Multi-motor dental handpiece device and dental instrument

Abstract

The utility model relates to a multi-motor dental handpiece device and a dental instrument. The utility model relates to a multi-motor dental handpiece device which comprises a plurality of groups of dental handpieces, a plurality of motors and a plurality of motors, the water-gas assembly comprises a water path flow path and a gas path flow path; the water path flow path is divided into a plurality of water flow branches, and the gas path flow path is divided into a plurality of gas flow branches; the water-air control assembly comprises a plurality of air pressure switches and a plurality of electromagnetic valves which are arranged on the air path flow path, and water-air switches which are arranged on the water flow branch path and the air flow branch path; a driving box; and the driving box receives a signal of the air pressure switch, jumps to a corresponding working signal and sends the working signal to the corresponding electromagnetic valve and the motor to control the working of the electromagnetic valve and the motor. According to the multi-motor dental handpiece device disclosed by the utility model, a plurality of groups of motors are respectively and independently used for controlling the dental handpieces, so that various handpieces can be flexibly applied in the same operation, and the waiting time caused by replacing the dental handpieces in the operation process is shortened.

Description

Technical Field

[0001] This utility model relates to the field of dental medical devices, and in particular to a multi-motor dental handpiece device and dental instrument. Background Technology

[0002] With societal development, dental techniques have become increasingly advanced. Dental handpieces, as commonly used oral medical instruments, are used for drilling, cutting, grinding, and polishing teeth. Dental handpieces are generally divided into high-speed and low-speed types. High-speed handpieces are typically driven by a high-speed turbine, resulting in higher rotational speeds but lower torque, while low-speed handpieces can generate greater torque. Routine dental surgeries, such as cleaning, extraction, preparation, polishing, and restorations, usually require different dental handpieces. However, most dental electric motors on the market are single-motor designs, allowing only one handpiece to operate, which is insufficient for complex procedures. During the same surgery, dentists may use multiple handpieces with varying rotational speeds. Having only one motor forces dentists to frequently change handpieces during the procedure, causing inconvenience. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a multi-motor dental handpiece device. By setting multiple sets of motors to control the dental handpieces individually, multiple handpieces can be flexibly used in the same surgery, reducing the waiting time caused by changing dental handpieces during the surgery.

[0004] Another objective of this invention is to provide a dental instrument equipped with a multi-motor dental handpiece, which can meet most application scenarios in dental treatment and has strong applicability.

[0005] A multi-motor dental handpiece device, comprising:

[0006] Multiple sets of dental handpieces, each set of dental handpieces is equipped with a motor and configured with a working mode;

[0007] A water-air assembly includes a water flow path and an air flow path; the end of the water flow path is divided into several water flow branches, and the end of the air flow path is divided into several air flow branches; one of the water flow branches and one of the air flow branches are simultaneously connected to a water-air pipe of a motor.

[0008] The water-air control assembly includes a plurality of pressure switches and a plurality of solenoid valves disposed on the air flow path corresponding one-to-one with the dental handpiece, and water-air switches disposed on the water flow branch and the air flow branch; the pressure switches are used to detect air pressure signals and convert them into level signals to identify the dental handpiece being used; the solenoid valves are connected one-to-one with the water-air switches to control the opening or closing of the corresponding water-air switches to control the conduction and cutoff of the corresponding water flow branch and the air flow branch;

[0009] The drive box is connected to the pneumatic switch, the solenoid valve, and the motor. When any dental handpiece is in use, the corresponding pneumatic switch detects the pneumatic signal and outputs an electrical level signal. The drive box receives the electrical level signal from the pneumatic switch to identify the dental handpiece in use and outputs a corresponding working signal to the corresponding solenoid valve and the motor to control the operation of the solenoid valve and the motor.

[0010] Furthermore, the drive box is provided with a motor drive circuit and a switching circuit. The input terminal of the switching circuit is connected to the motor drive circuit, and its output terminal is connected to each of the motors respectively, so that the motor drive circuit is connected to different motors.

[0011] Furthermore, the water and air control component also includes a dual-control foot pedal, which is located at the input end of the water flow path and the air flow path to control whether the water flow path and the air flow path are connected.

[0012] Furthermore, the drive box is also equipped with a pressure sensor.

[0013] The air path is also equipped with a second diversion valve, one of the output terminals of which is connected to the air pressure sensor to detect the status of the water-air dual-control foot pedal.

[0014] Furthermore, an airflow regulating valve is provided between the other output end of the second diverter valve and the input end of the airflow branch to regulate the airflow rate entering the airflow branch.

[0015] Furthermore, the air path is also provided with a first diverter valve and a bracket. The input end of the first diverter valve is connected to the output end of the airflow in the water-air dual-control foot pedal. One output end of the first diverter valve is connected to the bracket, and the other output end is connected to the second diverter valve.

[0016] The hanger has several parallel handle positions for placing the dental handpiece and is connected to the pneumatic switch respectively; each handle position is equipped with a hanger valve to open or close the airflow passage between the handle position and the pneumatic switch.

[0017] Furthermore, the water flow path is equipped with a water flow regulating valve, which is located between the water-air dual-control foot pedal and the water flow branch, and is used to regulate the water flow rate entering the water flow branch.

[0018] Furthermore, the water-air switch is a diaphragm valve, which simultaneously controls the opening and closing of the water flow branch and the air flow branch connected to the same motor.

[0019] Furthermore, the dental handpieces described in the multiple sets are one or more of a first dental handpiece, a second dental handpiece, and a third dental handpiece;

[0020] The first dental handpiece is equipped with a first motor and a first handpiece body with an internal water channel;

[0021] The second dental handpiece is equipped with a second motor and a second handpiece body with a root canal file;

[0022] The third dental handpiece is equipped with a third motor and a third handpiece body with an external water channel for providing sterile water.

[0023] A dental instrument, comprising: the multi-motor dental handpiece device described in this utility model.

[0024] The beneficial effects of this utility model are as follows:

[0025] (1) By setting up multiple sets of dental handpieces that are individually controlled by motors, multiple handpieces can be used flexibly in the same operation, reducing the waiting time caused by changing dental handpieces during the operation.

[0026] (2) By setting up a water and air control component in conjunction with a drive box, it can automatically identify the dental handpiece currently being used by the doctor and switch to the pre-set working mode to work;

[0027] (3) By using an air pressure sensor inside the drive box to detect the status of the water and air dual-control foot pedal of the dental instrument, the original water and air dual-control foot pedal of the dental instrument can be used for control without the need to add an extra foot pedal, thus simplifying the installation of the multi-motor dental handpiece device.

[0028] (4) By setting a switching circuit, the motor drive circuit and the corresponding motor are connected to replace the traditional control method of multiple motor drive circuits driving multiple motors, which simplifies the circuit structure and saves costs.

[0029] (5) By setting up a sterile water assembly with a peristaltic pump and combining it with a third dental handpiece with an external water channel, sterile surgeries such as sterile tooth extraction can be achieved.

[0030] (6) By setting up a first dental handpiece with an internal water channel, a second dental handpiece with a root canal file, and a third dental handpiece with an external water channel, it can meet most application scenarios in dental treatment and has strong applicability.

[0031] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0032] Figure 1 A schematic diagram of the water vapor assembly provided in the embodiments of this application. Figure 1 ;

[0033] Figure 2 A schematic diagram of the water vapor assembly provided in the embodiments of this application. Figure 2 ;

[0034] Figure 3 This is a schematic diagram of a multi-motor dental handpiece device provided in an embodiment of this application.

[0035] In the diagram: 10-Dental handpiece; 110-Water / air pipe; 111-First water / air pipe; 112-Second water / air pipe; 113-Third water / air pipe; 21-Water flow path; 211-Main water inlet; 212-Water flow branch; 2121-First water flow branch; 2122-Second water flow branch; 2123-Third water flow branch; 213-Water flow regulating valve; 22-Air flow path; 221-Main air inlet; 222-Air flow branch; 2221-First air flow branch; 2222-Second air flow branch; 2223-Third air flow branch; 223-First diverter valve; 224-Second diverter valve; 225-Hanger; 226-Handle position; 227-Hanger valve; 2271-First hanger valve ; 2272-Second hanger valve; 2273-Third hanger valve; 228-Airflow regulating valve; 31-Water and air dual-control foot pedal; 32-Air pressure switch; 321-First air pressure switch; 322-Second air pressure switch; 323-Third air pressure switch; 33-Solenoid valve; 331-First solenoid valve; 332-Second solenoid valve; 333-Third solenoid valve; 34-Water and air switch; 341-First water and air switch; 342-Second water and air switch; 343-Third water and air switch; 40-Driver box; 41-Input interface; 42-Output interface; 43-Motor drive circuit; 44-Switching circuit; 45-Stepper motor drive circuit; 46-Air pressure sensor; 50-Control box; 60-Sterile water assembly. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Routine dental surgeries, such as cleaning, extraction, preparation, polishing, and restoration, require different dental handpieces. Currently available dental electric motors are generally single-motor type, allowing only one handpiece to operate, which is insufficient for complex procedures. Since dentists may use multiple handpieces with different speed ratios during the same surgery, having only one motor forces them to frequently change handpieces, causing inconvenience.

[0040] Based on this, the present application provides a multi-motor dental handpiece device. By setting up multiple sets of dental handpieces controlled by separate motors, multiple handpieces can be flexibly used in the same surgery, reducing the waiting time caused by changing handpieces during the surgery.

[0041] Please see Figure 1-3This embodiment provides a multi-motor dental handpiece device, including: multiple sets of dental handpieces 10, a water-air assembly, a water-air control assembly, and a drive box 40. The water-air assembly is used to supply water and air to each set of dental handpieces 10. The drive box 40 is used to receive detection signals from the water-air control assembly and issue control commands to control whether the water and air are connected to each individual dental handpiece 10. Each set of dental handpieces 10 has an individually controlled motor and is set with a specific working mode. The water-air assembly includes a water flow path 21 and an air flow path 22. The end of the water flow path 21 is divided into several water flow branches 212, which are connected to the water-air pipes 111 of the motor. The end of the air flow path 22 is divided into several air flow branches 222, which are connected to the water-air pipes 111 of the motor. That is, a water flow branch 212 and an air flow branch 222 are simultaneously connected to the water-air pipes 111 of the motor.

[0042] The water-air control assembly includes several pressure switches 32 and several solenoid valves 33, each corresponding to a dental handpiece 10, located on the air flow path 22, and water-air switches 34 located on the water flow branch 212 and the air flow branch 222. The solenoid valves 33 are connected to the water-air switches 34 in a one-to-one correspondence to control the opening and closing of the corresponding water flow branch 212 and air flow branch 222. The pressure switches 32, solenoid valves 33, and motors are all signal-connected to the drive box 40. When any dental handpiece 10 is in use, the corresponding pressure switch 32 detects the air pressure signal and outputs a level signal. The drive box 40 receives the level signal from the pressure switch 32 and outputs a corresponding operating signal to the corresponding solenoid valve 33 and motor, thereby controlling whether the corresponding water and air paths are open via the solenoid valves 33, and simultaneously controlling the motor to operate with set parameters.

[0043] Specifically, when the corresponding dental handpiece 10 requires water and air, the drive box 40 controls the solenoid valve 33 to open, allowing airflow to pass through the water and air switch 34, thus opening the switch. At this time, the airflow branch 222 and the water flow branch 212 are connected to supply water and air to the dental handpiece 10. When the corresponding dental handpiece 10 does not require water and air, the drive box 40 controls the solenoid valve 33 to close, at which time the water and air switch 34 is closed, and the airflow branch 222 and the water flow branch 212 are cut off.

[0044] It should be noted that in this embodiment, the water-gas switch 34 is a diaphragm valve, which controls the opening or closing of the valve by air pressure. One control channel can control multiple valves at the same time. In this embodiment, one control channel controls two valves, that is, it simultaneously controls the conduction and cutoff of the water flow branch 212 and the air flow branch 222 connected to the same motor.

[0045] It is understood that, as a preferred embodiment, the number of water flow branch 212, air flow branch 222, air pressure switch 32, solenoid valve 33, and water-air switch 34 are all the same as the number of dental handpieces 10 and correspond one-to-one, so as to realize individual control of water and air for each dental handpiece 10, thereby enabling multiple dental handpieces 10 to be switched at will.

[0046] Furthermore, the drive box 40 is provided with several input interfaces 41 and several output interfaces 42. The pneumatic switch 32 is connected to the input interface 41, and the solenoid valve 33 is connected to the output interface 42.

[0047] Furthermore, in some embodiments, the drive box 40 has a separate operating mode for each dental handpiece 10. The drive box 40 is provided with a motor drive circuit 43 and a switching circuit 44. The input terminal of the switching circuit 44 is connected to the motor drive circuit 43, and its output terminal is connected in parallel to each motor. After detecting the signal of the air pressure switch 32, the drive box 40 determines the operating mode of the dental handpiece 10 corresponding to the air pressure switch 32, and then switches the motor drive circuit 43 to the corresponding motor output through the switching circuit 44 so that the motor drive circuit 43 drives different motors. The drive box 40 also controls the corresponding solenoid valve 33 to open or close.

[0048] In some embodiments, the multi-motor dental handpiece 10 device also includes a control box 50 for easy human-machine interaction and motor operating parameter setting. The control box 50 has a separate operating mode for each motor, and each operating mode has parameters for the dental handpiece 10 operation, such as speed, speed ratio, motor rotation direction, water source selection, atomizing air pressure switch, and coolant flow rate. The parameters configured on the control box 50's interface are communicated with the driver box 40 via a serial communication method using an RS232 hardware interface, enabling the sending of interface settings and the uploading of the driver box 40's operating status. In this configuration, the driver box 40 receives the level signal output by the air pressure switch 32 and uploads it to the control box 50. The control box 50 identifies the dental handpiece 10 corresponding to the level signal and automatically switches to the corresponding operating mode. This eliminates the need for manual mode adjustment or handpiece type change during use, reducing surgical waiting time and the risk of cross-infection.

[0049] Please see Figure 1 and Figure 2Furthermore, in some embodiments, the initial end of the water flow path 21 is provided with a main water inlet 211 for connection to an external water path; the initial end of the air flow path 22 is provided with a main air inlet 221 for connection to an external air path. The water-air control assembly also includes a water-air dual-control foot pedal 31, which is located at the input ends of the water flow path 21 and the air flow path 22, and simultaneously controls the input of external airflow and external water flow.

[0050] Understandably, the driver box 40 is equipped with a foot pedal interface for signal connection with the water and air dual-control foot pedal 31, receiving the pedaling signal from the water and air dual-control foot pedal 31 to determine whether water and air are introduced.

[0051] Furthermore, in some embodiments, the drive box 40 is also equipped with a pressure sensor 46 for monitoring whether water and air are introduced and for determining the status of the water-air dual-control foot pedal 31. Specifically, the air flow path 22 is also equipped with a second diverter valve 224, one output of which is connected to the pressure sensor 46. The pressure sensor 46 detects whether the input of the air flow path 22 is open to determine whether the water-air dual-control foot pedal 31 is being stepped on. An airflow regulating valve 228 is provided between the other output of the second diverter valve 224 and the input of several airflow branches 222 for regulating the airflow entering the airflow branches 222.

[0052] Furthermore, in some embodiments, the air path 22 is also provided with a first diverter valve 223 and a bracket 225. The first diverter valve 223 is connected to the output end of the air path of the water-air dual-control foot pedal 31. One output end of the first diverter valve 223 is connected to the bracket 225, and the other output end is connected to the second diverter valve 224, so that part of the airflow is transmitted to the end via the first diverter valve 223, and the other part is transmitted to the bracket 225 to trigger the air pressure switch 32 to identify the usage status of the dental handpiece 10.

[0053] Furthermore, the hanger 225 has several handle positions 226 for corresponding placement of dental handpieces 10, and each is connected to a pressure switch 32. Each handle position 226 is equipped with a hanger valve 227 to open or close the airflow passage between the handle position 226 and the pressure switch 32. When a dental handpiece 10 is used, the hanger valve 227 of the corresponding handle position 226 opens, the pressure switch 32 detects the air pressure signal, converts it into an electrical signal, and transmits it to the drive box 40. The drive box 40 uploads the electrical signal to the control box 50. The control box 50 receives the electrical signal, identifies the corresponding dental handpiece, and switches to the corresponding working mode and sends it to the drive box 40. The drive box 40 responds and controls the corresponding motor and solenoid valve 33 to work.

[0054] Furthermore, the water flow path 21 is also equipped with a water flow regulating valve 213, which is located between the water and air dual-control foot pedal 31 and the water flow branch 212, and is used to regulate the water flow rate entering the water flow branch 212.

[0055] Furthermore, in some embodiments, the dental handpiece 10 is also provided with an illumination module. Correspondingly, the drive box 40 is provided with an illumination drive circuit. When the dental handpiece 10 is changed, the illumination drive circuit is also switched to be connected to the corresponding motor through the switching circuit 44, which will not be described in detail here.

[0056] The following is combined Figure 1-3 The example illustrates the working principle of a multi-motor dental handpiece device.

[0057] Specifically, the water flow path 21 is divided into a first water flow branch 2121, a second water flow branch 2122, and a third water flow branch 2123 at its end; the air flow path 22 is divided into a first air flow branch 2221, a second air flow branch 2222, and a third air flow branch 2223 at its end. The first water flow branch 2121 and the first air flow branch 2221 are connected to the first water-air pipe 111, and the first water flow branch 2121 and the first air flow branch 2222 are connected to each other. The device 21 is equipped with a first water-air switch 341; a second water flow branch 2122 and a second air flow branch 2222 are connected to a second water-air pipe 112; a second water-air switch 342 is installed on the second water flow branch 2122 and the second air flow branch 2222; a third water flow branch 2123 and a third air flow branch 2223 are connected to a third water-air pipe 113, and a third water-air switch 343 is installed on the third water flow branch 2123 and the third air flow branch 2223. The first water-air pipe 111, the second water-air pipe 112, and the third water-air pipe 113 are respectively connected to different dental handpieces for supplying water and air to the corresponding dental handpieces.

[0058] The mounting bracket 225 is correspondingly provided with a first handle position, a second handle position, and a third handle position. Each of the three handle positions 226 is equipped with a first mounting bracket valve 2271, a second mounting bracket valve 2272, and a third mounting bracket valve 2273, respectively. Several pneumatic switches 32 are defined as a first pneumatic switch 321, a second pneumatic switch 322, and a third pneumatic switch 323, respectively. The first mounting bracket valve 2271 is connected to the first pneumatic switch 321, the second mounting bracket valve 2272 is connected to the second pneumatic switch 322, and the third mounting bracket valve 2273 is connected to the third pneumatic switch 323. Several solenoid valves are defined as a first solenoid valve 331, a second solenoid valve 332, and a third solenoid valve 333, respectively. The first solenoid valve 331 is connected to a first water / gas switch 341, the second solenoid valve 332 is connected to the second water / gas switch 342, and the third solenoid valve 333 is connected to the third water / gas switch 343.

[0059] In operation, when the dual-control foot pedal 31 is pressed, external airflow and external waterflow enter the air path 22 and water path 21, respectively. Part of the airflow is diverted to the bracket 225 via the first diversion valve 223, and another part is diverted to the second diversion valve 224. After passing through the second diversion valve 224, part of the airflow flows to the pressure sensor 46, which detects the airflow signal and determines that the dual-control foot pedal 31 has been pressed. The remaining airflow is regulated by the airflow flow regulating valve 228 and then flows to the three airflow branches 222.

[0060] During the procedure, the dental handpiece 10 in the first handle position is removed, the first hanger valve 2271 opens, and airflow flows to the first air pressure switch 321. The first air pressure switch 321 detects the air pressure signal and converts it into an electrical signal, which is transmitted to the drive box 40. The drive box 40 receives the electrical signal and uploads it to the control box 50. The control box 50 identifies the dental handpiece currently in use based on the electrical signal and automatically switches to the working mode of this dental handpiece, which is defined as the first working mode. The drive box 40 determines whether water and air need to be supplied based on the first working mode. If so, it controls the opening of the first solenoid valve 331, and the corresponding airflow flows to the first water-air switch 341, causing the first water-air switch 341 to open. At this time, the first airflow branch 2221 and the first waterflow branch 2121 are connected, and water and air flow enter the first water-air pipe 111 to supply water and air to the corresponding dental handpiece. The drive box 40 simultaneously controls the switching circuit 44 to connect the motor drive circuit 43 to the motor in the first handle position, and the motor drive circuit 43 drives the motor to operate in the first working mode.

[0061] Please see Figure 3 This application also provides a dental instrument, including a multi-motor dental handpiece device, to meet most application scenarios in dental treatment.

[0062] Furthermore, the dental handpiece may be selected from one or more of the following: a first dental handpiece used for general tooth preparation and restoration, a second dental handpiece used for root canal treatment, and a third dental handpiece used for sterile surgery.

[0063] Specifically, the first dental handpiece includes a first motor and a first handpiece body with an internal water channel. In this configuration, the water supply to the internal water channel can be self-supplying using a multi-motor dental handpiece device. As an example, the first dental handpiece is a handpiece with an internal water channel and a first motor paired with an internal water channel, where the speed ratio is 1:4.2.

[0064] Specifically, the second dental handpiece includes a second motor and a handpiece body with a root canal file. As an example, the second dental handpiece is a second motor paired with a reduction handpiece with a speed ratio of 6:1, used for root canal treatment.

[0065] During root canal treatment, the root canal file is mounted on the front end of the second handpiece and can be configured with different operating modes and adaptation parameters. As an example, this embodiment integrates five root canal modes within the interactive interface. Each mode can be set to continuous rotation or reciprocating rotation. In continuous rotation mode, the current operating speed and stopping torque can be adjusted. After startup, the second motor runs at the set speed. When the torque on the root canal file exceeds the set value, the second motor can stop or reverse. If the set torque is the stopping torque, the motor stops after reaching the set torque to prevent file breakage or deformation. If the set torque is the reversing torque, the motor starts reversing at the same speed after reaching the set torque. Reversing releases the torque and withdraws the file from the root canal. During reversal, the torque is monitored in real time. When the torque decreases to half or less of the set value, the second motor resumes forward rotation. In reciprocating rotation mode, the current operating speed and reciprocating angle can be adjusted. The reciprocating angle can be set to forward and reverse. After startup, the second motor reciprocates at the set speed and angle.

[0066] Specifically, the third dental handpiece includes a third motor and a handpiece body with an external water channel for supplying sterile water. In this configuration, the dental instrument also includes a sterile water assembly 60 for supplying sterile water. The drive box 40 is equipped with a pump signal interface connected to the sterile water assembly 60, and a stepper motor drive circuit 45 for driving the sterile water assembly 60. Specifically, the sterile water assembly 60 includes a peristaltic pump, which is controlled by the stepper motor drive circuit 45 to pump sterile water into the third dental handpiece. When the third dental handpiece is lifted, the control box 50 switches to the operating circuit of the third dental handpiece. The motor drive circuit 43 is connected to the third motor via a switching circuit 44, and simultaneously, the stepper motor drive circuit 45 controls the peristaltic pump to operate, allowing the sterile water assembly 60 to supply sterile water to the third dental handpiece. As an example, the third dental handpiece uses a third motor paired with an external water channel dental handpiece with a speed ratio of 1:5 for sterile surgeries such as tooth extraction.

[0067] It is understood that the above are only specific examples of dental handpiece settings. In other embodiments, dental handpieces can also be set according to actual surgical needs, and are not limited to this.

[0068] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows:

[0069] (1) By setting up multiple sets of dental handpieces that are individually controlled by motors, multiple handpieces can be used flexibly in the same operation, reducing the waiting time caused by changing handpieces during the operation.

[0070] (2) By setting up a water and air control component in conjunction with a drive box, it can automatically identify the dental handpiece currently being used by the doctor and switch to the pre-set working mode to work;

[0071] (3) By using an air pressure sensor inside the drive box to detect the status of the water and air dual-control foot pedal of the dental instrument, the original water and air dual-control foot pedal of the dental instrument can be used for control without the need to add an extra foot pedal, thus simplifying the installation of the multi-motor dental handpiece device.

[0072] (4) By setting a switching circuit, the motor drive circuit and the corresponding motor are connected to replace the traditional control method of multiple motor drive circuits driving multiple motors, which simplifies the circuit structure and saves costs.

[0073] (5) By setting up a sterile water assembly with a peristaltic pump and combining it with a third dental handpiece with an external water channel, sterile surgeries such as sterile tooth extraction can be achieved.

[0074] (6) By setting up a first dental handpiece with an internal water channel, a second dental handpiece with a root canal file, and a third dental handpiece with an external water channel, it can meet most application scenarios in dental treatment and has strong applicability.

[0075] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A multi-motor dental handpiece device, characterized in that, include: Multiple sets of dental handpieces, each set of which is equipped with a motor; A water-air assembly includes a water flow path and an air flow path; the end of the water flow path is divided into several water flow branches, and the end of the air flow path is divided into several air flow branches; one of the water flow branches and one of the air flow branches are simultaneously connected to a water-air pipe of a motor. The water-air control component includes a plurality of air pressure switches and a plurality of solenoid valves disposed on the air flow path corresponding one-to-one with the dental handpiece, and a plurality of water-air switches disposed on the water flow branch and the air flow branch; the solenoid valves are connected one-to-one with the water-air switches to control the opening or closing of the corresponding water-air switches, so as to control the conduction and cutoff of the corresponding water flow branch and the air flow branch. The drive box; the pneumatic switch, the solenoid valve, and the motor are all signal-connected to the drive box; when any dental handpiece is in use, the corresponding pneumatic switch detects the pneumatic signal and outputs a level signal to the drive box to identify the dental handpiece in use and output a corresponding working signal to control the operation of the solenoid valve and the motor.

2. The multi-motor dental handpiece device according to claim 1, characterized in that: The drive box is equipped with a motor drive circuit and a switching circuit. The input terminal of the switching circuit is connected to the motor drive circuit, and its output terminal is connected to each of the motors, so that the motor drive circuit is connected to different motors.

3. The multi-motor dental handpiece device according to claim 1, characterized in that: The water and air control component also includes a water and air dual-control foot pedal, which is located at the input end of the water flow path and the air flow path to control whether the water flow path and the air flow path are connected.

4. A multi-motor dental handpiece device according to claim 3, characterized in that: The drive box is also equipped with a pressure sensor. The air path is also equipped with a second diversion valve, one of the output terminals of which is connected to the air pressure sensor to detect the status of the water-air dual-control foot pedal.

5. A multi-motor dental handpiece device according to claim 4, characterized in that: The second diverter valve also has an airflow regulating valve between its output end and the input end of the airflow branch, which is used to regulate the airflow entering the airflow branch.

6. A multi-motor dental handpiece device according to claim 5, characterized in that: The air path is also provided with a first diverter valve and a bracket. The input end of the first diverter valve is connected to the output end of the airflow in the water-air dual-control foot pedal. One output end of the first diverter valve is connected to the bracket, and the other output end is connected to the second diverter valve. The hanger has several parallel handle positions for placing the dental handpiece and is connected to the pneumatic switch respectively; each handle position is equipped with a hanger valve to open or close the airflow passage between the handle position and the pneumatic switch.

7. A multi-motor dental handpiece device according to claim 3, characterized in that: The water flow path is equipped with a water flow regulating valve, which is located between the water and air dual-control foot pedal and the water flow branch, and is used to regulate the water flow rate entering the water flow branch.

8. A multi-motor dental handpiece device according to claim 1, characterized in that: The water-air switch is a diaphragm valve, which simultaneously controls the opening and closing of the water flow branch and the air flow branch connected to the same motor.

9. A multi-motor dental handpiece device according to claim 1, characterized in that: The dental handpieces described in the multiple groups are one or more of a first dental handpiece, a second dental handpiece, and a third dental handpiece; The first dental handpiece is equipped with a first motor and a first handpiece body with an internal water channel; The second dental handpiece is equipped with a second motor and a second handpiece body with a root canal file; The third dental handpiece is equipped with a third motor and a third handpiece body with an external water channel for providing sterile water.

10. A dental instrument, characterized in that, include: The multi-motor dental handpiece device according to any one of claims 1-9.

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