Pneumatic rotary water dirt removal dental odontoscope

Abstract

The utility model discloses a pneumatic rotary water dirt removal dental mouth mirror, and belongs to the technical field of dental auxiliary instruments. The protective frame is fixed with one end of the handle, the top side of the protective frame is an opening, and the peripheral side is provided with an air inlet; the protective cover is rotationally connected in the protective frame, a sealing cavity is formed in the protective cover, and one side, facing an opening of the protective frame, of the protective cover is of a transparent structure; the mirror surface is coaxially arranged in the sealing cavity and fixed with the protection frame, the mirror surface faces the opening and is parallel to the transparent structure, and a working gap is reserved between the mirror surface and the transparent structure; the peripheral side of the protective cover right faces the air inlet, and when airflow enters the air inlet, the protective cover can rotate. Dynamic waterproof and antifouling effects are achieved through the synergistic effect of centrifugal force and airflow, liquid is effectively prevented from accumulating, flowing or forming a water film on the transparent baffle, and therefore high light transmission and definition of the transparent baffle are maintained to the maximum extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of dental auxiliary instruments, and in particular relates to a pneumatic rotary water-removing and dirt-removing dental mouth mirror. Background Art

[0002] The oral cavity is the beginning of the digestive tract. It contains organs such as the teeth and tongue. Its anterior wall is formed by the lips, its lateral walls by the cheeks, its roof by the palate, and its floor by structures such as the mucosa and muscles. The oral cavity is divided into the anterior and lateral oral vestibule and the posterior and medial oral cavity by the upper and lower dental arches. A wide variety of oral diseases exist, with periodontitis, oral ulcers, and caries being common. Diagnosis and treatment of these conditions often require the use of an oral mirror. This device effectively visualizes blind spots within the oral cavity, significantly enhancing diagnosis and treatment. However, in existing applications, oral mirrors often become contaminated with water after placement in the patient's mouth, severely impairing vision. If the mirror is not cleaned promptly, liquid contamination increases the risk of compound contamination. Frequent mirror wiping also prolongs treatment time and can damage the mirror, reducing reflective quality. Furthermore, after each wipe, the mirror must be re-inserted into the patient's mouth and readjusted in position and angle, significantly increasing the physician's workload.

[0003] In response to the above technical problems, the current technical solutions mainly include the following:

[0004] Solution 1: Heating the mirror to prevent fogging: This method uses a built-in resistor to heat the mirror, using the temperature difference to prevent condensation (authorization announcement number 218922528U). The core drawbacks of this technical solution are: (1) frequent battery replacement is required; (2) the edge temperature of the mirror can reach 42°C, which may burn the oral mucosa; (3) it accelerates the oxidation of the mirror coating, reducing its service life; and (4) due to the special characteristics of the oral environment, the stability and reliability of this structure are poor, and it is prone to short circuits.

[0005] Solution 2: Hydrophobic coating: This solution involves spraying a fluoropolymer (such as PTFE) or nano-silica coating on the mirror surface. The technical drawbacks of this solution are: (1) poor mechanical durability, with the coating easily damaged; (2) deterioration of optical properties, resulting in image distortion; (3) poor chemical compatibility, with sodium hypochlorite disinfectant causing cracks in the coating; and (4) poor biosafety, with the coating material having side effects on the human body.

[0006] Solution 3: Air jet dewatering: This technical solution uses air holes on the back of the mirror body to clean the mirror surface with airflow (authorization announcement number CN213721861U). The core drawbacks of this method are: (1) increased patient discomfort, as the airflow directly impacts sensitive areas of the oral cavity (such as the soft palate and the root of the tongue), triggering the vomiting reflex; (2) low water removal efficiency: the airflow on the mirror can only remove water droplets with a diameter greater than 1 mm and is ineffective for thin water films (less than 0.1 mm). Utility Model Content

[0007] The utility model provides a pneumatic rotary water- and dirt-removing dental mouth mirror which realizes dynamic waterproofing and anti-fouling through the coordinated action of centrifugal force and airflow and has no obvious impact on the oral mucosa.

[0008] A pneumatic rotary water-removing dental mouth mirror, comprising:

[0009] handle;

[0010] A protective frame fixed to one end of the handle, the top side of the protective frame is open, and the surrounding side is provided with an air inlet;

[0011] A protective cover connected to the protective frame, wherein the protective cover has a sealed cavity and a transparent structure on the side facing the protective frame;

[0012] a mirror coaxially disposed in the sealed cavity and fixed to the protective frame, the mirror facing the opening and parallel to the transparent structure with a working gap between the two;

[0013] The peripheral side of the protective cover faces the air inlet, and when the air flow enters the air inlet, the protective cover can rotate.

[0014] The mirror surface is arranged parallel to the transparent structure, which can avoid refraction to the minimum extent. During processing, the transparent result of the corresponding structure can be designed according to the shape of the mirror surface. For example, if the mirror surface is set to an arc shape, the transparent result is correspondingly set to an arc shape, and vice versa.

[0015] The mirror and protective frame are fixed to each other and in a static state. The mirror's central axis is coaxial with the protective cover's rotational center, with a rotational gap between the mirror and the protective cover ensuring excellent reflection. Simultaneously, external airflow drives the protective cover to rotate, generating centrifugal force to remove water stains and other contaminants, maintaining the transparency of the transparent structure and further enhancing the mirror's imaging quality. The air inlet can be directly connected to an external air source or utilize the dental equipment's existing air source.

[0016] Furthermore, an airway is provided within the handle, the outlet of which interfaces with the air inlet, and the other end of the handle is connected to an external air source. This technical solution integrates the airway directly into the handle, further improving the compactness of the entire structure while preventing interference with dental procedures.

[0017] Furthermore, the protective frame is surrounded by a panel structure, on which the air inlet is located; the bottom of the protective frame is a hollow structure. This technical solution, with the panel structure around the protective frame, prevents the high-speed airflow generated by the high-speed rotation of the protective cover from affecting sensitive periodontal areas and scratching soft tissues such as the oral mucosa. The hollow structure design also allows water and other pollutants that enter the protective frame to be discharged immediately.

[0018] Furthermore, a fan blade structure is provided on the lower side of the protective cover, facing the air inlet. The fan blade structure further improves the conversion of external airflow into the rotational force of the protective cover, thereby increasing the rotation speed and dirt removal ability of the protective cover.

[0019] Furthermore, the protective cover includes a pneumatic rotating component and a transparent baffle that are coaxially arranged and sealed and fixed to each other at the periphery to form the sealed cavity. The transparent baffle is located on the top side, the pneumatic rotating component is located on the bottom side, and the fan blade structure is arranged on the periphery of the outer wall of the pneumatic rotating component.

[0020] Furthermore, the transparent baffle is an acrylic transparent plate with a thickness of 0.3-0.8 mm.

[0021] Furthermore, the pneumatic rotating component, the protective frame and the handle are all made of plastics; for example, polylactic acid (PLA), a biodegradable material with excellent performance, can be used, which can be prepared by three-dimensional printing or injection molding.

[0022] Furthermore, the fan blade structure and the pneumatic rotating component are integrally formed and can be made of plastic parts, etc., directly through injection molding or three-dimensional printing, further reducing the overall weight of the protective cover.

[0023] Furthermore, a central axis is provided at the bottom of the protective frame, and a positioning groove is provided at the top of the central axis; the protective cover is connected to the outer wall of the central axis; and the mirror is fixed in the positioning groove via a positioning axis. With this structure, while the protective cover is connected, the mirror is also fixed statically. Furthermore, a transfer hole is provided at the bottom of the protective cover. During actual installation, the protective cover and the central axis can be connected by using a bearing and a transfer hole. When the positioning axis and the positioning groove of the mirror are fixed, the positioning axis can be inserted into the positioning groove to complete the initial positioning, i.e., mechanical positioning, and then an adhesive can be used to further fix the two.

[0024] Furthermore, the transparent baffle is a transparent structure with the same curvature as the mirror surface. Furthermore, the mirror surface is arranged close to the inner wall of the transparent baffle, but with a gap to avoid rotation.

[0025] Furthermore, the pneumatic rotating component and the periphery of the transparent baffle are sealed and fixed by glue; or, the pneumatic rotating component and the periphery of the transparent baffle are sealed and fixed by a snap-fit ​​structure with a seal.

[0026] Furthermore, a valve for controlling the airway is fixed on the handle.

[0027] Furthermore, the valve is a boost valve.

[0028] Compared with the prior art, the innovations of this utility model are as follows:

[0029] Innovation 1: Pneumatic centrifugal self-cleaning system (core breakthrough):

[0030] This new design's air inlet connects directly to the low-pressure compressed air from a dental treatment chair, converting the compressed air pressure into rotational force. This, through a precise air path, drives the fan blades, driving the transparent baffle to rotate at high speed. This design utilizes centrifugal force (F = mω²r) for passive, real-time cleaning, eliminating the need for additional energy or manual wiping. Splashing liquid contaminants (water mist, blood, saliva) are radially flung away from the mirror surface within milliseconds, completely eliminating the problem of visual field interruption caused by fogging and staining in traditional dental mirrors.

[0031] Innovation 2: Rotating baffle-static mirror separation structure (optical design innovation):

[0032] The utility model adopts the method of rigidly fixing the mirror surface to the top of the central axis of the protective frame (static), while the transparent baffle rotates synchronously with the pneumatic rotating component. The two are separated by an air layer, one static and the other dynamic, taking into account both imaging and decontamination: (1) Dynamic anti-fouling, using the rotation of the protective cover to achieve high-speed rotation of the transparent baffle to perform the cleaning function, protecting the internal static mirror surface from contamination; (2) Optical zero loss: The static mirror surface avoids motion blur, ensuring that the reflected image is distortion-free and high-fidelity; (3) Improved durability: The mirror surface is physically isolated from the corrosive oral environment, extending the life of the optical components.

[0033] Innovation point three: integrated pneumatic-mechanical transmission system (engineering innovation):

[0034] This new device utilizes a three-stage coupling structure: a central shaft, bearings, and pneumatic rotating components. The bearings provide ultra-low friction rotational support; the central shaft acts as a rigid carrier to ensure concentricity; and the pneumatic rotating components convert gas kinetic energy into stable torque. This pneumatic drive system offers significantly greater reliability than electric motors in humid environments, without the risk of electromagnetic interference.

[0035] Innovation point 4: Plug-and-play gas circuit compatible design (application innovation):

[0036] This utility model can be equipped with a standardized airway interface on the handle, which can be directly adapted to the existing oral comprehensive treatment chair airway (pressure range 0.2-0.6MPa) through the standardized airway interface, without the need for equipment modification. It can simultaneously achieve: (1) zero-cost deployment: utilizing the existing air source infrastructure of the dental clinic; (2) maintenance-free design: no batteries, no circuits; (3) seamless operation: no need to change the doctor's existing workflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a structural schematic diagram of a pneumatic rotary water-removing dental mouth mirror in the embodiment of the present invention.

[0038] Figure 2 for Figure 1 Disassembled view of the handle and main body of the mouth mirror shown.

[0039] Figure 3 for Figure 1 Disassembled view of the airway valve and airway of the mouth mirror shown.

[0040] Figure 4 It is a structural schematic diagram of two connection methods between the transparent baffle and the rotating component.

[0041] The parts corresponding to the numbers are: 1-transparent baffle; 2-mirror; 3-pneumatic rotating part; 4-fan blade structure; 5-bearing; 6-protective frame; 7-center axis; 8-airway outlet in the handle; 9-handle; 10-airway in the handle; 11-airway inlet connector in the handle; 12-straight-through valve airway outlet; 13-straight-through valve; 14-straight-through valve airway inlet connector; 15-extension hose airway outlet; 16-extension hose; 17-extension hose airway inlet; 18-sealing ring. DETAILED DESCRIPTION

[0042] The present invention will be further described below with reference to the accompanying drawings:

[0043] like Figure 1 and Figure 2 The figure shows a pneumatic rotary water-removing dental mirror, comprising a handle 9; a protective frame 6 fixed to one end of the handle; a protective cover (composed of a transparent baffle 1 and a pneumatic rotating component 3) mounted within the protective frame; a mirror surface 2 disposed within a sealed cavity of the protective cover; a through-valve 13 and an extension hose 16. The through-valve 13 acts as a shut-off valve for the airway, controlling the on / off of airflow. The transparent baffle 1 and mirror surface 2 are arranged parallel to each other.

[0044] See also Figure 3The handle 9 adopts a hollow rod structure, and the hollow part constitutes the airway 10 in the handle, and the airway outlet 8 in the handle is arranged opposite the air inlet of the protective frame. An airway inlet connector 11 in the handle is provided at one end of the handle 9 away from the protective frame. The airway inlet connector 11 in the handle is connected to the external air source through a straight-through valve 13 and an extension hose 16. The airway inlet connector 11 in the handle can adopt a standard connector. Specifically, the straight-through valve airway outlet 12 of the straight-through valve 13 is connected to the airway inlet connector 11 in the handle, the straight-through valve airway inlet connector 14 of the straight-through valve 13 is connected to the extension hose airway outlet 15 of the extension hose 16, and the extension hose airway inlet 17 of the extension hose 16 is connected to the external air source. The straight-through valve 13 can adopt a pressurizing valve to increase the airflow speed. Or the airway inlet connector 11 in the handle can also be directly connected to the existing dental air source equipment.

[0045] The protective frame 6 has an opening C on its top and a panel structure 21 around its sides, on which its air inlet is located. The bottom of the protective frame is a hollow structure. In actual production, the protective frame 6 and handle 9 can be integrally molded, perhaps made of plastic. Of course, other methods can also be used to secure the two. Once secured, the airway outlet 8 of the handle 9 aligns with the air inlet of the protective frame, ensuring smooth airflow into the protective frame.

[0046] A central axis 7 is provided in the middle of the inner wall at the bottom of the protective frame 6, and a positioning groove 19 is provided at the center of the top of the central axis 7; the bottom of the protective cover is connected to the outer wall of the central axis 7 through a bearing 5; the mirror 2 is fixed in the positioning groove through the positioning axis, and the two can be further fixed by adhesive.

[0047] The protective cover comprises a pneumatic rotating component 3 and a transparent baffle 1, which are sealed and fixed to each other around the periphery to form the sealed cavity. The transparent baffle 1 is positioned toward the opening of the protective frame 6 and can be made of transparent acrylic or other transparent materials such as glass. Its outer diameter (approximately 25 mm) is slightly larger than the outer diameter of the mirror 2 (approximately 20 mm) and slightly smaller than the inner diameter of the opening of the protective frame 6 (approximately 28 mm) to prevent friction and interference with the protective frame 6 or the mirror 2 during rotation. The thickness is generally approximately 0.5 mm. The transparent baffle 1 and the mirror 2 can have the same curvature to enhance the final imaging effect of the mirror 2.

[0048] The pneumatic rotating component 3 can be made of plastic, and a fan blade structure 4 is provided on the lower portion of the pneumatic rotating component. The fan blade structure 4 is aligned with the air inlet of the protective frame 6 in the vertical direction. When air enters the air inlet, the pneumatic rotating component rotates in response to the air flow. The fan blade structure and the pneumatic rotating component are integrally molded.

[0049] The protective frame 6, handle 9, and pneumatic rotating part 3 are all made of polylactic acid (PLA), which can be produced by 3D printing or injection molding. The overall length of the handle 9 is generally 80~150mm. Combined with the acrylic transparent baffle 1, the final weight of the entire mouth mirror is about 8.7g, which is comparable to the quality of mouth mirrors on the market.

[0050] The pneumatic rotating component 3 and the transparent baffle 1 are sealed and fixed around the periphery to form a sealed cavity. Figure 4 As shown, the pneumatic rotating part and the transparent baffle can be fixed by glue sealing (such as Figure 4 (B)); or, the pneumatic rotating component and the transparent baffle are sealed and fixed by a snap-fit ​​structure with a seal (such as Figure 4 In (A), when the snap-fit ​​structure is used for sealing and fixing, a sealing ring 18 is provided on the sealing surface between the two to further improve the sealing performance between the two.

[0051] The bottom of the pneumatic rotating component 3 is provided with an adapter hole 20 for adapting to the bearing 5 and achieving adapter with the outer wall of the central shaft 7. The pneumatic rotating component 3 is a box structure with four sides folded upwards, and together with the transparent baffle 1, it forms the above-mentioned sealed cavity.

[0052] A positioning shaft is provided at the bottom of the mirror 2, which is fixed in the positioning groove of the protection frame 6 through the positioning shaft, and an adhesive is used to further increase the fixing strength.

[0053] The assembly process and working process of the pneumatic rotary water-removing dental mouth mirror of this embodiment are further described in detail below:

[0054] The assembly of the device requires the following core connection steps to ensure that all parts work together:

[0055] 1. Construct the core rotation unit:

[0056] Precision assemble and connect the pneumatic rotating component 3 and bearing 5. The core function of bearing 5 is to provide stable, low-friction rotational support. The assembled pneumatic rotating component 3 and bearing 5 are fixedly mounted on the central shaft 7. Central shaft 7 serves as the core axis and structural support for the entire rotating mechanism, ensuring concentricity and stability of rotation.

[0057] 2. Integrated optical reflective components:

[0058] The mirror 2 (i.e., the core optical element that reflects the image inside the oral cavity) is rigidly fixed to the top of the central shaft 7. This position ensures that the mirror 2 is at the center of the rotation axis and cannot interfere with the pneumatic rotating component 3.

[0059] 3. Install transparent protection and cleaning components:

[0060] The transparent baffle 1 (which protects the mirror surface and utilizes centrifugal force for self-cleaning) is securely bonded to the surface of the pneumatic rotating component 3 through a reliable bonding process. This connection ensures that the transparent baffle 1 and the pneumatic rotating component 3 rotate synchronously at high speeds, which is key to achieving the centrifugal cleaning effect.

[0061] 4. Establish the driving gas system:

[0062] Seal the handle's airway inlet connector 11 to the straight-through valve's airway outlet 12. Seal the straight-through valve's airway inlet connector 14 to the extension hose's airway outlet 15. Connect the extension hose's airway inlet 17 to the compressed air output port of the dental chair. The straight-through valve controls the airway's flow and airflow. This connection provides a clean, controllable driving air source for the entire device.

[0063] Overall effect: Through the above connections, an integrated rotating system is constructed, which is driven by the air source of the oral comprehensive treatment chair, takes the central axis 7 as the rotation core, and includes the mirror 2 and the transparent baffle 1, and realizes its function through air path control.

[0064] When using the device, all the aforementioned components must be correctly connected as required. At this point, compressed air from the dental chair is delivered to the interior of the device via a pre-connected piping system. This airflow is precisely guided through the airway outlet 8 within the handle and directly acts on the fan structure 4, providing driving force. Driven by the continuous flow of air, the fan structure 4 drives the pneumatic rotating component 3, which is coaxially connected to it, to begin high-speed rotation.

[0065] Crucially, the transparent baffle 1 is tightly coupled to the pneumatic rotating component 3, so the transparent baffle 1 also rotates synchronously at high speed. The protective frame 6 covering the outside forms a physical barrier, effectively isolating the high-speed rotating core component from the patient's oral soft tissue. This crucially prevents oral tissue damage (such as scratches, abrasions or entanglement) caused by accidental contact or agitation of the rotating components, significantly improving operational safety. When liquids (such as cooling water, saliva or blood droplets) generated during the diagnosis and treatment process inevitably splash and adhere to the surface of the transparent baffle 1, the strong centrifugal force generated by the high-speed rotation will immediately act on these liquid contaminants. The centrifugal force overcomes the adhesion between the liquid and the mirror surface and the cohesive force of the liquid itself, and quickly throws the droplets or liquid film radially outward away from the surface of the transparent baffle 1.

[0066] This continuous centrifugal cleaning process effectively prevents liquid from accumulating, flowing, or forming a film on transparent baffle 1, thereby maximizing the high light transmittance and clarity of transparent baffle 1. Because transparent baffle 1 remains highly clean and transparent, the core optical component protected by it—mirror 2—can perform its reflective function unimpeded, providing medical staff with a stable, bright, and undistorted view of the oral cavity, ensuring precise diagnosis and treatment.

Claims

1. A pneumatic rotary water-removing dental mouth mirror, characterized in that: include: handle; A protective frame fixed to one end of the handle, the top side of the protective frame is open, and the surrounding side is provided with an air inlet; A protective cover connected to the protective frame, wherein the protective cover has a sealed cavity and a transparent structure on the side facing the protective frame; a mirror coaxially disposed in the sealed cavity and fixed to the protective frame, the mirror facing the opening and parallel to the transparent structure with a working gap between the two; The peripheral side of the protective cover faces the air inlet, and when the air flow enters the air inlet, the protective cover can rotate.

2. The pneumatic rotary water-removing dental mirror according to claim 1, characterized in that: An air channel is provided in the handle, the outlet of the air channel is connected to the air inlet, and the other end of the handle is connected to an external air source.

3. The pneumatic rotary water-removing dental mouth mirror according to claim 1, characterized in that: The protective frame is surrounded by a panel structure, and the air inlet is arranged on the panel structure; the bottom of the protective frame is a hollow structure.

4. The pneumatic rotary water-removing dental mirror according to claim 1, characterized in that: A fan blade structure facing the air inlet is provided at the lower portion of the peripheral side of the protective cover.

5. The pneumatic rotary water-removing dental mirror according to claim 4, characterized in that: The protective cover includes a pneumatic rotating component and a transparent baffle that are coaxially arranged and sealed and fixed to each other at the periphery to form the sealed cavity. The transparent baffle is located on the top side, the pneumatic rotating component is located on the bottom side, and the fan blade structure is arranged on the periphery of the outer wall of the pneumatic rotating component.

6. The pneumatic rotary water-removing dental mirror according to claim 5, characterized in that: The pneumatic rotating component and the periphery of the transparent baffle are sealed and fixed by glue; or, the pneumatic rotating component and the periphery of the transparent baffle are sealed and fixed by a snap-fit ​​structure with a seal.

7. The pneumatic rotary water-removing dental mirror according to claim 5, characterized in that: The transparent baffle is an acrylic transparent plate with a thickness of 0.3-0.8 mm; the pneumatic rotating component, the protective frame and the handle are all plastic parts.

8. The pneumatic rotary water-removing dental mirror according to claim 1, characterized in that: The bottom of the protection frame is provided with a central shaft, and the top of the central shaft is provided with a positioning groove; the protective cover is connected to the outer wall of the central shaft; and the mirror is fixed in the positioning groove through the positioning shaft.

9. The pneumatic rotary water-removing dental mirror according to claim 2, characterized in that: A stop valve for controlling the airway is fixed on the handle.

10. The pneumatic rotary water-removing dental mirror according to claim 9, characterized in that: The stop valve is a boost valve.

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