Dental extraoral scanning and positioning integrated scanning rod

Abstract

The utility model discloses a dental extraoral scanning and positioning integrated scanning rod, and belongs to the technical field of dental implantation. A dental extraoral scanning and positioning integrated scanning rod comprises a scanning section body, a fastening hole is formed in the upper end face of the scanning section body, a mounting groove communicated with the fastening hole is formed in the lower end face of the scanning section body, a matching section body is arranged on the lower end face of the scanning section body, and a fastening assembly is arranged between the matching section body and the mounting groove; by integrating the scanning section body, the fastening hole, the mounting groove, the center screw, the matching section body and the fastening assembly, integrated design is achieved, the structure of the scanning rod is simplified, positioning and stability in the scanning process are ensured through the assembly relation, and the fastening assembly can be conveniently and rapidly assembled no matter the fastening groove is matched through threaded connection. The central screw is effectively prevented from loosening by the aid of the connecting seat and the connecting sleeve which are in interference connection, so that accuracy and consistency of scanning results are guaranteed, and success rate of oral treatment and repair is greatly increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dental implant technology field especially relates to a dental extraoral scanning positioning integrated scanning rod. BACKGROUND

[0002] In the dental field, the extraoral scanning technology has become an indispensable part of modern oral treatment and repair, and the technology can obtain accurate oral models by high-precision scanning equipment for three-dimensional scanning of the patient's oral cavity, so as to provide reliable data support for subsequent treatment and repair, however, in the extraoral scanning process, the scanning rod as a key component connecting the scanning device and the oral cavity, its performance and stability are directly related to the accuracy and reliability of the scanning result.

[0003] In the prior art, pure PEEK (polyether ether ketone) material is widely used in the manufacture of scanning rods due to its good biocompatibility and corrosion resistance, however, the pure PEEK material has some inherent defects in the application of the scanning rod, first, the elastic modulus of the pure PEEK material is relatively low, about 3-4GPa, which leads to the edge deformation of the thin-walled cylinder (such as some parts of the scanning rod, the wall thickness is less than or equal to 0.5mm) when subjected to a certain torque (such as 0.15Nm), this deformation not only affects the accuracy of the scanning rod, but also may cause errors in the scanning result, thereby affecting the subsequent treatment and repair effect;

[0004] Secondly, the traditional scanning rod is usually fixed to the abutment by a center screw, however, due to the low friction coefficient between PEEK and the screw, about 0.1-0.2, the screw is easy to loosen during the oral operation, such as due to vibration or improper operation, the screw is easy to loosen, which not only may cause the scanning rod to fall off, but also may cause damage to the patient's oral cavity, and there is great safety hidden danger. SUMMARY

[0005] The utility model discloses a kind of dental extraoral scanning positioning integrated scanning rods to solve the problems of prior art.

[0006] To achieve the above object, the utility model adopts the following technical scheme: a kind of dental extraoral scanning positioning integrated scanning rod, including scanning section body, the upper end surface of the scanning section body is provided with fastening hole, the lower end surface of the scanning section body is provided with installation slot communicated with fastening hole, the installation slot is installed with center screw, the lower end surface of the scanning section body is equipped with cooperation section body, cooperation section body and the installation slot between are equipped with fastening assembly.

[0007] By adopting the above technical solution, this patent proposes a dental extraoral scanning and positioning integrated scanning rod. By integrating the scanning section body, fastening hole, mounting groove, center screw, mating section body and fastening components, the integrated design of the scanning rod is realized. This design not only simplifies the structure of the scanning rod and improves its overall stability and reliability, but also facilitates precise positioning during extraoral scanning, thereby ensuring the accuracy and consistency of the scanning results.

[0008] Optionally, the scanning segment body is matrix-shaped, and an arc-shaped chamfer is provided between the outer periphery and the lower end face of the scanning segment body.

[0009] By adopting the above technical solution, the scanning segment is designed in a matrix shape, and an arc-shaped chamfer is set between its outer periphery and lower end face. This design enhances the rigidity and deformation resistance of the scanning rod. At the same time, the arc-shaped chamfer also helps to reduce the stimulation of the patient's oral tissues during the scanning process, improving the comfort and safety of the scanning.

[0010] Optionally, the diameter of the mounting groove is larger than the diameter of the fastening hole, and a first limiting step is provided at the connection between the mounting groove and the fastening hole.

[0011] By adopting the above technical solution, the diameter of the mounting groove is larger than the diameter of the fastening hole, and a first limiting step is set at the connection. This design ensures the stability and accuracy of the center screw during installation. The first limiting step can effectively prevent the screw from loosening or falling off during installation, thereby improving the overall stability and durability of the scanning rod.

[0012] Optionally, the central screw has a three-section structure, consisting of an upper section, a middle section, and a lower section from top to bottom. The upper section, the middle section, and the lower section are all cylinders. A second limiting step is provided at the connection between the middle section and the upper section. The cross-sectional area at the connection between the middle section and the lower section gradually decreases.

[0013] By adopting the above technical solution, the center screw adopts a three-section structure, including an upper section, a middle section and a lower section. A second limiting step is provided at the connection between the middle section and the upper section, and the cross-sectional area at the connection between the middle section and the lower section gradually decreases. This design not only facilitates the manufacturing and installation of the center screw, but also enhances the strength and stability of the screw. At the same time, it helps to prevent the screw from loosening and falling off during the installation process, thereby improving the overall performance of the scanning rod.

[0014] Optionally, the mating section is cylindrical, and a connecting groove is provided at the lower end of the mating section. There is a height difference between the lower end face of the mating section and the lower end face of the center screw.

[0015] By adopting the above technical solution, this design helps to achieve the positioning and connection between the mating segment and the central screw. At the same time, the height difference design can reduce the pressure and stimulation on the patient's oral tissues during the scanning process, improving the comfort and safety of the scanning.

[0016] Optionally, the fastening assembly includes a connecting kit installed on the upper end of the mating section body. The inner circumference of the connecting kit is connected to the center screw, and the outer circumference of the connecting kit and the inner circumference of the mounting groove are respectively provided with interconnected threads. A fastening groove is provided on the inner side of the mating section body.

[0017] By adopting the above technical solution, this design ensures the stability and reliability of the scanning bar during installation. The threaded connection and fastening groove design can effectively prevent the screws from loosening and falling off, thereby improving the durability and service life of the scanning bar.

[0018] Optionally, the fastening assembly includes a connecting seat, the upper end of which is fitted with a connecting kit that connects to the outer periphery of the center screw, a connecting step is provided between the connecting kit and the connecting seat, a mating groove is provided on the inner sidewall of the mounting groove, the mating groove is interference-fitted with the connecting step, and the outer periphery of the connecting kit is interference-fitted with the inner wall of the mounting groove.

[0019] By adopting the above technical solution, this design further enhances the versatility of the scanning rod in installation and the stability and reliability of the installation process. The interference fit design can also effectively prevent the screws and connecting components from loosening and falling off, thereby improving the overall performance and safety of the scanning rod. At the same time, the design of this fastening component is also easy to disassemble and replace, providing convenience for subsequent maintenance and upkeep.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This application achieves an integrated design by combining the scanning segment, fastening hole, mounting groove, center screw, mating segment, and fastening components. This design not only simplifies the structure of the scanning rod but also ensures positioning and stability during the scanning process through assembly relationships. In particular, the design of the fastening components, whether using threaded connections with fastening grooves or interference fits between the connector and the connecting kit, effectively prevents the center screw from loosening, thereby ensuring the accuracy and consistency of the scanning results and greatly improving the success rate of oral treatment and restoration.

[0022] 2. The design of the mounting groove and fastening hole, as well as the setting of the first and second limiting steps, ensures the stability and accuracy of the center screw during installation. This design not only facilitates the quick installation and disassembly of the scanning rod, but also effectively prevents the screw from loosening or falling off during installation or use, thereby improving the overall stability and durability of the scanning rod.

[0023] 3. The scanning segment is designed in a matrix shape, with an arc-shaped chamfer between its outer periphery and lower end face. This innovative design not only optimizes the mechanical properties of the scanning rod, significantly enhancing its rigidity and resistance to deformation, but also reduces stimulation to the patient's oral tissues during scanning, improving the comfort and safety of scanning. This is crucial for oral treatment and restoration that require high-precision scanning. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the scanning rod of this utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the scanning rod of this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of the central screw of this utility model;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the scanning segment of this utility model;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the matching segment of this utility model;

[0029] Figure 6 This is a cross-sectional structural diagram of Embodiment 2 of the present invention;

[0030] Figure 7 This is a schematic diagram of the three-dimensional structure of the mating segment in Embodiment 2 of this utility model.

[0031] In the diagram: 1. Scanning segment; 101. Chamfered corner; 2. Fastening hole; 3. Mounting groove; 301. First limiting step; 4. Center screw; 41. Upper segment; 42. Middle segment; 43. Lower segment; 44. Second limiting step; 5. Mating segment; 501. Connecting groove; 6. Fastening assembly; 61. Connecting kit; 62. Thread; 63. Fastening groove; 64. Connecting seat; 65. Connecting step; 66. Butt joint groove. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] like Figure 1 As shown in Figure 5, the specific solution of the embodiment is as follows: A dental extraoral scanning and positioning integrated scanning rod includes a scanning segment 1. The scanning segment 1 is made of pure PEEK material. PEEK material has good biocompatibility and corrosion resistance, making it suitable for the oral medical environment. PEEK material also has a light weight and a certain degree of elasticity, which helps to reduce patient discomfort. A QR code is laser-printed on the surface of the scanning segment 1. The QR code facilitates visual recognition in the later stage and can quickly track the information of the scanning rod, such as production date, batch number, calibration data, etc., thereby improving management efficiency and traceability.

[0035] The scanning segment 1 is matrix-shaped. This matrix design enhances the rigidity and deformation resistance of the scanning rod, ensuring scanning accuracy. The outer periphery and lower end face of the scanning segment 1 are provided with an arc-shaped chamfer 101. The design of the scanning segment 1 as a matrix increases the strength and rigidity of the structure. At the same time, the arc-shaped chamfer 101 between the outer periphery and the lower end face reduces the stimulation of the patient's oral tissues during the scanning process, improving the comfort and safety of the scanning.

[0036] The upper end face of the scanning segment 1 is provided with a fastening hole 2, and the lower end face of the scanning segment 1 is provided with a mounting groove 3 communicating with the fastening hole 2. The diameter of the mounting groove 3 is larger than the diameter of the fastening hole 2. A first limiting step 301 is provided at the connection between the mounting groove 3 and the fastening hole 2. The fastening hole 2 is used to connect or fix other components, and the mounting groove 3 is used to accommodate the center screw 4. The diameter of the mounting groove 3 is larger than the fastening hole 2, forming the first limiting step 301. This design ensures the stability and accuracy of the center screw 4 during the installation process and prevents the screw from loosening or falling off during the installation process.

[0037] A central screw 4 is installed in the mounting groove 3. The central screw 4 has a three-section structure, consisting of an upper section 41, a middle section 42, and a lower section 43 from top to bottom. The upper section 41, the middle section 42, and the lower section 43 are integrally formed. This integral design not only facilitates manufacturing and installation but also enhances the strength and stability of the screw. The upper section 41, the middle section 42, and the lower section 43 are all cylinders. A second limiting step 44 is provided at the connection between the middle section 42 and the upper section 41. The second limiting step 44 at the connection between the middle section 42 and the upper section 41 further enhances the stability of the screw. The cross-sectional area at the connection between the middle section 42 and the lower section 43 gradually decreases. The diameter of the fastening hole 2 is smaller than the diameter of the upper section 41.

[0038] The lower end face of the scanning segment 1 is provided with a mating segment 5, which is made of titanium alloy. Titanium alloy has high strength and good biocompatibility. The surface of the mating segment 5 is coated with titanium dioxide nanotubes by sandblasting and anodizing. The matte effect after sandblasting can avoid reflection and interference with visual recognition accuracy. The wall thickness of the mating segment 5 is 0.3mm. The mating segment 5 is cylindrical and has a diameter of 50nm-100nm. The design of the wall thickness and diameter can reduce weight while ensuring strength. A connecting groove 501 is opened at the lower end of the mating segment 5. There is a height difference between the lower end face of the mating segment 5 and the lower end face of the central screw 4. The height difference design helps to reduce the pressure and stimulation on the patient's oral tissues during scanning, improving the comfort and safety of scanning.

[0039] A fastening assembly 6 is provided between the mating section 5 and the mounting groove 3. The fastening assembly 6 includes a connecting kit 61 installed on the upper end of the mating section 5. The inner circumference of the connecting kit 61 is connected to the center screw 4. The outer circumference of the connecting kit 61 and the inner circumference of the mounting groove 3 are respectively provided with interconnecting threads 62. The pitch of the threads 62 is 0.15mm-0.35mm. A fastening groove 63 is provided on the inner side of the mating section 5. The fastening groove 63 is hexagonal. The hexagonal design facilitates the assembly and disassembly of the mating section 5. The connecting kit 61 in the fastening assembly 6 is connected to the mounting groove 3 through the threads 62. The pitch of the threads 62 is between 0.15mm-0.35mm, which ensures the tightness and stability of the connection. The threaded connection 62 facilitates disassembly and replacement, providing convenience for subsequent maintenance and upkeep.

[0040] like Figure 6As shown in Figure 7, in some embodiments, the fastening assembly 6 may also be configured as follows: the fastening assembly 6 includes a connecting seat 64, the upper end of which is fitted with a connecting kit 61 that connects to the outer periphery of the center screw 4. The outer periphery of the connecting kit 61 has several cross-sections. A connecting step 65 is provided between the connecting kit 61 and the connecting seat 64. A mating groove 66 is provided on the inner sidewall of the mounting groove 3. The mating groove 66 is interference-fitted with the connecting step 65. The outer periphery of the connecting kit 61 is interference-fitted with the inner wall of the mounting groove 3. The interference fit is 0.02mm-0.05mm. The connecting seat 64 and the connecting kit 61 utilize the difference in thermal expansion (titanium α = 8.6 × 10⁻⁻⁴). 6 / ℃, PEEKα=47×10⁻ 6 ( / ℃) enables low-temperature assembly and room-temperature fastening;

[0041] Another fastening component 6 is designed with an interference fit, which ensures the strength and reliability of the connection. This design not only improves the overall performance of the scanning rod, but also makes it easier to maintain a stable connection under different temperature conditions.

[0042] 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 dental extra-oral scanning positioning all-in-one scanning bar, characterized in that, The scanning section body is provided with a fastening hole in the upper end face, and a mounting groove in the lower end face, which is communicated with the fastening hole and is provided with a center screw.

2. The integrated scanning rod for extra-oral scanning and positioning of a dental object according to claim 1, characterized in that: The scanning section body is in a matrix shape, and is provided with an arc-shaped chamfer between the outer periphery and the lower end face.

3. The integrated scanning rod for extra-oral scanning and positioning of a dental object according to claim 1, characterized in that: The diameter of the mounting groove is larger than that of the fastening hole, and the connecting part of the mounting groove and the fastening hole is provided with a first limiting step.

4. The integrated scanning rod for extra-oral scanning and positioning of a dental scan according to claim 1, characterized in that: The center screw is in a three-section structure, and is sequentially provided with an upper section, a middle section and a lower section from top to bottom.

5. The integrated scanning rod for extra-oral scanning and positioning of a dental scan according to claim 1, characterized in that: The lower end of the cooperation section body is provided with a connecting groove, and the lower end face of the cooperation section body and the lower end face of the center screw are provided with a height difference.

6. The integrated scanning rod for extra-oral scanning and positioning of a dental scan according to claim 1, characterized in that: The fastening assembly comprises a connecting sleeve mounted on the upper end of the cooperation section body, and the inner periphery of the connecting sleeve is connected with the center screw.

7. The integrated scanning rod for extra-oral scanning and positioning of a dental scan according to claim 1, characterized in that: The fastening assembly comprises a connecting seat, and the upper end of the connecting seat is provided with a connecting sleeve connected with the outer periphery of the center screw. The inner side wall of the mounting groove is provided with a butt joint groove, and the butt joint groove and the connecting step are in interference connection, and the outer periphery of the connecting sleeve and the inner wall of the mounting groove are in interference connection.

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