Adjustable saliva suction tube

Abstract

The utility model relates to the field of medical auxiliary equipment, and discloses an adjustable saliva suction tube which comprises a saliva suction tube body, an end cover and an opening and closing plate, the end cover is fixed at an opening of the saliva suction tube body, and a plurality of main saliva suction holes are uniformly distributed on the end face of the end cover around the axis of the end cover; the opening and closing plate is arranged on the end face of the side, close to the saliva suction pipe body, of the end cover, is coaxially and rotationally connected with the end cover and comprises a plurality of adjusting baffles corresponding to the main saliva suction holes; the opening-closing plate is connected with a transmission part, one end, far away from the opening-closing plate, of the transmission part is provided with a shifting part, the saliva suction tube body is provided with a sliding groove corresponding to the shifting part, and one end of the shifting part penetrates through the sliding groove and is arranged on the outer side of the saliva suction tube body; according to the utility model, the opening and closing plate is driven to rotate through the shifting piece, so that the size of the area, through which the main saliva suction hole can pass, is adjusted, and small planted parts are prevented from being sucked into the saliva suction pipe by mistake; the main saliva suction hole is formed in the end face of the end cover, the opening direction is consistent with the air suction direction, the main saliva suction hole can be better attached to the oral cavity of a patient, and the saliva suction efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to an adjustable saliva suction tube. Background Art

[0002] Saliva suction technology is an essential operation in the process of oral diagnosis and treatment. It refers to the use of saliva suction devices and negative pressure suction devices to remove water mist, debris, blood and saliva in the mouth to maintain a clear field of vision and assist the smooth operation. Saliva suction technology is the most basic nursing operation skill in dental clinics. Correct use of this technology can improve the doctor's work efficiency and quality. During the implant surgery, a large amount of physiological saline will be sprayed for cooling, and a large amount of pathogens and blood will be produced in the patient's mouth during treatment. At this time, the use of saliva suction technology can also effectively avoid microbial contamination of the clinic air. However, in the actual oral implant treatment process, the aperture size of the saliva suction tube is generally larger than 2.5 mm. The minimum diameter of small implant components such as repair screws is about 2 mm, which is basically smaller than the aperture size of the saliva suction tube. Small implant components must be used throughout the entire implant process. During the saliva suction process, the small implant components are easily dropped due to their small size, difficulty in holding, and easy slippage when encountering saliva. If the medical staff is not familiar with the saliva suction tube device and the saliva suction process, it is very easy to cause accidental aspiration of the small implant components, which in turn causes waste and increased costs, increases the difficulty of treatment, and makes the treatment process more cumbersome. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to prevent the saliva suction tube from accidentally sucking up small implant components. In order to solve the above technical problem, the utility model provides an adjustable saliva suction tube, including a saliva suction tube body;

[0004] An end cover, the end cover is fixed to the opening of the saliva suction tube body, and the end surface of the end cover is evenly distributed with a plurality of main saliva suction holes around the axis of the end cover;

[0005] An opening and closing plate, wherein the opening and closing plate is arranged on the end surface of the end cover close to the saliva suction tube body, and the opening and closing plate is coaxially rotatably connected with the end cover, and the opening and closing plate comprises a plurality of adjustment baffles corresponding to the main saliva suction hole; the opening and closing plate is connected with a transmission member, and a toggle member is arranged at one end of the transmission member away from the opening and closing plate, and the saliva suction tube body is provided with a slide groove corresponding to the toggle member, and one end of the toggle member passes through the slide groove and is arranged on the outside of the saliva suction tube body.

[0006] Preferably, the side wall of the saliva suction tube body is provided with an annular groove, a mounting notch and a limiting notch, one end of the mounting notch passes through the end surface of the saliva suction tube body opening, and a limiting block is provided on the inner side of the end cover corresponding to the limiting notch.

[0007] Preferably, an elastic sealing ring is sleeved in the annular groove.

[0008] Preferably, a mounting groove is provided in the middle of the end surface of the end cover, and an inner side wall of the mounting groove is provided with internal locking teeth;

[0009] The opening and closing plate also includes a limiting column, the end of which is arranged in the installation groove, the outer wall of the limiting column is provided with external teeth corresponding to the internal teeth, and the adjusting baffle is evenly fixed to the outer wall of the limiting column.

[0010] Preferably, the end of the limiting column and the bottom wall of the mounting groove are respectively provided with magnet pieces that attract each other.

[0011] Preferably, the transmission member comprises an arc-shaped rotating plate vertically arranged at the outer edge of the adjusting baffle, the rotating plate is in contact with the inner wall of the saliva suction tube body, and the toggle member is fixed to one of the rotating plates.

[0012] Preferably, an elastic sealing member is provided between the toggle member and the slide groove; and the rotating plate provided with the toggle member is provided with a sealing baffle extending in the circumferential direction corresponding to the slide groove.

[0013] Preferably, the plate surface of the sealing baffle is provided with scales, and the body of the saliva suction tube is provided with scale indicating lines at the slide groove.

[0014] Preferably, the side wall of the saliva suction pipe body is further provided with a plurality of auxiliary saliva suction hole groups corresponding to the rotating plate, the auxiliary saliva suction hole groups include a plurality of evenly distributed auxiliary saliva suction holes, and the projection of the auxiliary saliva suction hole groups on the end surface of the end cover is staggered with the main saliva suction holes.

[0015] Preferably, the main saliva suction hole and the adjustment baffle are both fan-shaped.

[0016] Compared with the prior art, the adjustable saliva suction tube provided in the embodiment of the utility model has the following beneficial effects:

[0017] In the utility model, an adjusting baffle is provided corresponding to the main saliva suction hole, and the opening and closing plate is driven to rotate by the toggle member and the transmission member, so that the horizontal position of the adjusting baffle coincides with the horizontal position of the main saliva suction hole, thereby adjusting the size of the area available for passage through the main saliva suction hole. In the actual oral treatment and implantation process, the opening size of the main saliva suction hole can be reasonably selected according to the current treatment situation, so as to avoid the implantation of small parts being accidentally sucked into the saliva suction tube; in addition, the main saliva suction hole is arranged on the end face of the end cover, and its opening direction is consistent with the direction of air suction flow in the saliva suction tube. The main saliva suction hole can also better fit the patient's oral part, thereby extracting water mist and debris in the patient's mouth, and the saliva suction efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an exploded view of the utility model;

[0019] Figure 2 It is a three-dimensional view of the end cover of the utility model;

[0020] Figure 3 It is a three-dimensional view of the opening and closing plate of the utility model;

[0021] Figure 4 It is a three-dimensional view of the saliva suction tube body of the utility model.

[0022] In the figure: 1, saliva suction tube body; 11, slide groove; 12, annular groove; 13, installation notch; 14, limit notch; 15, elastic sealing ring; 16, scale indicator line;

[0023] 2. End cover; 21. Main saliva suction hole; 22. Limit block; 23. Mounting groove; 231. Internal clamping teeth; 232. Ring plate; 2321. Notch; 233. Magnet sheet;

[0024] 3. Opening and closing plate; 31. Adjusting baffle; 32. Limiting column; 321. Protrusion; 322. External tooth; 33. Transmission member; 331. Rotating plate; 34. Driving member; 341. Elastic sealing member; 342. Sealing baffle; 343. Scale;

[0025] 4. Accessory saliva suction hole group; 41. Accessory saliva suction hole. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] like Figure 1 As shown, the preferred embodiment of the utility model provides an adjustable saliva suction tube, which comprises: a saliva suction tube body 1;

[0028] An end cover 2 is fixed to the opening of the saliva suction tube body 1, and a plurality of main saliva suction holes 21 are evenly distributed on the end surface of the end cover 2 around the axis of the end cover 2;

[0029] The opening and closing plate 3 is arranged on the end surface of the end cover 2 close to the saliva suction tube body 1, and the opening and closing plate 3 is coaxially rotatably connected with the end cover 2, and the opening and closing plate 3 includes a plurality of adjustment baffles 31 corresponding to the main saliva suction hole 21; the opening and closing plate 3 is connected to a transmission member 33, and a toggle member 34 is provided at one end of the transmission member 33 away from the opening and closing plate 3, and the saliva suction tube body 1 is provided with a slide groove 11 corresponding to the toggle member 34, and one end of the toggle member 34 passes through the slide groove 11 and is arranged on the outside of the saliva suction tube body 1.

[0030] Specifically, in the present embodiment, the end cap 2 is fixedly arranged at the opening of the saliva suction tube body 1, and a plurality of main saliva suction holes 21 are evenly distributed on the circumference of the end surface thereof, and the opening direction of the main saliva suction hole 21 is consistent with the suction direction of the saliva suction tube body 1. Therefore, during the saliva suction process, the main saliva suction hole 21 can better fit the patient's oral cavity, and can better suck the water mist and blood in the patient's oral cavity, especially for the debris adhering to the patient's oral cavity, so as to better ensure the clear operation field of vision during the oral treatment and implantation process; further, when small implantation components are used during the oral treatment process, the opening and closing plate 3 can be rotated according to the specific size of the implantation small components used to adjust the size of the main saliva suction hole 21 that can be passed, while ensuring good saliva suction efficiency and effect, it can also effectively prevent the implantation small components from being accidentally sucked into the saliva suction tube, resulting in increased consumables costs and affecting work efficiency.

[0031] like Figure 4 As shown, in some embodiments, the side wall of the saliva suction duct body 1 is provided with an annular groove 12, a mounting notch 13 and a limiting notch 14, one end of the mounting notch 13 passes through the end surface of the opening of the saliva suction duct body 1, and a limiting block 22 is provided on the inner side of the end cover 2 corresponding to the limiting notch 14.

[0032] Specifically, the saliva suction tube body 1 and the end cover 2 are detachably connected. In this embodiment, when the end cover 2 is installed, the limiting block 22 is first aligned with the installation notch 13, and then the end cover 2 is pressed down to make the limiting block 22 slide downward along the installation notch 13 to the annular groove 12, and then the end cover 2 can be rotated to make the limiting block 22 slide in the annular groove 12 to the limiting notch 14, and then the limiting block 22 is snapped into the limiting notch 14 to achieve the positioning of the end cover 2.

[0033] In some other embodiments, the saliva suction tube body 1 and the end cap 2 may be connected via threads.

[0034] In some embodiments, an elastic sealing ring 15 is sleeved in the annular groove 12. In addition to achieving waterproof sealing between the end cap 2 and the saliva suction tube body 1, when the elastic sealing ring 15 and the limiting notch 14 are respectively arranged on both sides of the limiting block 22, the elastic sealing ring 15 also applies elastic supporting force to the end cap 2, so that the limiting block 22 can be more smoothly and stably inserted into the limiting notch 14, avoiding the limiting block 22 from detaching from the limiting notch 14, and ensuring the stable and reliable connection between the end cap 2 and the saliva suction tube body 1.

[0035] like Figure 2 As shown, in some embodiments, a mounting groove 23 is provided in the middle of the end surface of the end cover 2, and an inner clamping tooth 231 is provided on the inner side wall of the mounting groove 23;

[0036] The opening and closing plate 3 also includes a limiting column 32 , the end of which is arranged in the installation groove 23 , and the outer wall of the limiting column 32 is provided with an outer tooth 322 corresponding to the inner tooth 231 , so that the adjustment baffle 31 is evenly fixed to the outer wall of the limiting column 32 .

[0037] The locking plate 32 is fixedly provided with an adjusting baffle 31 on the outer peripheral wall of the limiting column 32, and the end cover 2 is provided with a mounting groove 23 corresponding to the limiting column 32, and the end of the limiting column 32 is rotatably connected to the mounting groove 23. When the size of the passable area of ​​the main saliva suction hole 21 needs to be adjusted, the limiting column 32 is driven to rotate in the mounting groove 23 by the toggle member 34 and the transmission member 33, so that the adjusting baffle 31 can cover a part of the main saliva suction hole 21. After the opening size of the main saliva suction hole 21 is adjusted, the outer locking tooth 322 at the end of the limiting column 32 can be engaged with the inner locking tooth 231 on the inner side wall of the mounting groove 23, so as to fix the position of the limiting column 32 and the adjusting baffle 31, so as to avoid the problem that the opening of the main saliva suction hole 21 becomes larger due to the arbitrary rotation of the adjusting baffle 31 after the opening size of the main saliva suction hole 21 is adjusted, and small implanted parts are accidentally sucked.

[0038] Furthermore, an annular plate 232 is provided at the open end of the mounting groove 23 away from the bottom wall, and a notch 2321 is provided on the annular plate 232, and a protrusion 321 is provided on the limiting column 32 corresponding to the notch 2321, and the protrusion 321 passes through the notch 2321 and is provided in the mounting groove 23. The cooperation between the protrusion 321 and the annular plate 232 can allow the end of the limiting column 32 to always move in the mounting groove 23, thereby preventing the end of the limiting column 32 from detaching from the mounting groove 23 under the action of external forces such as gravity.

[0039] In some embodiments, the end of the limiting column 32 and the bottom wall of the mounting groove 23 are respectively provided with magnet pieces 233 that attract each other. Among them, the magnet pieces 233 provided at the end of the limiting column 32 and the bottom wall of the mounting groove 23 can make the connection between the limiting column 32 and the mounting groove 23 more stable and tight, especially after the adjustment baffle 31 is adjusted to the predetermined position, the mutual attraction between the magnet pieces 233 can make the outer teeth 322 on the limiting column 32 better and more easily mesh with the inner teeth 231 in the mounting groove 23, without the need to apply additional external force to make the outer teeth 322 mesh with the inner teeth 231, which is simpler. Further, the tooth wall on the side opposite to the outer teeth 322 and the inner teeth 231 is provided with an inclined surface to facilitate the meshing of the outer teeth 322 and the inner teeth 231. Further, in some secondary selected embodiments, the magnet pieces 233 can also be replaced with elastic spring parts, etc.

[0040] like Figure 3As shown, in some embodiments, the transmission member 33 includes an arc-shaped rotating plate 331 vertically arranged at the outer edge of the adjusting baffle 31, the rotating plate 331 is in contact with the inner wall of the saliva suction tube body 1, and the toggle member 34 is fixed to one of the rotating plates 331.

[0041] Specifically, the rotating plate 331 is vertically arranged at one end of the adjusting baffle plate 31 away from the limiting column 32, and extends to the slide groove 11 toward the side away from the end cover 2, and the toggle member 34 is fixed on the rotating plate 331, and one end of the toggle member 34 passes through the slide groove 11 and is arranged on the outside of the saliva suction pipe body 1. When it is necessary to adjust the opening size of the main saliva suction hole 21, the toggle member 34 is first pulled downward to disengage the adjusting baffle plate 31 from the fitting state with the inner end surface of the end cover 2, and the outer clamping teeth 322 are disengaged from the inner clamping teeth 231, and then the outer clamping teeth 322 are disengaged from the inner clamping teeth 231. The toggle member 34 is pushed to slide in the slide groove 11, thereby driving the adjustment baffle 31 to rotate. When the adjustment baffle 31 rotates to a suitable position, the toggle member 34 is released, and the magnet piece 233 at the end of the limiting column 32 is attracted by the magnet piece 233 on the bottom wall of the mounting groove 23, so that the limiting column 32 moves upward, and the outer locking teeth 322 and the inner locking teeth 231 engage with each other to rotate the limiting column 32 and the adjustment baffle 31, and the adjustment baffle 31 also fits with the inner end surface of the end cover 2, thereby completing a process of adjusting the opening size of the main saliva suction hole 21.

[0042] In some other less preferred embodiments, the transmission member 33 can be a transmission rod extending from the limiting column 32 in the direction away from the end cover 2, the transmission rod extends to the slide groove 11, and a toggle member 34 is arranged in the direction of the slide groove 11, and the other end of the toggle member 34 passes through the slide groove 11 and is arranged on the outside of the saliva suction tube body 1. At this time, a rotating plate 331 that fits the inner wall of the saliva suction tube needs to be additionally provided in the middle part of the toggle member 34, and the slide groove 11 is closed by the rotating plate 331.

[0043] In some embodiments, an elastic sealing member 341 is provided between the toggle member 34 and the slide groove 11 ; and a sealing baffle 342 extending along the circumferential direction is provided on the rotating plate 331 provided with the toggle member 34 corresponding to the slide groove 11 .

[0044] Specifically, the elastic seal 341 can seal the connection between the toggle member 34 and the rotating plate 331 and the saliva suction tube body 1 at the slide groove 11; on the other hand, the elastic seal 341 is elastic. When the adjusting baffle 31 is rotated and adjusted, the toggle member 34 needs to be pulled downward first, so that the adjusting baffle 31 and the limiting column 32 move downward, the end of the limiting column 32 is out of the adsorption state with the bottom wall of the mounting groove 23, and the outer tooth 322 is out of the meshing state with the inner tooth 231. The elastic seal 341 is also squeezed by the toggle member 34 and undergoes elastic deformation. When the operator adjusts the adjustment baffle 31 to a suitable position through the toggle member 34 and releases the toggle member 34, the elastic seal 341 can be quickly reset and push the toggle member 34, the adjustment baffle 31 and the limit column 32 to move toward the end cover 2, thereby allowing the outer tooth 322 and the inner tooth 231 to quickly enter into a meshing state, ensuring that the position of the adjustment baffle 31 is stable after the adjustment is completed.

[0045] Furthermore, due to the requirement of the adjustment stroke, during the adjustment process of the baffle plate 31, the simple rotating plate 331 cannot effectively and comprehensively close the chute 11, especially when the main saliva suction hole 21 is in a fully open state. At this time, the projection of the rotating plate 331 on the end surface of the end cover 2 is staggered from the main saliva suction hole 21, and the rotating plate 331 cannot close the section of the chute 11 corresponding to the main saliva suction hole 21. Therefore, it is necessary to additionally extend the sealing baffle plate 342 that fits the inner side of the saliva suction tube body 1.

[0046] In some embodiments, the plate surface of the sealing baffle 342 is provided with a scale 343, and the saliva suction tube body 1 is provided with a scale indicator line 16 at the slide groove 11. Specifically, the scale 343 is set on the sealing baffle 342, and the scale indicator line 16 is set on the outer wall of the saliva suction tube body 1, so that when the operator adjusts the position of the adjustment baffle 31, as the toggle member 34, the rotating plate 331 and the sealing baffle 342 rotate, the operator can clearly see the current adjustment scale 343, and the operator can also know the current opening size of the main saliva suction hole 21 according to the scale 343, which is convenient for the operator to grasp the adjustment of the opening size of the main saliva suction hole 21, and further reduce the occurrence of the problem of mis-absorption of small implanted parts. Compared with the solution of setting the scale 343 on the saliva suction tube body 1, the scale 343 and the scale indicator line 16 in this embodiment will not be blocked by the toggle member 34 or the operator's fingers, and the indication of the scale 343 is clearer and more accurate.

[0047] In some embodiments, the side wall of the saliva suction tube body 1 is further provided with a plurality of auxiliary saliva suction hole groups 4 corresponding to the rotating plate 331 , and the auxiliary saliva suction hole group 4 includes a plurality of evenly distributed auxiliary saliva suction holes 41 , and the projection of the auxiliary saliva suction hole group 4 on the end surface of the end cover 2 is staggered with the main saliva suction hole 21 .

[0048] Specifically, the aperture of the auxiliary saliva suction hole 41 is smaller than the minimum size of the implanted small component. The auxiliary saliva suction holes 41 in the auxiliary saliva suction hole group 4 are densely arranged and have a small aperture, which can assist the main saliva suction hole 21 in absorbing liquid barriers such as blood and water mist in the patient's air, thereby improving the efficiency and effect of saliva suction, ensuring a clear operating field of vision, and sharing the negative pressure suction force at the main saliva suction hole 21, thereby avoiding the problem of local mucosal edema caused by multiple negative pressure suctions on the same part of the patient's oral cavity, and also avoiding the problem of conventional single-hole straws being easily blocked by bone chips and blood clots and unable to suck saliva.

[0049] Furthermore, adjusting the position of the baffle 31 according to the different positions of the auxiliary saliva suction hole group 4 can also bring different saliva suction effects. In the preferred embodiment, the projection of the auxiliary saliva suction hole group 4 on the end surface of the end cover 2 is staggered with the main saliva suction hole 21. When the main saliva suction hole 21 is in a fully open state, the auxiliary saliva suction hole 41 is in a fully closed state, and when the main saliva suction hole 21 is in a fully closed state, the auxiliary saliva suction holes 41 in the auxiliary saliva suction hole group 4 are all in an open state, completely avoiding the accidental suction of small implanted parts, and ensuring the normal operation of saliva suction. Of course, in a secondary embodiment, the auxiliary saliva suction holes 41 can be evenly distributed on the outer peripheral wall of the saliva suction tube body 1. At this time, regardless of the opening and closing of the main saliva suction hole 21, a fixed number of auxiliary saliva suction holes 41 will be in an open state. In another secondary embodiment, the projection of the secondary saliva suction hole group 4 on the end surface of the end cover 2 coincides with the main saliva suction hole 21. At this time, the secondary saliva suction hole 41 and the main saliva suction hole 21 are opened and closed at the same time. When the main saliva suction hole 21 is completely closed, the secondary saliva suction hole 41 is also completely closed, and the entire saliva suction tube is in a fully closed state, which is convenient for the storage and cleaning of the saliva suction tube after oral treatment.

[0050] In some preferred embodiments, the main saliva suction hole 21 and the adjustment baffle 31 are both fan-shaped.

[0051] Specifically, the main saliva suction hole 21 and the adjustment baffle 31 are fan-shaped, and when the adjustment baffle 31 rotates, the opening size of the main saliva suction hole 21 can be better adjusted. In some other secondary embodiments, the main saliva suction hole 21 and the adjustment baffle 31 can be set as a strip structure.

[0052] In summary, the embodiment of the utility model provides an adjustable saliva suction tube. During the oral treatment process, the operator first presses the toggle member 34 downward, and then pushes the toggle member 34 to rotate in the slide groove 11 to drive the adjustment baffle 31 to rotate, and adjusts the opening size of the main saliva suction hole 21 according to the size of the smallest implanted small component currently used, and judges whether the position of the adjustment baffle 31 is adjusted accurately according to the scale 343 of the sealing baffle 342 and the scale indicator line 16 on the saliva suction tube body 1. When the position of the adjustment baffle 31 is adjusted accurately, the operator releases the toggle member 34, and the toggle member 34, the adjustment baffle 31 and the limit column 32 will be in the elastic sealing member 34 1 and the magnet sheet 233 move upward, the outer tooth 322 on the limiting column 32 meshes with the inner tooth 231 in the mounting groove 23, thereby limiting and fixing the position of the adjusting baffle 31, preventing the opening size of the main saliva suction hole 21 from changing during oral treatment, thereby causing the mis-absorption of implanted small components. When a smaller implanted small component is used, the opening size of the main saliva suction hole 21 can be further reduced by pushing the toggle member 34. When the size of the implanted small component used later increases or no implanted small component is used, the opening of the main saliva suction hole 21 can be increased or fully opened, thereby maximizing the saliva suction efficiency and effect. In addition, the setting of the auxiliary saliva suction hole 41 can also provide a certain saliva suction compensation ability when the opening adjustment of the main saliva suction hole 21 becomes smaller, thereby ensuring the efficiency and stability of the entire saliva suction process.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An adjustable saliva suction tube, characterized in that: include: Saliva suction tube body; An end cover, the end cover is fixed to the opening of the saliva suction tube body, and the end surface of the end cover is evenly distributed with a plurality of main saliva suction holes around the axis of the end cover; An opening and closing plate, wherein the opening and closing plate is arranged on the end surface of the end cover close to the saliva suction tube body, and the opening and closing plate is coaxially rotatably connected with the end cover, and the opening and closing plate comprises a plurality of adjustment baffles corresponding to the main saliva suction hole; the opening and closing plate is connected with a transmission member, and a toggle member is arranged at one end of the transmission member away from the opening and closing plate, and the saliva suction tube body is provided with a slide groove corresponding to the toggle member, and one end of the toggle member passes through the slide groove and is arranged on the outside of the saliva suction tube body.

2. The adjustable saliva suction tube according to claim 1, characterized in that: The side wall of the saliva suction tube body is provided with an annular groove, a mounting notch and a limiting notch, one end of the mounting notch passes through the end surface of the saliva suction tube body opening, and a limiting block is provided on the inner side of the end cover corresponding to the limiting notch.

3. The adjustable saliva suction tube according to claim 2, characterized in that: An elastic sealing ring is sleeved in the annular groove.

4. The adjustable saliva suction tube according to claim 1, characterized in that: A mounting groove is provided in the middle of the end surface of the end cover, and an inner side wall of the mounting groove is provided with internal clamping teeth; The opening and closing plate also includes a limiting column, the end of which is arranged in the installation groove, the outer wall of the limiting column is provided with external teeth corresponding to the internal teeth, and the adjusting baffle is evenly fixed to the outer wall of the limiting column.

5. The adjustable saliva suction tube according to claim 4, characterized in that: The end of the limiting column and the bottom wall of the mounting groove are respectively provided with magnet pieces that attract each other.

6. The adjustable saliva suction tube according to claim 1, characterized in that: The transmission member comprises an arc-shaped rotating plate vertically arranged at the outer edge of the adjusting baffle, the rotating plate is in contact with the inner wall of the saliva suction tube body, and the toggle member is fixed to one of the rotating plates.

7. The adjustable saliva suction tube according to claim 6, characterized in that: An elastic sealing member is provided between the toggle member and the slide groove; and the rotating plate provided with the toggle member is provided with a sealing baffle extending in the circumferential direction corresponding to the slide groove.

8. The adjustable saliva suction tube according to claim 7, characterized in that: The plate surface of the sealing baffle is provided with scales, and the body of the saliva suction tube is provided with scale indicating lines at the slide groove.

9. The adjustable saliva suction tube according to claim 6, characterized in that: The side wall of the saliva suction pipe body is further provided with a plurality of auxiliary saliva suction hole groups corresponding to the rotating plate, wherein the auxiliary saliva suction hole groups include a plurality of evenly distributed auxiliary saliva suction holes, and the projection of the auxiliary saliva suction hole groups on the end surface of the end cover is staggered with the main saliva suction holes.

10. The adjustable saliva suction tube according to claim 1, characterized in that: The main saliva suction hole and the regulating baffle are both fan-shaped.

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