Portable dermatoscope

Abstract

The invention discloses a portable dermatoscope, and relates to the field of dermatoscope research. In order to solve the problem of imaging blurring caused by insufficient disinfection and lack of a fixing mode in the prior art, the portable skin detection device comprises an amplifier, a controller, a disinfector and a fixator, and efficient and accurate skin observation and disinfection functions are achieved through linkage cooperation of all the components. The amplifier is rotationally connected with the controller through a connecting piece, a pushing assembly and a valve plate structure are integrated in the controller, the sterilizer is arranged at the front end of the controller and is in linkage with the amplifier, and the fixers are distributed on the surfaces of the amplifier and the controller and are driven by the controller to synchronously realize negative pressure adsorption fixation. According to the portable skin detection device, integration of disinfection, fixing and observation functions is achieved through mechanical linkage, the risk of cross infection can be avoided, the imaging quality is improved through the modular design of the optical assembly, and the clinical pain points that a traditional dermatoscope is inconvenient to disinfect, unstable in fixing, complex in operation and the like are effectively solved.

Description

Technical Field

[0001] The present invention relates to the research field of dermatoscopes, and in particular to a portable dermatoscope. Background Art

[0002] With the aging of the global population and changing environmental factors, the incidence of skin cancer has been increasing year by year. According to the International Agency for Research on Cancer (IARC), the incidence of skin melanoma will double by 2040. This trend makes early screening and diagnosis of skin cancer particularly important. Traditional skin cancer screening methods, while effective, are no longer able to meet the growing demand. Therefore, the development of more efficient and accurate screening tools has become an urgent task.

[0003] The dermatoscope is the most commonly used diagnostic and examination instrument in dermatology and is also one of the instruments that comes into direct contact with patients. It can observe the structure from the stratum corneum to the superficial dermis, revealing the color and structure of skin lesions that are not visible to the naked eye, providing dermatologists with a more intuitive and accurate diagnostic basis.

[0004] After searching, the Chinese patent with patent number CN213464992U discloses a portable dermatoscope, which includes a handheld shell, a built-in image data conversion module and a data transmission module in the handheld shell, a high-magnification camera and a light source assembly are provided on one side of the handheld shell, and a data cable is also provided on the handheld shell. The image generated by the high-magnification camera is sent to the mobile terminal through the image data conversion module, the data transmission module and the data cable; this solution provides a portable dermatoscope, which observes the skin through a high-magnification camera and can send the image to the mobile terminal for display. It is very convenient to use and portable; and the lighting structure of the dermatoscope is optimized to meet people's usage needs.

[0005] The existing technology has the following problems: existing portable dermatoscopes usually have a magnifying observation function, and the disinfection process is complicated. However, dermatoscopes are used frequently and need to be disinfected after each use, which can easily lead to cross-infection. At the same time, if the disinfection process is not sufficient and the instrument cannot be kept dry, mold will form, which will have a certain impact on imaging. In addition, the existing equipment lacks a stable fixing device during operation, which may cause the equipment to shake during observation, and the patient's movement may cause blurred imaging, affecting diagnostic accuracy. Therefore, there is an urgent need for a portable dermatoscope device with both disinfection and fixing functions to improve usage safety and operational stability. Summary of the Invention

[0006] In response to the above-mentioned problems, the present invention aims to provide a portable dermatoscope, which solves the problems of inconvenient disinfection and unstable fixation in the prior art by integrating a sterilizer and a fixer.

[0007] The main idea of the technical solution adopted by the present invention is to design the disinfection and fixation functions in a linked manner to improve the safety and operational stability of the portable dermatoscope.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A portable dermatoscope comprising a magnifier, The controller is rotatably connected to the amplifier through a connector at one end close to the amplifier; The sterilizer is connected to the end of the controller close to the amplifier; Fixtures, provided on the amplifier and the controller; The controller controls the sterilizer to sterilize the fixator and also controls the fixator to be adsorbed on the patient's skin.

[0009] Further: the controller includes a housing, a valve plate and a pushing assembly; A valve plate is fixedly arranged in the shell; Push the assembly to slide within the housing and valve plate.

[0010] Further: the pushing assembly includes a piston and an ejector; The piston is slidably arranged in the housing, and the ejector is extended and retracted and the amplifier is fixed by controlling the piston to slide back and forth; The ejector is slidably arranged in the sterilizer, and the sterilizer is opened and closed by the extension and contraction of the ejector.

[0011] Furthermore: the piston and the ejector are connected via an adjusting member to achieve precise displacement of the ejector and control the amount of disinfectant used; The adjusting member includes a connecting rod and a sleeve shaft; One end of the connecting rod is rotatably connected to the piston, and sliding blocks are symmetrically arranged on the side walls of the other end. The sliding blocks slide along the spiral grooves opened in the sleeve shaft.

[0012] Through the above scheme, the spiral transmission design can not only accurately control the atomization range and spray volume of the disinfectant, but also convert ambient light energy into heat energy through the graphene film set on the surface of the disinfectant tank, accelerate the volatilization of alcohol, and achieve fast and efficient atomization disinfection effect.

[0013] Further: the disinfector includes a disinfectant tank and an energy conversion element; The disinfectant tank is sleeved on the ejector, and an energy conversion component is provided on the surface of the disinfectant tank to convert light energy into heat energy to accelerate the evaporation of alcohol.

[0014] Furthermore: the energy conversion element is a graphene film.

[0015] Furthermore: the fixer includes two symmetrically arranged air extraction pipes and a suction cup; An air extraction pipe, one end of which is connected to the inner cavity of the suction cup, and the other end of which is connected to the controller through a shell interface; The suction cup is connected to the amplifier and achieves stable fixation through negative pressure adsorption.

[0016] The beneficial effects of the present invention are: 1. The controller utilizes a transmission structure. When the operator presses the push rod, the piston moves linearly. The connecting rod drives the slider along a spiral groove within the sleeve, converting the push rod's linear motion into axial movement of the sleeve, thereby driving the precise displacement of the ejector. This spiral transmission design not only precisely controls the atomization range and spray volume of the disinfectant, but also converts ambient light energy into heat energy through the graphene film installed on the surface of the disinfectant tank, accelerating the volatilization of alcohol and achieving rapid and efficient atomization disinfection. 2. The holder features a symmetrical dual suction tube layout. The suction cup's inner cavity is connected to the valve plate and piston inside the controller via the suction tube. When the piston is pulled, it moves away from the valve plate, extracting the air between the suction cup and the skin. This creates negative pressure between the suction cup and the skin, maintaining the suction cup's adhesion. This negative pressure fixation, combined with the rotating connection between the ring on the amplifier and the connector, ensures a stable fit on curved skin surfaces while enabling multi-angle observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments.

[0018] Figure 1 This is a schematic structural diagram of a portable dermatoscope according to the present invention; Figure 2 This is a diagram of a portable dermatoscope in use according to the present invention; Figure 3 This is a schematic diagram of the structure of the amplifier and part of the fixer of the present invention; Figure 4 for Figure 3 Cross-sectional view; Figure 5 This is a schematic diagram of the shielding group structure of the present invention; Figure 6 This is a schematic diagram of the structure of the controller and the sterilizer of the present invention; Figure 7 This is a schematic diagram of the structure of the connector, controller and sterilizer of the present invention; Figure 8 for Figure 7 Cross-sectional view; Figure 9 This is a schematic diagram of the structure of the driving component of the present invention; Figure 10 Exploded view of components promoting the present invention; Figure 11This is a schematic diagram of the piston and connecting rod structure of the present invention; Figure 12 This is a schematic diagram of the sleeve shaft and ejector structure of the present invention; In the picture: 1. Magnifier: 101. Mounting tube; 102. End cap; 103. Light assembly; 104. Shield assembly; 105. First polarizing filter; 106. Objective lens; 107. Second polarizing filter; 108. Mounting ring; 109. Eyepiece; 110. Retaining ring; 2. Controller: 201. Housing; 202. Valve plate; 203. Push rod; 204. Piston; 205. Connecting rod; 206. Slider; 207. Sleeve; 208. Spiral chute; 209. Ejector; 3. Sterilizer; 301. Spiral nozzle; 302. Disinfectant tank; 303. Graphene film; 4. Fixer; 401. Vacuum tube; 402. Suction cup; 5. Ring; 6. Connector; 7. External connector; 701. Connecting wire; 702. Mounting shell. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application. Example 1

[0021] See Figures 1 to 5 The present application discloses a portable dermatoscope, including an amplifier 1, a controller 2, a sterilizer 3 and a holder 4. A ring 5 is provided on the outside of the amplifier 1, and the ring 5 is rotatably connected to a connector 6. The connector 6 is connected to the end of the controller 2 near the amplifier 1. The controller 2 controls the sterilizer 3 and the holder 4 in a linkage manner. The sterilizer 3 is arranged in the controller 2 and the connector 6, and the holder 4 is arranged on the amplifier 1 and the controller 2.

[0022] Specifically, the amplifier 1 includes a mounting assembly, a lighting group 103, a shielding group 104 and an amplifying assembly. A ring 5 is provided on the outer surface of the mounting assembly, and the ring 5 is rotatably connected to the connecting piece 6. Inside the mounting assembly, from near to far from the skin, are the lighting group 103, the shielding group 104 and the amplifying assembly.

[0023] The mounting assembly comprises a mounting tube 101 and an end cap 102. One end of the mounting tube 101 is detachably connected to the end cap 102, while the other end is connected to the suction cup 402 of the holder 4. The mounting tube 101 is cylindrical or cylindrical in shape, with an inner diameter matching the dimensions of the amplifying assembly, lighting assembly 103, and shielding assembly 104, ensuring a secure fit. The mounting tube 101 is 100-150 mm long and 1-2 mm thick. It is constructed from high-strength, lightweight materials (such as aluminum alloy or engineering plastics) to ensure structural strength while reducing the overall weight of the device. The mounting tube 101 and end cap 102 can be connected using threads or snap-fit connections, facilitating maintenance and replacement of internal components. The mounting tube 101 and suction cup 402 can be connected using threads or slots, ensuring a secure fit. The end cap 102 is circular or annular in shape, with an outer diameter matching that of the mounting tube 101 and an inner diameter slightly larger than the outer diameter of the amplifying assembly, ensuring smooth installation. The end cap 102 is a circular or annular structure, with an outer diameter matching the mounting tube 101 and an inner diameter slightly larger than the outer diameter of the amplifying component, to ensure that the amplifying component can be installed smoothly.

[0024] In addition, lighting group 103 is close to the skin side and uses 36 high color rendering index LEDs (CRI>90) arranged in a double-layer ring array with an inner diameter of 32mm / outer diameter of 48mm, ensuring that the illumination uniformity within the 50mm detection field of view reaches more than 92%. At the same time, the LED surface is covered with an optical-grade silicone diffuser (transmittance>85%). After micro-prismatic texture treatment, it can achieve: 40% increase in light softness (eliminating hard shadows), constant color temperature at 4500K±200K (simulating natural light), and a flicker index of <0.5 (in line with medical lighting standards).

[0025] In addition, the shielding group 104 is composed of multiple adjustable blades. The opening and closing of the blades control the amount of light passing through and block external dust. When the blades are closed, they form a physical barrier to prevent external ambient light from interfering with imaging and prevent dust from entering the internal magnifying components. The blade material must have low reflective properties (such as a matte coating) to reduce stray light reflections. When in use, the manual knob controls the opening and closing of the blades to adapt to different lighting environments. The shading range can be adjusted and can be completely closed to protect the optical components inside the magnifying component. It is worth noting that the magnifying assembly includes a first polarizing filter 105, an objective lens 106, a polarizing filter assembly, and an eyepiece assembly. From closest to the skin, these are the first polarizing filter 105, the objective lens 106, the polarizing filter assembly, and the eyepiece assembly. The eyepiece assembly rotates between the polarizing filter assembly and the mounting assembly. The first polarizing filter 105 is located at the very front end of the magnifying assembly, close to the object of observation (e.g., skin). It filters incident light, allowing only light with a specific polarization direction to pass through. This helps reduce interference from stray light and reflected light, improving image contrast and clarity. The objective lens 106 is the core optical component in the magnifying assembly, responsible for collecting light from the object of observation and performing preliminary magnification. The design of the objective lens determines the magnification factor and image quality. After light passes through the objective lens, a magnified real image is formed.

[0026] The polarizing filter assembly includes a second polarizing filter 107 and a mounting ring 108. The second polarizing filter 107 is mounted within the mounting ring 108, which is then mounted within the mounting barrel 101. The second polarizing filter further filters light, ensuring that only light with a specific polarization direction passes through, further enhancing image contrast. The mounting ring 108 is used to secure the second polarizing filter and precisely mount it within the mounting barrel 101, ensuring a stable optical path.

[0027] The eyepiece assembly includes an eyepiece 109 and a retaining ring 110. Eyepiece 109 is disposed within retaining ring 110, which is positioned between mounting ring 108 and mounting tube 101. The eyepiece serves to magnify the real image formed by the objective lens, converting it into a virtual image suitable for human observation. Retaining ring 110 secures the eyepiece between mounting ring 108 and mounting tube 101, ensuring alignment of the optical axis of the eyepiece with the objective lens while allowing the eyepiece assembly to rotate within a certain range to adjust the focal length and viewing angle.

[0028] The optical path of the magnifying component works as follows: Light is emitted from the observed object (such as skin) and passes through the first polarizing filter 105, where only light with a specific polarization direction passes through. After passing through the objective lens 106, the light is focused and forms a magnified real image. The real image passes through the second polarizing filter 107, which further filters out stray light and enhances contrast. Finally, the light enters the eyepiece 109, which amplifies the real image a second time to form a virtual image suitable for observation by the human eye.

[0029] Adjustment function: The eyepiece assembly can be rotated to facilitate users to adjust the focus and viewing angle according to personal needs, ensuring that the observed image is clear and comfortable.

[0030] A usage process of this embodiment is: The doctor first disinfects the skin area to be observed with alcohol. They then rotate the magnifier 1 (i.e., the collar 5 and connector 6) to ensure the device maintains portability while providing the flexible viewing angles of a professional dermatoscope. The doctor then places the observation end of the magnifier 1 (the side closest to the light assembly 103) on the skin area to be observed. After adjusting the position, the suction cup 402 is secured to the skin. The doctor then opens the end cap 102. If the image is blurry, the doctor adjusts the position of the eyepiece 109 using the fixing ring 110 to ensure that the optical axes of the eyepiece 109 and the objective lens 106 are aligned. The image is then observed. During observation, light is emitted from the skin surface and filtered by the first polarizing filter 105, allowing only light with a specific polarization direction to pass through, reducing interference from stray light and reflected light. The light then passes through the objective lens 106, forming a magnified real image. This real image is further filtered by the second polarizing filter 107 to enhance image contrast. Finally, the light enters the eyepiece 109, which magnifies the real image a second time, forming a virtual image suitable for human observation. At this time, the doctor can observe the details of the skin surface through the eyepiece 109 and obtain a high-definition, high-contrast image. Example 2

[0031] See Figures 6 to 12 Based on the first embodiment, the second embodiment provides a specific structure of a controller 2, a sterilizer 3 and a fixator 4. The controller 2 is rotatably connected to the amplifier 1 through a connector 6 at one end thereof close to the amplifier 1. The sterilizer 3 is connected to the end of the controller 2 close to the amplifier 1. The fixator 4 is arranged on the amplifier 1 and the controller 2. The controller 2 controls the sterilizer 3 to sterilize the fixator 4 and also controls the fixator 4 to be adsorbed on the patient's skin.

[0032] Specifically, the controller 2 includes a shell 201, a valve plate 202 and a pushing component. One end of the shell is connected to the external connector, and the other end is connected to the connecting piece 6. The valve plate 202 is fixedly installed in the shell, and the pushing component slides in the shell 201 and the valve plate 202.

[0033] It should be noted that, in the present application, the pushing assembly includes a push rod 203, a piston 204 and an ejector 209. The push rod 203 is connected to the piston 204, and the piston 204 is slidably arranged in the housing 201. The ejector 209 is extended and retracted and the amplifier 1 is fixed by controlling the piston 204 to slide back and forth; since the ejector 209 is slidably arranged in the sterilizer 3, the sterilizer 3 can be compressed and relaxed by the extension and retraction of the ejector 209, thereby achieving the purpose of controlling the opening and closing of the sterilizer 3.

[0034] Furthermore, the regulating member includes a connecting rod 205 and a sleeve 207. One end of the connecting rod 205 is rotatably connected to the piston 204, and sliders 206 are symmetrically arranged on the sidewall of the other end. The sliders 206 slide along a spiral groove 208 defined within the sleeve 207. The sleeve 207 is fixedly connected to the ejector 209. In other words, the push rod 203 drives the piston 204 in linear motion, which in turn drives the slider 206 along the spiral groove 208 of the sleeve 207 via the connecting rod 205. The helical motion of the slider 206 is converted into axial movement of the sleeve 207 (lead ratio 1:4), driving the ejector 209 to precisely move (resolution ±0.02mm), thereby accurately controlling the amount of disinfectant used.

[0035] The disinfector 3 includes a spiral spray head 301, a disinfectant tank 302, and an energy conversion element. One end of the spiral spray head 301 is fixed to the ejector 209, and the other end is connected to the disinfectant tank 302. The disinfectant tank 302 is sleeved on the ejector 209 and rotates within the connecting member 6. When the ejector 209 moves forward, the spiral spray head 301 is extended and the disinfectant tank 302 is squeezed, and the disinfectant in the disinfectant tank 302 is sprayed into the suction cup 402 through the spiral spray head 301.

[0036] Furthermore, an energy conversion component is provided on the side (surface) of the disinfectant tank 302 facing the amplifier 1 to convert light energy into heat energy to accelerate the evaporation of alcohol. The energy conversion component is preferably a graphene film 303. The graphene film 303 (thickness 5μm, light absorption rate > 92%) absorbs energy from an external light source (such as the built-in light group 103 of the device), and the surface temperature rises to 65℃±3℃, which increases the evaporation rate of alcohol by 3 times and forms an atomized disinfection area (diameter > 8cm).

[0037] Specifically, the fixture 4 comprises two symmetrically arranged suction tubes 401 and a suction cup 402. One end of the suction tube 401 connects to the inner cavity of the suction cup 402, while the other end, through an interface on the housing 201, is connected between the valve plate 202 and the piston 204 of the controller 2. The suction cup 402 is connected to the amplifier 1, achieving stable fixation through negative pressure adsorption. During use, the piston 204 moves to change the ventilation cross-sectional area of the valve plate 202, generating a negative pressure (maximum -80 kPa) within the suction tube 401 through the Bernoulli effect. When the piston 204 is pushed in, the air within the controller 2 is pushed through the suction tube 401 into the suction cup 402, increasing the air flow rate within the suction cup 402, expanding the alcohol surface area and further expanding the disinfection area. When the piston 204 is pulled out, the suction cup 402 is pressed against the skin, and the controller 2 draws the air between the suction cup 402 and the skin through the suction tube 401, generating negative pressure, thereby firmly fixing the suction cup 402 to the skin.

[0038] It is worth noting that the material of the suction cup 402 should be appropriately flexible and able to conform to the skin surface without causing pressure or discomfort. The surface of the suction cup 402 that contacts the skin should be flat or slightly curved to ensure a close fit and prevent air entrapment from affecting the negative pressure suction effect. To ensure that the suction cup 402 does not interfere with the imaging of the magnifier 1 after being fixed to the skin, the suction cup 402 should be made of a transparent or highly transmissive material (such as medical-grade silicone or polycarbonate) to ensure that light can pass smoothly through the suction cup 402 to the skin surface without affecting the magnifier's imaging quality. The inner surface of the suction cup 402 should be treated with a low-reflection treatment (such as an anti-reflection coating or a matte coating) to reduce light reflection on the suction cup surface and prevent stray light from interfering with the imaging. The wall thickness of the suction cup 402 should be as thin as possible (typically less than 1 mm) to reduce refraction and scattering of light during passage, ensuring image clarity. The central area of the suction cup 402 should be designed as an opening or transparent window to ensure that the skin in the observation area is fully exposed to the magnifier's optical path and is not obstructed by the suction cup 402.

[0039] Working principle of controller 2 linking disinfector 3 and fixer 4: The push rod 203 drives the piston 204 to move linearly. The piston 204 drives the slider 206 to slide along the spiral groove 208 in the sleeve shaft 207 through the connecting rod 205. The spiral motion of the slider 206 is converted into axial movement of the sleeve shaft 207, pushing the ejector 209 to perform precise displacement. When the ejector 209 moves forward, it pushes the spiral nozzle 301 to extend close to the inner cavity of the suction cup 402 while squeezing the disinfectant liquid tank 302. The disinfectant in the disinfectant liquid tank 302 is sprayed out through the spiral nozzle 301 under the action of pressure, forming an atomized disinfection area. The graphene film 303 on the disinfectant liquid tank 302 absorbs the energy of the external light source (such as the light group 103), converts the light energy into heat energy, raises the surface temperature to 65°C±3°C, accelerates the evaporation of the disinfectant (such as alcohol), and improves the disinfection efficiency.

[0040] Because the movement of piston 204 changes the ventilation cross-sectional area of valve plate 202, the Bernoulli effect generates negative pressure within suction tube 401. During disinfection, when piston 204 is pushed in, air within controller 2 is pushed into suction cup 402 through suction tube 401, increasing the air flow rate within suction cup 402 and expanding the disinfection area. During fixation, when piston 204 is pulled out, controller 2 draws air between suction cup 402 and the skin through suction tube 401, generating negative pressure and firmly securing suction cup 402 to the skin.

[0041] Furthermore, to enhance the device's portability and expand its functionality, an external connector 7 is added. This connector includes a connecting cable 701 and a mounting housing 702. Connecting cable 701 is housed within mounting housing 702, which mates with housing 201 or the viewing end of amplifier 1. During use, external connector 7 is removed from housing 201 and connected to the viewing end of amplifier 1, ensuring that connecting cable 701 communicates with the device's internal circuitry or signal interface. Connecting cable 701 can then be used to transmit electrical signals, data signals, or control signals. In other words, it transmits imaging data from amplifier 1 to an external display device (such as a computer or monitor).

[0042] A portable dermatoscope is used as follows: Pre-observation disinfection: The doctor confirms that there is sufficient disinfectant (such as alcohol) in the disinfectant reservoir and checks that the graphene film is clean and intact. Pushing the push rod 203 drives the piston 204 in linear motion. This, in turn, drives the sleeve 207 in axial motion via the connecting rod 205 and slider 206, pushing the ejector 209 forward. This pushes the spiral nozzle 301 to extend close to the inner cavity of the suction cup 402, while squeezing the disinfectant reservoir 302. Disinfectant is sprayed through the spiral nozzle 301, forming an atomized disinfection area and disinfecting the suction cup 402. At this point, the graphene film 303 absorbs the light energy from the light assembly 103, rapidly evaporating the disinfectant and further expanding the atomized disinfection area. In other words, by adjusting the push distance of the push rod 203, the spray volume and atomization range of the disinfectant can be controlled. Simultaneously, pushing the piston 204 in, the air in the controller 2 is pushed into the suction cup 402 through the exhaust pipe 401. This increases the air flow rate within the suction cup 402, increasing the alcohol surface area and further expanding the disinfection area.

[0043] Fixation during observation: The doctor first applies alcohol to the skin area that needs to be observed for disinfection, rotates the amplifier 1, that is, rotates the ring 5 and the connector 6 to make the device have a flexible observation angle, places the observation end of the amplifier 1 (the side close to the light group 103) on the skin area that needs to be observed, and after adjusting the position, sticks the suction cup 402 on the observed skin, pulls out the push rod 203, drives the piston 204 to move in the opposite direction, and changes the ventilation cross-sectional area through the valve plate 202 to generate negative pressure in the exhaust pipe 401. The negative pressure is transmitted to the suction cup 402 through the exhaust pipe 401, and the gas between the suction cup 402 and the skin is extracted, so that the suction cup 402 is firmly fixed on the skin. By controlling the pulling distance of the push rod 203, the size of the negative pressure is adjusted to ensure that the suction cup 402 is firmly fixed and does not cause discomfort to the skin.

[0044] Observe the skin: Open the end cover 102. If the image is blurred, adjust the position of the eyepiece 109 through the fixing ring 110 to ensure that the optical axis of the eyepiece 109 is aligned with that of the objective lens 106, and then observe. During observation, light is emitted from the surface of the skin. After being filtered by the first polarizing filter 105, only light with a specific polarization direction passes through, reducing interference from stray light and reflected light. After the light passes through the objective lens 106, an enlarged real image is formed. The real image is further filtered by the second polarizing filter 107 to enhance the image contrast. Finally, the light enters the eyepiece 109, which amplifies the real image for a second time to form a virtual image suitable for observation by the human eye.

[0045] If the image needs to be transmitted to a display device, remove the external connector 7 from the housing 201 and connect the external connector 7 to the observation end of the amplifier 1, ensuring that the connecting line 701 is connected to the circuit or signal interface inside the device. The connecting line 701 can then transmit the imaging data of the amplifier 1 to the external display device.

[0046] After observation: After use, gently push the push rod 203 to reduce the negative pressure and separate the suction cup 402 from the skin, wipe the suction cup 402 with alcohol, turn the amplifier 1 to make the suction cup 402 close to the graphene film 303, and then put it into the box after the above disinfection.

[0047] Specific use cases: In a busy dermatology clinic, a middle-aged patient presented with skin changes that looked like a mole. The doctor, suspecting the mole might be malignant, decided to perform a detailed examination using a portable dermatoscope.

[0048] The doctor gently pushes push rod 203 to activate disinfector 3. Disinfectant 3 is sprayed through spiral nozzle 301, disinfecting suction cup 402. After disinfection, the doctor rotates amplifier 1, places suction cup 402 in the observation position, pulls out push rod 203, and securely attaches suction cup 402 to the patient's skin using the principle of negative pressure adsorption. The doctor opens end cap 102 of amplifier 1 and adjusts the viewing clarity of amplifier 1. If the observation image needs to be transmitted to an external display device (such as a computer or monitor) for further analysis or recording, the doctor connects external connector 7. After the examination is complete, the doctor gently pushes push rod 203 in to reduce the negative pressure and separate suction cup 402 from the skin. After wiping suction cup 402 with alcohol, the doctor rotates amplifier 1 so that suction cup 402 is close to the graphene film for further disinfection.

[0049] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable dermatoscope, comprising a magnifier (1), characterized in that The controller (2) is rotatably connected to the amplifier (1) through a connector (6) at one end thereof close to the amplifier (1); A sterilizer (3) is connected to the end of the controller (2) close to the amplifier (1); A holder (4) is provided on the amplifier (1) and the controller (2); The controller (2) controls the sterilizer (3) to sterilize the fixator (4) and also controls the fixator (4) to be adsorbed on the patient's skin.

2. A portable dermatoscope according to claim 1, characterized in that: The controller (2) comprises a housing (201), a valve plate (202) and a pushing assembly; A valve plate (202) is fixedly provided in the housing (201); The push assembly slides within the housing (201) and the valve plate (202).

3. A portable dermatoscope according to claim 2, characterized in that: The pushing assembly includes a piston (204) and an ejector (209); A piston (204) is slidably disposed in the housing (201), and the ejector (209) is extended and retracted and the amplifier (1) is fixed by controlling the piston (204) to slide back and forth; The ejector (209) is slidably arranged in the sterilizer (3), and the opening and closing of the sterilizer (3) is achieved by the extension and retraction of the ejector (209).

4. A portable dermatoscope according to claim 3, characterized in that: The piston (204) and the ejector (209) are connected via an adjusting member to achieve precise displacement of the ejector (209) and control the amount of disinfectant used; The adjusting member includes a connecting rod (205) and a sleeve shaft (207); One end of the connecting rod (205) is rotatably connected to the piston (204), and the side wall of the other end is symmetrically provided with sliders (206), and the sliders (206) slide along the spiral groove (208) provided in the sleeve shaft (207).

5. The portable dermatoscope according to claim 4, characterized in that: The sterilizer (3) comprises a sterilizing liquid tank (302) and an energy conversion component; The disinfectant liquid tank (302) is sleeved on the ejector (209), and an energy conversion element is provided on the surface of the disinfectant liquid tank (302) to convert light energy into heat energy to accelerate the evaporation of alcohol.

6. The portable dermatoscope according to claim 5, characterized in that: The energy conversion component is a graphene film (303).

7. The portable dermatoscope according to claim 1, characterized in that: The fixer (4) comprises two symmetrically arranged air extraction pipes (401) and a suction cup (402); An air extraction pipe (401), one end of which is connected to the inner cavity of the suction cup (402), and the other end of which is connected to the controller (2) through an interface of the housing (201); The suction cup (402) is connected to the amplifier (1) and is stably fixed by negative pressure adsorption.

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