Liquid dispenser with fixed mechanism

Abstract

This invention relates to a liquid dispenser with a fastening mechanism. A liquid dispenser for delivering pharmaceutical liquids is disclosed, comprising a droplet dispenser whose liquid reservoir is formed from a squeezeable bottle body. According to the invention, two measures are proposed for fastening such a liquid dispenser: providing a cap body (80) thereby preventing force from being applied to the squeezeable bottle body (20), and a design of a cap (140) with a rotatable locking ring (146). According to a preferred design, removal of the cap (140) and transfer of the cap body (80) to the use position requires deformation of the annular portion elements (90, 146).

Description

Technical Field

[0001] This invention relates to a liquid dispenser for dispensing pharmaceutical liquids. In particular, the invention relates to a liquid dispenser provided for dispensing liquid in the form of single droplets, for example, for applying eye drops to a patient's eye. Background Technology

[0002] A typical liquid dispenser preferably has a squeezeable bottle body that forms a liquid reservoir. The liquid contained therein can be conveyed by applying force to either side. For this purpose, a conveying head with a conveying opening is secured to the container neck of the squeezeable bottle body.

[0003] The liquid dispensers of this invention typically contain medicinal liquids, which may be harmful to the health of children if ingested. This is problematic, especially in the case of squeeze bottle dispensers, because even a young child who arbitrarily compresses the squeeze bottle body and thus causes liquid dispensing may cause dispensing. Summary of the Invention

[0004] The purpose of this invention is to develop a liquid dispenser that reduces the risk of unintentional liquid delivery.

[0005] According to a first aspect of the invention, a liquid dispenser is provided having a squeezeable bottle body with a container neck, wherein a delivery head is secured to the container neck, the delivery head having a delivery opening through which liquid can be delivered from the squeezeable bottle body. Preferably, the dispenser is a droplet dispenser for discharging single droplets, particularly for ophthalmic applications. The delivery head of such a droplet dispenser preferably has a droplet forming device, particularly in the form of a planar or conical droplet forming surface, on which the delivered liquid is collected until it is released as a droplet from the droplet forming surface. Such a droplet dispenser preferably has an outlet valve arranged upstream of the delivery opening, particularly when the liquid contained therein does not contain preservatives.

[0006] To prevent unintentional compression of the squeezeable bottle body, especially if attempted by a young child, according to a first aspect of the invention, the liquid dispenser has a first cap body that has at least one locking wall and defines at least one actuating recess. The first cap body is configured to be attached to the liquid dispenser and movable between a locked position and an open position, and thus displaceable relative to the squeezeable bottle body.

[0007] In the locked position, the first cap body covers a portion of the squeezeable bottle body by means of a locking wall, thereby preventing or at least hindering the compression of the squeezeable bottle body. In the open position, the first cap body opens the aforementioned portion of the squeezeable bottle body by means of an actuating recess, making compression of the squeezeable bottle body possible.

[0008] To use the liquid dispenser, the user moves the cap body to the open position. After the dispensing process is complete, the user moves the cap body back to the locked position, which prevents accidental dispensing of liquid.

[0009] Due to its shape or wall design, a squeezeable bottle body can have the ability to be pushed in non-uniformly around its perimeter. In this case, at least one portion of the surface that can be covered by the locking wall is the part that can be pushed in in a particularly simple manner. If the cap body is in its locked position, this thereby hinders the compression of the squeezeable bottle body, making only the tougher or unpushable portions of the squeezeable bottle body accessible.

[0010] Preferably, a second cap body is also provided. This second cap body also has at least one locking wall and defines at least one actuating recess. The first cap body is displaceable relative to the second cap body such that, in the open position, the actuating recesses overlap or are even equal, making it possible to apply force to the squeezeable bottle body through the two actuating recesses. However, if the first cap body is in the locked position, the actuating recesses are offset relative to each other, thereby preventing or at least hindering actuation of the squeezeable bottle body.

[0011] In the locked position, the locking portions of the two cap bodies can surround the outer wall of the squeezeable bottle body on the entire periphery or almost completely (>80%), especially by means of their locking portions.

[0012] The cap body is preferably constructed as a shell body surrounding the squeezeable bottle body.

[0013] The first cap body is preferably configured to rotate relative to the squeezeable bottle body, particularly about a main axis in which the delivery opening is also located and / or about the central axis of the squeezeable bottle body. The second cap body is preferably fixedly attached to the squeezeable bottle body with respect to its rotation, particularly preferably attached to the squeezeable bottle body by means of a clamping connection. However, the invention also includes a design in which the two cap bodies are movable, particularly rotatable relative to the squeezeable bottle body and relative to each other.

[0014] The first and / or second cap bodies preferably have substantially rotationally symmetrical sleeve portions, in which at least one actuating recess is provided as a through-hole. The sleeve portions preferably have a length allowing them to extend from the upper end of the squeezeable bottle body as far as its bottom. The at least one through-hole is configured as a recess surrounded on all sides by a corresponding sleeve portion.

[0015] One possible design specifies a precise through-hole on the first or second cap body. For compression, the user applies force directly to the squeezeable bottle body through the through-hole with at least one finger. No other through-hole is provided opposite to this one; therefore, in this case, the force is applied directly by the user to the sleeve portion and only indirectly to the squeezeable bottle body. In this design, there is only one through-hole on the first cap body and optionally on the second cap body, which preferably spans an angle range between 120° and 240° in the circumferential direction, particularly preferably between 150° and 210°.

[0016] One preferred design involves two opposing through-holes on the first or second cap body. To compress the squeezeable bottle body, the user applies force to the squeezeable bottle body through the opposing through-holes using at least one finger (particularly the index finger and thumb). In this design, the two through-holes are preferably oriented to span an angle range between 60° and 170° in each case, and more preferably between 90° and 160° in each case.

[0017] If two cap bodies are used, they are preferably arranged around the inner and outer shells of the squeezeable bottle reservoir, wherein the simple design specifies that the first cap body is arranged on the outside and the second cap body is arranged on the inside, and is preferably fixed to the squeezeable bottle body in terms of rotation. As a result, in the locked state, the locking wall of the second cap body is arranged between the locking walls of the squeezeable bottle body and the first cap body.

[0018] However, it is also possible to have a configuration in which a second cap body, preferably fixedly disposed relative to the squeezeable bottle body, forms an outer shell, and a first movable and preferably rotatable cap body forms an inner shell.

[0019] The squeezeable bottle body, the first cap body, and optionally the second cap body are preferably integral components made of plastic in each case. For assembly, the first cap body and optionally the second cap body are pushed onto the squeezeable bottle body from above or preferably from below. Preferably, the first and / or second cap bodies have latching devices for axially latching onto another cap body, the squeezeable bottle reservoir, or the conveyor head.

[0020] The cap body may have at least one deflectable retaining portion that resiliently widens when the cap body is pushed up and at least partially relaxes again in the end position. In particular, such resiliently deflectable retaining portion may be provided on the second cap body to prevent the squeezeable bottle body from being pulled out of the second cap body after the second cap body has been pushed onto the squeezeable bottle body.

[0021] Specifically, the first cap body preferably has a supporting surface, which limits the resilient deflection capability of the fixed portion of the second cap body during the assembly process, after the first cap body has been pushed onto the second cap body. The first cap body accordingly fixes the second cap body to the squeezeable bottle body.

[0022] In particular, multiple radially deflectable fixed portions may be provided. Preferably, at least one of the cap bodies has two such fixed portions, wherein during assembly, the compressible bottle body pushes these fixed portions apart to allow passage. In the case of a design with multiple fixed portions, it is preferably provided that a common, preferably peripheral, support surface is provided, the radial deflectability of which is limited after assembly.

[0023] It is advantageous if the first cap body can be locked in at least one of the positions (i.e., the locked position and the open position). A design is also conceivable in which the corresponding positions are held only by frictional connection due to high rotational resistance. However, preferably, a switchable locking mechanism is provided, whereby the first cap body is lockable in rotation, thus lockable to the squeezeable bottle body, the second cap body, or the conveyor head. This locking is preferably achieved by a form-locking locking element that, in particular, counteracts rotational movement. If the locking elements are engaged with each other, movement of the first cap body is impossible. The locking elements are arranged such that this locked state is possible in the locked position, in the open position, or in both positions.

[0024] To disengage the locking element, preferably, one of the bodies (particularly the first cover body) is elastically deformable. Specifically, for this purpose, a peripheral annular segment of the cover body may be provided, on which opposing outer unlocking surfaces are disposed, and a locking element disposed internally between the unlocking surfaces in the peripheral direction. By applying force to the unlocking surfaces oriented toward each other, the annular segment is compressed and the locking element deflects outward, thereby releasing the engagement with the internal locking element (particularly on the second cover body).

[0025] It may also be specified to provide an insulated, resiliently deflectable locking element on the cap body or a second cap body, which can be displaced by manual force application, and in particular, is pivotable. This displacement allows the deflectable locking element to disengage from a corresponding locking element on another cap body or on a squeezeable bottle body.

[0026] Since it is particularly preferred that the cover bodies can rotate relative to each other to achieve a locked or open state, it may be advantageous to provide a clamping surface on at least one of the cover bodies for this purpose. A design in which the second cover body has a clamping surface with at least approximately its periphery is particularly advantageous. This clamping surface is preferably provided with a structure, particularly with a regular pattern of raised or recessed areas. The clamping surface is preferably located on the outer side of the aforementioned deflectable fixed portion.

[0027] A second aspect of the invention relates to a liquid dispenser having a conveying device and a cap. The liquid dispenser has a liquid reservoir (particularly formed from a squeezeable bottle body) and a conveying head with a conveying opening. The cap covers the conveying opening and can be removed for liquid discharge purposes and can be replaced after use.

[0028] The cap has a cap body and a locking ring rotatably attached to the cap body. Locking profiles facing each other in the positioned state are provided on the conveying device (particularly on the conveyor head) and the locking ring. These locking profiles prevent removal of the cap in at least one fixed-rotation position of the locking ring by means of a form-locking connection. The locking profiles are configured such that the cap can only be removed when the locking ring has been rotated relative to the conveying device to an open-rotation position.

[0029] The locking ring is tethered to the cap body. Preferably, the cap body and the locking ring have a mating latching device, thereby latching the cap body and the locking ring to ensure rotational mobility when the cap body is pushed into the locking ring from below during the assembly process.

[0030] The locking ring and the cap body are preferably connected together to secure them in the delivery state to prevent rotation, so that a rotatable state must be created first, particularly by deforming or removing a portion of the locking ring or cap body. Specifically, this rotatable portion can be irreversibly removed, for example, by breaking. Simultaneously, it also represents a tamper-evident portion, the removal of which indicates that the liquid dispenser has been put into use.

[0031] In one possible embodiment, it is possible to pull the cap out immediately after rotating the locking ring to the open position. In the open position, with this design, the locking ring does not provide any resistance to the cap being pulled out.

[0032] However, it is preferably specified that the locking profiles facing each other are configured such that the removal of the cap in the open-rotation position of the locking ring is not immediately possible, but only when the locking ring or a local part of the conveying device also elastically deforms.

[0033] To remove the cap, the user must rotate and then deform (especially compress the locking ring) to release it. This isn't particularly difficult for adults, as the rotation and compression of the locking ring, and the pulling out of the cap, can be done with one hand. However, for young children, it's difficult to understand which parts of the movement are required. Furthermore, with proper design, the required deformation of the locking ring might exceed a child's strength.

[0034] Specifically, the locking ring can be specified to have opening-actuating surfaces on opposite sides. If these opening-actuating surfaces are pushed radially toward each other in the open-rotation position, the locking profile on the locking ring is radially displaced outward, making the removal of the cap possible, particularly by simply pulling it out.

[0035] A preferred design is one where the conveyor and locking ring have directional markings that align when the locking ring is in its open position. As a result, it is easy to see whether the cap is locked or removable in the current position of the locking ring.

[0036] Specifically, the orientation mark is preferably arranged on the conveying device such that it is hidden by the locking ring when the locking ring is not in the open position. In this case, a recess can also be provided in the locking ring, through which the orientation mark of the conveying device is visible when the locking ring is in the open position.

[0037] As already shown, according to two aspects of the invention, the liquid dispenser is preferably configured as a droplet dispenser for discharging single droplets, and particularly as a droplet dispenser for ophthalmic use. In embodiments as droplet dispensers, the liquid dispenser preferably has droplet forming means, particularly in the form of a planar or conical droplet forming surface.

[0038] The liquid reservoir of the liquid dispenser according to the invention (particularly formed from the described squeezeable bottle body) preferably has a receiving volume between 2 ml and 100 ml (particularly preferably between 4 ml and 15 ml). Attached Figure Description

[0039] Further advantages and aspects of the invention will become apparent from the claims and the following description of preferred exemplary embodiments of the invention, which will be described hereinafter with reference to the accompanying drawings.

[0040] Figure 1 A first exemplary embodiment of the dispenser according to the present invention is shown.

[0041] Figure 2A and Figure 2B The process of moving the dispenser from its locked state to its open state is shown.

[0042] Figure 3A and Figure 3B The two cap bodies of the dispenser are shown.

[0043] Figure 3C The cover body is shown in an assembled state.

[0044] Figures 4A to 4C The assembly of the dispenser is shown.

[0045] Figure 5A and Figure 5B and Figure 6 A second exemplary embodiment of the dispenser according to the present invention is shown.

[0046] Figure 7A and Figure 7B The cap of the dispenser according to a second exemplary embodiment is shown.

[0047] Figure 8 A delivery head of a dispenser according to a second exemplary embodiment is shown, wherein the cap is removed. Detailed Implementation

[0048] Figure 1 A liquid dispenser 10 is shown, which is used to deliver eye drops, but can also be configured for other pharmaceutical uses, particularly for the dispensing of droplets.

[0049] The liquid dispenser includes a delivery device 12 having a liquid reservoir in the form of a squeezeable bottle body 20 and a delivery head 30, as well as a cap 40. The cap 40 covers the delivery opening 32 and the droplet forming surface 34 on the delivery head 30. After being removed for the first time, the cap 40 can be repeatedly removed and repositioned for the purpose of using the liquid dispenser.

[0050] In a manner not shown in more detail, the delivery head 30 is additionally included with an outlet valve that can be opened by applying pressure to the liquid in the squeezeable bottle body 20, allowing the liquid to flow into the delivery opening and collect on the droplet-forming surface in the inverted position of the delivery device 12 until the droplet is released.

[0051] To ensure ease of operation and measurement capability, the squeezeable bottle body 20 can be compressed even with small forces. However, this is associated with the risk of the squeezeable bottle body 20 being unintentionally compressed, such as in a pocket or luggage, or by a young child.

[0052] To prevent this, a fastening mechanism is provided, primarily formed by a first cover body 80 and a second cover body 60. Figure 1In the assembled state, the two cap bodies 60 and 80 surround the compressible bottle body 20. Both cap bodies 60 and 80 have a generally sleeve-shaped or approximately cylindrical shape, with a corresponding outer surface forming a locking wall 82 and 62, the locking walls 82 and 62 being provided with through holes 84 and 64 facing each other.

[0053] At least one of the cap bodies 60, 80 is configured to rotate about the central axis 2 relative to the compressible bottle body 20 and relative to the other cap body 60, 80, such that the corresponding through holes 64, 84 are aligned or offset from each other depending on the relative rotational position of the cap bodies 60, 80 relative to each other.

[0054] Figure 2A The diagram shows the state in which the through holes 64 and 84 are offset relative to each other, resulting in a fixed state for the conveying device 12. Due to the size of the through holes 64 and 84 in the illustrated design, although the locking walls 82 and 62 cannot completely protect the squeezeable bottle body 20, the remaining opening is not large enough to prevent the squeezeable bottle body 20 from being unintentionally pushed in to a large extent, and therefore cannot discharge liquid.

[0055] from Figure 2A The fixed connection begins, in order to achieve Figure 2B In its intended use, the cover bodies 60 and 80 must rotate relative to each other. However, this cannot be achieved simply by applying torque, as a switchable lock 50 is provided to prevent rotational movement in a locking state. For this purpose, the lock includes an inwardly projecting locking element 92 on the first cover body 80, which engages in the locked state with a wall-shaped locking element 72 of a recess on the second cover body 60 in a wall-shaped manner.

[0056] To release the lock, the annular segment 90 at the bottom of the first cover body 80 must deform. For this purpose, the annular segment has unlocking surfaces 94 facing each other. If a force is applied thereon in the direction of arrow 4, the annular segment 90 deforms, and the locking element 92 shifts radially outward, releasing the engagement with the locking element 72 of the second cover body 60. In this unlocked state, rotational movement in the direction of arrow 6 is now possible, thereby enabling… Figure 2B Usage status.

[0057] Figures 3A to 3C The cover bodies 60 and 80 are shown in separate and assembled views, respectively.

[0058] Figure 3AA second cap body 60 forming the inner cap body in this exemplary embodiment is shown. It can be identified that its body is divided into two parts in the upper region. Two approximately semi-circular retaining portions 68 are provided, forming substantially peripheral clamping surfaces 74 on their outer surfaces, and the retaining portions have retaining profiles 70 on their inner surfaces. By describing the division into two parts, the second cap body 60 can widen when it is pushed from below onto the compressible bottle body 20. Furthermore, in Figure 3A It can be identified that a total of four recesses are provided, offset by 90° in each case, and their side wings form a locking element 72 in each case for engaging with the locking element 92 of the first cover body. As a result, the cover bodies 60 and 80 can be rotated and fixed in both the fixed state and the use state.

[0059] exist Figure 3B In the first cover body 80 shown, the upper annular portion can be identified in the figure as forming a supporting surface with its inner surface. Its inner diameter is adapted to the outer diameter of the second cover body below the clamping surface 74.

[0060] With the cap bodies 60 and 80 assembled, this causes the supporting surface to prevent the two semi-circular fixed portions 68 from deflecting outward. As a result, after being attached to the squeezeable bottle body 20, the second cap body 60 is prevented from being released from it.

[0061] Figures 4A to 4C The component is shown. (Example) Figure 4A and Figure 4B As shown, the conveying device 12, including the squeezeable bottle body 20, is initially pushed into the second cap body 60. In this case, the aforementioned fixed portion 68 deflects. Once the squeezeable bottle body 20 is... Figure 4B The bottle body is fully incorporated into the second cap body as shown, and the connecting parts 68 return to their initial positions and are held in place by means of the retaining profile 70.

[0062] In the next step, now with Figure 4B and Figure 4C The first cover body 80 is pushed up in a visible manner. Its support surface 88 latches below the clamping surface 74 of the second cover body 60, making widening of the second cover body 60 impossible. At the same time, the first cover body 80 is also secured thereto to prevent it from being pulled out axially.

[0063] Figures 4A to 4C A design is shown in which two cover bodies 60, 80 are in Figure 4A In the initial assembly state, they are already connected together to form a pre-assembled unit. While this is preferred, it is also possible to first connect the cover bodies 60 and 80 together during assembly.

[0064] Figures 5A to 8 A second aspect of the invention is illustrated with reference to a second exemplary embodiment. A conveying device 112 having a conveying head 130 and a squeezeable bottle body 120 is also used here. Except for the cap bodies 60, 80, the conveying device 112 and... Figure 1 The conveying equipment shown in Figure 4 is basically the same, and may also include the described cover body 60, 80. Figure 1 Consistent with the exemplary embodiment shown in Figure 4, the delivery head has a delivery opening 132 surrounded by the droplet forming device 134. (Figures 5 to...) Figure 8 The design is particularly unique in the cap 140. This cap has a one-piece cap body 142. A locking ring 144 is pushed onto the lower edge of the cap body 142. The cap body 142 and the locking ring 144 are permanently connected together by means of a peripheral collar 142a on the cap body 142 and a latch 144A on the locking ring 144. However, the connection is smooth enough that, in use, the locking ring 144 can rotate freely relative to the cap body 142, especially when the cap body 142 is clamped against the conveyor 112 and therefore cannot or almost cannot rotate relative to the conveyor 112.

[0065] exist Figure 5A In the transport state, since the plastic tongue 143, which also serves as a tamper-evident part, protrudes into the recess 145 of the locking ring 144 and thereby forms a protection against rotation, the aforementioned rotation capability is not provided. For illustration, the plastic tongue 143 also... Figure 7B The middle part is indicated by a dashed line.

[0066] Rotation is possible only when the plastic tongue 143 has been removed from the cap body 142. Figure 5B The image shows this usage state with the locking ring 144 already rotated.

[0067] Figure 6 The dispenser is shown ready for use, with cap 140 removed.

[0068] The cap 140 can be securely fastened to the conveyor 112 by means of the locking ring 144. (See reference...) Figure 7A and Figure 7B As can be seen, a locking profile 146, in the form of an inwardly protruding shape, is provided on the inner surface of the locking ring 144, and the locking profile 146 has an insertion bevel on its lower surface. Correspondingly, locking profiles 116A and 116B are also provided on the conveyor head 130. This allows for… Figure 8 Identification in the middle.

[0069] If the cap 140 is positioned on the conveyor 112, the locking profile 146 engages below the locking profiles 116A, 116B and prevents the cap 140 from being easily pulled out.

[0070] To pull out the cap, locking profile 144 must be shifted radially outward. For example... Figure 5B As illustrated, it is possible to offset the open-actuated surface 148 by 90° relative to the locking profile 146 by pushing them toward each other in the direction of arrow 8.

[0071] However, in each rotational position of the locking ring 144, the deflection of the locking profile 146 required to release the connection of the locking profiles 116A, 116B, 146 is impossible. Only Figure 5B Sufficient deformation is possible only in the rotational position in which the open-actuating surface 148 is arranged in the region of the recess 116C between the locking profiles 116B, and the locking profile 146 is arranged in the region of the locking profile 116A.

[0072] To enable identification of the correct orientation, orientation marks 119 and 149 are provided. Orientation mark 119 on the conveyor 112 consists of a symbol (in this example, an arrow symbol) on the outer surface of the conveyor head 130. Orientation mark 149 on the cap includes a through-hole through which the orientation mark 119 on the conveyor head 130 can be identified from the outside when properly oriented.

[0073] Although the locking ring 144 must initially be properly oriented when the cap 140 is removed, this may be omitted during the cap's positioning, depending on the cap's design. This is achieved by appropriately inserting bevels on at least one of the locking profiles 116A, 116B, 146.

Claims

1. A liquid dispenser (10) for discharging liquid medicine, having the following features: The liquid dispenser (10) has a squeezeable bottle body (20) with a container neck, and The liquid dispenser (10) has a delivery head (30) fastened to the squeezeable bottle body (20) and having a delivery opening (32) through which liquid can be delivered from the squeezeable bottle body (20). The liquid dispenser (10) has a first cap body (80) having at least one locking wall (82) and defining at least one actuating recess (84), and The first cap body (80) is configured to be attached to and movable on the liquid dispenser, and In the locked position, the first cap body (80) covers a portion of the squeezeable bottle body (20) by means of the locking wall (82), thereby preventing or at least hindering compression of the squeezeable bottle body (20). In the open position, the first cap body opens the portion of the squeezeable bottle body (20) by means of the actuating recess (84), making compression of the squeezeable bottle body (20) possible. The liquid dispenser (10) has a second cover body (60) having at least one locking wall (62) and defining at least one actuating recess (64). The second cap body (60) has at least one resiliently deflectable retaining portion (68) that prevents the squeezeable bottle body (20) from being pulled out of the second cap body (60), and The first cover body (80) has a support surface (88), and the resilient deflection capability of the fixed portion (68) of the second cover body (60) is limited by the support surface. The supporting surface (88) abuts against the second cover body (60) on the outside in the region of the resiliently deflectable fixed portion (68) on the second cover body (60).

2. The liquid dispenser according to claim 1, further comprising the following features: The first cap body (80) is displaced relative to the second cap body (60) such that the actuation recesses (64, 84) overlap in the open position, making it possible to apply force to the squeezeable bottle body (20) through the two actuation recesses, and such that the actuation recesses (64, 84) are offset relative to each other in the locked position, so that actuation of the squeezeable bottle body (20) is prevented or at least hindered.

3. The liquid dispenser according to claim 1, further comprising the following additional features: The second cover body (60) has at least a periphery clamping surface (74).

4. The liquid dispenser according to claim 3, further comprising the following additional features: The clamping surface (74) has a structure with regular patterns of protrusions or depressions.

5. The liquid dispenser (10) according to any one of claims 1 to 4, further comprising the following features: The first cap body (80) is rotatable relative to the squeezeable bottle body (20) and / or relative to the second cap body (60).

6. The liquid dispenser according to claim 5, wherein, The rotation axis (2) coincides with the central axis (2) of the squeezeable bottle body (20).

7. The liquid dispenser according to claim 5, having at least one of the following additional features: The second cap body (60) is fixed relative to the squeezeable bottle body (20) in terms of rotation by means of a clamping connection between the second cap body (60) and the squeezeable bottle body (20), or The second cap body (60) is rotatable relative to the squeezeable bottle body (20) and relative to the first cap body (80).

8. The liquid dispenser (10) according to any one of claims 1 to 4, further comprising the following features: The first cover body (80) and / or the second cover body (60) have substantially rotationally symmetrical sleeve portions (66, 86), and the at least one actuating recess (64, 84) is provided in the sleeve portion (66, 86) in the form of a through hole (64, 84).

9. The liquid dispenser according to claim 8, further comprising the following additional features: A through hole (64, 84) is provided on the first cover body (80) or the second cover body (60).

10. The liquid dispenser according to claim 9, further comprising the following features: In the peripheral direction, the through holes (64, 84) cover an angular range between 120° and 240°.

11. The liquid dispenser according to claim 9, further comprising the following features: In the peripheral direction, the through holes (64, 84) cover an angular range between 150° and 210°.

12. The liquid dispenser according to claim 8, further comprising the following additional features: Two through holes (64, 84) are provided on the first cover body (80) or the second cover body (60).

13. The liquid dispenser according to claim 12, further comprising the following features: The through holes (64, 84) cover an angle range between 60° and 170° in each case.

14. The liquid dispenser according to claim 12, further comprising the following features: The through holes (64, 84) cover an angle range between 90° and 160° in each case.

15. The liquid dispenser (10) according to any one of claims 2 to 4, further comprising the following features: The two cap bodies (60, 80) are arranged relative to each other such that, in the locked position, the locking wall (62) of the second cap body (60) is arranged between the locking wall (82) of the squeezeable bottle body (20) and the first cap body (80).

16. The liquid dispenser (10) according to any one of claims 2 to 4, further comprising the following features: Provides multiple radially deflectable fixed portions (68), wherein, The common support surface (88) restricts radial deflectability.

17. The liquid dispenser according to claim 16, wherein, The supporting surface (88) is peripheral.

18. The liquid dispenser (10) according to any one of claims 1 to 4, further comprising the following features: A switchable lock (50) is provided, wherein the first cover body (80) is lockable in rotation, thereby being in its locked position.

19. The liquid dispenser according to claim 18, having at least one of the following additional features: The first cover body (80) can be locked in the locked position in terms of rotation by a locking element (92, 72) that acts in a form-locking manner, and / or The first cap body (80) is fixed in place to prevent rotation by means of a locking mechanism on the second cap body (60) or the squeezeable bottle body (20), and / or The first cover body (80) can also be fixed in its open position to prevent rotation by means of the switchable lock (50).

20. The liquid dispenser (10) according to any one of claims 1 to 4, further comprising the following features: The first cover body (80) has a peripheral annular section (90) that can be elastically deformed, on which are provided external unlocking surfaces (94) opposite to each other, and at least one locking element (92) is provided between the unlocking surfaces (94) in the peripheral direction on the peripheral annular section (90).

21. The liquid dispenser (10) according to any one of claims 1 to 4, further comprising the following features: A locking element that can be resiliently deflected is provided on the first cap body (80) or the second cap body (60), the locking element being displaceable by manually applying force, such that it separates from a corresponding locking element on the other cap body or the squeezeable bottle body.

22. The liquid dispenser (10) according to any one of claims 1 to 4, further comprising the following features: A resiliently deflectable locking element is provided on the first cap body (80) or the second cap body (60), the locking element being pivotable by manually applying force, such that it is separated from a corresponding locking element on the other cap body or the squeezeable bottle body.

23. The liquid dispenser (110) according to claim 1, having the following characteristics: The liquid dispenser (110) has a conveying device (112) with a liquid reservoir formed from a squeezeable bottle body and a conveying head (130) with a conveying opening (132), and The liquid dispenser (110) has a replaceable cap (140) that covers the delivery opening (132) in a positioned state and opens the delivery opening (132) for liquid delivery in a removed state. The cap (140) has a cap body (142) and a locking ring (144) rotatably attached to the cap body, and In the positioning state, the locking profiles (116, 146) facing each other are located on the conveying device (112) and the locking ring (144), the locking profiles preventing the removal of the cap (140) in at least one fixed-rotation position of the locking ring (144) relative to the conveying device (112) by means of a form-locking connection. The locking profiles (116, 146) facing each other are configured such that the cap (140) can only be removed when the locking ring (144) has been rotated relative to the conveying device (112) to the open-rotate position.

24. The liquid dispenser (110) according to claim 23, further comprising the following features: The locking profiles (116, 146) facing each other are configured such that the cap (140) can only be removed in the open-rotation position if either the locking ring (144) or a portion of the conveying device (112) also elastically deforms.

25. The liquid dispenser (110) according to claim 23, further comprising the following features: The locking ring (144) has an opening-actuating surface (148) on opposite sides, which, when forces are applied simultaneously radially toward each other in the opening-rotation position, radially outwardly displace the locking profile (146), making it possible to then remove the cap (140).

26. The liquid dispenser (110) according to any one of claims 23 to 25, further comprising the following features: The cap body (142) and the locking ring (144) have cooperating latching devices (142A, 144A) thereon, which can latch the cap body (142) and the locking ring (144) to ensure rotational mobility when the cap body is pushed into the locking ring from below.

27. The liquid dispenser (110) according to any one of claims 23 to 25, having the following additional features: The locking ring (144) and the cap body (142) have shapes by which they are connected together to be fixed in the transport state to prevent rotation. The locking ring (144) or a portion of the cap body (142) can be removed to create rotatability.

28. The liquid dispenser (110) according to any one of claims 23 to 25, further comprising the following features: The conveying device (112) and the locking ring (144) have orientation marks that are aligned when the locking ring (144) is in its open position.

29. The liquid dispenser (110) according to claim 28, having the following additional features: The orientation mark (119) is arranged on the conveying device (112) such that the orientation mark (119) is hidden by the locking ring (144) when the locking ring is not in the open position.

30. The liquid dispenser (110) according to claim 29, wherein, A recess (149) is provided in the locking ring (144), and when the locking ring is in the open position, the orientation mark (119) of the conveying device (112) is visible through the recess.

31. The liquid dispenser (110) according to any one of claims 23 to 25, further comprising the following features: The liquid dispenser (110) is configured as a dropper for discharging single droplets.

32. The liquid dispenser (110) according to claim 31, wherein, The dropper in question is a dropper used for ophthalmic purposes.

33. The liquid dispenser (110) according to any one of claims 23 to 25, having the following additional features: The liquid dispenser (110) has a droplet forming device.

34. The liquid dispenser (110) according to claim 33, wherein, The droplet forming device is in the form of a planar or conical droplet forming surface.

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