Saliva suction head and electric saliva suction device for oral cavity

Abstract

The invention relates to a saliva suction head and an oral electric saliva suction device, and relates to the technical field of oral medical auxiliary instruments. The device comprises a saliva suction tube, a mounting assembly is arranged in the saliva suction tube, the mounting assembly comprises a pair of mounting wheels, a saliva suction ring belt is jointly wound on the outer sides of the two mounting wheels, and the bottom of the saliva suction ring belt extends out of the bottom of a saliva suction head. The saliva suction ring belt is made of materials such as sponge or gauze, oral secretions are sucked through water absorption of the materials, in addition, after the local position of the saliva suction ring belt is full of the oral secretions, the saliva suction ring belt can be rotated, so that the dried part is rotated to be exposed out of the opening in the bottom of the saliva suction pipe, and the secretions are continuously adsorbed. And compared with a traditional mode of sucking through negative pressure of a pipeline, the oral cavity intima of the patient can be better protected, and injuries are reduced.

Description

Technical Field

[0001] The present application relates to the field of oral medical auxiliary equipment, and in particular to a saliva suction head and an electric saliva suction device for oral use. Background Art

[0002] A saliva suction device is a medical auxiliary device used to suck out the patient's oral secretions. Taking oral cancer patients as an example, the inner wall of the oral cavity needs to be repaired and reconstructed after surgical treatment, and it takes a period of time to heal. During the healing process, the patient's resistance is low, and the oral secretions (mainly saliva) increase. When the secretions increase and accumulate for a long time, it is easy to breed bacteria. If the inner wall of the oral cavity, especially the repaired area, is immersed in the secretions for a long time, it is easy to cause reinfection or even necrosis. Therefore, the secretions need to be sucked out both during and after the operation.

[0003] In the related art, a saliva suction device includes a saliva suction head and a saliva suction device body connected to the saliva suction head through a negative pressure tube. The saliva suction port of the saliva suction head gradually narrows to form a tip, thereby improving the saliva suction effect by reducing the caliber.

[0004] The above-mentioned related technologies have the following defects: this type of suction method using air pressure usually increases the air pressure in order to improve the saliva suction effect, but after the air pressure is increased, the suction force is increased, which can easily cause the oral mucosa at the saliva suction position to be pulled or even damaged, so it needs to be improved. Summary of the invention

[0005] In order to improve the problem that the traditional negative pressure saliva suction method is prone to damage to the oral mucosa, the present application provides a saliva suction head and an electric saliva suction device for oral use.

[0006] In the first aspect, the present application provides a saliva suction head adopting the following technical solution: A saliva suction head comprises a saliva suction tube, wherein a mounting assembly is arranged inside the saliva suction tube, and the mounting assembly comprises a pair of mounting wheels, a saliva suction ring belt is arranged around the outer sides of the two mounting wheels, and the bottom of the saliva suction ring belt extends out of the bottom of the saliva suction head.

[0007] By adopting the above technical solution, the saliva suction ring is made of materials such as sponge or gauze, and absorbs oral secretions through the water absorption of the material. Compared with the traditional method of suction through negative pressure of the pipeline, it can better protect the patient's oral lining and reduce damage. In addition, when the local position of the saliva suction ring is full of oral secretions, the saliva suction ring can be rotated so that the dry part is rotated to expose the bottom opening of the saliva suction tube, thereby achieving continuous absorption of secretions.

[0008] Preferably, the saliva suction head further comprises a driving assembly, wherein the driving assembly comprises a clamping wheel, wherein the clamping wheel is rotatably connected to the saliva suction tube, and the clamping wheel abuts against the outer side of the saliva suction ring belt and abuts against the mounting wheel.

[0009] By adopting the above technical scheme, the clamping wheel and the mounting wheel are respectively abutted against the inner and outer sides of the saliva suction ring belt to clamp the saliva suction ring belt, and then the subsequent electric rotation of the saliva suction ring belt can be facilitated. The electric rotation of the clamping wheel or the mounting wheel can be achieved by cooperating with an external motor and a flexible shaft, which can improve the rotation efficiency and convenience of the saliva suction ring belt, and the saliva suction efficiency is also improved accordingly.

[0010] Preferably, a negative pressure tube is provided on the top of the saliva suction tube, and the negative pressure tube abuts against the saliva suction ring belt.

[0011] By adopting the above technical solution, after the saliva suction ring absorbs oral secretions, the negative pressure tube can perform negative pressure extraction on the top of the saliva suction ring to quickly extract the absorbed secretions, thereby ensuring the subsequent continuous adsorption capacity of the saliva suction ring, improving the cleaning efficiency, and ensuring the cleanliness of the oral environment during and after the operation.

[0012] Preferably, the negative pressure tube comprises a main tube and a plurality of branch tubes connected to the main tube, a sliding hole for the main tube to pass through and slide is provided at the top of the saliva suction tube, the branch tubes abut against the saliva suction ring belt, and a tightening elastic member for pushing the negative pressure tube toward the saliva suction ring belt is provided between the saliva suction tube and the negative pressure tube.

[0013] By adopting the above technical solution, the elastic member is pressed to push the negative pressure tube toward the saliva suction ring, so that the negative pressure tube can better absorb and discharge the secretions in the saliva suction ring, so as to effectively empty the filled area of ​​the saliva suction ring as much as possible.

[0014] Preferably, the negative pressure tube is rotatably connected to a pressure wheel, and the pressure wheel abuts against the outside of the saliva suction ring belt and the mounting wheel.

[0015] By adopting the above technical solution, the setting of the pressure wheel makes the saliva suction ring belt more stably fit the outer side of the installation wheel during the negative pressure suction process, avoiding the instability or falling off of the saliva suction ring belt when the suction force is large, ensuring the stability and reliability of the saliva suction ring belt during the rotation process, thereby improving the saliva suction effect. At the same time, during actual installation, the pressure wheel and the clamping wheel can be respectively placed on both sides of the branch pipe, and the pressure wheel and the clamping wheel are used to press down the saliva suction ring belt, so that the branch pipe is located between the pressure wheel and the clamping wheel to remove the secretions in the saliva suction ring belt, which can increase the upper limit of the suction force that the present application can withstand. Even if the suction force is increased, it will not cause damage to the stability of the device or the patient's oral lining due to adsorption and traction.

[0016] Preferably, the top of the saliva suction pipe is closed and a demister hole is provided on the side wall, the inner diameter of the demister hole is larger outside and smaller inside, and a regulating valve is provided in the demister hole.

[0017] By adopting the above technical solution, the negative pressure in the negative pressure tube can be replenished from multiple defogger holes on both sides, so that the suction distribution everywhere is more even, and it will not be a single local negative pressure like the traditional bottom negative pressure saliva suction method. It effectively reduces the risk of excessive suction at the bottom of the saliva suction tube in the traditional way, which may cause the oral cavity membrane to be pulled. At the same time, the mist and water vapor inside the mouth can be sucked away through the defogger holes, thereby improving the clarity of vision during the operation.

[0018] Preferably, a spring sheet is arranged inside the saliva suction tube, and the spring sheet abuts against a section of the saliva suction ring belt located between the two mounting wheels.

[0019] By adopting the above technical solution, the spring piece and the section of the saliva suction ring belt located between the two mounting wheels are offset against each other, so that the saliva suction ring belt is tightened, thereby being more stable during rotation and less likely to slip, thereby improving the working reliability and service life of the saliva suction ring belt.

[0020] Preferably, there are a plurality of saliva suction ring belts, and there is a pair of spring plates between adjacent saliva suction ring belts, the two spring plates respectively abut against the corresponding saliva suction ring belts, and a supporting elastic member is provided between the two spring plates.

[0021] By adopting the above technical solution, there can be a gap between adjacent saliva suction rings, avoiding direct contact between the dry part and the wet part of the two adjacent saliva suction rings, effectively improving the adsorption effect of each saliva suction ring without affecting each other. The setting of the supporting elastic member ensures that the two spring pieces are always driven away from each other, so that the effective contact between the spring piece and the saliva suction ring is more stable.

[0022] In a second aspect, the present application provides an electric saliva extractor for oral use, which adopts the following technical solution: An electric saliva ejector for oral use comprises a saliva ejector body, a driving sleeve is connected between the saliva ejector body and a saliva suction head, a flexible shaft is arranged inside the driving sleeve, a clamping wheel is provided with a driving shaft coaxial with the clamping wheel, and the driving shaft is connected to the flexible shaft after extending out of a saliva suction tube, and a driving unit for driving the flexible shaft to rotate is arranged inside the saliva ejector body.

[0023] By adopting the above technical solution, the electric saliva suction device can automatically drive the pressing wheel to rotate, thereby driving the saliva suction ring to rotate continuously, thereby realizing automatic and continuous adsorption of oral secretions. The driving unit drives the flexible shaft to rotate, and the flexible shaft then drives the pressing wheel in the saliva suction head to rotate, so that the saliva suction ring continuously updates the dry adsorption surface, thereby effectively adsorbing oral secretions. In addition, while updating the dry adsorption surface, the saliva suction ring is also "walking" relative to the oral cavity inner membrane. Therefore, the present application can also realize automatic adjustment of the saliva suction range, which is more automatic and comprehensive.

[0024] An electric saliva ejector for oral use comprises a saliva ejector body, wherein a power supply unit for heating a spring piece is arranged inside the saliva ejector body.

[0025] By adopting the above technical solution, during the saliva suction process of the electric saliva suction device, the shrapnel generates heat under the action of the power supply unit, so that the part in contact with the saliva suction ring can be quickly dried, and the generated water vapor can be sucked away in time, thereby effectively improving the drying efficiency and adsorption effect of the saliva suction ring, ensuring continuous and efficient saliva suction performance.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting the water absorption of the saliva suction ring and its material, the saliva is sucked in a mode similar to sticking and wiping. Compared with the traditional method of suction through negative pressure of the pipeline, the saliva suction mode is directly changed. There is no situation where the oral mucosa is damaged by adsorption due to excessive suction, which reduces the damage to the oral mucosa; 2. The drive assembly is set to realize the convenient rotation of the saliva suction ring. With the help of the motor and other drives, the saliva suction ring can rotate automatically, so that the dry part can be automatically rotated continuously to expose the bottom of the saliva suction tube, so as to realize the continuous absorption of secretions; 3. The combination of the negative pressure tube and the saliva suction ring can not only squeeze the saliva suction ring to squeeze out the secretion and absorb the adsorbed liquid, but also clean the residue and debris on the saliva suction ring. For example, in the environment of tooth grinding and other operations, it can also assist in cleaning tooth debris; 4. The design of the demisting hole significantly reduces the air flow at the bottom of the saliva suction tube, and can remove the mist inside the mouth, improving the clarity of vision during surgery. It can also timely absorb the water vapor generated during the heating process of the shrapnel. In addition, the air circulation process can promote faster drying of the saliva suction ring, which has multiple effects; 5. The design of the shrapnel makes the rotation of the saliva suction ring more stable and less prone to slipping, thus achieving the tightening of the saliva suction ring and ensuring the smooth saliva suction process. In addition, the shrapnel can also be used to heat the saliva suction ring, cleverly utilizing the characteristic that the saliva suction ring is stretched and deformed by the shrapnel, so that the part of the saliva suction ring in contact with the shrapnel can be made thinner, so that the heating effect of the shrapnel on this section is better. Therefore, it also has the characteristic of promoting the drying of the saliva suction ring as a whole, and better realizing the continuous rotation of the saliva suction ring to continuously absorb oral secretions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of Example 1 of the present application; Figure 2 This is a structural schematic diagram for illustrating the internal connection relationship between the saliva suction ring and the saliva suction tube in Example 1 of the present application; Figure 3 This is a schematic diagram of the structure of Example 2 of the present application; Figure 4 This is a schematic diagram of the structure used to reflect the internal connection relationship between the saliva suction ring and the saliva suction tube in Example 2 of the present application; Figure 5 This is a structural schematic diagram for illustrating the connection relationship between the clamping wheel and the flexible shaft in Example 2 of the present application; Figure 6 This is a structural schematic diagram for illustrating the connection relationship between the spring piece and the saliva suction ring in Example 2 of the present application; Figure 7 This is a structural schematic diagram used to reflect the connection relationship between the regulating valve and the demisting hole in Example 2 of the present application.

[0028] In the figure: 1, saliva suction pipe; 11, baffle; 12, saliva suction ring belt; 13, demisting hole; 14, regulating valve; 15, sliding hole; 21. Install the wheel; 3. Saliva suction device body; 31. Driving sleeve; 32. Flexible shaft; 33. Trachea; 41. Tightening wheel; 5. Negative pressure pipe; 51. Main pipe; 52. Branch pipe; 53. Tightening elastic member; 54. Pressure wheel; 6. Spring piece; 61. Slide rod; 62. Slide groove; 63. Symmetrical elastic part. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0030] The inventor of the present application has found that the traditional negative pressure saliva suction method is prone to damage the oral mucosa. For this reason, the present application mainly adopts the following saliva suction head and oral electric saliva suction device, which achieves the use of non-negative pressure saliva suction method to replace the traditional negative pressure saliva suction method, which not only better protects the patient's oral lining, but also reduces damage, and realizes the automatic continuous suction function through a manual or electric drive mechanism, further enhancing the stability and safety of the system operation. Example

[0031] Reference Figure 1 and Figure 2The embodiment of the present application provides a saliva suction head, which includes a saliva suction tube 1, and a baffle 11 is provided on the top of the saliva suction tube 1. In actual practical use, the baffle 11 is placed on the outside of the patient's teeth to prevent the saliva suction tube 1 from entering the patient's mouth too deeply. The saliva suction tube 1 itself is flat, which is convenient for the patient to place it between the tongue and the upper palate. A mounting assembly is provided inside the saliva suction tube 1, and the mounting assembly includes a pair of mounting wheels 21. Both mounting wheels 21 are rotatably connected to the inner wall of the saliva suction tube 1 and are installed on the inner center line of the saliva suction tube 1. A dry saliva suction ring belt 12 is commonly wound around the outer sides of the two mounting wheels 21, and the saliva suction ring belt 12 can be made of a material with good water absorption performance. Specifically, the saliva suction ring belt 12 uses sponge as the base material, which has good water absorption and softness. In addition to sponges, other materials with high water absorption and good biocompatibility can also be selected, such as gauze, cotton cloth or other fiber fabrics. The mounting wheel 21 can be made of stainless steel, with a smooth surface and corrosion resistance, to ensure that it will not be damaged after long-term use.

[0032] The working principle of this embodiment is: the bottom of the saliva suction ring 12 is extended out of the bottom of the saliva suction tube 1 to absorb the secretion fluid accumulation area inside the oral cavity, and the dry saliva suction ring 12 is used to absorb to replace the traditional method of using air pressure to absorb saliva, thereby better protecting the patient's oral lining and reducing damage.

[0033] In addition, when the local position of the saliva suction ring 12 is full of oral secretions, the saliva suction ring 12 can be rotated so that the dry part is rotated to expose the bottom opening of the saliva suction tube 1, and the wet part is rotated to the inside of the saliva suction tube 1 to achieve the replacement of the working part of the saliva suction ring 12, thereby realizing the function of continuously absorbing secretions and achieving the effect of protecting the oral lining and continuously absorbing secretions.

[0034] The above is the relevant structure of Example 1. Its overall structure is exquisite and easy to mass-produce as disposable products for mass promotion. It can be used during a single operation or in a temporary outing where it is inconvenient to carry a large instrument. Example

[0035] Reference Figure 3 The saliva suction head and the electric saliva suction device for oral use provided in Example 2 of the present application are different from those in Example 1 in that: they also include a saliva suction device body 3 connected to the saliva suction head, and the saliva suction device body 3 is used to provide the saliva suction head with power for automatic rotation of the saliva suction ring belt 12, provide a negative pressure source for suctioning the secretion liquid adsorbed by the saliva suction ring belt 12, and other related modules for processing and filtering the secretion liquid in the existing public technology (because the related modules for processing and filtering the secretion liquid are well known to those skilled in the art and do not belong to the invention of the present application, they are not described in detail in this embodiment). In addition, the internal structure of the saliva suction head is also different.

[0036] Reference Figure 4 In this embodiment, the saliva suction ring belt 12 inside the saliva suction head is arranged as a pair, and a driving assembly is added corresponding to the two saliva suction ring belts 12. The driving assembly includes two clamping wheels 41, and the two clamping wheels 41 are rotatably connected to the inner wall of the saliva suction tube 1 and are respectively located on the outside of the two saliva suction ring belts 12. In addition, the clamping wheel 41 abuts against the outside of the saliva suction ring belt 12 and abuts against the corresponding mounting wheel 21 to clamp the saliva suction ring belt 12. Specifically, the clamping wheel 41 can be made of high-strength plastic and has good wear resistance. The two clamping wheels 41 can be set to be independently driven respectively, or a synchronous belt or other structure can be used to achieve synchronous rotation.

[0037] Reference Figure 4 and Figure 5 A driving sleeve 31 is connected between the saliva suction device body 3 and the saliva suction head, a flexible shaft 32 is arranged inside the driving sleeve 31, a clamping wheel 41 is provided with a driving shaft coaxial with itself and the driving shaft is connected to the flexible shaft 32 after extending out of the saliva suction tube 1, and a driving unit for driving the flexible shaft 32 to rotate is arranged inside the saliva suction device body 3. The driving unit can be a component such as a motor to drive the clamping wheel 41 to rotate, so as to realize the continuous and automatic rotation of the saliva suction ring belt 12, and then realize the replacement of the drying section and the moisture absorption section. Specifically, the driving sleeve 31 can be made of aluminum alloy material, which is light and durable. A bearing can be arranged inside the driving sleeve 31 to ensure that the flexible shaft 32 can rotate smoothly. The flexible shaft 32 can be formed by twisting multiple strands of high-strength steel wires, covered with polyurethane material, and has good flexibility and wear resistance. The flexible shaft 32 is connected to the driving shaft by a spline to ensure that the connection is stable and reliable.

[0038] In addition, refer to Figure 4 In order to dry the moisture absorption section, the present application also provides a negative pressure tube 5 at the top of the saliva suction tube 1. The negative pressure tube 5 includes a main tube 51 and two branch tubes 52 connected to the main tube 51. A sliding hole 15 is provided at the top of the saliva suction tube 1 for the main tube 51 to be inserted and slide freely, and the bottoms of the two branch tubes 52 are respectively against the tops of the corresponding saliva suction ring belt 12. The saliva suction device body 3 is provided with an air pipe 33 connected to the part of the main tube 51 extending out of the saliva suction tube 1 to provide a negative pressure source, and the negative pressure is used to suck the moisture absorption section of the saliva suction ring belt 12 to absorb most of the liquid, thereby restoring the saliva suction ring belt 12 to a state where it can be adsorbed again. In addition, some small particles of impurities that are difficult to absorb can also be extracted together through the negative pressure tube 5 to prevent them from continuing to adhere to the surface of the saliva suction ring belt 12. For example, if teeth are polished during surgery, tooth debris will be generated, and the debris can be sucked out at this time. In addition, an air valve may be provided inside the negative pressure tube 5 or the saliva suction device body 3 to control the amount of air flow in the negative pressure tube 5, thereby flexibly adjusting the suction force according to actual needs.

[0039] In addition, refer to Figure 4The outer side of the main pipe 51 is also sleeved with a pressing elastic member 53, which is a spring. The top of the pressing elastic member 53 presses against the saliva suction tube 1, and the bottom presses against the branch pipe 52, so as to push the negative pressure tube 5 as a whole toward the saliva suction ring belt 12, especially the bottom of the branch pipe 52. The bottom of the branch pipe 52 presses against the saliva suction ring belt 12 to squeeze the moisture absorption section to promote the oral secretion liquid to be squeezed out, so that the branch pipe 52 can immediately absorb the secretion liquid, further improving the effect of the present application on the drying treatment of the saliva suction ring belt 12.

[0040] Reference Figure 4 The bottom of the negative pressure tube 5 is located between the two branch tubes 52 and is rotatably connected to a pressure wheel 54, which abuts between the two saliva suction ring belts 12, so that the clamping wheel 41 and the pressure wheel 54 press down the saliva suction ring belt 12, and the bottom of the branch tube 52 "sucks up" the saliva suction ring belt 12, thereby ensuring that the saliva suction ring belt 12 always maintains a stable and continuous conveying state during the negative pressure extraction process, reducing the risk of deviation of the saliva suction ring belt 12.

[0041] Specifically, the pressure wheel 54 can also be made of high-strength plastic, and the surface is engraved with fine teeth to increase friction, so as to promote the synchronization of the rotation speed of the two saliva suction ring belts 12, so that only one pressing wheel 41 needs to be driven to realize the synchronous rotation of the two saliva suction ring belts 12. The pressing elastic member 53 can preferably be made of spring steel material to form a spiral compression spring, which has a long working life and applies appropriate pressure to put the entire structure in a pre-tightened state. In this way, even if a large suction force is set during the negative pressure extraction process, the saliva suction ring belt 12 will not be easily deformed and disengaged, ensuring the continuous operation capability of the system.

[0042] Reference Figure 6 , a spring sheet 6 is also provided inside the saliva suction tube 1. Specifically, the spring sheet 6 can be made of an elastic metal sheet, such as a spring steel sheet, which has good elasticity and strength. The spring sheet 6 is a pair and is located between the two saliva suction ring belts 12. The two spring sheets 6 are respectively against the middle section of the adjacent saliva suction ring belt 12 to squeeze the saliva suction ring belt 12 to deform and tighten it, so that the rotation of the saliva suction ring belt 12 is more stable and not easy to slip. In addition, the spring sheet 6 can also make a gap between the adjacent saliva suction ring belts 12 to avoid direct contact between the dry part of one saliva suction ring belt 12 and the wet part of the other saliva suction ring belt 12, thereby affecting the subsequent adsorption effect.

[0043] Reference Figure 6The installation method of the spring piece 6 is that a slide bar 61 is provided at both ends of the spring piece 6, and a slide groove 62 for the slide bar 61 to slide is symmetrically provided on the inner wall of the saliva suction tube 1. The ends of the slide bar 61 can be respectively pressed into the slide grooves 62 on both sides to realize the installation of the ends of the spring piece 6, and it is more stable after installation. A supporting elastic member is also provided between the two spring pieces 6, and the symmetrical elastic member 63 can be selected as a spring to further open the middle position of the two spring pieces 6 outward, so that the spring piece 6 has a more stable squeezing and tightening effect on the saliva suction ring belt 12. In terms of size, the width of the spring piece 6 can be slightly larger than the thickness of the saliva suction ring belt 12 to ensure that the saliva suction ring belt 12 rotates smoothly therebetween. In addition, the spring piece 6 itself can be made of a conductive metal material, and accordingly, a power supply unit is provided inside the saliva suction device body 3, and the power supply unit is electrically connected to the spring piece 6, so that the spring piece 6 can be heated when powered on, so that when the spring piece 6 squeezes and tightens the saliva suction ring 12, the saliva suction ring 12 can also be heated, thereby promoting the drying of the saliva suction ring 12. In other embodiments, a heating wire can also be embedded in the spring piece 6 to heat the inside of the spring piece 6, and the methods of heating the sheet material and the plate in the disclosed technology can be replaced according to actual conditions.

[0044] Reference Figure 7 The side wall of the saliva suction tube 1 is also penetrated with demister holes 13, which are evenly distributed vertically, and the inner diameter of the demister holes 13 is larger outside and smaller inside. During use, the patient can hold the flat saliva suction tube 1 between the tongue and the upper palate, so that the demister holes 13 on the side wall of the saliva suction tube 1 can leak out. By setting such demister holes 13, the negative pressure inside the saliva suction tube 1 can be replenished from the side wall, and no negative pressure traction will be generated on the oral cavity inner membrane. During the air flow, on the one hand, it can accelerate the evaporation of water in the saliva suction ring 12, and on the other hand, it can absorb secretions in a non-negative pressure manner at the bottom of the saliva suction tube 1 while the side of the saliva suction tube 1 discharges excess water vapor in a negative pressure manner, so that the operation field of vision can be kept clear and undisturbed during the operation.

[0045] In addition, refer to Figure 7 A regulating valve 14 is provided in the demister hole 13. The regulating valve 14 allows the operator to adjust the opening degree according to the actual situation to adapt to the working requirements in different environments.

[0046] Specifically, the demisting hole 13 can be circular or elliptical. The main body of the regulating valve 14 can be made of POM engineering plastics with excellent mechanical strength. In this embodiment, it is set as a double-layer rotary switch structure. When opening, you only need to rotate the movable layer to a certain angle to easily adjust the smoothness of the airflow.

[0047] The implementation principle of this embodiment is: This embodiment introduces a saliva suction ring belt 12 to replace the traditional negative pressure suction method, which fundamentally solves the problems of oral mucosal damage caused by excessive air pressure in the past. Combined with the electric drive mechanism, the automatic continuous suction and spitting function is realized, which greatly improves the user experience. In addition, during the rotation of the two saliva suction ring belts 12, the bottom contacting the inner wall of the oral cavity can also be displaced to a certain extent, so that the range of saliva suction can be adjusted automatically, and the saliva suction range is more comprehensive. Finally, the demisting hole 13 design is used to eliminate the interference of visual obstacles at the operating scene, and fully guarantee the maximum effect of medical staff's diagnosis and treatment. The advantages and disadvantages of this embodiment and embodiment 1 are that the cost of this embodiment will be higher, but it is more suitable for people who use it for a long time. The same instrument can be used for a long time during and after the operation, because this embodiment can continue to work without the need for continuous human intervention.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A saliva suction head, comprising a saliva suction tube (1), characterized in that: A mounting assembly is arranged inside the saliva suction tube (1), and the mounting assembly comprises a pair of mounting wheels (21). A saliva suction ring belt (12) is arranged around the outer sides of the two mounting wheels (21), and the bottom of the saliva suction ring belt (12) extends out of the bottom of the saliva suction head.

2. A saliva suction head according to claim 1, characterized in that: The saliva suction head also includes a driving assembly, which includes a clamping wheel (41), the clamping wheel (41) is rotatably connected to the saliva suction tube (1), and the clamping wheel (41) abuts against the outside of the saliva suction ring belt (12) and abuts against the mounting wheel (21).

3. The saliva suction head according to claim 1, characterized in that: A negative pressure tube (5) is arranged at the top of the saliva suction tube (1), and the negative pressure tube (5) abuts against the saliva suction ring belt (12).

4. A saliva suction head according to claim 3, characterized in that: The negative pressure tube (5) comprises a main tube (51) and a plurality of branch tubes (52) connected to the main tube (51); a sliding hole (15) is provided at the top of the saliva suction tube (1) for the main tube (51) to pass through and slide; the branch tubes (52) abut against the saliva suction ring belt (12); and a tightening elastic member (53) is provided between the saliva suction tube (1) and the negative pressure tube (5) for pushing the negative pressure tube (5) toward the saliva suction ring belt (12).

5. A saliva suction head according to claim 4, characterized in that: The negative pressure tube (5) is rotatably connected to a pressure wheel (54), and the pressure wheel (54) abuts against the outside of the saliva suction ring belt (12) and abuts against the mounting wheel (21).

6. A saliva suction head according to claim 3, characterized in that: The saliva suction pipe (1) has a closed top and a demister hole (13) is provided on the side wall; the inner diameter of the demister hole (13) is larger on the outside and smaller on the inside; and a regulating valve (14) is provided in the demister hole (13).

7. The saliva suction head according to claim 1, characterized in that: A spring sheet (6) is arranged inside the saliva suction tube (1), and the spring sheet (6) abuts against a section of the saliva suction ring belt (12) located between the two mounting wheels (21).

8. A saliva suction head according to claim 7, characterized in that: There are a plurality of saliva suction ring belts (12), and a pair of spring plates (6) are provided between adjacent saliva suction ring belts (12). The two spring plates (6) respectively abut against the corresponding saliva suction ring belts (12), and a supporting elastic member is provided between the two spring plates (6).

9. An electric saliva suction device for oral use based on the saliva suction head according to claim 2, characterized in that: The invention comprises a saliva suction device body (3), a driving sleeve (31) being connected between the saliva suction device body (3) and a saliva suction head, a flexible shaft (32) being arranged inside the driving sleeve (31), a driving shaft coaxial with the abutting wheel (41) being arranged, and the driving shaft being connected to the flexible shaft (32) after extending out of the saliva suction tube (1), and a driving unit for driving the flexible shaft (32) to rotate being arranged inside the saliva suction device body (3).

10. An electric saliva suction device for oral use based on the saliva suction head of claim 7, characterized in that: The saliva ejector comprises a saliva ejector body (3), wherein a power supply unit for heating a spring sheet (6) is arranged inside the saliva ejector body (3).

Images