Intelligent nursing device for preventing child oral cavity from being swallowed by mistake

Abstract

The invention discloses an intelligent nursing device for preventing a child oral cavity from being swallowed by mistake, belongs to the technical field of child oral cavity nursing equipment, and aims to solve the technical problems that an existing device is incomplete in mistake swallowed prevention mechanism, insufficient in adaptability and safety and prone to bucking. The device adopts a modular design of a main body unit, a replaceable cleaning head unit and an intelligent mistaken swallowing prevention control unit, the main body unit (a handle part) is an integrally formed hollow shell, double independent liquid inlet cabins (used for preheating pretreatment of cleaning liquid) and a vortex negative pressure pump set are arranged in the main body unit (a handle part), and a deep groove is formed from the top to the middle of the main body (the shell); the bottom of the groove (the top of the inner core) is provided with an electromagnetic adsorption and mechanical locking mechanism used for being connected with a head function module. The bottom of the whole handle is in butt joint with an external water tank through two pipelines and used for conveying cleaning liquid and recycling waste liquid. The replaceable cleaning head comprises a toothbrush type (liquid outlet holes are formed in the centers of bristles) and a water flushing type (a flushing head is arranged in the middle), innovative layouts of discharging liquid from the middle and absorbing liquid on two sides are adopted, and an infrared sensor (detecting the distance of gingiva and whether water in the mouth submerges the cleaning head) is integrated. Therefore, the replaceable cleaning head needs to be inserted into the main body through the long rod-shaped structure at the tail part to realize multiple fixed locking with the main body part. Meanwhile, when water in the mouth of the patient submerges the infrared sensor, the central processing unit reduces water output and enhances the water absorption function according to the reaction of middle and far infrared bands, and the problems of flushing fluid overflow and bucking are ingeniously solved; the intelligent control unit part is integrated with a central processing unit, a tightness detection sensing system and an alarm module, identifies the distance from the oral cavity tissue through an infrared sensor, and adaptively adjusts the cleaning mode (the negative pressure is increased by reducing the liquid outlet amount too close, and the pressure is increased too far, and the out-of-range prompt); and a quadruple error swallowing prevention mechanism (deep insertion butt joint, double fixation, tightness detection sound-light alarm and mobile phone APP linkage early warning) is synchronously constructed, and the operation of the pump set is suspended in case of abnormality. The oral care solution has the advantages that the effects of preventing mistaken swallowing and bucking are remarkable, the temperature and the cleaning force of the cleaning solution are controllable, and an implementation thought and method are provided for improving the oral care requirements of children of different age groups and achieving safety and practicability at the same time.

Description

Technical Field

[0001] This invention relates to the field of children's oral care equipment technology, specifically to an intelligent anti-swallowing children's oral cleaning device that combines replaceable head function with vortex negative pressure closed-loop cleaning, especially suitable for oral safety care scenarios for children aged 3-12. Background Technology

[0002] 1. Existing products often suffer from poorly designed dispensing and cleaning components (such as brush bristles) for their liquid delivery function. Most products lack an effective waste liquid recovery system, making it easy for children to accidentally swallow residual liquid and food debris during cleaning, leading to choking or gastrointestinal discomfort. Even the few products equipped with suction functions often suffer from poorly matched or spaced dispensing and suction holes, failing to form an effective "dispensing-cleaning-suction" closed loop. This results in low recovery efficiency, significant residue risks, and the risk of damaging children's delicate gums due to uncontrolled suction force.

[0003] 2. The replaceable brush head connection is unstable, resulting in poor hygiene and waterproofing. While detachable brush heads are a common design in the industry, existing products often use simple plug-and-play or snap-on connections, which are prone to loosening and falling off after prolonged use, posing a safety hazard. Some brush heads are too small, meeting the risk definition of "small parts" in GB 39669-2020 "General Safety Requirements for Consumer Products and Child Products". Market sampling data shows that such products pose a risk of choking if swallowed by children. In addition, the gaps at the connection points can easily trap dirt and bacteria, compromising the overall cleanliness and waterproofing of the device, potentially leading to liquid leakage and electrical malfunctions.

[0004] 3. Fixed functions and insufficient material safety make it difficult to balance cleaning effectiveness and oral health. Most products have fixed operating modes (such as vibration frequency and water pressure), failing to dynamically adjust according to the real-time state of a child's mouth (such as gum sensitivity and cleanliness). The combination of hard bristles and high-intensity vibration can easily damage gums. Furthermore, these devices lack the ability to adapt to the different oral structures of children at different ages (such as the primary dentition period of 3-6 years and the mixed dentition period of 7-12 years), leading to incomplete or excessive cleaning. The biocompatibility and antibacterial properties of some materials used in these products are insufficient, posing a risk of cross-infection with long-term use.

[0005] 4. Children have small oral cavities and sensitive swallowing reflexes. Traditional devices often suffer from improper dispensing volume control or lack of active liquid level monitoring, leading to excessive rinsing solution accumulating at the bottom of the mouth or near the throat. This not only increases the risk of choking but also causes gastrointestinal discomfort due to accidental swallowing of excessive cleaning solution. Furthermore, traditional devices often employ a "single dispensing channel + passive drainage" structure. Even products with active suction adjustment lack effective liquid level feedback. Even those with flow rate adjustment settings struggle to adapt to the varying oral sizes and dynamic care scenarios (such as changes in posture and swallowing movements during brushing), resulting in frequent spillage and choking. In short, they fail to create a closed-loop protection system of "dispensing - liquid level detection - suction control," thus limiting the safety and comfort of the device and significantly reducing children's enthusiasm for teeth cleaning. In summary, existing children's oral hygiene devices have significant shortcomings in terms of cleaning loop construction, replaceable head safety protection, dynamic functional adaptation, and material safety. There is an urgent need to develop a children's oral hygiene device that combines efficient cleaning, multiple anti-swallowing features, intelligent adaptation, and safety and hygiene characteristics to overcome the deficiencies of existing technologies and meet the core needs of children's oral care. Summary of the Invention

[0006] This invention adopts a modular design consisting of a "main body unit + replaceable cleaning head unit + intelligent anti-swallowing control unit". Each unit works collaboratively through precisely matched components to achieve multifunctional and highly safe oral care for children. The specific structure is as follows: I. Main Unit (Handle Section) Outer shell (1): It adopts a one-piece hollow design. The inner wall is fixed to the inner core assembly (9) by reinforcing ribs. The outer shell is equipped with an unlock button (21) and a gear adjustment button (22). The surface is frosted to enhance anti-slip properties. Bottom end cap (2): It is sealed to the bottom of the outer shell (1) by ultrasonic welding. It has a pre-reserved interface for the liquid outlet pipe and the liquid inlet pipe. The built-in sealing gasket ensures the sealing of the pipe connection and integrates the mounting slot of the battery (23). The battery (23) provides power to the entire device. The inner core assembly (9) is integrated inside the outer shell (1) and includes: a liquid storage tank group (14) with two independent liquid inlet chambers and heating elements (25) attached to the chamber walls for temporary storage and preheating of the cleaning liquid; a negative pressure pump group (13) with a vortex structure to provide bidirectional power and connects to the liquid storage tank group (14) and the liquid suction channel (11) respectively, responsible for outputting the cleaning liquid and recycling the waste liquid; and an intelligent control unit mounting bracket for fixing electronic components such as the central processing unit (17). The docking interface seat (3) is fixed to the top of the outer shell (1) and has the following features: the upper end of the liquid outlet channel (10) is connected to the liquid outlet hole (6) of the cleaning head, and the lower end is connected to the liquid storage tank group (14); the upper end of the liquid suction channel (11) is connected to the liquid suction hole (7) of the cleaning head, and the lower end is connected to the negative pressure pump group (13). Locking and connecting mechanism: The inner side of the docking interface seat (3) is fitted with: electromagnetic adsorption component (15): a ring electromagnet that provides adsorption force; Mechanical locking mechanism (16): Composed of mechanical lock motor (32) and mechanical lock head (33), which can be used with mechanical lock groove (34) at the head and tail of the cleaning head.

[0007] II. Replaceable cleaning head unit Replaceable cleaning head (4): Available in two types, toothbrush type and water-flushing type, both of which connect to the main unit via a deep insertion structure at the tail. Toothbrush head: A bristle assembly (5) is fixed at the front end, with a liquid outlet hole (6) in the center of the bristle assembly (5) and liquid suction holes (7) symmetrically distributed on both sides. A piezoelectric thin film sensor (19) is attached to the back of the brush head for real-time detection of brushing pressure. Water-flushing head: A flushing head is provided at the front end, with multiple liquid outlet holes (6) in the center of the flushing head, and liquid suction holes (7) distributed on both sides, without brush bristles (5). Both types of heads have a liquid outlet (6) and a suction port (7) on the cleaning surface, and integrate an infrared sensor (8). The sensor is electrically connected to the central processing unit (17) of the main unit via a sensor wire (18) to detect the distance between the head and the gum tissue in real time and send the feedback signal to the control unit. At the same time, taking advantage of the fact that the mid- and far-infrared band (2.5-25μm) is difficult to penetrate the water surface, whether the signal is transmitted back is used as a clear criterion for determining "water level exceeding the limit". The central processing unit (17) adjusts the suction, water output and motor horsepower.

[0008] III. Intelligent Anti-Swallowing Control Unit The central processing unit (17) is fixed on the control mounting bracket of the inner core assembly (9). It is electrically connected to the infrared sensor (8), piezoelectric film sensor (19), tightness detection sensing system (integrated in the docking interface 3), and alarm module (24) through sensor wires (18). At the same time, it establishes control connections with the negative pressure pump group (13), vibration motor (12), electromagnetic adsorption assembly (15), mechanical locking mechanism (16), APP linkage module (20), gear adjustment key (22), and battery (23). The central processing unit (17) dynamically adjusts the working mode based on the distance signal fed back by the infrared sensor (8). When the distance is too close, it reduces the liquid output and enhances negative pressure adsorption; when the distance is too far, it increases the liquid output pressure and optimizes recovery; when the signal is invalid, it triggers an alarm and stops the machine. The brushing pressure is monitored by a piezoelectric thin film sensor (19). When the pressure exceeds a safe threshold, the intensity of the vibration motor (12) is automatically reduced and a prompt is issued. Based on the "water level exceeds limit" judgment signal from the infrared sensor (8), the suction force, liquid output and output of the negative pressure pump group (13) and the vibration motor (12) are adjusted in linkage to prevent choking. Anti-accidental swallowing mechanism: 1. The docking interface (3) and the cleaning head (4) have a deep insertion docking structure, which provides basic physical stability.

[0009] 2. Electromagnetic adsorption component (15) + mechanical locking mechanism (16) to achieve dual active locking and secure connection.

[0010] 3. The tightness detection sensor system monitors the connection status in real time. When an abnormality occurs, it triggers the alarm module (24) to sound and light an alarm and suspends the operation of the negative pressure pump group (13) and the vibration motor (12).

[0011] 4. The APP linkage module (20) communicates with the mobile APP via Bluetooth. When the connection weakens due to long-term use, it sends a warning to the parents.

[0012] The above scheme forms a four-fold anti-accidental swallowing mechanism.

[0013] Dual unlocking function: When disassembling or replacing the replaceable cleaning head (4), the unlocking button (21) of the main unit and the mobile APP authorization verification must be pressed at the same time. Only then will the central processing unit (17) control the electromagnetic adsorption component (15) to cut off the power and the mechanical locking mechanism (16) to unlock, preventing children from operating it by mistake.

[0014] The cleaning intensity (such as vibration frequency and liquid pressure) can be manually switched via the gear adjustment key (22) to suit children of different ages.

[0015] IV. Beneficial Effects 1. A multi-layered anti-swallowing mechanism is formed through "deep insertion docking + electromagnetic adsorption + mechanical locking + real-time monitoring + APP early warning," combined with dual hardware and software unlocking, completely eliminating the risk of the head falling off and being swallowed. The "middle liquid discharge and side liquid suction" layout and intelligent water level control significantly reduce the risk of waste liquid residue and choking.

[0016] 2. It combines the functions of vibrating brushing and pulse water rinsing. The cleaning solution is preheated in the reservoir before being dispensed, and the temperature is suitable for children's oral cavity. The piezoelectric film sensor avoids excessive brushing force that may damage the gums.

[0017] 3. The infrared sensor enables dual monitoring of distance and liquid level, and the central processor adjusts the suction, water volume and horsepower accordingly to achieve dynamic adaptive cleaning, effectively improving the adaptability of children's oral care, solving the problems of easy choking and overflow of rinsing solution, and improving adaptability to different oral conditions and age groups.

[0018] 4. The one-piece molded outer shell and inner core assembly, combined with the sealing process of the bottom end cap, ensures that the overall structure is stable, sealed and waterproof. The modular design makes the head easy to disassemble and assemble and the joint is not easy to accumulate dirt, taking into account both durability and hygiene.

[0019] 5. The mobile app enables functions such as unlocking and authorization, receiving security alerts, and viewing nursing data, facilitating remote management and supervision by parents and enhancing the user experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this invention.

[0021] Figure 2 This is a schematic diagram of the internal core assembly and the outer shell of this invention.

[0022] Figure 3 This is a schematic diagram of the inner core assembly frame of this invention patent.

[0023] Figure 4 This is a schematic diagram showing the detailed structure of the cleaning head connector of this invention.

[0024] Figure 5 This is a detailed schematic diagram of the inner core and cleaning head connector of this invention patent.

[0025] Figure 6 This is a perspective view of the connecting portion of the present invention.

[0026] Figure 7 This is an analytical diagram of the head structure of the cleaning head (toothbrush) of this invention patent.

[0027] Figure 8 This is a schematic diagram of the physical system for preventing accidental ingestion of electrons, as per this invention patent.

[0028] Figure 9 This is a partial structural breakdown diagram of the present invention.

[0029] In the diagram: 1. Outer shell; 2. Bottom end cap; 3. Connecting interface; 4. Replaceable cleaning head; 5. Bristle assembly; 6. Liquid outlet; 7. Liquid suction port; 8. Infrared sensor; 9. Inner core assembly; 10. Liquid outlet channel; 11. Liquid suction channel; 12. Vibration motor; 13. Negative pressure pump assembly; 14. Liquid storage tank assembly; 15. Electromagnetic adsorption assembly; 16. Mechanical locking mechanism; 17. Central processing unit; 18. Sensor wire; 19. Piezoelectric film sensor; 20. APP 21. Linkage module; 22. Unlock button; 23. Gear adjustment button; 24. Battery; 25. Alarm module; 26. Heating element; 27. Charging interface; 28. Battery; 29. ​​Bottom interface of infusion tube; 30. Inner core assembly bracket; 31. Motor assembly; 32. Rotor; 33. Mechanical lock motor; 34. Mechanical lock head; 35. Mechanical lock slot; 36. Outlet water pipe connector; 37. Waste water pipe connector; 38. Data and power pin connectors; 39. Outlet water pipe socket; 40. Data and power socket. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," 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 invention and for 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1-9 The present invention provides an embodiment of a child oral cavity anti-swallowing intelligent care device, comprising a main body unit, a replaceable cleaning head unit, and an intelligent anti-swallowing control unit, wherein the main body unit, the replaceable cleaning head unit, and the intelligent anti-swallowing control unit work together through modular design; The main unit includes an outer shell 1, a bottom end cap 2, a docking interface seat 3, an inner core assembly 9, a liquid outlet channel 10, a liquid suction channel 11, a negative pressure pump assembly 13, a liquid storage tank assembly 14, an electromagnetic adsorption component 15, a mechanical locking mechanism 16, and a battery 23. The outer shell 1 is a one-piece hollow structure, serving as the main structure of the device, housing and protecting all internal components, providing a handheld interface. The one-piece molding and internal reinforcing rib design ensure structural strength and integrity, while the anti-slip treatment enhances grip safety and prevents slippage. An unlock button 21 and a gear adjustment button 22 are located on its exterior. The bottom end cap 2 is encapsulated at the bottom of the outer shell 1, sealing the bottom and providing external pipe interfaces and a battery compartment. Ultrasonic welding and sealing gaskets ensure excellent waterproof performance, preventing liquid ingress and damage to the circuitry. The modular interface facilitates charging and replenishment of cleaning fluid, and it has pre-drilled docking interfaces for the liquid outlet and inlet pipes with built-in sealing gaskets. The bottom end cap 2 integrates a battery mounting slot; the battery 23 provides the power required for wireless operation of the entire device, realizing wireless and portable operation, and facilitating multi-position use by children. The docking interface 3 is fixed to the top of the inner core assembly 9, integrating the liquid dispensing, liquid suction, data, power circuit, and mechanical locking mechanism into a compact unit, achieving fast, accurate, and reliable one-button docking. Its position corresponds to the bottom of the deep recess at the top of the outer shell 1, and it is equipped with a liquid dispensing channel 10 and a liquid suction channel 11. An electromagnetic adsorption component 15 and a mechanical locking mechanism 16 are embedded on one side. The electromagnetic adsorption component 15 is a ring electromagnet, providing sufficient adsorption force. Through electromagnetic force, it provides the first strong and instantaneous adsorption and fixing force for the head connection, resulting in a quick and firm connection without mechanical wear. It releases upon power failure and is easy to control. The mechanical locking mechanism 16 provides the second layer of physical locking for the head connection. The lock head extends and engages with the head groove to achieve mechanical interlocking, providing reliable mechanical locking even in the event of power failure, forming a secondary anti-detachment system with the electromagnetic adsorption component 15. The inner core assembly 9 integrates a liquid storage tank group 14, a negative pressure pump group 13, and a mounting bracket for installing the intelligent control unit. Serving as the supporting framework for internal functional modules, it integrates core liquid circuits and electrical circuits. Its modular design facilitates assembly, maintenance, and upgrades, improving production efficiency and reliability. The liquid storage tank group 14 has two independent inlet chambers; these chambers independently store clean cleaning fluid and recycled waste fluid, respectively. Heating elements 25 are fitted into the walls of the two independent inlet chambers of the liquid storage tank group 14. The heating temperature of the heating elements 25 is suitable for children's oral cavity. The top of the liquid storage tank group 14 is sealed to the inner wall of the outer shell 1. The sealing process ensures a tight seal, and the heating element preheats the output cleaning fluid to prevent cross-contamination between new and waste fluids. Preheating the cleaning fluid to a suitable body temperature avoids cold stimulation and significantly improves children's comfort and acceptance. The negative pressure pump group 13 has a vortex structure, pumping out the cleaning fluid in the forward direction and generating negative pressure to suck up the waste fluid in the reverse direction. The vortex pump has the advantages of stable operation, low noise, and small pulsation, which can provide children with a gentler and more stable rinsing and suction experience. It is connected to the liquid storage tank group 14 and the liquid suction channel 11 through pipelines to form a closed loop of cleaning fluid delivery and waste fluid recycling. The replaceable cleaning head unit includes a replaceable cleaning head 4, which has a liquid outlet 6 and a liquid suction hole 7. The liquid outlet 6 sprays out cleaning liquid; the liquid suction hole 7 recovers waste liquid mixed with residue under negative pressure and integrates an infrared sensor 8. The infrared sensor 8 is integrated into the cleaning head and is used to detect the distance to the gum tissue, emit and receive infrared signals to achieve dual detection, and sense the distance between the brush head and the gum in real time, providing data for intelligent adjustment. Utilizing the characteristic that the specific infrared band 2.5-25μm cannot penetrate liquid water, when the liquid level in the oral cavity is too high and submerges the sensor, the signal is blocked, and the controller can determine that "the water level exceeds the limit", thereby automatically increasing the suction power. This provides a simple and efficient liquid level detection solution that is non-contact and has no additional parts. The tail of the replaceable cleaning head 4 is a long rod-shaped structure that can extend into the deep recess of the main unit shell 1 and be adapted to the docking interface seat 3 to trigger the electromagnetic adsorption component 15 and the mechanical locking mechanism 16 to achieve multiple fixation. The intelligent anti-swallowing control unit includes a central processing unit 17, which is fixed on the control mounting bracket of the inner core assembly 9. Through sensor wires 18, it connects to an infrared sensor 8 and a tightness detection sensing system to monitor the physical tightness of the connection between the head and the handle in real time. It can provide early warnings of mechanical wear or aging caused by long-term use, alerting parents before the connection reliability declines but before complete failure, thus enabling preventative maintenance and eliminating potential hazards. An alarm module 24 is electrically connected, providing status feedback and abnormal warnings to the user through audible and visual signals. This immediate and intuitive feedback mechanism indicates situations such as excessive pressure, abnormal connection, and excessively high water level, and works in conjunction with the negative pressure pump unit. 13. Electromagnetic adsorption component 15. Mechanical locking mechanism 16. Unlock button 21. Gear adjustment button 22 establish a control connection; the unlock button 21 and gear adjustment button 22 are responsible for the human-computer interaction input of safe unlocking and intensity adjustment, respectively. The dual unlock button + APP completely puts the disassembly authority in the hands of parents. The gear adjustment allows the device to adapt to the sensitivity and cleaning needs of children aged 3-12. The central processor 17 is configured to identify the distance between the cleaning head and oral tissue through the infrared sensor 8 and adaptively adjust the cleaning mode accordingly, building a four-fold anti-swallowing mechanism. The cleaning head needs to be unlocked via the unlock button 21 and the mobile APP to be installed or removed. Dual-authorized, the outer shell 1 is made of food-grade polypropylene material with an anti-slip surface. It features several sets of longitudinal reinforcing ribs and transverse support rings. The replaceable cleaning head 4 is either a toothbrush-type or a water-rinsing cleaning head. This functional terminal directly contacts the oral cavity to perform brushing or rinsing tasks. Its modular design allows for head replacement based on the child's age, dental condition, or preference, making it multi-functional, economical, and hygienic. The deep-insertion design with a long rod-shaped tail increases torque, making the connection more stable. It offers two mainstream cleaning methods to suit different needs, such as daily brushing or intensive rinsing, achieving physical friction cleaning or water-jet rinsing cleaning respectively. The toothbrush-type cleaning head also includes a bristle assembly 5 and a piezoelectric film sensor 19 attached to the back of the brush head to sense the pressure applied to the teeth during brushing, preventing children or parents from damaging their gums due to excessive force.The brushing head automatically reduces its frequency or provides a reminder when the pressure is too high, fostering a gentle brushing habit. A piezoelectric film sensor 19 is electrically connected to the central processing unit 17 to detect brushing pressure. There are 3-4 outlet holes 6 located in the center of the replaceable cleaning head 4, with a diameter of 0.8-1.2mm. They employ a center-outlet, side-suction layout, where the cleaning liquid exits from the center and waste liquid is sucked up from both sides. This layout instantly surrounds and removes waste liquid from the cleaning area, greatly reducing liquid residue in the mouth and the risk of swallowing. The large-diameter, oval-shaped suction holes are specifically designed for children's food residue, vegetable scraps, and meat pieces, preventing clogging. Suction holes 7 are symmetrically distributed on both sides of the outlet holes 6, with 2-3 holes on each side and a diameter of 2.0-2.5mm. These holes are designed to absorb large particles of residue and are oval in shape. The front of the water-flushing cleaning head has a flushing head with an outlet hole 6 in the center, flanked by holes on both sides. The device has multiple suction holes 7. The adaptive adjustment function of the central processing unit 17 is as follows: when it detects that the cleaning head is too close to the oral tissue, it reduces the liquid output and enhances the suction force of the negative pressure pump group 13; when it detects that the distance is too far, it increases the liquid output pressure and optimizes the recovery efficiency; when no effective distance range is detected, the control device stops operating. The mechanical locking mechanism 16 consists of a mechanical locking motor 32 and a mechanical locking head 33. The outer side of the tail of the replaceable cleaning head 4 is provided with a mechanical locking groove 34 that cooperates with the mechanical locking head 33. When the tail of the replaceable cleaning head 4 is docked with the main unit, the mechanical locking motor 32 drives the mechanical locking head 33 to extend and lock into the mechanical locking groove 34, which together with the electromagnetic adsorption component 15 achieves double fixation. The central processing unit 17 is connected to the APP linkage module 20 to realize Bluetooth communication between the device and the smartphone, thus expanding the control and management boundaries.Parents can remotely authorize unlocking via the APP to prevent children from accidentally disassembling the device, receive alerts about tightness, and view brushing data, greatly enhancing parental supervision and safety control. When disassembling or replacing the replaceable cleaning head 4, the unlock button 21 must be pressed simultaneously and authorization verification must be performed via the mobile APP. The central processing unit 17 controls the electromagnetic adsorption component 15 to cut off power and drives the mechanical locking mechanism 16 to retract the lock head. The central processing unit 17 monitors the connection status in real time. If the mechanical lock status is abnormal, the alarm module 24 is triggered and operation is suspended. The APP linkage module 20 connects to the mobile APP via Bluetooth. The connection is designed to send a warning when prolonged use causes the connection to loosen. The central processing unit 17 monitors the connection status between the cleaning head and the main unit in real time. When the mechanical lock is abnormal, it triggers the alarm module 24 and pauses the device operation. The APP linkage module 20 connects to the mobile APP via Bluetooth. When prolonged use causes the connection to loosen, it sends a warning through the mobile APP. The gear adjustment button 22 is used to manually switch between multiple cleaning intensities to suit children of different ages. The alarm module 24 includes a sound element and a light element, which emit sound and light warnings when the device is abnormal. The infrared sensor 8 is a sensor that can identify multiple wavelengths. The central processing unit 17 is configured to adjust the cleaning mode based on the distance signal fed back by the infrared sensor 8, and to use the characteristic that the mid- and far-infrared bands are difficult to penetrate the water surface, using the normal return of the infrared signal as the basis for determining whether the water level in the oral cavity exceeds the limit. It also links and controls the suction power of the negative pressure pump group 13, the liquid output of the liquid outlet 6, and the output horsepower of the vibration motor 12 to achieve distance control. The system features adaptive adjustment and dynamic balance control for water level exceeding limits. The docking interface 3 is equipped with a liquid outlet pipe connector 35, a waste liquid pipe connector 36, and a data and power pin connector 37. The replaceable cleaning head 4 has a cylindrical insertion structure at its tail. The end of this structure has a water outlet pipe connector 38 adapted to the liquid outlet pipe connector 35, a waste liquid pipe connector 39 adapted to the waste liquid pipe connector 36, and a data and power socket 40 adapted to the data and power pin connector 37. This allows for the transmission of power, control signals, and sensor data between the head and the handle. Reliable electrical connections ensure the realization of intelligent functions. The pin-socket connection is stable and has a long lifespan. When the replaceable cleaning head 4 docks with the docking interface 3 via the tail insertion structure, the liquid outlet pipe connector 35 and the water outlet pipe connector 38 are sealed together, the waste liquid pipe connector 36 and the waste liquid pipe connector 39 are sealed together, and the data and power pin connector 37 and the data and power socket 40 are electrically connected, enabling the delivery of cleaning fluid, waste liquid recovery, and the transmission of signals and power. Specific usage instructions: Parents insert the selected cleaning head deeply into the handle. Upon connection, the electromagnetic adsorption component 15 immediately generates strong suction. Simultaneously, the mechanical lock motor 32 drives the lock head 33 to extend and engage with the head locking groove 34, completing a double rigid lock. The liquid outlet pipe connector 35, waste liquid pipe connector 36, and the data and power pin connector 37 are sealed together with the data and power socket 40. The entire machine is ready for use. After the parent selects the appropriate setting, the child begins use. The negative pressure pump 13 starts, pumping preheated cleaning solution from the storage tank and spraying it onto the teeth through the outlet port 6. The infrared sensor 8 detects the distance between the brush head and the gums in real time and sends the data to the central processor 17. The processor dynamically adjusts the pump power and water pressure according to different distances (near, medium, far) to achieve adaptive force. When using a toothbrush, the piezoelectric film sensor 19 monitors the brushing pressure. If the pressure is too high, the processor commands the vibration motor 12 to reduce its frequency and trigger a gentle alarm. Simultaneously, the negative pressure pump assembly 13 operates continuously on the suction side, efficiently removing waste liquid and residue from the mouth through the suction port 7, forming a localized fluid closed loop that allows for immediate flushing and suction, greatly reducing the amount of liquid that can be swallowed. The infrared sensor 8 monitors simultaneously; if the liquid level in the mouth becomes too high, its specific wavelength infrared signal is blocked by the water surface, and the processor immediately determines "water level exceeded limit," and activates the suction of the negative pressure pump assembly 13 to quickly lower the liquid level, preventing choking at the source. The tightness detection system monitors the connection status throughout the process. The central processing unit 17 monitors the status of all sensors and locking mechanisms. If any abnormality occurs, such as loose connection, abnormal locking mechanism, continuous excessive liquid level, or excessive pressure, the system will immediately issue an audible and visual warning through the body alarm module 24 and push an alarm to the parent's mobile phone through the APP linkage module 20. If the connection fails, the processor will forcibly stop all power output to ensure absolute safety.

[0035] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics of the solutions is not described in detail here. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A child oral cavity anti-swallowing intelligent care device, characterized in that: It includes a main body unit, a replaceable cleaning head unit, and an intelligent anti-swallowing control unit, which work together through a modular design; The main unit includes an outer shell (1), a bottom end cap (2), a docking interface seat (3), an inner core assembly (9), a liquid outlet channel (10), a liquid suction channel (11), a negative pressure pump group (13), a liquid storage tank group (14), an electromagnetic adsorption component (15), a mechanical locking mechanism (16), and a storage battery (23). The outer shell (1) is a hollow structure formed in one piece, and an unlock button (21) and a gear adjustment button (22) are provided on its exterior. The bottom end cap (2) is encapsulated at the bottom of the outer shell (1), and has a pre-reserved interface for the liquid outlet pipe and the liquid inlet pipe. The bottom end cap (2) integrates a battery mounting slot. The docking interface seat (3) is fixed to the top of the inner core assembly (9), and is provided with a liquid outlet channel (10) and a liquid suction channel (11) inside. An electromagnetic adsorption component (15) and a mechanical locking mechanism (16) are embedded on one side. The inner core assembly (9) integrates a liquid storage tank group (14), a negative pressure pump group (13), and a mounting bracket for installing an intelligent control unit; the liquid storage tank group (14) is provided with two independent liquid inlet chambers; the negative pressure pump group (13) is a vortex structure, which is connected to the liquid storage tank group (14) and the liquid suction channel (11) through pipelines respectively, forming a closed loop of cleaning liquid transportation and waste liquid recycling; The replaceable cleaning head unit includes a replaceable cleaning head (4), which has a liquid outlet (6) and a liquid suction hole (7) and integrates an infrared sensor (8); the tail of the replaceable cleaning head (4) is a long rod-shaped structure that can extend into the deep recess of the main unit shell (1) and be adapted to the docking interface seat (3) to trigger the electromagnetic adsorption component (15) and the mechanical locking mechanism (16) to achieve multiple fixation; The intelligent anti-swallowing control unit includes a central processing unit (17), which is fixed on the control mounting bracket of the inner core assembly (9). It is electrically connected to the infrared sensor (8), the tightness detection sensing system, and the alarm module (24) through the sensor wire (18), and establishes a control connection with the negative pressure pump group (13), the electromagnetic adsorption component (15), the mechanical locking mechanism (16), the unlock button (21), and the gear adjustment button (22). The central processing unit (17) is configured to identify the distance between the cleaning head and the oral tissue through the infrared sensor (8) and adaptively adjust the cleaning mode accordingly.

2. The intelligent oral care device for preventing accidental swallowing in children according to claim 1, characterized in that: The outer shell (1) is made of food-grade polypropylene material, and its surface is treated with anti-slip treatment. It is equipped with several sets of longitudinal reinforcing ribs and transverse support rings inside.

3. The intelligent oral care device for preventing accidental swallowing in children according to claim 1, characterized in that: The walls of the two independent inlet chambers of the liquid storage tank group (14) are fitted with heating elements (25), the heating temperature of the heating elements (25) is suitable for children's oral cavity, and the top of the liquid storage tank group (14) is connected to the inner wall of the outer shell (1) by a sealing and fixing process.

4. The intelligent oral care device for preventing accidental swallowing in children according to claim 1, characterized in that: The replaceable cleaning head (4) is a toothbrush-type cleaning head or a water-flushing cleaning head; the toothbrush-type cleaning head also includes a bristle assembly (5) and a piezoelectric thin film sensor (19) attached to the back of the brush head. The piezoelectric thin film sensor (19) is electrically connected to the central processing unit (17) and is used to detect brushing pressure. The number of liquid outlet holes (6) is 3-4, which are opened in the middle of the replaceable cleaning head (4) and have a diameter of 0.8-1.2 mm. The liquid suction holes (7) are symmetrically distributed on both sides of the liquid outlet holes (6), with 2-3 on each side and a diameter of 2.0-2.5 mm. The shape of the holes is elliptical.

5. The intelligent oral care device for preventing accidental swallowing in children according to claim 4, characterized in that: The front end of the water-flushing cleaning head is provided with a flushing head, and the flushing head has a liquid outlet hole (6) at the center position, and multiple liquid suction holes (7) are symmetrically distributed on both sides.

6. The intelligent oral care device for preventing accidental swallowing in children according to claim 1, characterized in that: The adaptive adjustment function of the central processing unit (17) is as follows: when it is detected that the cleaning head is too close to the oral tissue, the liquid output is reduced and the suction force of the negative pressure pump group (13) is enhanced; when it is detected that the distance is too far, the liquid output pressure is increased and the recovery efficiency is optimized; when no effective distance range is detected, the control device stops operating.

7. The intelligent oral care device for preventing accidental swallowing in children according to claim 1, characterized in that: The mechanical locking mechanism (16) consists of a mechanical locking motor (32) and a mechanical locking head (33). The outer side of the tail of the replaceable cleaning head (4) is provided with a mechanical locking groove (34) that cooperates with the mechanical locking head (33). When the tail of the replaceable cleaning head (4) is connected to the main unit, the mechanical locking motor (32) drives the mechanical locking head (33) to extend and lock into the mechanical locking groove (34), thus achieving double fixation together with the electromagnetic adsorption component (15). The central processing unit (17) is connected to the APP linkage module (20). When disassembling or replacing the replaceable cleaning head (4), the unlock button (21) must be operated at the same time and authorized through the mobile APP. The central processing unit (17) controls the electromagnetic adsorption component (15) to be powered off and drives the mechanical locking mechanism (16) to retract the lock head.

8. The intelligent oral care device for preventing accidental swallowing in children according to claim 7, characterized in that: The central processing unit (17) monitors the connection status between the cleaning head and the main unit in real time. When the mechanical lock is abnormal, it triggers the alarm module (24) and suspends the operation of the device. The APP linkage module (20) is connected to the mobile APP via Bluetooth. When the connection tightness decreases due to long-term use, a warning prompt is sent through the mobile APP.

9. The intelligent oral care device for preventing accidental swallowing in children according to claim 1, characterized in that: The gear adjustment key (22) is used to manually switch between multiple cleaning intensities to suit children of different ages. The alarm module (24) includes a sound-emitting element and a light-emitting element, which emits sound and light prompts when the device malfunctions.

10. The intelligent oral care device for preventing accidental swallowing in children according to claim 1, characterized in that: The infrared sensor (8) is a sensor that can identify multiple wavebands. The central processing unit (17) is configured to adjust the cleaning mode according to the distance signal fed back by the infrared sensor (8), and to use the characteristic that the mid- and far-infrared waves are difficult to penetrate the water surface to determine whether the water level in the oral cavity exceeds the limit by using whether the infrared signal is transmitted normally. It also controls the suction power of the negative pressure pump group (13), the discharge volume of the liquid outlet (6), and the output horsepower of the vibration motor (12).

11. The intelligent oral care device for preventing accidental swallowing in children according to claim 1, characterized in that: The docking interface seat (3) is provided with a liquid outlet pipe connector (35), a waste liquid pipe connector (36), and a data and power pin connector (37); the tail of the replaceable cleaning head (4) is provided with a cylindrical insertion structure, and the end of the insertion structure is provided with a water outlet pipe connector (38) adapted to the liquid outlet pipe connector (35), a waste liquid pipe connector (39) adapted to the waste liquid pipe connector (36), and a data and power socket (40) adapted to the data and power pin connector (37). When the replaceable cleaning head (4) is docked with the docking interface seat (3) through the tail insertion structure, the cleaning liquid is transported, the waste liquid is recycled, and the signal and power are transmitted.

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