Oral cavity operation field exposure device

Abstract

The invention discloses an oral cavity operation field exposure device, and belongs to the technical field of medical instruments. The invention solves the problem that in the prior art, a novel oral cavity operation field exposure device with an optimized structure and integrated functions is urgently needed to realize non-invasive, stable and all-around operation field presentation. The soft tissue retractor comprises an upper lip block and a lower lip block, the two ends of the upper lip block are connected with the two ends of the lower lip block through two V-shaped pieces respectively, and fixing pieces used for fixing the soft tissue retractor are arranged on the two V-shaped pieces; the dentition spreader comprises a rigid frame, the rigid frame comprises an upper plate and a lower plate, the two ends of the upper plate and the two ends of the lower plate are connected through two connecting rods to form a mouth-shaped structure, the upper plate and the lower plate are both arc-shaped plates, a movable upper jaw supporting plate is arranged on the upper plate, and a jaw support or a jaw pad is detachably connected to the upper jaw supporting plate. A tongue blocking piece is arranged on the lower plate in an up-down sliding mode. The oral cavity surgery field of a patient can be simply, effectively and fully exposed, and the good universality effect is achieved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to an oral surgical field exposer. Background Technology

[0002] In the field of oral medicine, surgical field exposure is a core element in ensuring surgical precision and safety. Current mainstream methods rely on mechanical mouth openers or combinations of auxiliary instruments such as retractors and saliva suction devices. While these methods can achieve basic surgical field expansion, they generally suffer from low patient comfort, high risk of soft tissue compression injury, incomplete surgical field coverage, and poor operational coordination. This is especially true in complex surgeries such as wisdom tooth extraction or maxillofacial surgery, where traditional instruments struggle to reliably eliminate blind spots, leading to limited field of vision, reduced surgical efficiency, and increased preparation time and operational complexity due to the use of multiple instruments. Although existing technologies have made some improvements, they have not yet systematically resolved the contradiction between comfort, comprehensiveness, and efficiency. There is an urgent need for a new type of oral surgical field exposer with optimized structure and integrated functions to achieve non-invasive, stable, and comprehensive surgical field presentation. Summary of the Invention

[0003] To address the urgent need in existing technologies for a novel oral surgical field exposer with optimized structure and integrated functions to achieve non-invasive, stable, and comprehensive presentation of the surgical field, this invention provides an oral surgical field exposer.

[0004] The technical solution adopted in this invention is as follows:

[0005] An oral surgical field exposer, comprising:

[0006] Soft tissue retractor: includes an upper lip stop and a lower lip stop, the two ends of the upper lip stop and the two ends of the lower lip stop are respectively connected by two V-shaped members, and the two V-shaped members are provided with fixing members for fixing the soft tissue retractor;

[0007] Dental retractor: includes a rigid frame, which includes an upper plate and a lower plate. The two ends of the upper plate and the two ends of the lower plate are connected by two connecting rods to form an oral structure. Both the upper plate and the lower plate are arc-shaped plates. A movable maxillary support plate is provided on the upper plate. A jaw support or jaw pad is detachably connected to the maxillary support plate. A tongue stop is provided on the lower plate that can slide up and down. The tongue stop includes a tongue guard.

[0008] With this technical solution, the present invention consists of a soft tissue retractor and a dental arch expander, which together achieve the exposure of the surgical field during tooth extraction. The soft tissue retractor is connected to the soft tissue part (lip) of the user's oral cavity to expose the dental arch, while the dental arch expander works in conjunction with the soft tissue retractor to open the upper and lower dental arches, thereby fully exposing the oral surgical field. The maxillary plate can be detachably connected with a jaw bracket or jaw pad to adapt to patients in different situations. Therefore, the present invention achieves both a simple and effective way to fully expose the patient's oral surgical field and a good degree of universality.

[0009] Preferably, the upper plate is provided with an arc-shaped through groove, and the upper plate is provided with several slots along the length direction of the arc-shaped through groove;

[0010] The maxillary support plate is provided with a support rod, which can slide within the arc-shaped through groove, and the support rod is provided with a locking block that cooperates with the bayonet.

[0011] With this technical solution, the support rod can slide upward in the arc-shaped through groove to disengage the locking block from one of the locking slots. When the support rod slides along the length of the arc-shaped through groove, the locking block can be moved to the desired locking slot. Then, by sliding downward, the locking block can be locked into the locking slot. This achieves the adjustment and fixation of the maxillary support plate position, and the maxillary support plate can be fixed at a certain position in the user's mouth as needed.

[0012] Preferably, the maxillary support plate is provided with several connecting block groups, which are arranged in a direction perpendicular to the upper plate, and each connecting block group consists of at least one connecting block. The jaw support and jaw pad are provided with connecting grooves that cooperate with the connecting block groups.

[0013] With this technical solution, the chin support or chin pad can be detachably connected to the maxillary support plate and its position can be adjusted by the cooperation of the connecting block assembly and the connecting groove, so as to meet the needs of users in different situations and make it more universal.

[0014] Preferably, the rigid frame includes a handle, the handle has a hollow cavity, and the lower plate has an opening communicating with the hollow cavity; the tongue stop includes a tongue stop connecting plate, the tongue stop connecting plate includes a vertical plate and a horizontal plate, the tongue stop is connected below the horizontal plate, the vertical plate is inserted into the hollow handle through the opening, and a sliding locking member is provided between the vertical plate and the hollow handle.

[0015] With this technical solution, the tongue guard connecting plate is slidably connected to the rigid frame, and the relative position of the tongue guard connecting plate and the rigid frame can be adjusted to open the patient's upper and lower dentition to different degrees. The sliding locking component fixes the position of the tongue guard connecting plate after it moves.

[0016] Preferably, the sliding locking component includes several limiting grooves provided on the inner wall of the hollow cavity, and the vertical plate is provided with a limiting block that cooperates with the limiting grooves;

[0017] A limiting plate is also provided on the side of the hollow cavity away from the limiting groove. The limiting plate can move laterally within the hollow cavity. Several springs are connected to one side of the limiting plate, and the side of the limiting plate opposite to the spring abuts against the vertical plate.

[0018] After adopting this technical solution, the limiting block can slide to each limiting groove. The limiting plate and the spring cooperate to provide lateral displacement space for the vertical plate, so that the limiting block can smoothly enter or leave the limiting groove, thereby achieving the fixation of the position after sliding.

[0019] Preferably, the upper surface of the tongue block is an arc-shaped surface, the lower surface of the tongue block is provided with an arc-shaped groove, and several saliva suction ports are provided at the edge of the arc-shaped groove. A saliva suction channel communicating with the saliva suction ports is provided inside the tongue block, and a saliva suction interface communicating with the saliva suction channel is provided on the tongue block. The saliva suction interface is detachably connected to a negative pressure component.

[0020] After adopting this technical solution, the lower surface of the tongue guard (the contact surface with the tongue) is provided with an arc-shaped groove so that the tongue guard forms a spoon-shaped structure. The lower surface of the tongue guard is also provided with a saliva suction port. When the saliva suction port is connected to the negative pressure component to provide suction force, the saliva suction function can be performed through the saliva suction port.

[0021] Preferably, the fastener includes two connecting buckles respectively connected to the middle of the two V-shaped parts, and the two connecting buckles are connected to a connecting rope.

[0022] With this technical solution, the connecting buckle connects the connecting rope to the V-shaped part. The connecting buckle is connected to the middle of the V-shaped part, which makes the soft tissue traction device more evenly stressed and ensures the stability of the connection. The soft tissue traction device can be fixed to the user's head through the connecting rope, which is more suitable for patients with Parkinson's disease and other conditions.

[0023] Preferably, a corner silicone pad is provided between the connecting buckle and the V-shaped part.

[0024] With this technical solution, the corner of the soft tissue traction device is wrapped in a silicone pad at the corner of the mouth, which prevents excessive pressure on the corner of the mouth and increases friction, making it less likely to slip off.

[0025] Preferably, the V-shaped part is made of medical-grade PVC material with an elongation at break of 300%-600% and a notched impact strength of 5-15 kJ / m² at room temperature.

[0026] With this technical solution, the material of the soft tissue traction device can preferably be a plastic material with a certain degree of toughness, which can be used and discarded immediately.

[0027] Preferably, the jaw pad includes a jaw pad base with an occlusal groove that mates with teeth, and the jaw support includes a jaw support base with a support groove that mates with gums.

[0028] With this technology, dental retractors can be divided into two types, "jaw support" and "jaw pad," depending on whether the patient has teeth, and can be installed as needed.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0030] 1. This invention consists of a soft tissue retractor and a dental arch expander, which together achieve surgical field exposure during tooth extraction. The soft tissue retractor is connected to the user's oral soft tissue (lips) to expose the dental arch, while the dental arch expander works in conjunction with the soft tissue retractor to open the upper and lower dental arches, thereby fully exposing the oral surgical field. The maxillary plate can be detachably connected to a jaw support or jaw pad to adapt to patients in different situations. Therefore, this invention achieves both a simple and effective way to fully expose the patient's oral surgical field and a good degree of universality.

[0031] 2. The tongue guard connecting plate of the present invention is slidably connected to the rigid frame, and the relative position of the tongue guard connecting plate and the rigid frame can be adjusted to open the patient's upper and lower teeth to different degrees. The sliding locking member fixes the position of the tongue guard connecting plate after it moves.

[0032] 3. The present invention enables detachable connection and position adjustment of the jaw support or jaw pad with the maxillary support plate through the cooperation of the connecting block assembly and the connecting groove, so as to meet the needs of users in different situations and has greater versatility.

[0033] 4. The lower surface of the tongue guard of the present invention is also provided with a saliva suction port. When the saliva suction port is connected to the negative pressure component to provide suction force, the saliva suction function can be performed through the saliva suction port. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a dental arch expander (occlusal pad, and the handle is not fully shown) in one embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of the tongue stop structure in one embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the limiting plate in one embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of the limiting block and the limiting groove in one embodiment of the present invention;

[0038] Figure 5This is a schematic diagram of the jaw support structure in one embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the front structure of the soft tissue traction device in one embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the side structure of the soft tissue traction device in one embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of the structure of the silicone corner pad in one embodiment of the present invention;

[0042] Figure 9 This is a schematic diagram of the front structure of the invention during use;

[0043] Figure 10 This is a schematic diagram of the oblique side of the present invention during use;

[0044] Figure 11 This is a side view of the structure when the present invention is in use;

[0045] Among them, 101-upper plate, 102-lower plate, 103-connecting rod, 104-handle, 201-vertical plate, 202-horizontal plate, 203-saliva suction interface, 204-tongue stop, 205-arc groove, 206-saliva suction port, 207-limiting plate, 208-spring, 209-limiting block, 210-limiting groove, 301-arc through groove, 302-bayonet, 303-bayonet block, 304-support rod, 305-maxillary support plate, 401-connecting block, 402-connecting groove, 501-jaw pad base, 502-occlusal groove, 503-jaw support base, 504-support groove, 6-V-shaped piece, 7-upper lip stop, 8-lower lip stop, 9-connecting buckle, 10-corner silicone soft pad. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0047] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] like Figure 1-11 As shown, an oral surgical field exposer includes:

[0049] Soft tissue retractor: includes an upper lip guard 7 and a lower lip guard 8. In this embodiment, the upper lip guard 7 and the lower lip guard 8 are approximately 3cm long and 1cm high; Figure 6-7 As shown, both the upper lip guard 7 and the lower lip guard 8 are provided with arc-shaped grooves that match the size and shape of the human lip. The user's upper and lower lips can be placed in the upper lip guard 7 and the lower lip guard 8 respectively and then pulled. The two ends of the upper lip guard 7 and the two ends of the lower lip guard 8 are connected by two V-shaped parts 6. The V-shaped parts are made of medical-grade PVC material with an elongation at break of 300%-600% and a notched impact strength of 5-15 kJ / m² at room temperature. The angle of the V-shaped parts 6 is about 125-150° and the length is about 3cm. The function of the V-shaped parts 6 is not only to connect the upper lip guard 7 and the lower lip guard 8, but its V-shaped structure also needs to provide support for the lips. Therefore, the V-shaped parts 6 need to have a certain degree of hardness and toughness. The two V-shaped parts 6 are provided with fixing parts for fixing the soft tissue traction device to the user's head. The specific fixing parts are connected at the turning point of the V-shaped parts 6 to provide a stable connection effect.

[0050] Tooth retractor: such as Figure 1As shown, it includes a rigid frame, approximately 8cm in length and 6cm in width. The rigid frame needs to provide primary support for the opening of the dental arch, therefore it requires sufficient strength. In this embodiment, the rigid frame is made of high-strength stainless steel. The rigid frame includes an upper plate 101 and a lower plate 102. The two ends of the upper plate 101 and the two ends of the lower plate 102 are connected by two connecting rods 103 to form a mouth-shaped structure. It should be noted that the mouth-shaped structure is not planar; to fit snugly against the dental arch, its two ends should be bent towards the center. Both the upper plate 101 and the lower plate 102 are curved plates. A movable maxillary support plate 305 is provided on the upper plate 101. A jaw support or jaw pad is detachably connected to the maxillary support plate 305. The jaw support and jaw pad are approximately 1 cm high and approximately 1.5 cm long in a top view. In this embodiment, both the jaw support and jaw pad are made of medical-grade silicone material, and the choice of which jaw support or jaw pad to use depends on whether the user has teeth. A tongue stop is slidably mounted on the lower plate 102. The tongue stop includes a tongue guard 204, which is approximately 4 cm long and 3 cm wide. The jaw support or jaw pad supports the upper part of the oral cavity, while the tongue stop supports the lower part. The tongue stop can slide up and down on the lower plate 102, thus changing the distance between the upper and lower support structures, thereby allowing the oral cavity to be opened to different degrees. In this embodiment, the jaw pad includes a jaw pad base 501, on which an occlusal groove 502 is provided to mate with teeth. The jaw support includes a jaw support base 503, on which a support groove 504 is provided to mate with gums. The occlusal groove 502 and the support groove 504 are approximately 0.5 cm wide.

[0051] like Figure 9-11 As shown, the method of using this invention is as follows:

[0052] Place the soft tissue retractor inside the mouth, with the upper lip and lower lip positioned in the upper lip block 7 and lower lip block 8 respectively. Then, connect the soft tissue retractor to the patient's head using a fixation device.

[0053] Choose a jaw support or jaw pad depending on whether the patient has teeth. Connect the jaw support or jaw pad to the maxillary support plate 305. As needed, connect the maxillary support plate 305 to the upper plate 101 at a suitable position. Then, place the rigid frame in the patient's mouth. Taking the jaw pad as an example, place the patient's teeth in the jaw pad. Then, according to the required opening degree, slide the tongue stop relative to the lower plate 102 until the patient's mouth is opened to the required size, and the use of this device is completed.

[0054] In this embodiment, the upper plate 101 is provided with an arc-shaped through groove 301, which extends vertically through the upper plate 101 and has the same curvature as the upper plate 101. Several slots 302 are provided on the upper plate 101 along the length of the arc-shaped through groove 301, such as... Figure 1As shown, in this embodiment, each bayonet 302 is divided into left and right parts, and several bayonet openings are evenly arranged at equal intervals along the length direction of the arc-shaped through groove 301. In this embodiment, the distance between two adjacent bayonet openings is 1cm.

[0055] A support rod 304 is provided on the maxillary support plate 305. In this embodiment, the support rod 304 is cylindrical, and its diameter is smaller than the width of the arc-shaped through groove 301. The support rod 304 can slide left and right and up and down within the arc-shaped through groove 301. A locking block 303 that cooperates with the locking slot 302 is fixedly provided on the support rod 304. Figure 1 As shown, the shape of the locking block 303 matches the shape of the locking slot 302, and its left and right ends can be respectively locked into the left and right parts of the locking slot 302. In this embodiment, the support rod 304 can slide upward in the arc-shaped through groove 301 to disengage the locking block 303 from one of the locking slots 302. When the support rod 304 slides along the length of the arc-shaped through groove 301, the locking block 303 can be moved to the desired locking slot 302. Then, by sliding the support rod 304 downward, the locking block 303 can be locked into the locking slot 302. This achieves the adjustable and fixed position of the maxillary support plate 305, and the maxillary support plate 305 can be fixed at a certain position in the user's mouth as needed.

[0056] In this embodiment, the maxillary support plate 305 is provided with several connecting block groups, such as... Figure 1 As shown, this embodiment includes three connecting block groups. The spacing between adjacent connecting block groups is 0.5 cm. The three connecting block groups are arranged perpendicular to the upper plate 101, and each connecting block group consists of two connecting blocks 401. The jaw support and jaw pad are provided with connecting grooves 402 that mate with the connecting block groups. In this embodiment, the connecting grooves 402 on the jaw support or jaw pad can be connected to any group of connecting blocks as needed, so that the position of the jaw support and jaw pad on the maxillary support plate 305 is adjustable. In other embodiments, the connecting blocks 401 can be provided on the jaw support and jaw pad, while the jaw support plate 305 can be provided with several connecting groove groups. Similarly, other detachable connection methods can also be used.

[0057] In this embodiment, the rigid frame includes a handle 104, the length of which can be set as needed. A hollow chamber is provided within the handle 104, and an opening communicating with the hollow chamber is provided on the lower plate 102. The tongue stop includes a tongue stop connecting plate, which includes a vertical plate 201 and a horizontal plate 202. In this embodiment, the vertical plate 201 is perpendicular to the horizontal plate 202, and the length of the horizontal plate 202 is less than the length of the vertical plate 201. The tongue stop 204 is connected below the horizontal plate 202. The vertical plate 201 is inserted into the hollow handle 104 through the opening, and a sliding locking element is provided between the vertical plate 201 and the hollow handle 104. In this embodiment, the tongue stop connecting plate is slidably connected to the rigid frame, allowing adjustment of the relative position between the tongue stop connecting plate and the rigid frame to open the patient's upper and lower dentition to different degrees. The sliding locking element fixes the position of the tongue stop connecting plate after it has moved. The vertical plate 201 slides within the hollow cavity of the handle 104, effectively saving space.

[0058] In this embodiment, as Figure 3-4 As shown, the sliding locking component includes several limiting grooves 210 disposed on the inner wall of the hollow cavity, such as... Figure 1 As shown, several limiting grooves 210 are evenly spaced along the length of the handle 104, and the vertical plate 201 is provided with limiting blocks 209 that cooperate with the limiting grooves 210. In this embodiment, the limiting grooves 210 all penetrate the side wall of the handle 104, so that the limiting blocks 209 can be pushed into the hollow cavity from the outside, thereby allowing the limiting blocks 209 to disengage from the limiting grooves 210 and realize the vertical plate 201 to slide up and down. In other embodiments, if the limiting grooves 210 do not penetrate the side wall of the handle 104, the limiting blocks 209 can also be disengaged from the limiting grooves 210 by pushing the vertical plate 201. In this embodiment, in order to facilitate the entry or exit of the limiting blocks 209 from the limiting grooves 210, the limiting blocks 209 are provided with a sloping surface.

[0059] A limiting plate 207 is also provided on the side of the hollow cavity away from the limiting groove 210. The limiting plate 207 can move laterally within the hollow cavity. Several springs 208 are connected to one side of the limiting plate 207, and the side of the limiting plate 207 opposite to the springs 208 abuts against the vertical plate 201. It should be noted that the width of the opening on the lower plate 102 and the width of the hollow cavity should be greater than the total thickness of the limiting plate 207 and the vertical plate 201, so that the limiting plate 207 and the vertical plate 201 can move laterally; for example Figure 3As shown, in this embodiment, several springs 208 are provided, and the springs 208 are evenly arranged in two rows on the side of the limiting plate 207. The springs 208 can provide a lateral restoring force to the limiting plate 207, so that the moved limiting block 209 can be inserted into the new limiting groove 210. The length of the limiting plate 207 can be matched with the length of the hollow cavity to limit its vertical movement. The springs 208 can be connected to the side wall of the hollow cavity or not.

[0060] In this embodiment, as Figure 2 As shown, the upper surface of the tongue guard 204 is arc-shaped to improve comfort. The lower surface of the tongue guard 204 has an arc-shaped groove 205 with a depth of approximately 0.5 cm. Several saliva suction ports 206 are provided at the edge of the arc-shaped groove 205. A saliva suction channel communicating with the saliva suction ports 206 is provided inside the tongue guard 204. A saliva suction interface 203 communicating with the saliva suction channel is provided on the tongue guard 204. A negative pressure component, such as a negative pressure pump, is detachably connected to the saliva suction interface 203 via a pipe. The detachable connection method can be selected as needed, such as a threaded connection. The arc-shaped groove 205 on the lower surface of the tongue guard 204 (the contact surface with the tongue) forms a spoon-shaped structure, and the saliva suction ports 206 on the lower surface of the tongue guard allow for saliva suction.

[0061] In this embodiment, the fixing component as shown in the figure includes two connecting buckles 9 respectively connected to the middle of the two V-shaped parts 6, and the two connecting buckles 9 are connected to a connecting rope. In this embodiment, the connecting rope is an elastic rope. The connecting buckles 9 connect the connecting rope to the V-shaped parts 6. The connecting buckles are connected to the middle of the V-shaped parts 6, which makes the soft tissue traction device more evenly stressed and ensures the stability of the connection. The soft tissue traction device can be fixed to the user's head by the connecting rope, which is more suitable for patients with Parkinson's disease and other conditions.

[0062] In this embodiment, as Figure 8 As shown, a corner silicone pad 10 is also provided between the connecting buckle 9 and the V-shaped member 6. In this embodiment, the corner silicone pad 10 and the V-shaped member 6 are movably connected, and the corner silicone pad 10 and the connecting buckle 9 are also movably connected. The corner silicone pad 10 is provided with a snap-fit ​​groove and a side opening communicating with the snap-fit ​​groove. The corner silicone pad 10 can be snapped onto the V-shaped member 6 through the side opening, and the two are connected by friction, and their positions are relatively fixed. The corner silicone pad 10 is also provided with a connection port, and the connecting buckle 9 is provided with a curved part for connecting the connection port. In this embodiment, the corner silicone pad 10 contacts the corner of the patient's mouth to prevent excessive pressure on the corner of the mouth and increase friction, making it less likely to slip off. In other embodiments, the contact surface between the corner silicone pad 10 and the patient can also be provided with anti-slip texture.

[0063] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. An oral surgical field exposer, characterized in that: include: Soft tissue traction device: includes an upper lip stop (7) and a lower lip stop (8). The two ends of the upper lip stop (7) and the two ends of the lower lip stop (8) are respectively connected by two V-shaped pieces (6). The two V-shaped pieces (6) are provided with fixing members for fixing the soft tissue traction device. Dental retractor: includes a rigid frame, the rigid frame including an upper plate (101) and a lower plate (102), the two ends of the upper plate (101) and the two ends of the lower plate (102) are connected by two connecting rods (103) to form an oral structure, the upper plate (101) and the lower plate (102) are both arc-shaped plates, the upper plate (101) is provided with a movable maxillary support plate (305), the maxillary support plate (305) is detachably connected with a jaw support or jaw pad, the lower plate (102) is provided with a tongue stop that can slide up and down, the tongue stop includes a tongue stop (204).

2. The oral surgical field exposer according to claim 1, characterized in that: The upper plate (101) is provided with an arc-shaped through groove (301), and the upper plate (101) is provided with several slots (302) along the length direction of the arc-shaped through groove (301). The maxillary support plate (305) is provided with a support rod (304), which can slide in the arc-shaped through groove (301), and the support rod (304) is provided with a locking block (303) that cooperates with the locking slot (302).

3. The oral surgical field exposer according to claim 1, characterized in that: The maxillary support plate (305) is provided with several connecting block groups, which are arranged in a direction perpendicular to the upper plate (101), and each connecting block group consists of at least one connecting block (401). The jaw support and jaw pad are provided with connecting grooves (402) that cooperate with the connecting block groups.

4. The oral surgical field exposer according to claim 1, characterized in that: The rigid frame includes a handle (104), which has a hollow cavity. The lower plate (102) has an opening communicating with the hollow cavity. The tongue stop includes a tongue stop connecting plate, which includes a vertical plate (201) and a horizontal plate (202). The tongue stop (204) is connected below the horizontal plate (202). The vertical plate (201) is inserted into the hollow handle (104) through the opening. A sliding locking element is provided between the vertical plate (201) and the hollow handle (104).

5. The oral surgical field exposer according to claim 4, characterized in that: The sliding locking component includes several limiting grooves (210) provided on the inner wall of the hollow cavity, and the vertical plate (201) is provided with a limiting block (209) that cooperates with the limiting grooves (210). A limiting plate (207) is also provided on the side of the hollow cavity away from the limiting groove (210). The limiting plate (207) can move laterally in the hollow cavity. Several springs (208) are connected to one side of the limiting plate (207). The side of the limiting plate (207) with the springs (208) abuts against the vertical plate (201).

6. The oral surgical field exposer according to claim 1, characterized in that: The upper surface of the tongue guard (204) is an arc-shaped surface, and the lower surface of the tongue guard (204) is provided with an arc-shaped groove (205), and several saliva suction ports (206) are provided at the edge of the arc-shaped groove (205). A saliva suction channel communicating with the saliva suction ports (206) is provided inside the tongue guard (204), and a saliva suction interface (203) communicating with the saliva suction channel is provided on the tongue guard (204). The saliva suction interface (203) is detachably connected to a negative pressure component.

7. The oral surgical field exposer according to claim 1, characterized in that: The fastener includes two connecting buckles (9) respectively connected to the middle of the two V-shaped parts (6), and the two connecting buckles (9) are connected to connecting ropes.

8. The oral surgical field exposer according to claim 7, characterized in that: A corner silicone pad (10) is also provided between the connecting buckle (9) and the V-shaped piece (6).

9. An oral surgical field exposer according to claim 1, characterized in that: The V-shaped part (6) is made of medical-grade PVC material with an elongation at break of 300%-600% and a notched impact strength of 5-15 kJ / m² at room temperature.

10. An oral surgical field exposer according to claim 1, characterized in that: The jaw pad includes a jaw pad (501) base, on which an occlusal groove (502) is provided to cooperate with the teeth, and the jaw support includes a jaw support base (503), on which a support groove (504) is provided to cooperate with the gingiva.

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