Child tooth extraction device for department of stomatology
By designing a clamp handle and limiting body structure for wisdom tooth extraction, the problem that the oral doctor cannot control the small-angle rotation technique when removing the mandibular wisdom tooth is solved, and a safer tooth extraction process is achieved.
Patent Information
- Application Number
- CN202411880103.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-05-02
AI Technical Summary
When the dentist removes his jaw wisdom teeth, it is difficult for him to control the rotation technique at a small angle, resulting in violent torsion, root breakage, alveolar bone damage, periodontal maxillary tear, etc.
A dental wisdom tooth extraction device is designed, including at least two clamp handles and a limiting body. Through the cavity and arcuate grooves and slide structure formed on the inside of the limiting body, the torsion angle of the wisdom tooth is controlled and the rotation method is ensured at a small angle.
It effectively solves the problem that the oral doctor cannot control the small-angle rotation technique when removing the mandibular wisdom teeth, and reduces the risk of root breakage, alveolar bone damage and periodontal maxillary tear.
Smart Images
Figure CN119908858A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of oral medical instruments, and in particular relates to a wisdom tooth extractor for oral medicine. Background Art
[0002] Wisdom teeth, also known as third molars, usually erupt in adults between the ages of 18 and 25. Due to problems such as insufficient space, incorrect position and tooth decay when wisdom teeth grow, some people may experience pain, facial swelling and difficulty chewing food during the growth of wisdom teeth, which may affect their normal life or the health and functional use of other molars, so they need to be extracted. The difficulty of extracting mandibular wisdom teeth is generally higher than that of maxillary wisdom teeth.
[0003] The principle of tooth extraction is that under continuous force, the periodontal membrane will release hyaluronidase to dissolve the periodontal membrane, thereby causing the tooth to fall out of the alveolar bone. Wisdom tooth extraction is generally divided into two situations. One is the cutting extraction method, such as using the T-shaped method to first cut the crown of the tooth, and then partially extract the broken teeth. This method of tooth extraction is suitable for the extraction of impacted wisdom teeth or malpositioned wisdom teeth. However, the cutting extraction method may increase the operation time and bleeding volume, and the postoperative recovery time is longer. Therefore, for wisdom teeth that grow normally and are in the right position, the whole tooth extraction method is more appropriate.
[0004] Dental forceps are a common wisdom tooth extraction tool. They grab the tooth and apply force to pull it out of the alveolar bone. The three forces used by dental forceps include shaking force in the labial and buccal direction, traction with a toothpick after the tooth is loosened, traction along the long axis of the tooth, and torsion force with the long axis of the tooth as the axis. Among them, the direction of shaking force is only perpendicular to part of the periodontal membrane, and the stress concentration points are mainly distributed on the tooth neck and the root tip, which is more likely to cause root breakage; while the direction of torsion force is perpendicular to the direction of all periodontal membrane fibers, which is more conducive to the production of biological effects, resulting in loose periodontal membrane, and more uniform stress on the root, which is not easy to break the root. Therefore, torsion force is a very good way to apply force to loosen teeth; but for flat roots, lower front teeth, multi-root teeth, etc., direct torsion force is generally less used, because excessive torsion may also lead to the risk of root breakage, but teeth and alveolar bones are elastic bodies, and a small-angle rotation method such as the "8" rotation method can be used to avoid root breakage as much as possible.
[0005] The method of tooth extraction using dental forceps using the "8"-shaped rotation method is as follows: 1. Clamp the target tooth, apply a gentle and continuous twisting force in the forward direction from the parallel position of the target tooth to rotate 5 to 10 degrees, maintain for 30 seconds to 1 minute, return to the parallel position, then apply a gentle and continuous twisting force in the reverse direction to rotate 5 to 10 degrees, maintain for 30 seconds to 1 minute, return to the parallel position, and repeat this operation process; 2. When an obvious axial rotation is found in the tooth, use buccal shaking force to squeeze the buccal bone plate, maintain for 10 seconds, and repeat this process until the buccal dislocation occurs.
[0006] However, for inexperienced medical personnel, when using small-angle rotation to extract mandibular wisdom teeth, they are often unable to control the small-angle rotation technique, which can lead to violent twisting and cause root breakage, alveolar bone damage, periodontal membrane tearing, etc. Therefore, a new technology is needed to improve this solution. Summary of the invention
[0007] In view of the above-mentioned problems in the prior art, the present invention provides a dental wisdom tooth extractor, which effectively solves the problem that when dentists use a small-angle rotation method to extract mandibular wisdom teeth, they cannot control the small-angle rotation technique, which leads to violent twisting causing root breakage, alveolar bone damage, periodontal membrane tearing, etc.
[0008] The present invention is implemented by the following technical scheme: a dental wisdom tooth extractor, comprising at least two clamp handles, at least two of the clamp handles include a first clamp handle and a second clamp handle, the clamp handles are arranged horizontally, the clamp handles are connected with the clamp beak, the end of the clamp handle is connected with one end of the clamp beak through a rotating shaft, the clamp beak is arranged horizontally, the horizontally arranged clamp beak extends longitudinally, the width of the longitudinally extended clamp beak tends to be narrowed, the cross-section of the clamp beak is an arc-shaped profile, the end of the longitudinally extended clamp beak is connected with the upper end of the limiter, the lower plane of the limiter is a semicircular ring profile, and the lower plane of the limiter is arranged horizontally;
[0009] The beak of the forceps includes a first beak of the forceps and a second beak of the forceps, and the rotating shaft includes a first rotating shaft and a second rotating shaft, wherein the end of the first handle of the forceps is connected with one end of the first beak of the forceps through the first rotating shaft, and the end of the second handle of the forceps is connected with one end of the second beak of the forceps through the second rotating shaft, the front end surface of the first rotating shaft is tightly fitted with the rear end surface of the second rotating shaft, and the whole formed by the first handle of the forceps, the first rotating shaft, and the first beak of the forceps is cross-arranged with the whole formed by the second handle of the forceps, the second rotating shaft, and the second beak of the forceps;
[0010] An arc-shaped groove is provided on the lower plane of the limiter, a slide is provided on the upper part of the inner cavity of the arc-shaped groove, the slide wall is an elastic slide wall, the slide includes a plurality of concave slides and convex slides, the cross section of the concave slide is upwardly concave, the cross section of the convex slide is downwardly convex, the concave slide includes a middle concave slide and an end concave slide, the convex slide and the end concave slide are symmetrically arranged, and the cross section height of the middle concave slide is lower than the cross section height of the end concave slide;
[0011] A fixing piece is provided on the lower plane of the limiting body, and the fixing piece is a semicircular ring-shaped body. The upper surface of the limiting piece is connected with the lower end of the connecting rod. The lower plane of the limiting body and the lower plane of the fixing piece are arranged horizontally. A spherical protrusion is provided on the upper end of the connecting rod. The upper surface of the fixing piece is connected with the lower plane of the limiting body through the integral body formed by the connecting rod and the spherical protrusion, wherein the spherical protrusion is stuck in the inner cavity of the arc-shaped groove;
[0012] When the first beak of the forceps and the second beak of the forceps are closed, the lower planes of two adjacent limiting bodies are connected to form a circular ring-shaped contour, the inner sides of at least two limiting bodies whose lower planes are connected form a cavity, and the two adjacent fixing members are arranged at intervals on the limiting bodies whose lower planes are connected;
[0013] When the limiting body is in the initial state subjected to vertical force, the rod body of the connecting rod is located in the middle of the arc-shaped groove, the upper surface of the fixing part is tightly fitted with the lower surface of the limiting body, the upper surface of the spherical protrusion is fitted with the middle concave slide surface, and the upper surface of the spherical protrusion forms an interference fit with the middle concave slide surface. When the limiting body is subjected to torsional force, the rod body of the connecting rod is located at the end of the arc-shaped groove and is limited by the side wall of the inner cavity of the arc-shaped groove.
[0014] Furthermore, the upper surface of the longitudinally arranged clamp handle has an arc-shaped contour, and a plurality of anti-slip grooves are arranged on the outer side of the clamp handle.
[0015] Furthermore, the outer surface contour of the fixing member coincides with the outer edge contour of the lower plane of the limiting body, the inner contour radius of the fixing member is R1, the inner contour radius of the lower plane of the limiting body is R2, and R1<R2.
[0016] Furthermore, the angle between the middle of the arc-shaped groove and the end of the arc-shaped groove is X, and the range of X is 5 degrees to 10 degrees. The angle formed by the end of the fixing member and the end of the limiting body is Y, and X<Y.
[0017] Furthermore, the width of the arc-shaped groove is a, the diameter width of the connecting rod is b, and the diameter width of the spherical protrusion is c, wherein b<a<c.
[0018] Furthermore, the first rotating shaft and the second rotating shaft are connected via a bearing structure.
[0019] Furthermore, the pliers handle, the rotating shaft, the pliers beak, and the outer side of the limiting body are made of metal material, the metal material is stainless steel material, and the inner side of the limiting body is made of elastic material, and the elastic material is silicone material.
[0020] Furthermore, a plurality of slots are provided inside the limiter, and the slots are tooth-shaped protrusions.
[0021] Beneficial Effects
[0022] The present invention forms a cavity inside at least two limiting bodies, which can effectively limit the side surface of the wisdom tooth body. When subjected to a torsional force on the basis of a vertical force, the fixing part is fixed at the wisdom tooth socket due to the influence of the vertical force. The whole formed by the fixing part, the connecting rod and the spherical protrusion is kept in a static state by the vertical force. When subjected to a torsional force at the same time, the whole formed by the limiting body and the characteristic structure on the upper part of the limiting body is twisted, and the arc-shaped groove and the slideway of the inner cavity of the arc-shaped groove rotate relative to the whole formed by the connecting rod, the spherical protrusion and the fixing part. The upper surface of the spherical protrusion and the slideway generate relative sliding friction between the upper surface of the spherical protrusion and the slideway, so that the spherical protrusion slides from the concave slideway in the middle to the concave slideway at the end, and is limited by the side wall of the inner cavity of the arc-shaped groove. The torsional angle is controlled by being limited by the side wall of the inner cavity of the arc-shaped groove, so that the limited wisdom tooth body is twisted at the same angle, which effectively solves the problem that when dentists use a small-angle rotation method to extract mandibular wisdom teeth, they cannot control the small-angle rotation technique, which leads to violent torsion causing root breakage, alveolar bone damage, periodontal membrane tearing and the like. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 A three-dimensional diagram of an embodiment of the present invention;
[0024] Figure 2 This is a bottom view of the beak of the forceps, the limiting body, and the arc-shaped groove in the closed state of an embodiment of the present invention;
[0025] Figure 3 This is a detailed diagram of a closed state of an embodiment of the present invention;
[0026] Figure 4 A partial top view of an embodiment of the present invention;
[0027] Figure 5 This is a front view of the beak of the forceps, the limiting body, the connecting rod, and the fixing member according to an embodiment of the present invention;
[0028] Figure 6 This is a cross-sectional view of the arc groove, connecting rod and fixing member structure under vertical force in one embodiment of the present invention.
[0029] In the figure: the first clamp handle -1; the second clamp handle -2; -1; the first clamp beak -3; the second clamp beak -4; the first rotating axis 1b; the second rotating axis -2a; the limiting body -5; the arc groove -6; the anti-slip groove -7; the fixing piece -10; the connecting rod -11; the spherical protrusion -12; the middle concave slide -13; the end concave slide -14; the convex slide -15; the slot -16. DETAILED DESCRIPTION
[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0031] like Figure 1-6 As shown, a dental wisdom tooth extractor comprises two pliers handles, wherein the two pliers handles include a first pliers handle 1 and a second pliers handle 2, the pliers handles are arranged horizontally, the pliers handles are connected to the pliers beak, and the end of the pliers handles is connected to one end of the pliers beak through a rotating shaft, the pliers beak is arranged horizontally, the horizontally arranged pliers beak extends longitudinally, the diameter width of the longitudinally extended pliers beak tends to be narrowed, the cross-section of the pliers beak is an arc-shaped contour, the end of the longitudinally extended pliers beak is connected to the upper end of a limiting body 5, the lower plane of the limiting body 5 is a semicircular ring contour, and the lower plane of the limiting body 5 is arranged horizontally.
[0032] In this embodiment, the beak of the forceps includes a first beak of the forceps 3 and a second beak of the forceps 4, and the rotating shaft includes a first rotating shaft 1b and a second rotating shaft 2a, wherein the end of the first handle 1 is connected to one end of the first beak of the forceps 3 through the first rotating shaft 1b, and the end of the second handle 2 is connected to one end of the second beak of the forceps 4 through the second rotating shaft 2a, the front end surface of the first rotating shaft 1b is tightly fitted with the rear end surface of the second rotating shaft 2a, and the whole formed by the first handle 1, the first rotating shaft 1b, and the first beak of the forceps 3 is cross-arranged with the whole formed by the second handle 2, the second rotating shaft 2a, and the second beak of the forceps 4.
[0033] In this embodiment, an arc-shaped groove 6 is provided on the lower plane of the limiting body 5, and a slide is provided on the upper part of the inner cavity of the arc-shaped groove 6. The slide wall is an elastic slide wall. The slide includes three concave slides and two convex slides 15. The cross-section of the concave slide is concave upward, and the cross-section of the convex slide 15 is convex downward. The concave slide includes a middle concave slide 13 and an end concave slide 14. The convex slide 15 and the end concave slide 14 are symmetrically arranged, and the cross-sectional height of the middle concave slide 13 is lower than the cross-sectional height of the end concave slide 14.
[0034] In this embodiment, a fixing member 10 is provided on the lower plane of the limiting body 5, and the fixing member 10 is a semicircular ring-shaped body. The upper surface of the limiting member is connected with the lower end of the connecting rod 11. The lower plane of the limiting body 5 and the lower plane of the fixing member 10 are arranged horizontally. The upper end of the connecting rod 11 is provided with a spherical protrusion 12. The upper surface of the fixing member 10 is connected with the lower plane of the limiting body 5 through the integral body formed by the connecting rod 11 and the spherical protrusion 12, wherein the spherical protrusion 12 is inserted into the inner cavity of the arc-shaped groove 6. When the spherical protrusion 12 slides in the slide, since the slide wall is an elastic slide wall, when the device as a whole is subjected to a torsional force, the whole formed by the limiting body 5 and the characteristic structure on the upper part of the limiting body 5 is twisted relative to the whole formed by the connecting rod 11, the spherical protrusion 12, and the fixing part 10. When the spherical protrusion 12 slides in the slide, the convex slide 15 is deformed, so the spherical protrusion 12 slides back and forth in the concave slide 13 in the middle and the concave slide 14 at the end.
[0035] In this embodiment, when the first beak 3 and the second beak 4 are closed, the lower planes of the two limiting bodies 5 are connected to form a circular contour, and a cavity is formed inside the two limiting bodies 5 connected by the lower planes. The contact area between the inner side of the limiting body 5 and the side surface of the wisdom tooth is larger than the contact area of the conventional tooth extraction forceps. When the adjacent fixing members 10 clamp the side surface of the wisdom tooth, the formed cavity can limit the tooth body of the wisdom tooth. The two adjacent fixing members 10 are arranged at intervals on the limiting bodies 5 connected by the lower planes.
[0036] In this embodiment, when the limiting body 5 is in the initial state subjected to the vertical force, the rod body of the connecting rod 11 is located in the middle of the arc-shaped groove 6, and the fixing member 10 is also subjected to the vertical force, so that the fixing member 10 can be fixed in the wisdom tooth socket, and the upper surface of the fixing member 10 is tightly fitted with the lower surface of the limiting body 5, and the upper surface of the spherical protrusion 12 is fitted with the surface of the middle concave slide 13. The upper surface of the spherical protrusion 12 and the surface of the middle concave slide 13 form an interference fit, and the cross-sectional height of the middle concave slide 13 is lower than the cross-sectional height of the end concave slide 14. At the same time, due to the limiting effect of the convex slide 15, the dentist can determine that the device as a whole is in a parallel position relative to the wisdom tooth.
[0037] In this embodiment, when the device is subjected to a torsional force on the basis of a vertical force, since the whole formed by the fixing member 10, the connecting rod 11, and the spherical protrusion 12 remains stationary under the vertical force, the lower surface of the limiting body 5 slides relative to the fixing member 10, and the arcuate groove 6 and the slideway in the inner cavity of the arcuate groove 6 rotate relative to the whole formed by the connecting rod 11, the spherical protrusion 12, and the fixing member 10. The upper surface of the spherical protrusion 12 and the slideway generate relative sliding friction, and the convex slideway 15 of the elastic structure is deformed by squeezing the outer surface of the spherical protrusion 12, so that the spherical protrusion 12 slides from the middle concave slideway 13 to the end concave slideway 14, and the rod body of the connecting rod 11 is located at the end of the arcuate groove 6 and is limited by the side wall of the inner cavity of the arcuate groove 6.
[0038] The device limits the side surface of the wisdom tooth body through the cavity formed on the inner side of two adjacent limiting bodies 5. When subjected to a torsional force on the basis of a vertical force, the fixing member 10 is fixed at the wisdom tooth socket due to the influence of the vertical force, and the whole formed by the fixing member 10, the connecting rod 11, and the spherical protrusion 12 is kept stationary by the vertical force. When subjected to a torsional force at the same time, the limiting body 5 and the whole formed by the characteristic structure on the upper part of the limiting body 5 are twisted, and the lower surface of the limiting body 5 slides relative to the fixing member 10, and the arc-shaped groove 6 and the slideway in the inner cavity of the arc-shaped groove 6 rotate relative to the whole formed by the connecting rod 11, the spherical protrusion 12, and the fixing member 10. The upper surface of the spherical protrusion 12 A relative sliding friction force is generated with the slideway, and the convex slideway 15 of the elastic structure is deformed by squeezing the outer surface of the spherical protrusion 12, so that the spherical protrusion 12 slides from the middle concave slideway 13 to the end concave slideway 14, and the rod body of the connecting rod 11 is located at the end of the arc-shaped groove 6, and is limited by the inner cavity side wall of the arc-shaped groove 6, and the torsion angle is controlled by being limited by the inner cavity side wall of the arc-shaped groove 6, so that the wisdom tooth tooth bodies limited on the inner sides of the two adjacent limiting bodies 5 are twisted at the same angle, which effectively solves the problem that when the dentist uses a small-angle rotation method to extract the mandibular wisdom tooth, the dentist cannot control the small-angle rotation technique, thereby causing violent torsion to cause root breakage, alveolar bone damage, periodontal membrane tearing, etc.
[0039] In this embodiment, the upper surface of the longitudinally arranged clamp handle has an arc-shaped contour, and four anti-slip grooves 7 are provided on the outer side of the clamp handle to increase the friction of the operator's hand. The outer surface contour of the fixing member 10 coincides with the outer edge contour of the lower plane of the limiting body 5. The inner contour radius of the fixing member 10 is R1, and the inner contour radius of the lower plane of the limiting body 5 is R2. R1<R2. When the inner sides of two adjacent limiting bodies 5 limit the wisdom tooth tooth body, the inner side of the fixing member 10 does not contact the wisdom tooth and does not generate friction. Therefore, when the device is subjected to a torsional force on the basis of the vertical force, the fixing member 10 remains stationary, while the limiting body 5 and the characteristic structure of the upper part of the limiting body 5 form a whole that twists.
[0040] In this embodiment, the angle between the middle of the arc groove 6 and the end of the arc groove 6 is X, and the range of X is 5 degrees to 10 degrees, which allows the device to rotate 5 degrees to 10 degrees clockwise and counterclockwise relative to the parallel position. The angle formed by the end of the fixing member 10 and the end of the limiting body 5 is Y, X<Y. When the limiting body 5 is twisted relative to the fixing member 10, there is enough torsion space to achieve precise small-angle twisting.
[0041] In this embodiment, the width of the arc groove 6 is a, the diameter of the connecting rod 11 is b, and the diameter of the spherical protrusion 12 is c, wherein b<a<c, and the first rotating shaft 1b and the second rotating shaft 2a are connected through a bearing structure and rotate experimentally.
[0042] In this embodiment, the pliers handle, the rotating shaft, the pliers beak, and the outer side of the limiting body 5 are made of metal material, the metal material is stainless steel material, the inner side of the limiting body 5 is made of elastic material, the elastic material is silicone material, and a plurality of slots 16 are provided on the inner side of the limiting body 5, and the slots 16 are tooth-shaped protrusions.
[0043] The working process of this device is as follows:
[0044] S1: The operator holds two adjacent clamp handles and controls the opening and closing state of the clamp handles, so that the inner cavity limiting columns of the two adjacent limiting bodies 5 limit the target wisdom tooth body. The device as a whole is in a parallel position relative to the wisdom tooth, and a vertical force is applied in the direction of the alveolar socket, so that the lower surface of the limiting block fits with the upper surface of the fixing part 10, and the upper surface of the spherical protrusion 12 forms an interference fit with the surface of the middle concave slide 13, and the fixing part 10 is fixed on the surface of the target wisdom tooth alveolar socket.
[0045] S2: A positive, soft and continuous twisting force is applied to the device from the parallel position of the target wisdom tooth, and the spherical protrusion 12 moves from the middle concave slide 13 to the end concave slide 14. The spherical protrusion 12 is limited by the inner cavity side wall of the arc-shaped groove 6 to control the twisting angle to be a positive twist of 5 to 10 degrees, thereby causing the wisdom teeth limited inside the two adjacent limiting bodies 5 to be positively twisted by 5 to 10 degrees;
[0046] Apply a reverse soft and continuous twisting force, the spherical protrusion 12 moves from the end concave slideway 14 to the middle concave slideway 13, and the upper surface of the spherical protrusion 12 forms an interference fit with the surface of the middle concave slideway 13, driving the target wisdom tooth back to the parallel position;
[0047] Continue to apply reverse soft and continuous twisting force, the spherical protrusion 12 moves from the middle concave slideway 13 to the other end concave slideway 14, and the spherical protrusion 12 is limited by the inner cavity side wall of the arc-shaped groove 6 to control the twisting angle to reverse twist 5 degrees to 10 degrees, thereby causing the wisdom tooth body limited inside the two adjacent limiting bodies 5 to reverse twist 5 degrees to 10 degrees;
[0048] By applying a positive, gentle and continuous torsional force, the spherical protrusion 12 moves from the concave slideway 14 at the other end to the middle concave slideway 13, and the upper surface of the spherical protrusion 12 forms an interference fit with the surface of the middle concave slideway 13, driving the target wisdom tooth back to a parallel position.
[0049] S3: Repeat step S2 until the target wisdom tooth is in an active state, and then extract the target wisdom tooth by squeezing the alveolar cavity or using traction force.
[0050] It should be noted that the terms used in this embodiment are only used to facilitate the description of this embodiment, and are not used to limit this embodiment. Unless otherwise specified, the parts, implementation steps, and sizes shown in these embodiments do not limit the scope of this embodiment. In this embodiment, it should be known that the sizes of the various parts described in the drawings are different from the actual sizes and proportions.
[0051] The above is only one of the preferred embodiments of the present invention and is not a formal limitation of the present invention. It should be understood that the technologies, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the technologies, methods and devices should be regarded as part of the authorization specification and should be included in the protection scope of the present invention within the scope of the features defined in the claims.
Claims
1. A wisdom tooth extractor for oral department, characterized by: The invention comprises at least two clamp handles, wherein at least two of the clamp handles include a first clamp handle and a second clamp handle, wherein the clamp handles are arranged horizontally, and the clamp handles are connected with the clamp beak, and the end of the clamp handles is connected with one end of the clamp beak through a rotating shaft, and the clamp beak is arranged horizontally, and the horizontally arranged clamp beak extends longitudinally, and the width of the longitudinally extended clamp beak tends to be narrowed, and the cross section of the clamp beak has an arc-shaped profile, and the end of the longitudinally extended clamp beak is connected with the upper end of the limiting body, and the lower plane of the limiting body is a semicircular ring profile, and the lower plane of the limiting body is arranged horizontally; The beak of the forceps includes a first beak of the forceps and a second beak of the forceps, and the rotating shaft includes a first rotating shaft and a second rotating shaft, wherein the end of the first handle of the forceps is connected with one end of the first beak of the forceps through the first rotating shaft, and the end of the second handle of the forceps is connected with one end of the second beak of the forceps through the second rotating shaft, the front end surface of the first rotating shaft is tightly fitted with the rear end surface of the second rotating shaft, and the whole formed by the first handle of the forceps, the first rotating shaft, and the first beak of the forceps is cross-arranged with the whole formed by the second handle of the forceps, the second rotating shaft, and the second beak of the forceps; An arc-shaped groove is provided on the lower plane of the limiter, a slide is provided on the upper part of the inner cavity of the arc-shaped groove, the slide wall is an elastic slide wall, the slide includes a plurality of concave slides and convex slides, the cross section of the concave slide is upwardly concave, the cross section of the convex slide is downwardly convex, the concave slide includes a middle concave slide and an end concave slide, the convex slide and the end concave slide are symmetrically arranged, and the cross section height of the middle concave slide is lower than the cross section height of the end concave slide; A fixing piece is provided on the lower plane of the limiting body, and the fixing piece is a semicircular ring-shaped body. The upper surface of the limiting piece is connected with the lower end of the connecting rod. The lower plane of the limiting body and the lower plane of the fixing piece are arranged horizontally. A spherical protrusion is provided on the upper end of the connecting rod. The upper surface of the fixing piece is connected with the lower plane of the limiting body through the integral body formed by the connecting rod and the spherical protrusion, wherein the spherical protrusion is stuck in the inner cavity of the arc-shaped groove; When the first beak of the forceps and the second beak of the forceps are closed, the lower planes of two adjacent limiting bodies are connected to form a circular ring-shaped contour, the inner sides of at least two limiting bodies whose lower planes are connected form a cavity, and the two adjacent fixing members are arranged at intervals on the limiting bodies whose lower planes are connected; When the limiting body is in the initial state subjected to vertical force, the rod body of the connecting rod is located in the middle of the arc-shaped groove, the upper surface of the fixing part is tightly fitted with the lower surface of the limiting body, the upper surface of the spherical protrusion is fitted with the middle concave slide surface, and the upper surface of the spherical protrusion forms an interference fit with the middle concave slide surface. When the limiting body is subjected to torsional force, the rod body of the connecting rod is located at the end of the arc-shaped groove and is limited by the side wall of the inner cavity of the arc-shaped groove.
2. The dental wisdom tooth extractor according to claim 1, characterized in that: The upper surface of the longitudinally arranged clamp handle has an arc-shaped contour, and a plurality of anti-slip grooves are arranged on the outer side of the clamp handle.
3. The dental wisdom tooth extractor according to claim 1, characterized in that: The outer surface contour of the fixing member coincides with the outer edge contour of the lower plane of the limiting body, the inner contour radius of the fixing member is R1, the inner contour radius of the lower plane of the limiting body is R2, and R1<R2.
4. The dental wisdom tooth extractor according to claim 1, characterized in that: The included angle between the middle of the arc-shaped groove notch and the end of the arc-shaped groove notch is X, and the range of X is 5 degrees to 10 degrees. The included angle formed by the end of the fixing member and the end of the limiting body is Y, and X<Y.
5. The dental wisdom tooth extractor according to claim 1, characterized in that: The width of the arc-shaped groove is a, the diameter width of the connecting rod is b, and the diameter width of the spherical protrusion is c, wherein b<a<c.
6. The dental wisdom tooth extractor according to claim 1, characterized in that: The first rotating shaft 1b is connected to the second rotating shaft via a bearing structure.
7. The dental wisdom tooth extractor according to claim 1, characterized in that: The clamp handle, the rotating shaft, the clamp beak, and the outer side of the limiting body are made of metal material, and the metal material is stainless steel material. The inner side of the limiting body is made of elastic material, and the elastic material is silicone material.
8. The dental wisdom tooth extractor according to claim 1, characterized in that: A plurality of slots are arranged inside the limiter, and the slots are tooth-shaped protrusions.