A scanning bar and scanning system thereof

Abstract

This application belongs to the field of medical device technology and relates to a scanning rod, comprising: a rod body, which includes a first rod segment, a second rod segment, and a third rod segment connected sequentially; one side of the first rod segment has at least one polygonal protrusion, and the top of the polygonal protrusion has at least one identification object for scanning by an external scanning head; the identification objects on the first rod segment have a unique corresponding coding combination; the coding combination includes the number, shape, and placement position of the identification objects on the first rod segment, or a combination of the three; or, the first rod segment includes a first region and a second region, and the coding combination includes the number, shape, and placement position of the identification objects in the first and second regions, or a combination of the three. The technical solution provided by this application enables unified management and rapid positioning in actual operation, facilitating rapid and efficient panoramic scanning within a limited field of view.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a scanning rod and its scanning system. Background Technology

[0002] With the continuous development of digital dental technology, dental scanning equipment (such as intraoral scanners) is being used more and more widely in orthodontic, prosthodontic, and implant treatments. To assist dental scanning equipment in accurately identifying intraoral structures, scanning rods are gradually being introduced in clinical practice as positioning reference tools. The position of the scanning rod helps to obtain the spatial coordinates and structural features within the oral cavity, thereby improving the accuracy of digital modeling.

[0003] Most existing scanning poles have simple structures and lack effective recognition features. During the scanning process, the scanning equipment needs to repeatedly fit and stitch the data using algorithms, resulting in low scanning efficiency and susceptibility to accuracy interference. In addition, some scanning poles can obstruct dental implants or gingival tissue when installed in the oral cavity, increasing the operator's workload and patient discomfort. In some cases, multiple scans may be required to fill in missing data, increasing the overall operation time and scanning cost.

[0004] It is evident that the scanning rods in existing technologies are difficult to manage uniformly and position quickly in actual operation, which is not conducive to achieving fast and efficient panoramic scanning within a limited field of view. Utility Model Content

[0005] The technical problem this application aims to solve is that the scanning rod is difficult to manage and quickly position in actual operation, which is not conducive to achieving fast and efficient panoramic scanning within a limited field of view.

[0006] To solve the above-mentioned technical problems, this application provides a scanning rod, which adopts the following technical solution:

[0007] The scanning rod includes a rod body, which comprises a first rod section, a second rod section, and a third rod section connected in sequence.

[0008] The first segment of the rod has at least one polygonal protrusion on one side, and the top of the polygonal protrusion has at least one identification body for scanning by an external scanning head;

[0009] The identification element on the first segment of the rod has a unique corresponding code combination;

[0010] The coding combination includes the number and shape of the identifiers, the placement of the identifiers on the first segment of the rod, or a combination of the three:

[0011] Alternatively, the first segment of the rod may include a first region and a second region, and the coding combination may include the number, shape, placement, or a combination of the three of the identifiers in the first region and the second region.

[0012] Furthermore, the first segment of the rod includes a first region and a second region;

[0013] The polygonal boss includes a first boss and a second boss.

[0014] The first region and the second region are respectively provided with the first boss and the second boss, and the identification body is provided in the first region and / or the second region.

[0015] Furthermore, the first segment of the rod includes a first region and a second region;

[0016] The first segment of the rod is provided with a polygonal boss, which covers the first region and the second region;

[0017] Or a polygonal boss may be disposed in the first region or the second region;

[0018] The identification device is provided in the first region and / or the second region.

[0019] Furthermore, the polygonal protrusion is provided with at least one dividing groove, which divides the identification surface of the polygonal protrusion.

[0020] Furthermore, the widths at both ends of the first and third rod segments are greater than those of the second rod segment.

[0021] Furthermore, a fixing member is provided on the side opposite to the polygonal boss of the third section of the rod, and the rod is installed on the external implant through the fixing member.

[0022] Furthermore, the identification body can be detachably installed on the polygonal boss or configured as an integrally formed structure with the polygonal boss.

[0023] Furthermore, the first segment, the second segment, and the third segment are integrally formed.

[0024] Furthermore, the identification element is set to be circular.

[0025] To address the aforementioned technical problems, this application also provides a scanning system that employs the following technical solution:

[0026] The scanning system includes: a scanning head, a dental implant, and at least two of the scanning rods;

[0027] The scanning bar is mounted on the dental arch implant, or multiple scanning bars are mounted on the dental arch implant at intervals, and the scanning head scans at least one of the first bar segments.

[0028] Furthermore, the first scanning bar is provided with at least two of the identification objects, and the identification objects on the second scanning bar are moved at least one identification object position relative to the identification objects on the first scanning bar, or the number of identification objects is increased or decreased.

[0029] Furthermore, different combinations of the codes correspond to scanning rods of different lengths;

[0030] Alternatively, different combinations of the codes may correspond to scanning rods of the same length but different IDs.

[0031] Compared with the prior art, the embodiments of this application have the following main advantages:

[0032] This application utilizes a rod structure comprising a first segment, a second segment, and a third segment connected sequentially. The first segment primarily carries identification information; the second segment serves as a transition segment, facilitating insertion into the oral cavity or enabling scanning spacing control; and the third segment supports or connects external equipment. This structure facilitates both information density and structural stability within a limited space, improving the efficiency and stability of the scanning rod's placement in different oral structures. One side of the first segment has at least one polygonal protrusion, with at least one identification element on the top of the protrusion for scanning by an external scanning head. The polygonal protrusion provides sufficient planes or edges to support the identification element structure, improving reflection characteristics or identification boundaries under laser, structured light, and radiographic scanning methods. The polygonal structure can more accurately form edge features and enhance anti-interference capabilities, thereby improving scanning accuracy and the robustness of the identification algorithm. The identification element on the first segment has a unique corresponding code combination. During intraoral scanning, the scanning rod number is quickly obtained by recognizing the coded pattern, achieving a fully automatic identification mechanism without manual recording or matching, significantly improving the efficiency of doctors' intraoperative operations and the system's ability to distinguish multiple rods simultaneously. The coding combination includes the number, shape, and placement position of the identifier on the first segment of the rod, or a combination of all three. Alternatively, the first segment of the rod includes a first region and a second region, and the coding combination includes the number, shape, and placement position of the identifier in the first region and the second region, or a combination of all three. This allows for exponential expansion of the coding combination; effectively supports unique identification requirements in high-density deployments, improving system scalability and identification granularity. The coding combination is flexible and modular; it can adapt to different types of oral scanning device recognition algorithms; it significantly improves manufacturing versatility and cross-compatibility, enabling standardized production, personalized configuration, and cross-device compatibility, lowering the barrier to entry and enhancing system value. This application achieves high-precision and unique identification of the scanning rod within a limited space by setting a combinable coding identification structure in the first segment of the rod and using a regional layout method to combine and code the number, shape, and placement of the identification objects. This not only improves identification efficiency and reliability but also supports advanced functions such as batch standardization, personalized adaptation, and automatic scanning processing of the device. It significantly optimizes the user experience and data processing effect of oral medical devices in the clinical environment, enabling unified management and rapid positioning in actual operation, and facilitating rapid and efficient panoramic scanning within a limited field of view. Attached Figure Description

[0033] To more clearly illustrate the solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A schematic diagram of the structure of a scanning rod according to an embodiment of this application is shown;

[0035] Figure 2 A schematic diagram of the structure of a scanning system according to an embodiment of this application is shown;

[0036] Reference numerals: 1. Rod body; 11. First rod segment; 111. First region; 112. Second region; 12. Second rod segment; 13. Third rod segment; 2. Polygonal boss; 3. Identifier; 4. Fixing element; 5. Scanning head; 6. Dental implant. Detailed Implementation

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0040] Embodiment 1 of the scanning bar of this application

[0041] like Figure 1 As shown, this application embodiment provides a scanning rod, which includes a rod body 1, and the rod body 1 includes a first rod body 11, a second rod body 12 and a third rod body 13 connected in sequence;

[0042] The first section of the rod 11 has at least one polygonal protrusion 2 on the side opposite to the external scanning head 5, and at least one identification body 3 is provided on the top of the polygonal protrusion 2.

[0043] In this embodiment, the scanning rod comprises three sequentially connected parts: a first section 11 at the head for mounting the identification element 3, a second section 12 in the middle with a slender structure to reduce obstruction, and a third section 13 at the tail for fixation. A polygonal boss 2 and the identification element 3 are mounted on the top of the first section 11 to distinguish the model. By dividing the scanning rod into three sections, with the polygonal boss 2 and the top identification element 3 on the first section 11, the scanning head 5 can quickly identify the type and spatial position of the scanning rod during scanning via the identification element 3, enhancing positioning accuracy and recognition efficiency. The polygonal boss 2 provides structural features, facilitating optical system recognition and registration.

[0044] The identification element 3 on the first segment 11 has a unique corresponding code combination;

[0045] In this embodiment, twelve coding combinations are designed. For example, three identifiers 3 are arranged in an equilateral triangle in the first region 111, and two identifiers 3 are arranged diagonally. After software recognition, they can be directly labeled as "scanning rod one," "scanning rod two," etc., to achieve automatic numbering and modeling. Since each identifier 3 on the first segment rod 11 has a unique coding combination, the system can quickly identify the corresponding numbered scanning rod through scanning, which is beneficial for surgical navigation, model positioning, and subsequent data annotation and analysis.

[0046] The coding combination includes the number and shape of the identification body 3, the position of the identification body 3 on the first segment 11, or a combination of the three:

[0047] Alternatively, the first segment 11 may include a first region 111 and a second region 112, and the coding combination may include the number, shape, setting position, or combination of the three of the identification body 3 in the first region 111 and the second region 112.

[0048] The coding combination includes: the number and shape of the identification body 3, the setting position of the identification body 3 on the first segment rod 11, or a combination of the three.

[0049] In this embodiment, the different encoding combinations on each scanning bar include, but are not limited to:

[0050] (1) The number of identification bodies 3 is different for each first segment rod 11;

[0051] (2) The location of the identification body 3 of each first segment rod 11 is different (e.g., a specific setting area);

[0052] (3) The shape of the identification body 3 is different for each first segment rod 11;

[0053] (4) At least one of the following is different in the number, shape and setting position of the identification body 3 of each first segment rod 11.

[0054] In another embodiment, the first segment 11 includes a first region 111 and a second region 112, and the coding combination includes the number, shape, setting position, or combination of the three of the identifiers 3 in the first region 111 and the second region 112.

[0055] In this embodiment, the different encoding combinations on each scanning bar include, but are not limited to:

[0056] (1) The number of identification objects 3 in the first region 111 is the same, while the number of identification objects 3 in the second region 112 is different;

[0057] (2) The number of identification objects 3 in the first region 111 is different, while the number of identification objects 3 in the second region 112 is the same;

[0058] (3) The number of identification bodies 3 in the first region 111 and the second region 112 of at least two first segment rods 11 is the same, but the location of the identification bodies 3 (e.g., a specific setting area) is different.

[0059] (4) The number, shape and placement of the identifiers 3 on the first region 111 and the second region 112 are different.

[0060] Specifically, one scanning bar has two circular identifiers 3 in the first area 111 and one circular identifier 3 in the second area 112; the other model has three circular identifiers 3 in the first area 111 and no circular identifiers 3 in the second area 112. Differentiation can also be achieved by changing the symmetrical position of the circular identifiers 3.

[0061] In one embodiment, the identifier 3 is set to be circular.

[0062] The embodiments described above in this application achieve encoding variations through differences in the number of identification bodies 3, their regional positional distribution, or positional combinations. This expands the encoding rules, improves recognizability, and facilitates the differentiation of scanning rods of more types or lengths. In addition, the identification body 3 can also be other shapes such as squares or rhombuses.

[0063] In one embodiment, the first segment 11 includes a first region 111 and a second region 112; the polygonal boss 2 includes a first boss and a second boss; the first region 111 and the second region 112 are respectively provided with a first boss and a second boss, and an identifier 3 is provided in the first region 111 and / or the second region 112.

[0064] In this embodiment, in the first segment 11, the first protrusion in the first region 111 away from the second segment 12 is a triangular protrusion, and the second protrusion in the second region 112 closer to the second segment 12 is a trapezoidal protrusion. At the same time, different scanning rods can be identified according to the number and shape of the polygonal protrusions 2. For example, scanning rod A is provided with one polygonal protrusion 2, and scanning rod B is provided with two polygonal protrusions 2, or scanning rod A is provided with one circular protrusion and one triangular protrusion, and scanning rod B is provided with one triangular protrusion and one square protrusion. This can effectively identify the scanning rods from multiple aspects.

[0065] The polygonal protrusions 2 on each scanning rod include, but are not limited to:

[0066] (1) The number of polygonal protrusions 2 in each first segment rod 11 is different;

[0067] (2) The polygonal bosses 2 of each first segment rod 11 have different shapes;

[0068] In one embodiment, the first segment 11 includes a first region 111 and a second region 112;

[0069] The first segment 11 is provided with a polygonal boss 2, which covers the first region 111 and the second region 112.

[0070] Alternatively, the polygonal boss 2 may be disposed within the first region 111 or the second region 112;

[0071] An identifier 3 is provided in the first region 111 and / or the second region 112.

[0072] In this embodiment, the polygonal boss 2 covers the first region 111 and the second region 112, which can provide a larger recognition surface, support more complex coding combinations, reduce structural splicing, and improve the consistency of manufacturing and installation. The polygonal boss 2 is set in the first region 111 or the second region 112, which can refine the coding design, improve the resolution, and avoid the impact of structural interference on the oral cavity scanning path. The recognition body 3 is set in the first region 111 and / or the second region 112, which can support multi-dimensional coding combinations (position, quantity and shape).

[0073] In one embodiment, the polygonal boss 2 is provided with at least one dividing groove, which divides the identification surface of the polygonal boss 2.

[0074] In this embodiment, the division of the polygonal protrusion 2 by the dividing groove can enhance the reliability of the code recognition, improve the optical scanning recognition, support the combination design of multiple recognition bodies 3, and facilitate the expansion of the code.

[0075] In one embodiment, the triangular and trapezoidal bosses are integrated into a single structure, effectively preventing loosening, misalignment, or damage caused by splicing and fitting in separate structures. The continuous, seamless overall structure enhances load-bearing capacity and resistance to deformation, making it suitable for clinical applications involving frequent manipulation, insertion / removal, and intraoral scanning collisions. The integrated structure facilitates one-time molding using processes such as injection molding, integrated machining, and 3D printing, avoiding complex steps like alignment, bonding, and fastening in subsequent assembly processes. This significantly improves manufacturing efficiency and consistency, reducing costs and human assembly errors. The identification element is attached to the triangular and trapezoidal bosses; in the integrated structure, their spatial relationship is absolutely fixed and precise, avoiding positional shifts caused by thermal expansion and contraction, material deformation, or assembly errors in separate structures. This ensures consistency of positional data during each scan, improving the accuracy of identification and positioning.

[0076] In another embodiment, the triangular boss and the trapezoidal boss are separately provided, that is, there is a gap between the triangular boss and the trapezoidal boss.

[0077] In this embodiment, the identifier 3 can be located in any region. For example, two identifiers 3 can be set in the first region 111, and no identifiers 3 can be set in the second region 112; or different numbers of identifiers 3 can be set in both regions. By further dividing the first segment 11 into the first region 111 and the second region 112, and setting polygonal protrusions 2 and identifiers 3 in different regions, various combinations of identifiers 3 in spatial position can be realized, which facilitates the formation of multiple different coding types and enhances the uniqueness and compatibility of the scanning rod's identification.

[0078] In one embodiment, the widths at both ends of the first segment 11 and the third segment 13 are greater than those of the second segment 12, such as... Figure 1 As shown, along the F direction, the dimensions of the widest parts of the first segment 11, the second segment 12, and the third segment 13 in the figure are the widths of the first segment 11, the second segment 12, and the third segment 13, respectively.

[0079] In this embodiment, the scanning rod is designed as a dumbbell shape. The narrower structure of the second segment 12 facilitates insertion between teeth or dental implants 6, ensuring visual transparency and stability. The widths of the first and third segments 11 and 13 are greater than the width of the middle second segment 12, which allows for a design that is thinner in the middle and slightly larger at both ends. This effectively reduces tissue obstruction within the oral cavity, improving scanning efficiency while maintaining recognition accuracy and reducing data interference.

[0080] In one embodiment, the third section of the rod 13 is provided with a fixing member 4 on the side opposite to the polygonal boss 2, and the rod 1 is installed on the external implant through the fixing member 4.

[0081] In this embodiment, a spiral insertion hole is provided at the end of the third segment 13 for screwing into an external mounting bracket. During installation, the doctor can adjust the insertion angle according to the scanning position and then tighten and lock it in place. A fixing member 4 is provided on the opposite side of the third segment 13 and the polygonal boss 2, which facilitates the installation of the scanning rod into the implant or other fixed parts, improving the convenience and stability of installation, while allowing for fine-tuning of the angle, which helps to achieve the convergence and arrangement of the heads.

[0082] Embodiment 2 of the scanning bar of this application

[0083] In this embodiment, the identifier 3 is detachably mounted on the polygonal boss 2. It can be connected via magnetic or threaded connections. This detachable structure allows the identifier 3 to quickly change its coding pattern (e.g., quantity, arrangement, shape) as needed, thus assigning a unique identifier to the scanning rod. Doctors can flexibly configure the scanning rod's identification information according to different surgical needs, patient oral structure, or scanning sequence, improving system compatibility and adaptability. The identifier and the scanning rod body can be manufactured independently. If the identifier is damaged, worn, or requires coding replacement, the entire scanning rod does not need to be replaced; only the identifier component needs to be replaced, effectively reducing material waste and usage costs, and improving economic efficiency. Identifiers can be pre-set in batches and stored in categories. For example, a hospital can establish a standard identifier library, categorized and numbered by length, size, or function. In practical applications, simply selecting the identifier with the corresponding number and inserting it completes rapid configuration, improving clinical setup efficiency and assembly speed.

[0084] In another embodiment, the identification body 3 is configured as an integrally formed structure with the polygonal boss 2.

[0085] In this embodiment, the identifier 3 can be formed on the polygonal boss 2 by means of laser etching, molding, or injection molding, ensuring that its structure is clear, stable and invariable, resistant to corrosion in the oral cavity environment, and suitable for mass precision manufacturing, thereby improving the reliability and production consistency of the identifier 3. For example, a coding indentation with a depth of 0.3 mm and a diameter of 1 mm can be formed on the surface of the polygonal boss 2 using laser engraving technology, which can be accurately identified by the scanning head 5's recognition algorithm without affecting the strength of the rod 1.

[0086] In one embodiment, the first rod segment 11, the second rod segment 12, and the third rod segment 13 are integrally formed.

[0087] The scanning pole is manufactured in one piece using injection molding, avoiding multi-segment splicing. The seamless design ensures high strength and facilitates sterilization and reuse. The three-section pole body 1 utilizes a one-piece molding design, reducing connection points, increasing overall structural strength, and preventing loosening or detachment from affecting accuracy or lifespan. This design is suitable for standardized mass production of medical devices.

[0088] Example 1 of the scanning system in this application

[0089] like Figure 2 As shown, this application provides a scanning system, which includes: a scanning head 5, a dental implant 6, and at least one scanning bar;

[0090] The scanning bar is mounted on the dental implant 6 or multiple scanning bars are mounted on the dental implant 6 at intervals, and the scanning head 5 scans at least one first segment bar 11.

[0091] Before orthodontic treatment, the dentist selects multiple scanning rods, such as four of different lengths, based on the size of the patient's dental implant 6, and installs them at intervals on the inside of the maxillary dental implant 6. A single transverse scan by the scanning head 5 acquires the positional information of all scanning rods, automatically constructing a virtual model. By installing at least one scanning rod on the dental implant 6 or arranging multiple scanning rods at intervals, and scanning the first segment 11 of the rod with the scanning head 5, comprehensive acquisition of the identification body 3 and its position is achieved, providing accurate reference for subsequent 3D modeling and surgical navigation.

[0092] In one embodiment, the first scanning bar is provided with at least two recognition objects 3, and the recognition objects 3 on the second scanning bar are moved at least one recognition object 3 position relative to the recognition objects 3 on the first scanning bar or the number of recognition objects is increased or decreased.

[0093] In this embodiment, the coding differences between scanning rods are enhanced to ensure unique identification. Different scanning rods are differentiated by varying the number or position of the identification elements 3. Even if the identification elements 3 have the same shape, uniqueness can still be established through differences in position or quantity, preventing identification confusion and improving the system's recognition accuracy and fault tolerance. The coding strategy is simple, easy to implement in hardware, and supports exponential expansion, significantly increasing the system's recognition capacity. Because the identification elements 3 can be adjusted by changing their position or number, there is no need to change the entire scanning rod structure. It is suitable for reusable or detachable identification element structures, enabling low-cost and rapid configuration, which is beneficial for production and inventory management. For example, depending on the size of the scanning area or the doctor's needs, different lengths of scanning rods can be arranged; configuration can be completed simply by adjusting the position or number of identification elements 3. This achieves a highly adaptable personalized recognition method for different patients' individual oral structures, improving operational efficiency and data accuracy.

[0094] For example, the first scanning bar has two identifiers 3, located at points A and C; the second scanning bar has two identifiers 3, located at points B and C.

[0095] Alternatively, the first scanning bar may have two identification elements 3, and the second scanning bar may have one or three identification elements 3.

[0096] In one embodiment, different code combinations correspond to scanning rods of different lengths;

[0097] Alternatively, different combinations of the codes may correspond to scanning rods of the same length but different IDs.

[0098] In this embodiment, for example, code combination A corresponds to a 25mm scanning rod, and code combination B corresponds to a 30mm scanning rod. The oral scanning system can directly label the rod as a short rod or a long rod in the software based on the scanned code combination, automatically participating in modeling and registration. By establishing a one-to-one correspondence between the code and the scanning rod length, the system can automatically infer the corresponding length when identifying the code combination, eliminating the need for additional manual recording and improving data entry efficiency and management automation. For example, code combination A corresponds to a 25mm scanning rod, and code combination B is also a 25mm scanning rod, but the IDs of code combination A and code combination B are unique in the system. Different code combinations can be used to identify scanning rods of the same length but with different IDs.

[0099] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A scanning rod, characterized in that, include: The rod body comprises a first rod section, a second rod section, and a third rod section connected in sequence; The first segment of the rod has at least one polygonal protrusion on one side, and the top of the polygonal protrusion has at least one identification body for scanning by an external scanning head; The identification element on the first segment of the rod has a unique corresponding code combination; The coding combination includes the number and shape of the identifiers, the placement of the identifiers on the first segment of the rod, or a combination of the three: Alternatively, the first segment of the rod may include a first region and a second region, and the coding combination may include the number, shape, placement, or a combination of the three of the identifiers in the first region and the second region.

2. The scanning rod according to claim 1, characterized in that, The polygonal boss includes a first boss and a second boss. The first region and the second region are respectively provided with the first boss and the second boss, and the identification body is provided in the first region and / or the second region.

3. The scanning rod according to claim 1, characterized in that, The first segment of the rod is provided with a polygonal boss, which covers the first region and the second region; Or a polygonal boss may be disposed in the first region or the second region; The identification device is provided in the first region and / or the second region.

4. The scanning rod according to claim 1, characterized in that, The polygonal protrusion is provided with at least one dividing groove, which divides the identification surface of the polygonal protrusion.

5. The scanning rod according to claim 1, characterized in that, The widths at both ends of the first and third rod segments are greater than those of the second rod segment.

6. The scanning rod according to claim 1, characterized in that, The third section of the rod is provided with a fixing member on the side opposite to the polygonal boss, and the rod is installed on the external implant through the fixing member.

7. The scanning rod according to any one of claims 1-6, characterized in that, The identification element can be detachably installed on the polygonal boss or configured as an integral structure with the polygonal boss.

8. The scanning rod according to any one of claims 1-6, characterized in that, The first segment, the second segment, and the third segment are integrally formed.

9. A scanning system, characterized in that, include: A scanning head, a dental implant, and at least two scanning rods as described in any one of claims 1 to 8; The scanning bar is mounted on the dental arch implant, and multiple scanning bars are mounted on the dental arch implant at intervals. The scanning head scans at least one of the first bar segments.

10. The scanning system according to claim 9, characterized in that, The first scanning bar is provided with at least two of the identification objects, and the identification objects on the second scanning bar are moved at least one identification object position relative to the identification objects on the first scanning bar, or the number of identification objects is increased or decreased.

11. The scanning system according to claim 9, characterized in that, Different combinations of the codes correspond to scanning rods of different lengths; Alternatively, different combinations of the codes may correspond to scanning rods of the same length but different IDs.

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