Oral auxiliary retraction device for oral examination

Abstract

The application relates to the technical field of oral cavity expansion, and discloses an oral cavity auxiliary expansion device for oral cavity examination, which comprises two main bodies, a support arm rotatably connected between the two main bodies, and a rotating mechanism installed in the interior of the main body and used for ensuring the comfort of a patient when the patient's mouth corners are expanded. When the rotating plate I is flipped, the planar area of the rotating plate I faces the patient's mouth corners, at this time, the rotating plate I and the patient's mouth corners provide a contraction space, so that the patient's mouth corners can be slightly contracted, the patient's mouth corners are protected, tearing pain caused by long-time expansion of the patient's mouth corners and cheeks is reduced, and the comfort of the patient during long-time expansion of the main body is improved.

Description

Technical Field

[0001] This invention relates to the field of oral cavity opening technology, specifically to an oral cavity auxiliary opening device for oral examination. Background Technology

[0002] In the field of oral medicine, oral examinations and treatments are very common medical procedures. Among them, oral retractors are medical devices used to help patients keep their mouths open, making it easier for doctors to perform examinations, treatments or surgeries. When performing oral examinations, mouth openers are usually inserted into the patient's mouth to open and stabilize the face. Because the opening arm of the mouth opener applies a continuous and outward pushing force to the patient's cheeks inside the mouth, when the mouth opener is used to open the patient's mouth for a long time, the continuous pushing force generated by the mouth opener can easily cause obvious tearing pain in the corners of the mouth and cheeks. This not only requires frequent adjustment of the opening position, but also reduces the patient's comfort during use. Summary of the Invention

[0003] The purpose of this invention is to provide an oral cavity auxiliary opening device for oral examination, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to an oral cavity auxiliary opening device for oral examination, comprising two main bodies rotatably connected between the two main bodies, and further comprising: A rotating mechanism, installed inside the main body, is used to ensure patient comfort when opening the corners of the patient's mouth; The elastic mechanism is installed on the side wall of the rotating mechanism to prevent the rotating mechanism from shifting when it is opened.

[0005] Furthermore, the main body includes: The auxiliary mechanism is installed on the side wall of the main body. When the patient's mouth is opened, it blocks the patient's tongue to ensure a wide field of vision. The fixing component is installed on the side wall of the main body.

[0006] Furthermore, the rotating mechanism includes a rotating plate disposed on the side wall of the main body, and the rotating mechanism also includes: The push component is installed on the side wall of the rotating plate. An expansion component, installed on the side wall of the push component, is used to transfer the supporting force on the corner of the patient's mouth after the patient experiences pain.

[0007] Furthermore, the elastic mechanism includes two L-plates disposed on the sidewall of the expansion assembly, and the elastic mechanism also includes: The movable component is installed on the side wall of the L-plate. The operation of the movable component can reduce the friction between the expansion component and the patient's cheek and corners of the mouth.

[0008] Furthermore, the auxiliary mechanism includes a tongue stop bar that is detachably connected between the two main bodies. The tongue stop bar is made of elastic material, and a rectangular groove is provided on the side wall of the tongue stop bar. A tongue sleeve is fixedly connected between the two tongue stop bars. The fixing component includes an arc-shaped frame fixedly connected to the side of the main body near the tongue sleeve, and the side wall of the arc-shaped frame is provided with a straight groove; Two sliding grooves are provided on the side of the main body away from the tongue sleeve, and the two sliding grooves are symmetrically distributed with the arc frame as the center; The curved frame is designed to run through the exterior of the main body on the side closest to the main body.

[0009] Furthermore, the rotating plate is rotatably connected to the inside of the arc-shaped frame; The pushing component includes a Z-shaped rod rotatably connected to a side of the rotating plate near the arc frame, with one end of the Z-shaped rod near the tongue stop sliding through to the outside of the straight groove; The end of the Z-shaped rod away from the first rotating plate extends through the outer wall of the rectangular groove. The side of the first rotating plate near the arc frame is flat, while the side away from the arc frame is arc-shaped and can form a complete arc with the arc surface of the main body.

[0010] Furthermore, the end of the Z-shaped rod furthest from the rotating plate is rotatably connected to two inclined plates; The two inclined plates are symmetrically distributed around the Z-shaped rod, and the end of the inclined plate away from the Z-shaped rod is rotatably connected to the side wall of the tongue stop rod; The connection between the Z-shaped rod and the rotating plate is eccentrically set.

[0011] Furthermore, the expansion assembly includes a sliding ring slidably connected inside the sliding groove, and a spring plate is provided on the side wall of the sliding ring, the spring plate being slidably connected inside the sliding groove; The end of the spring plate away from the sliding ring is fixedly connected to the inner wall of the sliding groove. An air bladder is fixedly connected between the two sliding rings. The air bladder is in a semi-inflated state in the initial state. The sliding ring is made of elastic material, and the two sides of the rotating plate that contact the airbag are arc-shaped, which can reduce the collision between the rotating plate and the corner of the patient's mouth when the plate is flipped.

[0012] Furthermore, two L-plates are fixedly connected to the side wall of the airbag, and the two L-plates are symmetrically distributed with the rotating plate as the center; The movable component includes an inclined block fixedly connected to the side of the L-plate near the main body. Two elastic strips are provided on the side of the inclined block away from the L-plate. The ends of the two elastic strips away from the inclined block are fixedly connected to the side wall of the main body. The elastic strips are made of elastic material. The end of the elastic strip near the inclined block is in contact with the side wall of the inclined block.

[0013] Furthermore, a rotating plate two is rotatably connected to the side of the L plate closest to the main body. The end of the rotating plate two away from the L plate is inclined. A return spring is fixedly connected to the side wall of the rotating plate two. The end of the return spring away from the rotating plate two is fixedly connected to the side wall of the L plate. The side of the rotating plate away from the L plate comes into contact with the side wall of the sliding ring.

[0014] The present invention has the following beneficial effects: 1. In this invention, when the rotating plate is flipped, the flat area of ​​the rotating plate will face the corner of the patient's mouth. At this time, the rotating plate and the corner of the patient's mouth will provide a contraction space, so that the corner of the patient's mouth can be slightly contracted to protect the corner of the patient's mouth, reduce the tearing pain caused by the prolonged stretching of the corner of the patient's mouth and cheek, and thus improve the patient's comfort when the main body is stretched for a long time.

[0015] 2. In this invention, the approach of the two elastic strips will compress the areas on both sides of the spring plate, thereby causing the spring plate to move the two sides of the airbag closer together. This causes the center of the airbag to form a concave shape and cover the corners of the patient's mouth. The concavity formed in the center of the airbag can reduce the large lateral pressure on the corners of the patient's mouth and cheeks when the airflow from both ends of the airbag expands, which could lead to instability and slippage in the main body's opening position, affecting the stability during subsequent opening and the safety of subsequent examinations.

[0016] 3. In this invention, when the rotating plate two slides along with the L plate, the rotating plate two will gradually move from an inclined state to a horizontal state. During the movement, it will push the sliding ring to slide and cause the spring plate to be elastically compressed. Then, when the sliding ring slides, it will drive the end of the airbag to slide and change the support position of the airbag end on the patient's cheek. This avoids the airbag end from generating large and continuous support pressure on the fixed position of the patient's cheek after it expands, further reducing secondary pressure injury to the patient during the opening process and further enhancing the patient's comfort during the examination.

[0017] 4. In this invention, the sliding ring slides between two elastic strips that form a cone shape during reset. At this time, the sliding friction between the two sides of the sliding ring and the elastic strips causes the sliding ring to contract and deform, while slowing down the reset speed of the sliding ring. By slowing down the reset speed of the airbag end driven by the sliding ring, the situation where the airbag end causes excessive friction with the contact area of ​​the patient's mouth due to excessive reset speed during the reset process can be reduced. This further ensures the integrity of the oral cavity surface when the patient's mouth is opened, and further improves the safety of oral cavity support.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall partial cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the rear structure of the main body of the present invention; Figure 5 This is a partial cross-sectional schematic diagram of the main body of the present invention; Figure 6 This is an exploded view of the component driving the present invention; Figure 7 This is a schematic diagram of the elastic mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged diagram of point B in the middle.

[0021] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 101. Support arm; 11. Auxiliary mechanism; 111. Tongue stop bar; 112. Tongue stop sleeve; 12. Fixing component; 121. Arc frame; 122. Sliding groove; 2. Rotation mechanism; 201. Rotating plate one; 21. Pushing component; 211. Z-shaped rod; 212. Inclined plate; 22. Expansion component; 221. Sliding ring; 222. Spring plate; 223. Airbag; 3. Elastic mechanism; 301. L-plate; 31. Movable component; 311. Inclined block; 312. Elastic strip; 313. Rotating plate two. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0023] Please see Figure 1 - Figure 8 As shown, the present invention is an oral cavity auxiliary opening device for oral examination, comprising two main bodies 1, with a support arm 101 rotatably connected between the two main bodies 1, and further comprising: Rotation mechanism 2 is installed inside the main body 1 to ensure patient comfort when the corners of the patient's mouth are opened; The elastic mechanism 3 is installed on the side wall of the rotating mechanism 2 to prevent the rotating mechanism 2 from shifting when it is opened.

[0024] Entity 1 includes: The auxiliary mechanism 11 is installed on the side wall of the main body 1. When the patient's mouth is opened, it blocks the patient's tongue to ensure a wide field of vision. Fixing component 12 is installed on the side wall of the main body 1.

[0025] The rotating mechanism 2 includes a rotating plate 201 disposed on the side wall of the main body 1, and the rotating mechanism 2 also includes: Push component 21 is installed on the side wall of rotating plate 201; An expansion component 22 is installed on the side wall of the push component 21 to transfer the supporting force on the corner of the patient's mouth after the patient feels pain.

[0026] The elastic mechanism 3 includes two L-plates 301 disposed on the side wall of the expansion assembly 22, and the elastic mechanism 3 also includes: The movable component 31 is installed on the side wall of the L plate 301. The operation of the movable component 31 can reduce the friction between the expansion component 22 and the patient's cheek and corner of the mouth.

[0027] The auxiliary mechanism 11 includes a tongue stop bar 111 detachably connected between two main bodies 1. The tongue stop bar 111 is made of elastic material. A rectangular groove is provided on the side wall of the tongue stop bar 111. A tongue sleeve 112 is fixedly connected between the two tongue stop bars 111. The fixing component 12 includes an arc-shaped frame 121 fixedly connected to the side of the main body 1 near the tongue sleeve 112, and the side wall of the arc-shaped frame 121 is provided with a straight groove. Two sliding grooves 122 are provided on the side of the main body 1 away from the tongue sleeve 112. The two sliding grooves 122 are symmetrically distributed with the arc frame 121 as the center. The arc-shaped frame 121 is connected to the outside of the main body 1 on the side closest to the main body 1. First, the staff puts the tongue guard 112 into the patient's mouth so that the tongue guard 112 blocks the patient's tongue. At this time, the tongue guard 111 will be in the position of the patient's upper and lower teeth. At the same time, the main body 1 is put into the patient's mouth.

[0028] Rotating plate 201 is rotatably connected to the inside of arc frame 121; The pushing component 21 includes a Z-shaped rod 211 rotatably connected to the side of the rotating plate 201 near the arc frame 121, and one end of the Z-shaped rod 211 near the tongue stop 111 slides through to the outside of the straight groove; The end of the Z-shaped rod 211 away from the rotating plate 201 extends through the outer wall of the rectangular groove. The side of the rotating plate 201 near the arc frame 121 is flat, while the side away from the arc frame 121 is arc-shaped and can form a complete arc with the arc surface of the main body 1. When the tongue stop rod 111 deforms, it will drive the Z-shaped rod 211 to slide away from the main body 1 through the tongue stop sleeve 112. Since the connection point between the Z-shaped rod 211 and the rotating plate 201 is eccentric, the Z-shaped rod 211 will drive the rotating plate 201 to flip when it slides.

[0029] The end of the Z-shaped rod 211 away from the rotating plate 201 is rotatably connected to two inclined plates 212; Two inclined plates 212 are symmetrically distributed around the Z-shaped rod 211, and the end of the inclined plate 212 away from the Z-shaped rod 211 is rotatably connected to the side wall of the tongue stop rod 111. The connection between the Z-shaped rod 211 and the rotating plate 201 is eccentrically set.

[0030] The expansion assembly 22 includes a sliding ring 221 that is slidably connected inside the sliding groove 122. A spring plate 222 is provided on the side wall of the sliding ring 221, and the spring plate 222 is slidably connected inside the sliding groove 122. The end of the spring plate 222 away from the sliding ring 221 is fixedly connected to the inner wall of the sliding groove 122. An airbag 223 is fixedly connected between the two sliding rings 221. The airbag 223 is in a semi-inflated state in the initial state. Among them, the sliding ring 221 is made of elastic material, and the two sides of the rotating plate 201 that contact the airbag 223 are arc-shaped, which can reduce the collision between the rotating plate 201 and the corner of the patient's mouth when it is flipped.

[0031] Two L-plates 301 are fixedly connected to the side wall of the airbag 223, and the two L-plates 301 are symmetrically distributed with the rotating plate 201 as the center. The active component 31 includes an inclined block 311 fixedly connected to the side of the L plate 301 near the main body 1. Two elastic strips 312 are provided on the side of the inclined block 311 away from the L plate 301. The ends of the two elastic strips 312 away from the inclined block 311 are fixedly connected to the side wall of the main body 1. The elastic strips 312 are made of elastic material. The end of the elastic strip 312 near the inclined block 311 contacts the side wall of the inclined block 311. When the L plate 301 slides, it will cause the middle part of the airbag 223 to slide downward, thereby causing the center line position of the L plate 301 to change. At the same time, when the L plate 301 slides, it will cause the inclined block 311 to slide synchronously. When the inclined block 311 slides, it will first squeeze the inclined surfaces at the ends of the two elastic strips 312, causing the two elastic strips 312 to deform and move closer to each other.

[0032] A rotating plate 313 is rotatably connected to the side of L plate 301 near the main body 1. The end of rotating plate 313 away from L plate 301 is inclined. A return spring is fixedly connected to the side wall of rotating plate 313. The end of the return spring away from rotating plate 313 is fixedly connected to the side wall of L plate 301. The side of the rotating plate 313 away from the L plate 301 is in contact with the side wall of the sliding ring 221. When the rotating plate 313 slides with the L plate 301, the rotating plate 313 will gradually move from the inclined state to the horizontal state and push the sliding ring 221 to slide during the movement, causing the spring plate 222 to be elastically compressed.

[0033] In use, the staff first inserts the tongue guard 112 into the patient's mouth to block the tongue. At this time, the tongue bar 111 will be positioned at the patient's upper and lower teeth. Then, the main body 1 is inserted into the patient's mouth. The tongue bar 111 can then exert an outward pushing force on the patient's cheek and corners of the mouth through the main body 1, thereby opening and fixing the patient's jaw and face in the mouth, achieving the purpose of opening the patient's mouth.

[0034] When the main body 1 supports the patient's cheek and corner of the mouth, the semi-inflated airbag 223 will be positioned between the main body 1 and the corner of the patient's mouth. When the patient feels pain due to the prolonged stretching of the two main bodies 1, the patient can bite down on the tongue stop 111. When the tongue stop 111 is bitten down, it will deform and contract. During this deformation, the tongue stop 111 will slide away from the main body 1 via the tongue sleeve 112. Since the connection point between the Z-shaped rod 211 and the rotating plate 201 is eccentrically set, the sliding of the Z-shaped rod 211 will cause the rotating plate 201 to rotate. Utilizing the semi-inflated characteristic of the airbag 223... When the rotating plate 201 flips, it can cause the middle part of the airbag 223 to rotate, causing the middle part of the airbag 223 to fold and rotate. At this time, the gas in the middle area of ​​the airbag 223 will flow to both sides and transfer the support force from the corner of the patient's mouth to the cheeks. At the same time, when the rotating plate 201 flips, the flat area of ​​the rotating plate 201 will face the corner of the patient's mouth. At this time, the rotating plate 201 and the corner of the patient's mouth will provide a contraction space, allowing the corner of the patient's mouth to contract slightly, thereby protecting the corner of the patient's mouth and reducing the tearing pain caused by prolonged stretching of the corner of the mouth and cheeks, thus improving the patient's comfort when the main body 1 is stretched for a long time.

[0035] When the two ends of the airbag 223 expand under the influx of gas in the middle, the expansion of the two ends of the airbag 223 will push the L-plate 301 to slide towards the main body 1. When the L-plate 301 slides, it will cause the middle part of the airbag 223 to slide downward, thereby causing a concave change in the center line position of the L-plate 301. At the same time, when the L-plate 301 slides, it will cause the inclined block 311 to slide synchronously. When the inclined block 311 slides, it will first squeeze the inclined surfaces at the ends of the two elastic strips 312, causing the two elastic strips 312 to deform and move closer to each other. At this time, the two elastic strips 312 will move closer to each other. When the strips 312 move closer together, they compress the areas on both sides of the spring plate 222. This causes the spring plate 222 to move the two sides of the airbag 223 closer together, further creating a concave shape in the middle of the airbag 223 and covering the corners of the patient's mouth. The concavity in the middle of the airbag 223 reduces the lateral pressure on the corners of the patient's mouth and cheek when the airflow from both ends of the airbag 223 expands, which could lead to instability and slippage in the opening position of the main body 1, affecting the stability during subsequent opening and the safety of subsequent examinations.

[0036] When the expansion of the end of the airbag 223 pushes the L-plate 301 to slide, the sliding of the L-plate 301 will drive the rotating plate 313 to slide synchronously. Since the rotating plate 313 is inclined between the sliding ring 221 and the L-plate 301, when the rotating plate 313 slides with the L-plate 301, the rotating plate 313 will gradually move from the inclined state to the horizontal state. During the movement, it will push the sliding ring 221 to slide and cause the spring plate 222 to be elastically compressed. Then, when the sliding ring 221 slides, it will drive the end of the airbag 223 to slide and change the support position of the expansion of the end of the airbag 223 on the patient's cheek. This avoids the airbag 223 from exerting large and continuous support pressure on the fixed position of the patient's cheek after expansion, further reducing secondary pressure injury to the patient during the opening process and further enhancing the patient's comfort during the examination.

[0037] When the L-plate 301 slides and compresses the ends of the two elastic strips 312, causing the two elastic strips 312 to deform and move closer to each other, a conical space is formed between the two elastic strips 312. Simultaneously, when the L-plate 301 pushes the sliding ring 221 to slide via the rotating plate 313, the rotating plate 313 gradually changes from an inclined state to a horizontal state, and its inclined end subsequently separates from the sliding ring 221. At this time, the sliding ring 221 is pushed back to its original position by the force of the elastic potential energy released on the spring plate 222. The sliding ring 221 resets during this process. The two elastic strips 312 that form a cone shape slide between each other. At this time, the sliding friction between the two sides of the sliding ring 221 and the elastic strips 312 will cause the sliding ring 221 to contract and deform, while slowing down the reset speed of the sliding ring 221. By slowing down the reset speed of the end of the airbag 223 driven by the sliding ring 221, the situation where the end of the airbag 223 causes large friction with the contact area of ​​the patient's oral cavity due to excessive reset speed during the reset process can be reduced. This further ensures the integrity of the oral cavity surface when the patient's oral cavity is opened, and further improves the safety of the patient's oral cavity support.

[0038] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An oral cavity auxiliary opening device for oral examination, comprising two main bodies (1), wherein a support arm (101) is rotatably connected between the two main bodies (1), characterized in that, Also includes: Rotation mechanism (2), which is installed inside the main body (1) to ensure patient comfort when the corners of the patient's mouth are opened; The elastic mechanism (3) is installed on the side wall of the rotating mechanism (2) to prevent the rotating mechanism (2) from shifting when it is spread out when the elastic mechanism (3) is working.

2. The oral cavity auxiliary opening device for oral examination according to claim 1, characterized in that: The main body (1) includes: The auxiliary mechanism (11) is installed on the side wall of the main body (1) to block the patient's tongue when the patient's mouth is opened, so as to ensure a wide field of vision. Fixing component (12) is installed on the side wall of the main body (1).

3. The oral cavity auxiliary opening device for oral examination according to claim 2, characterized in that: The rotating mechanism (2) includes a rotating plate (201) disposed on the side wall of the main body (1), and the rotating mechanism (2) further includes: A pushing component (21) is mounted on the side wall of the rotating plate (201); An expansion component (22) is mounted on the side wall of the push component (21) for transferring the supporting force on the corner of the patient's mouth after the patient feels pain.

4. The oral cavity auxiliary opening device for oral examination according to claim 3, characterized in that: The elastic mechanism (3) includes two L-plates (301) disposed on the side wall of the expansion assembly (22), and the elastic mechanism (3) further includes: The active component (31) is installed on the side wall of the L plate (301). The operation of the active component (31) can reduce the friction between the expansion component (22) and the patient's cheek and corner of the mouth.

5. The oral cavity auxiliary opening device for oral examination according to claim 4, characterized in that: The auxiliary mechanism (11) includes a tongue stop (111) detachably connected between two main bodies (1). The tongue stop (111) is made of elastic material. A rectangular groove is provided on the side wall of the tongue stop (111). A tongue sleeve (112) is fixedly connected between the two tongue stops (111). The fixing component (12) includes an arc-shaped frame (121) fixedly connected to the side of the main body (1) near the tongue sleeve (112), and the side wall of the arc-shaped frame (121) is provided with a straight groove; The main body (1) has two sliding grooves (122) on the side away from the tongue sleeve (112), and the two sliding grooves (122) are symmetrically distributed with the arc frame (121) as the center; Among them, the side of the arc frame (121) close to the main body (1) is connected to the outside of the main body (1).

6. The oral cavity auxiliary opening device for oral examination according to claim 5, characterized in that: The rotating plate (201) is rotatably connected to the inside of the arc-shaped frame (121); The pushing assembly (21) includes a Z-shaped rod (211) rotatably connected to the side of the rotating plate (201) near the arc frame (121), and one end of the Z-shaped rod (211) near the tongue stop (111) slides through to the outside of the straight groove; The end of the Z-shaped rod (211) away from the rotating plate (201) extends through the outer wall of the rectangular groove.

7. The oral cavity auxiliary opening device for oral examination according to claim 6, characterized in that: The Z-shaped rod (211) is rotatably connected to two inclined plates (212) at the end away from the rotating plate (201). The two inclined plates (212) are symmetrically distributed around the Z-shaped rod (211) as the center, and the end of the inclined plate (212) away from the Z-shaped rod (211) is rotatably connected to the side wall of the tongue stop (111); The connection between the Z-shaped rod (211) and the rotating plate (201) is eccentrically set.

8. The oral cavity auxiliary opening device for oral examination according to claim 5, characterized in that: The expansion assembly (22) includes a sliding ring (221) slidably connected inside the sliding groove (122), and a spring plate (222) is provided on the side wall of the sliding ring (221), and the spring plate (222) is slidably connected inside the sliding groove (122); The end of the spring plate (222) away from the sliding ring (221) is fixedly connected to the inner wall of the sliding groove (122), and an airbag (223) is fixedly connected between the two sliding rings (221). Among them, the sliding ring (221) is made of elastic material.

9. The oral cavity auxiliary opening device for oral examination according to claim 8, characterized in that: The two L-plates (301) are fixedly connected to the side wall of the airbag (223), and the two L-plates (301) are symmetrically distributed with the rotating plate (201) as the center; The active component (31) includes an inclined block (311) fixedly connected to the side of the L plate (301) near the main body (1). Two elastic strips (312) are provided on the side of the inclined block (311) away from the L plate (301). One end of the two elastic strips (312) away from the inclined block (311) is fixedly connected to the side wall of the main body (1). The elastic strips (312) are made of elastic material. The end of the elastic strip (312) near the inclined block (311) is in contact with the side wall of the inclined block (311).

10. The oral cavity auxiliary opening device for oral examination according to claim 8, characterized in that: The L plate (301) is rotatably connected to a rotating plate two (313) on the side near the main body (1). The end of the rotating plate two (313) away from the L plate (301) is inclined. A return spring is fixedly connected to the side wall of the rotating plate two (313). The end of the return spring away from the rotating plate two (313) is fixedly connected to the side wall of the L plate (301). The side of the rotating plate 2 (313) away from the L plate (301) is in contact with the side wall of the sliding ring (221).

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