Device capable of cleaning nozzle of dental tool and system comprising nozzle element and such device

Abstract

The invention relates to a device (1) capable of cleaning a nozzle element (10) of a dental tool, in which the nozzle element (10) ejects a powder-gas mixture conveyed by a first channel (11) of the nozzle element (10) and a fluid conveyed by a second channel (12) of the nozzle element (10), the nozzle element (10) is configured to eject a powder-gas mixture and a fluid such that the ejected fluid surrounds the ejected powder-gas mixture, the device (1) comprising:-an interface section (22) configured to connect the device (1) to the nozzle element (10) of the dental tool; and-an inlet section (21) configured to introduce a cleaning medium into the device (1) wherein the device (1) is configured to direct the cleaning medium into the first channel (11) and the second channel (12) of the nozzle element (10) in order to clean the first channel (11) and the second channel (12).

Description

[0001] The present invention relates to a device for supporting a nozzle of a dental cleaning tool and a system including a nozzle element and the device.

[0002] Nozzle systems in powder blasting devices are known from the prior art, such as US 3 882 638 A or EP 0 294 548 A1. These nozzle systems are typically used for cleaning teeth, in particular for removing stains, tartar, and discoloration from teeth and for removing dental biofilm. In particular, the purpose of using a powder blasting device is to clean the tooth surface without damaging the underlying tooth surface, i.e., enamel or dentin, and to rid the tooth surface of stains, tartar, biofilm, and discoloration.

[0003] These nozzle systems provide a powder-gas mixture flow surrounded by a liquid flow. The outlet flow formed by the powder-gas mixture surrounded by the liquid flow is directed onto the tooth surface and causes the removal of stains, tartar, discoloration, and / or dental biofilm. The liquid flow surrounding the powder-gas mixture flow is arranged to capture the dust generated during the operation of the powder blasting device and to avoid a mist.

[0004] DE 10 2013 108 295 A1 describes a method that uses a device for introducing water into the proximal end of a channel for conveying a powder-gas mixture when operating a dental tool. Thus, the device of DE 10 2013 108 295 A1 can be used to clean the channel for conveying the powder-gas mixture. The device is not configured to clean the channel for conveying water, which is ejected such that the water surrounds the ejected powder-gas mixture. However, the water channel may also have some chemical residues that may clog the water channel.

[0005] To clean the channels for conveying fluids, an ultrasonic bath is typically used. However, this method requires a large amount of equipment and is very time-consuming.

[0006] In view of the prior art, it is an object of the present invention to provide a device capable of cleaning a nozzle element of a dental tool.

[0007] This object is achieved by the device according to claim 1 and the system according to claim 15. Preferred embodiments are incorporated in the dependent claims, the description, and the drawings.

[0008] According to a first aspect of the present invention, there is provided a device capable of or supporting the cleaning of a nozzle element of a dental tool, wherein the nozzle element ejects a powder-gas mixture conveyed by a first channel of the nozzle element and a fluid conveyed by a second channel of the nozzle element, and wherein the nozzle element is configured to eject the powder-gas mixture and the fluid such that the ejected fluid surrounds the ejected powder-gas mixture. The device comprises:

[0009] - an interface section configured to connect the device to the nozzle element of the dental tool, and

[0010] - an inlet section configured to introduce a cleaning medium, in particular a pressurized cleaning medium, into the device,

[0011] wherein the device is configured to direct the cleaning medium into the first and second channels of the nozzle element to clean the first and second channels.

[0012] Different from the methods of the prior art, the present invention proposes to provide a device suitable for supplying a cleaning medium to both the first and second channels of a nozzle element of a dental tool. Preferably, the dental tool is a powder blasting device that provides a stream of a powder-gas mixture surrounded by a curtain formed by a fluid, in particular a liquid stream such as a water stream. It has been found that a device capable of or supporting the cleaning of a dental tool can advantageously be used to direct a cleaning medium inside both the first and second channels of the nozzle element. Thus, there is no longer a need to use an ultrasonic bath for removing residues from the second channel, which is used to direct the fluid to be ejected from the nozzle element to form a curtain surrounding the ejected powder-gas mixture. Preferably, the interface section and the inlet section respectively form part of a delivery channel that directs the cleaning medium from the inlet section to the interface section. In order to form the inlet section and the interface section, those sections need to be dimensioned and shaped such that a sealed connection is established between the device on the one hand and the nozzle element / device for providing the pressurized medium on the other hand. In particular, the inlet section and the interface section, especially in terms of their dimensions and / or shape, are different from each other. For example, the opening in the inlet section has a different size from the opening in the interface section. Preferably, the opening in the inlet section is larger than the opening in the interface section.

[0013] In particular, the device capable of cleaning the nozzle element is configured such that the first and second channels can be cleaned synchronously, i.e., simultaneously. This ensures that the second channel is cleaned each time the first channel is cleaned.

[0014] Furthermore, it can preferably be set that the device is configured to process a fluid having a pressure between 0.6 bar and 2.4 bar, more preferably between 0.8 bar and 2 bar, and most preferably between 1 bar and 1.6 bar. In other words, the device is configured such that the connection, in particular the sealed connection, of the device on the one hand to the nozzle element and on the other hand to the device for providing the pressurized cleaning medium, in particular a syringe, is maintained, and the device does not disconnect from the nozzle element or the device for providing the pressurized cleaning medium when the fluid enters the device. Thus, for example, standard 20 mL or 60 mL syringes can be used to insert the cleaning medium into the nozzle element via the device. Such a 20 mL syringe typically generates a pressure between 1.5 bar (normal) and 2.2 bar (maximum), or a 60 mL syringe typically generates a pressure between 0.9 bar (normal) and 1.2 bar (maximum).

[0015] Accordingly, the second channel can be cleaned regularly in a simple manner to avoid any type of crystallization during the sterilization step. Otherwise, clogging of the second channel may occur, which typically results from the chemicals used during the reprocessing method. These chemicals would otherwise crystallize during the sterilization step when not rinsed with pure water and then form hard deposits within the water channels.

[0016] In particular, it can be set that the interface section is configured to receive the nozzle element and establish a sealed connection between the nozzle element on the one hand and the device on the other hand. The inlet section is configured to receive the device for providing the pressurized cleaning medium. For example, the device for providing the pressurized cleaning medium is a syringe that can be inserted into the inlet section of the device at the standardized portion of its front end. Thus, the device forms an adapter between the device for providing the pressurized cleaning medium and the nozzle element that is cleaned by using the pressurized cleaning medium.

[0017] In particular, the device includes a collar section for holding the device. In particular, the collar section is formed to allow two-finger holding during the injection of the liquid by means of the syringe. Preferably, the collar section is formed as an external annular flange that projects, for example, from the device in a direction perpendicular to the axis of symmetry of the device.

[0018] Preferably, it can be provided that the interface section is configured to form a frictional connection and / or a form-fitting connection with the nozzle element. Thus, the device can advantageously be attached by a simple attachment movement, preferably by using only one hand. It is also conceivable that a bayonet connection can be used to form the connection between the device and the nozzle element. Preferably, the interface section is configured for a pure frictional connection. In the case of a pure frictional connection, no other configuration is required at the nozzle element, and the device can be used with multiple nozzle elements. Preferably, the device is connected to the nozzle element and / or the device for supplying pressurized cleaning medium by means of a plug-in mechanism.

[0019] Preferably, it can be provided that the interface section is configured to surround the distal end portion of the nozzle element when the device is attached to the distal end portion of the nozzle element. Different from the methods of the prior art, the device is configured such that the device is attached to the distal end portion of the nozzle element without being attached to the proximal end portion. In addition, the device can simply be pulled onto the outlet area of the nozzle element including the outlets of the first nozzle element and the second nozzle element. Due to attaching the device to the distal end portion of the nozzle element, the cleaning medium can advantageously be directly supplied to the areas more affected by residues inside the first channel and the second channel. In addition, by forming a connection surrounding the nozzle element, the possibility of damaging the device can be reduced, which otherwise may cause plastic debris to block or clog the nozzle element.

[0020] According to a preferred embodiment, it can be provided that the device includes a delivery channel for delivering the cleaning medium from the inlet section to the interface section. Preferably, the delivery channel is formed by a recess or a hole that extends through the device. In particular, the delivery channel extends straight, arcuately, and / or angularly. In addition, the interface section and the inlet section form the starting front side and the ending front side of the delivery channel. The interface section corresponds to the following part of the delivery channel: the part that extends along the length defined by the length of the part inserted into the interface section when the device is attached to the nozzle element. The inlet section corresponds to the following part of the delivery channel: the part that extends over a length corresponding to the length of the part where the syringe is inserted into the inlet area when the device is attached to the syringe. Preferably, the length of the part of the delivery channel between the interface section and the inlet section is at least twice as large, preferably four times as large, and most preferably six times as large as the length of the inlet section and / or the interface section.

[0021] Preferably, it may be provided that the delivery channel tapers from the inlet section to the interface section. In particular, the delivery channel forms a recess and / or hole of a conical shape, which extends over the entire length of the device or at least about 70% of the entire length. In addition, the tapered, in particular conically tapered, delivery channel allows on the one hand to reduce the volume between the syringe and the nozzle at the interface section and thus to minimize the "dead" water volume, and on the other hand to reduce the pressure drop. It has been shown that using a tapered channel represents a preferred way to establish a balance between minimizing the volume and reducing the pressure drop. Preferably, it may be provided that the delivery channel is defined by the inner wall of a recess or hole extending through the device. In particular, it may be provided that the inner wall defining the delivery channel of the device has no stepped profile. Thus, it is possible to advantageously avoid the generation of vortices when the cleaning medium is inserted into the device under pressure. Preferably, the inner wall forms a continuously tapered hole.

[0022] In particular, it may be provided that a single delivery channel is configured to supply the cleaning medium to both the first and second channels of the nozzle element. In such an embodiment, a delivery channel of a very simple form, such as a conical shape, may be used to supply the cleaning medium to both the first and second channels. Thus, no separate supply for the first and second channels is required, and both channels, i.e., the first and second channels, can use the device for supplying the cleaning medium to clean the first and second channels.

[0023] In particular, the interface section and / or the inlet section includes a recess of a conical shape. Preferably, it may be provided that the interface section and / or the inlet section is part of the delivery channel, and the part of the delivery channel assigned to the interface section and / or the inner section is conically formed. The conical inner part, in particular the conical inner part of the inlet area, is used to receive the outlet of a device for providing a pressurized cleaning medium, such as a syringe, and to form and establish a sealed connection between the device for providing a pressurized cleaning medium on the one hand and the device on the other hand. In addition, the conical shape of the interface section is advantageous because this conical shape reduces the likelihood of damage at the device, which otherwise could produce plastic debris that blocks or clogs the nozzle element.

[0024] Preferably, it may be provided that the device is tubular in shape at least in cross-section. In particular, it may also be provided that the device extends mainly along the longitudinal direction and forms a straight tubular member made of a preferably elastically deformable material. It is also conceivable that in an alternative embodiment, the device is formed at least in cross-section by a hose, which is flexible and does not automatically return to its original shape after deformation.

[0025] Preferably, it may be provided that the inlet section forms a concave part of the connection mechanism to receive the front end part of the device for providing pressurized fluid. In particular, it may be provided that the inlet section forms part of a Luer lock to receive a part of the syringe, in particular the standardized front end of the syringe. The Luer lock forms a standard interface connection between the syringe and, for example, the needle for such a syringe. By adapting the shape of the inlet section, in particular the inner wall of the delivery channel, to the standardized shape, the adapter element can be used in combination with each syringe having all standardized dimensions. Thus, a syringe can be inserted at the inlet area and the cleaning medium can be pressed into the device by using the syringe, and the device guides the pressurized cleaning medium into the first and second channels of the nozzle element via the delivery channel and / or the interface section. Preferably, the inlet section, i.e., the inner wall of the device forming the starting part of the delivery channel, forms or establishes a concave part of the Luer lock for receiving the standardized front end of the syringe.

[0026] Preferably, it may be provided that at least a part of the interface section is made of a material having a hardness of 40 Shore A to 100 Shore A. Preferably, the material has a hardness of about 50 Shore A to 95 Shore A, and more preferably about 80 Shore A to 90 Shore A. It has been shown that such material properties allow the interface section to be elastically deformed so that different types of nozzle elements can be inserted into the interface section of the device. Thus, it can be considered that some nozzle elements may not have a complete or perfect circular cross-section in a plane perpendicular to the delivery direction, along which the powder-gas mixture is delivered in the first channel during operation. In particular, the elastic material component of the device allows a sufficient frictional connection to be formed between the nozzle element and the device when the adapter element or the device is pulled onto the nozzle element.

[0027] In particular, at least a part of the interface section is made of a material having a hardness of 60 Shore D to 90 Shore D, more preferably between 70 Shore D and 80 Shore D, and most preferably about 76 Shore D. Preferably, the interface section, and more preferably the entire device, is formed of polypropylene.

[0028] In particular, it may be provided that the device is formed as a single-piece component. In particular, the single-piece component is made of one material. In particular, those skilled in the art understand a "single-piece component" as a component that cannot be divided into other sub-components without breaking the component.

[0029] Preferably, it can be provided that the device is configured such that the inlet section is more rigid than the interface section. Thus, the interface section is soft enough to accommodate geometric defects of the nozzle element, and the inlet section is rigid enough to introduce pressurized fluid or liquid into the device. In other words: the interface section needs to be soft for mating with the nozzle element, and the inlet area needs to be rigid for mating with the syringe. This allows the front end of the syringe to be easily inserted into the inlet section. No deformation is required at the inlet section because the front end of the syringe is standardized to form a luer lock. At the inlet section, a rigid material is advantageous because it supports easy handling, and at the opposite end, i.e., at the interface section, it is advantageous to have a section with less rigidity and greater elastic deformability that can adapt to the different and non-standardized shapes of the nozzle element and its external shape. Additionally, the inlet area is configured to be rigid such that it can transfer pressure energy without deformation.

[0030] Preferably, it can be provided that the inlet section is formed by a wall having a first wall thickness, and the interface section is formed by a wall having a second wall thickness, wherein the first wall thickness is different from the second wall thickness. Preferably, the second wall thickness is less than the first wall thickness. By adjusting the wall thickness, the elasticity of the inlet section and the interface section can be advantageously adjusted or tuned separately. This particularly allows for using the same material for the device on the one hand and creating different grades of stiffness at the inlet section and the interface section.

[0031] In particular, the first wall thickness is between 0.5 mm and 7 mm, preferably between 1 mm and 4 mm, and most preferably between 1 mm and 3 mm. In particular, the second wall thickness is between 0.1 mm and 1.5 mm, preferably between 0.2 mm and 1.2 mm, and most preferably between 0.3 mm and 1 mm. It is also conceivable that the first wall thickness and / or the second wall thickness is less than a third wall thickness of a portion of the delivery channel arranged between the inlet section and the interface section. Thus, mating can be ensured or at least improved.

[0032] Preferably, it can be provided that the device is at least partially formed of a thermoplastic elastomer, such as PET, PP, PE. It has been shown that, on the one hand, the thermoplastic elastomer can be easily processed during manufacturing, and on the other hand, the material provides the elasticity desired for the inlet section and the interface section to form the desired different grades of stiffness.

[0033] Preferably, it can be provided that the device has a predominantly circular outlet shape, preferably with a predominantly constant cross-section outside the interface section. The interface section is preferably formed by an annular element that protrudes at the front end of the device opposite the inlet area.

[0034] Preferably, the fluid and / or the cleaning medium is water and / or sterile water.

[0035] Another aspect of the present invention provides a system that includes a nozzle element of a dental tool and a device according to the present invention. All of the detailed descriptions and benefits discussed in the context of the device similarly apply to the system consisting of the device and the nozzle element. In particular, it may be provided that, in a preferred embodiment, the nozzle element and the device are adapted to each other to form a sealed connection between the device and the nozzle element when the nozzle element is inserted into the device.

[0036] In the drawings:

[0037] Figure 1 A device capable of cleaning a nozzle element according to a preferred embodiment of the present invention is schematically shown in a (top) side view and a (bottom) cross-sectional view, and

[0038] Figure 2 A device capable of cleaning the attached nozzle element is schematically shown in a (top) side view and a (bottom) cross-sectional view. Figure 1 of the nozzle element.

[0039] In Figure 1 , a device 1 capable of cleaning a nozzle element 10 according to a preferred embodiment of the present invention is illustrated in a (top) side view and a (bottom) cross-sectional view. In particular, the device 1 that supports or is capable of cleaning the nozzle element 10 is intended to support or be capable of cleaning the nozzle element 10 of a powder blasting device that sprays a powder-gas mixture for removing stains, tartar, coloring, and / or dental biofilm from the surface of teeth. Such a powder blasting device or powder jet device typically sprays a fluid stream in addition to the powder-gas mixture, and the fluid stream surrounds the sprayed powder-gas mixture to form a kind of curtain. Thus, dust formation can be reduced when the abrasive particles of the powder-gas mixture impact the surface of the teeth.

[0040] To spray the powder-gas mixture surrounded by the fluid stream, the nozzle element 10 includes a first channel 11 for conveying the powder-gas mixture and a second channel 12 for guiding the fluid until the fluid exits the nozzle element 10, and the second channel 12 surrounds the first channel 11. Preferably, the second channel 12 completely surrounds the first channel 11, and the first channel 11 and the second channel 12 are arranged concentrically with each other. Preferably, the cross-section of the second channel 12 has an annular shape in a plane perpendicular to the conveying directions of both the conveyed powder-gas mixture and the fluid. Preferably, the second channel 12 forms a slit-shaped ring at the outlet of the nozzle element 10 for forming a non-diffusing and thin curtain of the fluid.

[0041] A device 1 that supports or is capable of cleaning the nozzle element 10 of a dental tool is particularly intended to form an adapter between the nozzle element 10 and a syringe. In other words: The device is configured such that it is adapted to receive a cleaning medium, preferably water, and to direct the cleaning medium into the nozzle element 10. In particular, it can be provided that the device 1 is configured to direct the cleaning medium into a first channel 11 and a second channel 12 of the nozzle element 10 in order to clean the first channel 11 and the second channel 12. Thus, the device 1 can be used for cleaning both the first channel 11 and the second channel 12. For this purpose, the device 1 includes: an interface section 22 that is configured to connect the device 1 to the nozzle element 10 of the dental tool; and an inlet section 21 that is configured to introduce the cleaning medium into the device 1. In Figure 1 an embodiment, the device 1 is tubular in shape, and the interface section 22 and the inlet section 21 are arranged at opposite ends of the tubular member. However, it is also conceivable that the device 1 is formed by a flexible hose or a component having an arcuate or angled trajectory. In Figure 1 an embodiment, the device 1 is configured as a straight-extending tubular member.

[0042] Preferably, the device 1 includes a delivery channel 13 that guides the cleaning medium from the front side of the inlet section 21 to the front side of the interface section 22. In Figure 1In the illustrated embodiment, the delivery channel 13 tapers from the inlet section 21 to the interface section 22. In particular, there are no stepped portions or stepped tracks on the inner side of the hole, which preferably has a conical shape, forming the delivery channel 13 inside the device 1. Preferably, the inner side continuously tapers from the front side of the inlet section 21 to the front side of the interface section 22. Preferably, it can be set that the length of the distance between the front side of the inlet section 21 and the front side of the interface section 22 has a value between 4 cm and 10 cm. In addition, it can be set that the device 1 is formed as a one-piece component. A one-piece component is understood to be a component that cannot be divided into sub-components without destroying the device 1. For example, the device 1 is formed of one material. Preferably, the material of the device 1 is a thermoplastic elastomer. In particular, the material has a hardness between 40 Shore A and 100 Shore A, more preferably between 80 Shore A and 90 Shore A. This material specification allows the wall thicknesses at the inlet section 21 and the interface section 22 to be constructed to adjust the elasticity of the inlet section 21 and the interface section 22. This is particularly advantageous because the cross-section of the nozzle element 10 inserted into the interface section 22 of the device is different for different dental tools. In particular, these insertion parts of the nozzle element 10 can have an oval or non-circular cross-section, such that a certain amount of deformation, especially elastic deformation, is required to form a sufficient and sealed connection between the interface section 22 of the device 1 and the nozzle element 10. Preferably, it can be set that the wall forming the inlet section 21 has a first wall thickness D1, while the wall forming the interface section 22 has a second wall thickness D2. In particular, the first wall thickness D1 is different from the second wall thickness D2. In particular, the second wall thickness D2 is less than the first wall thickness D1. This allows, for example, a more elastic wall to be provided in the interface section 22 compared to the wall of the inlet section.

[0043] Preferably, the ratio of the second wall thickness D2 to the first wall thickness D1 is less than 0.7, preferably less than 0.6, and more preferably less than 0.5.

[0044] The delivery channel 13 in the device 1 is formed by a concave portion or hole having a conical shape established inside the device 1. Preferably, the delivery channel 13 extends mainly concentrically with the outer side of the device 1.

[0045] In addition, the inlet section 21 and the interface section 22 are part of the delivery channel 13. In other words, the conical track of the hole in the inlet section 21 is continued for forming the delivery channel 13, and the delivery channel 13 continues the conical track until the interface section 22.

[0046] In particular, it can be provided that the interface section 22 forms part of the device 1, which part extends from the front side of the interface section 22 to the front side of the syringe when the syringe is fully inserted into the device 1. In particular, the inner part of the inlet section 21, especially the recess or hole, forms part of a luer lock for receiving the tip of the syringe. In particular, the inner part of the recess in the device 1, especially in the inlet section 21, is configured such that it forms the concave part of the luer lock. In other words: the internally conical hole is adapted to the standardized dimensions of the outlet tube or the front end part of the syringe, such that the device 1 can be easily pulled onto the tip of the syringe, and water can be pressed into the device 1 by forming a sealed connection between the syringe and the device 1.

[0047] In Figure 2 FIGS., the device 1 when attached to the nozzle element 10 is illustrated in a (top) side view and a (bottom) cross-sectional view. Figure 1 The connection between the nozzle element 10 and the device 1 is established by the interface section 22. The interface section 22 is configured to supply the cleaning medium to the first channel 11 and the second channel 12. In particular, it is provided that the device 1 is configured to be attached to the distal end 15 of the nozzle element 10. In particular, the interface section 22 also forms the concave part of the connection mechanism, and the interface section 22 receives the nozzle element 10 inside the device 1. In particular, the device 1 has a collar-like element, wherein the collar-like element projects from the device 1 in a direction parallel to the conveying direction, along which the cleaning medium is conveyed through the device 1. The nozzle element 10 of the dental tool is inserted into the interior of the interface section 22 mainly formed by the collar element. Thus, the nozzle element 10 can be surrounded and the cleaning medium can be supplied to the outlets of both the first channel 11 and the second channel 12. In particular, it can be provided that the interface section 22 is configured to form a form-fitting connection and / or a friction connection with the nozzle element 10. Thus, for example, the device 1 can be attached to the nozzle element 10 by using only one hand to pull the device 1 onto the nozzle element 10. In addition, the device 1 is configured such that a single conveying channel 13 supplies the cleaning medium to the first channel 11 and the second channel 12, wherein the cleaning medium preferably enters at the outlets of the first channel 11 and the second channel 12 for cleaning the first channel 11 and the second channel 12, which outlets are typically used for ejecting the powder-gas mixture and the fluid when the nozzle element 10 is operated. The interface section 22 extends in the conveying direction by a length corresponding approximately to the insertion part of the nozzle element 10 inserted into the device 1 at the interface section 22.

[0048] Reference numerals:

[0049] 1 Device

[0050] 10 Nozzle element

[0051] 11 First channel

[0052] 12 Second channel

[0053] 13 Delivery channel

[0054] 15 Distal end

[0055] 21 Inlet section

[0056] 22 Interface section

[0057] D1 First wall thickness

[0058] D2 Second wall thickness

Claims

1. A device (1) capable of cleaning a nozzle element (10) of a dental tool, wherein, The nozzle element (10) ejects a powder-gas mixture conveyed by a first channel (11) of the nozzle element (10) and a fluid conveyed by a second channel (12) of the nozzle element (10), wherein the nozzle element (10) is configured to eject the powder-gas mixture and the fluid such that the ejected fluid surrounds the ejected powder-gas mixture. The device (1) comprises: - an interface section (22) configured to connect the device (1) to the nozzle element (10) of the dental tool, and - an inlet section (21) configured to introduce a cleaning medium into the device (1), wherein the device (1) is configured to guide the cleaning medium into the first channel (11) and the second channel (12) of the nozzle element (10) to clean the first channel (11) and the second channel (12), characterized in that the interface section (22) is configured to surround a distal end portion (15) of the nozzle element (10) when the device (1) is attached to the nozzle element (10).

2. The device according to claim 1, wherein, The device includes a collar section for holding the device.

3. The device (1) according to one of the preceding claims, wherein, The interface section (22) is configured to form a frictional connection and / or a form-fitting connection with the nozzle element (10).

4. The device (1) according to one of the preceding claims, wherein, The device (1) includes a delivery channel (13) for delivering the cleaning medium from the inlet section (21) to the interface section (22).

5. The device (1) according to claim 4, wherein, The delivery channel (13) tapers from the inlet section (21) to the interface section (22).

6. The device (1) according to one of the preceding claims, wherein The device (1) is configured to be connected to the nozzle element (10) and / or a device for providing pressurized cleaning medium by a plug-in mechanism.

7. The device (1) according to one of the preceding claims, wherein, The interface section (22) and / or the inlet section (21) includes a recess having a conical shape.

8. The device (1) according to one of the preceding claims, wherein, The inlet section (21) includes a part of a Luer lock for receiving a syringe or is configured to receive an outlet of a device for providing pressurized cleaning medium.

9. The device (1) according to one of the preceding claims, wherein, At least a part of the interface section (22) is made of a material having a hardness of 60 Shore D to 90 Shore D.

10. The device (1) according to one of the preceding claims, wherein, The device is configured such that the inlet section (21) is more rigid than the interface section (22).

11. The device (1) according to one of the preceding claims, wherein, The inlet section (21) is formed by a wall having a first wall thickness (D1), and the interface section (22) is formed by a wall having a second wall thickness (22), wherein the first wall thickness (D1) is different from the second wall thickness (D2).

12. The device (1) according to claim 11, wherein, The first wall thickness (D1) is between 0.5 mm and 7 mm, and the second wall thickness (D2) is between 0.1 mm and 1.5 mm.

13. The device (1) according to one of the preceding claims, wherein, The device (1) is at least tubular in cross-section.

14. The device (1) according to one of the preceding claims, wherein, The device (1) is at least partially formed of a thermoplastic elastomer.

15. A system comprising a nozzle element (10) of a dental tool and a device (1) according to one of the preceding claims.

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