Dental-alveolar bone separator
This tooth-alveolar bone separator, operated by two hands, uses a double-edged blade and a push-button mechanism. It solves the problems of time-consuming, laborious, and unstable operation of existing tooth extraction tools, achieving efficient and safe separation of tooth roots from alveolar bone, reducing tissue damage and bleeding, and is suitable for various tooth extraction situations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 毛渝
- Filing Date
- 2025-05-23
- Publication Date
- 2026-07-21
AI Technical Summary
Existing tooth extraction tools are time-consuming and laborious to operate when cutting periodontal ligaments, have poor stability, are prone to causing tissue damage, and have problems such as noise pollution and high price, making it difficult to achieve efficient and safe separation of tooth roots from alveolar bone.
Design a two-handed tooth-alveolar bone separator that uses a double-edged blade and a push-button structure. Through coordinated operation of both hands, it can quickly cut the periodontal ligament, reduce tissue trauma, and is equipped with multiple blades to adapt to ligament cutting on different sides.
It improves tooth extraction efficiency, reduces bleeding and tissue damage, lowers surgical complexity, creates favorable conditions for subsequent implant surgery, is cost-effective, and is suitable for various tooth extraction situations.
Smart Images
Figure CN224523284U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates generally to the field of dentistry, and specifically to an instrument for separating tooth roots from alveolar bone during tooth extraction surgery. Background Technology
[0002] Traditional tooth extraction techniques typically involve dental elevators and forceps. In complex cases, surgical drills are sometimes used to split the tooth or remove alveolar bone surrounding it. These surgical instruments often cause trauma to the extraction site, including alveolar bone damage, root fracture, and bleeding of the jawbone and gum tissue. Such damage complicates subsequent reconstruction and restoration work.
[0003] To reduce tissue damage and facilitate implant placement after tooth extraction, a manual tool called a "perriotome" was introduced. This tool is designed to sever the periodontal ligament connecting the tooth to the surrounding alveolar bone, thereby reducing damage to the gingival and bone tissues and creating better conditions for implant placement. However, despite these advantages, the periodontal ligament still has some significant drawbacks during tooth extraction. First, the space between the root surface and the surrounding alveolar bone is very narrow (approximately 0.15mm–0.2mm), and the density and toughness of the periodontal ligament make it difficult for the blade to enter the periodontal space of the alveolar ridge to sever the ligament, making the operation time-consuming and laborious. Second, the periodontal ligament is primarily designed for single-handed operation, resulting in poor stability in clinical use; the blade easily slips off the alveolar ridge, causing tissue damage in the early stages of surgery. Third, the periodontal ligament lacks an effective vertical force application mechanism and guidance in clinical practice, making it difficult to smoothly advance the blade towards the root apex, making the operation time-consuming and physically demanding on the operator.
[0004] Another type of extraction aid is the ultrasonic device, which includes a handle, a specially shaped and angled insertion tip, and a saline cooling system. This device uses the high-frequency vibration of the ultrasonic probe to make vertical cuts and horizontal scrapings around the tooth, aiming to detach the tooth from the alveolar bone and thus facilitate extraction without damaging bone tissue. However, this device also has several drawbacks. For example, the cutting speed depends on the ultrasonic power and vibration frequency; higher power and frequency in clinical use can generate noise and propagate energy waves to the bone tissue, causing patient discomfort and anxiety. Furthermore, saline cooling reduces visibility of the extraction site and requires continuous suction, increasing the complexity of the procedure. Moreover, to accommodate periodontal gaps of 0.15–0.2 mm, the insertion tip must be very small, making it prone to breakage under high-frequency vibration; using a larger tip can damage alveolar bone tissue, creating an unstable bony coating on the alveolar bone surface that is detrimental to implant placement. Ultimately, this device is expensive, has low cost-effectiveness, and poor market acceptance.
[0005] Golden Dental Solutions offers a tooth extraction separation tool that is a straight instrument operated by one hand. It features a sharp working tip followed by a short, thick body, designed to protect the buccal alveolar plate to facilitate implant placement. However, this tool also has several drawbacks, such as being only suitable for the mesial and distal spaces of teeth, making it difficult to use for cutting the periodontal ligament on the labial, buccal, palatal, and lingual sides; it is unsuitable for posterior teeth; and its one-handed design results in slow operation and can easily cause hand fatigue for the operator.
[0006] Another dental extraction tool is called the "Type 6 splitting extraction forceps," which is designed to improve tactile feedback and reduce hand fatigue during extraction. However, this tool is not used to cut the periodontal ligament but to split the tooth apart, and it is not suitable for all extraction situations.
[0007] Therefore, there is still a need for a cost-effective and simple manual tooth extraction tool that can conveniently, efficiently, and safely cut the periodontal ligament and separate the tooth root from the alveolar bone. Utility Model Content
[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0009] This invention provides a two-handed root-alveolar bone separator that can quickly and effectively cut the periodontal ligament and separate the tooth root from the alveolar bone during tooth extraction, reducing tissue trauma, bleeding, and postoperative complications, and creating favorable conditions for subsequent implant surgery.
[0010] At its most basic level, a tooth-alveolar bone separator includes:
[0011] A blade with two cutting edges and a tip at one end;
[0012] A push button is connected to the other end of the blade; the push button and the blade together form a cutting and separating working head; the operator's thumb or index finger, which controls the steady hand, applies pressure to the periodontal ligament through the button to sever the connection between the tooth root and the alveolar bone;
[0013] A connecting handle is attached to the push button and / or the blade;
[0014] A handle, one end of which is connected to the connecting handle, is designed to be held by a user with one hand to guide the blade into the periodontal space of the extracted tooth, and the pressing button is designed to be applied by a portion of the user's other hand to cut the periodontal ligament during the separation of the patient's tooth root from the alveolar bone.
[0015] Optionally, the pressing button is approximately conical in shape, with a flat top for applying pressure.
[0016] Optionally, the blade is approximately short sword-shaped.
[0017] Optionally, the tooth-alveolar bone separator further comprises:
[0018] The other blade has two cutting edges and a tip at one end;
[0019] Another push button is connected to the other end of the blade;
[0020] Another connecting handle is attached to the other end of the handle and connected to the other blade and / or button mentioned above.
[0021] The other press button is also designed to be applied by the user's second hand to sever another periodontal ligament to complete the separation of the tooth root from the alveolar bone. This second blade points in a different direction than the original blade; the angle of this second blade relative to the handle is also different from that of the original blade. Optionally, this second blade is the same size as the original blade. The original blade is used to sever the periodontal ligaments on the mesial and distal sides of the tooth, while this second blade is used to sever the periodontal ligaments on the labial and lingual sides.
[0022] The connecting handle and the handle are an integral structure, or the connecting handle can be detached from the handle.
[0023] One alternative for achieving disassembly is that the handle includes a slot, and the connecting handle includes an extension that can be inserted into the slot; the shape of the slot matches the extension to prevent it from rotating within the slot. Optionally, the extension is detachably secured to the slot by magnetism.
[0024] Another alternative for achieving disassembly is that the tooth-alveolar bone separator further includes:
[0025] The distal end of the handle has a planar surface;
[0026] The surface is provided with two parallel extending protrusions;
[0027] The extension of the connecting handle can be inserted between the protrusions, and both the extension and the protrusions are provided with grooves;
[0028] The conical lock cover has an opening and a protrusion on its inner surface that can be inserted into a groove to achieve locking.
[0029] The pressure is applied vertically to the button, and the second hand is used to press the button with its thumb or index finger.
[0030] This utility model has the following advantages:
[0031] 1) Easy insertion into the periodontal space: The tip of the blade is sharp and thin, with a thickness smaller than the gap between the alveolar bone and the tooth root, which makes it easy to locate and safely insert into the periodontal space at the gingival margin, as well as insert along the root surface to the root apex.
[0032] 2) High-efficiency cutting and wedging: The blade is symmetrical with two edges, resembling a short sword. The needle-like tip can penetrate deep into the root surface. As it moves towards the root tip, the two edges swing in an arc to quickly cut the ligament. The conical blade body, through wedging, achieves efficient separation of the tooth root from the alveolar bone.
[0033] 3) Convenient vertical force application: Applying vertical pressure via a button guides the blade easily into the periodontal space and quickly embeds it towards the root apex, improving accuracy and operational efficiency.
[0034] 4) High operability: The handle design facilitates continuous arc cutting and assists in vertical force application, improving control.
[0035] 5) Two-handed operation: One hand stabilizes the patient's mandible, with the thumb or index finger pressing the button for vertical wedge insertion, while the other hand controls the handle for arc-shaped cutting, greatly improving extraction efficiency and reducing bleeding and tissue damage.
[0036] 6) In addition to routine tooth extraction, this instrument is also particularly suitable for the precise extraction of broken teeth and roots, avoiding damage to the alveolar bone and creating conditions for dental implantation.
[0037] Other embodiments of this utility model will be further clarified through the detailed description that follows. These embodiments are merely preferred embodiments, and their details and form may be adjusted and varied without departing from the spirit and scope of the invention. Therefore, the drawings and description should be understood as illustrative rather than restrictive. Attached Figure Description
[0038] Figure 1 This is a schematic diagram of a tooth-alveolar bone separator according to one embodiment.
[0039] Figure 2 for Figure 1 The front view of the separator's blade, button, and connecting handle.
[0040] Figure 3 for Figure 1 Rear view of the blade, button, and connecting handle of the separator shown.
[0041] Figure 4 This is a schematic diagram of a tooth-alveolar bone separator according to another embodiment.
[0042] Figure 5 for Figure 4 The front view of the separator's blade, button, and connecting handle.
[0043] Figure 6 for Figure 4 Rear view of the blade, button, and connecting handle of the separator shown.
[0044] Figure 7 In a further embodiment of the tooth-alveolar bone separator, the connecting handle is detachable from the handle.
[0045] Figure 8 for Figure 7 The diagram shows a separator with a rubber ring on its connecting handle.
[0046] Figure 9 To and Figure 7 A schematic diagram of the slot where the connecting handle contacts.
[0047] Figure 10 for Figure 7 In the tooth-alveolar bone separator of the embodiment, the connecting handle has been inserted into the handle.
[0048] Figure 11 for Figure 10 In the structure shown, the connecting handle and Figure 4-6 The diagram shows the state of the blades in engagement.
[0049] Figure 12 This is a schematic diagram of a tooth-alveolar bone separator with a double-blade structure according to one embodiment.
[0050] Figure 13 for Figure 12 Front view of the blade, button, and connecting handle on the right side.
[0051] Figure 14 for Figure 12 Front view of the blade, button, and connecting handle on the left side.
[0052] Figure 15 This diagram illustrates the use of a tooth-alveolar bone separator blade to cut the periodontal ligament between the tooth root and the alveolar bone.
[0053] Figure 16A –16C is a structural diagram of a tooth-alveolar bone separator with a conical locking cap. Figure 16D For details of the lock cover structure, Figure 16E This is a schematic diagram of the lock cover cross-section.
[0054] Figure 17A –17B is a schematic diagram of a tooth-alveolar bone separator using clamps to fix the connecting handle.
[0055] Reference numerals: 10. Tooth-alveolar bone separator; 11. Handle; 11a. Proximal end; 11b. Middle part; 11c. Distal end; 12. Connecting handle; 13. Blade; 14. Cutting edge; 15. Tip; 16. Button; 17. Flat surface; 18. Extension; 19. Egg-shaped structure; 20. Slot; 21. Rubber ring; 22. Distal protrusion of the handle; 23. Conical locking cap; 24. Groove; 25. Protrusion; 26. Clamping forceps; 27. Periodontal space; 28. Back of blade. Detailed Implementation
[0056] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0057] The tooth-alveolar bone separator can be controlled by both hands, which can both increase the applied force and improve the accuracy of separating the tooth root from the alveolar bone.
[0058] Figure 1 A tooth-alveolar bone separator 10 according to one embodiment is shown. An operator (such as a dentist) holds a handle 11 with one hand to position the separator at the extraction site. The handle 11 may include a proximal portion 11a, a middle portion 11b, and a distal portion 11c. The diameter of the middle portion 11b of the handle 11 is thinner than that of the two ends (11a, 11c) of the handle 11, and further, it gradually tapers from the ends of the handle 11 towards the middle portion, which facilitates the operator in placing their hand securely on the middle portion 11b.
[0059] The handle 11 is connected to the connecting handle 12, which in turn connects the blade 13 and the button 16. The blade and the button together constitute the working head. The connecting handle 12 can be an integral part of the handle 11 or a separate component. The blade 13 can be short sword-shaped, with sharp cutting edges 14 on both sides and a needle-like tip 15. All components can be made of materials such as surgical-grade stainless steel. The button 16 is located above the blade 13, with a flat surface 17 at the other end. The operator can apply pressure with the fingers of their other hand to guide the blade into the periodontal space to cut the periodontal ligament.
[0060] The connecting handle 12 can be integrally molded or tightly assembled to connect the blade and the button. In some embodiments, the connecting handle 12 is detachable to allow for the replacement of different types of blades. Figure 2 and Figure 3 The front and rear views of the blade 13, button 16, and connecting handle 12 are shown respectively (excluding the handle 11).
[0061] In one embodiment, the blade 13 has a length of 12mm to 15mm, a thickness of 1mm to 1.5mm at its widest point, an overall length of 18mm for the blade and button, and a top surface diameter of 8mm for the button. Other dimensions can also be adjusted according to clinical needs.
[0062] The tooth-alveolar bone separator 10 can be equipped with blades of different widths to accommodate ligament cutting on different sides of the tooth. For example... Figure 4 As shown, the blade direction is... Figure 1 The blade back 28 and the blade edge 14 are different in orientation relative to the handle 11, and their blade face width is greater than... Figure 1It is used to cut the labial and lingual ligaments. Figure 5 and Figure 6 Display respectively Figure 4 Front and rear views of the blade assembly.
[0063] In some embodiments, the connecting handle 12 can be detached from the handle 11 and replaced with other connecting handles with different blades. Figure 7 The disassembly structure is shown. The connecting handle 12 has an extension 18, and the handle 11 has a slot 20 for inserting the extension. The extension 18 contains an egg-shaped structure 19 that fits snugly into the slot 20. To improve stability, a rubber ring 21 can be provided on the extension. Figure 8 (as shown), and compressed into the slot to enhance stability. Figure 9 The diagram illustrates the slot structure. Alternatively, the extension 18 can be detachably fixed to the slot 20 via magnetism.
[0064] A further method of securing the device is to use a conical locking cap 23 ( Figure 16A –16E). The connecting handle 12 has an extension 18, and the handle 11 has two parallel extending protrusions, namely the handle distal protrusion 22. The extension 18 of the connecting handle can be inserted between the two handle distal protrusions 22. Both the extension 18 and the handle distal protrusion 22 have grooves 24.
[0065] The conical lock cover has an opening and a protrusion 25 on its inner surface. After the extension 18 of the connecting handle is inserted between the two distal protrusions 22 of the handle, the lock cover is rotated, and the protrusion 25 inside the lock cover is inserted into the groove 24 on the connecting handle and the handle to achieve locking.
[0066] Another method of securing it is to use clamps 26 ( Figure 17A –17B), after being inserted into the extension 18, it is clamped by the clamps to achieve detachable fixation.
[0067] exist Figure 10 and Figure 11 The image shows different blade mounting directions. Figure 12 This demonstrates a separator with a dual-blade structure, which can be either integrated or detached. Figure 13 and Figure 14 A front view of the dual-blade assembly is shown, its structure designed for cutting the mesial / distal and labial / lingual periodontal ligaments respectively.
[0068] Figure 15 This further illustrates how to achieve complete separation of the tooth root from the alveolar bone using blades at different angles. Figures 13a and 13b show two blades with different installation directions. The two blades, working together with an arc-shaped cutting motion and vertical force, guide the blades into the periodontal space 27 to sever the periodontal ligament, significantly improving extraction efficiency and reducing trauma.
[0069] Although several embodiments of the present invention have been described in detail, those skilled in the art should understand that modifications and changes can be made to its form and details without departing from the spirit and scope of the claims.
Claims
1. A tooth-alveolar bone separator, characterized in that, The utility model relates to a dental root separating device, comprising: a blade with two cutting edges and a pointed end at one end; a pressing button connected to the other end of the blade; a connecting handle connected to the pressing button and / or the blade; a handle connected to the connecting handle at one end, the handle being designed to be held by one hand of a user to guide the blade into the periodontal space of the tooth to be extracted, and the pressing button being designed to be pressed by a part of the other hand of the user to cut the periodontal ligament during the separation of the dental root from the alveolar bone.
2. The tooth-crestal bone separator according to claim 1, characterized in that The pressing button is conical with a flat top end for pressing.
3. The tooth-crestal bone separator according to claim 1, wherein, The blade is short sword-shaped.
4. The tooth-crestal bone separator according to claim 1, wherein, Further comprising: another blade with two cutting edges and a pointed end at one end; another pressing button connected to the other end of the blade; another connecting handle connected to the other end of the handle and connected to the other blade and / or the button, the other pressing button also being designed to be pressed by the second hand of the user to cut the other periodontal ligament to complete the separation of the dental root from the alveolar bone.
5. The tooth-crestal bone separator according to claim 4, characterized in that The other blade points in a different direction from the original blade; the angle of the other blade relative to the handle is also different from that of the original blade.
6. The tooth-crestal bone separator according to claim 5, characterized in that The other blade is the same size as the original blade.
7. The tooth-crestal bone separator according to claim 5, wherein The original blade is used to cut the periodontal ligament on the mesial and distal sides of the tooth, and the other blade is used to cut the periodontal ligament on the labial and lingual sides.
8. The tooth-crestal bone separator according to claim 1, wherein, The connecting handle and the handle are integrated.
9. The tooth-crestal bone separator according to claim 1, wherein, The connecting handle can be detached from the handle.
10. The tooth-crestal bone separator according to claim 9, characterized in that The handle comprises a slot, and the connecting handle comprises an extension part that can be inserted into the slot; the shape of the slot is consistent with that of the extension part to prevent rotation of the extension part in the slot.
11. The tooth-crestal bone separator according to claim 10, characterized in that The extension part is detachably fixed to the slot by magnetism.
12. The tooth-crestal bone separator according to claim 1, wherein, Further comprising: the distal end of the handle has a flat surface; the surface is provided with two parallel protrusions; the extension part of the connecting handle can be inserted between the protrusions, and the extension part and the protrusions are each provided with a groove; the conical lock cover has an opening with a protrusion on its inner surface that can be inserted into the groove to achieve locking.
13. The tooth-crestal bone separator according to claim 1, wherein, The pressure is applied vertically to the pressing button, and the part of the second hand used for pressing is the thumb or index finger.