Dental planter emergency stop system and dental planter

Abstract

The utility model relates to a dental planter emergency stop system and a dental planter. The utility model relates to an emergency stop system of a dental planter, which comprises a dental handpiece comprising a drill bit arranged at the terminal of the dental handpiece and a motor used for driving the drill bit to work; the sudden stop triggering module is used for monitoring a working current signal of the motor, processing the working current signal and sending a sudden stop request; and the control module is used for receiving the sudden stop request and controlling the motor to stop working. According to the emergency stop system of the dental planter, disclosed by the utility model, the working state of the motor for driving the drill bit to work is monitored in real time, so that quick response can be realized to force the motor to stop working when drilling or bone cavity occurs, and therefore, the emergency stop of the drill bit is realized, and a patient is protected from secondary injury.

Description

Technical Field

[0001] The utility model relates to the technical field of dental medical instruments, in particular to an emergency stop system of a dental implant machine and a dental implant machine. Background Art

[0002] With the development of society, dental implants can achieve a restoration effect that closely resembles the function, structure, and aesthetics of natural teeth, and have become the preferred restoration method for an increasing number of patients with missing teeth. Dental implant machines are medical devices used for dental implants, suitable for patients with full or partial edentulous mouths. Dental implant machines minimize damage to the alveolar bone cells surrounding the implanted tooth root, achieving the best implant results.

[0003] When an operator uses a dental implant machine to perform bone drilling or grinding surgery, if the patient moves around or there is a cavity under the bone, the high-speed rotating drill may cause further harm to the patient, so an emergency stop system is necessary to stop the drill. Traditional dental implant machines usually have an emergency stop switch. When the drill penetrates the bone during operation, the drill is stopped by stepping on the emergency stop switch to protect the patient. However, this emergency stop method uses a foot-operated emergency stop switch, which requires a reaction process and often causes delayed emergency stops that can cause further harm to the patient. In addition, when there is a lot of external interference noise or there are many cascaded emergency stop switches, it is easy to accidentally touch the emergency stop switch, forcing the drill to stop working, affecting treatment. Utility Model Content

[0004] Based on this, one purpose of the present invention is to provide an emergency stop system for a dental implant machine, which monitors the working status of the dental handpiece motor in real time so that when drilling through or bone cavity occurs, it can quickly respond and force the motor to stop working, thereby achieving an emergency stop of the drill bit, protecting the patient from secondary injury, and reducing the probability of medical accidents.

[0005] Another object of the present invention is to provide a dental implant machine. By setting up an emergency stop system for the dental implant machine, when drilling through or bone cavity occurs during the implant bone drilling process, an emergency stop request can be issued through the emergency stop trigger module, and then the control module controls the dental handpiece, water supply module and other functional modules to stop urgently, making it easier for operators to handle abnormalities.

[0006] A dental implant machine emergency stop system, comprising:

[0007] A dental handpiece comprising a drill bit disposed at a terminal end thereof and a motor for driving the drill bit to operate;

[0008] An emergency stop trigger module, configured to monitor the operating current signal of the motor, process the operating current signal and issue an emergency stop request;

[0009] The control module is used to receive an emergency stop request and control the motor to stop working.

[0010] Furthermore, the emergency stop trigger module includes a sampling unit, and the sampling unit includes a single-resistance current sampling circuit for monitoring the operating current of the motor.

[0011] Furthermore, the emergency stop trigger module also includes a processing unit, which is used to process the current signal, compare it with the emergency stop trigger condition, and issue an emergency stop request.

[0012] Furthermore, the emergency stop triggering condition is that the torque is reduced to less than or equal to the system set torque within the system set time.

[0013] Furthermore, the control module includes a main control unit and a motor drive unit; the main control unit receives an emergency stop request and issues an emergency stop instruction, and the motor drive unit receives the emergency stop instruction and controls the motor to stop working.

[0014] Furthermore, the motor drive unit includes a motor drive circuit for driving the motor to work; the motor drive circuit is a three-phase six-arm full-bridge drive circuit, including an upper arm and a lower arm with the same structure. When the main control unit issues an emergency stop command, the upper arm is periodically turned off and the lower arm is periodically turned on.

[0015] Furthermore, the control module also includes a Hall signal and plug-in detection unit, which is used to detect the Hall signal of the motor and send it to the main control unit.

[0016] Furthermore, the dental implant machine emergency stop system further includes:

[0017] The water supply module is connected to the control module, and when the control module receives an emergency stop request, it controls the water supply module to stop supplying water.

[0018] Furthermore, the dental implant machine emergency stop system further includes:

[0019] The pedal module is connected to the control module by wire or wirelessly, and is used to send an emergency stop release request to the control module to release the emergency stop state.

[0020] A dental implant machine comprises the dental implant machine emergency stop system described in the utility model.

[0021] The beneficial effects of the present invention are:

[0022] (1) By monitoring the working status of the dental handpiece motor in real time, when drilling or bone cavitation occurs, the motor can be quickly stopped to achieve emergency stop of the dental handpiece and protect the patient from secondary injury;

[0023] (2) By controlling the water supply module and the dental handpiece to stop synchronously, it is convenient for operators to handle abnormalities;

[0024] (3) Release the emergency stop state through the foot pedal module for easy operation;

[0025] (4) A single resistor sampling circuit is used to monitor the motor operating current. The data sampled during the entire cycle is stable, with small fluctuations and high sampling consistency, thereby improving the stability of the emergency stop system operation.

[0026] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the emergency stop system of the dental implant machine provided in the embodiment of the present application Figure 1 ;

[0028] Figure 2 Schematic diagram of the emergency stop system of the dental implant machine provided in the embodiment of the present application Figure 2 ;

[0029] Figure 3 Schematic diagram of a single-resistor current sampling circuit provided in an embodiment of the present application.

[0030] In the figure: 10-dental handpiece; 20-emergency stop trigger module; 21-sampling unit; 22-processing unit; 30-control module; 31-main control unit; 32-motor drive unit; 33-Hall signal and plug-in detection unit; 34-lighting drive unit; 35-stepping motor drive unit; 40-lighting module; 50-water supply module; 60-foot module; 70-interaction module. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] Dental implant machine is a medical device used for dental implantation. It is suitable for dental implant treatment of patients with full mouth and partial edentulousness. Dental implant machine can minimize the damage to the alveolar bone cells around the implanted tooth root and achieve the best dental implant effect.

[0035] When an operator uses a dental implant machine to perform bone drilling or grinding surgery, if the patient moves or there is a cavity under the bone, the high-speed rotating drill may cause further harm to the patient, so an emergency stop system is necessary to stop the drill. Traditional dental implant machines usually have an emergency stop switch. When the drill penetrates the bone during operation, the emergency stop switch is triggered by stepping on the foot to stop the drill, thereby protecting the patient. However, this emergency stop method is to trigger the emergency stop switch by the foot, which requires a reaction process, and often causes a delayed emergency stop, which can cause further harm to the patient.

[0036] Based on this, an embodiment of the present application provides an emergency stop system for a dental implant machine, which monitors the working status of the dental handpiece motor in real time so that when drilling through or bone cavity occurs, it can quickly respond and force the motor to stop working, thereby achieving an emergency stop of the drill bit, protecting the patient from secondary injury, and reducing the probability of medical accidents.

[0037] See also Figure 1-3An embodiment of the present application provides an emergency stop system for a dental implant machine, comprising: a dental handpiece 10, an emergency stop trigger module 20 and a control module 30, wherein the dental handpiece 10 includes a drill bit provided at its terminal and a motor for driving the drill bit; the emergency stop trigger module 20 is used to monitor the working current signal of the motor, process the working current signal and issue an emergency stop request; the control module is used to receive the emergency stop request and control the motor to stop working.

[0038] Specifically, the emergency stop trigger module 20 includes a sampling unit 21 and a processing unit 22; the sampling unit 21 is used to monitor the working current signal of the motor and transmit the detection data to the processing unit 22; the processing unit 22 processes the detection data and issues an emergency stop request.

[0039] The dental implant emergency stop system provided in the embodiment of the present application directly monitors the working current of the motor through the emergency stop trigger module 20. Based on the proportional relationship between the motor working current and the torque, when the drill bit is drilling or grinding a hole, the motor itself is in a load state and has a high current; when drilling through or a bone cavity is formed, the motor torque drops sharply, and the working current of the motor suddenly drops. The sampling unit 21 transmits the working current signal of the motor to the processing unit 22. The processing unit 22 processes the current signal and performs calculations. When the processing unit 22 determines that the current motor operating state triggers the emergency stop trigger condition, an emergency stop request is issued. Specifically, the emergency stop trigger condition is that if the torque drops to or below the system set torque within the system set time, it is determined that drilling through or a bone cavity has occurred, and an emergency stop request is issued.

[0040] For example, when a drill is operating normally, the motor itself is under load, drawing a high current, which translates into a torque greater than 10 N.cm. The system's predefined emergency stop trigger condition is: if the torque drops from greater than 10 N.cm to 2 N.cm or less within 100 ms, the processing unit 22 will issue an emergency stop request if it determines the motor's operating state triggers this condition. The control module 30 responds to the request and stops the motor.

[0041] It is understood that under normal motor operation, its speed is greater than 300 rpm and its torque is greater than 10 N.cm. Once the bone is drilled through, the load disappears, causing the torque to drop rapidly, reaching a theoretical value of 0 N.cm. In some specific embodiments, to avoid errors in the no-load reference torque, the system-set torque in this emergency stop system is set to be less than or equal to 2 N.cm. Furthermore, when a high-speed motor is suddenly stopped, the shorter the stopping time, the greater the vibration. Excessive vibration may cause the motor to slip out of the hand, while an excessively long stopping time will not provide the protective effect of the emergency stop. Therefore, 100 ms is selected as a preferred system-set time.

[0042] See also Figure 1-3 Furthermore, in some embodiments, the sampling unit 21 includes a single-resistor current sampling circuit. When the motor rotates, the current of the motor winding returns to the ground through R1. The voltage across R1 is filtered by a first-order filter composed of R2 and C1. The filtered current enters the operational amplifier OP1 for amplification. The amplified current signal enters the processing unit 22. At this time, the voltage value is linearly related to the current. The processing unit 22 reads the voltage value, calculates and determines the current motor operating state to trigger the emergency stop trigger condition. Compared with the traditional multi-resistor sampling circuit, the single-resistor current sampling circuit uses fewer devices than the multi-resistor circuit, such as at least one operational amplifier for current sampling, which is more reliable. At the same time, the same resistor and the same method circuit are used throughout the entire switching cycle, and the detection consistency is high. The data sampled throughout the cycle is stable and has small fluctuations.

[0043] Furthermore, in some embodiments, the control module 30 includes a main control unit 31 and a motor drive unit 32. The main control unit 31 receives the emergency stop request from the processing unit 22 and issues an emergency stop instruction. The motor drive unit 32 receives the emergency stop instruction and controls the motor to stop working.

[0044] Specifically, the motor drive unit 32 includes a motor drive circuit, which is a three-phase six-arm full-bridge drive circuit composed of six MOS switches, including an upper arm and a lower arm with the same structure. Specifically, the upper arm is provided with a first MOS switch Q1, a second MOS switch Q2 and a third MOS switch Q3, and the lower arm is provided with a fourth MOS switch Q4, a third MOS switch Q5 and a sixth MOS switch Q6. When Q1 and Q5 are turned on, winding CB is energized, and the motor's rotor rotates 1 / 6 of a circle under the action of the magnetic field; when Q1 and Q6 are turned on, winding CA is energized, and the motor's rotor rotates 2 / 6 of a circle under the action of the magnetic field; when Q2 and Q4 are turned on, winding BC is energized, and the motor's rotor rotates 3 / 6 of a circle under the action of the magnetic field; when Q2 and Q6 are turned on, winding BA is energized, and the motor's rotor rotates 4 / 6 of a circle under the action of the magnetic field; when Q3 and Q4 are turned on, winding AC is energized, and the motor's rotor rotates 5 / 6 of a circle under the action of the magnetic field; when Q3 and Q5 are turned on, winding AB is energized, and the motor's rotor rotates one circle under the action of the magnetic field; repeating this process can achieve normal operation of the motor. When the main control unit 31 issues an emergency stop command, the MOS switches of the upper arm are all periodically turned off, that is, Q1, Q2, and Q3 are all periodically turned off, and the MOS switches of the lower arm are all periodically turned on, that is, Q4, Q5, and Q6 are all periodically turned on; the motor speed drops from the normal operating speed to 0.

[0045] Furthermore, the motor drive unit 32 also includes a voltage regulating circuit, which is provided at the input end of the motor drive circuit and is used to process the signal sent by the main control unit 31 and then supply voltage to the motor drive circuit, which will not be described in detail here.

[0046] Furthermore, the control module 30 also includes a Hall signal and plug-in detection unit 33 for detecting the Hall signal of the motor and sending it to the main control unit 31 .

[0047] Furthermore, in some embodiments, the dental implant emergency stop system also includes a water supply module 50, which is used to provide water cooling and flushing power for the working area during the implant surgery. The water supply module 50 is connected to the control module 30. Specifically, the water supply module 50 is provided with a peristaltic pump. The control module 30 also includes a stepper motor drive unit 35, wherein the stepper motor drive unit 35 is connected to the main control unit 31. When the main control unit 31 receives an emergency stop request, it issues an emergency stop command. The stepper motor drive unit 35 synchronously receives the emergency stop command to control the peristaltic pump to stop working, and feeds back the stop signal to the main control unit 31. Under this setting, when the motor stops working, the peristaltic pump is synchronously controlled to stop working, causing the water supply module 50 to stop supplying water, making it easier for the operator to immediately handle the abnormality.

[0048] Furthermore, in some embodiments, the dental implant emergency stop system also includes a foot pedal module 60 connected to the control module 30. When the dental implant is in an emergency stop state, the foot pedal module 60 can be used to send an emergency stop release request to the control module 30. The control module 30 receives the emergency stop release request and releases the emergency stop state. Simultaneously, the foot pedal module 60 can also send an operating request or a standby request to the main control unit 31. Upon receiving the request, the main control unit 31 responds with specific instructions to control the water supply module 50 and the dental handpiece 10 to enter the operating state or the standby state.

[0049] Specifically, the foot module 60 is equipped with a pedal and a foot switch. In the emergency stop state, after the operator has resolved the issue, they step on the pedal to trigger the foot switch, sending an emergency stop release request to the main control unit 31. The main control unit 31 then issues a release command, and the water supply module 50 and dental handpiece 10 enter a standby state. At this point, if the pedal is pressed normally, the water supply module 50 and dental handpiece 10 enter an operating state. Releasing the pedal causes the main control unit 31 to control the water supply module 50 and dental handpiece 10 to enter a standby state.

[0050] It is understandable that the pedal module 60 can be connected to the control module 30 by wired connection or wireless connection. As an example, the wireless connection mode can be a Bluetooth connection mode, which will not be described in detail here.

[0051] Furthermore, in some embodiments, the dental implant emergency stop system also includes an interactive module 70 and a lighting module 40. The interactive module 70 is connected to the control module 30, specifically, to the main control unit 31. The interactive module 70 includes buttons and a display screen, which can be used to adjust parameters of the dental implant in the standby state, such as adjusting the speed, torque, water volume, etc., and display real-time status in the working state, such as real-time speed, real-time torque, etc. The interactive module 70 is also provided with a voice broadcast unit for voice broadcasting the real-time status of the dental implant and prompts. For example, when the dental implant is in an emergency stop state, the display screen and the voice broadcast unit prompt that it is in an emergency stop state.

[0052] The lighting module 40 is used to provide auxiliary lighting for the dental handpiece 10 during operation. The control module 30 is also provided with a corresponding lighting drive unit 34. The main control unit 31 controls the operation of the lighting drive unit 34 while controlling the motor drive unit 32. It is understood that the lighting drive unit 34 can also be turned on and off by the interaction module 70.

[0053] The following combination Figure 1-3 , the working principle of a dental implant machine emergency stop system provided in an embodiment of the present application is explained.

[0054] First, the dental implant machine is started, and the dental handpiece 10, the water supply module 50 and other modules begin to work normally. At this time, the motor speed is greater than 300 rpm, the torque is greater than 10 N.cm, and the motor is in a load operation state.

[0055] The emergency stop trigger module 20 samples and processes the motor working current in real time. When the torque drops sharply to 2N.cm or below within 100ms, the emergency stop trigger condition is triggered. The emergency stop trigger module 20 issues an emergency stop request, the main control unit 31 receives the emergency stop request and responds, the motor drive unit 32 controls the motor to stop working, and the synchronous stepper motor drive unit 35 controls the peristaltic pump to stop working, realizing the synchronous emergency stop of the dental handpiece 10 and the water supply module 50. At this time, the interactive module 70 prompts the dental implant machine to enter the emergency stop state, waiting for the operator to handle the abnormality.

[0056] After the abnormality is handled, the pedal is stepped on, and the pedal module 60 sends an emergency stop release request signal to the main control unit 31, and the main control unit 31 controls the dental implant machine to enter the standby state.

[0057] An embodiment of the present application also provides a dental implant machine, which is equipped with an emergency stop system for the dental implant machine. By real-time monitoring of the working current of the motor that drives the drill bit, it can quickly respond to force the motor to stop working when drilling through or bone cavity occurs, thereby achieving an emergency stop of the dental handpiece to protect the patient from secondary injury. At the same time, a synchronous response is made to cause the water supply module to stop urgently, making it easier for operators to handle abnormalities.

[0058] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0059] (1) By monitoring the working status of the dental handpiece motor in real time, when drilling or bone cavitation occurs, the motor can be quickly stopped to achieve emergency stop of the dental handpiece and protect the patient from secondary injury;

[0060] (2) By controlling the water supply module and the dental handpiece to stop synchronously, it is convenient for operators to handle abnormalities;

[0061] (3) Release the emergency stop state through the foot pedal module for easy operation;

[0062] (4) A single resistor sampling circuit is used to monitor the motor operating current. The data sampled during the entire cycle is stable, with small fluctuations and high sampling consistency, thereby improving the stability of the emergency stop system operation.

[0063] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous modifications and improvements without departing from the concept of the present invention, and the present invention is intended to encompass such modifications and variations.

Claims

1. A dental implant emergency stop system, characterized in that: include: A dental handpiece comprising a drill bit disposed at a terminal end thereof and a motor for driving the drill bit to operate; An emergency stop trigger module, configured to monitor the operating current signal of the motor, process the operating current signal and issue an emergency stop request; The control module is used to receive an emergency stop request and control the motor to stop working.

2. The dental implant machine emergency stop system according to claim 1, characterized in that: The emergency stop trigger module includes a sampling unit, which is provided with a single-resistance current sampling circuit for monitoring the operating current of the motor.

3. The dental implant machine emergency stop system according to claim 2, characterized in that: The emergency stop trigger module further includes a processing unit, which is used to process the current signal, compare it with the emergency stop trigger condition, and issue an emergency stop request.

4. The dental implant machine emergency stop system according to claim 3, characterized in that: The emergency stop triggering condition is that the torque is reduced to less than or equal to the system set torque within the system set time.

5. The dental implant machine emergency stop system according to claim 1, characterized in that: The control module includes a main control unit and a motor drive unit; the main control unit receives an emergency stop request and issues an emergency stop instruction, and the motor drive unit receives the emergency stop instruction and controls the motor to stop working.

6. The dental implant machine emergency stop system according to claim 5, characterized in that: The motor drive unit includes a motor drive circuit for driving the motor to work; the motor drive circuit is a three-phase six-arm full-bridge drive circuit, including an upper arm and a lower arm with the same structure. When the main control unit issues an emergency stop command, the upper arm is periodically cut off and the lower arm is periodically opened.

7. The dental implant machine emergency stop system according to claim 5, characterized in that: The control module further includes a Hall signal and plug-in detection unit for detecting the Hall signal of the motor and sending the Hall signal to the main control unit.

8. The dental implant machine emergency stop system according to claim 1, characterized in that: Also includes: The water supply module is connected to the control module, and when the control module receives an emergency stop request, it controls the water supply module to stop supplying water.

9. The dental implant machine emergency stop system according to claim 1, characterized in that: Also includes: The pedal module is connected to the control module by wire or wirelessly, and is used to send an emergency stop release request to the control module to release the emergency stop state.

10. A dental implant machine, characterized in that: include: The dental implant machine emergency stop system according to any one of claims 1 to 9.

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