Angle-adjustable dental saliva aspirator head

Abstract

The utility model provides an angle-adjustable dental saliva aspirator head, belongs to the technical field of oral medical instruments, and solves the technical problems that the angle of an existing saliva aspirator cannot be adjusted, the cleaning efficiency is low and the like. Comprising a snake bone mechanism and a driving mechanism, the driving mechanism is hinged to the left side of the snake bone mechanism, the snake bone mechanism and the driving mechanism are sleeved with an outer cover pipe, four traction steel wires which are evenly distributed in the circumferential direction are arranged between the snake bone mechanism and the driving mechanism, a quick connection mechanism is hinged to the left side of the driving mechanism, and a threaded connection snake bone is hinged to the right side of the snake bone mechanism. A flexible liquid flowing pipe is arranged in the snake bone mechanism, one end of the flexible liquid flowing pipe penetrates through the driving mechanism to be fixedly connected with the quick connection mechanism, the other end of the flexible liquid flowing pipe is fixedly connected with the saliva suction pipe, and the driving mechanism is electrically connected with an external controller. The saliva suction device can be quickly connected, the angle can be adjusted, saliva can be cleaned, light can be supplemented and a saliva suction visual field can be provided during saliva suction, and the oral treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oral cavity medical instrument technical field relates to a dental saliva suction device head, especially a dental saliva suction device head of adjustable angle. BACKGROUND

[0002] With the continuous development of intelligent medical instruments, people use more and more new generation of medical instruments in life, in dental treatment, need to prevent too much saliva in the mouth, avoid causing interference to treatment, in today's oral field, the saliva suction pipe is a daily operation necessity in the oral cavity, it is a disposable consumable, can be inserted into the dental saliva suction device and used, but the saliva suction pipe needs to be pulled out for manual angle adjustment to adapt to the oral environment, the angle cannot be adjusted during saliva suction, which prolongs the oral treatment time and affects the oral treatment efficiency.

[0003] Therefore, we propose a dental saliva suction device head with adjustable angle, which can be quickly connected, angle adjusted and saliva cleaned, and light supplemented and saliva suction field provided during saliva suction, facilitating saliva suction and improving oral treatment efficiency. SUMMARY

[0004] The utility model discloses to the above-mentioned problem of prior art, propose a kind of dental saliva suction device head of adjustable angle, the technical problem to be solved by the utility model is: how to realize the adjustment dental saliva suction device head of multiple angles, satisfy the saliva suction requirement of multiple angles.

[0005] The utility model discloses the purpose can be realized by the following technical scheme:

[0006] A dental saliva suction device head with adjustable angle, comprising a snake bone mechanism and a driving mechanism, the driving mechanism is hinged to the left side of the snake bone mechanism, the outer side of the snake bone mechanism and the driving mechanism is sleeved with an outer cover pipe, four traction steel wires are arranged between the snake bone mechanism and the driving mechanism, the left side of the driving mechanism is hinged with a quick connection mechanism, the right side of the snake bone mechanism is hinged with a screw joint snake bone, the right side of the screw joint snake bone is hinged with a saliva suction pipe, a flexible liquid pipe is arranged in the snake bone mechanism, one end of the flexible liquid pipe is fixedly connected with the quick connection mechanism through the driving mechanism, the other end of the flexible liquid pipe is fixedly connected with the saliva suction pipe, and the driving mechanism is electrically connected with an external controller.

[0007] The working principle of the utility model is: when carrying out dental work, saliva needs to be cleaned, the staff connects the device on the external saliva suction device through the quick connecting mechanism, then holds the device, extends the saliva suction pipe and the snake bone mechanism into the oral cavity, controls the driving mechanism to move through the external controller, the driving mechanism drives the corresponding position traction wire to move, the four traction wires drive the snake bone mechanism to move, the snake bone mechanism adjusts the suction angle through the multi-degree of freedom bending, thereby adjusting the angle of the saliva suction pipe, then starts the external saliva suction device, the external saliva suction device sucks the saliva in the oral cavity through the flexible liquid pipe, and the saliva cleaning is completed.

[0008] The snake bone mechanism comprises a plurality of connecting snake bones 1, the connecting snake bone 1 is a ring body, the left and right ends of the connecting snake bone 1 are respectively provided with two symmetrically arranged hinged frames 2 and two symmetrically arranged hinged frames 1, the axis of the hinged holes of the two hinged frames 1 is perpendicular to the axis of the hinged holes of the two hinged frames 2, the distance between the inner side surfaces of the two hinged frames 1 is equal to the distance between the outer side surfaces of the two hinged frames 2, the two hinged frames 2 of the right connecting snake bone 1 are respectively hinged to the two hinged frames 1 of the left connecting snake bone 1 adjacent thereto, the two hinged frames 2 of the leftmost connecting snake bone 1 are hinged to the driving mechanism, and the two hinged frames 1 of the rightmost connecting snake bone 1 are hinged to the screw snake bone, the inside of the connecting snake bone 1 is provided with four steel wire pipes 1 which are circumferentially distributed, and the positions of the steel wire pipes 1 correspond to the two hinged frames 2 and the two hinged frames 1.

[0009] By adopting the above structure, the steel wire pipe 1 is used for traction wire movement, the driving mechanism drives the traction wire to move in the four steel wire pipes 1, thereby driving the plurality of connecting snake bones 1 to move, and the plurality of connecting snake bones 1 are deflected at an angle.

[0010] The left side of the screw snake bone is provided with two symmetrically arranged hinged frames 3, the two hinged frames 3 are respectively hinged to the two hinged frames 1 of the rightmost connecting snake bone 1, the inside of the screw snake bone is provided with four steel wire pipes 2 which are circumferentially distributed, the positions of the steel wire pipes 2 correspond to those of the steel wire pipes 1, and the right end of the outside of the screw snake bone is provided with an external thread 1.

[0011] By adopting the above structure, the external thread 1 is used for connecting the saliva suction pipe, and the steel wire pipes 2 and the steel wire pipes 1 are matched to facilitate traction wire movement.

[0012] The saliva suction pipe comprises a screw joint and an arc-shaped pipe, the arc-shaped pipe is arranged at the right side of the screw joint, the inside of the screw joint is provided with an internal thread 1, the internal thread 1 is screwed with the external thread 1, the right side of the arc-shaped pipe is provided with an obliquely arranged saliva suction nozzle, the front end of the saliva suction nozzle is flat, the front and rear sides of the saliva suction nozzle are respectively provided with a light supplementing lamp and a visual camera, and the light supplementing lamp and the visual camera are electrically connected with the external controller.

[0013] With the above structure, the arc-shaped tube is convenient to adjust the angle and extend into the oral cavity, the flat-shaped saliva suction nozzle is beneficial to increase the suction force and improve the saliva suction efficiency, and the light supplement lamp and the visual camera are respectively used for light supplement and providing the oral cavity visual field during saliva suction.

[0014] The driving mechanism comprises a wire twisting pipe, the right end of the wire twisting pipe is provided with two symmetrical hinged frames four, the two hinged frames four are respectively hinged with two hinged frames two of the leftmost connecting snake bone one, the inner right end of the wire twisting pipe is provided with four steel wire pipes three which are circumferentially distributed, the positions of the steel wire pipes three correspond to the positions of the steel wire pipes one, the middle part of the wire twisting pipe is provided with four circumferentially distributed mounting holes, the positions of the mounting holes correspond to the positions of the steel wire pipes one, three electric winches are fixed in the mounting holes, and an electric wire twisting disc is fixed in the other mounting hole, the inner left side of the wire twisting pipe is provided with an inner thread two, and the three electric winches are electrically connected with an external controller.

[0015] With the above structure, the external controller controls the three electric winches to drive the corresponding traction steel wires to contract and stretch, thereby driving the plurality of connecting snake bone ones to move, so as to achieve the function of controlling the snake bone mechanism to bend and adjust the saliva suction angle with multiple degrees of freedom.

[0016] The quick connecting mechanism comprises a locking pipe and a quick connecting pipe, the quick connecting pipe is slidingly arranged in the locking pipe, the quick connecting pipe comprises a connecting pipe, the left side of the connecting pipe is provided with a blocking ring, the right side of the connecting pipe is provided with a wedge-shaped ring, the locking pipe comprises a locking pipe body, the inside of the locking pipe body is provided with a rubber groove, the rubber groove is provided with sealing rubber, the inside of the locking pipe body is provided with a plurality of circumferentially distributed flexible flaps, the plurality of flexible flaps are located on the right side of the rubber groove, the left side of the locking pipe body is provided with a clamping pipe, the right end of the locking pipe body is provided with an outer thread two, and the outer thread two is screwed with the inner thread two.

[0017] With the above structure, when the external saliva suction device is connected, the pipeline of the external saliva suction device is inserted into the connecting pipe, the connecting pipe is pushed to slide in the clamping pipe, the blocking ring is abutted on the clamping pipe, the wedge-shaped ring is abutted on the plurality of flexible flaps, the plurality of flexible flaps are elastically deformed and lock the wedge-shaped ring, and the sealing rubber is abutted on the connecting pipe.

[0018] The outer cover pipe is made of elastic rubber and is deformed to fit when the snake bone mechanism bends, thereby protecting the internal structure, one end of the three traction steel wires is wound on the corresponding electric winch, one end of the other traction steel wire is wound on the wire twisting disc, and the other ends of the four traction steel wires are respectively inserted through the corresponding steel wire pipes one, two and three and are fixed on the right end of the steel wire pipe two.

[0019] With the above structure, the outer cover pipe has elasticity and is convenient for the snake bone to reset after adjusting the angle, the traction steel wire is used to pull the plurality of connecting snake bone ones, and the plurality of connecting snake bone ones are driven to move when the traction steel wire is contracted and extended, thereby achieving the function of angle adjustment.

[0020] Compared with the prior art, the angle-adjustable dental saliva suction device head has the following advantages:

[0021] 1. The pipeline of the external saliva suction device is inserted into the quick connection mechanism and locked by the quick connection mechanism, so that quick connection is realized.

[0022] 2. The driving mechanism is controlled to move by an external controller, and cooperates with the snake bone mechanism and four traction steel wires, so that the driving mechanism controls the traction steel wires, the snake bone mechanism adjusts the saliva suction angle through multi-degree-of-freedom bending, and cooperates with the saliva suction pipe to realize saliva suction angle adjustment, facilitate saliva suction and improve oral cleaning efficiency.

[0023] 3. The external saliva suction device cooperates with the saliva suction pipe and the flexible liquid carrying pipe, the external saliva suction device sucks saliva through the saliva suction pipe, and the saliva is sucked away from the flexible liquid carrying pipe, and saliva cleaning is completed.

[0024] 4. The light supplementing lamp supplements light during saliva suction, and the visual camera provides a saliva suction visual field, so that saliva suction is facilitated and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of the utility model.

[0026] Figure 2 is a structural schematic diagram of the utility model without the outer cover pipe.

[0027] Figure 3 is a structural schematic diagram of the utility model with the snake bone one.

[0028] Figure 4 is a structural schematic diagram of the utility model with the saliva suction pipe.

[0029] Figure 5 is a structural schematic diagram of the utility model with the snake bone two.

[0030] Figure 6 is a structural schematic diagram of the utility model with the driving mechanism.

[0031] Figure 7 is a structural schematic diagram of the utility model with the quick connection mechanism.

[0032] Figure 8 is a structural schematic diagram of the utility model with the quick connection pipe.

[0033] Figure 9 is a partial cutaway structural schematic diagram of the utility model with the locking pipe.

[0034] In the diagram: 1. Quick-connect mechanism; 2. Outer casing tube; 3. Screw-connected snake bone; 4. Connecting snake bone one; 5. Liquid flow tube; 6. Traction steel wire; 7. Hinge frame one; 8. Hinge frame two; 9. Steel wire tube one; 10. Screw connector; 11. Arc-shaped tube; 12. Saliva suction nozzle; 13. Supplemental light; 14. Hinge frame three; 15. Steel wire tube two; 16. Wire winch; 17. Saliva suction tube; 18. Hinge frame four; 19. Steel wire tube three; 20. Wire winch; 21. Mounting hole; 22. Electric winch; 23. Locking tube; 24. Quick-connect tube; 25. Wedge ring; 26. Blocking ring; 27. Connecting tube; 28. External thread two; 29. ​​Locking tube body; 30. Rubber groove; 31. Clamping tube; 32. Flexible baffle; 33. Drive mechanism. Detailed Implementation

[0035] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0036] like Figures 1-9 As shown, this adjustable-angle dental saliva suction head includes a snake-bone mechanism and a drive mechanism 33. The drive mechanism 33 is hinged to the left side of the snake-bone mechanism. An outer cover tube 2 is fitted over the snake-bone mechanism and the drive mechanism 33. Four traction steel wires 6 are evenly distributed in a circle between the snake-bone mechanism and the drive mechanism 33. A quick-connect mechanism 1 is hinged to the left side of the drive mechanism 33, and a screw-connected snake-bone 3 is hinged to the right side of the snake-bone mechanism. A suction tube 17 is screwed to the right side of the screw-connected snake-bone 3. A flexible liquid-flowing tube 5 is provided inside the snake-bone mechanism. One end of the flexible liquid-flowing tube 5 passes through the drive mechanism 33 and is fixedly connected to the quick-connected mechanism 1. The other end of the flexible liquid-flowing tube 5 is fixedly connected to the suction tube 17. The drive mechanism 33 is electrically connected to an external controller.

[0037] In this embodiment, during dental work, saliva needs to be cleaned. The staff connects this device to the external saliva suction device via the quick-connect mechanism 1, then holds the device and inserts the saliva suction tube 17 and the snake bone mechanism into the oral cavity. The external controller controls the drive mechanism 33 to move, which in turn moves the corresponding traction wires 6. The four traction wires 6 move the snake bone mechanism, allowing it to adjust the suction angle through multi-degree-of-freedom bending, thereby adjusting the angle of the saliva suction tube 17. Then, the external saliva suction device is activated, and it suctions saliva from the oral cavity through the flexible liquid-flowing tube 5 to complete the saliva cleaning.

[0038] The connecting snake bone 4 comprises a ring body, two symmetrically arranged hinged frames 8 and two symmetrically arranged hinged frames 7 are arranged at the left and right ends of the connecting snake bone 4 respectively, the axis of the hinged holes of the two hinged frames 7 is arranged perpendicularly to the axis of the hinged holes of the two hinged frames 8, the distance between the inner side of the two hinged frames 7 is equal to the distance between the outer side of the two hinged frames 8, the two hinged frames 8 of the right connecting snake bone 4 are hinged to the two hinged frames 7 of the left connecting snake bone 4 adjacent thereto respectively, the two hinged frames 8 of the leftmost connecting snake bone 4 are hinged to the driving mechanism 33, the two hinged frames 7 of the rightmost connecting snake bone 4 are hinged to the screw connecting snake bone 3, four steel wire pipes 9 are arranged in the connecting snake bone 4 in a circumferential distribution, and the positions of the steel wire pipes 9 correspond to the two hinged frames 8 and the two hinged frames 7.

[0039] In the embodiment, the steel wire pipe 9 is used for traction of the steel wire 6, the driving mechanism 33 drives the traction of the steel wire 6 in the four steel wire pipes 9, thereby driving the movement of the connecting snake bone 4, and the connecting snake bone 4 is deflected at an angle.

[0040] The screw connecting snake bone 3 is provided with two symmetrically arranged hinged frames 14 on the left side, the two hinged frames 14 are hinged to the two hinged frames 7 of the rightmost connecting snake bone 4 respectively, four steel wire pipes 15 are arranged in the screw connecting snake bone 3 in a circumferential distribution, the positions of the steel wire pipes 15 correspond to the positions of the steel wire pipes 9, and an external thread 1 is arranged on the right end of the screw connecting snake bone 3.

[0041] In the embodiment, the external thread 1 is used for connecting the saliva suction pipe 17, and the steel wire pipes 15 and the steel wire pipes 9 cooperate to facilitate the movement of the steel wire 6.

[0042] The saliva suction pipe 17 comprises a screw joint 10 and an arc-shaped pipe 11, the arc-shaped pipe 11 is arranged on the right side of the screw joint 10, the screw joint 10 is internally provided with an internal thread 1, the internal thread 1 is screwed with the external thread 1, the arc-shaped pipe 11 is provided with an inclined saliva suction nozzle 12 on the right side, the front end of the saliva suction nozzle 12 is flat, a light supplementing lamp 13 and a visual camera are arranged on the front and back sides of the saliva suction nozzle 12 respectively, and the light supplementing lamp 13 and the visual camera are electrically connected with an external controller.

[0043] In the embodiment, the arc-shaped pipe 11 is convenient for adjusting the angle and the extension into the oral cavity, the flat saliva suction nozzle 12 is conducive to increasing the suction force and improving the saliva suction efficiency, and the light supplementing lamp 13 and the visual camera are respectively used for light supplementing and providing the oral cavity visual field during saliva suction.

[0044] The driving mechanism 33 comprises the hank pipe 20, the right end of the hank pipe 20 is provided with two symmetrical hinged frames four 18, the two hinged frames four 18 are respectively hinged with the two hinged frames two 8 of the leftmost connecting snake bone one 4, the inner right end of the hank pipe 20 is provided with four steel wire pipes three 19 which are circumferentially distributed, the positions of the steel wire pipes three 19 correspond to the steel wire pipe one 9, the middle part of the hank pipe 20 is provided with four mounting holes 21 which are circumferentially distributed, the positions of the mounting holes 21 correspond to the steel wire pipe one 9, three electric winches 22 are fixed in the mounting holes 21 respectively, and the other mounting hole 21 is fixed with the hank reel 16, the inner left side of the hank pipe 20 is provided with the internal thread two, and the three electric winches 22 are electrically connected with the external controller.

[0045] In the embodiment, the external controller controls the three electric winches 22 to drive the corresponding position traction steel wire 6 to contract and stretch, thereby driving the several connecting snake bones one 4 to move, achieving the function of controlling the snake bone mechanism to bend and adjust the saliva suction angle with multiple degrees of freedom, and the hank reel 16 is used for paying out and recovering the traction steel wire 6.

[0046] The quick connecting mechanism 1 comprises the locking pipe 23 and the quick connecting pipe 24, the quick connecting pipe 24 is slidingly arranged in the locking pipe 23, the quick connecting pipe 24 comprises the connecting pipe 27, the left side of the connecting pipe 27 is provided with the blocking ring 26, the right side of the connecting pipe 27 is provided with the wedge-shaped ring 25, the locking pipe 23 comprises the locking pipe body 29, the inside of the locking pipe body 29 is provided with the rubber groove 30, the rubber groove 30 is provided with the sealing rubber, the inside of the locking pipe body 29 is provided with a plurality of circumferentially distributed flexible flaps 32, the plurality of flexible flaps 32 are located on the right side of the rubber groove 30, the left side of the locking pipe body 29 is provided with the clamping pipe 31, the right end of the locking pipe body 29 is provided with the external thread two 28, and the external thread two 28 is screwed with the internal thread two.

[0047] In the embodiment, when the external saliva suction device is connected, the pipeline of the external saliva suction device is inserted into the connecting pipe 27, the connecting pipe 27 is pushed to slide in the clamping pipe 31, the blocking ring 26 is abutted on the clamping pipe 31, the wedge-shaped ring 25 is abutted on the plurality of flexible flaps 32, the plurality of flexible flaps 32 are elastically deformed and lock the wedge-shaped ring 25, and the sealing rubber is abutted on the connecting pipe 27.

[0048] The cover pipe 2 is made of elastic rubber and is deformed to fit when the snake bone mechanism bends, thereby protecting the internal structure, one end of the three traction steel wires 6 is wound on the corresponding position electric winch 22, one end of the other traction steel wire 6 is wound on the hank reel 16, and the other end of the four traction steel wires 6 passes through the corresponding position steel wire pipe one 9, steel wire pipe two 15 and steel wire pipe three 19 and is fixed on the right end of the steel wire pipe two 15.

[0049] In the embodiment, the cover tube 2 is elastic, facilitating the adjustment of the angle of the snake bone and the reset of the snake bone, and the traction wire 6 is used to pull a plurality of connecting snake bones 4, and when the traction wire 6 is retracted and extended, the plurality of connecting snake bones 4 are driven to move, so that the function of angle adjustment is realized.

[0050] The working principle of the utility model is: when carrying out dental work, saliva needs to be cleaned, and the staff connects the device to the external saliva suction device through the quick connection mechanism 1, that is, the pipeline of the external saliva suction device is inserted into the connecting pipe 27, the connecting pipe 27 is slid in the clamping pipe 31, the blocking ring 26 is in contact with the clamping pipe 31, the wedge-shaped ring 25 is in contact with the plurality of flexible flaps 32, the plurality of flexible flaps 32 are elastically deformed and lock the wedge-shaped ring 25, and the pipeline of the external saliva suction device is locked through the wedge-shaped ring 25, the sealing rubber is in contact with the connecting pipe 27, then the device is held by hand, the saliva suction pipe 17 and the snake bone mechanism are stretched into the oral cavity, and the driving mechanism 33 is controlled to move through the external controller, the driving mechanism 33 drives the traction wire 6 at the corresponding position to move, that is, the external controller controls the three electric capstans 22 to drive the traction wire 6 at the corresponding position to retract and extend in the four steel wire pipes 9, so that the plurality of connecting snake bones 4 are driven to move, the function of controlling the snake bone mechanism to bend and adjust the saliva suction angle in multiple degrees of freedom is achieved, the wire reel 16 is used to release and recover the traction wire 6, the snake bone mechanism is bent and adjusted in multiple degrees of freedom to adjust the saliva suction angle, so that the angle of the saliva suction pipe 17 is adjusted, and the light supplementing lamp 13 and the visual camera are used for light supplementing and providing the oral cavity visual field during saliva suction, then the external saliva suction device is started, the external saliva suction device sucks saliva in the oral cavity through the flexible liquid conveying pipe 5, and the saliva cleaning is completed.

[0051] In summary, after the pipeline of the external saliva suction device is inserted into the quick connection mechanism 1, the pipeline is locked by the quick connection mechanism 1, and quick connection is realized.

[0052] The driving mechanism 33 is controlled to move through the external controller, and cooperates with the snake bone mechanism and the four traction wires 6, the driving mechanism 33 controls the traction wire 6, so that the snake bone mechanism bends and adjusts the saliva suction angle in multiple degrees of freedom, cooperates with the saliva suction pipe 17, realizes the adjustment of the saliva suction angle, facilitates saliva suction, and improves the oral cavity cleaning efficiency.

[0053] The external saliva suction device cooperates with the saliva suction pipe 17 and the flexible liquid conveying pipe 5, the external saliva suction device sucks saliva through the saliva suction pipe 17, saliva is sucked away through the flexible liquid conveying pipe 5, and the saliva cleaning is completed.

[0054] The light supplementing lamp 13 supplements light during saliva suction, the visual camera provides the saliva suction visual field, facilitates saliva suction, and is efficient and convenient.

[0055] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. An angle adjustable dental saliva aspirator head comprising a serpentine mechanism and a driving mechanism (33), characterized in that, The driving mechanism (33) is hinged on the left side of the snake bone mechanism, the outer side of the snake bone mechanism and the driving mechanism (33) is sleeved with an outer cover pipe (2), four traction steel wires (6) are arranged between the snake bone mechanism and the driving mechanism (33), the left side of the driving mechanism (33) is hinged with a quick connection mechanism (1), the right side of the snake bone mechanism is hinged with a screw joint snake bone (3), the right side of the screw joint snake bone (3) is hinged with a saliva suction pipe (17), the inside of the snake bone mechanism is provided with a flexible liquid pipe (5), one end of the flexible liquid pipe (5) is fixedly connected with the quick connection mechanism (1) through the driving mechanism (33), the other end of the flexible liquid pipe (5) is fixedly connected with the saliva suction pipe (17), and the driving mechanism (33) is electrically connected with an external controller.

2. The adjustable angle dental saliva ejector tip of claim 1, wherein, The snake bone mechanism comprises a plurality of connecting snake bones (4), the connecting snake bones (4) are annular bodies, the left and right ends of the connecting snake bones (4) are respectively provided with two symmetrically arranged hinged frames two (8) and two symmetrically arranged hinged frames one (7), the axis lines of the hinged holes of the two hinged frames one (7) are perpendicular to the axis lines of the hinged holes of the two hinged frames two (8), the distance between the inner side surfaces of the two hinged frames one (7) is equal to the distance between the outer side surfaces of the two hinged frames two (8), the two hinged frames two (8) of the right connecting snake bone (4) are respectively hinged to the two hinged frames one (7) of the left connecting snake bone (4) adjacent thereto, the two hinged frames two (8) of the leftmost connecting snake bone (4) are hinged to the driving mechanism (33), and the two hinged frames one (7) of the rightmost connecting snake bone (4) are hinged to the screw joint snake bone (3), the inside of the connecting snake bone (4) is provided with four steel wire pipes one (9) arranged in a circle, and the positions of the steel wire pipes one (9) correspond to the two hinged frames two (8) and the two hinged frames one (7).

3. An angle adjustable dental saliva aspirator head according to claim 2, wherein, The screw joint snake bone (3) is provided with two symmetrically arranged hinged frames three (14) on the left side, the two hinged frames three (14) are respectively hinged to the two hinged frames one (7) of the rightmost connecting snake bone (4), the inside of the screw joint snake bone (3) is provided with four steel wire pipes two (15) arranged in a circle, the positions of the steel wire pipes two (15) correspond to the positions of the steel wire pipes one (9), and the right end of the screw joint snake bone (3) is externally provided with an outer thread one.

4. The adjustable angle dental saliva ejector tip of claim 3, wherein, The saliva suction pipe (17) comprises a screw joint (10) and an arc-shaped pipe (11), the arc-shaped pipe (11) is arranged on the right side of the screw joint (10), the inside of the screw joint (10) is provided with an inner thread one, the inner thread one is screwed with the outer thread one, the right side of the arc-shaped pipe (11) is provided with an obliquely arranged saliva suction nozzle (12), the front end of the saliva suction nozzle (12) is flat, the front and back sides of the saliva suction nozzle (12) are respectively provided with a light supplementing lamp (13) and a visual camera, and the light supplementing lamp (13) and the visual camera are electrically connected with an external controller.

5. The adjustable angle dental saliva ejector tip of claim 4, wherein, The driving mechanism (33) includes a twisted pipe (20), the right end of the twisted pipe (20) is provided with two symmetrical hinged frames four (18), the two hinged frames four (18) are hinged with the two hinged frames two (8) of the leftmost connecting snake bone one (4) respectively, the inner right end of the twisted pipe (20) is provided with four steel wire pipes three (19) which are distributed in a circle, the positions of the steel wire pipes three (19) correspond to the steel wire pipe one (9), the middle part of the twisted pipe (20) is provided with four mounting holes (21) which are distributed in a circle, the positions of the mounting holes (21) correspond to the steel wire pipe one (9), three electric winches (22) are fixed in the mounting holes (21) respectively, another mounting hole (21) is fixed with a twisted wire reel (16), the inner left side of the twisted pipe (20) is provided with an inner thread two, the three electric winches (22) are electrically connected with an external controller.

6. An angle adjustable dental saliva ejector tip according to claim 5, wherein, The quick connecting mechanism (1) comprises a locking pipe (23) and a quick connecting pipe (24), the quick connecting pipe (24) is slidably arranged in the locking pipe (23), the quick connecting pipe (24) comprises a connecting pipe (27), the left side of the connecting pipe (27) is provided with a blocking ring (26), the right side of the connecting pipe (27) is provided with a wedge-shaped ring (25), the locking pipe (23) comprises a locking pipe body (29), the locking pipe body (29) is internally provided with a rubber groove (30), the rubber groove (30) is internally provided with sealing rubber, the locking pipe body (29) is internally provided with a plurality of flexible flaps (32) which are distributed in a circle, the plurality of flexible flaps (32) are located at the right side of the rubber groove (30), the left side of the locking pipe body (29) is provided with a clamping pipe (31), the right end of the locking pipe body (29) is externally provided with an outer thread two (28), and the outer thread two (28) is screwed with the inner thread two.

7. An angle adjustable dental saliva ejector tip according to claim 6, wherein The cover pipe (2) is made of elastic rubber and is deformed to fit when the snake bone mechanism is bent, so as to protect the internal structure, one end of the three traction steel wires (6) is wound on the corresponding electric winch (22), one end of another traction steel wire (6) is wound on the twisted wire reel (16), and the other end of the four traction steel wires (6) passes through the corresponding steel wire pipe one (9), steel wire pipe two (15) and steel wire pipe three (19) and is fixed at the right end of the steel wire pipe two (15).

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