Bone fetcher for tooth implantation
By introducing components such as clasps, limiting clasps, and guide limiting rings into the bone harvesting instrument, the problem of stop ring deviation and tilting was solved, ensuring the stability of bone powder collection and drill rotation, and improving the efficiency and safety of dental implant surgery.
Patent Information
- Application Number
- CN202520305829.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-25
AI Technical Summary
There is a gap between the stop ring fitted on the outside of the bone harvester drill bit and the drill bit, which can easily cause the bone harvester drill bit to deviate and tilt during operation, affecting the bone powder collection and storage effect and the rotation performance of the drill bit.
A bone harvester comprising a connecting rod, a locking groove, and a stop guide assembly was designed. The combination structure of a locking pin, a limiting ring, a fixing rod, and a guide limiting ring enhances the stability of the stop plate and restricts the axial movement of the guide limiting assembly. Combined with the buffering effect of the rubber ring, it ensures the precise fit and rotation of the stop ring with the drill bit.
This effectively avoids the deviation and tilting of the stop ring, ensuring the collection and storage effect of bone powder and the rotation performance of the drill bit, thus improving the efficiency and safety of dental implant surgery.
Smart Images
Figure CN223886992U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bone extractor technical field, concretely is a kind of bone extractor for tooth implanting. BACKGROUND
[0002] Bone extractor is a kind of special instrument for tooth extraction and bone surgery, mainly used for tooth or tooth root extraction, bone tissue cutting and alveolar bone shaping, these instruments are usually made of stainless steel, with high strength and corrosion resistance, and are designed with special curved shape to meet the extraction needs of different teeth;
[0003] The bone extractor for tooth implanting is a special medical instrument used for accurately removing and trimming alveolar bone in dental implant surgery, which is made of durable medical-grade materials and has various types and sizes to meet different surgical needs. This tool is used to create appropriate space during surgery to ensure that the implant can be firmly implanted. Its correct use is crucial to improve the success rate of surgery and the long-term stability of the implant.
[0004] During the process of using the bone extractor for tooth implanting to treat the user's tooth bone, the drill bit of the bone extractor is driven by the control handle to drill and grind the hard tooth bone for a short time and continuously. When the drill bit of the bone extractor drills a hole to extract bone, the position of the drill bit is drilled and ground to a hole of appropriate size. The drilled hole will produce part of the bone powder. To ensure a good treatment environment during the operation of the bone extractor for tooth implanting, a stop ring for collecting bone powder is arranged in the drill bit of the bone extractor for tooth implanting. The stop ring for collecting bone powder is clamped outside the locking ring of the drill bit of the bone extractor to maintain its position. To ensure that the stop ring and the drill bit of the bone extractor have a good cooperative relationship, there is a gap between the stop ring outside the drill bit of the bone extractor and the drill bit. During the operation of the drill bit of the bone extractor, the stop ring outside the drill bit of the bone extractor may be offset and inclined, which may affect the collection and storage effect of the stop ring on bone powder and the rotation performance of the drill bit of the bone extractor. Therefore, the bone extractor for tooth implanting is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a kind of bone extractor for tooth implanting to solve the problem that there is a gap between the stop ring outside the drill bit of the bone extractor and the drill bit, and the stop ring outside the drill bit of the bone extractor may be offset and inclined during the operation of the drill bit of the bone extractor, which may affect the collection and storage effect of the stop ring on bone powder and the rotation performance of the drill bit of the bone extractor.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0007] A bone harvesting device for dental implantation includes a connecting rod, a locking groove, and a stop-guide assembly. The connecting rod has a locking groove on its inner side, and the stop-guide assembly is fixedly connected to the lower end of the connecting rod. The stop-guide assembly includes a stop plate with a locking hole on its inner side. The inner side of the locking hole engages tightly with a guide limiting assembly. The guide limiting assembly includes a locking pin, and a limiting ring is fixedly connected to the lower end of the locking pin. A rubber ring is placed inside the limiting ring. A fixing rod is fixedly connected to the outer side of the lower end of the limiting ring. A guide limiting ring is fixedly connected to the lower end of the fixing rod. A connecting post is fixedly connected to the lower end of the stop plate. A locking ring is fixedly connected to the outer side of the connecting post. A drill bit is fixedly connected to the lower end of the connecting post. A stop ring is slidably connected to the outer side of the connecting post. A flexible washer is fixedly connected to the lower end of the stop ring.
[0008] As a further optimization of this utility model, the number of the card holes is the same as the number of the card pins, the card holes are symmetrically arranged on the inner side of the stop plate, and one-third of the card pins protrude from the upper end of the stop guide assembly.
[0009] As a further optimization of this utility model, the minimum inner diameter of the limiting ring is the same as the maximum outer diameter of the locking ring, the outer diameter of the limiting ring is the same as the maximum outer diameter of the stop plate and the maximum outer diameter of the guide limiting ring, and the limiting ring is engaged with the upper side of the locking ring closest to the stop plate by a rubber ring.
[0010] As a further optimization of this utility model, the inner side of the rubber ring is in close contact with the outer side of the connecting post, the rubber ring is partially hidden in the groove opened on the inner side of the limiting ring, and the inner side of the rubber ring is in close contact with the outer side of the locking ring.
[0011] As a further optimization of this utility model, there are six fixing rods in total. The fixing rods are evenly distributed on the lower side of the limiting ring. The arc of the superior arc side of the fixing rod is the same as the arc of the outer arc surface of the limiting ring. The center line of the arc surface of the fixing rod is on the same vertical straight line as the center line of the connecting column.
[0012] As a further optimization of this utility model, the thickness of the fixing rod is half the thickness of the guide limiting ring, the length of the fixing rod is 1.5 times the length of the connecting column, and several locking rings are evenly and equidistantly distributed on the outer side of the connecting column.
[0013] As a further optimization of this utility model, the inner side of the guide limiting ring is in close contact with the outer side of the stop ring, the inner and outer diameters of the stop ring are the same as the inner and outer diameters of the flexible washer, and the guide limiting ring and the limiting retaining ring are on the same vertical line and are parallel to each other.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] In this invention, through the design of locking pins, limiting rings, fixing rods, and guide limiting rings, a high degree of stability and precision is achieved through carefully designed components and structures. The symmetrically arranged locking holes and pins enhance the structural stability of the stop plate, ensuring axial movement restriction of the guide limiting components. The precise fit between the limiting rings and locking rings, along with the design of the rubber rings, not only provides cushioning but also reduces the risk of external damage while maintaining structural compactness. The uniform distribution and curvature matching of the fixing rods provide uniform support force, enhancing the structural strength and stability of the limiting rings. The optimized dimensional relationship between the fixing rods and the guide limiting rings optimizes material usage, ensuring structural compactness and functionality. The tight fit between the guide limiting rings and the stop rings ensures precise guidance and positioning while providing consistent cushioning protection. During use, the device can adapt to different working angles, avoiding deviation or tilting of the stop rings, ensuring effective bone powder collection and storage, and drill bit rotation performance, thereby improving the efficiency and safety of dental implant surgery. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the connecting column structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the stop ring structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the guide and limiting component structure of this utility model.
[0020] In the diagram: 1. Connecting rod; 2. Engaging groove;
[0021] 3. Stop guide assembly; 31. Stop plate; 32. Clip hole;
[0022] 33. Guide and limit assembly; 331. Locking pin; 332. Limiting ring; 333. Rubber ring; 334. Fixing rod; 335. Guide and limit ring;
[0023] 4. Connecting post; 5. Locking ring; 6. Drill bit; 7. Stop ring; 8. Flexible washer. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0026] Please see Figures 1-4 This utility model provides a technical solution:
[0027] A bone harvesting device for dental implantation includes a connecting rod 1, a locking groove 2, and a stop and guide assembly 3. The connecting rod 1 has a locking groove 2 on its inner side, and the stop and guide assembly 3 is fixedly connected to its lower end. The stop and guide assembly 3 includes a stop plate 31, with a locking hole 32 on its inner side. The inner side of the locking hole 32 engages tightly with a guide and limiting assembly 33. The guide and limiting assembly 33 includes a locking pin 331, and a limiting ring 332 is fixedly connected to the lower end of the locking pin 331 for limiting the movement. A rubber ring 333 is installed on the inner side of the retaining ring 332. A fixing rod 334 is fixedly connected to the outer side of the lower end of the retaining ring 332. A guide limiting ring 335 is fixedly connected to the lower end of the fixing rod 334. A connecting post 4 is fixedly connected to the lower end of the stop plate 31. A locking ring 5 is fixedly connected to the outer side of the connecting post 4. A drill bit 6 is fixedly connected to the lower end of the connecting post 4. A stop ring 7 is slidably connected to the outer side of the connecting post 4. A flexible washer 8 is fixedly connected to the lower end of the stop ring 7.
[0028] As a further implementation of this solution, the number of locking holes 32 is the same as the number of locking pins 331. The locking holes 32 are symmetrically arranged inside the stop plate 31, and one-third of the locking pins 331 protrude from the upper end of the stop guide assembly 3. By symmetrically arranging and matching the number of locking holes 32 and locking pins 331, the structural stability and installation reliability of the stop plate 31 are enhanced, and the axial movement of the guide limit assembly 33 can be restricted.
[0029] As a further implementation of this solution, the minimum inner diameter of the limiting ring 332 is the same as the maximum outer diameter of the locking ring 5, and the outer diameter of the limiting ring 332 is the same as the maximum outer diameter of the stop plate 31 and the maximum outer diameter of the guide limiting ring 335. The limiting ring 332 is engaged with the upper side of the locking ring 5 closest to the stop plate 31 by the rubber ring 333. The diameters of the limiting ring 332 and the locking ring 5 are precisely matched, ensuring a tight fit between the components and the correct installation position.
[0030] As a further implementation of this solution, the inner side of the rubber ring 333 is in close contact with the outer side of the connecting post 4, and part of the rubber ring 333 is hidden in the groove opened on the inner side of the limiting ring 332. The inner side of the rubber ring 333 is in close contact with the outer side of the locking ring 5. The design of the rubber ring 333 not only provides a buffering effect, but also reduces the risk of external damage by being hidden in the groove, while maintaining the compactness of the structure and providing vertical movement restriction for the guide limiting component 33.
[0031] As a further implementation of this solution, there are six fixing rods 334 in total. The fixing rods 334 are evenly distributed on the lower side of the limiting ring 332. The curvature of the superior arc side of the fixing rod 334 is the same as the curvature of the outer arc surface of the limiting ring 332. The center line of the arc surface of the fixing rod 334 is on the same vertical straight line as the center line of the connecting column 4. The even distribution and curvature matching of the fixing rods 334 provide uniform support force and enhance the structural strength and stability of the limiting ring 332.
[0032] As a further implementation of this solution, the thickness of the fixing rod 334 is half the thickness of the guide limiting ring 335, the length of the fixing rod 334 is 1.5 times the length of the connecting column 4, and several locking rings 5 are evenly and equidistantly distributed on the outer side of the connecting column 4. The dimensional relationship between the fixing rod 334 and the guide limiting ring 335 optimizes the use of materials while ensuring the compactness and functionality of the structure.
[0033] As a further implementation of this solution, the inner side of the guide limiting ring 335 is in close contact with the outer side of the stop ring 7. The inner and outer diameters of the stop ring 7 are the same as the inner and outer diameters of the flexible washer 8. The guide limiting ring 335 and the limiting ring 332 are on the same vertical line and are parallel to each other. The close cooperation between the guide limiting ring 335 and the stop ring 7 ensures accurate guidance and positioning, while the matching diameter with the flexible washer 8 provides consistent buffer protection.
[0034] Workflow: When using this bone harvester for dental implantation, after mounting the device on the control handle via connecting rod 1 and locking groove 2, first, place the guide limiting component 33 on the outside of the drill bit 6, allowing the guide limiting component 33 to move outside the drill bit 6, with the end of the guide limiting component 33 containing the locking pin 331 facing the connecting rod 1, so that the limiting ring 332 is placed on the outside of the connecting post 4. Under the continuous movement of the guide limiting component 33, the limiting ring 332 slides outside the connecting post 4, and the rubber ring 333 placed on the inner side of the limiting ring 332 alternately slides and tightens with the locking ring 5 fixedly connected to the connecting post 4 and its outer side. When the rubber ring 333 contacts the locking ring 5, it undergoes elastic deformation until the limiting ring 332 moves to the upper side of the locking ring 5 closest to the stop plate 31. At this time, the limiting ring 332 is tightly attached to the lower side of the stop plate 31. Simultaneously, under the restraining effect of the rubber ring 333, the limiting ring 332 and its connected components are restricted to the outside of the connecting post 4. Before the limiting ring 332 is engaged between the locking ring 5 and the stop plate 31, the position of the limiting ring 332 needs to be adjusted so that the two locking pins 331 fixedly connected to the upper end of the limiting ring 332 are aligned with the locking holes 32 opened on the inner side of the stop plate 31, so that the limiting ring 332 can engage with the lock. After the retaining ring 5 is positioned between the stop plate 31 and the locking ring 32, the locking pin 331 can engage in the locking hole 32, thereby restricting the axial rotational movement of the limiting ring 332. This ensures that the axis of the guide limiting assembly 33 is always aligned with the axis of the connecting post 4 and the drill bit 6. Finally, the stop ring 7 can be inserted between the drill bit 6 and the guide limiting ring 335 using a known method. At this time, the outer side of the stop ring 7 is always in close contact with the inner side of the guide limiting ring 335. When the engaging end of the stop ring 7 moves to the outer side of the connecting post 4 and engages with the locking ring 5, the engaging end of the stop ring 7 undergoes a slight elastic deformation outward and expands towards the direction of the fixing rod 334. This allows the stop ring 7 to be positioned on the outside of the connecting post 4 using the original technology. At this time, the guide limiting ring 335 is always in close contact with the stop ring 7, thus ensuring that the axis of the stop ring 7 is always on the same straight line as the axis of the connecting post 4 and the drill bit 6. Furthermore, when using this bone harvester for dental implantation, as the drill bit 6 works at different angles, the stop ring 7 indirectly contacts the patient's gum through the elastic deformation flexible washer 8, which can adapt to working on different bone planes. This device avoids the stop ring 7, which is fitted on the outside of the bone harvester drill bit 6, from shifting or tilting, ensuring the effective collection and storage of bone powder by the stop ring 7, as well as the rotational performance of the bone harvester drill bit 6.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bone harvesting device for dental implantation, comprising a connecting rod (1), a locking groove (2), and a stop and guide assembly (3), characterized in that: The connecting rod (1) has a locking groove (2) on its inner side, and a stop guide assembly (3) is fixedly connected to the lower end of the connecting rod (1); The stop guide assembly (3) includes a stop plate (31), and a locking hole (32) is provided on the inner side of the stop plate (31). The inner side of the locking hole (32) is engaged and tightly fitted with the guide limiting assembly (33). The guide limiting assembly (33) includes a locking pin (331). A limiting ring (332) is fixedly connected to the lower end of the locking pin (331). A rubber ring (333) is placed on the inner side of the limiting ring (332). A fixing rod (334) is fixedly connected to the outer side of the lower end of the limiting ring (332). A guide limiting ring (335) is fixedly connected to the lower end of the fixing rod (334). A connecting post (4) is fixedly connected to the lower end of the stop plate (31). A locking ring (5) is fixedly connected to the outside of the connecting column (4), a drill bit (6) is fixedly connected to the lower end of the connecting column (4), a stop ring (7) is slidably connected to the outside of the connecting column (4), and a flexible washer (8) is fixedly connected to the lower end of the stop ring (7).
2. The bone harvesting device for dental implantation according to claim 1, characterized in that: The number of the card holes (32) is the same as the number of the card pins (331). The card holes (32) are symmetrically arranged inside the stop plate (31). One-third of the card pins (331) protrude from the upper end of the stop guide assembly (3).
3. The bone harvesting device for dental implantation according to claim 1, characterized in that: The minimum inner diameter of the limiting ring (332) is the same as the maximum outer diameter of the locking ring (5). The outer diameter of the limiting ring (332) is the same as the maximum outer diameter of the stop plate (31) and the maximum outer diameter of the guide limiting ring (335). The limiting ring (332) is engaged with the upper side of the locking ring (5) closest to the stop plate (31) by a rubber ring (333).
4. The bone harvesting device for dental implantation according to claim 1, characterized in that: The inner side of the rubber ring (333) is in close contact with the outer side of the connecting post (4), and part of the rubber ring (333) is hidden in the groove opened inside the limiting ring (332). The inner side of the rubber ring (333) is in close contact with the outer side of the locking ring (5).
5. A bone harvesting device for dental implants according to claim 1, characterized in that: There are six fixing rods (334) in total. The fixing rods (334) are evenly distributed on the lower side of the limiting ring (332). The arc of the larger arc side of the fixing rod (334) is the same as the arc of the outer arc surface of the limiting ring (332). The center line of the arc surface of the fixing rod (334) is on the same vertical straight line as the center line of the connecting column (4).
6. A bone harvesting device for dental implantation according to claim 1, characterized in that: The thickness of the fixing rod (334) is half the thickness of the guide limiting ring (335), the length of the fixing rod (334) is 1.5 times the length of the connecting column (4), and a number of locking rings (5) are evenly and equidistantly distributed on the outer side of the connecting column (4).
7. A bone harvesting device for dental implantation according to claim 1, characterized in that: The inner side of the guide limiting ring (335) is in close contact with the outer side of the stop ring (7). The inner and outer diameters of the stop ring (7) are the same as the inner and outer diameters of the flexible washer (8). The guide limiting ring (335) and the limiting ring (332) are on the same vertical line and are parallel to each other.