Oral cavity inner wall mucous membrane extraction device for department of stomatology

Abstract

The invention discloses an oral cavity inner wall mucous membrane extraction device for the stomatology department, and particularly relates to the technical field of oral cavity inner wall mucous membrane extraction devices.The oral cavity inner wall mucous membrane extraction device.The oral cavity inner wall mucous membrane extraction device comprises a hollow barrel, a main rod is in threaded connection with the upper portion of the inner surface of the hollow barrel, and an adjusting assembly for adjusting any angle is fixedly installed on the upper portion of the outer surface of the main rod; a sampling assembly is installed in the middle of the upper end of the main rod, and a clamping assembly is installed at the lower end of the hollow cylinder through threads. According to the oral cavity inner wall mucous membrane extraction device for the stomatology department, the sampling assembly can be matched with the adjusting assembly, movement at any angle in the oral cavity of a patient is achieved, the oral cavity mucous membrane of the patient is scraped, meanwhile, the sampling assembly can be rapidly disassembled and assembled, operation is easy and convenient, and the device is convenient to use. Meanwhile, the clamping assembly is arranged and is matched with the sampling assembly, so that the taken oral mucosa can be immediately detected, the inspection time is shortened, and the sampling detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of oral mucosa extraction devices, and particularly to an oral mucosa extraction device for dental use. Background Technology

[0002] A dental mucosal extraction device is a medical device specifically designed for the field of dentistry, primarily used to extract samples from the mucosa lining the patient's oral cavity. These samples are typically used for further laboratory analysis, such as pathological examination, cytological analysis, or pathogen detection. The device usually consists of a convenient sampling tool (such as a small aspirator or a specialized sampler) and a support system to protect the patient's oral cavity. The extraction process typically involves gentle contact with the mucosal layer of the oral cavity lining, ensuring effective sample acquisition without causing discomfort.

[0003] This extraction device is designed to improve sampling accuracy and efficiency while reducing patient pain and discomfort. Compared to traditional manual sampling methods, oral mucosal extraction devices are generally more precise, quickly and accurately obtaining the required samples and avoiding errors or discomfort that can occur with human operation. The use of this device can significantly improve the efficiency of dentists during clinical examinations or research, especially when multiple samplings are required or large-scale screenings are conducted.

[0004] However, current extraction techniques often rely on cotton swabs to sample the oral mucosa. While cotton swabs are convenient, their use can present several problems. For example, cotton fibers can sometimes remain on the patient's oral cavity, affecting the purity of the sample and potentially causing discomfort or infection. Furthermore, current techniques do not enable rapid testing of oral mucosal samples after extraction; doctors cannot obtain test results immediately after sampling, which may result in patients waiting a considerable amount of time for an accurate diagnosis.

[0005] Chinese Patent Publication No. CN120093356A discloses an oral mucosa sampling device for pathological testing, belonging to the technical field of oral mucosa sampling devices. It includes a sampling swab, an outer sleeve, a sampling gun structure, a reciprocating sampling device, an oral cavity wall-adhering device, and an oral cavity opening support device. The oral cavity opening support device is connected to the sampling gun structure, the reciprocating sampling device is connected to the sampling gun structure, and the oral cavity wall-adhering device is connected to the reciprocating sampling device. The outer sleeve is fixedly installed on the sampling gun structure, and the sampling swab is snapped onto the oral cavity wall-adhering device. This patent document aims to assist testing personnel in opening the patient's mouth and reducing the risk of biting the testing personnel. It provides an oral mucosa sampling device for pathological testing that, while reciprocatingly scraping and extracting oral samples from the oral mucosa, also provides continuous support and expansion for the tightly closed lip muscles and teeth, ensuring that the mouth is open during oral mucosa sampling, allowing the patient to effectively extract samples from the oral mucosa.

[0006] While the device described in the aforementioned patent document can extract oral mucosa from patients during use, in actual use, the cotton swabs inside the device may leave cotton fibers inside the patient's mouth during extraction, causing discomfort to the patient. Summary of the Invention

[0007] The main objective of this invention is to provide a dental mucosa extraction device that can effectively solve the problems in the prior art.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A dental mucosa extraction device includes a hollow cylinder, a main rod threadedly connected to the upper part of the inner surface of the hollow cylinder, an adjustment component for adjusting any angle fixedly installed on the upper part of the outer surface of the main rod, a sampling component installed in the middle of the upper end of the main rod, and a snap-fit ​​component threadedly installed at the lower end of the hollow cylinder.

[0009] Preferably, a limiting groove is formed on the upper left side of the outer surface of the main rod, extending to its right side. A circular groove is formed in the middle of the upper end of the main rod. An inclined guide groove is formed on both the left and right sides of the inner surface of the circular groove. A baffle is fixedly connected to both the left and right sides of the bottom wall of the limiting groove. A wedge block is slidably connected to both the left and right sides of the inner surface of the limiting groove. Three guide rods are fixedly connected to the end of the wedge block on the same side that is close to the baffle on the same side. The three guide rods on the same side all penetrate the baffle on the same side. Three springs are fixedly connected to the ends of the wedge block and the baffle on the same side that are close to each other.

[0010] Preferably, the two wedge blocks are located on opposite sides of the two baffles, and the three springs on the same side are located on the outside of the three guide rods on the same side.

[0011] Preferably, the adjustment assembly includes a hollow sphere fixedly connected to the middle of the outer surface of the main rod, an inner ring movably connected to the outer surface of the hollow sphere, and an engagement pad adhered to the outer surface of the inner ring.

[0012] Preferably, the occlusal pad is made of disposable medical rubber material.

[0013] Preferably, the sampling component includes a cylinder and a magnetic column. A groove for placing the magnetic column is opened in the middle of the upper end of the cylinder. The lower end of the magnetic column is magnetically attracted to the bottom wall of the groove in the middle of the upper end of the cylinder. A scraper is fixedly connected to the upper end of the magnetic column. A rectangular block is fixedly connected to the lower end of the magnetic column. A sliding hole is opened in the middle of the left end of the rectangular block, penetrating to its right end. The left and right sides of the inner surface of the sliding hole are slidably connected to guide rods two. Wedge blocks two are fixedly connected to the ends of the two guide rods two that are far apart from each other. Springs two are fixedly connected to the ends of the rectangular block and the two wedge blocks two that are close to each other. Springs two on the same side are located outside the guide rods two on the same side.

[0014] Preferably, the inclined surface of the lower end of the second wedge block on the same side cooperates with the inclined surface of the first guide groove on the same side.

[0015] Preferably, an annular threaded groove one is provided at the middle of the lower end of the hollow cylinder, and an annular threaded groove two is provided at the middle of the upper end of the hollow cylinder.

[0016] Preferably, the snap-fit ​​assembly includes a disc, a limiting groove 2 extending through to the left side of the middle of the right side of the outer surface of the disc, baffles 2 fixedly connected to the left and right sides of the bottom wall of the limiting groove 2, and pressing blocks slidably connected to the left and right sides of the bottom wall of the limiting groove 2, guide posts 3 fixedly connected to the middle of the end of the pressing block on the same side near the baffle 2 on the same side, the guide posts 3 on the same side all penetrating the baffle 2 on the same side, and springs 3 fixedly connected to the ends of the pressing block and the baffle 2 on the same side that are close to each other, the springs 3 on the same side are respectively located outside the guide posts 3 on the same side, a threaded ring fixedly connected to the outer side of the upper end of the disc, a circular groove 2 opened in the middle of the upper end of the disc, and guide grooves 2 in an inclined manner opened on the left and right sides of the inner surface of the circular groove 2.

[0017] Preferably, the threaded ring is threadedly connected to the first annular threaded groove and the second annular threaded groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, through the sampling component, can cooperate with the adjustment component to achieve arbitrary angle movement in the patient's oral cavity and scrape the patient's oral mucosa. At the same time, the sampling component can be quickly disassembled and installed, making it easy to operate. In addition, through the set snap-fit ​​component, it cooperates with the sampling component to enable the immediate testing of the extracted oral mucosa, shortening the test delivery time and improving the efficiency of sampling and testing.

[0019] 2. The present invention features a snap-fit ​​component installed at the bottom of the hollow cylinder. When it needs to be used in conjunction with the sampling component, the snap-fit ​​component can be quickly disassembled. The installation and operation of the sampling component and the snap-fit ​​component is simple and convenient, which facilitates quick switching between sampling and detection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a rear view schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram showing the installation position of the adjustment component of the present invention; Figure 4 This is a schematic diagram of the overall structure of the sampling component of the present invention; Figure 5 This is a schematic diagram showing the installation position of the sampling component of the present invention; Figure 6 This is a schematic diagram of another state of the snap-fit ​​assembly and sampling assembly of the present invention; Figure 7 This is a schematic diagram showing the positions of the first and second annular threaded grooves of the present invention. Figure 8 This is a schematic diagram of the overall structure of the snap-fit ​​assembly of the present invention; Figure 9 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Hollow cylinder; 11. Annular threaded groove one; 12. Annular threaded groove two; 2. Main rod; 21. Limiting groove one; 22. Guide groove one; 23. Baffle one; 24. Wedge block one; 25. Guide rod one; 26. Spring one; 20. Circular groove one; 3. Adjustment assembly; 31. Hollow sphere; 32. Inner ring; 33. Engaging pad; 4. Sampling assembly; 41. Cylinder; 42. Magnetic column; 43. Scraper; 44. Rectangular block; 45. Guide rod two; 46. Wedge block two; 47. Spring two; 5. Snap-fit ​​assembly; 51. Disc; 52. Limiting groove two; 53. Baffle two; 54. Extrusion block; 55. Guide post three; 56. Spring three; 57. Threaded ring; 58. Guide groove two; 59. Circular groove two. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Example 1, as Figure 1 and Figure 2As shown, a dental mucosa extraction device for oral cavity wall is disclosed. The device includes a hollow cylinder 1, a main rod 2 is threadedly connected to the upper part of the inner surface of the hollow cylinder 1, an adjustment component 3 for adjusting any angle is fixedly installed on the upper part of the outer surface of the main rod 2, a sampling component 4 is installed in the middle of the upper end of the main rod 2, and a snap-fit ​​component 5 is threadedly installed at the lower end of the hollow cylinder 1.

[0024] During use, medical staff can hold the hollow cylinder 1 and insert one end of the sampling component 4 into the patient's mouth. When the sampling component 4 is placed in the patient's mouth, the patient can bite down on the adjustment component 3 to relieve the pain when the sampling component 4 scrapes the mucosa inside the mouth. When scraping the oral mucosa, swinging the hollow cylinder 1 can cause the hollow cylinder 1 to drive the main rod 2 connected to its inner cavity to swing and rotate at any angle on the inner surface of the adjustment component 3, thereby achieving scraping of the mucosa at different locations in the mouth. When scraping the oral mucosa, the sampling component 4 can be removed. Hold the main rod 2 and the hollow cylinder 1 and rotate them in opposite directions to open them. At the same time, remove the snap-fit ​​component 5 from the bottom of the hollow cylinder 1, and then install the sampling component 4 inside the snap-fit ​​component 5. Finally, screw the snap-fit ​​component 5 onto the top of the hollow cylinder 1 and shake the hollow cylinder 1 to fully mix the detection liquid inside the hollow cylinder 1 with the oral mucosa on the surface of the sampling component 4, thereby achieving the effect of sampling and testing immediately.

[0025] Example 2, as Figure 3 , Figure 4 , Figure 5 and Figure 9 As shown, this embodiment includes a limiting groove 21 extending to the right side of the upper left part of the outer surface of the main rod 2, a circular groove 20 in the middle of the upper end of the main rod 2, and inclined guide grooves 22 on the left and right sides of the inner surface of the circular groove 20. Baffles 23 are fixedly connected to the left and right sides of the bottom wall of the limiting groove 21. Wedge blocks 24 are slidably connected to the left and right sides of the inner surface of the limiting groove 21. Three guide rods 25 are fixedly connected to the end of the wedge block 24 on the same side that is close to the baffle 23 on the same side. The three guide rods 25 on the same side all penetrate the baffle 23 on the same side. Three springs 26 are fixedly connected to the ends of the wedge block 24 and the baffle 23 on the same side that are close to each other. Furthermore, the two wedge blocks 24 are located on opposite sides of the two baffles 23, and the three springs 26 on the same side are located outside the three guide rods 25 on the same side.

[0026] Furthermore, the adjustment component 3 includes a hollow sphere 31 fixedly connected to the middle of the outer surface of the main rod 2, an inner ring 32 movably connected to the outer surface of the hollow sphere 31, and an engagement pad 33 adhered to the outer surface of the inner ring 32.

[0027] Furthermore, the occlusal pad 33 is made of disposable medical rubber material.

[0028] Furthermore, the sampling component 4 includes a cylinder 41 and a magnetic column 42. The upper end of the cylinder 41 has a groove for placing the magnetic column 42. The lower end of the magnetic column 42 is magnetically attracted to the bottom wall of the groove in the upper end of the cylinder 41. A scraper 43 is fixedly connected to the upper end of the magnetic column 42, and a rectangular block 44 is fixedly connected to the lower end of the magnetic column 42. A sliding hole is opened in the middle of the left end of the rectangular block 44, penetrating its right end. The left and right sides of the inner surface of the sliding hole are slidably connected to the guide rod 45. The ends of the two guide rods 45 that are far apart from each other are fixedly connected to the wedge block 46. The ends of the rectangular block 44 and the two wedge blocks 46 that are close to each other are fixedly connected to the spring 47. The spring 47 on the same side is located outside the guide rod 45 on the same side.

[0029] Furthermore, the inclined surface at the lower end of the wedge block 46 on the same side cooperates with the inclined surface of the guide groove 22 on the same side.

[0030] When the sampling component 4 needs to be installed during use, the cylinder 41 can be held, and then the lower side of the magnetic column 42 can be aligned with the circular groove 20 and pressed down. The inclined surface of the lower end of the wedge block 46 on the same side cooperates with the inclined surface of the guide groove 22 on the same side. Therefore, when the cylinder 41 is pressed down, the two wedge blocks 46 can be squeezed inward by the pressure of the inclined surface of the guide groove 22. When the two wedge blocks 46 are squeezed inward at the same time, the wedge block 46 on the same side can squeeze the guide rod 45 fixedly connected to it and slide into the sliding hole opened on the surface of the rectangular block 44, and the wedge block 46 on the same side can squeeze the spring 47 on the same side, so that the wedge blocks 46 on both sides can enter the inner cavity of the limiting groove 21. When the two wedge blocks 46 enter the inner cavity of the limiting groove 21, the two wedge blocks 46 on both sides are no longer under the pressure. Therefore, under the action of the spring 47, the two wedge blocks 46 rebound to the initial state, so that the upper ends of the two wedge blocks 46 on both sides fit together with the top wall of the limiting groove 21, thereby completing the installation of the sampling component 4. After the sampling component 4 is installed, the scraper 43 can be placed into the patient's mouth. The patient can bite down on the bite pad 33. When the patient bites down on the bite pad 33, since the inner ring 32 is circular, there will be empty areas along both sides of the inner ring 32 inside the mouth. Then, by swinging the hollow cylinder 1, the hollow cylinder 1 drives the main rod 2 to swing. The hollow sphere 31 fixedly connected to the outer surface of the main rod 2 is movably connected to the inner surface of the inner ring 32. Therefore, the main rod 2 can drive the hollow sphere 31 to swing on the inner surface of the inner ring 32. When the main rod 2 drives the sampling component 4, which is engaged on its surface, to move to the position where the mucosa needs to be scraped from the inner wall of the oral cavity, the main rod 2 can be slowly rotated so that the main rod 2 drives the scraper 43 to scrape the inner wall of the oral cavity, thereby scraping a part of the mucosa on the inner wall of the oral cavity onto the surface of the scraper 43. After scraping the oral mucosa, have the patient release their bite on the occlusal pad 33, then grasp the hollow cylinder 1 and pull out the entire device. When it is necessary to remove the sampling component 4 from the top of the main rod 2, press the wedge blocks 24 on both sides to make the wedge blocks 24 on both sides slide into the inner cavity of the limiting groove 21 at the same time. During the sliding process, the wedge blocks 24 on both sides drive the guide rod 25 on the same side to pass through the baffle 23 on the same side and simultaneously squeeze the spring 26 on the same side until the wedge blocks 24 on the same side and the baffle 23 on the same side fit together. During this process, the three guide rods 25 on the same side squeeze the wedge block 46 on the same side to slide inward. Then grasp the cylinder 41 to pull the sampling component 4 out upward. When it is necessary to scrape the oral mucosa of the next patient, the device must be disinfected and the occlusal pad 33 must be replaced. The occlusal pad 33 is made of disposable medical rubber material, so when the patient bites on the surface of the occlusal pad 33, it can avoid abrasion of the patient's teeth and oral cavity.

[0031] The movable connection between the hollow sphere 31 and the inner ring 32 mentioned above is a conventional connection method in the prior art. In this solution, it is only necessary to ensure that the hollow sphere 31 can swing and rotate arbitrarily on the inner surface of the inner ring 32. Therefore, the specific connection method can be adjusted according to actual production needs, and this solution will not elaborate on it in detail.

[0032] The disposable medical rubber materials mentioned above are conventional designs in existing technologies. The core characteristics of disposable medical rubber materials such as nitrile rubber, natural latex, and silicone are that they must have excellent biocompatibility, non-toxicity, low allergenicity, and reliable physical properties such as good elasticity, strong sealing, and puncture resistance. At the same time, they must be able to withstand sterilization treatments such as irradiation, ethylene oxide, and contact with chemical disinfectants and solutions to ensure the safety, effectiveness, and single use of medical device gloves, pistons, catheters, etc. Therefore, this solution will not elaborate on them further.

[0033] Example 3, as Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, this embodiment includes an annular threaded groove 11 at the lower middle part of the hollow cylinder 1, and an annular threaded groove 12 at the upper middle part of the hollow cylinder 1.

[0034] Furthermore, the snap-fit ​​assembly 5 includes a disc 51. A limiting groove 2 52 extending through to the left side of the middle of the right side of the outer surface of the disc 51 is provided. A baffle 2 53 is fixedly connected to the left and right sides of the bottom wall of the limiting groove 2 52. A pressing block 54 is slidably connected to the left and right sides of the bottom wall of the limiting groove 2 52. A guide post 3 55 is fixedly connected to the middle of the end of the pressing block 54 on the same side that is close to the baffle 2 53 on the same side. The guide post 3 55 on the same side extends through the baffle 2 53 on the same side. A spring 3 56 is fixedly connected to the ends of the pressing block 54 and the baffle 2 53 on the same side that are close to each other. The spring 3 56 on the same side is located outside the guide post 3 55 on the same side. A threaded ring 57 is fixedly connected to the outer side of the upper end of the disc 51. A circular groove 2 59 is provided in the middle of the upper end of the disc 51. A guide groove 2 58 is provided on the left and right sides of the inner surface of the circular groove 2 59 in an inclined manner.

[0035] Furthermore, the threaded ring 57 is threadedly connected to the annular threaded groove 11 and the annular threaded groove 2 12.

[0036] During use, first remove the snap-fit ​​assembly 5 installed in the inner cavity of the annular threaded groove 11. By rotating the disc 51, the disc 51 drives the threaded ring 57 fixedly connected to it to rotate in the inner cavity of the annular threaded groove 11. Then the threaded ring 57 disengages from the annular threaded groove 11, and the snap-fit ​​assembly 5 can be removed. After the snap-fit ​​assembly 5 is removed as a whole, the sampling assembly 4 removed in the above embodiment can be installed in the inner cavity of the snap-fit ​​assembly 5. By aligning the lower end of the rectangular block 44 with the position of 50, and then pressing the cylinder 41, the two wedge blocks 46 on both sides are squeezed and contracted by the guide groove 58. After the two wedge blocks 46 on both sides enter the inner cavity of the limiting groove 52, the two wedge blocks 46 on both sides are no longer subjected to the squeezing force. At this time, the two wedge blocks 46 on both sides are stuck in the limiting groove 52, thereby completing the operation of installing the sampling component 4 in the inner cavity of the snap-fit ​​component 5. After the sampling component 4 is installed inside the snap-fit ​​component 5, the threaded ring 57 can be oriented towards the annular threaded groove 12 at the upper end of the hollow cylinder 1. Before this, detection fluid can be added to the inner cavity of the hollow cylinder 1. Then, the threaded ring 57 is rotated into the annular threaded groove 12 and tightened, so that the scraper 43 faces downward. See the specific state. Figure 6 ; Then shake the hollow cylinder 1 to fully mix the detection liquid inside the hollow cylinder 1 with the oral mucosa on the surface of the scraper 43. When it is necessary to remove the scraper 43, simply press the squeezing blocks 54 on both sides, so that the squeezing blocks 54 on both sides drive the guide column three 55 fixedly connected to them to pass through the baffle two 53 on the same side and squeeze the wedge block two 46 on the same side, so that the two wedge blocks two 46 retract inward at the same time. Then grasp the cylinder 41 and remove the sampling component 4 as a whole. After releasing the pressure on the squeezing blocks 54 on both sides, the spring three 56 on both sides will no longer be squeezed and will rebound, so that the squeezing blocks 54 on both sides return to their initial state. Subsequently, the magnetic column 42 can be pulled out from the slot at the upper end of the cylinder 41, and the new scraper 43 and the magnetic column 42 can be reinserted into the slot at the upper end of the cylinder 41. The lower end of the magnetic column 42 will magnetically attract the bottom wall of the slot. The magnetic attraction should be strong enough to prevent the scraper 43 from falling off.

[0037] Therefore, this solution, through the cooperation of the snap-fit ​​component 5 and the sampling component 4, can immediately mix the scraped oral mucosa with the test solution, thus preventing the oral mucosa from losing its activity when it is sent for testing.

[0038] The detection solution mentioned above is a conventional design in the existing technology. Its specific detection effect depends entirely on the detection purpose. Therefore, a corresponding detection solution can be added according to the actual detection purpose. Therefore, this solution will not elaborate on it further.

[0039] In this scheme, multiple hollow cylinders 1 can be prepared during use to facilitate subsequent replacement and avoid cross-contamination.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A dental mucosa extraction device, comprising a hollow cylinder (1), characterized in that: The hollow cylinder (1) has a main rod (2) threadedly connected to the upper part of its inner surface. An adjustment component (3) for adjusting any angle is fixedly installed on the upper part of the outer surface of the main rod (2). A sampling component (4) is installed in the middle of the upper end of the main rod (2). A snap-fit ​​component (5) is threadedly installed at the lower end of the hollow cylinder (1).

2. The oral mucosa extraction device for dental use according to claim 1, characterized in that: The main rod (2) has a limiting groove (21) extending to its right side on the upper left side of its outer surface. The main rod (2) has a circular groove (20) in the middle of its upper end. The circular groove (20) has guide grooves (22) set in an inclined manner on the left and right sides of its inner surface. The limiting groove (21) has a baffle (23) fixedly connected to the left and right sides of its bottom wall. The limiting groove (21) has a wedge block (24) slidably connected to the left and right sides of its inner surface. The wedge block (24) on the same side is fixedly connected to the end of the baffle (23) on the same side. The three guide rods (25) on the same side all penetrate the baffle (23) on the same side. The wedge block (24) on the same side and the baffle (23) on the same side are fixedly connected to three springs (26) at their respective ends.

3. The oral mucosa extraction device for dental use according to claim 2, characterized in that: The two wedge blocks (24) are located on opposite sides of the two baffles (23), and the three springs (26) on the same side are located on the outside of the three guide rods (25) on the same side.

4. The oral mucosa extraction device for dental use according to claim 3, characterized in that: The adjustment component (3) includes a hollow sphere (31) fixedly connected to the middle of the outer surface of the main rod (2), an inner ring (32) movably connected to the outer surface of the hollow sphere (31), and a biting pad (33) adhered to the outer surface of the inner ring (32).

5. The oral mucosa extraction device for dental use according to claim 4, characterized in that: The bite pad (33) is made of disposable medical rubber material.

6. The oral mucosa extraction device for dental use according to claim 2, characterized in that: The sampling component (4) includes a cylinder (41) and a magnetic column (42). The upper end of the cylinder (41) has a groove for placing the magnetic column (42). The lower end of the magnetic column (42) is magnetically attracted to the bottom wall of the groove in the upper end of the cylinder (41). A scraper (43) is fixedly connected to the upper end of the magnetic column (42). A rectangular block (44) is fixedly connected to the lower end of the magnetic column (42). A sliding hole is opened in the middle of the left end of the rectangular block (44) and passes through its right end. The left and right sides of the inner surface of the sliding hole are slidably connected to the guide rod (45). The two guide rods (45) are fixedly connected to the ends that are far apart from each other. The rectangular block (44) and the two wedge blocks (46) are fixedly connected to the ends that are close to each other. A spring (47) is fixedly connected to the ends that are close to each other. The spring (47) on the same side is located outside the guide rod (45) on the same side.

7. The oral mucosa extraction device for dental use according to claim 6, characterized in that: The inclined surface at the lower end of the wedge block 2 (46) on the same side cooperates with the inclined surface of the guide groove 1 (22) on the same side.

8. The oral mucosa extraction device for dental use according to claim 1, characterized in that: The hollow cylinder (1) has an annular threaded groove 1 (11) at the middle of its lower end and an annular threaded groove 2 (12) at the middle of its upper end.

9. The oral mucosa extraction device for dental use according to claim 8, characterized in that: The snap-fit ​​assembly (5) includes a disc (51). A limiting groove 2 (52) extending through to the left side of the right side of the outer surface of the disc (51) is provided. A baffle 2 (53) is fixedly connected to both the left and right sides of the bottom wall of the limiting groove 2 (52). An extrusion block (54) is slidably connected to both the left and right sides of the bottom wall of the limiting groove 2 (52). A guide post 3 (55) is fixedly connected to the middle of the end of the extrusion block (54) on the same side near the baffle 2 (53) on the same side. The guide post 3 (55) on the same side extends through... On the same side, the baffle 2 (53), the extrusion block (54) on the same side and the baffle 2 (53) on the same side are all fixedly connected to each other at their respective ends. The spring 3 (56) on the same side is located on the outside of the guide post 3 (55) on the same side. A threaded ring (57) is fixedly connected to the outer side of the upper end of the disc (51). A circular groove 2 (59) is opened in the middle of the upper end of the disc (51). The left side wall and the right side wall of the inner surface of the circular groove 2 (59) are both provided with guide groove 2 (58) arranged in an inclined manner.

10. The oral mucosa extraction device for dental use according to claim 9, characterized in that: The threaded ring (57) is threadedly connected to the annular threaded groove one (11) and the annular threaded groove two (12).

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