Medical eyewear with improved anti-fog performance using a polymeric material

Abstract

The present application relates to the technical field of medical equipment, and especially discloses a medical goggle with improved anti-fog performance by using polymer materials, which comprises an integrated frame capable of being attached to the face of a wearer and a soft sealing ring detachably fixed on the rear end ring surface of the integrated frame; after being worn, the soft sealing ring makes the integrated frame tightly sealed with the face of the wearer; the medical goggle further comprises an arc mirror lens sealingly installed at the front end of the integrated frame and goggle legs connected to the two sides of the integrated frame; the arc mirror lens is also integrated and has a middle part protruding outward; a nano coating is coated on the inner surface of the arc mirror lens; the nano coating has a hydrophilic surface to reduce the formation of fog and can be excited to kill bacteria under the irradiation of a UV-C LED lamp; the medical goggle not only has excellent anti-fog and sterilization performance, but also has a structure and materials that are carefully designed and selected, thereby ensuring its high efficiency and reliability in practical application and providing higher-level eye protection for medical staff.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to a medical goggle with improved anti-fog performance by using polymer materials. BACKGROUND

[0002] In the medical field, medical goggles are important protective equipment for protecting the eyes of medical staff from liquid splashes, harmful particles and bacteria. However, in actual application, the inside of the goggles often fogs due to temperature difference, humidity and other factors, affecting the vision and work efficiency of medical staff.

[0003] Traditional medical goggles often use simple materials and structures, which can easily cause fog to condense on the lens, and do not have sterilization function, which can easily become a breeding ground for bacteria and viruses. In addition, when wearing general goggles, the face of the wearer cannot be completely sealed, which can easily lead to the invasion of harmful substances.

[0004] Therefore, how to design a medical goggle that can not only prevent fog condensation and has good sterilization function, but also completely seals the face of the wearer, has become an urgent problem in the industry. SUMMARY

[0005] The purpose of the present application is to provide a medical goggle with improved anti-fog performance by using polymer materials to solve the problems raised in the background art. The medical goggle not only has excellent anti-fog and sterilization performance, but also its structure and materials are carefully designed and selected to ensure its efficiency and reliability in actual application, providing higher level eye protection for medical staff.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] A medical goggle with improved anti-fog performance by using polymer materials, comprising an integrated frame that can be attached to the face of the wearer, and a soft sealing ring that can be detachably fixed on the rear end ring surface of the integrated frame; after wearing, the soft sealing ring makes the integrated frame and the face of the wearer fit and seal; the medical goggle further comprises an arc lens that is sealingly installed at the front end of the integrated frame, and a pair of legs that are connected to the two sides of the integrated frame; the arc lens is also integrated and the middle part is outwardly convex; the inner surface of the arc lens is coated with a nano coating; the nano coating has a hydrophilic surface to reduce fog formation, and can excite sterilization under the irradiation of a UV-C LED lamp.

[0008] The formula of the nano coating is: titanium dioxide nanoparticles: 5-10wt%, silane coupling agent: 1-2wt%, anti-scratch agent: 1-2wt%, solvent: 80-90wt%, dispersing agent: 0.5-1wt%.

[0009] The silane coupling agent is 3-methyl silane; the anti-scratch agent is nano-silicon sheet or zirconium oxide; the solvent is isopropyl alcohol; the dispersing agent is polyvinyl acetate, polymethacrylate or sodium polycarboxylic acid.

[0010] The preparation process of the nano coating includes:

[0011] Pre-treatment: Pre-mix titanium dioxide nanoparticles and dispersing agent in a container;

[0012] Preparation of coating: Slowly add solvent to the pre-mixture and stir well to obtain a uniform mixture; add silane coupling agent and anti-scratch agent to the mixture and continue stirring until well mixed;

[0013] Coating: Use methods such as spraying, scraping or spin coating to apply the coating to the lens, ensuring uniform coating, no bubbles and no cracks;

[0014] Curing: Let the coated lens dry at room temperature for 24 hours, or bake in an oven at 60-80°C for 2-4 hours to ensure good adhesion between the coating and the lens;

[0015] Post-treatment: Check the uniformity and adhesion of the coating to ensure that the coating does not fall off or crack;

[0016] Testing: Test the coated lens for transparency, scratch resistance and antibacterial properties to ensure that it meets the application requirements.

[0017] The one-piece frame has an air outlet body along the outer edge of the curved mirror lens; the air outlet body extends along the outer edge of the curved mirror lens and is connected at the ends to form a closed loop; the air outlet body includes a closed loop uniform air chamber extending along the outer edge of the curved mirror lens; the closed loop uniform air chamber includes a drum cavity at the rear and a narrow air outlet opening towards the front of the curved mirror lens; a shunt air guide body is arranged in the closed loop uniform air chamber along the closed loop direction; the shunt air guide body separates the closed loop uniform air chamber into a closed loop outer air outlet channel and a closed loop inner air outlet channel; the closed loop outer air outlet channel has a closed loop outer air outlet slit at the front end; the closed loop inner air outlet channel has a closed loop inner air outlet slit at the front end; the closed loop inner air outlet slit and the edge of the curved mirror lens are provided with an outwardly convex air guide connecting arc surface; the air guide connecting arc surface is smoothly connected with the inner wall of the front end of the closed loop uniform air chamber and the edge of the curved mirror lens, respectively; the one-piece frame is further provided with at least one micro air pump; the air outlet of the micro air pump is in communication with the drum cavity of the closed loop uniform air chamber.

[0018] The closed loop air outlet channel is provided with a diameter reducing part in the middle to form an air flow acceleration zone; an air guide body is arranged along the air outlet body and also forms a closed loop in the integrated frame; the front end of the air guide body is narrow and communicates with the air flow acceleration zone, and the direction of the front end of the air guide body is the same as or similar to the direction of the air flow in the air flow acceleration zone; the rear end of the air guide body is flared and communicates with the space between the arc lens and the wearer's glasses; the integrated frame is also provided with an air inlet; the air inlet is covered with a melt-blown cloth for filtering bacteria.

[0019] The horizontal cross section of the air guide body is a Tesla tube structure, so that the air flow can flow unidirectionally to the narrow end thereof.

[0020] The mirror leg comprises an adjustable leg connected with the integrated frame and a foldable leg connected with the adjustable leg; the adjustable leg comprises a plurality of segmented bodies connected in sequence through a dumbbell body; a cross-shaped slot is formed in the end of each segmented body; the width of the outer opening of the cross-shaped slot is smaller than the width of the slot; the dumbbell body comprises a connecting short rod and a diameter expanding head fixed at both ends of the connecting short rod; the diameter of the diameter expanding head is larger than the width of the outer opening of the cross-shaped slot and smaller than the width of the slot; the diameter of the connecting short rod is smaller than the width of the outer opening of the cross-shaped slot.

[0021] The UV-C LED lamp is embedded in the inner side of the foldable leg, and the UV-C LED lamp faces the arc lens after the foldable leg is bent inward.

[0022] The working method of the medical goggles comprises the following steps:

[0023] The wearer adjusts the relative attitude of the adjacent segmented bodies to adjust the left-right width and the up-down position of the entire mirror leg to adapt to the head size of the wearer; in this process, the adjustment is realized by the position of the dumbbell body in the cross-shaped slot; after wearing, the foldable leg can be bent inward to wrap the back part, thereby improving the wearing stability of the goggles.

[0024] ② After putting on the goggles, start the miniature air pump via the switch. The miniature air pump pressurizes external air into the drum cavity of the closed-loop uniform air chamber. The pressurized air is then diverted by the air diverter. A portion of the airflow passes through the air outlet duct within the closed loop and is ejected from the narrow air outlet slit. Due to the convex curved surface of the air guide and the curved lens, this portion of the airflow adheres to the surface of the air guide and the curved lens under the Coanda effect. As the airflow passes through the air outlet duct within the closed loop, it passes through the airflow acceleration zone. According to Bernoulli's principle, the pressure at this point decreases, creating a negative pressure. This causes the air within the goggles' coverage area to be drawn into the airflow acceleration zone and carried out. The air within the goggles' coverage area is heated by the body's heat conduction and radiation, resulting in a higher temperature. As the airflow adheres to and flows over the curved lens surface, it heats the outer surface of the lens, bringing the inner and outer surface temperatures closer together. This prevents external moisture from condensing on the outer surface of the curved lens and reduces the adhesion of bacteria and viruses. At the same time, it removes moisture generated within the goggles' coverage area, preventing excessive humidity around the wearer's eyes. After the air within the goggles' coverage area is removed, there is a certain negative pressure inside. External air is filtered for bacteria by the meltblown fabric at the air inlet before entering the goggles' coverage area, ensuring fresh air within the coverage area.

[0025] ③ The pressurized air is diverted by the air diverter, and another part of the airflow is ejected from the closed-loop outlet air duct through the closed-loop outlet air slit. Since the closed-loop outlet air duct and the closed-loop outlet air slit are also set in a closed loop around the curved mirror, an air ring around the curved mirror is formed and sprayed in front of the curved mirror; and the space within the area surrounded by the air ring is formed with negative pressure; and the airflow that gathers in front of the curved mirror is carried forward.

[0026] ④ When not in use, remove the goggles, bend the foldable legs inward so that the inside of the foldable legs faces the curved lens, and turn on the UV-C LED light on them to irradiate the curved lens with UV-C light to kill any bacteria and viruses that may be attached to the curved lens.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] Enhanced sealing: The goggles feature a specially designed soft sealing ring that fits snugly against the wearer's face, ensuring that external liquids and particles cannot easily penetrate, providing better protection for the wearer.

[0029] Significant anti-fog performance: The nano-coating on the inner surface of the curved lens is hydrophilic, which greatly reduces the fogging of the lens during use, ensuring that medical staff can maintain a clear field of vision even in complex environments.

[0030] Highly effective sterilization function: The nano-coating can produce a sterilization effect under the irradiation of UV-C LED lamp, effectively killing microorganisms on the lens surface and providing dual protection for medical staff.

[0031] Scientific formula design: The coating formula takes into account the proportion and function of each component, including silane coupling agents to improve adhesion, anti-scratch agents to enhance scratch resistance, and dispersants to ensure uniformity of the coating, ensuring the efficiency and durability of the coating.

[0032] Strict preparation process: The preparation process of the coating is carefully designed, including pretreatment, coating, curing, post-treatment and testing, to ensure the quality and performance stability of the coating.

[0033] Enhanced anti-fog, anti-bacterial and anti-dust effect of goggles: The medical goggles use an air outlet design to create a negative pressure area, helping to remove moisture around the eyes, effectively preventing fog from condensing on the lens; In addition, using the Coanda effect, part of the airflow is attracted out of the scope of the goggles by the Bernoulli principle and adheres to the arc lens, forming a wind film on the outer surface of the arc lens, which not only maintains a certain temperature on the outer surface of the lens using the heat generated by the human body, reducing the condensation of external moisture on the lens, but also effectively isolates external bacteria and viruses, reducing the attachment of bacteria, viruses and dust, so that the goggles remain clean during long-term use; At the same time, the air induction design of the Tesla tube structure can effectively control the direction of airflow, making it flow only in one direction, further optimizing the airflow state inside the goggles and avoiding the backflow of external unclean air.

[0034] Maintain fresh air: The air inside the goggles is constantly replaced by fresh air from the outside, ensuring the comfort of the wearer and reducing the chances of bacterial and viral attachment.

[0035] Effectively filter bacteria: By covering the air inlet with a melt-blown cloth, it ensures that the air entering the interior of the goggles is fresh and free of bacteria after filtration.

[0036] High comfort level: With adjustable temples, users can adjust the position of the goggles according to their head shape, ensuring stable and comfortable wear; The cross-shaped sink structure with dumbbell body not only has two-dimensional adjustment capability, but also can achieve a certain degree of deflection, further improving the flexibility of adjustment, while this structure can easily realize one adjustment to horizontal slot and the other adjustment to vertical slot when more than two cross-shaped sinks are adjusted together, thereby being limited by the dislocation between them, ensuring the stability of the adjusted posture.

[0037] Easy to clean and disinfect: when the goggles are not in use temporarily, the legs can be easily folded and the internal UV-C LED lamp can be used to disinfect the lenses, ensuring their sterile state; the UV-C LED lamp on the inner side of the legs can effectively kill bacteria and viruses attached to the arc lenses when irradiating them, providing a safer eye protection environment for users.

[0038] In summary, this medical goggles not only has excellent anti-fog and sterilization performance, but also its structure and materials are carefully designed and selected, ensuring its high efficiency and reliability in practical application, providing higher level of eye protection for medical staff; At the same time, it can also be adjusted according to individual differences, greatly enhancing its practicability and comfort, which is an ideal choice for on-site medical staff. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a structure schematic diagram of the medical goggles in normal state of the application;

[0040] Figure 2 is a structure schematic diagram of the medical goggles in disinfection state of the application;

[0041] Figure 3 is a structure schematic diagram of the medical goggles in horizontal section of the application;

[0042] Figure 4 is Figure 3 is an enlarged view of circle A;

[0043] Figure 5 is Figure 3 is an enlarged view of circle B;

[0044] Figure 6 is a structure schematic diagram of the end of the segmented body.

[0045] In the drawings, the components represented by each reference numeral are listed as follows:

[0046] In the drawings: 1, integral frame; 11, melt-blown cloth; 2, arc lens; 3, leg; 31, adjustable leg; 32, foldable leg; 33, dumbbell body; 331, connecting short rod; 332, expanded head; 34, segmented body; 341, cross-shaped slot; 4, air outlet body; 41, closed loop uniform air cavity; 411, drum cavity; 412, narrow air outlet; 413, closed loop outer air outlet; 414, closed loop inner air outlet; 415, airflow acceleration zone; 42, shunt air guide body; 43, air guide connection arc surface; 5, air induction body; 6, micro air pump; 7, UV-C LED lamp. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0048] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Several embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0049] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0051] The present application provides a technical solution:

[0052] Referring to Figures 1 to 6 A medical goggle with improved anti-fog performance by using polymer material, comprising an integrated frame 1 which can be attached to the face of the wearer, and a soft sealing ring which can be detachably fixed on the rear end ring surface of the integrated frame 1; after wearing, the soft sealing ring makes the integrated frame 1 seal with the face of the wearer; the medical goggle further comprises an arc lens 2 which is sealingly installed at the front end of the integrated frame 1, and a lens leg 3 which is connected to both sides of the integrated frame 1; the arc lens 2 is also integrated and the middle part protrudes outward; the inner surface of the arc lens 2 is coated with a nano coating; the nano coating has a hydrophilic surface to reduce fog formation, and can excite sterilization under the irradiation of a UV-C LED lamp.

[0053] Further, the formula of the nano coating is: titanium dioxide nanoparticles: 5-10wt%, silane coupling agent: 1-2wt%, anti-scratch agent: 1-2wt%, solvent: 80-90wt%, dispersing agent: 0.5-1wt%.

[0054] Titanium dioxide (TiO2) nanoparticles: The main component of photocatalytic activity. TiO2 can produce reactive oxidants under UV-C irradiation, effectively killing bacteria.

[0055] Silane coupling agent: Used to improve the adhesion between the coating and the substrate (lens).

[0056] Scratch-resistant agent: Can enhance the hardness of the coating, making it more resistant to scratches.

[0057] Solvent: Used to adjust the consistency of the coating for application.

[0058] Dispersion agent: Ensures that the nanoparticles in the coating are uniformly dispersed, avoiding particle agglomeration.

[0059] To ensure that the coating does not affect the transparency of the lens, both the thickness of the coating and the dispersion of the nanoparticles need to be strictly controlled. After the coating is prepared, a certain curing or heat treatment process is also needed to ensure the adhesion between the coating and the lens.

[0060] Further, the silane coupling agent is 3-methylsilane; the scratch-resistant agent is nano-silicon sheet or zirconium oxide; the solvent is isopropyl alcohol; and the dispersion agent is polyvinyl acetate, polymethacrylate, or sodium polycarboxylic acid.

[0061] Further, the preparation process of the nano-coating includes:

[0062] Pre-treatment: Pre-mix titanium dioxide nanoparticles and dispersion agent in a container;

[0063] Prepare the coating: Slowly add the solvent to the pre-mixture and stir thoroughly to obtain a uniform mixture; add the silane coupling agent and scratch-resistant agent to the mixture and continue stirring until the mixture is evenly mixed;

[0064] Coating: Use methods such as spraying, squeegeeing, or spin coating to apply the coating to the lens, ensuring that the coating is uniform, bubble-free, and crack-free;

[0065] Curing: Allow the coated lens to dry at room temperature for 24 hours, or bake in an oven at 60-80°C for 2-4 hours to ensure good adhesion between the coating and the lens;

[0066] Post-treatment: Check the uniformity and adhesion of the coating to ensure that the coating does not fall off or develop cracks;

[0067] Testing: Test the coated lens for transparency, scratch resistance, and antibacterial properties to ensure that it meets the application requirements.

[0068]

[0069] All tests were conducted at constant temperature (25°C) and humidity (50% RH).

[0070] The anti-fog performance test is to form a layer of water mist on the goggles and measure the dissipation time.

[0071] Each group of samples is tested in triplicate and the average value is taken.

[0072] As can be seen from the data table, when using nano-silicon sheets as anti-scratch agents, formulations 1 and 3 have the best anti-fog performance, with water mist dissipation times of 5 seconds and 4.5 seconds. Formulations 2 and 4 using zirconium oxide as an anti-scratch agent have slightly longer water mist dissipation times of 6 seconds and 7 seconds, respectively.

[0073] At the same time, control products A* and B* are mainstream anti-fog agents purchased on the market, and the water mist dissipation times of control products A* and B* are both 10 seconds and 11 seconds, which are significantly longer than the formulations of the present scheme, thereby verifying the superiority of the present scheme.

[0074] Further, on the integral frame 1, a wind outlet body 4 is arranged along the outer circle of the arc lens 2; the wind outlet body 4 extends along the outer circle of the arc lens 2 and is connected at the head and tail to form a closed loop; the wind outlet body 4 includes a closed loop uniform wind cavity 41 extending along the outer circle of the arc lens 2; the closed loop uniform wind cavity 41 includes a drum cavity 411 located at the rear and a narrow wind outlet 412 facing the front of the arc lens 2; a shunt air guide body 42 is arranged in the closed loop direction of the closed loop uniform wind cavity 41; the shunt air guide body 42 separates the closed loop uniform wind cavity 41 into a closed loop outer air outlet 413 and a closed loop inner air outlet 414; the front end of the closed loop outer air outlet 413 is a closed loop outer air outlet slit; the front end of the closed loop inner air outlet 414 is a closed loop inner air outlet slit; the closed loop inner air outlet slit and the edge of the arc lens 2 are provided with an outwardly convex air guide connecting arc surface 43; the air guide connecting arc surface 43 is smoothly connected with the inner circle wall at the front end of the closed loop uniform wind cavity 41 and the edge of the arc lens 2, respectively; at least one micro air pump 6 is further arranged on the integral frame 1; the air outlet of the micro air pump 6 communicates with the drum cavity 411 of the closed loop uniform wind cavity 41.

[0075] Further, a diameter-reducing portion is arranged in the middle of the closed loop inner air outlet 414 to form an airflow acceleration zone 415; a gas guide body 5 arranged along the wind outlet body 4 and also forming a closed loop is arranged in the integral frame 1; the front end of the gas guide body 5 is a narrow end and communicates with the airflow acceleration zone 415, and the front end of the gas guide body 5 is oriented in the same or similar direction as the airflow direction of the airflow acceleration zone 415; the rear end of the gas guide body 5 is an expanded end and communicates with the space between the arc lens 2 and the wearer's glasses; an air inlet is further provided on the integral frame 1; a melt-blown cloth 11 for filtering bacteria is covered on the air inlet.

[0076] Further, the horizontal cross section of the gas guide body 5 is a Tesla tube structure, so that the airflow can flow unidirectionally to the narrow end thereof.

[0077] Further, the glasses leg 3 comprises an adjustable leg 31 connected with the one-piece glasses frame 1 and a foldable leg 32 connected with the adjustable leg 31; the adjustable leg 31 comprises a plurality of segmented bodies 34 connected in sequence through a dumbbell body 33; the end of the segmented body 34 is provided with a cross-shaped slot 341 opening inward; the width of the opening at the outer end of the cross-shaped slot 341 is smaller than the width of the slot; the dumbbell body 33 comprises a connecting short rod 331 and a diameter expansion head 332 fixed at both ends of the connecting short rod 331; the diameter of the diameter expansion head 332 is larger than the width of the opening at the outer end of the cross-shaped slot 341 and smaller than the width of the slot; the diameter of the connecting short rod 331 is smaller than the width of the opening at the outer end of the cross-shaped slot 341.

[0078] Further, the inside of the foldable leg 32 is embedded with a UV-C LED lamp 7, which faces the arc lens 2 after the foldable leg 32 is bent inward.

[0079] Further, the working method of the medical goggles comprises the following steps:

[0080] ①The wearer adjusts the relative attitude of the adjacent segmented bodies 34 to adjust the left-right width and the up-down position of the whole glasses leg 3 to adapt to the head shape of the wearer; in this process, the adjustment is realized by the position adjustment of the dumbbell body 33 in the cross-shaped slot 341; after wearing, the foldable leg 32 can be bent inward to wrap the back part of the wearer, thereby improving the wearing stability of the goggles;

[0081] ②After wearing, the micro air pump 6 is started by the switch control, the micro air pump 6 pumps the external air into the drum cavity 411 of the closed loop uniform air cavity 41, the pressurized air is divided by the shunt air guide body 42, a part of the airflow is sprayed from the closed loop inner air outlet fine gap through the closed loop inner air outlet channel 414, due to the convex arc surface of the air guide connection arc surface 43 and the arc lens 2, under the action of the Coanda effect, this part of the airflow adheres to the surface of the air guide connection arc surface 43 and the arc lens 2; in the process of airflow through the closed loop inner air outlet channel 414, the airflow passes through the airflow acceleration area 415, according to Bernoulli's principle, the pressure at this point is reduced, forming a negative pressure, so that the air in the covered range of the goggles is sucked into the airflow acceleration area 415 by the air induction body 5, because the air in the covered range of the goggles is heated by the human body heat conduction and radiation heat, the temperature is relatively high, so that the outer surface of the arc lens 2 is heated during the process of the airflow adhering to the surface of the arc lens 2, so that the inner and outer surface temperatures are close, avoiding the condensation of external water vapor on the outer surface of the arc lens 2, and reducing the adhesion of bacteria and viruses on the outer surface of the arc lens 2, at the same time, the generated water vapor in the covered range of the goggles is taken out, avoiding the excessive humidity around the wearer's eyes; after the air in the covered range of the goggles is taken out, there is a certain negative pressure inside, the external air is supplemented into the covered range of the goggles after being filtered by the melt-blown cloth 11 on the air inlet, so as to ensure the freshness of the air in the covered range;

[0082] ③The other part of the air flow that is divided by the air dividing body 42 passes through the closed loop air outlet channel 413 and is sprayed out from the closed loop air outlet slit. Since the closed loop air outlet channel 413 and the closed loop air outlet slit are also arranged in a closed loop around the aspherical lens 2, a wind ring that sprays towards the front of the aspherical lens 2 is formed around the aspherical lens 2, and the space in the wind ring is formed into a negative pressure, and the air flow gathered in front of the aspherical lens 2 is taken away forward.

[0083] ④When not in use, the goggles are removed, the foldable legs 32 are bent inward, the inner side of the foldable legs 32 faces the aspherical lens 2, and the UV-C LED lamp 7 on the foldable legs 32 is started to irradiate UV-C light to the aspherical lens 2 to kill the bacteria and viruses that may be attached to the aspherical lens 2.

[0084] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A type of medical goggles that utilizes polymer materials to improve anti-fog performance, characterized in that: The medical goggles include an integrated frame (1) that conforms to the wearer's face and a soft sealing ring that is detachably fixed to the rear end ring of the integrated frame (1); when worn, the soft sealing ring makes the integrated frame (1) fit and seal against the wearer's face; the medical goggles also include a curved lens (2) sealed and installed at the front end of the integrated frame (1) and temples (3) connected to both sides of the integrated frame (1); the curved lens (2) is also integrated and protrudes outward in the middle; the inner surface of the curved lens (2) is coated with a nano-coating; the nano-coating has a hydrophilic surface to reduce fogging and can be activated for sterilization under UV-C LED light irradiation; An air outlet (4) is provided on the integrated frame (1) along the outer ring of the curved lens (2); the air outlet (4) extends along the outer ring of the curved lens (2) and connects end to end to form a closed loop; the air outlet (4) includes a closed-loop uniform air chamber (41) extending along the outer ring of the curved lens (2); the closed-loop uniform air chamber (41) includes a drum cavity (411) located at the rear and a narrow air outlet (412) facing the front of the curved lens (2); a diversion air guide (42) is provided inside the closed-loop uniform air chamber (41) along its closed-loop direction; the diversion air guide (42) divides the closed-loop uniform air chamber (41) into a closed-loop outer ring. The air outlet duct (413) and the closed-loop inner air outlet duct (414) are provided with a closed-loop outer air slit at the front end of the closed-loop outer air duct (413); the air outlet duct (414) is a closed-loop inner air outlet slit at the front end of the closed-loop inner air outlet duct (414); a convex air guide connecting arc surface (43) is provided between the closed-loop inner air outlet slit and the edge of the curved lens (2); the air guide connecting arc surface (43) is smoothly connected to the inner ring wall at the front end of the closed-loop uniform air cavity (41) and the edge of the curved lens (2); at least one micro air pump (6) is also provided on the integrated frame (1); the air outlet of the micro air pump (6) is connected to the drum cavity (411) of the closed-loop uniform air cavity (41).

2. The medical goggles with improved anti-fog performance using polymer materials as described in claim 1, characterized in that, The formulation of the nano-coating is as follows: titanium dioxide nanoparticles: 5-10 wt%, silane coupling agent: 1-2 wt%, anti-scratch agent: 1-2 wt%, solvent: 80-90 wt%, dispersant: 0.5-1 wt%.

3. The medical goggles with improved anti-fog performance using polymer materials as described in claim 2, characterized in that: The silane coupling agent is 3-methylsilane; the anti-scratch agent is nano-silicon wafer or zirconium oxide; the solvent is isopropanol; and the dispersant is polyvinyl acetate, polymethacrylate, or sodium polycarboxylic acid.

4. The medical goggles with improved anti-fog performance using polymer materials as described in claim 3, characterized in that: The preparation process of the nano-coating includes: Pretreatment: Premix titanium dioxide nanoparticles and dispersant in a container; Preparation of coating: Slowly add solvent to premix and stir thoroughly to obtain a homogeneous mixture; add silane coupling agent and anti-scratch agent to the mixture and continue stirring until homogeneous; Coating: Apply the coating to the lens using methods such as spraying, scraping, or spin coating, ensuring a uniform coating without bubbles or cracks; Curing: Allow the coated lens to dry at room temperature for 24 hours, or bake in an oven at 60-80°C for 2-4 hours to ensure good adhesion between the coating and the lens; Post-treatment: Check the uniformity and adhesion of the coating to ensure that there is no peeling or cracking. Testing: The coated lens is tested for transparency, scratch resistance, and antibacterial properties to ensure it meets application requirements.

5. The medical goggles with improved anti-fog performance using polymer materials as described in claim 1, characterized in that: The closed-loop air outlet duct (414) has a narrowed section in the middle to form an airflow acceleration zone (415); an air intake gas (5) is set along the air outlet body (4) and also forms a closed loop, and is set in the integrated frame (1); the front end of the air intake gas (5) is narrow and communicates with the airflow acceleration zone (415), and the orientation of the front end of the air intake gas (5) is the same as or similar to the airflow direction of the airflow acceleration zone (415); the rear end of the air intake gas (5) is wide and communicates with the space between the curved lens (2) and the wearer's glasses; an air inlet is also provided on the integrated frame (1); the air inlet is covered with meltblown cloth (11) for filtering bacteria.

6. The medical goggles with improved anti-fog performance using polymer materials as described in claim 5, characterized in that: The horizontal cross-section of the gas (5) is a Tesla tube structure, which allows the gas flow to flow unidirectionally to its narrow end.

7. The medical goggles with improved anti-fog performance using polymer materials as described in claim 6, characterized in that: The temple (3) includes an adjustable temple (31) connected to the integrated frame (1) and a foldable temple (32) connected to the adjustable temple (31); the adjustable temple (31) includes a plurality of segmented bodies (34) connected in sequence via a dumbbell body (33); the end of each segmented body (34) is provided with a cross-shaped groove (341); the width of the outer opening of the cross-shaped groove (341) is smaller than the width inside the groove; the dumbbell body (33) includes a connecting rod (331) and an expanding head (332) fixed at both ends of the connecting rod (331); the diameter of the expanding head (332) is larger than the width of the outer opening of the cross-shaped groove (341) and smaller than the width inside the groove; the diameter of the connecting rod (331) is smaller than the width of the outer opening of the cross-shaped groove (341).

8. The medical goggles with improved anti-fog performance using polymer materials as described in claim 7, characterized in that: The foldable leg (32) is embedded with a UV-C LED lamp (7) on its inner side. After the foldable leg (32) is bent inward, the UV-C LED lamp (7) faces the curved lens (2).

9. A medical goggle with improved anti-fog performance using polymer materials as described in claim 8, characterized in that, The working method of the medical goggles includes the following steps: ① The wearer can adjust the left and right width and up and down position of the entire temple (3) to adapt to the wearer's head size by adjusting the relative posture of the adjacent segments (34); in this process, the position of the dumbbell body (33) in the cross-shaped groove (341) is adjusted; after wearing, the foldable temple (32) can be bent inward to cover the back of the head, thereby improving the wearing stability of the goggles; ② After wearing the goggles, the micro air pump (6) is started by controlling the switch. The micro air pump (6) pressurizes the external air into the drum cavity (411) of the closed-loop uniform air chamber (41). The pressurized air is divided by the diversion guide (42). A part of the airflow passes through the air outlet duct (414) in the closed loop and is ejected from the air outlet slit in the closed loop. Due to the convex arc surface of the air guide connecting arc surface (43) and the arc surface of the curved lens (2), under the Coanda effect, this part of the airflow adheres to the surface of the air guide connecting arc surface (43) and the arc surface of the curved lens (2) and flows. During the process of the airflow passing through the air outlet duct (414) in the closed loop, it passes through the airflow acceleration zone (415). According to Bernoulli's principle, the pressure at this point decreases, forming a negative pressure, thereby causing the air within the scope of the goggles to be drawn by the air ( 5) The air is drawn out by the airflow acceleration zone (415). Since the air within the scope of the goggles is heated by the heat conduction and radiation of the human body, the temperature is high. As the airflow adheres to the surface of the curved lens (2), it heats the outer surface of the curved lens (2) and makes the inner and outer surface temperatures close. This prevents external water vapor from condensing on the outer surface of the curved lens (2) and reduces the adhesion of bacteria and viruses on the outer surface of the curved lens (2). At the same time, it carries out the water vapor generated within the scope of the goggles, preventing excessive humidity around the wearer's eyes. After the air within the scope of the goggles is carried out, there is a certain negative pressure inside. The external air is filtered by the meltblown cloth (11) on the air inlet and then enters the scope of the goggles to ensure that the air within the scope is fresh. ③The pressurized air is diverted by the diversion guide (42), and another part of the airflow is ejected from the closed-loop outlet air duct (413) through the closed-loop outlet air slit. Since the closed-loop outlet air duct (413) and the closed-loop outlet air slit are also set in a closed loop around the curved mirror (2), a wind ring around the curved mirror (2) is formed and sprayed in front of the curved mirror (2); and the space within the range of the wind ring is formed with negative pressure; and the airflow that gathers in front of the curved mirror (2) is carried forward. ④ When not in use, remove the goggles, bend the foldable leg (32) inward so that the inner side of the foldable leg (32) faces the curved lens (2), and turn on the UV-C LED lamp (7) on it to irradiate the curved lens (2) with UV-C light to kill bacteria and viruses that may be attached to the curved lens (2).

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