Tool for switching dental tool tip between assembled state and disassembled state, and method for removing dental tool tip from dental instrument

Abstract

A tool (1) for switching a dental tool tip (10) between an assembled state and a disassembled state, the dental tool tip (10) being-partially arranged in an insertion region of a dental instrument (30) in the assembled state and-being removed from the insertion region of the dental instrument (30) in the disassembled state, the tool (1) comprising:-at least a first receiving section (31), the tool tip (10) has a first receiving section (31) configured to receive at least an insertion region of the dental instrument (30) and at least a part of the tool tip (10), and at least a first pushing element (11) configured to perform a first pushing movement, the first pushing element (11) causes a pushing movement (T) of the dental tool tip (10) for transferring the dental tool tip (10) from a first state to a second state when at least the insertion region and at least a part of the tool tip (10) are arranged in the first receiving section (31), the first state and the second state being different and being selected between an assembled state and a disassembled state.

Description

[0001] The present invention relates to a tool for converting a dental tool tip between an assembled state and a disassembled state, and a method for removing a dental tool tip from a dental instrument.

[0002] It is known in the prior art that dental instruments, such as scalers or powder gas injection devices, have a tool tip or nozzle element that can be attached to the handpiece of the dental instrument. Such tool tips are usually removable, and thus the dental instrument and the dental tool tip are configured to frequently replace the tool tip by attaching the tool tip to the dental instrument, such as the handpiece, and / or by removing the tool tip from the dental instrument. Such frequent replacement of the tool tip, which can even occur during dental treatment, may have a negative impact on the lifespan of the tool tip. In addition, it is difficult for the operator to attach the dental tool tip to the dental instrument because they need to apply sufficient force. However, this force needs to be applied in an appropriate manner, otherwise there is a risk of damaging the dental tool tip, the dental instrument, or even the operator. This is especially true when the dental tool tip is a tip tool tip, such as a scaler tip, for removing dental plaque, biofilm, and dental calculus from teeth.

[0003] In addition, the dental tool tip must be attached to the dental instrument in an appropriate manner. Otherwise, there is a risk that the dental instrument becomes loose during dental treatment, especially when the dental tool tip undergoes high-frequency oscillations and / or interacts with the teeth or the surface of the teeth.

[0004] In view of the above, it is an object of the present invention to provide a tool that simplifies the conversion of a dental tool tip between an assembled state and a disassembled state and improves the connection between the tool tip and the dental instrument.

[0005] This object of the present invention is achieved by a tool according to claim 1 and a method according to claim 15. Preferred embodiments are included in the dependent claims, the description, and the drawings. According to a first aspect of the present invention.

[0006] According to a first aspect of the present invention, there is provided a tool for converting a dental tool tip between an assembled state and a disassembled state, the dental tool tip:

[0007] - is partially disposed in an insertion region of a dental instrument in the assembled state, and

[0008] - is removed from the insertion region of the dental instrument in the disassembled state, the tool comprising:

[0009] -- at least a first receiving section configured to receive at least the insertion region of the dental instrument and at least a part of the tool tip, and

[0010] --at least a first actuating element configured to perform a first actuating movement, wherein, by performing the first actuating movement, the first actuating element causes a pushing movement of the dental tool tip for converting the dental tool tip from a first state to a second state when at least the insertion region and at least a part of the tool tip are arranged in the first receiving section, the first state and the second state being different and being selected between an assembled state and a disassembled state.

[0011] Contrary to tools known from the prior art, the present invention proposes to implement a first actuating movement that causes the first actuating element to cause a pushing movement for performing a conversion between a disassembled state and an assembled state. Thus, the present invention provides a solution for performing a conversion between an assembled state and a disassembled state. In particular, the first receiving section is intended to fix the insertion region, which is part of a dental instrument, in particular part of the distal end of a dental instrument, in a defined position such that, for example, the first actuating element entering the first receiving section can remove the dental tool tip by a simple pushing movement, in particular by pushing the dental tool tip into an assembled state or a disassembled state. Another advantage of using only the first actuating movement compared to pure manual insertion or removal is that the force and the extent of the movement can be finely adjusted, such that an exact attachment or removal process can be established.

[0012] Preferably, the tool tip is attached to the dental instrument via a press fit connection or a force fit connection. In particular, it has been shown that the tool is advantageous when the tool tip is attached to the dental instrument via a press fit connection or a force fit connection. In particular, the connection is achieved by a pure force fit connection, i.e., a force fit connector, such that for attaching or removing the dental tool tip, no screwing or form fit is required to fix the tool tip. However, in this case, a relatively high force must be applied to attach the dental tool tip to the insertion region to avoid the dental tool tip becoming loose during treatment. This is especially the case when the tool tip is made of a metal such as titanium. However, the tool can also be used to convert a plastic tool tip between an assembled state and a disassembled state.

[0013] Preferably, the actuating movement is a pure translational movement. In other words: by the actuating movement, only translation is caused without any rotation. The dental tip is only pushed and no rotation is caused on the dental tool tip.

[0014] In particular, it is provided that the dental tool tip and the dental instrument form a dental cleaner in the assembled state, wherein the tool tip is implemented by a needle-shaped and / or straight-extending tool tip. The straight-extending tool tip extends from a proximal end to its distal end and forms a pointed end at the distal end. Such a pointed tip represents a risk of the operator injuring himself, especially during the assembly of the tool at the dental instrument. The tool tip can also be at least partially or partially bent. In particular, the dental tip is configured to be attached to the dental instrument by a non-screwing mechanism. Preferably, the dental tool tip is attached to the dental instrument by a press-fit mechanism and / or a torque wrench mechanism.

[0015] Furthermore, the dental instrument includes a head segment having an insertion region. The insertion region is preferably formed as a channel that extends generally transversely to the head segment of the dental instrument, especially from a rear side to a front side. The front side faces the teeth when the dental tool is in operation, and the rear side is opposite to the front side. In order to attach the straight-extending tool tip, the tool tip needs to be inserted into the channel-shaped insertion region. Preferably, the insertion region has a constant cross-section extending in a direction transverse to the head segment. Thus, when the insertion region forms a channel extending through the head segment, the dental tool tip can be inserted by entering the insertion region via the rear side. In particular, the insertion region is formed as a bore extending through the head segment. Preferably, it is provided that the insertion region is part of the distal end of the dental instrument formed as a spherical or cylindrical piece. Preferably, the tool includes a first receiving segment configured to receive the part of the dental instrument including the insertion region.

[0016] In particular, it is provided that the driving motion of the first driving motion and the driving motion of the second driving motion are oriented along driving directions extending parallel to each other. Preferably, these driving motions are generally oriented in opposite parallel or parallel to each other. This allows for the provision of a compact tool. In particular, the second receiving segment is configured to accommodate at least the insertion region and the tool tip in the assembled state.

[0017] Preferably, it is provided that the first driving element includes an actuating segment and / or is coupled to an actuating device, wherein the actuating segment and / or the actuating device is configured to cause the first driving motion of the first driving element. Preferably, the same similarly applies to the second driving element. In particular, it is provided that the driving element is formed as a single piece, and the actuating segment of the single piece is a gripping portion or a segment similar to a gripping portion.

[0018] Furthermore, it is conceivable that the actuating device and / or the actuating segment is screwing or piston-like. This allows the operator to simply actuate to replace the tool tip. In addition, the actuating device or the actuating segment is configured to be actuated manually and / or by a driving device.

[0019] In particular, it is provided that the first receiving section and / or the second receiving section are configured such that the insertion region received in the first receiving section or the second receiving section extends along one of the pushing directions in the pushing direction.

[0020] Preferably, it is provided that the first receiving section and / or the second receiving section include means for fixing a dental tool tip and a part of a dental instrument. For example, it is conceivable that when the head section of the dental instrument is arranged inside the first receiving section and / or the second receiving section, a specific insertion movement of the head section of the dental instrument into a defined position is required. For example, the first receiving section may include a groove and / or a guiding region, wherein the dental tool tip inserted in the first receiving section and / or a part of the dental tool tip is pressed into the groove and / or the slotted guide and / or the channel such that the head section or a part of the dental instrument is aligned in a preferably defined manner, i.e., the fixed part of the dental instrument is oriented and arranged such that the position and orientation of the fixed part of the dental tool are always the same. In particular, the first receiving section and / or the second receiving section are arranged such that when the insertion region is inserted and / or fixed into the first receiving section and / or the second receiving section, the insertion region is flush with or aligned along a line having the following direction: the first pushing element moves along this direction during the first pushing movement. Thus, the moving first pushing element can contact the proximal end of the dental tool tip and push the proximal end into and / or out of the insertion region.

[0021] Preferably, it is provided that the tool is configured such that the first pushing element and / or the second pushing element act on the proximal end of the dental tool tip for performing the pushing movement. Thus, the first pushing element and / or the second pushing element are adapted to push and press the tool tip into place or remove the tool tip from the assembled state in the assembled state. Preferably, it is provided that the tool is configured such that for removing and attaching the tool tip, the first pushing element and the second pushing element perform a push that acts on the distal end of the tool tip. In particular, the first pushing element and / or the second pushing element move towards the rear side of the insertion region which is particularly configured as a channel for pushing the dental tool.

[0022] Preferably, it is provided that the first pushing movement is substantially parallel to the pushing movement. Thus, performing the first pushing movement does not require a complex pivoting or rotational movement of the first pushing element.

[0023] Preferably, it is provided that the first actuating element is configured to perform a first actuating movement when the first actuating element rotates about an axis parallel to the first actuating movement. In particular, this similarly applies to the second actuating element. For this purpose, the first actuating element and / or the second actuating element includes a thread that interacts with a corresponding thread at the inner side of the tool. Thus, the first actuating element can be rotated and in particular screwed into the tool for performing the first actuating movement. In particular, it is provided that the first actuating element includes a region, and the front region directly acts on the proximal end of the dental instrument. Preferably, it is provided that the first actuating element includes a gripping region, and the threaded region is located between the gripping region and the front region, wherein the front region contacts the proximal end of the tool tip. Preferably, it is provided that the first actuating movement performed by the first actuating element includes two sequences. In the first sequence, the first actuating element performs the first actuating movement without contacting the proximal end of the distal tip. In the second sequence of the first actuating movement, the first actuating element contacts the proximal end of the dental tool tip for pressing the proximal end into or out of the insertion region.

[0024] In other words: In the first sequence, there is actually no actuating action that causes the movement of the dental tip. This is particularly advantageous when the dental tool tip is introduced into the tool to allow the dental instrument with the dental tool tip to enter the first receiving section / second receiving section and then the assembled tool tip and the dental instrument are removed, when the first actuating element needs to be spaced apart from the dental tool tip. Otherwise, the first actuating element hinders the removal of the part of the dental instrument included in the first receiving section.

[0025] Preferably, it is provided that the tool includes a second receiving section for receiving at least a part of the dental tool tip, wherein the second receiving section is configured such that the dental instrument and the tool tip are arranged in a pre-assembled state in the second receiving section.

[0026] Preferably, it is provided that in addition to the shape of the dental instrument with the assembled tool tip, the shape of the first receiving section and / or the second receiving section is also adapted to the shape corresponding to the part of the dental instrument included in the first receiving section and the tool tip in the pre-assembled state. In this pre-assembled state, the tool tip is not fully attached to the insertion region. For example, the dental tool tip is loosely arranged in the insertion region, for example, loosely arranged in the insertion region by extending through a hole or opening forming the insertion region, which is formed at the distal end of the head section, but the tool tip extends out of the rear side of the insertion region, so that the tool tip in the pre-assembled state extends outside the insertion region at two opposite ends of the insertion region.

[0027] Furthermore, it is preferably provided that the first receiving section is formed to receive a dental tool tip extending straight. Thus, the shape of the first receiving section extends in a channel-like manner or at least follows the direction of straight extension. Thus, the tool tip can be pressed through the insertion area during assembly and disassembly.

[0028] Preferably, it is provided that the tool includes a capture area for capturing the disassembled dental tool tip when the dental tool tip is switched from the assembled state to the disassembled state. Thus, it can be avoided that the operator needs to capture or hold the tool tip during the disassembly process. Instead, the disassembled tool tip just falls into the capture area and can be removed by the operator after being switched from the assembled state to the disassembled state. Thus, the risk of damaging the tool tip or the operator is further reduced.

[0029] Preferably, it is provided that the tool includes a section for visually inspecting the wear state of the dental tool tip when the tool tip is inserted in the section, and / or includes a reference mark for inspecting the wear state of the dental tool tip. For example, the dental instrument includes a reference mark or a number of reference lines that allow comparison of the reference mark with the length of the tool tip. In the case where the tool tip does not extend to the reference line, the operator is informed that the tool tip may no longer be useful. Thus, the tool includes a section that is visually accessible to the operator, especially when the dental tool tip is switched from the disassembled state to the assembled state. In this case, the operator can not only perform the attachment process, but also utilize the situation where a part of the dental instrument and the tool tip are aligned in a defined manner to check whether the length of the tool tip is sufficient. Thus, an additional tool for checking the length of the tool tip is no longer required. Furthermore, the tool provides the tool tip in a defined manner such that the reference for checking the wear state is always the same and thus reliable.

[0030] Furthermore, it is provided that the tool is configured to remove another tool tip, preferably from another dental tool. For example, it can be envisaged that the tool is configured to also remove the nozzle element attached to the handpiece of the powder jet device. Thus, the tool can also be used to remove the nozzle element, i.e., another dental tool tip preferably from a completely different dental instrument. For example, the tool includes a recess and / or a slotted hole that can be pulled over other dental tool tips, and by generating a rotational or pivoting movement, the other tool tips can be removed from the handpiece of, for example, a powder gas jet device.

[0031] Furthermore, it is provided that the first actuating element and / or the second actuating element are configured to cause a driving force having a value between 5 N and 500 N, preferably between 25 N and 450 N, and most preferably between 50 N and 250 N. Thus, the tool tip made of metal can be mounted even in a proper and sufficient manner, especially without harming the operator and ensuring a sufficiently proper connection between the tool tip and the dental instrument.

[0032] Preferably, it is provided that the tool tip is disc-shaped and / or pen-shaped. In the case of a disc-shaped tool, especially if one of the first actuating elements is configured as a semi-disc-shaped part that rotates about an axis parallel to the first actuating movement and / or the actuating movement, an increased lever effect can be produced. A pen-shaped tool can be easily stored.

[0033] Preferably, it is provided that the tool includes a claw-shaped section that is particularly part of an end-opening wrench. In particular, the size and dimensions are configured such that the tool can also be used to interact with the bottom part of the powder chamber in a powder injection gas device. Thus, the tool can also be used, in particular, at a side different from the side with the first receiving section, the second receiving section, and the hole for removing another dental instrument, to remove the bottom plate of the powder chamber. Such a powder chamber can be opened to insert new powder into the powder chamber or use a new interior inside the powder chamber.

[0034] Furthermore, it is conceivable that the claw-shaped section is used to rotate an orifice intended to adapt the airflow entering the powder chamber.

[0035] Another aspect of the present invention is the use of the tool according to the present invention for removing a dental tool tip from a dental instrument, for attaching a dental tool tip to a dental instrument, and / or for opening a powder chamber. All the specifications and benefits discussed in the context of the tool similarly apply to the use, and all the specifications and benefits discussed in the context of the use similarly apply to the tool.

[0036] Another aspect of the present invention is a method for removing a dental tool tip from a dental instrument by using the tool according to the present invention, the method comprising:

[0037] - inserting a part of the dental instrument into the first receiving section, and

[0038] - performing a first actuating movement for converting the dental tool tip from a disassembled state to an assembled state. All the specifications and benefits discussed in the context of the tool similarly apply to the method of the present invention, and all the specifications and benefits discussed in the context of the method of the present invention similarly apply to the tool.

[0039] Another aspect of the present invention is a system of a tool according to the present invention and a dental instrument, which dental instrument is preferably a scaler, in particular an ultrasonic scaler having a straight extending needle-shaped tool tip. The specifications and benefits discussed in the context of the tool similarly apply to the system, and the specifications and benefits discussed in the context of the system similarly apply to the tool.

[0040] Where not explicitly described, without limiting or expanding the scope of the described invention, the various embodiments or their respective aspects and features may be combined or exchanged with one another, provided that such combination or exchange is meaningful and within the meaning of the present invention. Where applicable, the advantages described with respect to one embodiment of the present invention are also advantages of other embodiments of the present invention.

[0041] In the drawings:

[0042] Figure 1 is a tool for converting a dental tool tip between an assembled state and a disassembled state according to a first preferred embodiment of the present invention;

[0043] Figures 2a to 2f is a schematic illustration of converting a dental tool tip between an assembled state and a disassembled state by using the Figure 1 tool according to a first embodiment of the present invention;

[0044] Figure 3 is a tool for converting a dental tool tip between an assembled state and a disassembled state according to a second preferred embodiment of the present invention;

[0045] Figures 3a to 3c is a schematic illustration of converting a dental tool tip from an assembled state to a disassembled state by using the Figure 3 tool according to a second embodiment of the present invention;

[0046] Figures 4a to 4d is a schematic illustration of converting a dental tool tip from a disassembled state to an assembled state by using the Figure 3 tool according to a second embodiment of the present invention;

[0047] Figures 5a to 5c is a schematic illustration of opening a powder chamber by using the Figure 3 tool;

[0048] Figures 6a to 6d is a schematic illustration of using the Figure 3 tool for removing another dental tool tip.

[0049] Figure 1A tool 1 for converting a dental tool tip 10 between an assembled state and a disassembled state according to a first exemplary embodiment of the present invention is shown. The dental tool tip 10 is well-known and is attached to a dental instrument in the assembled state (the complete dental instrument is not shown in Figure 1 ). For example, the dental instrument is a scaler that performs ultrasonic movement of the head section 30 of the dental instrument. In the attached state, i.e., the assembled state, the tool tip 10 is attached to the head section 30 of the scaler. The tool tip 10 contacts or treats teeth during operation. Preferably, the dental tool tip 10 is attached to the dental instrument, in particular the head section 30 of the dental instrument, in a replaceable manner. The head section 30 preferably forms the distal end of the dental instrument. For example, the head section 30 or the distal end of the dental instrument is fixed to the handpiece via a screwing mechanism. In the figures presented herein, the tool tip 10 is attached to the head section 30 of the dental instrument in a force-fitting manner. In particular, the connection between the tool tip 10 and the dental instrument, in particular the head section 30 of the dental instrument, is achieved by a press-fit connection. In particular, it can be provided that there is no screwing mechanism for attaching the dental tool tip 10 to the dental instrument between the dental tool tip 10 and the dental instrument. Furthermore, the dental tool tip 10 extends straight and is attached to the head section 30 by forming an angle with the movement direction that moves along the head section 10 during the oscillation of the dental tool tip 10. Preferably, the angle between the movement direction and the extension of the straight tool tip 10 is about 30° to 60°, preferably between 40° and 60°, and most preferably between 40° and 50°.

[0050] Processing the dental tool tip 10 is accompanied by several challenges. In order to create a press-fit connection or a pure force-fitting connection between the head section 30 of the dental instrument and the dental tool tip 10, sufficient pressure, i.e., a certain force, must be applied to the dental tool tip 10. Otherwise, there is a risk that the assembled tool tip is not fixed firmly enough to remain attached during the oscillating movement, especially during the treatment of teeth. In addition, interacting with high forces results in a risk of damaging the dental tool tip 10. In particular, without applying force in an appropriate manner, deformation or cracks may occur, which may hinder the use of the tool tip 10.

[0051] Figure 1 The tool 1 for converting the dental tool tip 10 between the assembled state and the disassembled state supports the operator when the operator is interested in removing the tool tip 10 from the dental instrument and / or in attaching the dental tool tip 10 to the dental instrument.

[0052] In Figure 1In an exemplary embodiment, a transition is intended to be established both from an assembled state to a disassembled state and from a disassembled state to an assembled state. Preferably, the dental tool tip 10 is partially disposed in the insertion region of the dental instrument in the attached state and is preferably fixed to the insertion region in a force-fitting manner, particularly in a pure force-fitting manner. In particular, the insertion region is formed as a recess, particularly as a hole, which extends through the head section 30 of the dental instrument. The head section 30 preferably includes a distal end formed as a spherical or cylindrical member, and the insertion region is incorporated into the distal end of the spherical and / or cylindrical shape. In particular, the insertion region is configured such that the straight-extending dental tool tip 10 can enter the rear side of the insertion region and pass through the insertion region by offsetting the tool tip 10, and the pointed end of the dental tool tip 10 exits the front side of the insertion region opposite to the rear side. In other words: The insertion region is configured such that the needle-shaped and straight-extending tool tip 10 can be pushed through the insertion region until the assembled state is established.

[0053] In Figure 1 In an exemplary embodiment, the needle-shaped and straight-extending tool tip 10 is attached to the insertion region of the dental instrument in a pre-assembled state. In the pre-assembled state, the dental tool tip 10 has preferably passed through the insertion region, particularly the insertion region formed by a channel extending through the head section 30 of the dental instrument, but the dental tool tip 30 is not finally fixed to the head section 30 of the dental instrument. Instead, the dental tool tip 10 is loosely disposed in the insertion region and is not attached to the insertion region, for example, by a press-fit connection. To convert the tool tip 10 into an assembled state, a tool 1 is provided. The tool 1 includes a first receiving section 31 and a second receiving section 32. In addition, the tool 1 includes a body that includes the first receiving section 31 and the second receiving section 32. In particular, the body is divided into a first section 21 intended for attaching the dental tool tip 10 to the dental instrument and a second section 22 for removing the dental tool tip 10 from the dental instrument. In particular, the first receiving section 31 and the second receiving section 32 are incorporated into the body, which has a generally cylindrical shape. The body also includes flat lateral sides for improving the grip of the tool 1. To attach the dental tool tip 10 to the dental instrument, the pre-assembled dental tool tip 10 is inserted, particularly the insertion region of the instrument tool together with the pre-assembled dental tool tip 10, into the second receiving section 32. In particular, the second receiving section 32 is formed such that the inserted insertion region, including the pre-assembled dental tool tip 10, is oriented along a predetermined direction. In Figure 1 In an exemplary embodiment, the insertion process is not completed, and the insertion region and the tool tip 10 enter the opening of the second receiving section 32 for proper placement inside the tool 1. In particular, the tool 1 includes a channel-shaped section as the second receiving section 32 such that the dental tool tip 10 can extend mainly along the longitudinal direction of the tool 1.

[0054] In Figures 2a to 2g , the process of converting the tool tip 10 from the disassembled state to the assembled state is gradually illustrated. In Figure 2a , the dental instrument, i.e., the head section 30, is located at its defined and determined position. In this defined position, the dental tool tip 10 and / or the insertion area have a defined and unique, i.e., clear, orientation within the tool 1. In particular, the inner part of the channel forming at least a part of the second receiving section 32 is dimensioned such that the inserted head section can be placed in this area only in a defined manner. In particular, preferably, in order to insert the dental instrument into this position, in addition to the movement for inserting the head section, the entire pre-assembled arrangement of the insertion area and the dental tool tip is preferably offset along the longitudinal direction of the tool 1. In particular, the tool 1 includes a long / slotted hole that guides the dental instrument, especially the cylindrical-shaped section of the dental instrument, until the head section reaches its desired final position.

[0055] Preferably, the dental instrument cannot rotate about an axis extending generally parallel to the longitudinal direction. In other words: the dental instrument is prevented from rotating when the insertion process is completed. In addition, the head section, especially its distal end including the insertion area, abuts against the end of the channel forming the first receiving section 31, such that the movement of the head section is also restricted at least in one direction extending parallel to Figure 2a the longitudinal direction of the base body in the example of

[0056] In addition, the tool 1 includes a first pushing element 11 and a second pushing element 12. The first pushing element 11 is assigned to the first receiving section 31 for removing the tool tip 10 from the insertion area, and the second pushing element 12 is assigned to the second receiving section 21 for performing the assembly. As Figure 1 and Figures 2a to 2f illustrated in Figure 2aThe first driving movement and / or the second first driving movement in the embodiment correspond to a movement along the longitudinal direction of the body.

[0057] By screwing the second driving element 12 into the body, the front region of the second driving element 12 comes into contact with the proximal end of the tool tip 10. This is actually shown Figure 2b in the cross-sectional view in which the cross-sectional view shows the proximal end of the tool tip 10 in contact with the pin-shaped front region of the second driving element 12. In addition, Figure 2b it shows that the second driving movement is not completed in the Figure 2b situation illustrated. In particular, as Figure 2c shown, the second driving movement continues, and due to the contact between the front region of the second driving element 12 and the distal end of the dental tool tip 10, the second driving movement P causes a driving movement T of the dental tool tip 10, in particular a driving movement T along a direction parallel to the longitudinal direction of the body. In particular, the second driving element 11 and the dental tool tip 10 perform movements along the same direction corresponding to the directions of the second driving movement P and the driving movement T. In Figure 2c it, the second driving movement P is completed, and as shown, the tool tip 10 is attached to the head section 30 of the dental instrument.

[0058] In other words: The tool tip 10 has been converted from the disassembled state via the pre-assembled state to the assembled state, as Figure 2c shown. In fact, the front region of the second driving element 12 is dimensioned such that this front region is larger compared to the diameter of the proximal end of the dental tool tip 10 and / or the cross-section of the insertion region at the rear side. Therefore, it is not possible for the second driving element 12 to push the tool tip 10 such that the tool tip 10 is not in its proper position. In addition, the second driving element 12 is configured such that the second driving movement automatically stops when the second driving element 12 is in its completed state.

[0059] For example, the thread is dimensioned and configured such that it is not possible to rotate further when the front end region of the second driving element 12 reaches the insertion region of the head section 30 of the dental instrument. Therefore, it can be ensured that the needle-shaped tool tip 10 is not pushed too far into the insertion region.

[0060] Otherwise, this would result in an improper attachment of the tool tip 10 to the dental instrument. In Figure 2g ) it shows the second driving element 12 unscrewed from the final position in which the assembled state is reached. Therefore, the dental instrument, in particular the head section 30 with the assembled tool tip 10, can be removed from the tool 1, i.e., the dental instrument including the dental tool tip 10 can be removed from the second receiving section 32. This is shown Figure 2d in it.

[0061] In Figure 2e ) to Figure 2i ), the removal of the dental tool tip 10 is illustrated. In other words: Figure 2e ) to Figure 2i ) show the conversion of the dental tool tip 10 from the assembled state to the disassembled state. In this case, the head section 30 with the assembled dental tool tip 10 is inserted into the first receiving section 31. The first receiving section 31 and the second receiving section 32 are formed substantially similarly to each other and mainly form channels for inserting the head section 30, in particular for positioning the head section at least partially, preferably partially, within these channel-shaped first receiving sections 31 in a predetermined and defined position. For this purpose, Figure 1 and Figure 2a ) to Figure 2e ) the first receiving section 31 of the embodiment in includes a reduced cross-section into which the head section 30 is advanced or offset for fixing the head section 30 to impede rotation about a rotational axis extending parallel to the longitudinal direction. In addition, the head section 30 is inserted into the first receiving section 31 by a combination of a pushing movement and a pivoting movement, which aligns the dental tool tip 10 within the first receiving section 3131 in a direction following the channel, in particular in a direction parallel to the longitudinal direction of the body. In Figure 2f ), the first receiving section 31 is filled by the head section 30 with the assembled tool tip 10. In Figure 2g ), the first pushing element 11 moves along the pushing direction P during its execution of the first pushing movement. The first pushing movement is caused by rotating the first pushing element 11, and due to the threaded interaction section, the rotating first pushing element 11 is offset along the longitudinal direction for performing the first pushing movement along the pushing direction P. In Figure 2g ), the front region of the first pushing element 11 contacts the proximal end of the tool tip 10. In particular, the first pushing element 11 and the second pushing element 12 are distinguished from each other in terms of the shape of their front end / front region. The first pushing element 11 has a front region that has a smaller diameter compared to the diameter of the proximal end of the dental tool tip 10, in particular the diameter at the rear side of the insertion region. The rear side of the insertion region is defined as the side opposite to the front side facing the tooth during operation of the dental instrument. The front end region may also have a diameter equal to the diameter of the proximal end of the dental tool tip 1. In contrast, the diameter of the front end region of the second pushing element 12 is larger than the diameter of the proximal end of the dental tool tip 10 or the insertion region. Thus, the front end of the first pushing element 11 can and enters the insertion region by completing and continuing the first pushing movement, as Figure 2hAs illustrated, the first pushing movement of the first pushing element 11 can cause a pushing movement T of the dental instrument for converting the dental instrument from an assembled state to a disassembled state.

[0062] The first pushing movement pushes the dental tool tip 10 out of the insertion area. In particular, the tool 1 includes a box-shaped capture area 20 configured to receive the tool tip 10 removed from the insertion area of the head section 30 of the dental instrument. Thus, the operator can be prevented from having to contact the needle-shaped tool tip 10 during the removal process, and there is no risk of the tool tip 10 hitting the ground when it is removed from the dental instrument. This protects both the needle and the operator. Figure 1 The capture area 20 of the tool 1 illustrated in and in FIG. 2 is also used to check the wear state of the dental tool tip 10. For this purpose, the tool tip 10 arranged in the first receiving section 31 and / or the second receiving section 31 in the inserted state extends into the area of the capture area 20. In other words: the second receiving section 32 and the first receiving section 31 share a central section such that the tool tip 10 extends into this area when it is inserted in the first receiving section 31 or the second receiving section 32. By introducing a reference mark 40, it can be observed whether the attached tool tip 10 reaches this reference mark 40. In the case where the tool tip 10 does not extend to this reference mark 40, the wear state should prevent the operator from using the tool tip 10 again. In particular, the capture area 20 provides a visual access and / or a passage for the operator to remove the disassembled tool tip.

[0063] In Figure 3 is illustrated a tool 1 according to a second exemplary embodiment of the present invention. Contrary to Figure 1 the shape of the cylindrical base body in and in FIG. 2, the shape of the base body is disc-shaped. In particular, Figure 3 the tool of is formed by two generally semi-disc-shaped elements that can rotate relative to each other. Figure 3 also includes a first receiving section 31 or a second receiving section 32 for placing the dental instrument, in particular the head section of the dental instrument, inside the first receiving section 31 and / or the second receiving section 32. In order to fix the dental instrument in a defined position inside the first receiving section 31, a groove 5 is provided at the inner side of the first receiving section 31. In the inserted state, the dental instrument or the head section 30 is pressed into the groove 5. In particular, the tool tip 10 is partially pressed into this groove 5, for example.

[0064] Figure 3 illustrates the case where the head section 30 is inserted into the first receiving section 31. In addition, Figure 3The embodiment presents a first receiving section 31 having a shape that not only matches the insertion region, in particular the distal end of the head section 30, but also other parts of the head section, i.e., parts of the instrument device. In particular, the first receiving section 31 is mainly formed such that the entire head section 30 of the handpiece can be screwed thereon or at least 80% of the head section 30 can be arranged and fixed to the first receiving section 30, such that the first receiving section 31 surrounds the head section 30 at least on both sides. Thus, the arrangement of the tool tip 10 and the insertion region can also be defined and supported by the very individualized shape of the first receiving section 31, which is configured to receive and fix the head section 30. Figure 3a ) to Figure 3c ) shows the conversion of the tool tip 10 from the assembled state to the disassembled state. As also discussed in the context of Figure 1 and the embodiment of FIG. 2, the rotation of the first actuating element 12 causes the first actuating element 12 to push the dental tool tip 10 to perform a pushing movement T, which converts the dental tool tip 11 from the assembled state to the disassembled state. In the present case, the disc shape allows other functions to be incorporated into the tool 1 and additionally allows large forces to be generated or applied due to the increased leverage / torque during the rotational movement.

[0065] In Figures 4a to 4d the third exemplary embodiment of the invention is illustrated. The third exemplary embodiment mainly corresponds to a version of the second exemplary embodiment. However, in addition to the second exemplary embodiment, the second receiving section 32 further includes an additional section configured to receive the head section having the dental tool tip 10 in a pre-assembled state. Thus, the second receiving section 32 includes additional free space in the section at the proximal open end of the insertion region, i.e., the rear side of the insertion region, when the head section 30 is inserted into the second receiving section 32. Thus, the dental tool tip 10 and the dental instrument in the pre-assembled state can be inserted into the second receiving section 32. Thus, the tool tip 10 can be converted from the disassembled state to the assembled state by rotating the second actuating element 12, as, for example, discussed in the context of Figure 2a ) to Figure 2d )

[0066] As previously mentioned, Figure 3 and Figure 4a ) to Figure 4d) Embodiments include additional functions. In particular, the disc-shaped base body has segments shaped as claw-shaped segments, in particular claw-shaped segments forming part of an end-open wrench. The shape and dimensions of the end-open wrench or claw-shaped segment are adapted to the bottom of the powder chamber, such that the tool 1 can also be used, in particular by actuating a screwing mechanism, to remove the bottom segment or bottom plate 52 of the powder chamber 50 and, for example, to insert powder material and / or modify the interior of the powder chamber 50.

[0067] Figures 5a to 5c Shows how the bottom plate 52 can be reassembled or removed from the powder chamber 50.

[0068] Furthermore, Figures 6a to 6d Shows Figure 3 Another function of the tool 10 illustrated in FIGS. 4 and 5. In particular, the disc-shaped tool includes a recess 33 configured such that another dental tool tip from a different dental instrument 41 can be located inside the recess 33. In particular, the recess 33 is configured such that the recess 33 can be pulled onto another dental tool tip. In Figures 6a to 6d , the other dental tool tip is a nozzle element 38 attached to the handpiece of a powder spraying device. Such a powder spraying device provides a powder-gas mixture and a liquid exiting through the nozzle element illustrated here. The nozzle element is attached to the handpiece, in particular, by a T-slot 39. Thus, the nozzle element 38 can be removed by performing a secondary pushing movement T2 along the direction in which the T-slot extends. Although the T-slot produces a form-fit connection along a direction extending mainly perpendicular to the extension direction of the T-slot, the T-slot allows the removal of the nozzle element 38 via a corresponding movement along the extension direction of the T-slot. In Figure 6b , it shows how the tool 1 is pulled onto the nozzle element, while Figure 6c shows how the tool 1 is pulled by a pivoting movement R1 of the tool 1. Thus, the nozzle element 38 is forced to move along the secondary pushing movement direction T2 such that the nozzle element 38 can be removed from the handpiece of the powder spraying device. This is illustrated at least partially in Figure 6d .

[0069] Reference numerals:

[0070] 1 Tool

[0071] 5 Groove

[0072] 10 Tool tip

[0073] 11 First pushing element

[0074] 12 Second pushing element

[0075] 20 Capture area

[0076] 21 First segment

[0077] 22 Second section

[0078] 30 Head section

[0079] 31 First receiving section

[0080] 32 Second receiving section

[0081] 33 Concave part

[0082] 38 Nozzle element

[0083] 39 T-shaped groove

[0084] 40 Reference mark

[0085] 41 Different dental instruments

[0086] 50 Powder chamber

[0087] 52 Bottom plate

[0088] R1 Pivoting motion

[0089] P Pushing direction

[0090] T, T1 Pushing motion

[0091] T2 Secondary pushing motion

Claims

1. A tool (1) for converting a tip (10) of a dental tool between an assembled state and a disassembled state, the tip (10) of the dental tool: - being partially disposed in an insertion region of a dental instrument (30) in the assembled state, and - being removed from the insertion region of the dental instrument (30) in the disassembled state, The tool (1) comprises: -- at least a first receiving section (31) configured to receive at least the insertion region of the dental instrument (30) and at least a part of the tool tip (10), and -- at least a first pushing element (11) configured to perform a first pushing movement, wherein by performing the first pushing movement, the first pushing element (11) causes a pushing movement (T) of the dental tool tip (10) for converting the dental tool tip (10) from a first state to a second state when at least the insertion region and at least a part of the tool tip (10) are disposed in the first receiving section (31), the first state and the second state being different and selected between the assembled state and the disassembled state.

2. The tool (1) according to claim 1 further comprises a second receiving section (32), the second receiving section (32) being configured to receive at least the insertion region and at least a portion of the tool tip (10), the tool (1) further comprising a second actuating element (12), the second actuating element (12) being configured to perform a second actuating movement, wherein, By performing the second pushing movement, the second pushing element (11) causes a pushing movement for converting the dental tool tip (10) from the second state to the first state, wherein the second receiving section (32) is configured to convert the dental tool tip (10) from the first state to the second state when at least the insertion region of the dental instrument (30) and at least a part of the tool tip (11) are disposed in the second receiving section (32).

3. The tool (1) according to claim 2, wherein, The second receiving section (32) is configured to accommodate at least the insertion region and the tool tip (10) in the assembled state.

4. The tool (1) according to claim 2 or 3, wherein, The pushing movement of the first pushing movement and the pushing movement of the second pushing movement are oriented along pushing directions extending parallel to each other.

5. The tool (1) according to claim 4, wherein, The first receiving section (31) and / or the second receiving section (32) are configured such that the insertion region received in the first receiving section (31) or the second receiving section (32) extends along one of the pushing directions (P).

6. The tool (1) according to one of the preceding claims, wherein, The first pushing element (11) includes an actuating section and / or is coupled to an actuating device, wherein the actuating section and / or the actuating device are configured to cause the first pushing movement of the first pushing element (11).

7. The tool (1) according to claim 6, wherein, The actuating device and / or the actuating section are screwing or piston-like.

8. The tool (1) according to one of the preceding claims, wherein, The first receiving section (31) and / or the second receiving section (32) have a channel portion.

9. The tool (1) according to one of the preceding claims, wherein, The tool (1) includes a capture area (20) for capturing the disassembled dental tool tip (10) when the dental tool tip (10) is converted from the assembled state to the disassembled state.

10. The tool (1) according to one of the preceding claims, wherein, The tool (1) comprises a section (40) for visually inspecting the wear state of the dental tool tip (10) when the tool tip (10) is inserted into the section (40).

11. The tool (1) according to claim 10, wherein, The section (40) is part of the first receiving section (31) or the second receiving section (32).

12. The tool (1) according to one of the preceding claims, wherein, The first actuating element (31) and / or the second actuating element (32) are configured to cause a driving force having a value between 50 N and 250 N.

13. The tool (1) according to one of the preceding claims, wherein, The tool (1) is at least partially disc-shaped or pen-shaped.

14. The tool (1) according to one of the preceding claims, wherein, The tool (1) comprises a claw-shaped section (51).

15. A method for removing a dental tool tip (10) from a dental instrument (30) by using a tool (1) according to one of claims 1 to 13, the method comprising: - inserting the insertion region of the dental instrument (30) into the first receiving section (31), and - performing the first actuating movement for converting the dental tool tip (10) between the disassembled state and the assembled state.

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