Mucous membrane traction device for assisting in intraoral scanning and mold taking

Abstract

The mucous membrane traction device for assisting in intraoral scanning and mold taking comprises two oppositely-arranged upper supporting blocks and two oppositely-arranged lower supporting blocks, connecting blocks are arranged between the two upper supporting blocks and the two lower supporting blocks, the two ends of one connecting block are hinged to the two upper supporting blocks through hinge shafts, and the two ends of the other connecting block are hinged to the two lower supporting blocks through hinge shafts. The two ends of the other connecting block are hinged to the two lower supporting blocks through hinged shafts, rotary knobs are arranged at the two ends of the connecting block, and one ends of the rotary knobs are connected with the hinged shafts at the two ends of the connecting block. When the device is used, a mucous membrane is pulled through an upper supporting block and a lower supporting block, the upper supporting block or the lower supporting block can be driven to rotate around a hinged shaft by rotating a rotary knob arranged on a connecting block, then the radian of the device can be adjusted, the device can be conveniently used by different people, the height of the device can be adjusted by pulling the upper supporting block and the lower supporting block up and down, and the device is convenient to use. And after adjustment, a screw penetrates through the positioning hole for locking, adjustment is flexible, and use is convenient.

Description

Technical Field

[0001] The invention relates to the field of oral medical instruments, and in particular to a mucosal pulling device for assisting intraoral scanning and molding. Background Art

[0002] When taking impressions during intraoral scanning, pulling the mucosa and tongue plays an important role. The reasons are as follows: pulling the mucosa and tongue can improve visualization in the oral cavity and help ensure that enough details are captured during the scan, especially at the edges of teeth, gums, and soft tissues; the tongue and other oral soft tissues may block key areas during the scan, and pulling can reduce such interference and ensure the accuracy of the scan. Therefore, reasonable pulling of the mucosa can play a role similar to the mucosa shaping in the traditional impression process, which can assist technicians in determining the edge of the denture base and increase the accuracy of the model.

[0003] However, in current clinical practice, mouth mirrors are still used as traction devices, which have the disadvantages of single function, poor traction effect, difficulty in adhering to the mucosa, poor comfort, and inability to process the saliva secreted by the patient's oral cavity. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a mucosal traction device for assisting intraoral scanning and impression taking, so as to solve the above problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides a mucosal traction device for assisting intraoral scanning and taking impressions, comprising: two upper support blocks arranged opposite to each other, two lower support blocks arranged opposite to each other, a connecting block is arranged between the two upper support blocks and the two lower support blocks, two ends of one of the connecting blocks are hinged to the two upper support blocks through a hinge shaft, and two ends of the other connecting block are hinged to the two lower support blocks through a hinge shaft, two ends of the connecting block are provided with knobs, one end of the knob is connected to the hinge shafts at both ends of the connecting block, and a handle is rotatably arranged on the top of one of the connecting blocks;

[0006] A connecting plate is slidably provided on the inner top of the two lower support blocks, and the tops of the two connected plates are respectively slidably connected to the inner bottoms of the two upper support blocks, and positioning holes are provided on one side of the upper support block and the lower support block, as well as on the connecting plate;

[0007] A plurality of first suction holes are opened on one side of the bottom of the lower support block, a plurality of second delivery pipes are arranged inside the lower support block, a first delivery pipe is arranged inside the lower support block, one end of the plurality of second delivery pipes is connected to the first delivery pipe, the other end of the second delivery pipe is connected to the first suction hole, an extraction component is arranged on the lower support block, and the extraction component is connected to the first delivery pipe.

[0008] Furthermore, an installation box is provided on the other side of the bottom of the lower support block, a storage box is provided on one side of the installation box, the extraction component is arranged inside the installation box, the extraction component is connected to the storage box and the first conveying pipe, and an air hole is opened on the top of the storage box.

[0009] Further, the extraction assembly includes a motor installed at one end of the interior of the installation box, and a water extraction box and an air extraction box installed at the other end of the interior of the installation box;

[0010] The output end of the motor is connected to a rotating shaft, the rotating shaft passes through the water pumping box and extends to the inside of the air pumping box, one end of the rotating shaft is provided with a plurality of water pumping blades, and the water pumping blades are located inside the water pumping box;

[0011] A water supply pipe is arranged on one side of the water pumping box, one end of which is connected to the storage box, and a water pumping pipe is arranged on the other end of the water pumping box, one end of which extends to the interior of the lower support block and is connected to the first delivery pipe.

[0012] Furthermore, a plurality of second suction holes are arranged at the bottom of the lower support block, and the second suction holes are communicated with the second conveying pipe.

[0013] Further, a plurality of air extraction blades are arranged at the other end of the rotating shaft, and the air extraction blades are located inside the air extraction box, an air extraction pipe is arranged at one side of the air extraction box, and the air extraction pipe runs through the installation box, and an air supply pipe is arranged at the other side of the air extraction box, and a first air supply pipe is arranged inside the lower support block, and one end of the air supply pipe extends to the inside of the lower support block and communicates with the first air supply pipe;

[0014] One of them is that the second delivery pipe is connected to a third delivery pipe.

[0015] Furthermore, a mounting groove is provided at the bottom of the lower support block, a mounting box is arranged inside the mounting groove, a sponge block is bonded inside the mounting box, an extrusion plate is arranged on one side inside the mounting groove, the extrusion plate is hollow inside, a plurality of third suction holes are provided on one side of the extrusion plate close to the extrusion plate, and the other side of the extrusion plate is connected to the third conveying pipe;

[0016] The extrusion plate is connected to the first gas delivery pipe at intervals.

[0017] Furthermore, a transverse cylinder is arranged inside the lower support block, a first piston column is slidably arranged inside the transverse cylinder, one end of the first piston column extends out of the interior of the transverse cylinder and is connected to the other side of the extrusion plate, and one end of the first air delivery pipe is connected to the transverse cylinder;

[0018] A spring is arranged inside the horizontal cylinder, and one end of the spring is connected to the other end of the first piston column;

[0019] The horizontal cylinder is connected to the second conveying pipe through a pipeline.

[0020] Further, a vertical cylinder is arranged inside the lower support block, a second piston column is slidably arranged inside the vertical cylinder, a side block is arranged on one side of the installation box, one end of the second piston column is connected to the bottom of the side block, the bottom of the vertical cylinder is connected to a second air supply pipe, and one end of the second air supply pipe is connected to the first air supply pipe;

[0021] A first spring is arranged inside the vertical cylinder, and one end of the first spring is connected to the other end of the second piston column;

[0022] The vertical cylinder is communicated with the horizontal cylinder through a pipeline.

[0023] Furthermore, a third air supply pipe is provided at the top of the vertical tube, and one end of the third air supply pipe is connected to one end of the horizontal tube.

[0024] Furthermore, a pressure relief cylinder and a fourth gas delivery pipe are provided at the other end of the horizontal cylinder, the fourth gas delivery pipe covers the pressure relief cylinder, the pressure relief cylinder is communicated with the interior of the horizontal cylinder, and one end of the fourth gas delivery pipe is communicated with the second delivery pipe;

[0025] An air outlet is slidably arranged inside the pressure relief cylinder, an air outlet hole is opened on the outer wall of the air outlet, a second spring is arranged inside the pressure relief cylinder, one end of the second spring is connected to the air outlet, and one end of the air outlet extends out of the pressure relief cylinder and is connected to a sealing disk.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. When in use, the mucosa is pulled by the upper support block and the lower support block, and the upper support block or the lower support block can be driven to rotate around the hinge axis by turning the knob set on the connecting block, so as to adjust the curvature of the device, which is convenient for different people to use. The height of the device can be adjusted by pulling the upper support block and the lower support block up and down. After adjustment, the screw can be used to penetrate the positioning hole to lock it. It is flexible to adjust and easy to use;

[0028] Second, when it is necessary to clean the saliva secreted in the oral cavity, the extraction component is started to extract the gas in the oral cavity outward, and the first suction hole provided at the same time can extract the saliva into the inside of the second water delivery pipe, and then transport it to the inside of the first water delivery pipe, and finally the saliva is transported to the inside of the storage box through the extraction component for storage, which is convenient for subsequent cleaning;

[0029] 3. After the lower support block is placed in the oral cavity, the sponge block contacts the patient's oral cavity, and the sponge block can absorb the saliva, thereby achieving the effect of cleaning the saliva, making it convenient to keep the oral cavity dry and prevent affecting subsequent scanning. The sponge block is attached to the inside of the installation box with Velcro, which is convenient for replacement after use.

[0030] Fourth, when the rotating shaft rotates, it drives the suction blades to rotate, and the gas can be extracted from the outside and transported to the inside of the air supply pipe through the suction blades and the suction box, and then the gas is transported to the inside of the first air supply pipe through the delivery pipe, and further transported to the inside of the horizontal cylinder, and the first piston column is driven to move outward by the air pressure, and the extrusion plate is driven to move by the piston column, and then the extrusion plate is driven to squeeze the sponge block, so as to squeeze out the saliva inside the sponge block, and at the same time, the sponge block can be extracted through the extrusion plate while the saliva is extracted through the third delivery pipe and the third suction hole, so as to facilitate the extraction of the saliva absorbed in the sponge block and facilitate the sponge block to continuously absorb the saliva;

[0031] 5. The gas inside the first gas pipe is first input into the interior of the vertical pipe through the second gas pipe, and then the second piston column is driven to move upward by squeezing, and the installation box and the sponge block are driven to move upward by the second piston column, so that the sponge block is disconnected from the oral cavity, and then squeezed to facilitate drainage. While ensuring the squeezing effect on the sponge block, the collision between the squeezing plate and the oral tissue is avoided.

[0032] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention;

[0034] Figure 2 It is a schematic diagram of a second three-dimensional structure of the present invention;

[0035] Figure 3 is a top view of the upper support block in the present invention;

[0036] Figure 4 It is a schematic diagram of the internal structure of the installation box in the present invention;

[0037] Figure 5 It is a schematic diagram of the internal structure of the water pumping box in the present invention;

[0038] Figure 6 is a top view of the lower support block of the present invention;

[0039] Figure 7 The present invention is attached Figure 6 A magnified view of middle;

[0040] Figure 8 is a bottom view of the lower support block of the present invention;

[0041] Fig. 9 It is a structural schematic diagram of the installation box in the present invention;

[0042] Fig.10 is a front view of the extruded plate of the present invention;

[0043] Fig.11 is a cross-sectional view of the vertical tube in the present invention;

[0044] Fig.12 is a cross-sectional view of the transverse cylinder in the present invention;

[0045] Fig.13 It is a cross-sectional view of the pressure relief cylinder in the present invention.

[0046] In the figure: 1, upper support block; 2, lower support block; 3, connecting plate; 4, handle; 5, positioning hole; 6, first suction hole; 7, installation box; 8, storage box; 9, connecting block; 10, knob; 11, motor; 12, water pumping box; 13, air pumping box; 14, air pumping pipe; 15, air supply pipe; 16, water supply pipe; 17, rotating shaft; 18, water pumping blade; 19, water pumping pipe; 20, air hole; 21, first delivery pipe; 22, second delivery pipe; 23, first air supply pipe; 2 4. Installation box; 25. Third air delivery pipe; 26. Second air delivery pipe; 27. Vertical cylinder; 28. Side block; 29. ​​Third air delivery pipe; 30. Horizontal cylinder; 31. First piston column; 32. Fourth air delivery pipe; 33. Installation groove; 34. Sponge block; 35. Extrusion plate; 36. Second suction hole; 37. Third suction hole; 38. Second piston column; 39. First spring; 40. Pressure relief cylinder; 41. Air outlet cylinder; 42. Air outlet; 43. Sealing disk; 44. Second spring. DETAILED DESCRIPTION

[0047] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific implementation methods of the present invention are now described with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0048] Reference Figure 1-13 As shown, a mucosal traction device for assisting intraoral scanning and taking impressions comprises: two upper support blocks 1 arranged opposite to each other, two lower support blocks 2 arranged opposite to each other, a connecting block 9 is arranged between the two upper support blocks 1 and the two lower support blocks 2, two ends of one connecting block 9 are hinged to the two upper support blocks 1 through a hinge shaft, and two ends of the other connecting block 9 are hinged to the two lower support blocks 2 through a hinge shaft, and knobs 10 are arranged at both ends of the connecting block 9, one end of the knob 10 is connected to the hinge shafts at both ends of the connecting block 9, and a handle 4 is rotatably arranged at the top of one connecting block 9;

[0049] A connecting plate 3 is slidably provided on the inner top of the two lower support blocks 2, and the tops of the two connected plates 3 are slidably connected to the inner bottoms of the two upper support blocks 1, respectively. Positioning holes 5 are provided on one side of the upper support block 1 and the lower support block 2, as well as on the connecting plate 3;

[0050] A plurality of first suction holes 6 are provided on one side of the bottom of the lower support block 2, a plurality of second delivery pipes 22 are arranged inside the lower support block 2, a first delivery pipe 21 is arranged inside the lower support block 2, one end of the plurality of second delivery pipes 22 is connected to the first delivery pipe 21, and the other end of the second delivery pipe 22 is connected to the first suction hole 6, an extraction component is provided on the lower support block 2, and the extraction component is connected to the first delivery pipe 21;

[0051] An installation box 7 is provided on the other side of the bottom of the lower support block 2, a storage box 8 is provided on one side of the installation box 7, an extraction component is arranged inside the installation box 7, the extraction component is connected to the storage box 8 and the first conveying pipe 21, and an air hole 20 is opened on the top of the storage box 8.

[0052] The present invention provides a technical solution. When in use, the mucosa is pulled by the upper support block 1 and the lower support block 2. The upper support block 1 or the lower support block 2 can be driven to rotate around the hinge axis by turning the knob 10 set on the connecting block 9, so that the curvature of the device can be adjusted, which is convenient for different people to use. The height of the device can be adjusted by pulling the upper support block 1 and the lower support block 2 up and down. After adjustment, the device can be locked by using a screw through the positioning hole 5. The adjustment is flexible and convenient to use. When it is necessary to clean the saliva secreted in the oral cavity, the extraction component is started to extract the gas in the oral cavity outward. The first suction hole 6 set at the same time can extract the saliva into the interior of the second water pipe 22, and then transport it to the interior of the first water pipe 21. Finally, the saliva is transported to the interior of the storage box 8 through the extraction component for storage, which is convenient for subsequent cleaning.

[0053] It should be noted that the corners 1 and 2 are rounded, and the larger the rounding angle, the better.

[0054] Preferably: the extraction assembly comprises a motor 11 installed at one end of the installation box 7, a water extraction box 12 and an air extraction box 13 installed at the other end of the installation box 7;

[0055] The output end of the motor 11 is connected to a rotating shaft 17, which passes through the water pumping box 12 and extends to the inside of the air pumping box 13. One end of the rotating shaft 17 is provided with a plurality of pumping blades 18, and the pumping blades 18 are located inside the water pumping box 12;

[0056] A water supply pipe 16 is arranged on one side of the water pumping box 12, one end of which is connected to the storage box 8, and a water pumping pipe 19 is arranged on the other end of the water pumping box 12, one end of which extends to the interior of the lower support block 2 and is connected to the first delivery pipe 21, and a plurality of second suction holes 36 are arranged at the bottom of the lower support block 2, and the second suction holes 36 are connected to the second delivery pipe 22.

[0057] Specifically, the starting motor 11 drives the rotating shaft 17 to rotate. When the rotating shaft 17 rotates, the pumping blades 18 are rotated to generate a negative pressure effect inside the pumping box 12, and then the saliva is transported to the inside of the storage box 8, and the saliva is conveniently extracted through the second suction hole 36.

[0058] It should be noted that the motor 11 can rotate clockwise to achieve the effect of suction, and the motor 11 can rotate counterclockwise to blow air into the oral cavity to dry the saliva.

[0059] Preferably: a plurality of air extraction blades are arranged at the other end of the rotating shaft 17, and the air extraction blades are located inside the air extraction box 13, an air extraction pipe 14 is arranged on one side of the air extraction box 13, and the air extraction pipe 14 runs through the installation box 7, and an air supply pipe 15 is arranged on the other side of the air extraction box 13, and a first air supply pipe 23 is arranged inside the lower support block 2, and one end of the air supply pipe 15 extends to the inside of the lower support block 2 and communicates with the first air supply pipe 23, and a third air supply pipe 25 is arranged on the second delivery pipe 22;

[0060] A mounting groove 33 is provided at the bottom of the lower support block 2, and a mounting box 24 is arranged inside the mounting groove 33. A sponge block 34 is bonded inside the mounting box 24, and an extrusion plate 35 is arranged on one side inside the mounting groove 33. The interior of the extrusion plate 35 is hollow, and a plurality of third suction holes 37 are provided on one side of the extrusion plate 35 close to the extrusion plate 35, and the other side of the extrusion plate 35 is connected to the third conveying pipe 25.

[0061] Specifically, after the lower support block 2 is placed in the oral cavity, the sponge block 34 contacts the patient's oral cavity, and the sponge block 34 can absorb saliva, thereby achieving the effect of cleaning saliva, making it convenient to keep the oral cavity dry and prevent affecting subsequent scanning. The sponge block 34 is attached to the inside of the installation box 24 by Velcro, which is convenient for replacement after use. At the same time, the third delivery pipe 25 and the third suction hole 37 can be used to extract the sponge block 34 through the squeezing plate 35 while extracting the saliva, so that the saliva absorbed in the sponge block 34 can be extracted, and the sponge block can continue to absorb the saliva.

[0062] Preferably: a transverse cylinder 30 is arranged inside the lower support block 2, and a first piston column 31 is slidably arranged inside the transverse cylinder 30, one end of the first piston column 31 extends out of the interior of the transverse cylinder 30 and is connected to the other side of the extrusion plate 35, one end of the first air supply pipe 23 is connected to the transverse cylinder 30, and a spring is provided inside the transverse cylinder 30, and one end of the spring is connected to the other end of the first piston column 31.

[0063] Specifically, when the rotating shaft 17 rotates, the vacuum blades are driven to rotate, and the gas can be extracted from the outside and transported to the inside of the air supply pipe 15 through the vacuum blades and the vacuum box 13. The gas is then transported to the inside of the first air supply pipe 23 through the delivery pipe 15, and further transported to the inside of the horizontal cylinder 30. The first piston column 31 is driven by air pressure to move outward, and the extrusion plate 35 is driven to move by the piston column 31, thereby driving the extrusion plate 35 to squeeze the sponge block 34, so as to squeeze out the saliva inside the sponge block 34.

[0064] Preferably: a vertical cylinder 27 is arranged inside the lower support block 2, a second piston column 38 is slidably arranged inside the vertical cylinder 27, a side block 28 is arranged on one side of the mounting box 24, one end of the second piston column 38 is connected to the bottom of the side block 28, the bottom of the vertical cylinder 27 is connected to the second air pipe 26, one end of the second air pipe 26 is connected to the first air pipe 23, a first spring 39 is arranged inside the vertical cylinder 27, one end of the first spring 39 is connected to the other end of the second piston column 38.

[0065] Specifically, the gas inside the first gas pipe 23 is first input into the interior of the vertical pipe 27 through the second gas pipe 26, and then the second piston column 38 is driven to move upward through squeezing, and the installation box 24 and the sponge block 34 are driven to move upward through the second piston column 38, so that the sponge block 34 is disconnected from the oral cavity, and then squeezed to facilitate drainage. While ensuring the squeezing effect on the sponge block 34, the collision between the squeezing plate 35 and the oral tissue is avoided.

[0066] Preferably: a third gas pipe 29 is provided at the top of the vertical cylinder 27, one end of the third gas pipe 29 is connected to one end of the horizontal cylinder 30, the other end of the horizontal cylinder 30 is provided with a pressure relief cylinder 40 and a fourth gas pipe 32, the fourth gas pipe 32 covers the pressure relief cylinder 40, the pressure relief cylinder 40 is connected to the inside of the horizontal cylinder 30, and one end of the fourth gas pipe 32 is connected to the second delivery pipe 22;

[0067] An air outlet cylinder 41 is slidably arranged inside the pressure relief cylinder 40, an air outlet hole 42 is opened on the outer wall of the air outlet cylinder 41, a second spring 44 is arranged inside the pressure relief cylinder 40, one end of the second spring 44 is connected to the air outlet cylinder 41, and one end of the air outlet cylinder 41 extends out of the pressure relief cylinder 40 and is connected to a sealing disk 43.

[0068] Specifically, when the other end of the second piston column 38 moves to the end of the vertical cylinder 27, the gas inside the vertical cylinder 27 will be input into the interior of the horizontal cylinder 30 through the third air pipe 29 to relieve the pressure. When the other end of the first piston column 31 moves to the inner end of the horizontal cylinder 30, the first piston column 31 cannot continue to move, and the air pressure inside the horizontal cylinder 30 continues to increase. When the air pressure is too high, it will push the air outlet cylinder 41 to move outward. After the air outlet hole 42 on the air outlet cylinder 41 moves out of the pressure relief cylinder 40, the gas inside the horizontal cylinder 30 is released outward through the air outlet hole 42, thereby reducing the air pressure inside the horizontal cylinder 30 and preventing damage to the extraction component. When the air pressure becomes smaller, the second spring 44 drives the air outlet cylinder 41 to reset and prevent the gas from flowing out.

[0069] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A mucosal traction device for assisting intraoral scanning and impression taking, comprising two upper support blocks (1) arranged opposite to each other, and two lower support blocks (2) arranged opposite to each other, characterized in that: A connecting block (9) is provided between the two upper supporting blocks (1) and the two lower supporting blocks (2), the two ends of one connecting block (9) are hinged to the two upper supporting blocks (1) through a hinge shaft, and the two ends of the other connecting block (9) are hinged to the two lower supporting blocks (2) through a hinge shaft, and knobs (10) are provided at both ends of the connecting block (9), one end of the knob (10) is connected to the hinge shafts at both ends of the connecting block (9), and a handle (4) is rotatably provided at the top of one of the connecting blocks (9); A connecting plate (3) is slidably provided on the inner top of the two lower support blocks (2), and the tops of the two connected plates (3) are respectively slidably connected to the inner bottoms of the two upper support blocks (1), and positioning holes (5) are provided on one side of the upper support block (1) and the lower support block (2), as well as on the connecting plate (3); A plurality of first suction holes (6) are provided on one side of the bottom of the lower support block (2); a plurality of second delivery pipes (22) are arranged inside the lower support block (2); a first delivery pipe (21) is arranged inside the lower support block (2); one end of the plurality of second delivery pipes (22) is connected to the first delivery pipe (21); the other end of the second delivery pipe (22) is connected to the first suction hole (6); an extraction component is provided on the lower support block (2); and the extraction component is connected to the first delivery pipe (21).

2. A mucosal traction device for assisting intraoral scanning and impression taking according to claim 1, characterized in that: An installation box (7) is provided on the other side of the bottom of the lower support block (2), a storage box (8) is provided on one side of the installation box (7), the extraction component is arranged inside the installation box (7), the extraction component is connected to the storage box (8) and the first conveying pipe (21), and an air hole (20) is opened on the top of the storage box (8).

3. A mucosal traction device for assisting intraoral scanning and impression taking according to claim 2, characterized in that: The extraction assembly comprises a motor (11) installed at one end of the installation box (7), and a water extraction box (12) and an air extraction box (13) installed at the other end of the installation box (7); The output end of the motor (11) is connected to a rotating shaft (17), the rotating shaft (17) passes through the water pumping box (12) and extends to the interior of the air pumping box (13), one end of the rotating shaft (17) is provided with a plurality of water pumping blades (18), and the water pumping blades (18) are located inside the water pumping box (12); A water supply pipe (16) is arranged on one side of the water pumping box (12), one end of which is connected to the storage box (8), and a water pumping pipe (19) is arranged on the other end of the water pumping box (12), one end of which extends to the interior of the lower support block (2) and is connected to the first delivery pipe (21).

4. A mucosal traction device for assisting intraoral scanning and impression taking according to claim 3, characterized in that: A plurality of second suction holes (36) are arranged at the bottom of the lower support block (2), and the second suction holes (36) are communicated with the second conveying pipe (22).

5. The mucosal traction device for assisting intraoral scanning and impression taking according to claim 3, characterized in that: A plurality of air extraction blades are arranged at the other end of the rotating shaft (17), and the air extraction blades are located inside the air extraction box (13). An air extraction pipe (14) is arranged on one side of the air extraction box (13), and the air extraction pipe (14) passes through the installation box (7). An air supply pipe (15) is arranged on the other side of the air extraction box (13). A first air supply pipe (23) is arranged inside the lower support block (2), and one end of the air supply pipe (15) extends to the inside of the lower support block (2) and is connected to the first air supply pipe (23). A third conveying pipe (25) is arranged in communication with the second conveying pipe (22).

6. The mucosal traction device for assisting intraoral scanning and impression taking according to claim 5, characterized in that: The bottom of the lower support block (2) is provided with a mounting groove (33), a mounting box (24) is arranged inside the mounting groove (33), a sponge block (34) is bonded inside the mounting box (24), an extrusion plate (35) is arranged on one side inside the mounting groove (33), the interior of the extrusion plate (35) is hollow, a side of the extrusion plate (35) close to the extrusion plate (35) is provided with a plurality of third suction holes (37), and the other side of the extrusion plate (35) is connected to the third conveying pipe (25); The extrusion plate (35) is connected to the first gas delivery pipe (23) at an interval.

7. A mucosal traction device for assisting intraoral scanning and impression taking according to claim 6, characterized in that: A transverse cylinder (30) is arranged inside the lower support block (2), a first piston column (31) is slidably arranged inside the transverse cylinder (30), one end of the first piston column (31) extends out of the interior of the transverse cylinder (30) and is connected to the other side of the extrusion plate (35), and one end of the first air delivery pipe (23) is connected to the transverse cylinder (30); A spring is arranged inside the transverse cylinder (30), one end of the spring is connected to the other end of the first piston column (31); The transverse cylinder (30) is connected to the second conveying pipe (22) via a pipeline.

8. The mucosal traction device for assisting intraoral scanning and impression taking according to claim 7, characterized in that: A vertical cylinder (27) is arranged inside the lower support block (2), a second piston column (38) is slidably arranged inside the vertical cylinder (27), a side block (28) is arranged on one side of the installation box (24), one end of the second piston column (38) is connected to the bottom of the side block (28), the bottom of the vertical cylinder (27) is connected to a second air supply pipe (26), and one end of the second air supply pipe (26) is connected to the first air supply pipe (23); A first spring (39) is arranged inside the vertical cylinder (27), and one end of the first spring (39) is connected to the other end of the second piston column (38); The vertical cylinder (27) and the horizontal cylinder (30) are connected via a pipeline.

9. The mucosal traction device for assisting intraoral scanning and impression taking according to claim 8, characterized in that: A third air supply pipe (29) is provided at the top of the vertical cylinder (27), and one end of the third air supply pipe (29) is connected to one end of the horizontal cylinder (30).

10. The mucosal traction device for assisting intraoral scanning and impression taking according to claim 7, characterized in that: The other end of the horizontal cylinder (30) is provided with a pressure relief cylinder (40) and a fourth gas delivery pipe (32), the fourth gas delivery pipe (32) covers the pressure relief cylinder (40), the pressure relief cylinder (40) is communicated with the interior of the horizontal cylinder (30), and one end of the fourth gas delivery pipe (32) is communicated with the second delivery pipe (22); An air outlet cylinder (41) is slidably arranged inside the pressure relief cylinder (40), an air outlet hole (42) is opened on the outer wall of the air outlet cylinder (41), a second spring (44) is arranged inside the pressure relief cylinder (40), one end of the second spring (44) is connected to the air outlet cylinder (41), and one end of the air outlet cylinder (41) extends out of the interior of the pressure relief cylinder (40) and is connected to a sealing disk (43).

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