Device for lubricating and optionally cleaning and disinfecting dental handpiece

Abstract

To provide a device for lubricating and optionally cleaning and disinfecting a dental handpiece.SOLUTION: A desktop device for cleaning, disinfecting and lubricating a dental handpiece comprises: an adapter 90 having a cylindrical shape; a connector 91 for contra angle handpiece provided at a first end of the adapter; and a Midwest connector 92 provided at a second end of the adapter. The adapter includes a spring 95, an axially mobile cylindrical portion 94 surrounded by the spring, and a shaft 93 coaxially inserted in the cylindrical portion. Components are surrounded by an outside housing of the adapter, the shaft rotates with respect to the cylindrical portion, the cylindrical portion and the shaft are engaged through screw connection guided by a threaded rod, and when the adapter is coupled to a contra angle handpiece, the shaft can be rotatably coupled with gears of contra angle handpiece.SELECTED DRAWING: Figure 9C

Description

Technical Field

[0001] The present invention relates to two tabletop devices, in a first simple embodiment for lubricating a dental handpiece and in a second more complex embodiment for cleaning, disinfecting and lubricating a dental handpiece. Specifically, such devices are provided with several innovative solutions that significantly improve the operability of the device by a human operator responsible for cleaning and disinfecting the dental handpieces used by patients.

Background Art

[0002] In the art, different types of rotary or vibratory handpieces, i.e., - Turbines (rotary handpieces), - Contra-angles (rotary handpieces), - Dental scalers (vibratory handpieces), mainly piezoelectric are known, which can be mounted on known dental treatment units or known independent tabletop units.

[0003] It is worth mentioning that vibratory handpieces do not need to be lubricated.

[0004] The above rotary and vibratory handpieces have several common features. - Such handpieces are equipped with accessories (tips, bars, prophy cups, etc.). - The above handpieces are supplied with water and electrical energy, and in the case of turbines, water, electrical energy, and air. - The above handpieces have internal channels for supplying water and optionally air, and cannot be reliably internally cleaned only by an autoclave.

[0005] To connect the above handpieces to a dental treatment unit or an independent tabletop device, a connection such as a plug and socket type 6-hole Midwest connection, which is a standard in the art, is often used.

[0006] The handpiece described above may be reused on multiple patients and must be disposed of after use on a single patient to prevent the transmission of infectious lesions from one patient to a subsequent patient (cross-infection). Specifically, the accessories are either disposable or autoclaved, and the handpiece is autoclaved separately from the accessories.

[0007] All of the following operations are performed by human operators. A typical workflow is: a) Disconnect the handpiece from the dental treatment unit or standalone desktop device. b) Removal of accessories from each handpiece, c) Manual cleaning of the outside of the above handpiece, d) If necessary, internal cleaning and disinfection of the handpiece. e) Lubrication of the handpiece f) Packaging of handpieces, g) Autoclave sterilization of the handpiece, That is the case.

[0008] In this technical field, substantially two types of devices have long been known for the maintenance of dental handpieces, and these can perform steps d) and e) of the workflow. - A first, simpler type of device capable of performing only the lubrication of the above-mentioned handpiece. For example, a document of prior art is Kaltenbach & Voigt's French Patent Application Publication No. 2340714, published in 1977. Such a document describes a tabletop device for the maintenance of medical instruments, particularly dental instruments, which is provided with a portable assembly accessory via a maintenance handpiece applied to the instrument, and which is connected to a large-capacity container holding a maintenance medium under pressure, such as oil, and includes a supply nozzle that can be opened and closed through a valve located on the maintenance handpiece. - A second, more complex type of device capable of lubricating, cleaning, and disinfecting the above-mentioned handpiece. For example, European Patent Application Publication No. 0056791 of Medical Engineering Consulting Grifo, published in 1982, describes a cleaning device for dental instruments, particularly turbines, using a liquid jet, disinfectant medium, and air, comprising a box-shaped container, a disinfectant medium, and air, and including a chamber having an inlet opening in the upper wall of the container, through which the instrument to be cleaned is introduced into the chamber by a jet of compressed air and water from a directed nozzle, and another nozzle, located in a separate chamber having an inlet orifice downstream of the nozzle, delivers a mixture of air and disinfectant medium to dry the instrument.

[0009] The above-mentioned lubricating device (hereinafter referred to as L-device for brevity), or cleaning, disinfection, and lubrication device (hereinafter referred to as CDL-device for brevity), is typically a tabletop device equipped with specific reservoirs for cleaning, disinfection, and lubrication.

[0010] Further prior art is found in German Patent Application Publication No. 19913945 by Kaltenbach & Voigt, which describes a device in which a handpiece is connected to a device inside a chamber closed by a lid, and a connection part provided for the handpiece is rotatable. Specifically, there is a first functional position in which the handpiece is pointed downward, and a second functional position in which the handpiece is rotated by an angle W1 of 45° to 90° relative to the first functional position, so that the handpiece can be more easily connected or disconnected by a human operator. The rotation is performed by an actuator connected to the lid, and as a result, when the lid is opened, the connection part automatically comes to the angled position W1.

[0011] Further prior art references include Kaltenbach & Voigt's U.S. Patent Application Publication No. 4486174, which describes a device for supplying cleaning and / or lubricating means contained in a pressurized container (aerosol can) connected to a dental handpiece. [Prior art documents] [Patent Documents]

[0012] [Patent Document 1] French Patent Application Publication No. 2340714 [Patent Document 2] European Patent Application Publication No. 0056791 [Patent Document 3] German Patent Application Publication No. 19913945 [Patent Document 4] U.S. Patent Application Publication No. 4486174 [Overview of the Initiative] [Problems that the invention aims to solve]

[0013] The present invention aims to provide two devices, an L device in the first embodiment and a CDL device in the second embodiment, that improve operability by human operators. [Means for solving the problem]

[0014] This objective is achieved by an apparatus having the features of the independent claims. Advantageous embodiments and improvements are described in detail in their dependent claims.

[0015] The device according to the present invention is provided in two embodiments. I. A first, simpler and less expensive embodiment L, which can lubricate only rotary handpieces (contra-angle and turbine). II. A second, more complex and expensive embodiment, CDL, capable of cleaning, disinfecting, and lubricating rotary and vibrating handpieces.

[0016] The L device and the CDL device have three independent innovative features. a) A mechanical block for connecting a (rotary and / or rotary or vibrating) handpiece, which can rotate about an axis parallel to the ground between two end positions, where the first end position is 0° and the second end position forms an angle in the range of 45° to 90° with respect to the first position. All connections rotate simultaneously through all intermediate positions between the 0° position and the 45° to 90° position. b) The housing of the spray can of the lubricating means is made to accommodate a standard 2.54 cm (1 inch) color spray can. c) Only the CDL device has an accessory for the contra angle that can be inserted between the Midwest connection of the contra angle and the connector for the handpiece and can rotate the internal gear of the contra angle.

[0017] It is particularly noteworthy that disinfection is applied to both the inside and outside of the handpiece, while cleaning and lubrication are only carried out inside the handpiece. A purge step via compressed air is provided between the steps of different treatments (cleaning, disinfection, lubrication), and this step is intended to empty the inside of the handpiece, or dry the outside of the handpiece, and prepare the handpiece for subsequent steps.

Advantages of the Invention

[0018] The first advantage of the present invention is associated with the rotation of the mechanical block for connecting the handpiece. By rotating the block between two end positions, the operability by the human operator inserting the handpiece into the connector can be significantly improved. The work becomes easier because the block can take any angle between the two end positions.

[0019] A second advantage of the present invention is that the standardization of lubricant spray cans allows many lubricants available on the market to be used for lubricating the handpiece. This yields two good results. First, it allows the use of specific lubricants specified by the handpiece manufacturer. Handpiece manufacturers conventionally provide lubricant cans containing special formulations for their handpieces, and often require the use of lubricants manufactured by their company as a condition for obtaining a warranty. Second, when CEFLA exports equipment worldwide, the spray cans can be sourced locally without CEFLA having to ship specific lubricants in shipments subject to regulations regarding flammable products.

[0020] A third advantage is that, for CDL embodiments only, provided by the contra-angle accessory, by rotating the internal gear of the contra-angle, the application of cleaning and disinfecting agents to the gear of the contra-angle can be greatly improved, thereby improving the cleaning and disinfection of the contra-angle.

[0021] Further advantages and characteristics of the present invention are disclosed in the following description, which provides a detailed explanation of exemplary embodiments of the invention with reference to the drawings. [Brief explanation of the drawing]

[0022] [Figure 1] This is an unequal-angle projection view of an L / CDL device with the front protective section closed. [Figure 2] This is an isometric projection of an L / CDL device with the front protective section open and the handpiece in the first end position. [Figure 3] This is an isometric projection of an L / CDL device with the front protective section open and the handpiece at the second end position. [Figure 4] This is a front view of the Midwest connector. [Figure 5] This is a list of examples of adapters for various connection points. [Figure 6] This is an isometric projection of an L / CDL device with the lid of a lubricant spray can open. [Figure 7A]This is a magnified view of the component that holds the spray can, as shown in the isometric projection drawing. [Figure 7B] This is a cross-sectional view of the housing portion of a spray can. [Figure 7C] These are isometric projections, front views, and top views, showing the detailed assembly and exploded views of the joint between the spray can and the connector. [Figure 8] This is an unequal-angle projection view of a sliding shelf. [Figure 9A] This is a side view of the accessory for connecting a contra-angle. [Figure 9B] This is a vertical cross-section of the accessory used to connect the contra-angle. [Figure 9C] This is an exploded view of the accessories for connecting a contra-angle, showing an unequal angle projection. [Figure 10] This is a diagram of the fluid pressure equation for lubrication device L. [Figure 11] This is a diagram of the fluid pressure equation for the cleaning, disinfection, and lubrication device CDL. [Modes for carrying out the invention]

[0023] Figure 1 shows the L device 100 / CDL device 200, comprising the main body 1 and the front protective section 2, in its closed position. The L100 / CDL200 device further includes an interface 8 for a human operator, which allows control of the device and, in the case of the CDL device 200, selection of the cycle to be executed (see below).

[0024] Figures 2 and 3 show the device L100 / CDL200 with the front protective section open. These figures show that the open front protective section allows access to multiple connectors 7, particularly a chamber 6 with four connectors 7, for connecting handpieces that need to be lubricated and, if applicable, cleaned and disinfected. The figures show two turbines 3, one contra-angle 4, and a dental scaler 5 for calculus removal.

[0025] It is worth mentioning that all connectors 7 are identical, allowing for seamless connection to any type of rotary or vibrating handpiece.

[0026] The connector 7 described above can be rotated up and down around an axis parallel to the ground, and is intended to facilitate the insertion of handpieces 3, 4, and 5 into the connector 7 by a human operator. Comparing Figure 2 and Figure 3, their two end positions, i.e. - The first position for connecting the handpiece, as shown in Figure 2, - Figure 3 shows a second operating position for lubricating, and possibly cleaning and disinfecting, the handpiece.

[0027] Naturally, the cleaning, disinfection, and lubrication operations are performed when the front protective section is closed, as shown in Figure 1.

[0028] The angle between the first and second end positions of the handpiece connector 7 ranges from 45° to 90°, and in a preferred embodiment, the angle is 52°. The acceptable positions are all positions within the contiguous range between the two end positions and between them.

[0029] The connectors 7 for handpieces 3, 4, and 5 are located on a cylinder, which rotates around its longitudinal axis parallel to the ground. All of the above connectors rotate simultaneously.

[0030] Figure 4 shows a front view of the screw-type Midwest connector 40. The Midwest connector is well-known in the art and is a standard in dental medicine (UNI EN 29168). The Midwest connector includes: - Drainage connector 41, - Connector 42 for cooling air (chip air), -Cooling water connector 43, - Power pneumatic connector 44, - Electrical contact connector 45, - Electrical contact connector 45 A system is in place.

[0031] The Midwest connection is the primary type of screw connection used in dental practice. Dental handpieces 3, 4, and 5 may have different coupling connections with channels for air, water, and electricity arranged in different ways, and as a result, the device L100 / CDL200 is equipped with a special adapter that allows handpieces with other types of connections to be lubricated, and in some cases, cleaned and disinfected.

[0032] Figure 5 shows an illustrative list of commercially available adapters 50 to be inserted between the Midwest connector 7 of device L100 / CDL200 and the connectors of single handpieces 3, 4, and 5. These commercially available adapters are not part of the present invention and will not be described further. The list is provided simply to remind you that dental handpiece connectors come in a variety of types. Handpiece manufacturers (e.g., KaVo, Sirona, W&H, NSK, Bien Air, Satelec, EMS, etc.) often provide their own connectors that are available for all handpieces they manufacture. It is worth mentioning that all vibrating handpieces require a special adapter 50 for insertion into the Midwest connector 7.

[0033] Figure 6 shows the device L100 / CDL200 with the side cover 60 open. The opening in the side cover 60 allows access to a lateral chamber that houses a lubricant spray can 61 and, in the CDL embodiment only, also houses a reservoir for cleaning agents and disinfectants (see below).

[0034] As shown in the figure, the spray can 61 is provided with a conventional tubular stem 62 for controlling the supply valve, but it does not have a conventional nozzle (actuator) that would allow the contents to be sprayed manually. The nozzle (not shown) of the spray can 61 is removable without tools. One of the features that improves the operability of the present invention is that, as described above, devices 100, 200 can be used to lubricate handpieces manufactured by any manufacturer. Thus, the end user can use any lubricant spray can provided with a standard 2.54 cm (1 inch) collar 63.

[0035] Typically, a spray can is provided with the collar 63, which is the sealing connection edge of the can lid to the can's supply valve. Typically, these valves are normally closed and can only be opened temporarily by the pressure acting on the tubular stem 62 toward the inside of the spray can. When the pressure acting on the tubular stem is released, the valve's flow path automatically closes. There is no need to delve into the details of the valve, as it is not the purpose of this invention. Nevertheless, the collar 63 is part of the structure of the spray can and is part of the combination with the features of this invention.

[0036] The use of a standard spray can with a 2.54 cm (1 inch) collar 63 is made possible by a special clamp 70 provided inside the main body 1 of the devices 100, 200, specifically for the spray can 61, and especially for the collar 63.

[0037] Figure 7 shows the clamp 70 for the lubricant spray can 61 inside the main body 1 of devices 100 and 200. Specifically, Figure 7A is an enlarged view of Figure 6, showing an isometric projection of the main body 1, and Figure 7B is a cross-sectional view of devices 100 and 200. Figure 7C shows various isometric projections, front views, and top views of the joint between the spray can 61 and its clamp 70 in assembled and exploded views, for the purpose of clarifying their relative positions and functions.

[0038] Figure 7A shows the position of a clamp 70 that holds a 2.54 cm (1 inch) collar 63 of a lubricating spray can 61. This connection is substantially made possible by an L-shaped clamp 70 having two branches 170, 270. Branch 170 is oriented perpendicular to the longitudinal axis of the spray can 61, and branch 270 is oriented parallel to the longitudinal axis of the spray can. Slots 370, 470 (better visible in Figure 7C) are obtained within the clamp 70 and extend to both branches 170 and 270 without interruption between the two portions 370, 470 provided on one of the two branches 170, 270. Branch 270 is parallel to the axis of the spray can and, in particular in the illustrated embodiment, is positioned, for example, vertically and is fixed to the body 1 of the devices 100, 200. The slot component 370 obtained on the branch portion 170 corresponds to the shape of the top of the spray can 61, and in particular to the collar 63 and stem 62, and this shape is taken along the diametrical cross-section and parallel to the axis of the spray can 61. The slot component 470 is connected without interruption to the component 370 on the lateral branch portion 170 of the clamp 70, is in particular parallel to the axis of the spray can, and is U-shaped, with the distance between the two U-shaped branches being equal to the width of the slot component 470 on the branch portion 270, and matches the collar 63 of the spray can. The closed arc portion of the U is closed by a semicircle substantially corresponding to the radius of curvature of the collar 63 of the spray can. It should be noted that the dimensions and radius of curvature are clearly suited to the shape of the top of the spray can, and in particular to the collar 63 and stem 62, in the sense that they are slightly larger than necessary to allow the spray can 61 to be freely inserted into the L-shaped clamp 70 through the above-mentioned components 370 and 470 of the slot. The component 470 of the slot on the vertical branch 270 is intended to allow the spray can 61 to be introduced into the component 370 of the slot on the branch 170 of the clamp by a simple parallel movement of the spray can in a direction perpendicular to the axis of the spray can. The component 370 of the slot located on the horizontal branch 170 of the clamp 70 holds the collar 63 of the spray can 61, and the component 370 of the slot overlaps the conical portion 65 of the spray can head, functioning as a head retainer.

[0039] The collar 63 is slightly larger than the lumen of the slot 70, and when the collar 63 is inserted into the slot 70, gravity holds the spray can 61 in place. Once the collar 63 is in place, the stem 62 without a nozzle protrudes above the slot and contacts the actuator 62.

[0040] An actuator 72 is positioned above the stem 62 of the spray can 61 (Figure 7B). The actuator 72 is pushed by compressed air from an electronic valve controlled by an electronic circuit board, which pushes the stem 63, creating a discharge port for the lubricant from the spray can 61, and the lubricant is then allowed to flow through the hole 71 into the tube.

[0041] Figure 8 shows the device CDL200 with a slide shelf 80 in the withdrawn position. The slide shelf 80 is provided with two slots, which hold two reservoirs 81 and 82, respectively, provided for cleaning and disinfection. Each reservoir 81 and 82 is provided with a pressure lid 83 and 84. The contents of the reservoirs 81 and 82 can be replenished directly using a container 85 in which the product is sold.

[0042] The shelf 80 slides out from the device CDL200 to replenish the product when the device 200 is not in use. The sliding shelf 80 slides laterally relative to the spray can 61 as shown in the figure.

[0043] Figure 9 shows a special adapter 90 for the contra-angle 4, which is conceptually similar to the adapter 50 shown in Figure 5. Specifically, Figure 9A shows the adapter 90 in a side view, Figure 9B shows the adapter 90 in a longitudinal section cut according to the plane AA shown in Figure 4, and Figure 9C shows the adapter in an asymmetrical projection exploded view.

[0044] The adapter 90 has a cylindrical shape, and a contra-angle connector 91 is provided at its first end, and a Midwest connector is provided at its second end, allowing the adapter 90 to be connected to any of the handpiece connectors 7. Figure 9C shows the internal components of the adapter, which includes a shaft 93, a component 94 that moves in the axial direction, and a spring 95.

[0045] In CDL Example 200 only, the insides of handpieces 3, 4, and 5 are first cleaned and disinfected, followed by lubrication (only for rotary handpieces), and within the internal channels of the handpieces, the cleaning agent taken from the cleaning agent reservoir 81 circulates first, followed by the disinfectant taken from the disinfectant reservoir 82 circulates.

[0046] In the case of an unlubricated vibrating handpiece, when the control for supplying lubricant is activated, the lubricant reaches all handpiece connectors 7, and the lubricant is discharged into the chamber 6 due to a hole in the adapter 50 that allows connection between the vibrating handpiece and the connectors 7.

[0047] In order to ensure that all lumens of the channels of the contra-angle 4 are thoroughly wetted with cleaning and disinfecting agents, the internal gear of the contra-angle must be rotated. This function is performed by the adapter 90.

[0048] The cleaning agent or disinfectant extracted by the respective reservoirs 81 and 82 is pushed into the adapter 90 along with compressed air. Specifically, the cleaning agent / disinfectant mixed with compressed air enters through the connector 42 of the Midwest connector and passes through the cavity formed by the mantle wall of the shaft 93 and the body of the adapter 90. The pressurized air pushes the moving part 94 forward, and the shaft 93 rotates due to the constraint of a radial pin (not shown) fixed to the shaft 93 and engaged with the helical groove 194 of the moving part 94. The moving part 94 is guided along an axial linear path toward the contra-angle connector 91 and pulled forward with a stroke of approximately 15 mm. The axial movement of the moving part 94, by the helical groove 194 and the radial pin of the shaft 93 engaged with the helical groove 194, determines the rotation of the shaft 93 by approximately one revolution. When the supply of compressed air is cut off, the spring 95 causes the shaft 93 to move approximately one full rotation backward in the opposite direction. These two rotations determine that the cleaning agent / disinfectant is more effectively dispersed onto the contra-angle gear.

[0049] Figure 10 shows a diagram of the fluid pressure configuration of device L100. Device L100 must be connected to an external compressed air source (input air) operating at 4 bar to 6 bar, and the compressed air is stabilized at a pressure of 4 bar via a pressure regulator 101, which also functions as a filter for the compressed air. Downstream of the pressure regulator, the compressed air is subdivided into two branches 102 and 103, the first branch 103 of which delivers compressed air directly to the handpiece for purging, and the second branch 102 which passes through a cylinder 104 that operates the actuator 72 and the lubricant spray can 61. The circuit further includes an oil sensor 121 and a pressure sensor 122.

[0050] The first group of electronic valves, 107, has one electronic valve per handpiece that controls the air for the spray channel, while the second group of electronic valves, 108, also has one electronic valve per handpiece that controls the main air line for the handpiece.

[0051] By appropriately opening and closing the electronic valves 105, 106, 107, and 108, lubricant can be supplied to the handpieces 3 inserted into the connector 7, and the handpieces are lubricated one by one in sequence. For simplicity, four turbines 3 are shown in the figure, but it is understood that any type of rotary handpiece can be installed. The lubricant passes through the rotary handpiece 3 and is released from the head of the handpiece and discharged into the chamber 6.

[0052] Figure 11 shows a diagram of the fluid pressure configuration of device CDL200. For simplicity, four turbines 3 are shown in this diagram as well, but it should be understood that any type of rotary or vibratory handpiece may be installed. With respect to lubrication, the CDL device 200 operates in the same manner as the L device 100 as described above.

[0053] Regarding the supply of cleaning and disinfecting agents inside the handpiece, even though the supply is by a pair of pumps 203 and 204, the CDL device 200 operates in a similar manner to the supply of lubricant. In this case as well, the cleaning and disinfecting agents are supplied sequentially to each handpiece one at a time in a mutually exclusive manner through the distributor 202. Before supplying the cleaning / disinfecting agent to each handpiece 3, the cleaning / disinfecting agent is supplied through three nozzles 205 located in the chamber 6, and at the same time, compressed air is supplied through two nozzles 207, also located in the chamber 6. The compressed air is intended to generate a swirling motion of the disinfecting agent, which is then sprayed onto the outer surface of the handpiece 3. The electronic valve 206 is intended to regulate the inflow of air to the nozzles 207. The electronic valve 208 is intended to regulate the inflow of air to the nozzles 205 and 207.

[0054] The distributor 202 selectively mixes compressed air from an external source with a lubricant from the spray can 61, a cleaning agent from the reservoir 81, or a disinfectant from the reservoir 82.

[0055] As described above, in the case of a vibrating handpiece, the lubricant is discharged through a special hole (not shown) in the adapter 50 and into the chamber 6.

[0056] A typical cycle for device L100 includes the following steps: a) After manually cleaning the outside of handpieces 3 and 4, a human operator inserts handpieces 3 and 4 into connector 7, and the human operator inserts adapter 50 as needed. b) A human operator closes the front protective section 2. c) Purge the internal channels of the handpiece with compressed air. d) Lubricate the air channels that supply air to the rotating parts of the handpiece. e) Purge all internal channels of the handpiece to remove excess lubricant. f) A human operator opens the front protective section 2 and removes the lubricated handpieces 3 and 4.

[0057] Typically, the CDL device 200 is pre-programmed to perform different lubrication, cleaning, and sterilization cycles as desired. Specifically, the CDL device 200 has four different pre-programmed cycles, namely, 1. Purge - Clean - Purge - Disinfect - Purge - Lubricate - Purge 2. Purge-wash-purge, 3. Purge-lubricate-purge, 4. Purge You can choose.

[0058] The most complex cycle 1 provided for device CDL200 comprises the following steps: a) After manually cleaning the outside of handpieces 3, 4, and 5, a human operator inserts handpieces 3, 4, and 5 into connector 7, and the human operator inserts adapter 50 or 90 as needed. a) A human operator closes the front protective section 2. b) A human operator selects a desired pre-programmed cycle via interface 8. c) Purge the internal channels of the handpiece with compressed air. d) Supply a cleaning agent to clean the outer surfaces of handpieces 3, 4, and 5. e) Supply cleaning agent to clean the internal channels of handpieces 3, 4, and 5. f) The cleaning agent may act for the time specified by its manufacturer. g) Purge the internal channels of the handpiece with compressed air. h) Disinfect the outer surface of the handpiece by spraying disinfectant onto the surface of the handpiece inside the chamber 6. i) Supply disinfectant solution to disinfect the internal channels of handpieces 3, 4, and 5. j) The disinfectant may be allowed to stand for the time specified by its manufacturer. k) Purge the internal channels of the handpiece with compressed air. l) Compressed air is supplied to the outside of handpieces 3, 4, and 5 to remove the disinfectant mentioned above. m) Lubricate the air channels that supply air to the rotating parts of handpieces 3 and 4. n) Purge all internal channels to remove excess lubricant. o) A human operator opens the front protective section 2 and removes the lubricated handpieces 3, 4, and 5.

[0059] To protect patient health, dental clinics have quality systems in place that provide records of treatments performed using reusable devices such as dental handpieces. Therefore, treatment devices are known to have internal memory capable of recording the cycles performed. Information regarding these cycles can be downloaded to a USB wand that can be connected to the L100 / CDL200 device. [Explanation of symbols]

[0060] 1. Device body 2 Front protection part 3 Turbines 4 Contra-angle 5. Dental scaler 6 Chambers 7 Connectors 8 Human Operator Interface 40 Midwest Connectors 41 Drainage connector 42 Air spray connector 43 Cooling water connector 44 Power Air Connector 45 Electrical connectors 46 Electrical connectors 50 adapter 60 Side cover 61 Lubricant spray can 62 Stem 63 Colors 65. The cone part of the spray can 70 color slots 71 Lubricant hole 72 Actuators 80 sliding shelf 81 Detergent Reservoir 82 Disinfectant reservoir 83. Lid of the cleaning agent 84. Disinfectant lid 85 Original container 90 Contra-angle adapter 91 Contra-angle connector 92 Midwest Connectors 93 Shaft 94 Axial moving part 95 springs 100 L device 101 Pressure Regulator 102 Branch for lubricant 103 Compressed air branch section 104 Cylinder 105 Electronic valve 106 Electronic valve 121 Oil Sensor 122 Pressure Sensor 170 horizontal branch 194 spiral grooves 200 CDL devices 201 Third Branch 202 Distributor 203 Pump 204 Pump 205 Nozzles 206 Electronic valve 207 Nozzles 208 Electronic valve 270 Vertical branches 370 horizontal slots 470 vertical slots

Claims

1. 1. A tabletop device (200) for cleaning, disinfecting, and lubricating dental handpieces, the device comprising a connector (7) for inserting a dental handpiece (3, 4, 5) placed in an openable chamber (6), the connector having a Midwest connection, and the device also comprising a contra-angle adapter (90) to be inserted between a contra-angle (4) and the connector (7), the adapter (90) having a cylindrical shape, a contra-angle connector (91) at a first end, and a Midwest connector (92) at a second end. The adapter (90) - a spring (95), - an axially moving cylindrical part (94) surrounded by said spring (95), a shaft (93) inserted coaxially within said cylindrical portion (94), The components (93, 94, 95) are enclosed by an outer housing of the adapter (90); - said shaft (93) rotates relative to said cylindrical portion (94); - said cylindrical portion (94) and said shaft (93) engage via a threaded connection guided by a threaded rod; - a tabletop device (200) characterized in that, when said adapter (90) is coupled to a contra-angle (4), said shaft (93) can be rotatably coupled to a gear of said contra-angle (4).

2. 2. The tabletop device (200) for cleaning, disinfecting and lubricating dental handpieces (3, 4, 5) according to claim 1, wherein when compressed air passes through the adapter (90), the shaft (93) rotates, allowing for better distribution of cleaning agent / disinfectant on the internal gear of the contra-angle (4).

3. 3. A tabletop device (200) for cleaning, disinfecting and lubricating dental handpieces (3, 4, 5) according to claim 1 or 2, wherein the axially moving cylindrical part (94) is provided with a spiral groove (194) on its outer mantle wall and is constrained to the shaft (93) via a pin, the shape of the spiral groove (194) determining the number of rotations made by the shaft (93) under the influence of compressed air.

4. 4. A tabletop device (200) for cleaning, disinfecting and lubricating dental handpieces (3, 4, 5) according to any one or more of claims 1 to 3, wherein an adapter (50) is inserted between the handpiece (3, 4, 5) and the connector (7) when the handpiece (3, 4, 5) is not provided with a Midwest connector.

5. 5. A benchtop device (200) for cleaning, disinfecting and lubricating dental handpieces (3, 4, 5) according to any one or more of claims 1 to 4, wherein the rotary handpiece is selected from the group consisting of a turbine (3) and a contra-angle (4), and the vibratory handpiece is a dental scaler (5).

6. The circuit - a compressed air inlet; a pressure stabilizer (101), a first branch (103) provided with an electronic valve (106) connected directly to said connector (7) for a dental handpiece; a second branch (102) provided with an electronic valve (105) connected to said connector (7) for the dental handpiece through a hole (71) supplying a lubricating means contained in a spray can (61); 6. A tabletop device (200) for cleaning, disinfecting and lubricating dental handpieces (3, 4, 5) according to any one or more of claims 1 to 5, wherein opening and closing of the electronic valves (103, 106) selectively supplies compressed air alone or compressed air mixed with a lubricating means to the handpieces (3, 4), and the lubricant that passes through the handpieces (3, 4) is finally discharged into the chamber (6).

7. 7. The tabletop device (200) for cleaning, disinfecting, and lubricating dental handpieces (3, 4, 5) according to claim 6, wherein a hole in the adapter (50) discharges the lubricant directly into the chamber (6) without passing it through the vibrating handpiece (5).

8. The circuit further comprises the components as defined in claim 6 , a further branch (201) provided with an electronic valve (206) connected to a special nozzle (205); a cleaning agent reservoir (82) actuated by a pump (204); a disinfectant reservoir (81) actuated by a pump (203), 8. A tabletop device (200) for cleaning, disinfecting and lubricating dental handpieces (3, 4, 5) according to claim 6 or 7, wherein opening and closing of the electronic valves (105, 106, 206) selectively supplies lubricant, cleaning agent and disinfectant drawn from the respective reservoirs (61, 82, 81) to the handpiece.

9. 9. The tabletop device (200) for cleaning, disinfecting and lubricating dental handpieces (3, 4, 5) according to claim 8, wherein the circuit further comprises, in addition to the components of claim 8, a nozzle (205) arranged in the chamber (6) for supplying a cleaning agent / disinfectant to the outside of the handpiece (3, 4, 5), and a nozzle (207) also arranged in the chamber (6) for supplying compressed air into the chamber (6) to generate a swirling movement of the cleaning agent / disinfectant.

10. 10. A tabletop device (100) for lubricating or a tabletop device (200) for cleaning, disinfecting and lubricating dental handpieces (3, 4, 5) according to any one or more of claims 1 to 9, wherein the device comprises a USB slot for connecting to a USB wand provided for downloading data relating to the lubrication cycle or cleaning, disinfecting and lubrication cycles performed on the handpiece (3, 4, 5).

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