Array type ultrasonic tooth cleaning device based on pressure-sensitive self-flushing

Abstract

The invention discloses an array type ultrasonic tooth cleaning device based on pressure-sensitive self-flushing, and relates to the field of ultrasonic tooth cleaning, the device comprises a plurality of pressure-sensitive transduction units and micro-flushing nozzles which are integrated on a flexible base, and an ultrasonic water supply and drainage comprehensive control unit. A user applies pressure to a tooth area through occlusion, and the pressure sensing transduction unit collects pressure data in real time and transmits the pressure data to the ultrasonic water supply and drainage comprehensive control unit. The control unit judges whether a tooth cleaning program is started or not according to preset conditions, once the tooth cleaning program is triggered, power is supplied to the transducers in the corresponding areas, ultrasonic fixed-point cluster cleaning is carried out, meanwhile, the associated micro-flushing nozzles are controlled to carry out collaborative flushing, and sewage in the oral cavity is pumped to an external sewage collection pool in real time. According to the invention, ultrasonic precise cleaning and synchronous water flushing aiming at a specific tooth area are realized in an occlusion pressure automatic triggering manner, and sewage can be discharged in time, so that the tooth cleaning accuracy, convenience and cleaning efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of ultrasonic teeth cleaning, and in particular to an array-type ultrasonic teeth cleaning device based on pressure-sensitive self-rinsing. Background Technology

[0002] With increasing emphasis on oral health, the intelligent, efficient, and comfortable aspects of daily dental cleaning tools have become important development directions. Traditional teeth cleaning methods (such as manual brushing) rely on the user's skill and patience, resulting in inconsistent cleaning effects and difficulty in thoroughly removing plaque and crevices. Although existing technologies such as electric toothbrushes, water flossers, and even ultrasonic scalers have improved cleaning capabilities, most still require manual operation and mode switching, making the cleaning process relatively rough and lacking precise targeting and adaptive cleaning capabilities for individual or localized teeth. Furthermore, the rinsing and cleaning steps during teeth cleaning are often separate or require additional steps, which not only disrupts the continuity of cleaning but may also lead to water retention in the mouth, affecting user experience and oral hygiene.

[0003] Existing ultrasonic dental cleaning devices have the following main shortcomings: 1. It usually requires manual activation and selection of the cleaning area, and cannot be automatically activated based on the real-time force applied to the teeth, making the operation not intuitive or convenient.

[0004] 2. The effective range of ultrasound is relatively fixed, making it difficult to perform adaptive focused cleaning on a single tooth or a specific area.

[0005] 3. Ultrasonic cleaning and water rinsing often cannot be precisely coordinated, affecting cleaning efficiency, and the wastewater generated cannot be discharged in time, requiring users to handle it separately, resulting in a poor user experience. Summary of the Invention

[0006] The purpose of this application is to provide an array-type ultrasonic teeth cleaning device based on pressure-sensitive self-rinsing, which can achieve precise ultrasonic cleaning and simultaneous water rinsing of specific tooth areas through automatic triggering by biting pressure, and can immediately drain the wastewater, thereby improving the accuracy, convenience and cleaning efficiency of teeth cleaning.

[0007] To achieve the above objectives, this application provides the following solution: This application provides an array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing. The device includes: multiple pressure-sensitive transducer units, multiple micro-rinsing nozzles, a flexible base, and an ultrasonic water supply and drainage integrated control unit. The pressure-sensitive transducer units and the micro-rinsing nozzles are fixedly disposed at the opening positions of the flexible base. Each pressure-sensitive transducer unit corresponds to one or more micro-rinsing nozzles, each pressure-sensitive transducer unit is electrically connected to the flexible base, and each micro-rinsing nozzle is connected to a pipeline of the flexible base. Each pressure-sensitive transducer unit includes multiple pressure-sensitive transducers arranged in a preset array. The purified water input port of the ultrasonic water supply and drainage integrated control unit is connected to an external water source, and the purified water output port of the ultrasonic water supply and drainage integrated control unit is connected to a pipeline of the flexible base. The wastewater inlet of the unit is immersed in the user's oral fluid, and the wastewater outlet of the ultrasonic water supply and drainage integrated control unit is connected to an external sludge collection tank. During the teeth cleaning process, the user applies biting force to the areas of the teeth that need cleaning. The pressure-sensitive transducer unit acquires the pressure data of all the micro-rinsing nozzles within its own unit and transmits it to the ultrasonic water supply and drainage integrated control unit. Based on all the pressure data, the ultrasonic water supply and drainage integrated control unit determines whether to perform cleaning according to preset judgment conditions. If so, the ultrasonic water supply and drainage integrated control unit starts supplying water and power. The pressure-sensitive transducer performs ultrasonic fixed-point cluster cleaning, and the micro-rinsing nozzles corresponding to the pressure-sensitive transducer unit perform coordinated rinsing according to a preset rinsing strategy. At the same time, the ultrasonic water supply and drainage integrated control unit pumps the wastewater generated during the teeth cleaning process into the external sludge collection tank.

[0008] Optionally, the pressure-sensitive transducer includes an upper focusing acoustic lens layer, an upper ultrasonic driving layer, an upper pressure sensing layer, a flexible electronic circuit layer, a lower pressure sensing layer, a lower ultrasonic driving layer, and a lower focusing acoustic lens layer stacked and bonded together from top to bottom; the upper ultrasonic driving layer, the upper pressure sensing layer, the lower pressure sensing layer, and the lower ultrasonic driving layer are all electrically connected to the flexible electronic circuit layer; the flexible electronic circuit layer is electrically connected to the flexible base; the upper pressure sensing layer and the lower pressure sensing layer are both used to collect pressure data; the upper ultrasonic driving layer and the lower ultrasonic driving layer are both used to generate PWM acoustic wave signals; the upper focusing acoustic lens layer and the lower focusing acoustic lens layer are both used to constrain and guide the PWM acoustic wave signals to form a concentrated sound beam acting on the user's tooth surface.

[0009] Optionally, a graphite heat dissipation layer is further laid between the upper focusing acoustic lens layer, the upper ultrasonic driving layer, the upper pressure sensing layer, the flexible electronic circuit layer, the lower pressure sensing layer, the lower ultrasonic driving layer and the lower focusing acoustic lens layer for heat dissipation and cooling.

[0010] Optionally, the flexible base corresponds to the human gum and is shaped like a snake's belly.

[0011] Optionally, the micro-rinsing nozzle is an array of micron-sized purging nozzles arranged in a ring at equal intervals.

[0012] Optionally, the micro-rinsing nozzle is electrically controlled and has an adjustable angle.

[0013] Optionally, the preset array is a quincunx array.

[0014] Optionally, the preset judgment condition is that cleaning is required when the median of the pressure data of all the micro-flushing nozzles in each pressure-sensitive transducer unit exceeds the pressure threshold; otherwise, cleaning is not required.

[0015] Optionally, the preset judgment condition is that cleaning is required when the average value of the pressure data of all the micro-rinsing nozzles in each pressure-sensitive transducer unit exceeds the pressure threshold; otherwise, cleaning is not required.

[0016] Optionally, the preset flushing strategy is to flush multiple times by varying the water pressure at preset time intervals.

[0017] According to the specific embodiments provided in this application, the following technical effects are disclosed: This application mainly consists of multiple pressure-sensitive transducer units integrated on a flexible base, multiple corresponding micro-rinsing nozzles, and an ultrasonic water supply and drainage integrated control unit. The pressure-sensitive transducer units are composed of transducers arranged in an array and fixed together with the micro-rinsing nozzles at the openings in the base. Each transducer unit is electrically connected to the control unit via the base, and each nozzle is connected to the control unit via a pipeline through the base. The control unit is connected to an external water source and a wastewater collection tank, responsible for water supply and wastewater discharge. When the user applies biting force to the target tooth area during teeth cleaning, the pressure-sensitive transducer units collect pressure data in real time and transmit it to the ultrasonic water supply and drainage integrated control unit. The control unit determines whether to initiate cleaning. If so, it supplies power and water to the corresponding pressure-sensitive transducer units and micro-rinsing nozzles, enabling the pressure-sensitive transducer units to perform ultrasonic targeted cluster cleaning, while simultaneously driving the associated micro-rinsing nozzles to rinsing according to a preset strategy, and pumping the generated wastewater into the external wastewater collection tank. This application achieves precise ultrasonic cleaning and simultaneous water rinsing of specific tooth areas by automatically triggering the occlusal pressure, and can immediately drain the wastewater, thus improving the accuracy, convenience and efficiency of teeth cleaning. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structural connection of an array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the structural connection of the pressure-sensitive transducer provided in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the structure of the micro-rinsing nozzle provided in an embodiment of this application.

[0022] Figure label: 1. Multiple pressure-sensitive transducer units; 2. Multiple micro-flushing nozzles; 3. Flexible base; 4. Ultrasonic water supply and drainage integrated control unit; 11. Pressure-sensitive transducer; 111. Upper focusing acoustic lens layer; 112. Upper ultrasonic drive layer; 113. Upper pressure sensing layer; 114. Lower pressure sensing layer; 115. Lower ultrasonic drive layer; 116. Lower focusing acoustic lens layer; 117. Flexible electronic circuit layer. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1, such as Figures 1-3 As shown, this embodiment provides an array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing. The device includes: multiple pressure-sensitive transducer units 1, multiple micro-rinsing nozzles 2, a flexible base 3, and an ultrasonic water supply and drainage integrated control unit 4.

[0026] Both the pressure-sensitive transducer and the micro-rinsing nozzle are fixedly disposed at the opening position of the flexible base 3; each pressure-sensitive transducer corresponds to one or more micro-rinsing nozzles, each pressure-sensitive transducer is electrically connected to the flexible base 3, and each micro-rinsing nozzle is connected to the pipeline of the flexible base 3; wherein, the pressure-sensitive transducer includes: a plurality of pressure-sensitive transducers 11 arranged in a preset array.

[0027] The purified water inlet of the ultrasonic water supply and drainage integrated control unit 4 is connected to an external water source, the purified water outlet of the ultrasonic water supply and drainage integrated control unit 4 is connected to the pipeline of the flexible base 3, the sewage inlet of the ultrasonic water supply and drainage integrated control unit 4 is immersed in the user's oral fluid, and the sewage outlet of the ultrasonic water supply and drainage integrated control unit 4 is connected to an external sludge collection tank.

[0028] During the teeth cleaning process, the user applies biting force to the areas of the teeth that need cleaning. The pressure-sensitive transducer unit acquires the pressure data of all the micro-rinsing nozzles within its unit and transmits it to the ultrasonic water supply and drainage integrated control unit 4. The ultrasonic water supply and drainage integrated control unit 4 determines whether to perform cleaning based on all the pressure data and preset judgment conditions. If so, the ultrasonic water supply and drainage integrated control unit 4 starts supplying water and power, and the current pressure-sensitive transducer 11 performs ultrasonic fixed-point cluster cleaning. The micro-rinsing nozzles corresponding to the current pressure-sensitive transducer unit perform coordinated rinsing according to a preset rinsing strategy. At the same time, the ultrasonic water supply and drainage integrated control unit 4 pumps the wastewater generated during the teeth cleaning process into an external sludge collection tank.

[0029] Furthermore, such as Figure 2 As shown, the pressure-sensitive transducer 11 includes an upper focusing acoustic lens layer 111, an upper ultrasonic driving layer 112, an upper pressure sensing layer 113, a flexible electronic circuit layer 117, a lower pressure sensing layer 114, a lower ultrasonic driving layer 115, and a lower focusing acoustic lens layer 116 stacked and bonded from top to bottom. The upper ultrasonic driving layer 112, the upper pressure sensing layer 113, the lower pressure sensing layer 114, and the lower ultrasonic driving layer 115 are all electrically connected to the flexible electronic circuit layer 117. The flexible electronic circuit layer 117 is electrically connected to the flexible base 3. The upper pressure sensing layer 113 and the lower pressure sensing layer 114 are both used to collect pressure data. The upper ultrasonic driving layer 112 and the lower ultrasonic driving layer 115 are both used to generate PWM acoustic wave signals. The upper focusing acoustic lens layer 111 and the lower focusing acoustic lens layer 116 are both used to constrain and guide the PWM acoustic wave signals to form a concentrated sound beam acting on the user's tooth surface.

[0030] In practical applications, the frequency of the PWM signal output by the upper ultrasonic driving layer 112 and the lower ultrasonic driving layer 115 is 200kHz.

[0031] Furthermore, a graphite heat dissipation layer is also laid between the upper focusing acoustic lens layer 111, the upper ultrasonic driving layer 112, the upper pressure sensing layer 113, the flexible electronic circuit layer 117, the lower pressure sensing layer 114, the lower ultrasonic driving layer 115 and the lower focusing acoustic lens layer 116 for heat dissipation and cooling.

[0032] In practical applications, the pressure-sensitive transducer 11 has a multi-layered composite structure. The pressure-sensing layer is the "sensing unit" of the device, and its core component is a pressure sensor used to sense the chewing force (biting force) of the teeth in real time. The pressure sensor is a flexible piezoresistive sensor. When it is attached to the tooth surface, it can convert the mechanical force generated by chewing into a resistance change signal, providing input for subsequent intelligent triggering. The ultrasonic driving layer is the "power unit" of the device, integrating a micro piezoelectric ceramic ultrasonic array. The piezoelectric ceramic sheets are arranged in a matrix or specific geometric pattern (such as a ring or linear array) on a flexible substrate. When a driving signal is received, the piezoelectric ceramic sheets vibrate at high frequency, generating 200kHz ultrasonic waves that act on the tooth surface to achieve a cleaning effect. The focusing acoustic lens layer is the "directional unit" of the device, located outside the ultrasonic driving layer, and is made of acoustic waveguide material (such as a composite material of flexible silicone and polycarbonate). Its function is to collect the divergent sound waves emitted by the piezoelectric ceramic sheet, constrain and guide the sound waves to a specific direction (i.e., the tooth surface), forming a concentrated sound beam, improving the directionality and efficiency of ultrasonic cleaning, while avoiding the irritation of the gums caused by sound wave diffusion. The intermediate layer (flexible electronic circuit layer 117) is the "support and connection unit" of the device, made of a flexible substrate (such as polyimide film), and has both mechanical support and circuit integration functions: Mechanical support: By using flexible material to adhere to the tooth surface, it seals the space above the teeth, ensuring the fit between the device and the teeth; Circuit integration: The intermediate layer integrates flexible electronic circuitry to connect the pressure sensing layer, ultrasonic drive layer, and control drive system, realizing the transmission of signals and electrical energy.

[0033] Pressure sensing layer: A flexible piezoresistive sensor with a thickness of 0.1mm is used. The piezoresistive material is carbon nanotube composite rubber, and the resistance changes from 10kΩ to 100kΩ. The resistance decreases when force is applied.

[0034] Ultrasonic driving layer: PZT-5 type piezoelectric ceramic sheet with a size of 5mm×5mm×2mm is selected and arranged in a 3×3 matrix on the flexible substrate to form a 9-unit ultrasonic array.

[0035] Focusing acoustic lens layer: Made of silicone-polycarbonate composite material with a thickness of 2mm, the acoustic wave transmittance is ≥90%, and the acoustic wave focusing angle can be controlled within 30°.

[0036] Intermediate layer (flexible electronic circuit layer 117): The flexible substrate is a 0.05mm thick polyimide film, the integrated flexible electronic circuit linewidth is 50μm, and the gold fingers are made of copper-plated gold material with a contact resistance ≤0.1Ω; the intermediate layer structure includes acoustic electrode signal lines and pressure transmission electrode signal lines: Acoustic electrode signal lines: connect the ultrasonic drive layer and the flexible electronic circuit, used to transmit the ultrasonic drive signal output by the drive circuit; Pressure transmission electrode signal lines: connect the pressure sensing layer and the flexible electronic circuit, used to transmit the resistance change signal of the pressure sensor; at the same time, the intermediate layer also has gold fingers to realize the interaction between the flexible electronic circuit and external devices (such as charging devices, control terminals) to complete power replenishment and program debugging.

[0037] In addition, the ultrasonic water supply and drainage integrated control unit 4 has an internal control drive system: the MCU is an ultra-low power microcontroller of model STM32L051, and the drive circuit uses MAX4428 operational amplifier with a magnification of 20 times.

[0038] Furthermore, the flexible base 3 corresponds to the human gum and is shaped like a snake's belly.

[0039] Furthermore, the micro-rinsing nozzle is a micron-sized purge nozzle array arranged in a ring at equal intervals.

[0040] Furthermore, the micro-rinsing nozzle is electrically controlled and has an adjustable angle.

[0041] Furthermore, the preset array is a quincunx array.

[0042] Furthermore, the preset judgment condition is that cleaning is required when the median of the pressure data of all the micro-rinsing nozzles in each pressure-sensitive transducer unit exceeds the pressure threshold; otherwise, cleaning is not required.

[0043] Optionally, the pressure threshold is 5N.

[0044] In practical applications, the resistance signal of the pressure sensor can be stably lower than the threshold (50kΩ), and the MCU can trigger the ultrasonic program 100%.

[0045] Furthermore, the preset judgment condition is that cleaning is required when the average value of the pressure data of all the micro-rinsing nozzles in each pressure-sensitive transducer unit exceeds the pressure threshold; otherwise, cleaning is not required.

[0046] Furthermore, the preset flushing strategy involves flushing multiple times at preset time intervals by varying the water pressure.

[0047] In practical applications, the array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing also includes a water inlet heating device, which is connected to the ultrasonic water supply and drainage integrated control unit 4 and is used to heat the inlet water.

[0048] This embodiment also provides an example to illustrate in detail the practical application process of a pressure-sensitive self-flushing array-type ultrasonic dental scaler, as follows: 1) Connect the flexible base 3 to the external control unit. Pressure-sensitive transducer units are arranged in a quincunx pattern on the base, with each unit corresponding to a ring of micron-level adjustable flushing nozzles.

[0049] 2) When the user wears the base and bites a certain tooth, the upper and lower pressure sensing layers 114 of the corresponding unit collect pressure data at all nozzles in that area and upload it.

[0050] 3) The ultrasonic water supply and drainage integrated control unit 4 calculates the average pressure data of the area. If the average value exceeds a preset threshold (e.g., 1.5N), it is determined that cleaning is required, and the pressure-sensitive transducer unit is locked.

[0051] 4) The ultrasonic water supply and drainage integrated control unit is powered and supplied with water by a pressure-sensitive transducer unit locked in four directions. Its upper and lower ultrasonic drive layers 115 generate sound waves, which are focused by an acoustic lens and then used for ultrasonic beam cleaning from both sides of the teeth.

[0052] 5) At the same time, the corresponding annular nozzle array is activated, and the water pressure is changed at set time intervals to perform multiple pulsed water flow flushes to remove stains in a coordinated manner.

[0053] 6) Throughout the cleaning process, the control unit actively pumps sewage through the sewage inlet in the mouth and discharges it into the external sewage collection tank in real time to keep the mouth clean.

[0054] In addition, the graphite heat dissipation layer inside the pressure-sensitive transducer 11 continues to operate to prevent overheating (which would affect the user experience). After the area is cleaned, the device stands by, waiting for the user's next engagement trigger.

[0055] The technical effects of this application are as follows: This application mainly consists of multiple pressure-sensitive transducer units integrated on a flexible base, multiple corresponding micro-rinsing nozzles, and an ultrasonic water supply and drainage integrated control unit. The pressure-sensitive transducer units are composed of transducers arranged in an array and fixed together with the micro-rinsing nozzles at the openings in the base. Each transducer unit is electrically connected to the control unit via the base, and each nozzle is connected to the control unit via a pipeline through the base. The control unit is connected to an external water source and a wastewater collection tank, responsible for water supply and wastewater discharge. When the user applies biting force to the target tooth area during teeth cleaning, the pressure-sensitive transducer units collect pressure data in real time and transmit it to the ultrasonic water supply and drainage integrated control unit. The control unit determines whether to initiate cleaning. If so, it supplies power and water to the corresponding pressure-sensitive transducer units and micro-rinsing nozzles, enabling the pressure-sensitive transducer units to perform ultrasonic targeted cluster cleaning, while simultaneously driving the associated micro-rinsing nozzles to rinsing according to a preset strategy, and pumping the generated wastewater into the external wastewater collection tank. This application achieves precise ultrasonic cleaning and simultaneous water rinsing of specific tooth areas by automatically triggering the occlusal pressure, and can immediately drain the wastewater, thus improving the accuracy, convenience and efficiency of teeth cleaning.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0057] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing, characterized in that, The device includes: multiple pressure-sensitive transducer units, multiple micro-flushing nozzles, a flexible base, and an ultrasonic water supply and drainage integrated control unit. Both the pressure-sensitive transducer and the micro-rinsing nozzle are fixedly disposed at the opening position of the flexible base; each pressure-sensitive transducer corresponds to one or more micro-rinsing nozzles, each pressure-sensitive transducer is electrically connected to the flexible base, and each micro-rinsing nozzle is connected to the pipeline of the flexible base; wherein, the pressure-sensitive transducer includes: a plurality of pressure-sensitive transducers arranged in a preset array; The purified water inlet of the ultrasonic water supply and drainage integrated control unit is connected to an external water source, the purified water outlet of the ultrasonic water supply and drainage integrated control unit is connected to the flexible base pipeline, the sewage inlet of the ultrasonic water supply and drainage integrated control unit is immersed in the user's oral fluid, and the sewage outlet of the ultrasonic water supply and drainage integrated control unit is connected to an external sludge collection tank. During the teeth cleaning process, the user applies biting force to the areas of the teeth that need cleaning. The pressure-sensitive transducer unit acquires the pressure data of all the micro-rinsing nozzles within its unit and transmits it to the ultrasonic water supply and drainage integrated control unit. Based on all the pressure data, the ultrasonic water supply and drainage integrated control unit determines whether to perform cleaning according to preset judgment conditions. If so, the ultrasonic water supply and drainage integrated control unit starts supplying water and power, and the current pressure-sensitive transducer performs ultrasonic fixed-point cluster cleaning. The micro-rinsing nozzles corresponding to the current pressure-sensitive transducer unit perform coordinated rinsing according to a preset rinsing strategy. At the same time, the ultrasonic water supply and drainage integrated control unit pumps the wastewater generated during the teeth cleaning process into an external sludge collection tank.

2. The array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing according to claim 1, characterized in that, The pressure-sensitive transducer comprises, from top to bottom, an upper focusing acoustic lens layer, an upper ultrasonic driving layer, an upper pressure sensing layer, a flexible electronic circuit layer, a lower pressure sensing layer, a lower ultrasonic driving layer, and a lower focusing acoustic lens layer; the upper ultrasonic driving layer, the upper pressure sensing layer, the lower pressure sensing layer, and the lower ultrasonic driving layer are all electrically connected to the flexible electronic circuit layer; the flexible electronic circuit layer is electrically connected to the flexible base. Both the upper and lower pressure sensing layers are used to collect pressure data; both the upper and lower ultrasonic driving layers are used to generate PWM acoustic wave signals; both the upper and lower focusing acoustic lens layers are used to constrain and guide the PWM acoustic wave signals to form a concentrated sound beam that acts on the user's tooth surface.

3. The array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing according to claim 2, characterized in that, A graphite heat dissipation layer is also laid between the upper focusing acoustic lens layer, the upper ultrasonic driving layer, the upper pressure sensing layer, the flexible electronic circuit layer, the lower pressure sensing layer, the lower ultrasonic driving layer, and the lower focusing acoustic lens layer for heat dissipation and cooling.

4. The array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing according to claim 1, characterized in that, The flexible base corresponds to the human gum and is shaped like a snake's belly.

5. The array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing according to claim 1, characterized in that, The micro-rinsing nozzles are a micron-sized purge nozzle array arranged in a ring at equal intervals.

6. The array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing according to claim 1, characterized in that, The micro-rinsing nozzle is electrically controlled and has an adjustable angle.

7. The array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing according to claim 1, characterized in that, The preset array is a quincunx array.

8. The array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing according to claim 1, characterized in that, The preset judgment condition is that cleaning is required when the median of the pressure data of all the micro-flushing nozzles in each pressure-sensitive transducer unit exceeds the pressure threshold; otherwise, cleaning is not required.

9. The array-type ultrasonic dental cleaning device based on pressure-sensitive self-flushing according to claim 1, characterized in that, The preset judgment condition is that cleaning is required when the average value of the pressure data of all the micro-rinsing nozzles in each pressure-sensitive transducer unit exceeds the pressure threshold; otherwise, cleaning is not required.

10. The array-type ultrasonic dental cleaning device based on pressure-sensitive self-rinsing according to claim 1, characterized in that, The preset flushing strategy involves flushing multiple times at preset time intervals by varying the water pressure.

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