Oral protection mask

Abstract

The application discloses an oral cavity protection mask, comprising: a mask body, a plurality of fixing rings are fixedly connected to the outer wall of the mask body, the outer wall of each of the plurality of fixing rings is fixedly connected with a binding rope, and a supporting mechanism is arranged on the mask body. The oral cavity protection mask provided by the application is worn on the face of a patient through the binding rope, and the first supporting half ring and the second supporting half ring are inserted into the mouth of the patient, then the first supporting half ring and the second supporting half ring can slide to the two sides respectively according to actual needs, the distance between the first supporting half ring and the second supporting half ring is increased, and then the degree of opening of the mouth of the patient can be determined according to the size of the oral cavity of the patient, so as to ensure the comfort of the patient, and the degree of opening can be adjusted according to the treatment needs of a doctor, so that the doctor can clearly see the treatment area, so as to provide a better operation space, improve the treatment effect, make the device meet the actual treatment needs, and improve the practicability of the device.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an oral protective mask. Background Technology

[0002] A dental infection treatment protective mask is a device specifically designed to protect the patient's face during dental treatment. Typically made of durable and lightweight materials, it covers the patient's face to prevent water, medication, blood, or other substances from splashing onto the face or eyes during treatment. Its significance lies in not only effectively protecting the patient's eyes and facial skin from infectious agents or harmful substances, but also reducing discomfort during treatment and improving safety and comfort. By using the protective mask, doctors can focus more on the treatment, while patients experience a greater sense of security.

[0003] For example, Chinese utility model patent (CN218418527U) discloses a protective face shield for dental patients, which states: "By setting an opening on the face shield body, the face shield can be used during the patient's oral diagnosis and treatment, thereby protecting the patient's face and preventing saliva or medicine from splashing onto the patient's face, thus playing a protective role for the patient's face. In addition, this utility model uses a disposable connecting block, which improves safety performance and avoids the transmission of diseases between patients. Moreover, the block can also protect the patient's oral cavity, preventing saliva from flowing onto the face shield and causing disease transmission." It also states: "Because the above-mentioned face shield does not have a corresponding opening (during the diagnosis and treatment process in dentistry, the patient's mouth needs to be kept open, and doctors or nurses need to hold medical instruments to examine or treat the patient's oral cavity), that is, using the above-mentioned face shield will affect the normal diagnosis and treatment process in dentistry. Therefore, in the actual diagnosis or treatment process in dentistry, simply using a simple barrier such as a sterile towel to cover the patient's face for protection has a poor protective effect."

[0004] In summary, existing technologies utilize openings on the mask body to allow the mask to be used during oral diagnosis and treatment. However, this approach has the following technical problems: the device only provides a fixed-size opening on the mask, while in reality, different patients have different oral cavity sizes, and the required opening size varies depending on the specific treatment. A fixed-size opening cannot meet actual usage needs. Therefore, this application proposes an oral protective mask to solve the technical problems mentioned in the aforementioned patents and provide a new technical solution. Summary of the Invention

[0005] Therefore, it is necessary to address the aforementioned technical problems by providing an oral protective mask. After the mask body is worn on the patient's face via a binding rope, the first and second support semi-rings are inserted into the patient's mouth. Subsequently, the first and second support semi-rings can be slid to the sides as needed, increasing the distance between them. This allows the degree to be opened based on the patient's mouth size, ensuring patient comfort. Furthermore, the degree of opening can be adjusted according to the doctor's treatment needs, enabling the doctor to clearly see the treatment area, providing better operating space, improving treatment effectiveness, and ensuring the device meets actual treatment requirements, thus enhancing its practicality.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An oral protective mask used in the treatment of oral infections.

[0008] The oral protective mask specifically includes:

[0009] The mask body has multiple fixing rings fixedly connected to its outer wall, and binding ropes are fixedly connected to the outer walls of each of the multiple fixing rings. A support mechanism is provided on the mask body. A ventilation mechanism is provided outside the mask body and above the support mechanism. A shielding mechanism is provided outside the mask body and above the ventilation mechanism.

[0010] The support mechanism includes a first support plate, a second support plate, a support component, a limiting component, a buffer component, and a dragging component. The outer wall of the mask body is fixedly connected to the first support plate, and the outer wall of the mask body, located below the first support plate, is fixedly connected to the second support plate.

[0011] In a preferred embodiment of the oral protective mask provided by the present invention, the support assembly includes a first support semi-ring and a second support semi-ring. The first support semi-ring and the second support semi-ring are slidably connected to the bottom of a first support plate and slidably connected to the top of a second support plate. An elastic baffle is fixedly connected to the side of the first support semi-ring and the second support semi-ring that is away from each other. The side of the two elastic baffles that is away from each other is fixedly connected to the outer wall of the mask body. A sliding plate is fixedly connected to the outer wall of the first support semi-ring, and the sliding plate is slidably connected to the inner wall of the second support semi-ring.

[0012] In a preferred embodiment of the oral protective mask provided by the present invention, the limiting component includes a limiting toothed plate. The limiting toothed plate is fixedly connected to the outer wall of the second supporting half-ring. The limiting toothed plate is slidably connected to the inner wall of the first supporting half-ring. A rotating shaft is rotatably connected to the inner wall of the first supporting half-ring. A limiting claw adapted to the limiting toothed plate is fixedly connected to the outer wall of the rotating shaft. First torsion springs are respectively sleeved on the upper and lower sides of the limiting claw outside the rotating shaft. The two ends of the first torsion springs are respectively fixedly connected to the outer wall of the limiting claw and the inner wall of the first supporting half-ring. A handle is fixedly connected to the top of the rotating shaft.

[0013] In a preferred embodiment of the oral protective mask provided by the present invention, the buffer assembly includes a housing, the inner wall of the first supporting semi-ring is fixedly connected to the housing, a connecting rod is slidably connected to the inner wall of the housing, one end of the connecting rod located outside the housing is fixedly connected to the outer wall of the limiting tooth plate, a piston is fixedly connected to the one end of the connecting rod located inside the housing, the piston is slidably connected to the inner wall of the housing, a first spring is fixedly connected to the side of the piston away from the connecting rod, the end of the first spring away from the piston is fixedly connected to the inner wall of the housing, and two through holes are opened on the outer wall of the housing.

[0014] In a preferred embodiment of the oral protective mask provided by the present invention, the connecting assembly includes sliding columns and a top plate. Sliding columns are slidably connected to the inner wall of the second support plate near the four corners. A limiting disc is fixedly connected to the top of each of the four sliding columns. The top of the top plate is fixedly connected to the bottom of the four sliding columns. A second spring is sleeved on the outside of each of the four sliding columns. The two ends of the second spring are fixedly connected to the limiting disc and the outer wall of the second support plate, respectively.

[0015] In a preferred embodiment of the oral protective mask provided by the present invention, the ventilation mechanism includes a connecting shell, the outer wall of the mask body is fixedly connected to the connecting shell, and the inner wall of the connecting shell is fixedly connected to a fixing net.

[0016] As a preferred embodiment of the oral protective mask provided by the present invention, the shielding mechanism includes a fixing block, an insert block, a threaded rod, a protective component, and a pulling component. Two fixing blocks are fixedly connected to the outer wall of the mask body. Insert blocks are movably inserted into the inner walls of the two fixing blocks respectively. Threaded rods are threadedly connected to the inner walls of the two fixing blocks respectively. The threaded rods are movably inserted into the insert blocks.

[0017] In a preferred embodiment of the oral protective mask provided by the present invention, the protective component includes a connecting shaft, which is rotatably connected to the inner walls of two inserts. A protective lens is fixedly connected to the outer wall of the connecting shaft. A second torsion spring is respectively sleeved on the outer wall of the connecting shaft and on both sides of the protective lens. The two ends of the second torsion spring are respectively fixedly connected to the outer wall of the protective lens and the insert.

[0018] In a preferred embodiment of the oral protective mask provided by the present invention, the pulling assembly includes a limiting ring. The limiting ring is fixedly connected to the outer wall of the connecting shaft and located inside one of the inserts. The limiting ring has multiple limiting grooves on its outer side. A stop block is slidably connected to the inner wall of one of the inserts near the limiting ring. A connecting ring is fixedly connected to the outer wall of the stop block. A third spring is sleeved on the outer side of the stop block. The two ends of the third spring are respectively fixedly connected to the inner wall of the insert block and the outer wall of the connecting ring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The oral protective mask provided by this invention involves wearing the mask body on the patient's face via a binding rope, and simultaneously inserting the first and second support semi-rings into the patient's mouth. The first and second support semi-rings can then be slid to the sides as needed, increasing the distance between them. This allows the degree to be opened based on the size of the patient's mouth, ensuring patient comfort. Furthermore, the degree of opening can be adjusted according to the doctor's treatment needs, enabling the doctor to clearly see the treatment area, providing better operating space, improving treatment effectiveness, and making the device meet actual treatment requirements, thus enhancing its practicality.

[0021] The oral protective mask provided by this invention allows for the rotation of a handle when it is necessary to release the support on the patient's mouth. This causes the limiting claw to disengage from the limiting tooth plate, thereby releasing the restriction that fixes the relative positions of the first and second supporting half-rings. Subsequently, under the pressure of the patient's facial muscles, the distance between the first and second supporting half-rings decreases. During this process, the connecting rod slides inward into the housing, causing the piston to compress the gas inside the housing. This results in a decrease in air volume and an increase in pressure, generating a reaction force that slows down the rate at which the distance between the first and second supporting half-rings decreases. This allows the patient's oral cavity and facial muscles to gradually adapt, avoiding discomfort or pain caused by sudden pressure changes and improving the practicality of the device.

[0022] The oral protective mask provided by this invention, through the arrangement of four second springs, allows the top plate to tend to fit against the bottom of the mask body, thereby providing support for the patient's chin and improving the stability of the device. The connecting shell provides space for the patient's nose, avoiding pressure on the nose caused by wearing the device, thus improving the comfort of wearing the device. Furthermore, the design of the fixing net allows the patient to breathe more smoothly, improving the practicality of the device.

[0023] The oral protective mask provided by this invention, with a protective lens attached to the outside of the mask body, can shield the patient's eyes from the strong light used during treatment. The device can release the restriction between the insert block and the fixing block via two threaded rods, allowing disassembly of the insert block, threaded rods, connecting shaft, protective lens, second torsion spring, limiting ring, limiting groove, stop block, connecting ring, and third spring. Since this part of the structure does not directly contact the patient, it can be reused after cleaning and disinfection, reducing treatment costs. Furthermore, the protective lens can be moved, causing the connecting shaft to rotate and opening the lens, allowing the doctor to observe the anesthesia status through the patient's eyes, meeting the actual treatment needs of cavity infections. Pulling the stop block releases the restriction on the protective lens, allowing it to adhere to the mask body under the elastic force of the second torsion spring, protecting the patient's eyes. When it is necessary to examine the patient's eyes, it is not necessary to disassemble the entire device or the entire shielding mechanism, reducing the probability of cross-infection. Attached Figure Description

[0024] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the overall structure of the oral protective mask provided by the present invention;

[0026] Figure 2 Another perspective view of the overall structure of the oral protective mask provided by the present invention;

[0027] Figure 3 The oral protective mask provided by the present invention Figure 2 Enlarged view of A in the middle;

[0028] Figure 4 An exploded internal structural diagram of the support mechanism of the oral protective mask provided by the present invention;

[0029] Figure 5 The oral protective mask provided by the present invention Figure 4 Enlarged view of B in the middle;

[0030] Figure 6 A schematic diagram of the buffer assembly separation structure of the oral protective mask provided by the present invention;

[0031] Figure 7 A magnified schematic diagram of the internal structure of the shielding mechanism of the oral protective mask provided by the present invention;

[0032] Figure 8 The oral protective mask provided by the present invention Figure 7 A magnified view of C.

[0033] The markings in the diagram are explained as follows:

[0034] 1. Mask body; 2. Fixing ring; 3. Binding rope; 4. Support mechanism; 5. Ventilation mechanism; 6. Shielding mechanism; 7. First support plate; 8. First support half ring; 9. Second support half ring; 10. Second support plate; 11. Elastic cover; 12. Sliding plate; 13. Restricting tooth plate; 14. Rotating shaft; 15. Restricting claw; 16. First torsion spring; 17. Handle; 18. Housing; 19. Connecting rod; 20. Piston; 21. First spring; 22. Through hole; 23. Sliding column; 24. Restricting disc; 25. Second spring; 26. Top plate; 27. Connecting shell; 28. Fixing net; 29. ​​Fixing block; 30. Insert block; 31. Threaded rod; 32. Connecting shaft; 33. Protective lens; 34. Second torsion spring; 35. Restricting ring; 36. Restricting groove; 37. Stop block; 38. Connecting ring; 39. Third spring. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0036] As described in the background art, however, the device only has a fixed-size opening on the mask. In reality, the size of the mouths of different patients varies, and the required opening size of the patient's mouth also varies depending on the specific treatment situation. A fixed-size opening cannot meet the actual needs of use.

[0037] To address this technical problem, the present invention provides an oral protective mask that is used in the treatment of oral infections.

[0038] For details, please refer to Figures 1-2 Oral protective masks specifically include:

[0039] The mask body 1 has multiple fixing rings 2 fixedly connected to its outer wall, and binding ropes 3 fixedly connected to the outer walls of the multiple fixing rings 2. A support mechanism 4 is provided on the mask body 1. A ventilation mechanism 5 is provided on the outside of the mask body 1 and above the support mechanism 4. A shielding mechanism 6 is provided on the outside of the mask body 1 and above the ventilation mechanism 5.

[0040] The support mechanism 4 includes a first support plate 7, a second support plate 10, a support component, a limiting component, a buffer component, and a dragging component. The first support plate 7 is fixedly connected to the outer wall of the mask body 1, and the second support plate 10 is fixedly connected to the outer wall of the mask body 1 and located below the first support plate 7.

[0041] The oral protective mask provided by this invention, after the mask body 1 is worn on the patient's face by the binding rope 3, simultaneously inserts the first support half-ring 8 and the second support half-ring 9 into the patient's mouth. Then, according to actual needs, the first support half-ring 8 and the second support half-ring 9 can be slid to the sides respectively, increasing the distance between the first support half-ring 8 and the second support half-ring 9. This allows the degree to be opened according to the size of the patient's mouth, ensuring the patient's comfort. Furthermore, the degree of opening can be adjusted according to the doctor's treatment needs, allowing the doctor to clearly see the treatment area, providing better operating space, improving treatment effectiveness, and enabling the device to meet actual treatment needs, thus improving the practicality of the device.

[0042] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0043] Example 1:

[0044] Please refer to Figures 2-6 An oral protective mask comprising:

[0045] The support assembly includes a first support semi-ring 8 and a second support semi-ring 9. Both the first support semi-ring 8 and the second support semi-ring 9 are slidably connected to the bottom of the first support plate 7 and to the top of the second support plate 10. An elastic baffle 11 is fixedly connected to the side of the first support semi-ring 8 and the second support semi-ring 9 that is away from each other. The side of the two elastic baffles 11 that is away from each other is fixedly connected to the outer wall of the mask body 1. A sliding plate 12 is fixedly connected to the outer wall of the first support semi-ring 8. The sliding plate 12 is slidably connected to the inner wall of the second support semi-ring 9. The connecting rod 19 slides inside the second support semi-ring 9, which can improve the stability of the sliding between the first support semi-ring 8 and the second support semi-ring 9.

[0046] The limiting assembly includes a limiting toothed plate 13. The limiting toothed plate 13 is fixedly connected to the outer wall of the second support half-ring 9. The limiting toothed plate 13 is slidably connected to the inner wall of the first support half-ring 8. The inner wall of the first support half-ring 8 is rotatably connected to a rotating shaft 14. The outer wall of the rotating shaft 14 is fixedly connected to a limiting claw 15 that is adapted to the limiting toothed plate 13. The outer side of the rotating shaft 14 and the upper and lower sides of the limiting claw 15 are respectively fitted with first torsion springs 16. When there is no other external force, the limiting claw 15 fits against the outer side of the limiting toothed plate 13, limiting the first support half-ring 8 and the second support half-ring 9 to approach each other, and not limiting the first support half-ring 8 and the second support half-ring 9 to move away from each other. The two ends of the first torsion spring 16 are fixedly connected to the outer wall of the limiting claw 15 and the inner wall of the first support half-ring 8, respectively. The top of the rotating shaft 14 is fixedly connected to a handle 17.

[0047] The buffer assembly includes a housing 18. The housing 18 is fixedly connected to the inner wall of the first supporting semi-ring 8. A connecting rod 19 is slidably connected to the inner wall of the housing 18. One end of the connecting rod 19 located outside the housing 18 is fixedly connected to the outer wall of the limiting tooth plate 13. A piston 20 is fixedly connected to the one end of the connecting rod 19 located inside the housing 18. The piston 20 is slidably connected to the inner wall of the housing 18. A first spring 21 is fixedly connected to the side of the piston 20 away from the connecting rod 19. The end of the first spring 21 away from the piston 20 is fixedly connected to the inner wall of the housing 18. Two openings are formed on the outer wall of the housing 18. The through-hole 22, after supporting the patient's mouth for a period of time, when the restriction between the first support half-ring 8 and the second support half-ring 9 is released, the first support half-ring 8 and the second support half-ring 9 move closer to each other, causing the piston 20 to move into the inside of the sleeve 18. This causes the piston 20 to compress the gas inside the sleeve 18, resulting in a decrease in air volume and an increase in pressure. This generates a reaction force, which slows down the rate at which the distance between the first support half-ring 8 and the second support half-ring 9 decreases, allowing the patient's oral cavity and facial muscles to gradually adapt and avoid discomfort or pain caused by sudden pressure changes.

[0048] The jacking assembly includes sliding posts 23 and a top plate 26. Sliding posts 23 are slidably connected to the inner wall of the second support plate 10 near the four corners. Limiting discs 24 are fixedly connected to the top of the four sliding posts 23. The top of the top plate 26 is fixedly connected to the bottom of the four sliding posts 23. A second spring 25 is sleeved on the outside of each of the four sliding posts 23. The two ends of the second spring 25 are fixedly connected to the limiting discs 24 and the outer wall of the second support plate 10. The top plate 26 can support the patient's chin to improve the stability and comfort of the patient wearing it.

[0049] With the above structural design, after the mask body 1 is worn on the patient's face via the binding rope 3, the first support half-ring 8 and the second support half-ring 9 are simultaneously inserted into the patient's mouth. Then, as needed, the first support half-ring 8 and the second support half-ring 9 can be slid to the sides respectively, increasing the distance between them. During this process, the sliding plate 12 slides inside the second support half-ring 9, while the restricting toothed plate 13 slides inside the first support half-ring 8. After adjusting the distance between the first support half-ring 8 and the second support half-ring 9 to a suitable position, the distance is fixed under the restriction of the limiting claw 15, allowing the medical staff to release their grip. When it is necessary to release the support to the patient's mouth, the handle 17 can be rotated, causing the first torsion spring 16 to deform. The limiting claw 15 disengages from the limiting tooth plate 13, thereby releasing the restriction on the relative position of the first supporting half ring 8 and the second supporting half ring 9. Subsequently, under the pressure of the patient's facial muscles, the distance between the first supporting half ring 8 and the second supporting half ring 9 decreases. During this process, the connecting rod 19 slides into the housing 18, causing the piston 20 to compress the gas inside the housing 18, resulting in a decrease in air volume and an increase in pressure, generating a reaction force. This slows down the rate at which the distance between the first supporting half ring 8 and the second supporting half ring 9 decreases, allowing the patient's oral cavity and facial muscles to gradually adapt. When wearing the device, the patient's chin can be placed on the top plate 26. Through the setting of the four second springs 25, the top of the top plate 26 tends to fit against the bottom of the mask body 1, thereby providing support for the patient's chin.

[0050] Example 2:

[0051] The oral protective mask provided in Example 1 has been further optimized, specifically, as follows: Figure 2 As shown, the ventilation mechanism 5 includes a connecting shell 27. The outer wall of the mask body 1 is fixedly connected to the connecting shell 27, and the inner wall of the connecting shell 27 is fixedly connected to a fixing net 28. The fixing net 28 can block external lint and reduce the situation where the patient's nose itches and causes sneezing, which affects the treatment.

[0052] Through the above structural design, the connection shell 27 provides space for the patient's nose, and the fixed net 28 facilitates the exchange of breathing gas between the patient and the outside world.

[0053] Example 3:

[0054] The oral protective mask provided in Example 1 has been further optimized, specifically, as follows: Figures 3-5As shown, the shielding mechanism 6 includes a fixed block 29, an insert block 30, a threaded rod 31, a protective component, and a pulling component. Two fixed blocks 29 are fixedly connected to the outer wall of the mask body 1. Insert blocks 30 are movably inserted into the inner walls of the two fixed blocks 29 respectively. Threaded rods 31 are threadedly connected to the inner walls of the two fixed blocks 29 respectively. The threaded rods 31 are movably inserted into the insert blocks 30. Anti-slip discs are provided on the threaded rods 31 to facilitate rotation of the threaded rods 31. By rotating the threaded rods 31, the restriction between the insert blocks 30 and the fixed blocks 29 can be released.

[0055] The protective assembly includes a connecting shaft 32, which is rotatably connected to the inner walls of two inserts 30. A protective lens 33 is fixedly connected to the outer wall of the connecting shaft 32. A second torsion spring 34 is respectively sleeved on the outer wall of the connecting shaft 32 and on both sides of the protective lens 33. The second torsion spring 34 can make the protective lens 33 tend to fit against the outside of the mask body 1. The two ends of the second torsion spring 34 are respectively fixedly connected to the outer walls of the protective lens 33 and the inserts 30. The protective lens 33 is a dental protective eye, which has a special filtering spectrum and can effectively reduce light stimulation to the eyes and prevent eye damage caused by ultraviolet or blue light. Dental protective eyewear is existing technology, so it will not be described in detail.

[0056] The pulling assembly includes a limiting ring 35. The limiting ring 35 is fixedly connected to the outer wall of the connecting shaft 32 and located inside one of the inserts 30. The limiting ring 35 has multiple limiting grooves 36 on its outer side. A stop block 37 is slidably connected to the inner wall of one of the inserts 30 near the limiting ring 35. A connecting ring 38 is fixedly connected to the outer wall of the stop block 37. The bottom side of the stop block 37 away from the mask body 1 has a rounded corner, and the other bottom side is a right angle, which can limit the rotation of the limiting ring 35. When the limiting ring 35 rotates and causes the limiting groove 36 to squeeze the rounded corner, the stop block 37 slides upward, thus not limiting the rotation of the limiting ring 35 in that direction. When the limiting ring 35 rotates and causes the limiting groove 36 to squeeze the right angle side of the stop block 37, the stop block 37 cannot be squeezed upward, so that the limiting ring 35 cannot rotate. A third spring 39 is sleeved on the outside of the stop block 37. The two ends of the third spring 39 are fixedly connected to the inner wall of the insert 30 and the outer wall of the connecting ring 38, respectively.

[0057] Through the above structural design, when installing the insert 30 and related components onto the fixing block 29, the two inserts 30 are inserted into their corresponding positions on the fixing block 29. Then, by rotating the two threaded rods 31, the two threaded rods 31 are inserted into their respective inserts 30, thus restricting the relationship between the inserts 30 and the fixing block 29. This allows for the installation of the inserts 30, threaded rods 31, connecting shaft 32, protective lens 33, second torsion spring 34, limiting ring 35, limiting groove 36, stop block 37, connecting ring 38, and third spring 39. When it is necessary to observe the patient's eye condition, the protective lens 33 can be moved, causing the connecting shaft 32 to rotate. During this process, the second torsion spring 34 deforms, and the limiting ring 35 presses against the rounded corner of the stop block 37, forcing the stop block 37 to slide upwards within the insert 30. The third spring 39 deforms, and as the limiting ring 35 rotates, the bottom of the stop 37 can leave the limiting groove 36 and contact the outer wall of the limiting ring 35. As the limiting ring 35 rotates further, the bottom of the stop 37 corresponds to the top of the next limiting groove 36. Then, under the action of the elastic force of the third spring 39, the stop 37 is inserted into the limiting groove 36. The protective lens 33 is continuously rotated until it is opened so as not to obstruct the doctor's observation of the patient's eye condition. After the observation of the patient's eye condition is completed, the protective lens 33 can be attached to the mask body 1. By pulling the stop 37, the third spring 39 will deform accordingly, causing the stop 37 to leave the corresponding limiting groove 36, releasing the restriction on the protective lens 33, so that the protective lens 33 can be attached to the mask body 1 under the action of the elastic force of the second torsion spring 34.

Claims

1. An oral protective face shield, comprising a face shield body (1), characterized in that: The outer wall of the mask body (1) is fixedly connected with multiple fixing rings (2), and the outer wall of each of the multiple fixing rings (2) is fixedly connected with binding ropes (3). A support mechanism (4) is provided on the mask body (1). A ventilation mechanism (5) is provided on the outside of the mask body (1) and above the support mechanism (4). A shielding mechanism (6) is provided on the outside of the mask body (1) and above the ventilation mechanism (5). The support mechanism (4) includes a first support plate (7), a second support plate (10), a support component, a limiting component, a buffer component, and a dragging component. The outer wall of the mask body (1) is fixedly connected to the first support plate (7), and the outer wall of the mask body (1) and below the first support plate (7) is fixedly connected to the second support plate (10). The support assembly includes a first support half-ring (8) and a second support half-ring (9). The first support half-ring (8) and the second support half-ring (9) are slidably connected to the bottom of the first support plate (7). The first support half-ring (8) and the second support half-ring (9) are slidably connected to the top of the second support plate (10). An elastic baffle (11) is fixedly connected to the side of the first support half-ring (8) and the second support half-ring (9) that is far apart from each other. The side of the two elastic baffles (11) that is far apart from each other is fixedly connected to the outer wall of the mask body (1). A sliding plate (12) is fixedly connected to the outer wall of the first support half-ring (8). The sliding plate (12) is slidably connected to the inner wall of the second support half-ring (9). The limiting assembly includes a limiting toothed plate (13), the outer wall of the second support half ring (9) is fixedly connected to the limiting toothed plate (13), the limiting toothed plate (13) is slidably connected to the inner wall of the first support half ring (8), the inner wall of the first support half ring (8) is rotatably connected to a rotating shaft (14), the outer wall of the rotating shaft (14) is fixedly connected to a limiting claw (15) adapted to the limiting toothed plate (13), a first torsion spring (16) is respectively sleeved on the outside of the rotating shaft (14) and on the upper and lower sides of the limiting claw (15), the two ends of the first torsion spring (16) are respectively fixedly connected to the outer wall of the limiting claw (15) and the inner wall of the first support half ring (8), and a handle (17) is fixedly connected to the top of the rotating shaft (14). The buffer assembly includes a housing (18), the inner wall of the first supporting semi-ring (8) is fixedly connected to the housing (18), the inner wall of the housing (18) is slidably connected to a connecting rod (19), one end of the connecting rod (19) located outside the housing (18) is fixedly connected to the outer wall of the limiting tooth plate (13), the one end of the connecting rod (19) located inside the housing (18) is fixedly connected to a piston (20), the piston (20) is slidably connected to the inner wall of the housing (18), the side of the piston (20) away from the connecting rod (19) is fixedly connected to a first spring (21), the end of the first spring (21) away from the piston (20) is fixedly connected to the inner wall of the housing (18), and the outer wall of the housing (18) has two through holes (22). The drag assembly includes sliding columns (23) and a top plate (26). Sliding columns (23) are slidably connected to the inner wall of the second support plate (10) and near the four corners. A limiting disc (24) is fixedly connected to the top of each of the four sliding columns (23). The top of the top plate (26) is fixedly connected to the bottom of the four sliding columns (23). A second spring (25) is sleeved on the outside of each of the four sliding columns (23). The two ends of the second spring (25) are fixedly connected to the limiting disc (24) and the outer wall of the second support plate (10).

2. The oral protective mask according to claim 1, characterized in that, The ventilation mechanism (5) includes a connecting shell (27), the outer wall of the mask body (1) is fixedly connected to the connecting shell (27), and the inner wall of the connecting shell (27) is fixedly connected to the fixing net (28).

3. The oral protective mask according to claim 1, characterized in that, The shielding mechanism (6) includes a fixed block (29), an insert block (30), a threaded rod (31), a protective component, and a pulling component. The outer wall of the mask body (1) is fixedly connected to two fixed blocks (29). The inner walls of the two fixed blocks (29) are respectively movably inserted with insert blocks (30). The inner walls of the two fixed blocks (29) are respectively threaded with threaded rods (31). The threaded rods (31) are movably inserted into the insert blocks (30).

4. The oral protective mask according to claim 3, characterized in that, The protective assembly includes a connecting shaft (32), which is rotatably connected to the inner walls of two inserts (30). A protective lens (33) is fixedly connected to the outer wall of the connecting shaft (32). A second torsion spring (34) is respectively sleeved on the outer wall of the connecting shaft (32) and on both sides of the protective lens (33). The two ends of the second torsion spring (34) are respectively fixedly connected to the outer walls of the protective lens (33) and the inserts (30).

5. The oral protective mask according to claim 4, characterized in that, The pulling assembly includes a limiting ring (35). The limiting ring (35) is fixedly connected to the outer wall of the connecting shaft (32) and located inside one of the inserts (30). The limiting ring (35) has multiple limiting grooves (36) on its outer side. A stop (37) is slidably connected to the inner wall of one of the inserts (30) near the limiting ring (35). A connecting ring (38) is fixedly connected to the outer wall of the stop (37). A third spring (39) is sleeved on the outer side of the stop (37). The two ends of the third spring (39) are fixedly connected to the inner wall of the insert (30) and the outer wall of the connecting ring (38), respectively.

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