Double-sided anti-fog amplification mouth mirror

Abstract

The invention relates to the technical field of medical instruments, in particular to a double-sided anti-fog amplification mouth mirror which comprises a mirror body, a rotary connecting mechanism, a micro-channel cleaning system and a handle assembly. A lens main body is formed by fixing a plane mirror (A surface) and an aspheric magnifying lens (B surface) in a back-to-back manner, and a steering engine drives a central connecting rod to realize quick switching of double functions. The lens body is further provided with a heating anti-fog module, the micro-channel system is integrated in the lens frame, the annular distribution cavity is of a double-layer independent structure, the upper layer is communicated with the inclined spraying holes, normal saline is directionally sprayed for preventing fog and removing dirt, and the surface of the lens body is clear through heating of the heating anti-fog module. And the lower layer is communicated with a suction hole to recycle dirt under negative pressure. The handle is integrated with a control button, a foot switch controls washing / suction separately, and single-hand operation is achieved. The problems of view limitation, mirror surface fogging, pollution and single function are systematically solved, and the diagnosis and treatment efficiency and accuracy are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a double-sided anti-fog magnifying mouth mirror. Background Art

[0002] In oral clinical procedures, the mouth mirror, as a core instrument, undertakes the basic functions of reflecting vision and pulling soft tissue. However, traditional mouth mirrors have significant limitations in practical applications: First, water mist easily condenses on the mirror surface in low-temperature environments. Due to the temperature difference between the inside and outside of the mouth and the high humidity environment, the mirror surface frequently fogs up, forcing doctors to interrupt operations to wipe it, seriously slowing down diagnosis and treatment efficiency; second, the field of view in narrow cavities is limited. Traditional flat mirrors cannot provide magnified vision. Doctors need to get too close to the patient or rely on external magnification equipment, which increases operator fatigue and affects exploration accuracy; third, the mirror surface is difficult to thoroughly clean after blood and saliva adhere to it. Residual stains interfere with image clarity and may even cause cross-infection risks; fourth, the lack of single functionality means that in clinical practice, it is often necessary to switch between conventional reflection and magnification observation modes. However, existing mouth mirrors cannot dynamically adjust the functional surface, forcing doctors to repeatedly change instruments and disrupting operational continuity.

[0003] While some improvements have been attempted to address these issues, none have systematically addressed the multiple pain points. For example, anti-fog coatings easily wear out and fail, external magnification devices increase the instrument's bulk and interfere with operation, and simple two-sided mouth mirrors lack quick switching and self-cleaning capabilities. These piecemeal improvements, without reconstructing the underlying logic of the instruments, still force doctors to compromise between efficiency and user experience. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-sided anti-fog magnifying mouth mirror, which integrates plane reflection and magnifying double mirrors and can be quickly switched by a servo drive; the microfluidic system realizes anti-fog and self-cleaning to reduce the risk of contamination, and significantly improves the efficiency of oral diagnosis and treatment and the continuity of operation.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions: A double-sided anti-fog magnifying mouth mirror, comprising: The lens body is composed of a plane reflector on the A side and an aspheric magnifying lens on the B side fixed back to back; A rotating connection mechanism includes an outer shell and a central connecting rod, and the lens body is rotatably connected to the frame through the central connecting rod; A frame, covering the edge of the lens body, with an annular distribution cavity inside, and the frame is fixedly connected to the handle assembly through an outer shell; The microfluidic cleaning system includes: multiple injection holes on the inner side of the top of the frame, which are used to spray physiological saline onto the surface of the lens body, with the injection direction forming an angle of 25°-35° with the lens surface; multiple suction holes on the inner side of the bottom of the frame, which are used to suck out liquid and dirt; the annular distribution chamber is a double-layer independent structure, with the upper chamber connected to the injection holes and the lower chamber connected to the suction holes; The handle assembly has a built-in servo, which drives the lens body to rotate through a central connecting rod to achieve working switching between side A and side B.

[0006] Furthermore, the microchannel cleaning system includes a hydraulic pump, a saline tank, a negative pressure pump and a waste liquid tank, wherein: the injection hole is connected to the hydraulic pump and the saline tank through the upper cavity of the annular distribution cavity and the connecting pipe; the suction hole is connected to the negative pressure pump and the waste liquid tank through the lower cavity of the annular distribution cavity and the connecting pipe.

[0007] Furthermore, the working negative pressure of the suction hole is 1.0-1.4 kPa.

[0008] Furthermore, the surface equation of the B-side aspheric magnifying mirror is: Where c is the curvature, k is the cone coefficient, -0.8≤k≤-0.5, A 2i The coefficient of the higher-order term |A4|≤10 -3 .

[0009] Furthermore, it also includes a foot switch and a connector. The foot switch is provided with an independent control group to control the rotation of the servo, the start and stop of the injection hole and the start and stop of the suction hole respectively; the connector is provided with a manual control button for switching the working surface of the lens body.

[0010] Furthermore, a heating anti-fog module is also provided: a transparent metal oxide heating film (ITO / FTO, thickness ≤ 0.05mm) is embedded in the lens body, and the surface is covered with a medical-grade silica insulation layer to achieve biocompatibility and corrosion resistance. A patch-type temperature sensor monitors the mirror surface temperature in real time, and a PID control algorithm is used to maintain the mirror surface temperature at 42±1°C (always higher than the saturated steam temperature in the mouth), completely eliminating fogging caused by temperature differences. Furthermore, the heating and anti-fogging module features a hardware fuse that automatically cuts off the circuit to ensure the heating temperature is below the oral mucosal burn threshold of 45°C. A gradient temperature limit is implemented, reducing power when temperatures exceed 43°C and forcing a power outage when temperatures exceed 45°C. This eliminates fog and vapor through physical heating, avoiding secondary fogging caused by spraying.

[0011] Beneficial effects of the present invention: The present application realizes efficient mirror anti-fog function through the micro-channel cleaning system arranged in the mirror frame. The mirror surface can be uniformly sprayed with physiological saline for anti-fog and dirt cleaning through a plurality of spray holes. The spray holes are designed to maintain a proper angle with the mirror surface, so that the liquid can effectively cover and flow, reducing the mirror fogging caused by temperature difference and humidity change. Unlike the traditional anti-fog coating, the system sprays liquid dynamically, not only effectively reducing the mirror fogging frequency, but also eliminating the risk of coating wear and failure, thereby ensuring the visual clarity during long operation and improving the continuity of the surgical process.

[0012] The lens body adopts a double-sided design, one side is a plane mirror, and the other side is a non-spherical magnifying glass. Through the built-in rotating connection mechanism and rudder assembly, the physician can quickly switch the mirror function to meet different diagnosis and treatment needs. The non-spherical magnifying glass design provides a magnified field of view while having good distortion control capability. Thanks to its precise curved surface parameter adjustment, the magnified image is greatly improved in both clarity and accuracy. It effectively makes up for the deficiency of the traditional mouth mirror in providing clear and magnified view in a narrow cavity, so that the physician can quickly obtain a more detailed observation effect without the aid of external equipment.

[0013] The present application combines the spray cleaning and suction functions through the annular distribution cavity inside the mirror frame, forming a closed-loop cleaning system. The mirror surface can be cleaned by spraying physiological saline through the spray holes, combined with the suction holes at the bottom end of the mirror frame, which can effectively remove blood, saliva and other impurities attached to the mirror surface. It reduces the impact of mirror contamination on image quality and reduces the risk of cross-infection caused by mirror contamination. The self-cleaning function not only maintains the mirror surface clean, but also reduces the frequency of manual cleaning by the physician during operation, improving the overall operation efficiency and safety.

[0014] The device integrates a foot switch and a rotating control system, so that the operator can complete the function switching of the double-sided mirror and the start-stop control of the spray and suction through simple foot operation. Not only does it free the physician's hands, but it also further optimizes the operation convenience of the instrument in use. The accuracy and sensitivity of the control system are ensured, and through the positioning control algorithm of the rudder, the lens is accurately and quickly rotated, and combined with the operation button of the connector, the physician can easily realize the function control of the mirror, enhancing the smoothness and efficiency of the diagnosis and treatment operation.

[0015] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention; Figure 2 2 is a schematic diagram of the lens body of the present invention; Figure 3 is a schematic cross-sectional view of the mirror frame of the present invention; Figure 4 Schematic diagram of the microfluidic channel cleaning system of the present invention; Figure 5 This is a schematic diagram of the system process framework of the present invention; In the figure: 1. Lens body, 2. Rotating connection mechanism, 3. Frame, 4. Handle assembly, 5. Foot switch, 6. Connector, 101. Plane reflector on surface A, 102. Aspheric magnifying lens on surface B, 201. Center connecting rod, 301. Injection hole, 302. Suction hole, 303. Annular distribution chamber, 304. Connecting pipe, 401. Servo. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] Example 1 The double-sided anti-fog magnifying mouth mirror described in this embodiment includes a lens body 1, a rotary connection mechanism 2, a micro-channel cleaning system, and a handle assembly 4. The lens body 1 is composed of a plane reflector 101 on the A side and an aspheric magnifying lens 102 on the B side fixed back to back. A lens frame 3 is provided on the edge of the lens body 1, and the frame 3 is connected to the handle assembly 4 via the rotary connection mechanism 2. The rotating connection mechanism 2 includes an outer shell and a central connecting rod 201. The frame 3 is fixedly connected to the handle assembly 4 through the outer shell. The lens body 1 is rotatably connected to the frame 3 through the central connecting rod 201. The central connecting rod 201 is connected to the steering gear 401 provided in the handle assembly 4. The micro-channel cleaning system comprises a spray hole 301 for flushing the lens body 1 and a suction hole 302 for collecting waste liquid; a ring-shaped distribution cavity 303 is formed in the inside of the frame 3, and the cross section of the cavity is semicircular; the spray holes 301 are uniformly distributed on the inside of the top end of the frame 3, and the spray holes 301 are used for anti-fogging and decontamination of the lens body 1 by physiological saline flushing, and the axis of the spray holes 301 forms an angle of 30°±1° with the direction of the mirror surface; the suction holes 302 are uniformly distributed on the inside of the bottom end of the frame 3, and the suction holes 302 are used for suction of physiological saline and dirt in the mouth.

[0020] In the embodiment, the negative pressure suction hole 302 arranged at the bottom of the frame 3 has a width of 0.15±0.01mm and a depth of 0.3mm; the ring-shaped distribution cavity 303 is a double-layer independent structure, and provides liquid passages for the spray holes 301 and the suction holes 302 respectively; the spray holes 301 are communicated with the hydraulic pump and the physiological saline tank through the ring-shaped distribution cavity 303 and the communication pipe 304; and the suction holes 302 are communicated with the negative pressure pump and the waste liquid tank through the ring-shaped distribution cavity 303 and the communication pipe 304.

[0021] In the embodiment, a foot switch 5 and a connector 6 are further arranged, the connector 6 is connected with the foot switch 5 and the handle assembly 4, the foot switch 5 is provided with two or three groups of controllers for controlling the suction holes 302 and the spray holes 301 of the frame 3 and the overturning of the lens body 1, or the connector 6 is provided with a control knob for adjusting the working state of the lens body 1, and the A plane plane mirror 101 or the B plane aspheric magnifying glass 102 is selected to face upward according to the requirement of a doctor.

[0022] In the embodiment, the lens body 1 is provided with a temperature sensor and a humidity sensor, and the connector 6 is provided with a PID controller, the anti-fogging flushing is performed based on the monitoring of the temperature of the lens body 1, and the anti-fogging flushing control logic comprises: Fogging determination condition: Wherein, T mirror is the mirror surface temperature, T env is the ambient temperature, and RH is the relative humidity.

[0023] In the embodiment, the working pressure of the suction hole is limited based on the anti-clogging: Critical negative pressure calculation: Actual working negative pressure: 1.2±0.2kPa (safety factor 1.6).

[0024] In the embodiment, the rudder positioning control algorithm comprises: S1: receiving a switching instruction (A / B plane): S2: reading the current angle θ0 (encoder feedback) S3: calculating the target angle θ t (0° or 180°) S4: performing PID control: u(t) = K p e(t) + Ki ∫e(τ)dτ + K p de(t) / dt (e(t) = θ t - θ(t), K p = 0.8, Ki = 0.2, K p = 0.1) S5: Lock after reaching (static holding torque ≥ 0.3 N·m) The rudder inertia is: The minimum response time of the rudder is: Embodiment 2 The double-sided anti-fog magnifying mirror described in this embodiment comprises: The B-side aspherical magnifying mirror surface equation is: Where c is the curvature, k is the conic coefficient (-0.8 ≤ k ≤ -0.5), A 2i is the high-order coefficient (|A4| ≤ 10 -3 ) Magnification: Distortion control: relative distortion , H' is the actual image height, H0 is the ideal image height.

[0025] In this embodiment, the double-sided anti-fog magnifying mirror is a disposable medical consumable, the lens body is rotatably connected to the frame through a connecting shaft, and is provided with a double-gear clamping groove, so that the lens body can be stably oriented upward based on the required A surface or B surface, the frame is a solid structure without suction holes and injection holes; the handle assembly is not provided with a rudder; the lens surface body is provided with a hydrophobic and anti-fouling coating to isolate fog and dirt.

[0026] The contact angle model of the hydrophobic and anti-fouling coating is: Where θ > 150°, γ is the solid / liquid / gas interfacial tension; the coating is a fluorosilane nanoparticle composite coating with a thickness of 200 ± 50 nm.

[0027] In summary, the application provides a double-sided anti-fog magnifying mirror, which comprises a lens body, a rotary connecting mechanism, a micro-channel cleaning system and a handle assembly. The lens body is composed of a plane mirror (A surface) and a non-spherical magnifying mirror (B surface) fixed back to back, and the double functions are quickly switched through the rudder drive center connecting rod. The micro-channel system is integrated in the frame, and the annular distribution cavity is a double-layer independent structure: the upper layer is connected to the inclined injection hole, and the physiological saline is sprayed and defogged in a directional manner; the lower layer is connected to the suction hole, and the dirt is recovered by negative pressure. The handle integrates the control button, and the foot switch controls the flushing / suction separately, realizing single-handed operation. The problems of limited field of view, fogging, pollution and single function are solved systematically, and the diagnosis and treatment efficiency and accuracy are significantly improved.

[0028] The preferred embodiments disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the specification. The specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and use the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A double-sided anti-fog magnifying mouth mirror, characterized in that: include: The lens body (1) is composed of a plane reflector (101) on the A side and an aspheric magnifying mirror (102) on the B side fixed back to back; A rotary connection mechanism (2) comprises an outer shell and a central connecting rod (201), wherein the lens body (1) is rotatably connected to the lens frame (3) via the central connecting rod (201); A mirror frame (3) is wrapped around the edge of the lens body (1), and an annular distribution cavity (303) is provided inside the mirror frame (3), and the mirror frame (3) is fixedly connected to the handle assembly (4) via an outer shell; A microchannel cleaning system comprises: a plurality of spray holes (301) provided on the inner side of the top end of a lens frame (3), for spraying physiological saline onto the surface of a lens body (1), with the spray direction forming an angle of 25°-35° with the direction of the lens surface; a plurality of suction holes (302) provided on the inner side of the bottom end of the lens frame (3), for sucking liquid and dirt; the annular distribution cavity (303) is a double-layer independent structure, with the upper cavity communicating with the spray holes (301) and the lower cavity communicating with the suction holes (302); The handle assembly (4) has a built-in steering engine (401), and the steering engine (401) drives the lens body (1) to rotate via a central connecting rod (201), thereby realizing the operation switching of the A surface or the B surface.

2. The double-sided anti-fog magnifying mouth mirror according to claim 1, characterized in that: The microchannel cleaning system comprises a hydraulic pump, a physiological saline tank, a negative pressure pump and a waste liquid tank, wherein: the injection hole (301) is connected to the hydraulic pump and the physiological saline tank via the upper cavity of the annular distribution cavity (303) and the connecting pipe (304); the suction hole (302) is connected to the negative pressure pump and the waste liquid tank via the lower cavity of the annular distribution cavity (303) and the connecting pipe (304).

3. The double-sided anti-fog magnifying mouth mirror according to claim 1, characterized in that: The working negative pressure of the suction hole (302) is 1.0-1.4 kPa.

4. The double-sided anti-fog magnifying mouth mirror according to claim 1, characterized in that: The surface equation of the B-surface aspheric magnifying mirror (102) is: Where c is the curvature, k is the cone coefficient, -0.8≤k≤-0.5, A 2i The coefficient of the higher-order term |A4|≤10 -3 .

5. The double-sided anti-fog magnifying mouth mirror according to claim 1, characterized in that: The lens body (1) is provided with a temperature sensor and a humidity sensor and a heating anti-fog module, and the connector (6) is provided with a PID controller, which performs anti-fog flushing based on the monitoring of the temperature of the lens body (1). The anti-fog flushing control logic includes: Fogging determination conditions: Where T mirror is the mirror temperature, T env Ambient temperature, RH relative humidity.

6. The double-sided anti-fog magnifying mouth mirror according to claim 5, characterized in that: The heating and anti-fog module includes: a transparent metal oxide heating film embedded in the lens body, and a medical-grade silica insulation layer covered on the surface to achieve biocompatibility and corrosion resistance; a patch-type temperature sensor monitors the mirror surface temperature in real time, and a PID control algorithm is used to maintain the mirror surface temperature at 42±1°C, eliminating fogging caused by temperature differences.

7. The double-sided anti-fog magnifying mouth mirror according to claim 6, characterized in that: The heating and anti-fog module is equipped with a hardware fuse to automatically cut off the circuit to ensure that the heating temperature is lower than the oral mucosa burn threshold of 45°C. A gradient temperature limit is implemented to reduce power when the temperature is >43°C and force power off when the temperature is >45°C.

8. The double-sided anti-fog magnifying mouth mirror according to claim 1, characterized in that: It also includes a foot switch (5) and a connector (6), wherein the foot switch (5) is provided with an independent control group for controlling the rotation of the servo (401), the start and stop of the injection hole (301), and the start and stop of the suction hole (302); and the connector (6) is provided with a manual control button for switching the working surface of the lens body (1).

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