Rubber barrier saliva suction and drainage device for oral treatment

Abstract

The invention discloses a rubber barrier saliva suction and drainage device for oral treatment, relates to the technical field of dental rubber barrier instruments, and provides the following scheme that the rubber barrier saliva suction and drainage device comprises a negative pressure drainage assembly, and the negative pressure conveying end of the negative pressure drainage assembly is connected with a rubber barrier saliva suction and drainage piece; and an oral cavity dilator is arranged on the upper surface of the rubber barrier saliva suction drainage piece. According to the technical scheme, the rubber blanket is tightened in the rubber barrier fixing frame, the rubber barrier is fixed to the position, tightly attached to the periphery of the lip, above the oral cavity through cooperation between the elastic binding band and the fixing frame, and therefore the rubber barrier obtains a good stable posture, and the negative pressure suction pump, the liquid collecting tank and the negative pressure pipeline are used for sucking liquid in the oral cavity. The lower-layer annular hose located below the rubber barrier obtains the negative pressure capacity, so that after the rubber barrier is attached to the inner wall of the oral cavity, the lower-layer annular hose is located between the rubber barrier and the oral cavity, and saliva secreted by the oral cavity of the patient is extracted through thin holes formed in the lower-layer annular hose and negative pressure.

Description

Technical Field

[0001] The invention relates to the technical field of dental rubber dams, and in particular to a rubber dam saliva suction and drainage device for oral treatment. Background Art

[0002] The rubber dam is also called a moisture-proof rubber dam, which is a piece of rubber cloth that is used to isolate saliva. The principle of rubber dam isolation is to use the elasticity of the rubber cloth, punch a hole, and then put it on the neck of the tooth as a barrier to isolate the crown of the tooth being treated from the oral cavity. Because during oral diagnosis and treatment operations, the patient's saliva, blood, and secretions generate a large amount of droplets through the oral power device, which spreads over a large area, and there is a high risk of disease transmission between doctors and patients, and between patients. However, during the use of the rubber dam, the inventor found that during oral diagnosis and treatment operations, the patient will unconsciously secrete saliva. Although the rubber dam can effectively isolate the saliva, the secreted saliva will gather in the space below the rubber dam, which will not only cause discomfort to the patient, but also there is a risk of choking the patient. Therefore, a manual hand-held saliva suction device is required to absorb the saliva under the rubber dam, which undoubtedly requires the addition of a person's hand to stabilize the saliva suction device. Therefore, a technical solution of a rubber dam saliva suction and drainage device for oral treatment is proposed by a technician in this field. Summary of the invention

[0003] In view of the above background technology, the rubber dam used for oral treatment has the defect that it does not have the ability to suck saliva in the oral cavity, and thus a technical solution of a rubber dam saliva suction and drainage device for oral treatment is provided.

[0004] It includes a negative pressure drainage component, the negative pressure delivery end of the negative pressure drainage component is connected to a rubber dam saliva suction drainage piece; the upper surface of the rubber dam saliva suction drainage piece is provided with an oral dilator. The negative pressure drainage component includes a negative pressure suction pump main unit, four liquid collecting tanks suspended and fixed on the left and right sides of the negative pressure suction pump main unit, and a negative pressure transmission joint connected to the negative pressure delivery port of the liquid collecting tank, and the end of the negative pressure transmission joint away from the liquid collecting tank is connected to a collection bottle pipe, and the end of the collection bottle pipe away from the negative pressure transmission joint is connected to the rubber dam saliva suction drainage piece;

[0005] The rubber dam saliva suction drainage component includes two layers of rubber dam fixing frames stacked and placed in an upper and lower layer, medical rubber cloths clamped and fixed between the rubber dam fixing frames, and a saliva drainage pipe fixedly passed through the left side of the rubber dam fixing frame, one end of the saliva drainage pipe is connected to the end of the collecting bottle pipe away from the negative pressure transmission joint through a pipe joint, and the other end of the saliva drainage pipe is fixedly connected to a lower annular hose located below the medical rubber cloth, and a plurality of fine holes are opened on the circumferential surface of the lower annular hose; specifically, when the negative pressure suction pump inside the negative pressure suction pump host acts to deliver negative pressure to the inside of the liquid collecting tank, the negative pressure inside the liquid collecting tank will be transmitted to the inside of the collecting bottle pipe through the negative pressure transmission joint, and the collecting bottle pipe and the saliva drainage pipe are connected by a plug-in joint, and the saliva secreted by the patient's oral cavity during oral treatment will enter the inside of the lower annular hose along the fine holes on the surface of the lower annular hose, and due to the effect of negative pressure, the saliva will enter the inside of the liquid collecting tank along the lower annular hose, the saliva drainage pipe and the collecting bottle pipe.

[0006] The left and right sides of the rubber dam fixing frame at the bottom are fixedly connected with two side fixing blocks, and the left and right side fixing blocks are fixedly connected with an elastic band. Specifically, the rubber dam fixing frame is put on the patient's face using two elastic bands so that the lower surface of the rubber dam fixing frame at the bottom contacts the facial skin or the lip area. A brand new medical rubber sheet is placed on the upper surface of the rubber dam fixing frame at the bottom, and the upper rubber dam fixing frame is placed on the upper surface of the medical rubber sheet. The rectangular magnetic frames between the two rubber dam fixing frames are magnetically attracted to each other, so that the edges of the medical rubber sheet are clamped by the rectangular magnetic frames. Since the medical rubber sheet has plasticity, the lower surface of the medical rubber sheet is attached to the inner wall of the oral cavity, and the lower annular hose is placed between the inner wall of the oral cavity and the medical rubber sheet.

[0007] A branch pipe penetrating the medical rubber cloth is connected to the side wall of the saliva drainage pipe, and one end of the branch pipe away from the saliva drainage pipe is connected to an upper annular hose located on the upper surface of the medical rubber cloth, the bottom surface of the upper annular hose contacts the upper surface of the medical rubber cloth, and a plurality of fine holes are arranged on the outer ring surface of the upper annular hose for absorbing saliva on the upper surface of the medical rubber cloth; specifically, the upper and lower annular hoses are arranged at the upper and lower positions of the medical rubber cloth, so that the saliva at the upper and lower positions of the medical rubber cloth can be absorbed synchronously.

[0008] The oral dilator includes two pairs of support seats fixed to the upper surface of the rubber dam fixing frame in a mirror-symmetrical manner, and threaded screws that penetrate and rotate inside the support seats, and the ends of the threaded screws that are close to each other are rotatably connected to a silicone gasket. Specifically, the oral dilator is used to expand the patient's mouth outward, avoiding the problem of oral expansion fatigue caused by the patient's continuous opening of the mouth during long-term surgical operations.

[0009] In the above-mentioned technical solution of the rubber dam saliva suction drainage device for oral treatment, preferably: the negative pressure suction pump main unit includes a rectangular metal shell, four rollers fixed to the four corners of the bottom of the rectangular metal shell by screws, and an air pressure instrument and a control panel are installed on the front surface of the rectangular metal shell; the liquid collecting tanks are connected to each other through negative pressure pipes, and an extension pipe is connected to the end cover of the front liquid collecting tank, and the end of the extension pipe is connected to the bottom end of the negative pressure transmission joint through a pipe joint.

[0010] In the above-mentioned technical solution of the rubber dam saliva suction and drainage device for oral treatment, preferably: the interior of the support seat is provided with threaded holes that are compatible with the outer circle threads of the threaded screw, and the surfaces of the silicone gaskets on the sides away from each other have arc surfaces for contacting the patient's teeth.

[0011] In the above-mentioned technical solution of the rubber dam saliva suction and drainage device for oral treatment, preferably: the inside of the rubber dam fixing frame is provided with a rectangular opening for placing the medical rubber cloth, and a circle of rectangular magnetic frame is fixed on the inner surface of the rubber dam fixing frame by adhesive.

[0012] In the above-mentioned technical solution of the rubber dam saliva suction and drainage device for oral treatment, preferably: the upper and lower rectangular magnetic frames are connected on one side close to each other by magnetic adsorption, and there is a gap of 3.0mm-5.0mm between the surfaces of the side close to each other of the rectangular magnetic frames for placing the edges of the medical rubber cloth around them, and the surfaces of the side close to each other of the rectangular magnetic frames are in contact with the upper and lower surface edge areas of the medical rubber cloth respectively.

[0013] In the above-mentioned technical solution of the rubber dam saliva suction and drainage device for oral treatment, preferably: a notch is provided on the left surface of the rubber dam fixing frame for the saliva drainage tube to pass through and be embedded, and the saliva drainage tube passes through the notch to the end below the medical rubber cloth and has an angle of 50-70° with the horizontal plane.

[0014] In the technical solution of the rubber dam saliva suction drainage device for oral treatment, preferably: the inner cavity space of the saliva drainage pipe and the inner cavity space of the lower annular hose are interconnected, and the outer ring surface of the lower annular hose is in contact with the inner surface of the oral cavity.

[0015] In the above-mentioned technical solution of the rubber dam saliva suction drainage device for oral treatment, preferably: one end of the collecting bottle pipe away from the negative pressure transmission joint is connected to the end of the saliva drainage pipe away from the lower annular hose through a plug-in joint, and a check valve is installed on the pipeline of the collecting bottle pipe.

[0016] In the technical solution of the rubber dam saliva suction and drainage device for oral treatment, preferably: a rectangular through hole is opened inside the side fixing block, and both ends of the elastic band pass through and are fixed in the rectangular through hole respectively.

[0017] In the technical solution of the rubber dam saliva suction and drainage device for oral treatment, preferably: the bottom surface of the rubber dam fixing frame at the bottom contacts the skin around the lips and the face, and the inner surface of the elastic band contacts the back of the head by virtue of its elasticity.

[0018] It can be seen from the above technical scheme that the present invention provides a rubber dam saliva suction and drainage device for oral treatment. Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the technical solution of the present invention, the rubber cloth is tightened on the rubber dam fixing frame, and the rubber dam is fixed above the oral cavity close to the lip area by the cooperation between the elastic band and the fixing frame, so that the rubber dam can obtain a better stable posture, and with the help of a negative pressure suction pump, a liquid collection tank and a negative pressure pipeline, the lower annular hose below the rubber dam can obtain negative pressure capacity, so that after the rubber dam is attached to the inner wall of the oral cavity, the lower annular hose is between the rubber dam and the oral cavity, and the pores arranged on the lower annular hose and the negative pressure are used to extract the saliva secreted by the patient's oral cavity. It solves the problem of splashing during oral operations, such as under a microscope, tooth extraction, periodontal treatment, and tooth preparation, improves the spread of aerosols, replaces manual saliva suction, and has the effect of being convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of the oral rubber dam saliva suction and drainage device;

[0022] Figure 2 is a schematic diagram of a negative pressure drainage component;

[0023] Figure 3 This is a schematic diagram of a rubber dam saliva suction drainage device;

[0024] Figure 4 This is a schematic diagram of the rubber dam fixation frame after it is disassembled;

[0025] Figure 5 Schematic diagram of an oral dilator and a saliva suction tube.

[0026] Attached Figure 1 -Attached Figure 5 The corresponding relationship of the parts is as follows:

[0027] 1. Negative pressure drainage assembly; 11. Negative pressure suction pump main unit; 12. Liquid collecting tank; 13. Negative pressure transmission joint; 14. Collection bottle pipe; 2. Rubber dam saliva suction drainage component; 21. Rubber dam fixing frame; 22. Side fixing block; 23. Saliva drainage pipe; 24. Elastic band; 25. Lower ring hose; 26. Medical rubber cloth; 27. Rectangular magnetic frame; 28. Branch pipe; 29. ​​Upper ring hose; 3. Oral dilator; 31. Support seat; 32. Threaded screw; 33. Silicone gasket. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0030] Embodiment: A preferred technical solution of a rubber dam saliva suction and drainage device for oral treatment:

[0031] Refer to the instruction manual Figure 1 As shown: it includes a negative pressure drainage component 1, the negative pressure delivery end of the negative pressure drainage component 1 is connected to a rubber dam saliva suction drainage piece 2; the upper surface of the rubber dam saliva suction drainage piece 2 is provided with an oral dilator 3. The negative pressure drainage component 1 includes a negative pressure suction pump main unit 11, four liquid collecting tanks 12 suspended and fixed on the left and right sides of the negative pressure suction pump main unit 11, and a negative pressure transmission connector 13 connected to the negative pressure delivery port of the liquid collecting tank 12, and the end of the negative pressure transmission connector 13 away from the liquid collecting tank 12 is connected to a collecting bottle pipe 14, and the end of the collecting bottle pipe 14 away from the negative pressure transmission connector 13 is connected to the rubber dam saliva suction drainage piece 2;

[0032] Refer to the instruction manual Figure 3As shown: the rubber dam saliva suction drainage member 2 includes two layers of rubber dam fixing frames 21 stacked up and down, medical rubber cloths 26 clamped and fixed between the rubber dam fixing frames 21, and a saliva drainage pipe 23 passing through and fixed from the left side of the rubber dam fixing frame 21, one end of the saliva drainage pipe 23 is connected to the end of the collection bottle pipe 14 away from the negative pressure transmission joint 13 through a pipe joint, and the other end of the saliva drainage pipe 23 is fixedly connected to a lower annular hose 25 located below the medical rubber cloth 26, and a plurality of fine holes are opened on the surface of the lower annular hose 25; two side fixing blocks 22 are fixedly connected to the left and right sides of the bottom rubber dam fixing frame 21, and an elastic band 24 is fixedly connected between the left and right side fixing blocks 22.

[0033] Refer to the instruction manual Figure 3 As shown: a branch pipe 28 penetrating the medical rubber cloth 26 is connected to the side wall of the saliva drainage pipe 23, and one end of the branch pipe 28 away from the saliva drainage pipe 23 is connected to an upper annular hose 29 located on the upper surface of the medical rubber cloth 26, the bottom surface of the upper annular hose 29 contacts the upper surface of the medical rubber cloth 26, and a plurality of fine holes are provided on the outer surface of the upper annular hose 29 for absorbing saliva on the upper surface of the medical rubber cloth 26;

[0034] Refer to the instruction manual Figure 5 As shown: the oral dilator 3 includes two pairs of support seats 31 fixed to the upper surface of the rubber dam fixing frame 21 in a left-right mirror-symmetrical manner, and a threaded screw 32 that passes through and rotates inside the support seat 31, and the ends of the threaded screw 32 that are close to each other are rotatably connected to a silicone gasket 33.

[0035] Refer to the instruction manual Figure 2 As shown, the negative pressure suction pump main unit 11 includes a rectangular metal shell, four rollers fixed to the four corners of the bottom of the rectangular metal shell by screws, and a pressure meter and a control panel are installed on the front surface of the rectangular metal shell. The liquid collecting tanks 12 are connected to each other through negative pressure pipes, and an extension pipe is connected to the end cover of the front liquid collecting tank 12, and the end of the extension pipe is connected to the bottom end of the negative pressure transmission joint 13 through a pipe joint.

[0036] Refer to the instruction manual Figure 4As shown: the rubber dam fixing frame 21 is provided with a rectangular opening for placing the medical rubber sheet 26, and a circle of rectangular magnetic frames 27 are fixed on the inner surface of the rubber dam fixing frame 21 by adhesive. The upper and lower rectangular magnetic frames 27 are connected by magnetic adsorption on the sides close to each other, and there is a gap of 3.0mm-5.0mm between the surfaces of the rectangular magnetic frames 27 close to each other, which is used for placing the edges of the medical rubber sheet 26, and the surfaces of the rectangular magnetic frames 27 close to each other are in contact with the upper and lower surface edge areas of the medical rubber sheet 26. The left surface of the rubber dam fixing frame 21 is provided with a notch for the saliva drainage pipe 23 to pass through and be embedded, and the end of the saliva drainage pipe 23 passing through the notch to the bottom of the medical rubber sheet 26 has an angle of 50-70° with the horizontal plane. The inner cavity space of the saliva drainage pipe 23 is interconnected with the inner cavity space of the lower annular hose 25, and the outer ring surface of the lower annular hose 25 is in contact with the inner surface of the oral cavity.

[0037] Refer to the instruction manual Figure 3 As shown: the end of the collection bottle pipe 14 away from the negative pressure transmission joint 13 is connected to the end of the saliva drainage pipe 23 away from the lower ring hose 25 through a plug-in joint, and a check valve is installed on the pipe of the collection bottle pipe 14. A rectangular through hole is opened inside the side fixing block 22, and the two ends of the elastic band 24 pass through and are fixed in the rectangular through hole respectively. The bottom surface of the bottom rubber dam fixing frame 21 contacts the lip and facial skin, and the inner surface of the elastic band 24 contacts the back of the head by elasticity.

[0038] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:

[0039] After turning on the negative pressure suction pump inside the negative pressure suction pump main unit 11, use two elastic bands 24 to put the rubber dam fixing frame 21 on the patient's face, so that the lower surface of the bottom rubber dam fixing frame 21 contacts the facial skin or the lip area. Place a brand new medical rubber cloth 26 on the upper surface of the bottom rubber dam fixing frame 21, and place the upper rubber dam fixing frame 21 on the upper surface of the medical rubber cloth 26. Relying on the mutual magnetic attraction of the rectangular magnetic frame 27 between the two rubber dam fixing frames 21, the edges of the medical rubber cloth 26 are clamped by the rectangular magnetic frame 27. Since the medical rubber cloth 26 has plasticity, the lower surface of the medical rubber cloth 26 is attached to the inner wall of the oral cavity, and the lower annular hose 25 is placed between the inner wall of the oral cavity and the medical rubber cloth 26.

[0040] When the negative pressure suction pump in the negative pressure suction pump main unit 11 delivers negative pressure to the inside of the liquid collecting tank 12, the negative pressure in the liquid collecting tank 12 will be transmitted to the inside of the collecting bottle pipe 14 through the negative pressure transmission joint 13, and the collecting bottle pipe 14 and the saliva drainage pipe 23 are connected by a plug-in joint. During the oral treatment, the saliva secreted by the patient's oral cavity is distributed in the upper and lower positions of the medical rubber cloth 26, and through the pores on the surface of the lower annular hose 25 and the upper annular hose 29, the saliva will enter the lower annular hose 25 and the upper annular hose 29. Due to the effect of negative pressure, the saliva will enter the inside of the liquid collecting tank 12 along the saliva drainage pipe 23 and the collecting bottle pipe 14. In addition, before the oral surgery, the patient's teeth are allowed to bite four symmetrical silicone gaskets 33, and the oral cavity is expanded by rotating the threaded screw 32, which plays a role in supporting the patient's oral cavity.

[0041] In addition, as attached Figure 3 and attached Figure 4 As shown, if the oral expander 3 prevents the instrument from entering the oral cavity during oral surgery, a silicone bite pad is used, and the isosceles trapezoidal bite pad is placed deep in the meshing of the upper and lower teeth, thereby increasing the opening angle of the oral cavity and supporting the opening of the oral cavity.

[0042] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions that can be implemented in this application, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by this application and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.

Claims

1. A rubber dam saliva suction drainage device for oral treatment, comprising a negative pressure drainage component (1), characterized in that: The negative pressure delivery end of the negative pressure drainage component (1) is connected to a rubber dam saliva suction drainage piece (2), and an oral dilator (3) is provided on the upper surface of the rubber dam saliva suction drainage piece (2); The negative pressure drainage assembly (1) comprises a negative pressure suction pump main unit (11), four liquid collecting tanks (12) suspended and fixed on the left and right sides of the negative pressure suction pump main unit (11), and a negative pressure transmission connector (13) connected to the negative pressure transmission port of the liquid collecting tank (12), and an end of the negative pressure transmission connector (13) away from the liquid collecting tank (12) is connected to a collection bottle pipe (14), and an end of the collection bottle pipe (14) away from the negative pressure transmission connector (13) is connected to a rubber dam saliva suction drainage component (2); The rubber dam saliva suction drainage component (2) comprises two layers of rubber dam fixing frames (21) stacked up and down, a medical rubber cloth (26) clamped and fixed between the rubber dam fixing frames (21), and a saliva drainage pipe (23) passing through and fixed from the left side of the rubber dam fixing frame (21), one end of the saliva drainage pipe (23) is connected to the end of the collection bottle pipe (14) away from the negative pressure transmission joint (13) through a pipe joint, and the other end of the saliva drainage pipe (23) is fixedly connected to a lower layer annular hose (25) located below the medical rubber cloth (26), and a plurality of fine holes are opened on the circumferential surface of the lower layer annular hose (25); The rubber dam fixing frame (21) at the bottom is fixedly connected to two side fixing blocks (22) on both sides, and an elastic band (24) is fixedly connected between the two side fixing blocks (22) on both sides; the side wall of the saliva drainage pipe (23) is connected to a branch pipe (28) penetrating the medical rubber cloth (26); the end of the branch pipe (28) away from the saliva drainage pipe (23) is connected to an upper annular hose (29) located on the upper surface of the medical rubber cloth (26); the bottom surface of the upper annular hose (29) is in contact with the upper surface of the medical rubber cloth (26), and a plurality of fine holes are arranged on the outer ring surface of the upper annular hose (29) for absorbing saliva on the upper surface of the medical rubber cloth (26); The oral dilator (3) comprises two pairs of support seats (31) fixed to the upper surface of the rubber dam fixing frame (21) in a left-right mirror-symmetrical manner, and a threaded screw (32) passing through and rotating inside the support seat (31), and the ends of the threaded screw (32) close to each other are both rotatably connected to a silicone gasket (33).

2. The rubber dam saliva suction and drainage device for oral treatment according to claim 1, characterized in that: The negative pressure suction pump main unit (11) comprises a rectangular metal shell, four rollers fixed to the four corners of the bottom of the rectangular metal shell by screws, and a pressure meter and a control panel are installed on the front surface of the rectangular metal shell; the liquid collecting tanks (12) are connected to each other by negative pressure pipes, and an extension pipe is connected to the end cover of the front liquid collecting tank (12), and the end of the extension pipe is connected to the bottom end of the negative pressure transmission joint (13) through a pipe joint.

3. The rubber dam saliva suction and drainage device for oral treatment according to claim 1, characterized in that: The support seat (31) is provided with a threaded hole adapted to the outer thread of the threaded screw rod (32), and the surface of the silicone gasket (33) on one side away from each other has a curved surface for contacting the patient's teeth.

4. The rubber dam saliva suction and drainage device for oral treatment according to claim 1, characterized in that: The rubber dam fixing frame (21) is provided with a rectangular opening for placing a medical rubber cloth (26) therein, and a circle of rectangular magnetic frame (27) is fixed to the inner surface of the rubber dam fixing frame (21) by adhesive.

5. The rubber dam saliva suction and drainage device for oral treatment according to claim 4, characterized in that: The upper and lower rectangular magnetic frames (27) are connected by magnetic adsorption on their adjacent surfaces. There is a gap of 3.0 mm to 5.0 mm between the adjacent surfaces of the rectangular magnetic frames (27) for placing the edges of the medical rubber sheet (26). The adjacent surfaces of the rectangular magnetic frames (27) are in contact with the upper and lower edge areas of the medical rubber sheet (26) respectively.

6. The rubber dam saliva suction and drainage device for oral treatment according to claim 1, characterized in that: The left side surface of the rubber dam fixing frame (21) is provided with a notch for the saliva drainage pipe (23) to penetrate and be embedded, and the saliva drainage pipe (23) penetrates from the notch to the end below the medical rubber cloth (26) and has an angle of 50-70 degrees with the horizontal plane.

7. The rubber dam saliva suction and drainage device for oral treatment according to claim 1, characterized in that: The inner cavity space of the saliva drainage pipe (23) and the inner cavity space of the lower annular hose (25) are interconnected, and the outer ring surface of the lower annular hose (25) is in contact with the inner surface of the oral cavity.

8. The rubber dam saliva suction and drainage device for oral treatment according to claim 1, characterized in that: One end of the collecting bottle pipe (14) away from the negative pressure transmission joint (13) is connected to one end of the saliva drainage pipe (23) away from the lower annular hose (25) via a plug-in joint, and a check valve is installed on the pipe of the collecting bottle pipe (14).

9. The rubber dam saliva suction and drainage device for oral treatment according to claim 1, characterized in that: A rectangular through hole is provided inside each of the side fixing blocks (22), and both ends of the elastic band (24) respectively pass through and are fixed in the rectangular through hole.

10. The rubber dam saliva suction and drainage device for oral treatment according to claim 1, characterized in that: The bottom surface of the rubber dam fixing frame (21) contacts the skin around the lips and the face, and the inner surface of the elastic band (24) contacts the back of the head by virtue of its elasticity.

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