Saliva pump for alveolar surgery

Abstract

The invention discloses a saliva aspirator for alveolar surgery, relates to the technical field of medical auxiliary appliances, and aims to solve the problem that in the extraction of impacted teeth or other complex teeth, fine tooth fragments easily block a saliva aspirating tube; a patient cannot keep an effective mouth opening degree, so that a doctor has a poor visual field during an operation, and the operation time is prolonged; when a doctor uses a mobile phone to operate, the tongue edge or buccal mucosa soft tissue is easily damaged. The saliva pump comprises an oral cavity expansion structure, the oral cavity expansion structure comprises a gear, a first rack and a second rack, the gear, the first rack and the second rack are meshed with each other, the gear can drive the first rack and the second rack on the two sides to move reversely, one end of each rack is provided with a tooth spreader, and the end of each second rack is provided with a buccal side stopper; and the saliva suction tube is arranged between the tooth spreader and the buccal stopper. The device can prevent the cheek side of a patient from being injured, guarantee the visual field during operation, improve the saliva suction efficiency and prevent the saliva suction pipe from being blocked to affect the operation process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary appliances, and particularly relates to a saliva aspirator for alveolar surgery. Background Art

[0002] Alveolar surgery mainly studies the prevention and treatment of oral hard and soft tissues and related diseases, and tooth extraction is its main business scope. In tooth (especially impacted teeth and complex teeth) extraction, the following problems exist:

[0003] First of all, the stimulation of the patient's oral cavity by instruments will cause the upper and lower dental arches to reflexively bite and close. Some patients cannot maintain an effective mouth opening throughout the operation due to reasons such as small mouth opening, temporomandibular joint diseases, inability to actively cooperate, and long operation time, resulting in poor surgical vision, affecting the doctor's operation, and prolonging the operation time.

[0004] Secondly, when using a high-speed handpiece to remove bone and divide teeth, the high-speed handpiece sprays cooling water to reduce the high-temperature damage to the teeth and local tissues during the operation of the high-speed handpiece. A large amount of cooling water, dental tissue debris, blood, and oral secretions accumulate in the patient's oral cavity and need to be sucked out in time with a saliva suction tube. Conventional saliva suction tubes are extremely easy to be blocked by tooth fragments, resulting in weakened saliva suction ability or ineffective saliva suction, which affects the surgical process and prolongs the operation time.

[0005] Thirdly, the high-speed handpiece is extremely easy to damage the soft tissues of the tongue edge or buccal mucosa during the process of bone removal and tooth division, causing additional damage to the patient, reducing the patient's medical experience, and even triggering medical disputes. Summary of the Invention

[0006] Aiming at the above existing problems, the present invention aims to provide a saliva aspirator for alveolar surgery, which can avoid injury to the buccal side of the patient, ensure the intraoperative vision, improve the saliva suction efficiency at the same time, and avoid the blockage of the saliva suction tube from affecting the surgical process.

[0007] The main idea of the technical solution adopted by the present invention: By designing a tooth spreader and a buccal baffle arranged oppositely, which respectively correspond to unilateral teeth and the cheek on the other side, the oral cavity can be expanded while ensuring the surgical field of view; the tooth spreader and the buccal blocker are connected by a gear-rack structure, and when the gear rotates, it can drive the racks on both sides to move towards each other to expand the patient's oral cavity, and the rotation of the gear is realized by a pre-set clockwork, and the process is slow to facilitate the patient's adaptation; one rack is connected to the upper and lower occluders through two hinge rods, and when the rack moves outwards, it drives the occluder to open, further expanding the distance between the upper and lower teeth; the buccal blocker includes a sliding sleeve, an upper baffle and a lower baffle that are slidably connected, and the two occluders are respectively connected to the upper baffle and the lower baffle through connecting rods. When the occluder opens, it can drive the upper baffle and the lower baffle to move to both sides, expanding the protection area of the cheek side; a rotary blade is arranged inside the saliva suction tube, which can crush debris to avoid blocking the saliva suction tube, and at the same time, when the rotary blade rotates, it drives the side wall scraper to clean the nearby solid or viscous impurities.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] A saliva suction device for alveolar surgery, including an oral cavity expansion structure, including a gear and a first rack and a second rack that are meshed with each other, the gear can drive the first rack and the second rack on both sides to move in opposite directions, a tooth spreader is arranged at the end of the first rack, and a buccal blocker is arranged at the end of the second rack;

[0010] A saliva suction tube is arranged between the tooth spreader and the buccal blocker.

[0011] Through the above technical solution, further: the tooth spreader includes an upper occluder and a lower occluder that are hinged, the upper occluder and the lower occluder are respectively rotatably connected with hinge rods, and the free ends of the two hinge rods are both connected to the first rack.

[0012] Through the above technical solution, further: the buccal blocker includes a sliding sleeve, an upper baffle and a lower baffle that are slidably connected in the sliding sleeve, and the upper baffle and the lower baffle are arranged in a staggered manner.

[0013] Through the above technical solution, further: the first rack and the second rack are arranged on both sides of the gear and are parallel to each other, and a clockwork structure is arranged on the gear.

[0014] Through the above technical solution, further: the clockwork structure includes a spiral piece and a rotating cover arranged above the gear, a central shaft is connected between the rotating cover and the gear, an arc piece is arranged outside the central shaft, one end of the spiral piece is fixedly connected to the inner side of the arc piece, and the other end is connected to the inner wall of the rotating cover.

[0015] With the above technical solutions, further: a tongue side plate is provided at the other end of the first rack.

[0016] With the above technical solutions, further: a first connecting rod is provided between the upper occluder and the upper baffle, and a second connecting rod is provided between the lower occluder and the lower baffle.

[0017] With the above technical solutions, further: a one-way filter screen is provided inside the saliva suction tube, the filter screen is connected with a rotary blade through a connecting shaft, and a side wall scraper is also provided on the connecting shaft.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. By designing the relatively arranged tooth spreader and buccal baffle, which respectively correspond to the unilateral teeth and the buccal part on the other side, the oral cavity can be spread while ensuring the surgical field of view.

[0020] 2. The tooth spreader and the buccal blocker are connected by a gear-rack structure. When the gear rotates, it can drive the two racks on both sides to move towards each other to spread the patient's oral cavity, and the rotation of the gear is realized by a pre-set spring, and the process is slow and convenient for the patient to adapt.

[0021] 3. The first rack is connected to the upper and lower occluders through two articulated rods. When the first rack moves outwards, it drives the occluders to open, further spreading the distance between the upper and lower teeth.

[0022] 4. The buccal blocker includes a sliding sleeve, an upper baffle and a lower baffle which are slidably connected. The two occluders are respectively connected to the upper baffle and the lower baffle through connecting rods. When the occluders open, they can drive the upper baffle and the lower baffle to move to both sides, expanding the protection area of the buccal side.

[0023] 5. A rotary blade is provided inside the saliva suction tube, which can crush the debris to avoid blocking the saliva suction tube. At the same time, when the rotary blade rotates, it drives the side wall scraper to clean the nearby solid or viscous impurities.

[0024] 6. When the gear rotates, it drives the first rack and the second rack to move in the opposite direction. The first rack drives the articulated rods to open upwards and downwards, and the angle between the two articulated rods becomes larger, driving the upper occluder and the lower occluder to open, playing a supporting role for the patient's teeth. When the upper occluder and the lower occluder open, they can drive the upper baffle and the lower baffle to move to both sides through the connecting rods, expanding the protection area of the buccal side. When the first rack moves, it can also drive the tongue side plate to move towards the side close to the occluder at the same time, strengthening the fixation of the tongue. At the same time, the second rack drives the sliding sleeve to move outwards to spread the patient's oral cavity, and the upper baffle and the lower baffle are subjected to the pulling force of the connecting rods, and the overall shape is "C", which conforms to the shape of the human cheek. Through the cooperation of the gear, the first rack and the second rack, the opening and closing of the tooth spreader, the expansion of the buccal blocker, and the movement of the tongue side plate are linked together, so as to achieve the purpose of stably spreading the oral cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 is a three-dimensional structural schematic diagram of the present invention with the saliva suction tube removed;

[0027] Figure 3 is Figure 2 a side view schematic diagram;

[0028] Figure 4 is Figure 3 a schematic diagram of a cross-section along A-A;

[0029] Figure 5 is a top view schematic diagram of the buccal blocker;

[0030] Figure 6 is Figure 5 a schematic diagram of a cross-section along B-B;

[0031] Figure 7 is a three-dimensional structural schematic diagram of the spiral piece and the rotating cover of the present invention;

[0032] Figure 8 is a three-dimensional structural schematic diagram of the structure of the first rack, the second rack, the gear, and the spring of the present invention;

[0033] Figure 9 is Figure 8 a schematic diagram of a cross-section along C-C;

[0034] Figure 10 is a three-dimensional structural schematic diagram of the buccal blocker of the present invention;

[0035] Figure 11 is a three-dimensional structural schematic diagram of the gear connection relationship of the present invention;

[0036] Figure 12 is Figure 11 a schematic diagram of an enlarged partial structure;

[0037] Figure 13 is a three-dimensional structural schematic diagram of the saliva suction tube of the present invention;

[0038] Figure 14 is a three-dimensional structural schematic diagram of the interior of the saliva suction tube of the present invention;

[0039] Figure 15 is Figure 14 a schematic diagram of an enlarged partial structure;

[0040] Wherein: 1. Tooth spreader; 101. Upper occluder; 102. Lower occluder; 103. Tooth receiving groove; 104. Hinge;

[0041] 2. Hinge rod;

[0042] 3. Rack 1; 301. Upper support plate; 302. Lower support plate; 303. Connecting rod; 304. Tongue side plate;

[0043] 4. Buccal blocker; 401. Sliding sleeve; 401-1. First sliding groove; 401-2. Second sliding groove; 401-3. Sliding hole; 402. Upper baffle; 402-1. First slider; 403. Lower baffle; 403-1. Second slider;

[0044] 5. First connecting rod;

[0045] 6. Second connecting rod;

[0046] 7. Rack 2; 701. Upper plate; 702. Lower plate; 703. Guide rod;

[0047] 8. Gear;

[0048] 9. Spring structure; 901. Spiral piece; 902. Rotating cover; 903. Central shaft; 904. Arc piece;

[0049] 10. Saliva suction tube; 1001. Suction head; 1002. Connecting tube; 1003. Fixed seat; 1004. Filter screen; 1005. Rotating blade; 1006. Motor; 1007. Side wall scraper; 1008. Suction tube; 1009. Support rod; 1010. Negative pressure suction device; 1011. Discharge tube. Detailed implementation manners

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0051] The inventors' research found that during the extraction of impacted teeth or other complex teeth, some patients have a small mouth opening, temporomandibular joint diseases, or cannot maintain an effective mouth opening due to a long operation time, etc., resulting in poor intraoperative vision for doctors, affecting doctors' operations, and prolonging the operation time. In addition, when using a high-speed handpiece to remove bone and divide teeth, it is necessary to timely suck out the cooling water, blood, saliva, tooth tissue, and debris in the oral cavity. Conventional saliva suction tubes are extremely easy to be blocked by tooth fragments, resulting in weakened saliva suction ability or ineffective saliva suction, affecting the operation process; at the same time, during the tooth division process with a high-speed handpiece, it is extremely easy to damage the soft tissues of the tongue edge or buccal mucosa, causing additional damage to the patient, reducing the patient's medical experience, and even triggering medical disputes.

[0052] Based on the above findings, the present application proposes a saliva aspirator for alveolar surgery. By designing the relatively arranged tooth spreader 1 and buccal blocker 4, which respectively correspond to the unilateral teeth and the buccal part on the other side, it can expand the oral cavity while ensuring the surgical field of view. The tooth spreader 1 and the buccal blocker 4 are connected by a gear-rack structure. When the gear 8 rotates, it can drive the racks on both sides to move towards each other to expand the patient's oral cavity, and the rotation of the gear 8 is realized by a pre-set spring, and the process is slow to facilitate the patient's adaptation. The first rack 3 is connected to the upper occluder 101 and the lower occluder 102 respectively through two hinge rods 2. When the first rack 3 moves outwards, it drives the upper occluder 101 and the lower occluder 102 to open, further expanding the distance between the upper and lower teeth. The buccal blocker 4 includes a sliding sleeve 401, an upper baffle 402 and a lower baffle 403 that are slidably connected. The two occluders are connected to the upper baffle 402 and the lower baffle 403 respectively through a first connecting rod 5 and a second connecting rod 6. When the upper occluder 101 and the lower occluder 102 open, it can drive the upper baffle 402 and the lower baffle 403 to move to both sides, expanding the protection area of the buccal side. A rotary blade 1005 is arranged inside the saliva suction tube, which can crush debris to avoid blocking the saliva suction tube 10. At the same time, when the rotary blade 1005 rotates, it drives the side wall scraper 1007 to clean the nearby solid or viscous impurities.

[0053] Embodiment 1

[0054] Refer to Figure 1 - Figure 15 In this application, a saliva aspirator for alveolar surgery is disclosed, which includes a tooth spreader 1. The tooth spreader 1 includes an articulated upper occluder 101 and a lower occluder 102. Both the upper occluder 101 and the lower occluder 102 are arc-shaped structures, with the same shape and symmetrically arranged up and down. A tooth receiving groove 103 is provided on the side away from each other for placing the patient's teeth, and a hinge 104 is provided on the side to rotatably connect the upper occluder 101 and the lower occluder 102.

[0055] Hinge rods 2 are rotatably connected to the inner sides of the upper occluder 101 and the lower occluder 102 respectively. The other ends of the two hinge rods 2 are connected to the first rack 3. Upper support plates 301 and lower support plates 302 are respectively provided on the upper and lower sides of the first rack 3. The other end of the hinge rod 2 connected to the upper occluder 101 is rotatably connected to the upper support plate 301; the other end of the hinge rod 2 connected to the lower occluder 102 is rotatably connected to the lower support plate 302. A connecting rod 303 is provided between the upper support plate 301 and the lower support plate 302, and a row of teeth is provided on one side of the connecting rod 303.

[0056] A buccal blocker 4 is provided on the opposite side of the tooth spreader 1 for supporting and protecting the patient's cheek.

[0057] The buccal blocker 4 includes a sliding sleeve 401. The sliding sleeve 401 is an arc-shaped structure, longitudinally provided with a long strip-shaped sliding hole 401-3. Inside the sliding sleeve 401, a first sliding groove 401-1 and a second sliding groove 401-2 are provided at the central position. And the first sliding groove 401-1 is located on the arc inner side of the sliding sleeve 401, and the second sliding groove 401-2 is located on the arc outer side of the sliding sleeve 401.

[0058] An upper baffle 402 and a lower baffle 403 are slidably connected in the sliding hole 401-3. And on the sides of the upper baffle 402 and the lower baffle 403 away from each other, a first slider 402-1 and a second slider 403-1 are integrally connected respectively. When the upper baffle 402 moves up and down, the first slider 402-1 slides in the first sliding groove 401-1 to prevent the upper baffle 402 from detaching from the sliding sleeve 401. When the lower baffle 403 moves up and down, the second slider 403-1 slides in the second sliding groove 401-2 to prevent the lower baffle 403 from detaching from the sliding sleeve 401. A first spring is connected to the upper side of the first slider 402-1. The first spring slides in the first sliding groove 401-1, so that in the initial state, the first spring stretches and the upper baffle 402 is located at a position close to the lower baffle 403. A second spring is connected to the lower side of the second slider 403-1. The second spring slides in the second sliding groove 401-2, so that in the initial state, the second spring stretches and the lower baffle 403 will not sag too much.

[0059] When the upper baffle 402 and the lower baffle 403 slide, they do not interfere with each other. The outer side of the upper baffle 402 is close to the inner side of the lower baffle 403, and their movement paths are parallel to each other but not in the same plane. The upper baffle 402 and the lower baffle 403 are made of an elastic material that can change shape.

[0060] A first connecting rod 5 is provided between the upper occluder 101 and the upper baffle 402, and a second connecting rod 6 is provided between the lower occluder 102 and the lower baffle 403. When the occluder opens, it can drive the upper baffle 402 and the lower baffle 403 to move to both sides, expanding the protection area for the buccal side.

[0061] One side of the sliding sleeve 401 is fixedly connected with a second rack 7. On the upper and lower sides of the second rack 7, an upper plate 701 and a lower plate 702 are integrally connected respectively. A guide rod 703 is provided between the upper plate 701 and the lower plate 702. One side of the guide rod 703 is provided with a row of teeth. One end of the guide rod 703 is fixedly connected with the sliding sleeve 401, the upper plate 701 and the lower plate 702 are arranged at the other end of the guide rod 703, and the teeth are located within the range of the upper plate 701 and the lower plate 702. The teeth of the second rack 7 are arranged opposite to the teeth of the first rack 3, and a gear 8 is provided between them. The gear 8 meshes with both the first rack 3 and the second rack 7.

[0062] In addition, in order to strengthen the fixation of the tongue, a tongue side plate 304 is provided on the side of the connecting rod 303 close to the buccal blocker 4.

[0063] When the gear 8 rotates, it can drive the rack 13 and the rack 27 to move in the opposite direction. The rack 13 drives the hinged rod 2 to open to the upper and lower sides, and the angle between the two hinged rods 2 becomes larger, driving the upper articulator 101 and the lower articulator 102 to open, which plays a supporting role for the patient's teeth. When the upper articulator 101 and the lower articulator 102 are opened, the upper baffle 402 and the lower baffle 403 can be driven to move to both sides through the connecting rod 15 and the connecting rod 26 to expand the protection area of ​​the cheek. When the rack 13 moves, it can also drive the lingual side plate 304 to move to the side close to the articulator to strengthen the fixation of the tongue. At the same time, the rack 27 drives the sliding sleeve 401 to move outward to open the patient's mouth, and the upper baffle 402 and the lower baffle 403 are pulled by the connecting rod 15 and the connecting rod 26, and the overall shape is a "C" shape, which conforms to the shape of the human cheek.

[0064] Embodiment 2

[0065] For ease of operation, a spring structure 9 is provided on the gear 8. After the spring is wound before being placed in the patient's mouth, the gear 8 can automatically rotate under the action of the spiral sheet 901, driving the rack 1 3 and the rack 2 7 to move to both sides to complete the expansion.

[0066] The clockwork structure 9 includes a spiral piece 901 and a rotating cover 902 arranged above the gear 8. The rotating cover 902 is coaxially arranged with the gear 8, and a central axis 903 is fixedly connected between the rotating cover 902 and the gear 8. An arc piece 904 is arranged outside the central axis 903, and the arc piece 904 is fixedly connected to the gear 8 and coaxially arranged with the central axis 903. One end of the spiral piece 901 is fixedly connected to the inner side of the arc piece 904. The other end of the spiral piece 901 is fixedly connected to the inner side of the rotating cover 902.

[0067] When the rotating cover 902 is rotated counterclockwise, the internal spiral sheet 901 is tightened, and the spiral sheet 901 gathers along the central axis 903. The power generated by the elastic force of the spiral sheet 901 when it is gradually loosened drives the gear 8 to rotate, thereby further supporting the oral cavity.

[0068] In addition, the clockwork structure 9 can also be replaced by other structures with braking function, such as a micro motor or a torsion spring.

[0069] Embodiment 3

[0070] In addition, a saliva suction tube 10 is also provided, and the saliva suction tube 10 extends from between the connecting rod 1 5 and the connecting rod 2 6 to suck saliva. The saliva suction tube 10 includes a suction head 1001, and the suction head 1001 is a porous structure, which relieves the excessive pressure of single-hole suction and improves the efficiency of saliva suction. A connecting pipe 1002 is integrally connected to one end of the suction head 1001, and the connecting pipe 1002 is threadedly connected to the fixed seat 1003. A one-way filter screen 1004 is arranged in the fixed seat 1003 to prevent backflow. A rotating blade 1005 is connected to one side of the filter screen 1004 through a connecting shaft, and the rotating blade 1005 is driven to rotate by a motor 1006 to crush and collect solid matter. A side wall scraper 1007 is also provided on the connecting shaft, and when the rotating blade 1005 rotates, it drives the side wall scraper 1007 to clean up solid or viscous impurities near the suction head 1001.

[0071] The other end of the fixing seat 1003 is a silicone suction tube 1008, and the built-in support rod 1009 can be bent into a suitable arc at will, so as to adjust the angle of the suction head 1001. The end of the suction tube 1008 is provided with a negative pressure suction device 1010 and a discharge tube 1011. The negative pressure suction device 1010 adopts the existing structure and is not improved here, so its internal structure is not described in detail.

[0072] The use process of the present invention is:

[0073] 1. In the initial state, the upper expander and the lower expander are in a closed state, the rack 1 3 and the rack 2 7 are arranged alternately, and the spiral sheet 901 is in a relaxed state, and the upper baffle 402 and the lower baffle 403 are located inside the sliding sleeve 401.

[0074] 2. Adjust the direction so that the direction of oral placement is suitable for the area where the patient needs surgery. When the rotating cover 902 is rotated counterclockwise, the internal spiral sheet 901 is driven to be tightened to store power. Then, the structure other than the saliva suction tube is placed in the patient's mouth. After the position is properly placed, the rotating cover 902 is loosened. The gear 8 rotates in the opposite direction under the drive of the spiral sheet 901, driving the rack 1 3 and the rack 2 7 to move in the opposite direction. The rack 1 3 drives the hinged rod 2 to open to the upper and lower sides, and the angle between the two hinged rods 2 becomes larger, driving the upper articulator 101 and the lower articulator 102 to open, which plays a supporting role for the patient's teeth. When the upper articulator 101 and the lower articulator 102 are opened, the upper baffle 402 and the lower baffle 403 can be driven to move to both sides through the connecting rod 1 5 and the connecting rod 2 6 to expand the protection area of ​​the buccal side. When the rack 1 3 moves, it can also drive the lingual side plate 304 to move to the side close to the articulator to strengthen the fixation of the tongue. At the same time, rack 2 7 drives the sliding sleeve 401 to move outward to open the patient's mouth, and the upper baffle 402 and the lower baffle 403 are pulled by connecting rod 1 5 and connecting rod 2 6, and the overall shape is "C" shape, which conforms to the shape of the human cheek.

[0075] 3. The saliva suction tube 10 extends between the first connecting rod 5 and the second connecting rod 6, and saliva is suctioned through the negative pressure effect of the negative pressure aspirator 1010. The motor 1006 drives the rotary blade 1005 to rotate, crushing and collecting solid substances. When the rotary blade 1005 rotates, it drives the side wall scraper 1007 to clean the solid or viscous impurities near the suction head 1001.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A saliva suction device for use in alveolar surgery, characterized in that: include: An oral expansion structure, comprising a gear (8) and a rack 1 (3) and a rack 2 (7) meshing with each other, wherein the gear (8) can drive the rack 1 (3) and the rack 2 (7) on both sides to move in opposite directions, a tooth spreader (1) is arranged at the end of the rack 1 (3), and a buccal blocker (4) is arranged at the end of the rack 2 (7); The saliva suction tube (10) is arranged between the teeth spreader (1) and the buccal blocker (4).

2. A saliva suction device for alveolar surgery according to claim 1, characterized in that: The tooth spreader (1) comprises an upper articulator (101) and a lower articulator (102) which are hinged, wherein the upper articulator (101) and the lower articulator (102) are respectively rotatably connected to a hinged rod (2), and the free ends of the two hinged rods (2) are connected to a rack (3).

3. A saliva suction device for alveolar surgery according to claim 2, characterized in that: The cheek blocker (4) comprises a sliding sleeve (401), an upper baffle plate (402) and a lower baffle plate (403) are slidably connected inside the sliding sleeve (401), and the upper baffle plate (402) and the lower baffle plate (403) are arranged in a staggered manner.

4. A saliva suction device for alveolar surgery according to claim 3, characterized in that: The rack one (3) and the rack two (7) are arranged on both sides of the gear (8) and are parallel to each other. The gear (8) is provided with a clockwork structure (9).

5. A saliva suction device for alveolar surgery according to claim 4, characterized in that: The clockwork structure (9) comprises a spiral piece (901) and a rotating cover (902) arranged above the gear (8); a central axis (903) is connected between the rotating cover (902) and the gear (8); an arc-shaped piece (904) is arranged outside the central axis (903); one end of the spiral piece (901) is connected to the inner side of the arc-shaped piece (904), and the other end is connected to the inner wall of the rotating cover (902).

6. A saliva suction device for alveolar surgery according to claim 5, characterized in that: The other end of the rack one (3) is provided with a lingual side plate (304).

7. A saliva suction device for alveolar surgery according to claim 6, characterized in that: A connecting rod 1 (5) is provided between the upper articulator (101) and the upper baffle plate (402), and a connecting rod 2 (6) is provided between the lower articulator (102) and the lower baffle plate (403).

8. A saliva suction device for use in alveolar surgery according to claim 7, characterized in that: A one-way filter screen (1004) is arranged inside the saliva suction tube (10), and the filter screen (1004) is connected to a rotating blade (1005) via a connecting shaft, and a side wall scraper (1007) is also arranged on the connecting shaft.

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