A feature scanning bar, kit and oral scanning system

Abstract

The application provides a feature scanning rod, a kit and an oral scanning system. The feature scanning rod comprises a connecting piece, an identification body and one or more extended identification flanges; the connecting piece is used for connecting with an implant or an abutment; the identification body is connected with the connecting piece, and the identification body has opposite first and second side surfaces; the extended identification flanges are arranged on the first and / or second side surfaces; wherein the identification body and / or the extended identification flanges are provided with feature identification elements. In the application, the feature scanning rod with a special structure is designed, so that each feature scanning rod can form unique feature information, the above feature information can be used for accurately splicing multiple single-frame images when intraoral scanning is performed, a high-precision oral three-dimensional model is generated, a high-precision denture manufactured according to the oral three-dimensional model can be perfectly matched with the implant, the success rate of implantation is ensured, and the comfort of the patient is improved.

Description

Technical Field

[0001] This application relates to the field of dental implant technology, and in particular to a feature scanning rod, kit, and dental scanning system. Background Technology

[0002] In the field of dental implantology, different scanning rods are installed on each implant. Then, multiple single-frame images are scanned and reconstructed using an oral scanner to generate a three-dimensional oral model including the scanning rods. The position and angle of the implant are determined based on the three-dimensional oral model including the scanning rods, and then the prosthesis is made according to the position and angle of the implant.

[0003] Therefore, the structure of the scanning rod plays a crucial role in accurate scanning. However, the accuracy of obtaining a three-dimensional oral model including the scanning rod based on the existing scanning rod structure is low, resulting in poor denture design and affecting patient comfort. Summary of the Invention

[0004] The purpose of this application is to provide a feature scanning rod, a feature scanning rod kit, and an oral scanning system that can improve the accuracy of the three-dimensional oral model formed after stitching.

[0005] The embodiments of this application are implemented as follows:

[0006] In a first aspect, this application provides a feature scanning rod, including a connector, an identification body, and one or more extended identification flanges; the connector is used to connect with an implant or abutment; the identification body is connected to the connector, and the identification body has a first side and a second side opposite to each other; the extended identification flange is disposed on the first side and / or the second side; wherein, the identification body and / or the extended identification flange are provided with feature identification elements.

[0007] Secondly, this application provides a feature scanning bar kit, including multiple feature scanning bars as described above, wherein the feature parameters of the extended recognition flanges on each feature scanning bar are not completely the same; and / or, the feature recognition elements on each feature scanning bar are not completely the same; and / or, the feature parameters of the recognition bodies of each feature scanning bar are not completely the same.

[0008] The feature parameters include at least one of length, width, height, angle, and radian.

[0009] Thirdly, this application provides an oral cavity scanning system, including: an oral cavity scanner and one or more of the above-mentioned feature scanning rods.

[0010] The advantages of this application compared to the prior art are:

[0011] The feature scanning rod of this application includes a connector, an identification body, and one or more extended identification flanges. The connector is used to connect with the implant or abutment, and the identification body is connected to the connector. The identification body has opposing first and second side surfaces. The extended identification flanges are disposed on the first and / or second side surfaces, and feature identification elements are provided on the identification body and / or the extended identification flanges. The extended identification flanges and / or feature identification elements can form unique feature information for each feature scanning rod, thereby enabling accurate stitching of multiple single-frame images based on the feature information of the feature scanning rod during intraoral scanning to generate a high-precision three-dimensional oral model. This allows the high-precision prosthesis manufactured based on the three-dimensional oral model to perfectly match the implant, ensuring the success rate of implantation while improving patient comfort. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This application illustrates the structure of the feature scanning rod. Figure 1 ;

[0014] Figure 2 for Figure 1 Top view of the feature scanning bar;

[0015] Figure 3 For along Figure 2 A schematic diagram of the cross-section formed after cutting the feature scanning rod in the middle BB direction;

[0016] Figure 4 This application illustrates the structure of the feature scanning rod. Figure 2 ;

[0017] Figure 5 for Figure 4 A top view of the feature scanning bar in the image;

[0018] Figure 6 This application illustrates the structure of the feature scanning rod. Figure 3 ;

[0019] Figure 7 for Figure 6 A top view of the feature scanning bar in the image;

[0020] Figure 8 This application illustrates the structure of the feature scanning rod. Figure 4 ;

[0021] Figure 9 for Figure 8 A top view of the feature scanning bar in the image;

[0022] Figure 10 This application illustrates the structure of the feature scanning rod. Figure 5 ;

[0023] Figure 11 for Figure 10 A top view of the feature scanning bar in the image;

[0024] Figure 12 This application illustrates the structure of the feature scanning rod. Figure 6 ;

[0025] Figure 13 for Figure 12 A top view of the feature scanning bar in the image;

[0026] Figure 14 This application illustrates the structure of the feature scanning rod. Figure 7 ;

[0027] Figure 15 for Figure 14 A top view of the feature scanning bar in the image;

[0028] Figure 16 This application illustrates the structure of the feature scanning rod. Figure 8 ;

[0029] Figure 17 for Figure 16 A top view of the feature scanning bar in the image;

[0030] Figure 18 This application illustrates the structure of the feature scanning rod. Figure 9 ;

[0031] Figure 19 for Figure 18 A top view of the feature scanning bar in the image;

[0032] Figure 20 This application illustrates the structure of the feature scanning rod. Figure 10 ;

[0033] Figure 21 This application illustrates the structure of the feature scanning rod. Figure 10 one;

[0034] Figure 22 This is a schematic diagram of the structure of the fastener shown in this application;

[0035] Figure 23 This is a schematic diagram of the feature scanning rod kit shown in this application.

[0036] Figure label:

[0037] 1-Feature scanning rod; 2-Fixing component; 11-Connector; 12-Identification body; 13-Extended identification flange; 21-Fixing threaded part; 22-Anti-detachment threaded part; 121-First side; 122-Second side; 123-First end; 124-Second end; 125-Second protrusion; 126-First through groove; 127-Auxiliary cut; 128-Third protrusion; 129-Second through groove; 131-First identification body; 1241-Connecting through hole; 1242-Anti-detachment part; 1251-Support rod protrusion. Detailed Implementation

[0038] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0039] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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 application.

[0041] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0042] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0043] Before describing the feature scanning bar 1 of this application, some terms will be defined. For example... Figures 1-19As shown, a Cartesian coordinate system is defined, including the X-axis, Y-axis, and Z-axis. In the following embodiments, the axial axis of the identification body 12 is the axis along the X-axis direction, and the transverse axis of the identification body 12 is the axis along the Y-axis direction. In the following embodiments, the length refers to the dimension parameter of the feature scanning rod 1 in the X-axis direction, the width refers to the dimension parameter of the feature scanning rod 1 in the Y-axis direction, and the height refers to the dimension parameter of the feature scanning rod 1 in the Z-axis direction. The groove depth refers to the dimension parameter of the groove in the Z-axis direction, and the cutting depth refers to the dimension parameter of the cut in the Z-axis direction.

[0044] In some embodiments, this application provides a feature scanning rod 1, such as Figure 1 and Figure 2 As shown, the feature scanning lever 1 includes a connector 11, an identification body 12, and one or more extended identification flanges 13; the connector 11 is used to connect with an implant or abutment; the identification body 12 is connected to the connector 11, and the identification body 12 has opposing first side 121 and second side 122; the extended identification flange 13 is disposed on the first side 121 and / or the second side 122; wherein, the identification body 12 and / or the extended identification flange 13 are provided with feature identification elements. Multiple feature scanning levers 1 can be combined to form a feature scanning lever kit. This application also provides an oral scanning system, which includes an oral scanner and one or more of the above-described feature scanning levers 1.

[0045] The feature scanning rod kit may include 2, 3, 4, 5, 9, 10, or 11 feature scanning rods 1. The feature parameters of the extended recognition flanges 13 on each feature scanning rod 1 are not completely the same; and / or, the feature recognition elements on each feature scanning rod 1 are not completely the same; wherein, the feature parameters include at least one of length, width, height, angle, and radianity.

[0046] In a single-tooth implant scenario, the dentist can use one feature scanning rod 1 and an oral scanner. In a multi-tooth implant scenario or in the case of edentulous patients, the dentist can use multiple feature scanning rod 1s and oral scanners, such as a feature scanning rod kit.

[0047] During dental implantation, implants are placed into the patient's jaw. The feature scanning rod 1 can be directly installed on the implant, or an abutment can be installed on the implant first, followed by the feature scanning rod 1 on the abutment. Each implant requires one feature scanning rod 1, meaning the number of feature scanning rods 1 equals the number of implants, and at least one feature scanning rod 1 must be installed inside the patient's mouth. After installation, a 3D oral scanner (intraoral or extraoral) can be used to scan the oral cavity and generate a 3D model including the feature scanning rod 1. During the scan, multiple single-frame images are obtained. Because the extended identification flange 13 and / or feature identification elements on each feature scanning rod 1 form unique feature information, this information can be used as a marker when stitching together multiple single-frame images to generate a 3D oral model. It can also serve as identification information to recognize the feature scanning rod 1 and retrieve the corresponding model from the model library. The position and angle of the implant are determined based on a 3D model of the oral cavity, and a prosthesis is fabricated according to the determined position and angle of the implant. After the prosthesis is fabricated, it is installed on the implant to complete the entire dental implant procedure.

[0048] In some embodiments, the extended identification flange 13 can independently constitute the feature information of the feature scanning rod 1, as described in detail below:

[0049] (1) The setting position of the extended identification flange 13 can constitute the feature information of each feature scanning rod 1. For example, in the feature scanning rod kit, the first feature scanning rod 1 is provided with an extended identification flange 13 only on the first side 121 of the identification body 12, the second feature scanning rod 1 is provided with an extended identification flange 13 only on the second side 122 of the identification body 12, and the third feature scanning rod 1 is provided with an extended identification flange 13 on both the first side 121 and the second side 122 of the identification body 12. At this time, since the setting position of the extended identification flange 13 on each feature scanning rod 1 is different, the setting position of the extended identification flange 13 in each feature scanning rod 1 constitutes its unique feature information.

[0050] (2) The number of extended identification flanges 13 can constitute the feature information of each feature scanning rod 1. For example, in the feature scanning rod kit, the number of extended identification flanges 13 on each feature scanning rod 1 is different, so the number of extended identification flanges 13 in each feature scanning rod 1 constitutes its unique feature information.

[0051] (3) The feature parameters of the extended identification flange 13 can constitute the feature information of each feature scanning rod 1. Among them, the feature parameters include at least one of length, width, height, angle and arc. For example, in the feature scanning rod kit, the feature parameters of the extended identification flange 13 of each feature scanning rod 1 are different, then the feature parameters of the extended identification flange 13 constitute the unique feature information of each feature scanning rod 1.

[0052] In the feature scanning rod kit, the feature parameters of the extended identification flanges 13 of each feature scanning rod 1 being different may include: any one of the length, width, height, angle, and curvature of each extended identification flange 13 being different; or any two or all of the length, width, height, angle, and curvature of each extended identification flange 13 being different. In some embodiments, the fact that the feature parameters of the extended identification flanges 13 of each feature scanning rod 1 are different also includes that one or two of the height, length, and width of some extended identification flanges 13 are the same. However, in this case, it must be ensured that there are no extended identification flanges 13 with completely identical length, width, and height. Only in this way can the feature parameters of the extended identification flanges 13 form the feature information of each feature scanning rod 1. For example, the length of the extended identification flange 13 in the first feature scanning rod 1 is 25mm and the width is 2mm, the length of the extended identification flange 13 in the second feature scanning rod 1 is 25mm and the width is 1.5mm, and the length of the extended identification flange 13 in the third feature scanning rod 1 is 27mm and the width is 1.3mm. At this time, the length and width information of the extended identification flange 13 can also constitute the feature information of the feature scanning rod 1.

[0053] In some embodiments, when each feature scan has multiple extended identification flanges 13 in the feature scan rod kit, the feature parameters of each extended identification flange 13 in a single feature scan rod 1 are the same, but the feature parameters of each extended identification flange 13 in each feature scan rod 1 in the feature scan rod kit are different, which can also form the feature parameters of the feature scan rod 1. For example, the length of each extended identification flange 13 in the first feature scan rod 1 is 22mm and the width is 2.3mm; the length of each extended identification flange 13 in the second feature scan rod 1 is 23mm and the width is 2mm; the length of each extended identification flange 13 in the third feature scan rod 1 is 24mm and the width is 1.5mm, which can also form the feature information of the feature scan rod 1.

[0054] (4) The shape information of the extended identification flange 13 can constitute the feature information of each feature scanning rod 1. For example, the shape of the extended identification flange 13 on each feature scanning rod 1 in the feature scanning rod kit is different, so the shape information of the extended identification flange 13 in each feature scanning rod 1 constitutes its unique feature information.

[0055] In some embodiments, the shapes of each extended identification flange 13 within a single feature scanning rod 1 can be identical. However, when the shapes of the extended identification flanges 13 within each feature scanning rod 1 in the feature scanning rod kit are different, the shape information of the extended identification flanges 13 can also form the feature information of the feature scanning rod 1. For example, the shapes of the extended identification flanges 13 within the first feature scanning rod 1 are all cylindrical, the shapes of the extended identification flanges 13 within the second feature scanning rod 1 are all hexagonal prisms, and the shapes of the extended identification flanges 13 within the third feature scanning rod 1 are all cuboids. In this case, the shapes of the extended identification flanges 13 can also form the feature information of the feature scanning rod 1.

[0056] In some embodiments, feature recognition elements can also constitute the feature information of feature scanning rod 1, as explained below:

[0057] (1) The setting position of the feature recognition element can constitute the feature information of each feature scanning rod 1. For example, in the feature scanning rod kit, the recognition body 12 of the first feature scanning rod 1 is provided with a feature recognition element, the extended recognition flange 13 of the second feature scanning rod 1 is provided with a feature recognition element, and the extended recognition flange 13 and the recognition body 12 of the third feature scanning rod 1 are both provided with feature recognition elements. Since the setting position of the feature recognition element on each feature scanning rod 1 is different, the setting position of the feature recognition element in each feature scanning rod 1 constitutes its unique feature information.

[0058] (2) The number of feature recognition elements can constitute the feature information of each feature scanning bar 1. For example, if the number of feature recognition elements on each feature scanning bar 1 is different, then the number of feature recognition elements set in each feature scanning bar 1 constitutes its unique feature information.

[0059] (3) The setting type of feature recognition elements can constitute the feature information of each feature scanning rod 1. For example, the feature recognition elements may include at least one of protrusions, grooves, non-coded markers and coded markers. Each of them can be regarded as a type of feature recognition element. Each feature scanning rod 1 is provided with different types of feature recognition elements. For example, a feature scanning rod 1 is provided with a protrusion, a feature scanning rod 1 is provided with a groove, a feature scanning rod 1 is provided with a coded marker, and a feature scanning rod 1 is provided with both a protrusion and a groove. In this case, since each feature scanning rod 1 is provided with different types of feature recognition elements, the feature recognition elements constitute the unique feature information of each feature scanning rod 1.

[0060] (4) The shape information of the feature recognition elements can constitute the feature information of each feature scanning rod 1. For example, if the shape of the feature recognition elements on each feature scanning rod 1 is different, then the shape information of the feature recognition elements in each feature scanning rod 1 constitutes its unique feature information. Specific shapes such as one-dimensional codes and two-dimensional codes can be formed by multiple protrusions and grooves to constitute the feature information of each feature scanning rod 1.

[0061] In this application, the extended identification flange 13 and the feature identification elements can be combined to constitute the feature information of each feature scanning rod 1. At this time, the extended identification flanges 13 on each feature scanning rod 1 in the feature scanning rod kit may not be completely identical, and the feature identification elements on each feature scanning rod 1 may also not be completely identical. It should be noted that "not completely identical" includes both completely different and partially different cases. When the relevant features of the extended identification flanges 13 of some feature scanning rods 1 are the same, and the relevant features of the feature identification elements of some feature scanning rods 1 are the same, the feature scanning rod kit must ensure that there are no feature scanning rods 1 with completely identical extended identification flanges 13 and feature identification elements, thus constituting the feature information of the feature scanning rod 1.

[0062] This embodiment adds an extended identification flange 13 and sets feature identification elements on the identification body 12 and / or the extended identification flange 13. This not only expands the scanning area of ​​the feature scanning rod 1 but also increases the feature information of the feature scanning rod 1. If the feature information is formed in the above manner, each feature scanning rod 1 exhibits a clear distinction, enabling faster identification of each feature scanning rod 1 during intraoral scanning, and quickly and accurately completing the identification of the feature scanning rod 1. Simultaneously, after identification, because the feature scanning rod 1 exhibits clear distinction, multiple single-frame images can be stitched together quickly and accurately based on the feature information of the feature scanning rod 1, reducing the cumulative error of the obtained oral 3D model and generating a high-precision oral 3D model, thus improving the accuracy and efficiency of intraoral scanning during implantation. Furthermore, because this embodiment can improve the accuracy of the obtained oral 3D model, it is possible to design and manufacture high-precision prostheses that perfectly match the implants, ensuring implant success rates while improving patient comfort.

[0063] Furthermore, a standard library can be established in advance, storing standard models corresponding to various models of the feature scanning rod 1, or standard models of other scanning rod models from other systems compatible with each model of feature scanning rod 1. In this application, because each feature scanning rod 1 is clearly distinguishable, identification can be completed when some features of the feature scanning rod 1 are scanned during intraoral scanning. The corresponding complete standard model can then be accurately and quickly retrieved from the standard library. The retrieved standard model is then processed (replaced, spliced, or merged) with the actual model reconstructed from the scan, thereby quickly obtaining a more accurate target 3D model, resulting in higher scanning efficiency, shorter scanning time, and reduced patient discomfort. Based on the target 3D model, the position and angle information of the feature scanning rod 1, as well as the position and angle information of the implant or abutment, can be determined. The crowns and bridges designed based on this information better meet the needs of patients.

[0064] In addition, since each feature scanning rod 1 is clearly distinguishable in this embodiment, the identity of the feature scanning rod 1 can be determined by scanning one frame or fewer frames during the scanning process, resulting in higher identity recognition efficiency.

[0065] In some embodiments, the feature recognition elements can be centrally located, which facilitates the identification of the scanning rod by scanning a concentrated area. For example, the recognition body 12 has a first end 123 and a second end 124. The connector 11 is connected to the recognition body 12 through the second end 124. The feature parameters of the first end 123 of each feature scanning rod 1 are different. Therefore, the structural design or dimensional parameters of the first end 123 of each feature scanning rod 1 are significantly different, so that the dental scanner can identify the feature scanning rod 1 through the first end 123 during scanning.

[0066] During oral scanning, the feature scanning rod 1 is installed inside the patient's mouth. Medical staff can position the first end 123 inside the patient's mouth and bring all the first ends 123 of the feature scanning rod 1 together. Medical staff only need to scan the first ends 123 of all the feature scanning rod 1. Based on the features of the first end 123 included in one or fewer frames of the scanned image, the structure of the first end 123 can be reconstructed from this frame or fewer frames, thus identifying the feature scanning rod 1. This facilitates quick matching with the standard complete model of the feature scanning rod 1 in the standard library, resulting in higher scanning efficiency.

[0067] Optionally, one or more extended identification flanges 13 may be located at the bottom of the first side surface 121 and / or the second side surface 122, or one or more extended identification flanges 13 may be located at the middle of the first side surface 121 and / or the second side surface 122; the height of each extended identification flange 13 is less than the height of the identification body 12. This creates a height difference between the extended identification flanges 13 and the top surface of the identification body 12, forming a stepped structure, making the features of the feature scanning rod 1 more prominent and facilitating scanning by the intraoral scanner. In some embodiments, each extended identification flange 13 may also be located at the top of the first side surface 121 and / or the second side surface 122.

[0068] like Figure 1 and Figure 2 As shown, two extended recognition flanges 13 are provided, and the two extended recognition flanges 13 are located at the bottom of the first side 121 and the second side 122. Therefore, the bottom surface of the extended recognition flange 13 and the bottom surface of the recognition body 12 are located on the same plane. During the scanning process, the bottom surface of the recognition body 12 can be quickly determined, accelerating the scanning efficiency. Specifically, the closer the bottom surface of the extended recognition flange 13 is to the bottom surface of the connector 11, the more significant the height difference between the extended recognition flange 13 and the recognition body 12, resulting in smaller cumulative errors during image stitching, better constraint, and higher accuracy.

[0069] Optionally, the length of the extended identification flange 13 may be less than the length of the identification body 12. In one embodiment, one or more extended identification flanges 13 may be provided on the same side of the identification body 12. On the same side of the identification body 12, multiple extended identification flanges 13 are distributed at intervals along the axial axis (X-axis) of the identification body 12 to form a row of extended identification flanges 13 structures.

[0070] Optionally, multiple rows of extending identification flanges 13 are formed on the same side of the identification body 12 along the height direction of the identification body 12. The spacing between two adjacent extending identification flanges 13 in each row can be the same or different. Alternatively, each row of extending identification flanges 13 may have only one extending identification flange 13, and the orthographic projections of the extending identification flanges 13 in the height direction of the identification body 12 may overlap or not overlap at all, thereby achieving a staggered arrangement of the extending identification flanges 13 in the height direction of the identification body 12.

[0071] Optionally, the length of the extended identification flange 13 can be equal to the length of the identification body 12. That is, when the identification body 12 has a first end 123 and a second end 124, the extended identification flange 13 extends from the first end 123 to the second end 124. In this case, there can be one extended identification flange 13, or there can be multiple extended identification flanges 13. The multiple extended identification flanges 13 are distributed at intervals along the height direction of the identification body 12, and the interval between two adjacent extended identification flanges 13 can be the same or different.

[0072] Optionally, the width at both ends of each extended identification flange 13 is smaller than the width at the middle of the extended identification flange 13. This setting allows the extended identification flange 13 to present a gradually tapered structure with pointed ends and a wider middle section, which enhances its aesthetic appeal. Furthermore, the angle at the ends of the tapered structure and the length of the wider middle section can serve as feature information for the identification of the feature scanning rod 1, accelerating scanning efficiency and improving accuracy. Simultaneously, this method avoids mutual interference when installed in narrow environments within multiple feature scanning rod openings, allowing for a smooth transition of the entire extended identification flange 13 and mitigating the risk of soft tissue damage to doctors and patients caused by the sharp structure of the extended identification flange 13. Each extended identification flange 13 can be provided with rounded corners or chamfers, which can also serve as feature information for the identification of the feature scanning rod 1.

[0073] Optionally, one or more feature scanning rods 1 may have two extended identification flanges 13, which are located on the first side 121 and the second side 122 respectively, and are symmetrically arranged with respect to the axial axis (X-axis) of the identification body 12.

[0074] Optionally, the extended identification flange 13 and the identification body 12 can be integral or detachably connected. Detachable connection can be achieved through a sliding groove, a snap-fit, or other means.

[0075] The extended identification flange 13 in this application has multiple implementation methods. In some embodiments, the above implementation methods can be used individually or in combination. For example, the extended identification flange 13 on the two sides of the identification body 12 can have different implementation methods. This makes the feature information of the feature scanning rod 1 more diverse, makes the features of each feature scanning rod 1 more obvious, improves the efficiency and accuracy of feature scanning rod 1 identification during the scanning process, and improves the image stitching accuracy and stitching efficiency.

[0076] Optionally, the connector 11 and the recognition body 12 can be integral or detachably connected. Detachable connection can be achieved through a sliding groove, snap-fit, or other means. Optionally, the angle between the axis of the connector 11 and the axis of the recognition body 12 is 70~100°. The angle between the axis of the connector 11 and the axis of the recognition body 12 can be 100°, 95°, 90°, 85°, 80°, 75°, or 70°. When the angle is 90°, the connector 11 and the recognition body 12 are perpendicular, and the axis of the connector 11 is parallel to the Z-axis. When the angle is any other angle, the connector 11 is tilted relative to the recognition body 12. For example, when the angle is obtuse, the feature scanning rod 1 can be installed inside the mouth to avoid pressing on the tongue; when the angle is acute, when the implant or abutment is tilted (biased outwards), the recognition body 12 can be positioned at an angle conducive to intraoral scanning when the feature scanning rod 1 is installed on the implant or abutment.

[0077] Optionally, rounded corners or chamfers can also be set on the identification body 12. The rounded corners or chamfers can also be used as feature information for the identification of the feature scanning rod 1, thereby improving scanning efficiency and scanning accuracy.

[0078] In some embodiments, the feature parameters of the recognition body 12 of each feature scanning bar 1 in the feature scanning bar kit are not completely identical. These feature parameters include at least one of length, width, height, angle, and radian.

[0079] The feature parameters of each feature scanning bar 1 in the feature scanning bar kit are not completely the same for the body 12, including the following situations:

[0080] (1) The feature parameters of the recognition body 12 of each feature scanning bar 1 in the feature scanning bar kit are completely different: This implementation method is the same as the implementation method where the feature parameters of the extended recognition flange 13 are completely different, and will not be described again here. In this case, the feature parameters of the recognition body 12 can be formed by combining them alone or with other features in the above embodiment 1 to form the feature information of the feature scanning bar 1.

[0081] (2) Some feature scanning rods 1 in the feature scanning rod kit have the same feature parameters as their recognition bodies 12. In this case, the length, width, and height of some feature scanning rods 1's recognition bodies 12 are the same. When the feature parameters of the recognition bodies 12 are the same, they cannot constitute the feature information of the feature scanning rod 1 on their own, and need to be combined with other features in the above embodiment 1 to form the feature information of the feature scanning rod 1. For example, such as Figures 1-19 As shown, the feature scanning rod kit contains 9 feature scanning rods 1, of which 3 feature scanning rods 1 form 1 group, and the 9 feature scanning rods 1 form 3 groups. The length, width and height of the recognition body 12 can be the same in each group of feature scanning rods 1.

[0082] In some embodiments, each feature scanning bar 1 has at least one feature recognition element, and at least one feature recognition element is disposed on the recognition body 12 and / or the extended recognition flange 13. When the feature recognition elements are disposed in the manner described above, on each feature scanning bar 1, the feature recognition elements are asymmetrically disposed about the transverse axis (Y-axis) of the recognition body 12; or, the feature recognition elements are asymmetrically disposed about the axial axis (X-axis) of the recognition body 12; or, the feature recognition elements are asymmetrically disposed about both the transverse axis (Y-axis) and the axial axis of the recognition body 12. Exemplarily, the feature recognition elements may include at least one of protrusions, grooves, non-coded markers, and coded markers. When the feature recognition elements are asymmetrically disposed about the axial axis (X-axis), in the orthographic projection obtained by projecting the feature scanning bar 1 along the height direction of the recognition body 12, different feature recognition elements are distributed on both sides of the axial axis (X-axis) of the recognition body 12, or feature recognition elements are distributed on one side of the axial axis (X-axis) of the recognition body 12, while no feature recognition elements or a small number of feature recognition elements are distributed on the other side of the axial axis (X-axis) of the recognition body 12. When the feature recognition elements are asymmetrically arranged about the horizontal axis (Y-axis), in the orthographic projection obtained by projecting the feature scanning rod 1 along the height direction of the recognition body 12, feature recognition elements are distributed on one side of the horizontal axis (Y-axis) of the recognition body 12, while no feature recognition elements or a small number of feature recognition elements are distributed on the other side of the horizontal axis (Y-axis) of the recognition body 12; or, different feature recognition elements are distributed on both sides of the horizontal axis (Y-axis) of the recognition body 12, such as a protrusion on one side of the horizontal axis (Y-axis) of the recognition body 12 and a groove on the other side; or, for example, a circular protrusion on one side of the horizontal axis (Y-axis) of the recognition body 12 and a triangular protrusion on the other side.

[0083] In existing technologies, during intraoral scanning, extraneous data such as the patient's tongue, mucosa, and the doctor's fingers can easily obstruct the feature scanning rod 1, interfering with the scanning process and affecting scanning accuracy. In this application, during intraoral scanning, the intraoral scanner scans the feature scanning rod 1 from all directions and multiple angles. At this time, when the feature recognition elements exhibit the aforementioned asymmetrical arrangement, each feature scanning rod 1 can form a more obvious distinction. Even if only some feature scanning rods 1 are scanned, their identity information can be quickly identified, thereby accurately stitching together multiple single-frame images and significantly improving scanning accuracy.

[0084] like Figure 1 , Figure 2 , Figures 4-19As shown, the feature recognition element includes a first recognition body 131, which is disposed on the top surface of the extended recognition flange 13. One or more first recognition bodies 131 may be provided. It is understood that those skilled in the art can configure the first recognition body 131 as a protrusion, groove, non-coded marker point, or coded marker point, etc.

[0085] When multiple first identification bodies 131 are provided, the multiple first identification bodies 131 can be distributed at intervals on the top surface of the extended identification flange 13 along the axial axis (X-axis) of the identification body 12.

[0086] The first identification body 131 can constitute the feature information of each feature scanning rod 1, and the specific configuration method is as follows:

[0087] (1) The setting position of the first identification body 131 can constitute the feature information of each feature scanning bar 1. For example, three feature scanning bars 1, the first identification body 131 is provided on the extended identification flange 13 of the first side 121 of the first feature scanning bar 1; the first identification body 131 is provided on the extended identification flange 13 of the second side 122 of the second feature scanning bar 1; the first identification body 131 is provided on both the first side 121 and the extended identification flange 13 of the second side 122 of the third feature scanning bar; at this time, since the setting position of the first identification body 131 on each feature scanning bar 1 is different, the setting position of the first identification body 131 in each feature scanning bar 1 constitutes its unique feature information. Alternatively, in the three feature scanning rods 1, the first identification body 131 may be located at the front end of the extended identification flange 13, the middle of the extended identification flange 13, or the rear end of the extended identification flange 13. In this case, since the setting position of the first identification body 131 on each feature scanning rod 1 is different, the setting position of the first identification body 131 in each feature scanning rod 1 also constitutes its unique feature information. In some embodiments, the setting position of the first identification body 131 in some feature scanning rods 1 of the feature scanning rod kit may be the same. In this case, although it cannot constitute the feature information of the feature scanning rod 1 on its own, it can constitute the feature information of the feature scanning rod 1 together with other features.

[0088] (2) The number of first identifiers 131 can constitute the feature information of each feature scanning bar 1. For example, if the number of first identifiers 131 on each feature scanning bar 1 is different, then the number of first identifiers 131 on each feature scanning bar 1 constitutes its unique feature information. In some embodiments, the number of first identifiers 131 on some feature scanning bars 1 in the feature scanning bar kit can be the same. In this case, although it cannot constitute the feature information of the feature scanning bar 1 on its own, it can constitute the feature information of the feature scanning bar 1 together with other features.

[0089] (3) The feature parameters of the first identification body 131 can constitute the feature information of each feature scanning rod 1. The feature parameters include at least one of length, width, height, angle, and radianity. In a feature scanning rod 1, the feature parameters of each first identification body 131 are not completely identical. This includes two situations: the feature parameters of each first identification body 131 are completely different, and the feature parameters of some first identification bodies 131 are the same. When the feature parameters of the first identification bodies 131 within each feature scanning rod 1 are distributed in the manner described above, the feature parameters of the first identification bodies 131 on each feature scanning rod 1 can be completely different, thereby enabling the feature parameters of the first identification bodies 131 to constitute the feature information of the feature scanning rod 1. The implementation method of completely different feature parameters of the first identification bodies 131 is the same as the implementation method of completely different feature parameters of the extended identification flange 13, and will not be repeated here.

[0090] In some embodiments, the feature parameters of each first identifier 131 within a single feature scanning bar 1 may be identical. However, even when the feature parameters of the first identifiers 131 within the feature scanning bar kit are different, the feature parameters of the first identifiers 131 can still form the feature information of the feature scanning bar 1. For example, the length of each first identifier 131 in the first feature scanning bar 1 is 3mm, the width is 2mm, and the height is 1mm; the length of each first identifier 131 in the second feature scanning bar 1 is 4mm, the width is 3mm, and the height is 2mm; and the length of each first identifier 131 in the third feature scanning bar 1 is 5mm, the width is 4mm, and the height is 3mm. In this case, the feature parameters of the first identifier 131 can also form the feature information of the feature scanning bar 1.

[0091] In some embodiments, when the feature parameters of the first identification body 131 in some feature scanning rods 1 of the feature scanning rod kit are the same, they cannot constitute the feature information of the feature scanning rod 1 on their own, and need to be combined with other features to constitute the feature information of the feature scanning rod 1.

[0092] (4) The shape information of the first identification body 131 can constitute the feature information of each feature scanning rod 1. For example, if the shape of the first identification body 131 on each feature scanning rod 1 is different, then the shape information of the feature identification element in each feature scanning rod 1 constitutes its unique feature information. For example, the first identification body 131 can be a cylinder, a triangular prism, a cuboid, a pentagonal prism, or a hexagonal prism.

[0093] In some embodiments, the shapes of each first identifier 131 within a single feature scanning bar 1 may be identical. However, when the shapes of the first identifiers 131 within the feature scanning bar kit are all different, the shape information of the first identifier 131 can also form the feature information of the feature scanning bar 1. For example, the shapes of the first identifiers 131 within the first feature scanning bar 1 are all cylindrical, the shapes of the first identifiers 131 within the second feature scanning bar 1 are all hexagonal prisms, and the shapes of the first identifiers 131 within the third feature scanning bar 1 are all cuboids. In this case, the shape of the first identifier 131 can also form the feature information of the feature scanning bar 1.

[0094] In some embodiments, when the shapes of the first identification bodies 131 on some feature scanning rods 1 in the feature scanning rod kit are the same, they cannot constitute the feature information of the feature scanning rod 1 on their own, but can constitute the feature information of the feature scanning rod 1 together with other features.

[0095] (5) When there are multiple first identification bodies 131, the distribution positions of the first identification bodies 131 can constitute the feature information of each feature scanning rod 1. The distribution positions of the first identification bodies 131 include: the distance between the first identification body 131 and the axis of the connector 11, the interval between two adjacent first identification bodies 131, etc. The interval between two adjacent first identification bodies 131 is used as an example below. The distance between the first identification body 131 and the axis of the connector 11 can be designed in the same way. For example, the interval between two adjacent first identification bodies 131 in each feature scanning rod 1 can be completely different, thereby constituting the feature information of each feature scanning rod 1.

[0096] In some embodiments, the interval between two adjacent first identifiers 131 within a single feature scanning bar 1 can be the same. However, even when the intervals between two adjacent first identifiers 131 within each feature scanning bar kit are different, feature information of the feature scanning bar 1 can still be formed. For example, the interval between two adjacent first identifiers 131 within the first feature scanning bar 1 is 1 mm, the interval between two adjacent first identifiers 131 within the second feature scanning bar 1 is 2 mm, and the interval between two adjacent first identifiers 131 within the third feature scanning bar 1 is 5 mm. The intervals between the first identifiers 131 can also constitute feature information for each feature scanning bar 1.

[0097] In some embodiments, the spacing between two adjacent first identifiers 131 in some feature scanning rods 1 of the feature scanning rod kit may be the same. In this case, although they cannot constitute the feature information of the feature scanning rod 1 on their own, they can constitute the feature information of the feature scanning rod 1 together with other features.

[0098] (6) At least one surface of the first identification body 131 is an inclined surface, and the inclination angle of the inclined surface constitutes the feature information of the feature scanning rod 1.

[0099] Specifically, in this method, when multiple surfaces of the first identification body 131 are inclined surfaces, the inclination angle of each inclined surface is not exactly the same. Since the bottom surface of the first identification body 131 is located on the top surface of the extended identification flange 13, at least one of the top surface and side surface of the first identification body 131 can be a first inclined surface; the aforementioned inclination angle refers to the angle between the first inclined surface and the axis of the connector 11. The inclination angle of the first inclined surface can be 10~80°, for example, it can be 80°, 75°, 70°, 65°, 60°, 55°, 50°, 45°, 40°, 35°, 30°, 25°, 20°, 19°, 17°, 16.5°, 16°, 17.5°, 18°, 15°, 13°, 12.5°, 10°, etc.

[0100] Optionally, the inclination angle of the first inclined surface in the first protrusion can be 10~60°, or 10~30°, or 10~45°.

[0101] It should be noted that "not completely identical" includes being completely different, where the tilt angles of the tilted surfaces in each first identifier 131 are completely different; "not completely identical" also includes being partially identical, where the tilt angles of some tilted surfaces in each first identifier 131 are the same. When the tilted surfaces of each first identifier 131 are presented in the above manner, within a single feature scanning rod 1, the tilt angles of the tilted surfaces in each first identifier 131 can be completely different or partially identical. Based on this, the tilt angles of the tilted surfaces of the first identifier 131 within each feature scanning rod 1 in the feature scanning rod kit are completely different. At this time, the tilt angle of the tilted surface of the first identifier 131 can independently constitute the feature information of the feature scanning rod 1.

[0102] In some embodiments, the tilt angle of the tilted surface of each first identifier 131 within a single feature scanning bar 1 may be the same, but the tilt angle of the first identifier 131 within each feature scanning bar 1 in the feature scanning bar kit may be different, which can also constitute the feature information of the feature scanning bar 1. For example, the tilt angle of the tilted surface of the first identifier 131 within the first feature scanning bar 1 is 11°; the tilt angle of the tilted surface of the first identifier 131 within the second feature scanning bar 1 is 32°; the tilt angle of the tilted surface of the first identifier 131 within the third feature scanning bar 1 is 19°; and the tilt angle of the tilted surface of the first identifier 131 within the fourth feature scanning bar 1 is 44°, which can also form the feature information of the feature scanning bar 1.

[0103] In some embodiments, the tilt angles of the tilted surfaces of the first identifiers 131 within some feature scanning rods 1 of the feature scanning rod kit are the same. In this case, although it cannot constitute the feature information of the feature scanning rod 1 on its own, it can constitute the feature information of the feature scanning rod 1 together with other features.

[0104] In some embodiments, at least one surface within the first identification body 131 can be an arc surface. In this case, the curvature of each arc surface can also be used as a feature parameter. The specific way of using it as a feature parameter is the same as the tilt angle of the inclined surface described above, except that the tilt angle of the inclined surface is replaced by the curvature of the arc surface, which will not be described again here.

[0105] In some embodiments, the multiple surfaces of the first identification body 131 may simultaneously include arc surfaces and inclined surfaces, and the feature information of the feature scanning rod 1 is formed by the angle of the inclined surface and the curvature of the arc surface.

[0106] Optionally, the first identification body 131 may also be provided with rounded corners or chamfers. The rounded corners or chamfers can also serve as feature information for the identification of the feature scanning rod 1, thereby improving scanning efficiency and scanning accuracy. For example, the connection between the first identification body 131 and the extended identification flange 13 may be provided with rounded corners or chamfers.

[0107] In some embodiments, such as Figure 20 As shown, the feature recognition element also includes a third protrusion 128, which is disposed on the top surface of the recognition body 12. One or more third protrusions 128 are provided. When multiple third protrusions 128 are provided, they can be distributed at intervals along the axial axis (X-axis) of the recognition body 12 on the top surface of the extending recognition flange 13. The way in which the third protrusion 128 constitutes feature information is basically the same as the way the first recognition body 131 constitutes feature information; the similarities will not be elaborated further here.

[0108] In some embodiments, the arrangement of the third protrusions 128 can constitute the feature information of each feature scanning rod 1. In this implementation, when there are multiple third protrusions 128, the arrangement of the third protrusions 128 in each feature scanning rod 1 is different, which can also form the feature information of the feature scanning rod 1. For example, multiple third protrusions 128 in the feature scanning rod 1 are distributed at intervals along the axial axis (X-axis) of the recognition body 12 on the top surface of the extended recognition flange 13 to form a row of third protrusions 128 structures. According to the above arrangement, multiple rows of third protrusions 128 structures are formed in the transverse axis (Y-axis) direction; however, when the number of rows of third protrusions 128 in each feature scanning rod 1 is different, different arrangement methods are formed, which can also form the feature information of the feature scanning rod 1. For another example, the third protrusions 128 are arranged in a fixed manner to form a circular or other shape. The shapes formed after the arrangement of the third protrusions 128 in each feature scanning rod 1 are different, which can also form the feature information of the feature scanning rod 1.

[0109] In some embodiments, the arrangement of the third protrusions 128 within each feature scanning bar 1 of the feature scanning bar assembly can be exactly the same, for example... Figure 20 As shown, each of the third protrusions 128 is arranged in a row at intervals along the axial direction (X-axis) of the identification body 12. The arrangement of the third protrusions 128 in each feature scanning rod 1 can also be partially the same.

[0110] Optionally, each third protrusion 128 may be provided with rounded corners or chamfers. The rounded corners or chamfers can also serve as feature information for the identification of the feature scanning rod 1, thereby improving scanning efficiency and scanning accuracy. It is understood that those skilled in the art can replace the third protrusion 128 with a groove, a non-coded marker point, or a coded marker point, etc.

[0111] In some embodiments, such as Figures 1-19 As shown, the feature recognition element includes one or more first through slots 126; the first through slots 126 are formed on the top of the recognition body 12 and penetrate the first side 121, the second side 122 and the top surface of the recognition body 12, and the first through slots 126 divide the top of the recognition body 12 into a plurality of second protrusions 125. When there are multiple first through slots 126, the first through slots 126 are distributed at intervals on the top of the recognition body 12 along the axial axis (X-axis) of the recognition body 12.

[0112] (1) The number of first through slots 126 can constitute the feature information of feature scanning rod 1.

[0113] The number of first through slots 126 in each feature scanning rod 1 is different, and the number of first through slots 126 can constitute the feature information of the feature scanning rod 1 on its own. In the feature scanning rod kit, the number of first through slots 126 in some feature scanning rods 1 may be the same, but although they cannot constitute feature information independently, they can constitute the feature information of the feature scanning rod 1 together with other features. For example, the feature scanning rod kit contains 9 feature scanning rods 1, where 3 feature scanning rods 1 form 1 group, and the 9 feature scanning rods 1 form 3 groups. Each scanning rod in the first group has three through slots, each feature scanning rod 1 in the second group has two through slots, and each feature scanning rod 1 in the third group has one through slot. For example, the number of first through slots 126 can be related to the length of the identification body 12 in the feature scanning rod 1.

[0114] (2) The characteristic parameters of the first through groove 126 can constitute the characteristic information of the feature scanning rod 1.

[0115] First, the feature parameter can be the width of the first through slot 126. The width of the first through slot 126 in a single feature scanning rod 1 can remain unchanged along the direction away from the top surface of the recognition body 12, or, as... Figure 3 As shown, the width of the first through groove 126 in a single feature scanning bar 1 can gradually increase along the direction away from the top surface of the recognition body 12. This arrangement allows the inner wall of the first through groove 126 to form a conical surface, thereby facilitating intraoral scanning and reducing the number of side scans required by the user.

[0116] In some embodiments, when a single feature scanning rod 1 has multiple first through slots 126, the widths of the multiple first through slots 126 may remain unchanged, may all gradually increase, or may be a combination of the above two forms. The maximum width of each first through slot 126 within a single feature scanning rod 1 may be completely different, or the maximum width of some first through slots 126 within a single feature scanning rod 1 may be the same. When the widths of the first through slots 126 within a single feature scanning rod 1 are presented in the above manner, the maximum widths of the first through slots 126 in each feature scanning rod 1 may all be different, and in this case, they can individually form the feature information of the feature scanning rod 1.

[0117] In some embodiments, the maximum width of each first through slot 126 in a single feature scanning rod 1 can be the same. However, even when the maximum width of the first through slot 126 in each feature scanning rod 1 of the feature scanning rod assembly is different, the feature information of the feature scanning rod 1 can still be formed. For example, the width of the first through slot 126 in the first feature scanning rod 1 is 2mm, the width of the first through slot 126 in the second feature scanning rod 1 is 1mm, and the width of the first through slot 126 in the third feature scanning rod 1 is 2.5mm, which can also form the feature information of the feature scanning rod 1.

[0118] In some embodiments, the maximum width of the first through slot 126 within some feature scanning rods 1 of the feature scanning rod kit may be the same. In this case, although it cannot constitute the feature information of the feature scanning rod 1 on its own, it can constitute the feature information of the feature scanning rod 1 together with other features. For example, three of the nine feature scanning rods 1 in the feature scanning rod kit are grouped together, and the maximum slot width of each feature scanning rod 1 in each group is the same.

[0119] In some embodiments, for ease of manufacturing, the maximum width of the first through slot 126 in each feature scanning bar 1 of the feature scanning bar kit may also be the same.

[0120] Second, the characteristic parameter can be the groove depth of the first through groove 126.

[0121] The groove depths of the first through grooves 126 within a single feature scanning rod 1 can be completely different, or the groove depths of some of the first through grooves 126 within a single feature scanning rod 1 can be the same. When the groove depths of the first through grooves 126 within a single feature scanning rod 1 are presented in the manner described above, the groove depths of the first through grooves 126 in each feature scanning rod 1 can all be different, and at this time, they can each form the feature information of the feature scanning rod 1 independently.

[0122] In some embodiments, the groove depth of each first through groove 126 in a single feature scanning rod 1 can be the same. However, even when the groove depths of the first through grooves 126 in each feature scanning rod 1 of a feature scanning rod kit are different, the feature information of the feature scanning rod 1 can still be formed. For example, if the groove depth of the first through groove 126 in the first feature scanning rod 1 of the feature scanning rod kit is 2mm, the groove depth of the first through groove 126 in the second feature scanning rod 1 is 1mm, and the groove depth of the first through groove 126 in the third feature scanning rod 1 is 3mm, the feature information of the feature scanning rod 1 can still be formed.

[0123] In some embodiments, the groove depth of the first through groove 126 in some feature scanning rods 1 of the feature scanning rod kit may be the same. In this case, although it cannot constitute the feature information of the feature scanning rod 1 on its own, it can constitute the feature information of the feature scanning rod 1 together with other features. For example, three of the nine feature scanning rods 1 in the feature scanning rod kit are grouped together, and the groove depth of each feature scanning rod 1 in each group is the same.

[0124] In some embodiments, for ease of manufacturing, the groove depth of the first through groove 126 in each feature scanning bar 1 of the feature scanning bar kit may also be the same.

[0125] Third, the characteristic parameter is the tilt angle of the first through groove 126 relative to the transverse axis (Y-axis) of the identification body 12.

[0126] The first through slot 126 may be inclined relative to the transverse axis (Y-axis) of the identification body 12, or the first through slot 126 may be arranged along the transverse axis (Y-axis) of the identification body 12; optionally, the inclination angle of each first through slot 126 relative to the transverse axis (Y-axis) of the identification body 12 is -65° to +65°. Alternatively, the inclination angle of each first through slot 126 relative to the transverse axis (Y-axis) of the identification body 12 is -45° to +45°. Alternatively, the inclination angle of each first through slot 126 relative to the transverse axis (Y-axis) of the identification body 12 is -30° to +30°. When the first through slot 126 is arranged along the transverse axis (Y-axis) of the identification body 12, the inclination angle of the first through slot 126 relative to the transverse axis (Y-axis) of the identification body 12 is 0°. Wherein, for example... Figure 2 As shown, when the first through groove 126 is inclined in the positive direction of the X-axis, the inclination angle is positive; when the first through groove 126 is inclined in the negative direction of the X-axis, the inclination angle is negative; the inclination angle can be -65°, -60°, -55°, -50°, -45°, -40°, -35°, -30°, -20°, -10°, -5°, 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 80°, or 85°.

[0127] The tilt angles of the first through slots 126 within a single feature scanning rod 1 can be completely different, or the tilt angles of some of the first through slots 126 within a single feature scanning rod 1 can be the same. When the tilt angles of the first through slots 126 within a single feature scanning rod 1 are presented in the manner described above, the tilt angles of the first through slots 126 in each feature scanning rod 1 of the feature scanning rod kit can all be different, and at this time, they can independently form the feature information of the feature scanning rod 1.

[0128] In some embodiments, the tilt angles of the first through slots 126 in a single feature scanning rod 1 can all be the same. However, even when the tilt angles of the first through slots 126 in each feature scanning rod 1 of the feature scanning rod assembly are different, the feature information of the feature scanning rod 1 can still be formed. For example, if the tilt angles of the first through slots 126 in the first feature scanning rod 1 are all 45°, the tilt angles of the first through slots 126 in the second feature scanning rod 1 are all 40°, the tilt angles of the first through slots 126 in the third feature scanning rod 1 are all 30°, the tilt angles of the first through slots 126 in the fourth feature scanning rod 1 are all 25°, the tilt angles of the first through slots 126 in the fifth feature scanning rod 1 are all 20°, the tilt angles of the first through slots 126 in the sixth feature scanning rod 1 are all -20°, and the tilt angles of the first through slots 126 in the seventh feature scanning rod 1 are all -5°, the feature information of the feature scanning rod 1 can still be formed.

[0129] In some embodiments, the inclination angles of the first through slots 126 within some feature scanning rods 1 of the feature scanning rod kit may be the same. In this case, although they cannot constitute the feature information of the feature scanning rod 1 independently, they can constitute the feature information of the feature scanning rod 1 together with other features. For example, three of the nine feature scanning rods 1 in the feature scanning rod kit are grouped together, and the inclination angles of each feature scanning rod 1 in each group are the same. In some embodiments, the inclination angles of the first through slots 126 in each feature scanning rod 1 of the feature scanning rod kit may also be the same.

[0130] like Figure 4 and Figure 5 As shown, the identification body 12 has a first end 123 and a second end 124. The identification body 12 is connected to the connector 11 through the second end 124. The connector 11 can be connected to the bottom surface of the second end 124. The first end 123 is provided with a first through groove 126.

[0131] The first end 123, through the first through slot 126, allows the feature parameters of the first end 123 of each feature scanning rod 1 in the feature scanning rod kit to be different. This enables the oral scanner to identify the feature scanning rod 1 through the first end 123 during scanning, improving the accuracy of stitching with standard models in the standard library and avoiding stitching errors during real-time scanning reconstruction, thus improving scanning efficiency and accuracy. During installation, the user can position the first ends 123 of each feature scanning rod 1 in the oral cavity in a converged shape. During scanning, after scanning one frame, the identity information of the feature scanning rod 1 can be determined based on the feature information of the first end 123 in the image, resulting in higher identification efficiency.

[0132] (3) The feature parameters of the second protrusion 125 can constitute the feature information of the feature scanning rod 1. Among them, the feature parameters include at least one of height and length.

[0133] Optionally, the height of the second protrusion 125 in a single feature scanning rod 1 may be inconsistent, so that the feature scanning rod 1 has multiple upper surfaces with different heights, increasing the feature information of the feature scanning rod 1, accelerating the overall scanning progress and improving the scanning accuracy.

[0134] (4) At least one surface of the second protrusion 125 is a second inclined surface, and the inclination angle of the second inclined surface forms the feature information of the feature scanning rod 1. The aforementioned surface includes the top surface and the side surface of the second protrusion 125.

[0135] Optionally, the inclination angle of the second inclined surface in the second protrusion 125 can be 10~80°. For example, the inclination angle can be 80°, 75°, 70°, 65°, 60°, 55°, 50°, 45°, 40°, 35°, 30°, 25°, 20°, 19°, 17°, 16.5°, 16°, 17.5°, 18°, 15°, 13°, 12.5°, 10°, etc.

[0136] Optionally, the inclination angle of the second inclined surface in the second protrusion 125 can be 10~60°, or 10~30°, or 10~45°.

[0137] (5) The number of second protrusions 125 can constitute the feature information of each feature scanning rod 1.

[0138] (6) The shape information of the second protrusion 125 can constitute the feature information of each feature scanning rod 1.

[0139] (7) The distribution position of the second protrusion 125 or the first through groove 126 can constitute the feature information of each feature scanning rod 1. The distribution position of the second protrusion 125 or the first through groove 126 includes: the distance between the second protrusion 125 or the first through groove 126 and the axis of the connector 11, the interval between two adjacent first through grooves 126 or second protrusions 125, etc.

[0140] The implementation methods of the feature information of the second protrusion 125 constituting the scanning feature rod are the same as the implementation methods of the feature information of the first identification body 131 constituting the feature scanning rod 1, and will not be repeated here.

[0141] In some embodiments, in a single feature scanning bar 1, each second protrusion 125 has one or more auxiliary cuts 127 on its top surface, the depth of the auxiliary cuts 127 being less than the depth of the first through groove 126. Optionally, the depth of the auxiliary cuts 127 is 0.5-1.5 mm, and the depth of the first through groove 126 is 1.6-2 mm.

[0142] Optionally, the auxiliary notch 127 can be configured to give the feature scanning rod 1 multiple upper planes of different heights, thereby increasing the feature information of the feature scanning rod 1, accelerating the overall scanning progress, and improving the scanning accuracy.

[0143] (1) The number of auxiliary incisions 127 can form the feature information of feature scanning rod 1.

[0144] The number of auxiliary cuts 127 within each feature scanning rod 1 is completely different. In this case, the number of auxiliary cuts 127 can independently form the feature information of the feature scanning rod 1. In some feature scanning rods 1 within the feature scanning rod kit, the number of auxiliary cuts 127 is the same. Although the number of auxiliary cuts 127 cannot independently form the feature information of the feature scanning rod 1, they can form the feature information of the feature scanning rod 1 together with other features. For example, in the feature scanning rod kit, three out of the nine feature scanning rods 1 are grouped together. In the first group, each feature scanning rod 1 has three cuts; in the second group, each feature scanning rod 1 has two cuts; and in the third group, each feature scanning rod 1 has one cut.

[0145] (2) The cutting depth of the auxiliary incision 127 can form the feature information of the feature scanning rod 1.

[0146] Each second protrusion 125 is provided with one or more auxiliary cuts 127, and the depths of each auxiliary cut 127 within a single feature scanning rod 1 can be completely different or partially the same.

[0147] The depths of the auxiliary cuts 127 of each feature scanning rod 1 in the feature scanning rod kit can be completely different. In this case, the cutting depth of the auxiliary cuts 127 can independently form the feature information of the feature scanning rod 1.

[0148] In some embodiments, the cutting depth of each auxiliary cut 127 within a single feature scanning rod 1 can be the same; however, even when the cutting depth of the auxiliary cuts 127 within each feature scanning rod 1 in the feature scanning rod kit is different, feature information of the feature scanning rod 1 can still be formed. For example, if the cutting depth of the auxiliary cuts 127 within the first feature scanning rod 1 in the feature scanning rod kit is 1 mm, the cutting depth of the auxiliary cuts 127 within the second feature scanning rod 1 is 0.7 mm, and the cutting depth of the auxiliary cuts 127 within the third feature scanning rod 1 is 0.5 mm, feature information of the feature scanning rod 1 can still be formed.

[0149] For ease of manufacturing, the cutting depths of the auxiliary cuts 127 in some of the feature scanning rods 1 in the feature scanning rod kit are the same. At this time, although the cutting depth of the auxiliary cut 127 cannot form the feature information of the feature scanning rod 1 alone, it can form the feature information of the feature scanning rod 1 together with other features.

[0150] (3)The shape of the auxiliary cut 127 forms the feature information of the feature scanning rod 1.

[0151] The shapes of the auxiliary cuts 127 in each feature scanning rod 1 are completely different. At this time, the shape of the auxiliary cut 127 can form the feature information of the feature scanning rod 1 alone.

[0152] In some embodiments, within a single feature scanning rod 1, the shapes of the respective auxiliary cuts 127 may be different and can also form the feature information of the feature scanning rod 1.

[0153] In some embodiments, within a single feature scanning rod 1, the shapes of the respective auxiliary cuts 127 may be the same; however, when the shapes of the auxiliary cuts 127 in each feature scanning rod 1 in the feature scanning rod kit are all different, it can also form the feature information of the feature scanning rod 1. For example, the auxiliary cuts 127 in the first feature scanning rod 1 in the feature scanning rod kit are all "L"-shaped, the auxiliary cuts 127 in the second feature scanning rod 1 are all "-" -shaped, and the auxiliary cuts 127 in the third feature scanning rod 1 are all "□" -shaped, and it can also form the feature information of the feature scanning rod 1.

[0154] In some embodiments, in this embodiment, the auxiliary cut 127 may not penetrate the side wall of the second protrusion 125; or, the second protrusion 125 may penetrate one or more side walls of the second protrusion 125.

[0155] (4)The arrangement pattern of the auxiliary cuts 127 constitutes the feature information of the feature scanning rod 1.

[0156] When the arrangement patterns of the auxiliary cuts 127 in each feature scanning rod 1 in the feature scanning rod kit are all different, it can also form the feature information of the feature scanning rod 1. For example, in some feature scanning rods 1 in the feature scanning rod kit, multiple auxiliary cuts 127 are arranged in a circular pattern, in some feature scanning rods 1, multiple auxiliary cuts 127 are arranged in a rectangular pattern, and in some feature scanning rods 1, multiple auxiliary cuts 127 are arranged in a polygonal pattern.

[0157] The auxiliary cuts 127 of the same shape can also be arranged in different ways within each feature scanning rod 1, thus forming feature information of the feature scanning rod 1. For example, they are all "I"-shaped auxiliary cuts 127, but the auxiliary cuts 127 can extend along the width direction of the recognition body 12, or the auxiliary cuts 127 can extend along the length direction of the recognition body 12. When the "I"-shaped auxiliary cuts 127 all extend along the length direction of the recognition body 12, some auxiliary cuts 127 can penetrate the side of the second protrusion 125 and face the plane where the first side 121 of the recognition body 12 is located, and some auxiliary cuts 127 can penetrate the side of the second protrusion 125 and face the plane where the second side 122 of the recognition body 12 is located, thus making the orientation of each auxiliary cut 127 different and presenting different arrangement methods.

[0158] For example, both are "L"-shaped auxiliary cuts 127. The long cut edge of the "L"-shaped auxiliary cut 127 can extend along the length direction of the recognition body 12. In this extension method, the long cut edge can also face the plane where the first side 121 or the second side 122 of the recognition body 12 is located. The long cut edge of the "L"-shaped auxiliary cut 127 can extend along the width direction of the recognition body 12. In this way, the short cut edge of the "L"-shaped auxiliary cut 127 can face the plane where the first side 121 or the second side 122 of the recognition body 12 is located.

[0159] The shape and / or arrangement of the auxiliary cuts 127 within a single feature scanning bar 1 can be completely different, or the shape and / or arrangement of the auxiliary cuts 127 within a single feature scanning bar 1 can be partially the same. This arrangement facilitates the asymmetrical arrangement of the feature recognition elements on the recognition body 12 within a single feature scanning bar 1 with respect to the transverse axis (Y-axis) and / or axial axis (X-axis) of the recognition body 12.

[0160] In some embodiments, when there is no auxiliary cut 127 on the second protrusion 125, the second protrusion 125 of the same shape can also be arranged in different ways in each feature scanning rod 1, and feature information of the feature scanning rod 1 can also be formed at this time; the specific principle is the same as the auxiliary cut 127 mentioned above, and will not be repeated here.

[0161] Optionally, the bottom surface of the auxiliary cut 127 is a fourth inclined surface, thereby increasing the feature information of the feature scanning rod 1 and improving the overall scanning accuracy. Optionally, the tilt angle between the fourth inclined surface and the XY plane can be 10-40°. For example, the tilt angle can be 40°, 35°, 30°, 25°, 20°, 15°, 10°, etc.

[0162] In some embodiments, such as Figure 4 and Figure 5As shown, the second end 124 is provided with a second protrusion 125. On the second protrusion 125, one or more auxiliary cuts 127 form an annular protrusion, at least one arcuate protrusion, or multiple dot-shaped protrusions surrounding the connecting through hole 1241. These annular protrusions, arcuate protrusions, or dot-shaped protrusions also serve as feature recognition elements. When multiple arcuate protrusions are provided, they are spaced apart around the connecting through hole 1241; when multiple dot-shaped protrusions are provided, they are spaced apart around the connecting through hole 1241. This arrangement allows the second ends 124 of multiple feature scanning rods in the feature scanning rod kit to have different structures and sizes, improving scanning efficiency and accuracy. This enables the feature scanning rod 1 to identify its identity through the second end during scanning, improves the accuracy of splicing with standard models in the standard library, avoids splicing errors during real-time scanning reconstruction, and ultimately yields a high-precision three-dimensional oral cavity model. In addition, since the second end is provided with a connecting through hole, it can be set with annular protrusions, arc-shaped protrusions or dot-shaped protrusions to avoid splicing errors and improve splicing accuracy.

[0163] (1) Annular protrusions, arc protrusions and dot protrusions are all different types of protrusions. When different types of protrusions are provided around the connecting through hole 1241 on each feature scanning rod 1 in the feature scanning rod kit, feature information of feature scanning rod 1 can also be formed.

[0164] (2) The number of protrusions around the connecting through-hole 1241 on each feature scanning rod 1 in the feature scanning rod kit can also form the feature information of the feature scanning rod 1. For example, Figure 1 , Figure 8 and Figure 14 As shown, a protrusion is provided around the connecting through hole 1241 of the first feature scanning rod 1. This protrusion can be an arc-shaped protrusion, an annular protrusion, or a dot-shaped protrusion, such as... Figure 4 , Figure 10 and Figure 16 As shown, two protrusions are provided around the connecting through hole 1241 of the second feature scanning rod 1. Each of the two protrusions can be an arc-shaped protrusion or a dot-shaped protrusion, such as... Figure 6 , Figure 12 and Figure 18 As shown, three protrusions may be provided around the connecting through hole 1241 of the third feature scanning rod 1. Each of the three protrusions may be an arc-shaped protrusion or a dot-shaped protrusion.

[0165] (3) The number and type of protrusions can be superimposed to form the feature information of feature scanning rod 1. For example, the first feature scanning rod 1 has 1 arc-shaped protrusion, the second feature scanning rod 1 has 2 dot-shaped protrusions, and the third feature scanning rod 1 has 3 dot-shaped protrusions, thus forming the feature information of feature scanning rod 1.

[0166] In some embodiments, such as Figure 1 As shown, a support protrusion 1251 is formed on the second protrusion 125 located at the second end 124 through one or more auxiliary cuts 127. The support protrusion 1251 connects to one of the annular protrusion, at least one arcuate protrusion, or multiple dot-shaped protrusions. The support protrusion 1251 is located on one side of the annular protrusion, at least one arcuate protrusion, or multiple dot-shaped protrusions and is close to the first end 123 of the identification body 12. For example, the support protrusion 1251 can be a "straight" protrusion. Of course, some feature scanning rods 1 may not have a support protrusion 1251. And / or, as Figure 10 As shown, the aforementioned annular, arc-shaped, or dot-shaped protrusions may also be provided with auxiliary cuts 127. Some feature scanning rods 1 may not have auxiliary cuts 127 on their annular, arc-shaped, or dot-shaped protrusions. This configuration allows the feature scanning rod 1 to form its own feature information, making scanning easier and improving scanning accuracy.

[0167] Optionally, the second end 124 has a connection through hole 1241 for connection with the implant or abutment; the connector 11 is a hollow structure, such as... Figure 22 As shown, screws or other fasteners 2 can be inserted into the connecting through hole 1241 and the connector 11 to connect with the implant or abutment. Optionally, such as... Figure 3 As shown, the inner wall of the connecting through hole 1241 may be provided with an anti-loosening part 1242 for screw external wall thread engagement, thereby effectively preventing the screw from coming out of the connecting through hole 1241.

[0168] Optional, such as Figure 2 As shown, the width of the first end 123 is smaller than the width of the middle part of the identification body 12 and the width of the second end 124. The first end 123 is a pointed cylinder or pyramid, and the second end 124 is cylindrical. In some embodiments, such as Figure 4 The second end 124 shown can be cuboid, so whether the second end 124 is cuboid or cylindrical can form the feature information of the feature scanning rod 1. The width of the first end 123 of the identification body 12 gradually decreases along the positive X-axis, so that the first end 123 is in the shape of a pointed cylinder or pyramid, which can prevent mutual interference when it is installed in a narrow environment within the openings of multiple feature scanning rods.

[0169] In some embodiments, the cylinder described above can be a partial cylinder, and the orthographic projection of the outer contour of the partial cylinder in the height direction of the recognition body 12 is an arc, such as... Figure 2 and Figure 7 As shown, the central angle of the arc of each feature scanning rod 1 in the feature scanning rod kit can be different, thereby forming the feature information of the feature scanning rod 1.

[0170] In this embodiment, the above-mentioned protruding features are provided around the connecting through hole 1241, so that after retrieving the complete standard model from the standard library, the complete standard model can be accurately stitched onto the scanned and reconstructed model based on the above-mentioned protruding features, thereby improving the stitching accuracy.

[0171] In some embodiments, such as Figure 21 As shown, the feature recognition element also includes at least one or more second through slots 129. The second through slots 129 are formed on the top surface of the recognition body 12 and are arranged along the axial axis (X-axis) of the recognition body 12. The second through slots 129 penetrate the first end 123. The arrangement of the second through slots 129 can also increase the feature information of the feature scanning rod 1, thereby improving scanning efficiency and scanning accuracy.

[0172] (1) The number of second through slots 129 can constitute the feature information of feature scanning rod 1.

[0173] (2) The feature parameters of the second through groove 129 can constitute the feature information of the feature scanning rod 1. The feature parameters can be at least one of the groove width, length and groove depth; wherein, the groove width and groove depth constitute the feature information in the same way as the groove width and groove depth constitute the feature information in the first through groove 126, and will not be repeated here.

[0174] In some embodiments, when the lengths of the second through slots 129 in each feature scanning rod 1 are different, this can also constitute the feature information of the feature scanning rod 1.

[0175] In some embodiments, the lengths of the second through slots 129 in a single feature scanning rod 1 may all be the same, but when the lengths of the second through slots 129 in each feature scanning rod 1 in the feature scanning rod kit are not the same, the feature information of the feature scanning rod 1 can still be constituted.

[0176] In some embodiments, the second through groove 129 may also be inclined relative to the axial axis (X-axis) of the identification body 12. In this case, the inclination angle of the second through groove 129 can constitute the feature information of the feature scanning rod 1. The specific implementation method is the same as the implementation method of the inclination angle of the first through groove 126 constituting the feature information of the feature scanning rod 1, and will not be described again here.

[0177] Optionally, the inclination angle of the second through groove 129 relative to the axial axis of the identification body 12 can be -30°~30°, or -20°~20°, or -10°~10°.

[0178] Optionally, the second through groove 129 may penetrate the first end 123 of the identification body 12.

[0179] In some embodiments, a single feature scanning bar 1 may contain only the second through groove 129, or only the first through groove 126, or both the first through groove 126 and the second through groove 129. This allows for the construction of feature information for the feature scanning bar 1 by providing different types of through grooves. Furthermore, this configuration allows for the design of feature scanning bars 1 with different widths to accommodate patients with different oral cavity sizes.

[0180] In some embodiments, such as Figure 22 As shown, the fixing member 2 is provided with a fixing threaded portion 21 and an anti-detachment threaded portion 22. When the fixing member 2 is a screw, the anti-detachment threaded portion 22 is provided on the screw head. The fixing threaded portion 21 is used to connect with the implant or abutment, and the anti-detachment threaded portion 22 is used to thread into the anti-detachment portion 1242 in the connecting through hole 1241. The diameter of the anti-detachment threaded portion 22 is larger than that of the fixing threaded portion 21 to prevent the fixing member 2 from coming out of the connecting through hole 1241.

[0181] In some embodiments, such as Figure 5 , Figure 7 , Figure 9 , Figure 11 , Figure 13 , Figure 15 , Figure 17 , Figure 18 As shown, the feature recognition element includes: one or more first recognition bodies 131, one or more first through grooves 126, and one or more second protrusions 125. The first through grooves 126 penetrate the first side surface 121, the second side surface 122, and the top surface of the recognition body 12, and divide the top of the recognition body 12 into one or more second protrusions 125. The first recognition bodies 131 are disposed on the top surface of the extended recognition flange 13, and the distribution position of the first recognition bodies 131 on the extended recognition flange 13 corresponds to the position of the first through grooves 126 penetrating the first side surface 121 or the second side surface 122.

[0182] As shown in the figure, the distribution positions of every two first identification bodies 131 correspond to the two ends of the first through groove 126, and are located exactly below the end of the first through groove 126. This arrangement is not only more aesthetically pleasing, but also the distribution design of the first identification bodies 131 and the first through groove 126 are related. During the scanning process, the two feature recognition elements can cross-verify each other, avoiding mis-scanning and splicing errors.

[0183] For example, if the feature scanning rod 1 has an inclined first through groove 126, then the first identification body 131 on the extended identification flange 13 located on the first side 121 will be arranged in a front-to-back manner relative to the first identification body 131 on the extended identification flange 13 located on the second side 122.

[0184] The number, angle, and spacing of the first through slots 126 in the feature scanning rod 1 will affect the number and spacing of the first identification bodies 131. For example, if the feature scanning rod 1 has two first through slots 126 with negative and positive tilt angles respectively, then the spacing between two adjacent first identification bodies 131 on the extended identification flange 13 on the first side 121 will be greater than the spacing between two adjacent first identification bodies 131 on the extended identification flange 13 on the second side 122.

[0185] In some embodiments, such as Figure 23 As shown, a feature scanning bar kit includes nine feature scanning bars (a), (b), (c), (d), (e), (f), (g), (h), and (i). For ease of description, the nine feature scanning bars can be divided into three groups according to their size. The first group includes feature scanning bars (a), (b), and (c); the second group includes feature scanning bars (d), (e), and (f); and the third group includes feature scanning bars (g), (h), and (i). The maximum width and height of the three groups of feature scanning bars are equal. The lengths of all feature scanning bars in the first group, the second group, and the third group are all equal. The length of the feature scanning bars in the first group is greater than that in the second group, and the length of the feature scanning bars in the second group is greater than that in the third group. It should be noted that the grouping method can be varied, and they can also be divided according to features; this is not limited here.

[0186] Furthermore, in the three sets of feature scanning rods 1, each feature scanning rod 1 has two extended identification flanges 13, which are symmetrically distributed along the X-axis on the first side surface 121 and the second side surface 122. The two sides of the first identification body 131 along the X-axis are both inclined surfaces.

[0187] like Figures 1 to 7 As shown, in the first group, each extended identification flange 13 in the feature scanning rod (a), (b) and (c) is provided with 3 first identification bodies 131; each feature scanning rod 1 in the first group is provided with 4 first through grooves 126, of which 1 first through groove 126 is located at the first end 123, and the 4 first through grooves 126 will divide the top of the feature scanning rod 1 into four protrusions.

[0188] like Figure 1 and Figure 2As shown, in the feature scanning bar (a), on the extended identification flange 13 of the first side 121, along the direction from the second end 124 of the identification body 12 to the first end 123 (i.e., along the positive X-axis direction), the height of the three first identification bodies 131 gradually increases; on the extended identification flange 13 of the second side 122, along the direction from the second end 124 of the identification body 12 to the first end 123 (i.e., along the positive X-axis direction), the height of the three first identification bodies 131 first decreases and then increases, and the height of the first identification body 131 closer to the first end 123 is greater than the height of the first identification body 131 closer to the second end 124.

[0189] In Group 1, such as Figure 1 and Figure 2 As shown, in the feature scanning rod (a), along the direction from the second end 124 of the identification body 12 to the first end 123, an arc-shaped protrusion is provided around the connecting through hole 1241 on the first second protrusion 125. A "one-line" support protrusion 1251 is connected to the arc-shaped protrusion near the first end 123. The second, third, and fourth second protrusions 125 each have four sides. The second second protrusion 125 is provided with a "one-line" auxiliary cutout 127 that penetrates the three sides and the top surface of the second second protrusion 125. The "one-line" auxiliary cutout 127 faces the identification body. The first side 121 of the body 12; the third second protrusion 125 is provided with a “one-line” auxiliary cut 127 that penetrates the three sides and the top surface of the second protrusion 125, and the “one-line” auxiliary cut 127 faces the second side 122 of the identification body 12; the fourth second protrusion 125 is provided with an “L-shaped” auxiliary cut 127 that penetrates all the sides and the top surface of the second protrusion 125, the short cut edge of the “L-shaped” auxiliary cut 127 extends along the width direction of the identification body 12 and communicates with the first through groove 126 located at the first end 123, and the long cut edge of the “L”-shaped auxiliary cut 127 faces the second side 122 of the identification body 12.

[0190] In the feature scanning bar (a), the inclination angle of the first through groove 126 near the second end 124 is positive, the inclination angle of the first through groove 126 in the middle is negative, and the inclination angle of the first through groove 126 near the first end 123 is 0°. Since the distribution position of the first identification body 131 on the extended identification flange 13 corresponds to the position of the first through groove 126 penetrating the first side 121 or the second side 122, the interval between at least one adjacent two first identification bodies 131 on the extended identification flange 13 on the second side 122 is greater than the interval between at least one adjacent two first identification bodies 131 on the extended identification flange 13 on the first side 121.

[0191] Optionally, the spacing between two adjacent first identifiers 131 decreases in the direction from the second end 124 of the identifier body 12 to the first end 123 (i.e., along the positive X-axis direction). On the extended identifier flange 13 located on the second side 122, the spacing between two adjacent first identifiers 131 can be equal or unequal in the direction from the second end 124 of the identifier body 12 to the first end 123 (i.e., along the positive X-axis direction).

[0192] For example, in the first group, the inclination angle of the first through groove 126 near the second end 124 of the feature scanning bar (a) is 30°, the inclination angle of the first through groove 126 in the middle is -10°, and the inclination angle of the first through groove 126 near the first end 123 is 0°. On the extended recognition flange 13 located on the first side 121, along the positive X-axis direction, the interval between two adjacent first recognition bodies 131 is 5mm. On the extended recognition flange 13 located on the second side 122, along the positive X-axis direction, the intervals between two adjacent first recognition bodies 131 are 7.5mm and 4mm, respectively.

[0193] like Figure 4 and Figure 5 As shown, in the feature scanning bar (b), on the extended identification flange 13 of the first side 121, the height of the three first identification bodies 131 gradually increases along the positive X-axis direction; on the extended identification flange 13 of the second side 122, the height of the three first identification bodies 131 gradually increases along the positive X-axis direction.

[0194] like Figure 4 and Figure 5 As shown, in the feature scanning rod (b), along the positive X-axis direction, the first second protrusion 125 has two arc-shaped protrusions around the connecting through hole 1241; the second, third, and fourth second protrusions 125 each have four sides, and the second second protrusion 125 has a "one-line" auxiliary cut 127 penetrating through the three sides and top surface of the second protrusion 125, with the "one-line" auxiliary cut 127 facing the second side 122 of the recognition body 12; the third second protrusion 125 has a penetrating through The second protrusion 125 has a “one-line” auxiliary cut 127 that penetrates the three sides and top surface of the second protrusion 125, with the “one-line” auxiliary cut 127 facing the first side 121 of the identification body 12; the fourth second protrusion 125 has a “one-line” auxiliary cut 127 that penetrates the second protrusion 125, with the three sides and top surface of the second protrusion 125, with the “one-line” auxiliary cut 127 facing the second side 122 of the identification body 12; chamfers are formed on the two opposite sides of the fourth second protrusion 125 along the Y-axis direction.

[0195] In the feature scanning bar (b), the inclination angle of the first through groove 126 near the second end 124 is positive, the inclination angle of the first through groove 126 in the middle is 0, and the inclination angle of the first through groove 126 near the first end 123 is negative. Since the distribution position of the first identification body 131 on the extended identification flange 13 corresponds to the position of the first through groove 126 penetrating the first side 121 or the second side 122, the interval between at least two adjacent first identification bodies 131 on the extended identification flange 13 on the second side 122 is greater than the interval between at least two adjacent first identification bodies 131 on the extended identification flange 13 on the first side 121.

[0196] For example, the inclination angle of the first through groove 126 near the second end 124 in the feature scanning bar (b) is 20°, the inclination angle of the first through groove 126 in the middle is 0°, and the inclination angle of the first through groove 126 near the first end 123 is -25°. On the extended identification flange 13 located on the first side 121, in the direction from the second end 124 of the identification body 12 to the first end 123, the intervals between two adjacent first identification bodies 131 are 4mm and 4.5mm, respectively. On the extended identification flange 13 located on the second side 122, in the direction from the second end 124 of the identification body 12 to the first end 123, the intervals between two adjacent first identification bodies 131 are 5mm and 6mm, respectively.

[0197] like Figure 6 and Figure 7 As shown, in the feature scanning bar (c), on the extended identification flange 13 of the first side 121, along the positive X-axis direction, the height of the three first identification bodies 131 first decreases and then increases, and the height of the first identification bodies 131 at both ends is equal; on the extended identification flange 13 of the second side 122, along the positive X-axis direction, the height of the three first identification bodies 131 first decreases and then increases, and the height of the first identification body 131 near the first end 123 is greater than the height of the first identification body 131 near the second end 124.

[0198] like Figure 6 and Figure 7As shown, in the feature scanning rod (c), along the direction from the second end 124 of the identification body 12 to the first end 123, the first second protrusion 125 has three dot-shaped protrusions around the connecting through hole 1241; the second, third, and fourth second protrusions 125 each have four sides, and the second second protrusion 125 has a "one-line" auxiliary cut 127 penetrating through the three sides and top surface of the second protrusion 125, with the "one-line" auxiliary cut 127 facing the second side 122 of the identification body 12; the third second protrusion 125 has three... The side and top surfaces have “I-shaped” auxiliary cuts 127, which face the first side surface 121 of the identification body 12; the fourth second protrusion 125 has an “L-shaped” auxiliary cut 127 that runs through all sides and the top surface of the second protrusion 125, the short cut edge of the “L-shaped” auxiliary cut 127 extends along the width direction of the identification body 12 and is away from the first end 123, and the long cut edge of the “L-shaped” auxiliary cut 127 faces the second side surface 122 of the identification body 12; chamfers are formed on the two opposite sides of the fourth second protrusion 125 along the Y-axis direction.

[0199] like Figure 6 and Figure 7 As shown, the inclination angle of the first through groove 126 near the second end 124 in the feature scanning rod (c) is negative, the inclination angle of the first through groove 126 in the middle is positive, and the inclination angle of the first through groove 126 near the first end 123 is 0. Since the distribution position of the first identification body 131 on the extended identification flange 13 corresponds to the position of the first through groove 126 penetrating the first side 121 or the second side 122, the interval between at least one adjacent first identification body 131 on the extended identification flange 13 on the first side 121 is greater than the interval between at least one adjacent first identification body 131 on the extended identification flange 13 on the second side 122. The interval between at least one adjacent first identification body 131 on the extended identification flange 13 on the second side 122 is greater than the interval between at least one adjacent first identification body 131 on the extended identification flange 13 on the first side 121.

[0200] For example, the inclination angle of the first through groove 126 near the second end 124 in the feature scanning bar (c) is -15°, the inclination angle of the first through groove 126 in the middle is 20°, and the inclination angle of the first through groove 126 near the first end 123 is 0°. On the extended identification flange 13 located on the first side 121, in the direction from the second end 124 of the identification body 12 to the first end 123, the intervals between two adjacent first identification bodies 131 are 8mm and 4mm, respectively. On the extended identification flange 13 located on the second side 122, in the direction from the second end 124 of the identification body 12 to the first end 123, the intervals between two adjacent first identification bodies 131 are 5mm and 6mm, respectively.

[0201] like Figures 8 to 13 As shown, in the second group, each extended identification flange 13 within the feature scanning rod (d), (e), and (f) is provided with two first identification bodies 131; each feature scanning rod 1 within the second group is provided with three first through grooves 126, one of which is located at the first end 123, and the three first through grooves 126 will divide the top of the feature scanning rod 1 into three second protrusions 125.

[0202] like Figure 8 and Figure 9 As shown, in the feature scanning bar (d), on the extended identification flange 13 of the first side 121, the height of the two first identification bodies 131 gradually decreases along the direction from the second end 124 of the identification body 12 to the first end 123; on the extended identification flange 13 of the second side 122, the height of the two first identification bodies 131 gradually increases along the direction from the second end 124 of the identification body 12 to the first end 123.

[0203] like Figure 8 and Figure 9As shown, in the feature scanning rod (d), along the direction from the second end 124 of the identification body 12 to the first end 123, an arc-shaped protrusion is provided around the through hole 1241 on the first second protrusion 125; a "one-line" support protrusion 1251 is connected to the arc-shaped protrusion near the first end 123; the second and third second protrusions 125 each have four sides, and the second second protrusion 125 has a through-hole protrusion 1241. 5. Three side and top surfaces have "I-shaped" auxiliary cuts 127, with the "I-shaped" auxiliary cuts 127 facing the second side 122 of the identification body 12; the third second protrusion 125 has an "L-shaped" auxiliary cut 127 penetrating all sides and top surfaces of the second protrusion 125, with the short cut edge of the "L-shaped" auxiliary cut 127 extending along the width direction of the identification body 12 and away from the first end 123, and the long cut edge of the "L-shaped" auxiliary cut 127 facing the first side 121 of the identification body 12. Chamfers are formed on two opposite sides of the third second protrusion 125 along the Y-axis direction.

[0204] like Figure 8 and Figure 9 As shown, the inclination angle of the first through groove 126 near the second end 124 in the feature scanning rod (d) is negative, and the inclination angle of the first through groove 126 near the first end 123 is positive. Since the distribution position of the first identification body 131 on the extended identification flange 13 corresponds to the position of the first through groove 126 penetrating the first side 121 or the second side 122, the interval between two adjacent first identification bodies 131 on the extended identification flange 13 on the first side 121 is greater than the interval between two adjacent first identification bodies 131 on the extended identification flange 13 on the second side 122.

[0205] For example, the inclination angle of the first through groove 126 near the second end 124 is -25°, the inclination angle of the first through groove 126 near the first end 123 is 10°, in the feature scanning bar (d), on the extended identification flange 13 located on the first side 121, the interval between two adjacent first identification bodies 131 is 6mm, and on the extended identification flange 13 located on the second side 122, the interval between two adjacent first identification bodies 131 is 4mm.

[0206] like Figure 10 and Figure 11 As shown, in the feature scanning bar (e), on the extended identification flange 13 of the first side 121, the height of the two first identification bodies 131 gradually increases along the direction from the second end 124 of the identification body 12 to the first end 123; on the extended identification flange 13 of the second side 122, the height of the two first identification bodies 131 gradually increases along the direction from the second end 124 of the identification body 12 to the first end 123.

[0207] like Figure 10 and Figure 11 As shown, in the feature scanning bar (e), along the direction from the second end 124 of the identification body 12 to the first end 123, the first second protrusion 125 has two arc-shaped protrusions around the connecting through hole 1241; one of the arc-shaped protrusions has an auxiliary cut 127; the second and third second protrusions 125 each have four sides, the second second protrusion 125 has a “one-line” auxiliary cut 127 penetrating through the three sides and top surface of the second protrusion 125, the “one-line” auxiliary cut 127 facing the second side 122 of the identification body 12; the third second protrusion 125 has a “one-line” auxiliary cut 127 penetrating through the three sides and top surface of the second protrusion 125, the “one-line” auxiliary cut 127 facing the first side 121 of the identification body 12; chamfers are formed on the two opposite sides of the third second protrusion 125 along the Y-axis direction.

[0208] like Figure 10 and Figure 11 As shown, in the feature scanning bar (e), the inclination angle of the first through groove 126 near the second end 124 is negative, and the inclination angle of the first through groove 126 near the first end 123 is positive. Since the distribution position of the first identification body 131 on the extended identification flange 13 corresponds to the position of the first through groove 126 penetrating the first side 121 or the second side 122, the interval between two adjacent first identification bodies 131 on the extended identification flange 13 on the first side 121 is greater than the interval between two adjacent first identification bodies 131 on the extended identification flange 13 on the second side 122.

[0209] For example, the inclination angle of the first through groove 126 near the second end 124 is -5°, and the inclination angle of the first through groove 126 near the first end 123 is 25°. On the extended identification flange 13 located on the first side 121, the interval between two adjacent first identification bodies 131 is 6mm, and on the extended identification flange 13 located on the second side 122, the interval between two adjacent first identification bodies 131 is 4mm.

[0210] like Figure 12 and Figure 13 As shown, in the feature scanning bar (f), on the extended identification flange 13 of the first side 121, the height of the two first identification bodies 131 gradually increases along the direction from the second end 124 of the identification body 12 to the first end 123; on the extended identification flange 13 of the second side 122, the height of the first identification body 131 gradually decreases along the direction from the second end 124 of the identification body 12 to the first end 123.

[0211] like Figure 12 and Figure 13 As shown, in the feature scanning rod (f), along the direction from the second end 124 of the identification body 12 to the first end 123, the first second protrusion 125 has an arc-shaped protrusion and two dot-shaped protrusions around the connecting through hole 1241; the arc-shaped protrusion has an auxiliary cut 127; the second and third second protrusions 125 each have four sides, and the second second protrusion 125 has a "one-line" auxiliary cut 127 that penetrates the three sides and the top surface of the second protrusion 125, the "one-line" auxiliary cut 127 facing... The second side 122 of the identification body 12; the third second protrusion 125 is provided with an "L-shaped" auxiliary cut 127 that penetrates all sides and top surface of the second protrusion 125. The short cut edge of the "L-shaped" auxiliary cut 127 extends along the width direction of the identification body 12 and communicates with the first through groove 126 located at the first end 123. The long cut edge of the "L-shaped" auxiliary cut 127 faces the first side 121 of the identification body 12; chamfers are formed on two opposite sides along the Y-axis direction on the third second protrusion 125.

[0212] like Figure 12 and Figure 13 As shown, in the feature scanning bar (f), the inclination angle of the first through groove 126 near the second end 124 is negative, and the inclination angle of the first through groove 126 near the first end 123 is positive. Since the distribution position of the first identification body 131 on the extended identification flange 13 corresponds to the position of the first through groove 126 penetrating the first side 121 or the second side 122, the interval between two adjacent first identification bodies 131 on the extended identification flange 13 on the first side 121 is greater than the interval between two adjacent first identification bodies 131 on the extended identification flange 13 on the second side 122.

[0213] For example, the inclination angle of the first through groove 126 near the second end 124 is -25°, and the inclination angle of the first through groove 126 near the first end 123 is 5°. On the extended identification flange 13 located on the first side 121, the interval between two adjacent first identification bodies 131 is 6.5 mm, and on the extended identification flange 13 located on the second side 122, the interval between two adjacent first identification bodies 131 is 5 mm.

[0214] like Figures 14 to 19 As shown, in the third group, each extended identification flange 13 within the feature scanning rod (g), (h), and (i) is provided with a first identification body 131. Each feature scanning rod 1 within the third group is provided with two first through slots 126, wherein one first through slot 126 is located at the first end 123, and the two first through slots 126 will divide the top of the feature scanning rod 1 into two protrusions.

[0215] Optionally, the height of the first identifier 131 within the feature scanning bars (g), (h), and (i) is the same. Optionally, the height of the first identifier 131 within the feature scanning bars (g), (h), and (i) is different. Optionally, among the first identifiers 131 located on the first side 121, the height of the first identifier 131 on the feature scanning bar (g) is less than the height of the first identifier 131 on the feature scanning bar (i), and the height of the first identifier 131 on the feature scanning bar (i) is less than the height of the first identifier 131 on the feature scanning bar (h). Among the first identifiers 131 located on the second side 122, the height of the first identifier 131 on the feature scanning bar (i) is less than the height of the first identifier 131 on the feature scanning bar (g), and the height of the first identifier 131 on the feature scanning bar (g) is less than the height of the first identifier 131 on the feature scanning bar (h).

[0216] like Figures 14 to 19 As shown, in the third group, the tilt angle of the first through groove 126 is positive. Since the distribution position of the first identification body 131 on the extended identification flange 13 corresponds to the position of the first through groove 126 penetrating the first side 121 or the second side 122, the first identification body 131 on the extended identification flange 13 on the first side 121 is closer to the front (positive X-axis direction) than the first identification body 131 on the extended identification flange 13 on the second side 122.

[0217] Optionally, the tilt angles of the first through groove 126 in the feature scanning bars (g), (h), and (i) are designed to be the same. Alternatively, the tilt angles of the first through groove 126 in the feature scanning bars (g), (h), and (i) are designed to be different. For example, the tilt angles of the first through groove 126 in the feature scanning bars (g), (h), and (i) can be 30°, 20°, or 25°.

[0218] like Figure 14 and Figure 15 As shown, in the feature scanning rod (g), in the direction from the second end 124 of the identification body 12 to the first end 123, an arc-shaped protrusion is provided around the through hole 1241 on the first second protrusion 125; a "one-line" support protrusion 1251 is connected to the arc-shaped protrusion near the first end 123; the second second protrusion 125 has four sides, and an "L-shaped" auxiliary cutout 127 is provided on the second second protrusion 125, penetrating all sides and the top surface of the second second protrusion 125; the short cut edge of the "L-shaped" auxiliary cutout 127 extends along the width direction of the identification body 12 and communicates with the first through groove 126 located at the first end 123; the long cut edge of the "L-shaped" auxiliary cutout 127 faces the first side 121 of the identification body 12; chamfers are formed on the two opposite sides of the second second protrusion 125 along the Y-axis direction.

[0219] like Figure 16 and Figure 17 As shown, in the feature scanning bar (h), in the direction from the second end 124 of the identification body 12 to the first end 123, the first second protrusion 125 has two arc-shaped protrusions around the connecting through hole 1241; one of the arc-shaped protrusions has an auxiliary cut 127; the second second protrusion 125 has four sides, and the second second protrusion 125 has an "L-shaped" auxiliary cut 127 that penetrates all sides and the top surface of the second protrusion 125. The short cut edge of the "L-shaped" auxiliary cut 127 extends along the width direction of the identification body 12 and communicates with the first through groove 126 located at the first end 123. The long cut edge of the "L-shaped" auxiliary cut 127 faces the second side 122 of the identification body 12; chamfers are formed on the two opposite sides of the second second protrusion 125 along the Y-axis direction.

[0220] like Figure 18 and Figure 19 As shown, in the feature scanning bar (h), along the direction from the second end 124 of the identification body 12 to the first end 123, the first second protrusion 125 has an arc-shaped protrusion and two dot-shaped protrusions around the through hole 1241; the arc-shaped protrusion has an auxiliary cut 127; the second second protrusion 125 has four sides, and the second second protrusion 125 has an "L-shaped" auxiliary cut 127 that penetrates all sides and the top surface of the second protrusion 125; the short cut edge of the "L-shaped" auxiliary cut 127 extends along the width direction of the identification body 12 and communicates with the first through groove 126 located at the first end 123; the long cut edge of the "L-shaped" auxiliary cut 127 faces the first side 121 of the identification body 12; chamfers are formed on the two opposite sides of the second second protrusion 125 along the Y-axis direction.

[0221] The dimensions shown in this patent application are for illustrative purposes only and are not intended to be a strict limitation on actual dimensions. The scope of technology covered by this patent application includes, but is not limited to, the specific dimensions shown. Other dimensions that meet the technical requirements and achieve the same technical effect are also within the protection scope of this patent application.

[0222] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A feature scanning bar, characterized in that, The feature scanning rod includes: A connector for connecting to an implant or abutment; An identification body is connected to the connector, and the identification body has a first side and a second side facing each other. One or more extended identification flanges are provided on the first side and / or the second side; The identification body and / or the extended identification flange are provided with feature identification elements.

2. The feature scanning bar of claim 1, wherein, The extended identification flange is located at the bottom or middle of the first side and / or the second side, and the height of the extended identification flange is less than the height of the identification body.

3. The feature scanning bar of claim 1, wherein, The identification body has a first end and a second end, and the extended identification flange extends from the first end to the second end. The width of the two ends of the extended identification flange is smaller than the width of the middle part of the extended identification flange.

4. The feature scanning bar of claim 1, wherein, The length of the extended identification flange is less than the length of the identification body, and one or more extended identification flanges are provided on the same side of the identification body. On the same side of the identification body, multiple extended identification flanges are distributed at intervals along the axial direction of the identification body to form a row of extended identification flange structures. Alternatively, multiple rows of extending identification flange structures can be formed on the same side of the identification body along the height direction of the identification body. Alternatively, multiple rows of extended identification flange structures are formed on the same side of the identification body along the height direction of the identification body. The orthographic projections of each row of extended identification flange structures in the height direction of the identification body overlap or do not overlap at all, thereby achieving the staggered arrangement of the extended identification flanges in the height direction of the identification body.

5. The feature scanning bar of claim 1, wherein, The extended identification flange is provided in two parts, which are located on the first side and the second side respectively, and are symmetrically arranged with respect to the axial axis of the identification body.

6. The feature scanning bar of claim 1, wherein, At least one of the feature recognition elements is asymmetrically arranged relative to the transverse axis and / or axial axis of the recognition body.

7. The feature scanning bar of claim 1, wherein, The feature recognition elements include at least one of the following: protrusions, grooves, non-coded markers, and coded markers.

8. A feature scanning bar according to any one of claims 1 to 7, characterised in that, The feature recognition elements include: One or more first identifiers, wherein the first identifiers are disposed on the top surface of the extended identifier flange; When multiple first identification bodies are provided, the multiple first identification bodies are distributed at intervals along the axial direction of the identification body on the top surface of the extended identification flange.

9. The feature scanning bar of claim 8, wherein, At least one surface of the first identifier is a curved surface or a first inclined surface.

10. The feature scanning bar of claim 9, wherein, When multiple surfaces of the first identifier are first inclined surfaces, the inclination angle of each first inclined surface may be the same or not exactly the same; the inclination angle of the first inclined surface relative to the axis of the connector is 10~80°.

11. The feature scanning bar of claim 8, wherein, When there are multiple first identifiers, the interval between each pair of adjacent first identifiers is not exactly the same.

12. The feature scanning bar of claim 8, wherein, When there are multiple first identifiers, the feature parameters of each first identifier are not exactly the same; The feature parameters include at least one of length, width, height, angle, and radian.

13. The feature scanning bar of any of claims 1-7, wherein, The feature recognition elements include: One or more first through slots and multiple second protrusions, wherein the first through slots penetrate the first side surface, the second side surface and the top surface of the identification body and divide the top of the identification body into multiple second protrusions; When multiple first through slots are provided, the multiple first through slots are distributed at intervals along the axial direction of the identification body on the top of the identification body.

14. The feature scanning bar of claim 13, wherein, The width of the first through groove gradually increases in the direction away from the top surface of the identification body; Alternatively, when there are multiple first through slots, the depth and maximum width of each first through slot are not exactly the same; Alternatively, when there are multiple first through slots, the depth and maximum width of each first through slot are the same.

15. The feature scanning bar of claim 13, wherein, At least one of the first through slots is inclined relative to the lateral axis of the identification body; And / or, at least one of the first through slots is disposed along the transverse axis of the identification body.

16. The feature scanning rod according to claim 15, characterized in that, When multiple first through slots are provided, the inclination angles of the multiple first through slots relative to the transverse axis of the identification body are not exactly the same, and the inclination angle of the first through slot relative to the transverse axis of the identification body is -65° to +65°.

17. The feature scanning bar of claim 13, wherein, The identification body has a first end and a second end. The identification body is connected to the connector through the second end, and the first end is provided with the first through groove.

18. The feature scanning bar of claim 13, wherein, At least one surface of the second protrusion is an arc surface or a second inclined surface.

19. The feature scanning rod according to claim 18, characterized in that, When the multiple surfaces of the second protrusion are second inclined surfaces, the inclination angle of each second inclined surface may be the same or not exactly the same; the inclination angle of the second inclined surface relative to the axis of the connector is 10~80°.

20. The feature scanning bar of claim 13, wherein, The height and length of each of the second protrusions are not exactly the same, and an auxiliary cut is provided on the top surface of each of the second protrusions. The cutting depth of the multiple auxiliary cuts is not exactly the same.

21. The feature scanning bar of claim 13, wherein, At least one of the top surfaces of the second protrusion has one or more auxiliary cuts, the auxiliary cuts penetrating one or more sidewalls of the second protrusion, and the depth of the auxiliary cuts is less than the depth of the first through groove.

22. The feature scanning bar of claim 21, wherein, The identification body has a first end and a second end, and the identification body is connected to the connector through the second end. The second end has a connection through hole for connecting to the implant or the abutment. The second end is provided with the second protrusion, and on the second protrusion located at the second end, a ring protrusion, at least one arc-shaped protrusion, or multiple dot-shaped protrusions are formed around the connecting through hole through one or more of the auxiliary cuts.

23. The feature scanning bar of claim 22, wherein, A support rod protrusion is formed on the second protrusion located at the second end through one or more of the auxiliary cuts. The support rod protrusion is connected to one of the annular protrusion, the at least one arcuate protrusion, or the plurality of dot-shaped protrusions.

24. The feature scanning bar of any of claims 1-7, wherein, The feature recognition elements include: one or more first recognition bodies, one or more first through slots, and one or more second protrusions. The first through groove penetrates the first side surface, the second side surface, and the top surface of the identification body, and divides the top of the identification body into a plurality of second protrusions; The first identification element is disposed on the top surface of the extended identification flange, and the distribution position of the first identification element on the extended identification flange corresponds to the position where the first through groove penetrates the first side or the second side.

25. The feature scanning bar of any of claims 1-7, wherein, The feature recognition elements include: The second through groove is formed on the top surface of the identification body and is arranged along the axial direction of the identification body.

26. The feature scanning rod according to any one of claims 1-7, characterized in that, The feature recognition elements include: One or more third protrusions are disposed on the top surface of the identification body; When multiple third protrusions are provided, the multiple third protrusions are distributed at intervals along the axial direction of the identification body on the top surface of the identification body, and the interval between each two adjacent third protrusions is not exactly the same.

27. The feature scanning rod according to claim 1, characterized in that, The identification body has a first end and a second end. The identification body is connected to the connector through the second end. The width of the first end is smaller than the width of the middle part of the identification body and the width of the second end. The first end is a pointed cylinder or a pyramid, and the second end is a cylinder or a cuboid. Alternatively, the angle between the axis of the connector and the axis of the identification body is 70-100°.

28. A feature scanning lever kit, characterized in that, Includes multiple feature scanning rods as described in any one of claims 1-27, The feature parameters of the extended identification flanges on each of the aforementioned feature scanning bars are not entirely the same; And / or, the feature recognition elements on each of the aforementioned feature scanning bars are not completely identical; And / or, the feature parameters of the recognition body of each feature scanning bar are not completely the same; The feature parameters include at least one of length, width, height, angle, and radian.

29. The feature scanning lever kit according to claim 28, characterized in that, The identification body has a first end and a second end. The identification body is connected to the connector through the second end. The feature parameters of the first end of each feature scanning rod are different so that the oral scanner can identify the identity of the feature scanning rod through the first end during scanning.

30. An oral scanning system, comprising: include: An oral scanner and one or more feature scanning rods as described in any one of claims 1-27.

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