Oral cavity expansion device for medical department of stomatology

Abstract

The invention relates to the technical field of medical instruments, in particular to a medical stomatology department oral cavity expansion device which comprises a helmet, swing arms are arranged at the left end and the right end of the helmet respectively, reset mechanisms are rotatably mounted between the helmet and the swing arms, a first mounting round box is fixedly connected to the ends, away from the helmet, of the swing arms, and a conveying mechanism is fixedly mounted in the first mounting round box. A supporting mechanism capable of opening the mouth of the patient is installed between the two sets of swing arms and the helmet, medical staff examine the interior of the oral cavity of the patient, in a traditional medical instrument, the oral cavity of the patient is opened simply and coarsely, a disc is rotated to drive a limiting rod and a second abutting wheel to expand outwards through a bent arc abutting groove, and therefore the oral cavity of the patient can be opened. When the second abutting wheels abut against the outer wall of the rubber air conveying pipe, the second abutting wheels and the first abutting wheels in each set are evenly distributed, so that when the first abutting wheels and the second abutting wheels abut against and move on the outer wall of the rubber air conveying pipe, quantitative air can be conveyed into the corrugated pipe, and the mouth of a patient is slowly opened.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an oral expansion device for medical stomatology. Background Art

[0002] With the improvement of living standards, people pay more and more attention to their physical health. Stomatology is one of the disciplines of hospitals. It is mainly a discipline for examining and treating diseases inside the human oral cavity. When conducting oral examinations on patients, patients are often required to open their mouths for a long time. Due to the different structures of the human body, some patients cannot actively open their mouths for a long time. Therefore, an oral dilator is needed to assist the patient to open his mouth. The existing oral dilator is usually composed of two stainless steel handles combined into a pliers. When in use, the doctor needs to hold it all the time, which is more troublesome to use, and the dilation effect is not ideal.

[0003] Chinese patent (publication number CN115517618A), which relates to a medical oral dilation device. The invention provides a medical oral dilation device that is easy to operate, can open the patient's mouth for a long time, can adjust the opening position according to the size of the patient's mouth, and has good adaptability. The invention provides such a medical oral dilation device, including a hinge plate, a hinge rod, a silicone block, etc., the hinge rod is provided with two pieces on the left and right, the shape of the hinge rod is cylindrical, and the middle part of the hinge rod is rotatably sleeved with two hinge plates for assisting the patient to open the mouth. The two hinge plates are symmetrically arranged up and down, and the spacing between the upper and lower hinge plates can be adjusted by rotating the screw rod. Therefore, the patient's mouth can be opened all the time without the doctor operating all the time, which is convenient for the doctor's operation. The sliding plate is moved on the guide plate, so that the opening position can be adjusted according to the size of the patient's mouth, and the adaptability is good.

[0004] During the use of the above-mentioned scheme and traditional medical oral pliers, both require the doctor to pry open the patient's mouth. The process is simple and crude. During use, the patient's mouth may be opened too quickly, with too much force and amplitude, which may cause the patient to experience uncomfortable symptoms such as retching. In order to solve the problem that the above-mentioned scheme and traditional medical devices cause patients to experience uncomfortable symptoms such as retching when used, we propose a medical oral dilation device. Summary of the invention

[0005] The purpose of the present invention is to provide a medical oral dilation device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A medical oral dilation device comprises a helmet, wherein swing arms are respectively arranged at the left and right ends of the helmet, and a reset mechanism is rotatably installed between the helmet and the swing arms, a first mounting circular box is fixedly connected to one end of the swing arm away from the helmet, and a conveying mechanism is fixedly installed inside the first mounting circular box, and a supporting mechanism capable of opening a patient's mouth is installed between two groups of the swing arms and the helmet, and the patient or medical staff can evenly convey air to the supporting mechanism through the conveying mechanism, and the supporting mechanism will slowly open the patient's mouth, making it convenient for medical staff to check the inside of the patient's mouth.

[0007] As a further feature of the present invention, the two groups of reset mechanisms include a second mounting circular box, and the two groups of the second mounting circular boxes are fixedly mounted on the left and right ends of the helmet. A force storage torsion spring is fixedly mounted inside the second mounting circular box, and a clamping plate is provided on the inner wall of the force storage torsion spring. The end of the second mounting circular box away from the helmet is rotatably connected to a connecting disc, and the end of the connecting disc away from the second mounting circular box is fixedly connected to the swing arm. The force storage torsion spring is made of stainless steel, so it has the characteristics of corrosion resistance and high temperature resistance, so the force storage torsion spring can work in extreme environments and will not be affected.

[0008] As a further feature of the present invention, two groups of arc blocks are fixedly connected to one end of the connecting disc close to the second mounting circular box, and the two groups of arc blocks are symmetrically distributed on the outer wall of the connecting disc. The outer wall of the card plate is clamped between the two groups of arc blocks. Since the arc blocks are symmetrically distributed, they can effectively clamp and limit the outer wall of the card plate.

[0009] As a further feature of the present invention, the conveying mechanism includes a rotating block, which is rotatably connected to the inner wall of the first mounting circular box, and the upper and lower ends of the rotating block are fixedly connected to first elastic telescopic arms, and the output end of the first elastic telescopic arm is rotatably connected to a first abutment wheel, and the inner wall of the first mounting circular box is fixedly connected to a rubber air pipe, and the outer wall of the first abutment wheel abuts against the rubber air pipe, and the end of the rotating block away from the first mounting circular box is fixedly connected to a connecting column. Since the rubber air pipe is made of rubber, it can be well reset after being squeezed and will not be greatly affected by the first abutment wheel.

[0010] As a further feature of the present invention, the outer wall of the connecting column is fixedly connected to a plurality of second elastic telescopic arms, the outer wall of the second elastic telescopic arm is rotatably connected to a second abutment wheel, the end of the second abutment wheel away from the second elastic telescopic arm is fixedly connected to a limiting rod, the end of the limiting rod away from the second abutment wheel is fixedly connected to a limiting circular block, the outer wall of the connecting column is fixedly connected to a fixed circular plate, the outer wall of the fixed circular plate is provided with a plurality of rectangular grooves, the interior of the fixed circular plate is slidably connected to a plurality of sliding rods, the walls between the plurality of sliding rods are fixedly connected to limiting circular rings, the rectangular grooves can limit the limiting rods, and when the limiting rods slide on the inner wall of the rectangular grooves, the rectangular grooves can limit the limiting rods and also have a guiding function.

[0011] As a further feature of the present invention, the inner wall of the limit ring is slidably connected with a plurality of engaging tooth blocks with a reset function, a third reset spring is fixedly connected between the limit ring and the fixed disc, the outer wall of the connecting column is also rotatably connected with a rotating disk, the outer wall of the rotating disk is fixedly connected with a gear ring, each group of the engaging tooth blocks is engaged with the outer wall of the gear ring, a plurality of arc-shaped abutment grooves are provided inside the gear ring, and the outer wall of each group of the limit rods is slidably connected between the corresponding arc-shaped abutment grooves and the inner wall of the rectangular slide groove. When the gear ring is rotated, the gear ring will drive the arc-shaped abutment groove to rotate. Since the arc-shaped abutment groove is arc-shaped, the inner wall of the arc-shaped abutment groove will abut against the limit rod, thereby pushing the limit rod to move, which has the function of driving the limit rod.

[0012] As a further feature of the present invention, the support mechanism includes two groups of retractable tubes, a first connecting plate is fixedly connected between the two groups of retractable tubes, a second connecting plate is fixedly connected between the two groups of swing arms, the second connecting plate and the first connecting plate are both slidably connected to a supporting curved plate with a reset function, and a dental mirror is fixedly installed on the upper end of the supporting curved plate inside the first connecting plate, and the dental mirror can effectively help the doctor observe the upper end of the patient's oral cavity.

[0013] As a further feature of the present invention, the outer wall of the shrink tube is rotatably connected to a bellows, the rubber air pipe and the bellows are fixedly connected via a pipe, the upper end of the bellows is fixedly connected to a connecting frame, and the end of the connecting frame away from the bellows is rotatably connected to the second connecting plate. The bellows has the characteristic of contraction and extension, and can extend or shorten as the internal air pressure increases or decreases.

[0014] As a further feature of the present invention, a first contraction arm is fixedly connected to the bottom end of the inner wall of the bellows, a clamping column is fixedly connected to the upper end of the first contraction arm, and an air vent is opened at the upper end of the bellows, the outer wall of the clamping column is slidably connected to the air vent, and a plurality of second contraction arms are fixedly connected to the top end of the first contraction arm and the inner wall of the bellows. When the air pressure inside the bellows increases and the bellows is extended, the bellows will pull the second contraction arm, and the clamping column will be separated from the contact with the air vent. At this time, the bellows starts to exhaust air from the air vent. After use, you only need to gently press the air valve to discharge the air inside the bellows. As a further feature of this solution, an air valve capable of relieving pressure inside the bellows is fixedly installed on the upper end of the bellows.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the second connecting plate and the supporting curved plate inside the first connecting plate are placed in the patient's mouth, the connecting column drives the rotating block to rotate, and the rotating block drives the two sets of first elastic telescopic arms to rotate. Since the first abutting wheel abuts against the outer surface of the rubber air pipe, when the first elastic telescopic arm drives the first abutting wheel to rotate, the first abutting wheel will abut and rotate along the outer surface of the rubber air pipe, and the first abutting wheel will evenly transport the air inside the rubber air pipe to the inside of the corrugated tube. At this time, the supporting curved plates inside the first connecting plate and the second connecting plate will drive the patient's mouth to open. In this process, both the doctor and the patient can operate according to the above principle by themselves, and the method is simple.

[0016] 2. When the present invention is used, the rotating disc is pulled, and the rotating disc drives the limit rod and the second abutment wheel to expand outward through the curved abutment groove. When the second abutment wheel abuts against the outer wall of the rubber air pipe, the intervals between each group of second abutment wheels and the first abutment wheel are evenly distributed, so that when the first abutment wheel and the second abutment wheel abut and move on the outer wall of the rubber air pipe, a certain amount of air will be transported to the inside of the corrugated tube, slowly opening the patient's mouth to avoid causing discomfort to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a front view of a medical stomatology oral expansion device.

[0018] Figure 2 The present invention is a bottom view of a medical stomatological oral expansion device.

[0019] Figure 3 It is a schematic diagram of the internal structure of a second mounting circular box in a medical stomatology oral expansion device.

[0020] Figure 4 The present invention is a schematic diagram of the position structure of an arc-bending block in an oral expansion device for medical stomatology.

[0021] Figure 5 This is a schematic diagram of the internal structure of a first installation circular box in a medical stomatology oral expansion device.

[0022] Figure 6 It is an exploded diagram of the structure of a delivery mechanism in a medical stomatological oral expansion device.

[0023] Figure 7 The present invention is a schematic diagram of the position structure of a third return spring in an oral expansion device for medical stomatology.

[0024] Figure 8 The present invention is a schematic diagram of the position structure of a supporting mechanism in a medical stomatology oral expansion device.

[0025] Fig. 9 It is a schematic diagram of the internal structure of a bellows in a medical stomatology oral expansion device.

[0026] Fig.10 It is a schematic diagram of the position structure of a clamping post in a medical stomatology oral expansion device.

[0027] In the figure: 1, helmet; 2, swing arm; 3, first connecting plate; 4, strap; 5, discharge rectangular groove; 6, safety buckle; 7, support curved plate; 9, first mounting round box; 10, connecting disc; 11, second mounting round box; 12, power storage torsion spring; 13, air collecting hood; 14, rubber air delivery pipe; 15, connecting column; 16, first elastic telescopic arm; 17, rotating block; 18, second elastic telescopic arm; 19, first abutting wheel; 20, limit rod; 21. Limiting circular block; 22. Magnetic block; 23. Rectangular slide; 24. Limiting circular ring; 25. Gear ring; 26. Rotating disc; 27. Curved arc abutment groove; 28. First fixed ring; 29. ​​Second fixed ring; 30. Snap-on tooth block; 31. Fixed disc; 32. Turning handle; 33. Second abutment wheel; 34. Sliding rod; 35. Ventilation port; 36. third return spring; 37. bellows; 38. connecting frame; 39. contraction tube; 40. first contraction arm; 41. air valve; 42. clamping column; 43. second contraction arm; 44. second connecting plate; 45. clamping plate; 46. bending arc clamping block; 101. return mechanism; 201. conveying mechanism; 301. supporting mechanism. DETAILED DESCRIPTION

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

[0029] Example 1: Please refer to Figure 1 , 2 As shown, in an embodiment of the present invention, a medical oral expansion device for oral cavity department includes a helmet 1, a sponge pad is fixedly attached to the inner wall of the helmet 1, the sponge pad can effectively help the user's head to wear more comfortably, and relieve the squeeze between the head and the helmet 1, the left and right ends of the helmet 1 are respectively provided with swing arms 2, and the two groups of swing arms 2 are symmetrically distributed on the outer wall of the helmet 1, and the outer wall of the swing arm 2 is provided with a plurality of weight-reducing rectangular holes, which can reduce the weight of the swing arm 2 and the weight when the patient wears it, making it easier for the patient to wear the helmet 1, and a reset mechanism 101 is rotatably installed between the helmet 1 and the swing arm 2, and the end of the swing arm 2 away from the helmet 1 is fixedly connected with a first installation A round box 9 is provided, and a conveying mechanism 201 is fixedly installed inside the first installation round box 9. A supporting mechanism 301 which can open the patient's mouth is installed between the two sets of swing arms 2 and the helmet 1. The patient himself or the medical staff can evenly convey air to the supporting mechanism 301 through the conveying mechanism 201. The supporting mechanism 301 will slowly open the patient's mouth, making it convenient for the medical staff to check the inside of the patient's oral cavity. Two sets of straps 4 are fixedly connected to the bottom of the helmet 1. The straps 4 are made of nylon, and the nylon material has excellent wear resistance and can withstand huge tensile force. A safety buckle 6 is installed between the two sets of straps 4. The safety buckle 6 is a prior art and will not be described in detail here.

[0030] Example 2: Please refer to Figure 2 , 3 As shown in Figure 4, the two sets of reset mechanisms 101 include a second mounting round box 11, which is fixedly mounted at the left and right ends of the helmet 1, and the two sets of second mounting round boxes 11 are symmetrically distributed. A force storage torsion spring 12 is fixedly mounted inside the second mounting round box 11. The force storage torsion spring 12 is made of stainless steel. The stainless steel spring wire has good corrosion resistance and is suitable for corrosive or high temperature environments. This material can work in a temperature range of minus 200 degrees Celsius to 300 degrees Celsius while maintaining excellent mechanical properties. A card plate 45 is provided on the inner wall of the force storage torsion spring 12, and the second The end of the mounting circular box 11 away from the helmet 1 is rotatably connected to the connecting disc 10, and the end of the connecting disc 10 away from the second mounting circular box 11 is fixedly connected to the swing arm 2, and the end of the connecting disc 10 close to the second mounting circular box 11 is fixedly connected to two groups of curved blocks 46, and the two groups of curved blocks 46 are symmetrically distributed on the outer wall of the connecting circular box 10, and the outer wall of the clamping plate 45 is clamped between the two groups of curved blocks 46, and the curved blocks 46 are semicircular. Due to the semicircular shape of the curved blocks 46, they can be effectively clamped on the outer wall of the second mounting circular box 11, and can also better fit on the inner wall of the force storage torsion spring 12.

[0031] See also Figure 1 , 2As shown in Figures 5 and 6, the conveying mechanism 201 includes a rotating block 17, which is rotatably connected to the inner wall of the first mounting circular box 9, and the upper and lower ends of the rotating block 17 are fixedly connected to the first elastic telescopic arm 16, and the output end of the first elastic telescopic arm 16 is rotatably connected to the first abutting wheel 19, and the inner wall of the first mounting circular box 9 is fixedly connected to the rubber air pipe 14, and the rubber air pipe 14 is made of rubber material, and the rubber material has good elasticity and can better restore to its original shape after being squeezed. The outer wall of the first abutting wheel 19 abuts against the rubber air pipe 14, and the upper end of the rubber air pipe 14 is set to be U-shaped, and the U-shape can prevent the liquid from sticking to the inner wall of the rubber air pipe 14 and then entering the inside of the rubber air pipe 14, and the upper end of the rubber air pipe 14 is fixedly connected to the air collecting hood 13, and the air collecting hood 13 is fixedly connected to a filter screen, which can filter dust in the air, and also It can block larger water droplets. The end of the rotating block 17 away from the first installation round box 9 is fixedly connected to the connecting column 15. The end of the connecting column 15 away from the rotating block 17 is fixedly connected to the turning handle 32. The outer wall of the connecting column 15 is fixedly connected to a plurality of second elastic telescopic arms 18. The outer wall of the second elastic telescopic arm 18 is rotatably connected to a second abutting wheel 33. The end of the second abutting wheel 33 away from the second elastic telescopic arm 18 is fixedly connected to the limiting rod 20. The plurality of second elastic telescopic arms 18 are distributed in a circle. The second abutting wheel 33 and the limiting rod 20 are also made of rubber material and are elastic. When the second abutting wheel 33 abuts against the limiting rod 20 and the rubber air pipe 14, the rubber material can effectively alleviate the extrusion force between the rubber air pipe 14 and the second abutting wheel 33 and the limiting rod 20, thereby extending the service life of the rubber air pipe 14. See also Figure 5 , 6As shown in Figure 7, one end of the limiting rod 20 away from the second abutting wheel 33 is fixedly connected to the limiting circular block 21, and the outer wall of the connecting column 15 is fixedly connected with a fixed circular piece 31, and the fixed circular piece 31 is located on the left side of the second elastic telescopic arm 18. The outer wall of the fixed circular piece 31 is provided with a plurality of rectangular sliding grooves 23, and the plurality of rectangular sliding grooves 23 are also distributed in a circle, and the fixed circular piece 31 is slidably connected with a plurality of sliding rods 34 inside. Specifically, the fixed circular piece 31 is provided with a plurality of sliding holes, and the sliding rod 34 is slidably connected to the inner wall of the sliding hole. More specifically, the inner wall of the sliding hole and the outer wall of the sliding rod 34 are both coated with lubricating oil. The sliding hole can limit the sliding rod 34, and can also improve the stability of the sliding rod 34 when moving, It also has a guiding function. The lubricating oil can effectively reduce the friction between the sliding rod 34 and the fixed disc 31, thereby extending the service life of the sliding rod 34. A limiting ring 24 is fixedly connected between the plurality of sliding rods 34. The inner wall of the limiting ring 24 is slidably connected with a plurality of snap-fit ​​tooth blocks 30 with a reset function. Specifically, a plurality of mounting grooves are provided inside the limiting ring 24. Each group of snap-fit ​​tooth blocks 30 is slidably connected with the corresponding inner wall of the mounting groove. A first reset spring is fixedly connected between the inner wall of each group of mounting grooves and the corresponding snap-fit ​​tooth block 30. The end of the sliding rod 34 away from the limiting ring 24 is fixedly connected with a second fixed ring 29. A third reset spring 36 is fixedly connected between the limiting ring 24 and the fixed disc 31. Please refer to Figure 7 , and the third return spring 36 is sleeved on the outer wall of the sliding rod 34, the outer wall of the connecting column 15 is also rotatably connected with a rotating disk 26, and the rotating disk 26 is located on the left side of the fixed disc 31, the outer wall of the rotating disk 26 is fixedly connected with a gear ring 25, each group of engaging tooth blocks 30 is engaged with the outer wall of the gear ring 25, and a plurality of curved abutment grooves 27 are opened inside the gear ring 25, the outer wall of each group of limiting rods 20 is slidably connected between the corresponding curved abutment groove 27 and the inner wall of the rectangular slide 23, and the end of the rotating disk 26 away from the fixed disc 31 is fixedly connected with the first fixed ring 28.

[0032] See also Figure 1 , 2As shown in , 8, 9, and 10, the supporting mechanism 301 includes two groups of shrink tubes 39, a first connecting plate 3 is fixedly connected between the two groups of shrink tubes 39, a second connecting plate 44 is fixedly connected between the two groups of swing arms 2, the second connecting plate 44 and the first connecting plate 3 are both slidably connected to a supporting curved plate 7 with a reset function, and a dental mirror is fixedly installed on the upper end of the supporting curved plate 7 inside the first connecting plate 3, the first connecting plate 3, the second connecting plate 44 and the supporting curved plate 7 are all made of metal, the outer walls of the two groups of supporting curved plates 7 are fixedly connected to the second connecting plate 44 and the first connecting plate 3 with mounting springs, the outer walls of the supporting curved plates 7 are fixedly connected to two groups of magnetic blocks 22, the outer wall of the first connecting plate 3 is provided with a plurality of discharge rectangular grooves 5, and the plurality of discharge rectangular grooves 5 are distributed in an array, when in use, the helmet 1 needs to be worn on the patient's head, and then the two groups of supporting curved plates 7 are parallel to the patient's mouth, and then the supporting curved plates 7 are pushed to install. The spring is squeezed and contracted, and because the first connecting plate 3 and the second connecting plate 44 are made of metal, the magnetic block 22 will move in the direction of the second connecting plate 44 and the first connecting plate 3 when the two groups of supporting curved plates 7 are pushed. When the magnetic blocks 22 on the two groups of supporting curved plates 7 and the second connecting plates 44 are adsorbed on the outer wall of the first connecting plate 3, the two groups of supporting curved plates 7 will be inside the patient's oral cavity, and the patient's mouth can be supported and limited. If the two groups of supporting curved plates 7 need to be reset, it is only necessary to pull the two groups of supporting curved plates 7 so that the magnetic blocks 22 are separated from the second connecting plate 44 and the first connecting plate 3. The spring can be installed to limit the supporting curved plates 7 to prevent the supporting curved plates 7 from shaking. It is worth noting that during use, since the patient is in an open state for a long time, the saliva inside the oral cavity cannot be swallowed. At this time, it is only necessary to turn the head downward and discharge the saliva in the oral cavity from the drainage rectangular groove 5. See also Figure 8 , 9 As shown in 10, the outer wall of the shrink tube 39 is rotatably connected to the bellows 37, the rubber air pipe 14 and the bellows 37 are fixedly connected through a pipeline, the upper end of the bellows 37 is fixedly connected to a connecting frame 38, and the end of the connecting frame 38 away from the bellows 37 is rotatably connected to the second connecting plate 44, the bottom end of the inner wall of the bellows 37 is fixedly connected to a first shrink arm 40, the upper end of the first shrink arm 40 is fixedly connected to a clamping column 42, and the upper end of the bellows 37 is provided with an air vent 35, the outer wall of the clamping column 42 is slidably connected to the air vent 35, the first shrink arm 40 and the top end of the inner wall of the bellows 37 are fixedly connected to a plurality of second shrink arms 43, and the upper end of the bellows 37 is fixedly installed with an air valve 41 that can relieve the pressure inside the bellows 37.

[0033] Working principle: When in use, the patient wears the helmet 1 on the head, keeps the second connecting plate 44 and the supporting curved plate 7 inside the first connecting plate 3 parallel to the mouth, and pushes the supporting curved plate 7 to move into the oral cavity. When both sets of supporting curved plates 7 are located inside the patient's oral cavity, it is only necessary to rotate the turning handle 32, and the turning handle 32 will drive the rotating block 17 to rotate through the connecting column 15, and the rotating block 17 will drive the two sets of first elastic telescopic arms 16 to rotate. Since the first abutting wheel 19 is abutted against the outer surface of the rubber air delivery pipe 14, when the first elastic telescopic arm 16 drives the first abutting wheel 19 to rotate, the first abutting wheel 19 will abut along the outer surface of the rubber air delivery pipe 14 When the first abutment wheel 19 rotates, the air in the rubber air delivery tube 14 is evenly transported to the inside of the bellows 37. When the bellows 37 is filled with air, the contraction tube 39 and the second connecting plate 44 are driven to rotate in opposite directions. When the two groups of contraction tubes 39 rotate, the first connecting plate 3 is driven to rotate. The supporting curved plates 7 inside the first connecting plate 3 and the second connecting plate 44 drive the patient's mouth to open. In this process, since the second connecting plate 44 drives the swing arm 2 to rotate while rotating, the swing arm 2 drives the two groups of curved blocks 46 to rotate through the connecting disc 10. The curved blocks 46 drive the force storage torsion spring 12 to rotate through the second connecting plate 44. In order to make the bellows 37 lengthen more evenly and make it more comfortable for the patient to use, it is only necessary to rotate the first fixing ring 28. The first fixing ring 28 drives the toothed ring 25 to rotate through the rotating disk 26, and the toothed ring 25 will abut against the engaging tooth block 30 inside the limiting ring 24. When the toothed ring 25 abuts against the outer wall of the engaging tooth block 30, the engaging tooth block 30 will shrink. While the rotating disk 26 rotates, the curved abutting groove 27 inside the rotating disk 26 drives the limiting rod 20 to move, and the limiting rod 20 will also move on the inner wall of the rectangular slide groove 23. At this time, the second elastic telescopic arm 18 extends outward, and when the second abutting wheel 33 on the outer wall of the second elastic telescopic arm 18 abuts against the rubber air pipe 14, the control of the first fixing ring 28 is released. In order to prevent the first abutting wheel 19 from being disengaged from the abutment with the rubber air pipe 14 and then resetting, the toothed ring 25 on the outer wall of the rotating disk 26 will be engaged by the engaging tooth block 30 is clamped and limited. At this time, since the second abutting wheel 33 on the outer wall of the second elastic telescopic arm 18 and the first abutting wheel 19 on the outer wall of the first elastic telescopic arm 16 are both in abutment with the outer wall of the rubber air delivery pipe 14, when the turning handle 32 is turned, the turning handle 32 will rotate simultaneously through the second elastic telescopic arm 18 and the rotating block 17, and the second elastic telescopic arm 18 and the rotating block 17 will respectively and simultaneously drive the first abutting wheel 19 and the second abutting wheel 33 to rotate. At this time, since the outer wall of the rubber air delivery pipe 14 is in abutment with multiple second abutting wheels 33, the intervals between the first abutting wheel 19 and the multiple second abutting wheels 33 are very uniform. Therefore, when the first abutting wheel 19 and the second abutting wheel 33 rotate on the outer wall of the rubber air delivery pipe 14 at the same time, the air inside the rubber air delivery pipe 14 will be more evenly transported to the inside of the bellows 37, so that the speed at which the bellows 37 becomes longer is more uniform, making the patient more comfortable when using it. When the bellows 37 becomes longer, in order to prevent too much air from being transported inside the bellows 37, resulting in excessive internal air pressure and bursting the bellows 37, when the bellows 37 becomes longer, the second contraction arm 43 in the inner wall of the bellows 37 will drive the first contraction arm 40 to become longer together. When the bellows 37 continues to become longer and the first contraction arm 40 is pulled to the limit, the bellows 37 will pull the second contraction arm 43, and the clamping column 42 will disengage from the abutment with the air vent 35. At this time, the bellows 37 begins to exhaust air from the air vent 35. After use, you only need to gently press the air valve 41 to discharge the air inside the bellows 37, and the force storage torsion spring 12 will drive the connecting disc 10 to reset through two sets of curved arc blocks 46, and the connecting disc 10 will drive the swing arm 2 to reset.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A medical oral dilation device, comprising a helmet (1), characterized in that: The helmet (1) is provided with swing arms (2) at both left and right ends, respectively, and a reset mechanism (101) is rotatably mounted between the helmet (1) and the swing arms (2); one end of the swing arm (2) away from the helmet (1) is fixedly connected to a first mounting round box (9), and a conveying mechanism (201) is fixedly mounted inside the first mounting round box (9); a support mechanism (301) capable of opening the patient's mouth is mounted between the two sets of the swing arms (2) and the helmet (1); the patient or medical staff can evenly convey air to the support mechanism (301) through the conveying mechanism (201), and the support mechanism (301) will slowly open the patient's mouth, making it convenient for medical staff to examine the inside of the patient's oral cavity.

2. A medical oral dilation device according to claim 1, characterized in that: The two groups of reset mechanisms (101) each comprise a second mounting circular box (11), the two groups of the second mounting circular boxes (11) being fixedly mounted at the left and right ends of the helmet (1), a force storage torsion spring (12) being fixedly mounted inside the second mounting circular box (11), a clamping plate (45) being provided on the inner wall of the force storage torsion spring (12), and a connecting disc (10) being rotatably connected to one end of the second mounting circular box (11) away from the helmet (1), and a connecting disc (10) being fixedly connected to the swing arm (2) at one end of the connecting circular box (10) away from the second mounting circular box (11).

3. A medical oral dilation device according to claim 2, characterized in that: Two groups of curved blocks (46) are fixedly connected to one end of the connecting disc (10) close to the second mounting circular box (11); the two groups of curved blocks (46) are symmetrically distributed on the outer wall of the connecting disc (10); and the outer wall of the clamping plate (45) is clamped between the two groups of curved blocks (46).

4. The medical oral cavity expansion device according to claim 1, characterized in that: The conveying mechanism (201) comprises a rotating block (17), the rotating block (17) being rotatably connected to the inner wall of the first installation round box (9), the upper and lower ends of the rotating block (17) being fixedly connected to the first elastic telescopic arm (16), the output end of the first elastic telescopic arm (16) being rotatably connected to the first abutment wheel (19), the inner wall of the first installation round box (9) being fixedly connected to the rubber air pipe (14), the outer wall of the first abutment wheel (19) abutting against the rubber air pipe (14), and the end of the rotating block (17) away from the first installation round box (9) being fixedly connected to the connecting column (15); the connecting The outer wall of the connecting column (15) is fixedly connected to a plurality of second elastic telescopic arms (18); the outer wall of the second elastic telescopic arm (18) is rotatably connected to a second abutting wheel (33); one end of the second abutting wheel (33) away from the second elastic telescopic arm (18) is fixedly connected to a limiting rod (20); one end of the limiting rod (20) away from the second abutting wheel (33) is fixedly connected to a limiting circular block (21); the outer wall of the connecting column (15) is fixedly connected to a fixed circular plate (31); the outer wall of the fixed circular plate (31) is provided with a plurality of rectangular sliding grooves (23); the interior of the fixed circular plate (31) is slidably connected to a plurality of A dry sliding rod (34), a plurality of the sliding rods (34) are fixedly connected to a limit ring (24); the inner wall of the limit ring (24) is slidably connected to a plurality of snap-fit ​​tooth blocks (30) having a reset function; a third reset spring (36) is fixedly connected between the limit ring (24) and the fixed disc (31); the outer wall of the connecting column (15) is also rotatably connected to a rotating disk (26); the outer wall of the rotating disk (26) is fixedly connected to a toothed ring (25); each group of the snap-fit ​​tooth blocks (30) is snap-fitted to the outer wall of the toothed ring (25); and the toothed ring (25) is provided with a plurality of curved arcs for abutment. The outer wall of each group of the limit rods (20) is slidably connected between the corresponding curved abutment groove (27) and the inner wall of the rectangular slide groove (23); the support mechanism (301) comprises two groups of shrink tubes (39), a first connecting plate (3) is fixedly connected between the two groups of shrink tubes (39), a second connecting plate (44) is fixedly connected between the two groups of swing arms (2), the second connecting plate (44) and the first connecting plate (3) are both slidably connected to a supporting curved plate (7) with a reset function, and a dental mirror is fixedly installed on the upper end of the supporting curved plate (7) inside the first connecting plate (3).

5. The medical oral cavity expansion device according to claim 4, characterized in that: The outer wall of the shrink tube (39) is rotatably connected to a bellows (37), and the rubber air delivery pipe (14) and the bellows (37) are fixedly connected via a pipeline.

6. The medical oral cavity expansion device according to claim 5, characterized in that: A connecting frame (38) is fixedly connected to the upper end of the bellows (37), and one end of the connecting frame (38) away from the bellows (37) is rotatably connected to the second connecting plate (44).

7. The medical oral dilation device according to claim 4, characterized in that: A first contraction arm (40) is fixedly connected to the bottom end of the inner wall of the bellows (37), a clamping column (42) is fixedly connected to the upper end of the first contraction arm (40), and a vent (35) is provided at the upper end of the bellows (37).

8. The medical oral dilation device according to claim 7, characterized in that: The outer wall of the clamping column (42) is slidably connected to the air vent (35), and the first retractable arm (40) is fixedly connected to the top end of the inner wall of the bellows (37) with a plurality of second retractable arms (43).

9. The medical oral cavity expansion device according to claim 8, characterized in that: An air valve (41) capable of relieving pressure inside the bellows (37) is fixedly mounted on the upper end of the bellows (37).

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