Oral cavity four-hand auxiliary operation table

Abstract

The invention discloses an oral cavity four-hand auxiliary operation table which comprises a base, a side plate is fixedly arranged at the upper end of the base, armrest frames are fixedly connected to the upper end of the side plate, a gargling basin is fixedly mounted on the upper surface of the armrest frame on one side, and a mounting rod is fixedly arranged on the upper surface of the armrest frame on one side. An illuminating lamp is mounted at the upper end of the mounting rod, a sliding seat plate is mounted between the two side plates, a push-out hydraulic rod is fixedly mounted on the side surface of the side plate below the seat plate, and one end of the push-out hydraulic rod is fixedly connected with the seat plate. According to the four-hand auxiliary operating table for the oral cavity, through the adaptive supporting mechanism, the distance between the contact position of the hip of a patient and the sitting plate and the lower end of the lying plate is adjusted, and in cooperation with angle adjustment of the lying plate, adults and juveniles with different heights can stably lie on a treatment chair and do not excessively fall down due to the need of adapting to the position of a headrest; and the waist of the patient loses support and feels uncomfortable.

Description

Technical Field

[0001] This invention relates to the field of oral treatment technology, specifically to an oral four-handed auxiliary operating table. Background Technology

[0002] Dental chairs are one of the most basic and essential pieces of medical equipment in dental clinics of all sizes. They directly affect patient comfort and the doctor's treatment outcomes. A dental chair, also known as a dental treatment table, is, as the name suggests, a device and operating table for dentists to perform examinations and treatments. It facilitates the daily work of dentists and allows patients to lie comfortably, relax their minds and bodies, and better cooperate with the dentist to complete the treatment. Dental chairs have undergone continuous updates, integrating aesthetics, multifunctionality, convenience, comfort, and safety. Modern dental chairs are mainly divided into pneumatic and electric types, and many user-friendly auxiliary functions have been added, such as three-way spray guns, saliva suction devices, automatic water dispensers, shadowless lamps, and LCD screens, greatly improving daily treatment efficiency. However, existing dental chairs still have certain problems in actual use. For example, a multifunctional dental chair with publication number "CN115590720A" uses a headrest adjustment mechanism, an upper seat lifting mechanism, and a backrest adjustment mechanism to form a complex seat. The adjustable structure allows for adjustments to the seat angle and backrest curvature. However, in actual clinical practice, the difference in upper body length among adults is not very significant. The concave shape of the seat, which conforms to the human body curve, can cause patients to unconsciously hunch their shoulders, preventing their jaws from fully opening and affecting the doctor's treatment process. Furthermore, doctors often need the assistance of nurses during procedures, but existing operating tables typically use rotating trays for placing instruments. Doctors need to stand up and turn around to retrieve these instruments, which can lead to fatigue from repeated back-and-forth movements. Nurses, who usually stand opposite the doctor to operate aspiration devices, need to move back and forth on the tray to avoid needing to change instruments. They also need to walk quickly when temporarily needing to operate instruments such as washing sets, which is very inconvenient. Summary of the Invention

[0003] The purpose of this invention is to provide a four-handed oral surgery table to solve the problems mentioned in the background art, such as the treatment chair adjustment structure being unfavorable for patients to maintain a suitable treatment angle and the inconvenience caused by the limited equipment distribution when two people operate with four hands at the same time.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a four-handed oral support operating table, comprising a base, a side plate fixedly disposed on the upper end of the base, and an armrest fixedly connected to the upper end of the side plate, a mouthwash basin fixedly mounted on the upper surface of one side of the armrest, and a mounting rod fixedly disposed on the upper surface of the other side of the armrest, with a light installed at the upper end of the mounting rod, a sliding seat plate disposed between the two side plates, and a push-out hydraulic rod fixedly disposed on the side surface of the side plate below the seat plate, with one end of the push-out hydraulic rod fixedly connected to the seat plate, a rotating reclining plate disposed on one end of the side plate, and an adjusting motor fixedly disposed on the side surface of the side plate, with the output shaft of the adjusting motor fixedly connected to the rotating shaft of the reclining plate, a headrest fixedly disposed on the upper end of the reclining plate, and a sliding connecting rod disposed on the lower end of the headrest;

[0005] An adaptive support mechanism, located inside the base, is used to support the gap between the seat and the reclining board when the seat slides.

[0006] The adaptive support mechanism includes: a fixed plate fixedly installed inside the lower end of the base; a mounting plate slidably connected to the side surface of the fixed plate; a support plate slidably connected to the inner surface of the base; a limiting rod penetrating the side surface of the support plate; a positioning motor fixedly installed on the upper end of the mounting plate; an indexing positioning shaft fixedly installed on one end of the output shaft of the positioning motor; a support groove formed on the outer surface of the indexing positioning shaft; and a support hydraulic rod fixedly installed on the inner surface of the lower end of the base.

[0007] An instrument assist mechanism is provided on the side surface of the handrail to facilitate the placement and retrieval of instruments by nurses and doctors;

[0008] The auxiliary mechanism includes: a slide block slidably connected inside one side of the handrail frame; a turntable rotatably mounted on the upper surface of the slide block; a locking rod penetrating the lower surface of the handrail frame; a push switch fixedly mounted on the inner surface of the handrail frame; and an ultraviolet lamp fixedly mounted on the top surface inside the handrail frame.

[0009] A head fixation mechanism, located on the outside of the headrest, is used to stably hold the patient's head.

[0010] The head fixing mechanism includes: a fixing block fixedly connected to the lower end of the connecting rod, an outer ring slidably connected to the outside of the fixing block, an inner gear fixedly connected to the inner surface of the outer ring, a central gear rotatably connected to the lower surface of the headrest, a displacement rod fixedly connected to the outer surface of the central gear, and a contact plate slidably connected to the inner surface of the outer ring.

[0011] Preferably, the upper end of the support plate is arc-shaped, and adjacent support plates fit together, and a spring connects the support plate to the base.

[0012] Preferably, the limiting rod and the mounting plate are slidably connected, and a spring connects the limiting rod and the mounting plate, and the limiting rod and the support plate are configured in a one-to-one correspondence.

[0013] Preferably, the support grooves are evenly distributed on the outer surface of the indexing positioning shaft, and the outer surface of the indexing positioning shaft is in contact with one end of the limiting rod. The opening curvature of different support grooves is different, and the starting ends of the openings of different support grooves are designed to be parallel.

[0014] Preferably, the lever and the handrail are slidably connected, and a spring is connected between the lever and the handrail. The lever is also engaged with the slide block, and the upper surface of the turntable is uniformly provided with placement grooves.

[0015] Preferably, the upper end of the lever is a right-angled trapezoidal design, and the inclined surface of the upper end of the lever faces away from the seat plate.

[0016] Preferably, the outer ring and the inner gear are concentrically arranged, and both the outer ring and the inner gear are semi-circular in design. The two outer rings are rotatably connected, and one end of the two outer rings is fixedly connected by bolts.

[0017] Preferably, both the central gear and the internal gear are bevel gears, and the central gear meshes with the internal gear.

[0018] Preferably, the displacement rod is threadedly connected to the fixed block, and the displacement rod is coaxial with the central gear.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the oral cavity four-handed auxiliary operating table:

[0020] 1. Through the adaptive support mechanism, the contact position between the patient's buttocks and the seat board and the distance between the lower end of the reclining board are adjusted. Combined with the angle adjustment of the reclining board, adults and minors of different heights can lie stably on the treatment chair without excessively slouching due to the need to adapt to the position of the headrest, which would cause the patient's lower back to lose support and become uncomfortable.

[0021] 2. By setting a turntable on one side of the handrail and using a sliding push-out method, doctors can retrieve instruments without turning around during operation. Nurses can rotate the turntable to move used instruments away from the doctor and turn the instruments to be used towards the doctor, making it convenient for doctors to retrieve instruments and also convenient for nurses to clean used instruments and collect medical waste.

[0022] 3. When it is necessary to fix the patient's head, the outer ring is closed and fixed, and the outer ring rotates as a whole. During the rotation, the outer ring can drive the contact plate to gradually reduce the gap between it and the upper surface of the headrest, so as to fix the patient's head by contacting the patient's forehead. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall front sectional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall top sectional structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the overall side sectional structure of the present invention;

[0026] Figure 4 This is a side sectional view of the connection between the mounting plate and the support plate of the present invention.

[0027] Figure 5 This is a schematic diagram of the front sectional view of the headrest and connecting rod connection of the present invention;

[0028] Figure 6 This is a schematic diagram of the side cross-sectional structure of the connection between the outer ring and the internal gear of the present invention;

[0029] Figure 7 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0030] Figure 8 For the present invention Figure 4 Enlarged structural diagram at point B;

[0031] Figure 9 This is a three-dimensional structural diagram of the connection between the indexing positioning shaft and the support groove of the present invention.

[0032] In the diagram: 1. Base; 2. Side panel; 3. Armrest frame; 4. Mouthwash basin; 5. Mounting rod; 6. Lighting light; 7. Seat; 8. Push-out hydraulic rod; 9. Reclining board; 10. Adjustment motor; 11. Headrest; 12. Connecting rod;

[0033] Adaptive support mechanism: 1301, fixed plate; 1302, mounting plate; 1303, support plate; 1304, limit rod; 1305, positioning motor; 1306, indexing positioning shaft; 1307, support groove; 1308, support hydraulic rod;

[0034] Instrument auxiliary mechanisms: 1401, slide; 1402, turntable; 1403, lever; 1404, push switch; 1405, ultraviolet lamp;

[0035] Head fixing mechanism: 1501, fixing block; 1502, outer ring; 1503, internal gear; 1504, central gear; 1505, displacement rod; 1506, contact plate. Detailed Implementation

[0036] 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.

[0037] This application provides a four-handed dental operating table. The four-handed dental operating table adjusts the sitting posture of patients of different heights and lengths through an adaptive support mechanism, facilitates doctors and nurses to pick up and place instruments through an instrument assist mechanism, and quickly fixes the patient's head through a head fixation mechanism.

[0038] The following provides a detailed description of the four-handed dental operating table. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0039] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0040] Please see Figure 1-9 In this embodiment, a four-handed oral cavity assistive operating table is provided, including: a base 1, a side plate 2 fixedly installed on the upper end of the base 1, and an armrest 3 fixedly connected to the upper end of the side plate 2, a mouthwash basin 4 fixedly installed on the upper surface of one armrest 3, an installation rod 5 fixedly installed on the upper surface of one armrest 3, a light 6 installed on the upper end of the installation rod 5, a sliding seat 7 installed between the two side plates 2, and a push-out hydraulic rod 8 fixedly installed on the side surface of the side plate 2 below the seat 7, and one end of the push-out hydraulic rod 8 fixedly connected to the seat 7, a rotating reclining plate 9 installed on one end of the side plate 2, and an adjusting motor 10 fixedly installed on the side surface of the side plate 2, and the output shaft of the adjusting motor 10 fixedly connected to the rotating shaft of the reclining plate 9, a headrest 11 fixedly installed on the upper end of the reclining plate 9, and a sliding connecting rod 12 installed on the lower end of the headrest 11;

[0041] In this embodiment, the four-handed oral support table mainly includes a base 1, side panels 2, armrests 3, a mouthwash basin 4, mounting rods 5, a light 6, a seat 7, a hydraulic push-out rod 8, a reclining board 9, an adjusting motor 10, a headrest 11, a connecting rod 12, an adaptive support mechanism, an instrument assist mechanism, and a head fixation mechanism. The four-handed oral support table provided in this solution uses an adaptive support mechanism to slide and fill the gap between the seat 7 and the reclining board 9, preventing the patient's lower back from losing support when the gap between the seat 7 and the reclining board 9 widens. The patient is uncomfortable sitting. During treatment, the doctor slides the turntable 1402 to pick up and place instruments, and the nurse rotates the turntable 1402 to change instruments. The ultraviolet lamp 1405 is turned on by sliding and squeezing the switch 1404 on the turntable 1402 so that the instruments are disinfected with ultraviolet light while the turntable 1402 is rotating. The patient's head is fixed by rotating the outer ring 1502. When not in use, the outer ring 1502 is rotated by removing the bolts so that the patient can receive treatment comfortably without being affected by the head fixation mechanism.

[0042] In some embodiments, the adaptive support mechanism includes: a fixed plate 1301 fixedly installed inside the lower end of the base 1; a mounting plate 1302 slidably connected to the side surface of the fixed plate 1301; a support plate 1303 slidably connected to the inner surface of the base 1; a limiting rod 1304 penetrating the side surface of the support plate 1303; a positioning motor 1305 fixedly installed on the upper end of the mounting plate 1302; an indexing positioning shaft 1306 fixedly installed at one end of the output shaft of the positioning motor 1305; a support groove 1307 formed on the outer surface of the indexing positioning shaft 1306; and a support hydraulic rod 1308 fixedly installed on the inner surface of the lower end of the base 1. When the patient is tall, the hydraulic rod 8 is activated, causing the reclining board 9 to slide away from the base 1 and the side plate 2. At this time, as the gap between the reclining board 9 and the sitting board 7 increases, the servo... The controller starts the positioning motor 1305 based on the sliding distance of the seat 7, which drives the indexing positioning shaft 1306 to rotate. The indexing positioning shaft 1306 presses the limiting rod 1304 through the support grooves 1307 with different opening degrees. The limiting rod 1304 slides under pressure and engages with the support plate 1303. At this time, the support hydraulic rod 1308 starts and drives the mounting plate 1302 to slide upward relative to the fixed plate 1301. The support plate 1303, which is engaged with the limiting rod 1304, slides upward with the mounting plate 1302 and stretches the spring between it and the base 1 until the upper end of the support plate 1303 slides into the gap between the reclining board 9 and the seat 7 to support the patient's waist. The lighting lamp 6 on the mounting rod 5 illuminates the patient's mouth. The mouthwash basin 4 installed on the armrest frame 3 allows the patient to rinse their mouth. The angle is adjusted by adjusting the motor 10 to drive the reclining board 9 to rotate.

[0043] In some embodiments, the instrument-assisted mechanism includes: a slide 1401 slidably connected inside one side of the handrail 3; a turntable 1402 rotatably mounted on the upper surface of the slide 1401; a lever 1403 penetrating the lower surface of the handrail 3; a push switch 1404 fixedly mounted on the inner surface of the handrail 3; and an ultraviolet lamp 1405 fixedly mounted on the top surface inside the handrail 3. When the instrument is needed, the doctor pulls the turntable 1402, which causes the slide 1401 to slide and press against the inclined surface of the lever 1403. The lever 1403 slides down under pressure, passing over the slide 1401. At this time, the side surface of the turntable 1402 presses against the push switch 1404, activating it. The ultraviolet lamp 1405 is used to disinfect the instruments placed in the slots on the surface of the turntable 1402. After the slide 1401 slides into place, the locking lever 1403 slides upward under the support of the spring and limits the slide 1401 through the vertical surface at the upper end, preventing the slide 1401 from causing the turntable 1402 to slide in the opposite direction. During the process, the nurse prepares and changes instruments through the slots on the turntable 1402 located on the outside of the handrail 3, and the doctor takes and places instruments through the slots on the turntable 1402 located on the inside of the handrail 3. The positions of used instruments and unused instruments are changed by rotating the turntable 1402.

[0044] In some embodiments, the head fixation mechanism includes: a fixing block 1501 fixedly connected to the lower end of the connecting rod 12; an outer ring 1502 slidably connected to the outside of the fixing block 1501; an inner gear 1503 fixedly connected to the inner surface of the outer ring 1502; a central gear 1504 rotatably connected to the lower surface of the headrest 11; a displacement rod 1505 fixedly connected to the outer surface of the central gear 1504; and a contact plate 1506 slidably connected to the inner surface of the outer ring 1502. When it is necessary to fix the patient's head, the outer ring 1502 is rotated so that the two outer rings 1502 are joined together and fixed with bolts. At this time, the two inner gears 1503 form a complete bevel gear, and the patient's forehead is placed between the contact plate 1506 and the headrest 11. Then rotate the outer ring 1502, which drives the inner gear 1503 to rotate. At this time, the fixed block 1501 maintains the stable rotation of the outer ring 1502 through the sliding connection with the outer ring 1502. The inner gear 1503 drives the displacement rod 1505 to rotate through the meshing with the central gear 1504. The displacement rod 1505 is connected to the fixed block 1501 by a thread and the fixed block 1501 is connected to the headrest 11 through the connecting rod 12. This allows the fixed block 1501 to drive the outer ring 1502 to slide downward during the rotation of the outer ring 1502. At this time, grasp the contact plate 1506 so that the contact plate 1506 always remains in the position facing the patient's forehead until the contact plate 1506 contacts the patient's forehead and presses the patient's forehead firmly.

[0045] In some embodiments, the upper end of the support plate 1303 is arc-shaped, and adjacent support plates 1303 are fitted together. A spring is connected between the support plate 1303 and the base 1, so that the support plate 1303 can slide upward through the arc-shaped end to contact the patient's waist for support.

[0046] In some embodiments, the limiting rod 1304 and the mounting plate 1302 are slidably connected, and a spring is connected between the limiting rod 1304 and the mounting plate 1302. The limiting rod 1304 and the support plate 1303 are configured in a one-to-one correspondence, so that the limiting rod 1304 can drive the support plate 1303 to slide upward with the mounting plate 1302 by engaging with the support plate 1303.

[0047] In some embodiments, the support grooves 1307 are evenly distributed on the outer surface of the indexing positioning shaft 1306, and the outer surface of the indexing positioning shaft 1306 is in contact with one end of the limiting rod 1304. The opening curvature of different support grooves 1307 is different, and the opening start ends of different support grooves 1307 are designed to be parallel, so that the indexing positioning shaft 1306 can support the limiting rod 1304 at different positions with different rotation angles, so as to achieve the purpose of inserting an appropriate number of support plates 1303 according to the sliding distance of the seat plate 7.

[0048] In some embodiments, the lever 1403 is slidably connected to the handrail 3, and a spring is connected between the lever 1403 and the handrail 3. The lever 1403 is engaged with the slide block 1401, and the upper surface of the turntable 1402 is evenly provided with placement grooves, so that the turntable 1402 can remain stable and not slide randomly through the engagement of the slide block 1401 and the lever 1403.

[0049] In some embodiments, the upper end of the lever 1403 is designed as a right-angled trapezoid, and the inclined surface of the upper end of the lever 1403 is set away from the seat plate 7, so that the inclined surface of the lever 1403 can slide downward when it is squeezed.

[0050] In some embodiments, the outer ring 1502 and the inner gear 1503 are concentrically arranged, and both the outer ring 1502 and the inner gear 1503 are semi-ring-shaped. The two outer rings 1502 are rotatably connected, and one end of the two outer rings 1502 is fixedly connected by bolts, so that after the two outer rings 1502 are rotated and spliced, the inner gear 1503 can be merged to form a complete bevel gear. When not in use, the patient's head can be placed conveniently by opening the outer ring 1502.

[0051] In some embodiments, both the central gear 1504 and the internal gear 1503 are bevel gears, and the central gear 1504 is meshed with the internal gear 1503, so that the internal gear 1503 can drive the central gear 1504 to rotate.

[0052] In some embodiments, the displacement rod 1505 is threadedly connected to the fixed block 1501, and the displacement rod 1505 is coaxially designed with the central gear 1504, so that when the central gear 1504 rotates, it can drive the displacement rod 1505 to rotate, causing the fixed block 1501 to slide downward.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-handed oral operating table, comprising a base (1), characterized in that: A base (1) is provided with a side plate (2) fixedly installed at the upper end of the base (1), and a handrail (3) is fixedly connected to the upper end of the side plate (2). A mouthwash basin (4) is fixedly installed on the upper surface of one side of the handrail (3), and a mounting rod (5) is fixedly installed on the upper surface of the other side of the handrail (3). A light (6) is installed at the upper end of the mounting rod (5). A sliding seat (7) is installed between the two side plates (2), and the side plate (2) below the seat (7) is... A hydraulic rod (8) is fixedly installed on the surface, and one end of the hydraulic rod (8) is fixedly connected to the seat plate (7). A rotating reclining plate (9) is installed on one end of the side plate (2), and an adjusting motor (10) is fixedly installed on the side surface of the side plate (2). The output shaft of the adjusting motor (10) is fixedly connected to the rotating shaft of the reclining plate (9). A headrest (11) is fixedly installed on the upper end of the reclining plate (9), and a sliding connecting rod (12) is installed on the lower end of the headrest (11). An adaptive support mechanism is provided inside the base (1) to support the gap between the seat (7) and the reclining board (9) when the seat (7) slides. The adaptive support mechanism includes: a fixed plate (1301) fixedly installed inside the lower end of the base (1), a mounting plate (1302) slidably connected to the side surface of the fixed plate (1301), a support plate (1303) slidably connected to the inner surface of the base (1), a limiting rod (1304) penetrating the side surface of the support plate (1303), and a support hydraulic rod (1308) fixedly installed on the inner surface of the lower end of the base (1). Instrument auxiliary mechanism, which is located on the side surface of the handrail (3) to facilitate nurses and doctors in placing and retrieving instruments; The auxiliary mechanism includes: a slide (1401) slidably connected inside the handrail (3) on one side; a turntable (1402) rotatably mounted on the upper surface of the slide (1401); a locking rod (1403) penetrating the lower surface of the handrail (3); a push switch (1404) fixedly mounted on the inner surface of the handrail (3); and an ultraviolet lamp (1405) fixedly mounted on the top surface inside the handrail (3). A head fixation mechanism is located on the outside of the headrest (11) and is used to stably clamp the patient's head. The head fixing mechanism includes: a fixing block (1501) fixedly connected to the lower end of the connecting rod (12), an outer ring (1502) slidably connected to the outside of the fixing block (1501), an inner gear (1503) fixedly connected to the inner surface of the outer ring (1502), a central gear (1504) rotatably connected to the lower surface of the headrest (11), a displacement rod (1505) fixedly connected to the outer surface of the central gear (1504), and a contact plate (1506) slidably connected to the inner surface of the outer ring (1502).

2. The oral cavity four-handed auxiliary operating table according to claim 1, characterized in that: The adaptive support mechanism further includes: a positioning motor (1305) fixedly installed on the upper end of the mounting plate (1302), an indexing positioning shaft (1306) fixedly installed on one end of the output shaft of the positioning motor (1305), and a support groove (1307) formed on the outer surface of the indexing positioning shaft (1306).

3. The oral cavity four-handed auxiliary operating table according to claim 1, characterized in that: The upper end of the support plate (1303) is arc-shaped, and adjacent support plates (1303) fit together. A spring connects the support plate (1303) to the base (1).

4. The oral cavity four-handed auxiliary operating table according to claim 1, characterized in that: The limiting rod (1304) and the mounting plate (1302) are slidably connected, and a spring is connected between the limiting rod (1304) and the mounting plate (1302). The limiting rod (1304) and the support plate (1303) are set in a one-to-one correspondence.

5. The oral cavity four-handed auxiliary operating table according to claim 2, characterized in that: The support grooves (1307) are evenly distributed on the outer surface of the indexing positioning shaft (1306), and the outer surface of the indexing positioning shaft (1306) is in contact with one end of the limiting rod (1304). The opening curvature of different support grooves (1307) is different, and the opening start ends of different support grooves (1307) are designed to be parallel.

6. The oral cavity four-handed auxiliary operating table according to claim 1, characterized in that: The lever (1403) is slidably connected to the handrail (3), and a spring is connected between the lever (1403) and the handrail (3). The lever (1403) is engaged with the slide (1401), and the upper surface of the turntable (1402) is uniformly provided with placement grooves.

7. The oral cavity four-handed auxiliary operating table according to claim 1, characterized in that: The upper end of the lever (1403) is designed as a right-angled trapezoid, and the upper inclined surface of the lever (1403) faces away from the seat plate (7).

8. The oral cavity four-handed auxiliary operating table according to claim 1, characterized in that: The outer ring (1502) and the inner gear (1503) are concentrically arranged, and both the outer ring (1502) and the inner gear (1503) are semi-ring-shaped. The two outer rings (1502) are rotatably connected, and one end of the two outer rings (1502) is fixedly connected by bolts.

9. A four-handed oral surgery table according to claim 1, characterized in that: Both the central gear (1504) and the internal gear (1503) are bevel gears, and the central gear (1504) and the internal gear (1503) are meshed together.

10. A four-handed oral surgery table according to claim 1, characterized in that: The displacement rod (1505) is threadedly connected to the fixed block (1501), and the displacement rod (1505) is coaxially designed with the central gear (1504).

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