

5. The clamping device (2) according to one of claims 1 to 3, characterized in that The adjustment element (21) comprises an external thread (229) for engaging with the locking element (224).

6. The clamping device (2) according to one of claims 1 to 3, characterized in that The coupling element (220) is arranged on the adjusting element (21) and is frictionally connected to the adjusting element (21), wherein the frictional connection is configured such that when the adjusting element (21) is rotated about the longitudinal axis (L), the coupling element (220) is entrained together.

7. The clamping device (2) according to one of claims 1 to 3, characterized in that The coupling element (220) has the shape of a ring extending around the adjustment element (21).

8. The clamping device (2) according to one of claims 1 to 3, characterized in that At least one of the coupling element (220) and the locking element (224) is axially fixed relative to the body (20) along the longitudinal axis (L).

9. The clamping device (2) according to one of claims 1 to 3, characterized in that The coupling element (220) and the locking element (224) are received in the cavity (202) of the body (20).

10. The clamping device (2) according to one of claims 1 to 3, characterized in that When the locking element (224) is disengaged from the adjusting element (21), the adjusting element (21) is slidably movable relative to the coupling element (220) along the longitudinal axis (L).

11. The clamping device (2) according to one of claims 1 to 3, characterized in that The locking element (224) is operatively connected to a cam element (203) arranged on the body (20), and the cam element (203) is configured to guide the locking element (224) relative to the adjustment element (21) when the adjustment element (21) is rotated about the longitudinal axis (L).

12. The clamping device (2) according to claim 11, characterized in that The cam element (203) engages with a recess (225) formed on the locking element (224).

13. The clamping device (2) according to one of claims 1 to 3, characterized in that The coupling element (220) is biased relative to the body (20) toward a rest position corresponding to a position of the locking element (224) in which the locking element (224) is disengaged from the adjustment element (21).

14. A medical device (1) for administering a medical fluid to a patient, the medical device (1) comprising a holding device (2) according to one of claims 1 to 13.

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