An intraoral scanning wand assembly and scanning instrument system
By designing a combined scanning area with multiple intraoral scanning rod components, and employing a boss or groove structure and a matte surface, the problem of inaccurate information acquisition by existing scanning devices is solved, achieving efficient and accurate oral scanning results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU SIFARY MEDICAL TECH CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-19
AI Technical Summary
The limited number of surface feature points on the existing intraoral scanning rods leads to inaccurate information acquisition by the scanning equipment, especially in edentulous cases where the scanning data is discontinuous, affecting the accurate fabrication of restorations and causing excessively long scanning times, thus reducing work efficiency.
Design an intraoral scanning rod assembly, including multiple intraoral scanning rods, with the scanning area being spliced to form a combined scanning area. It adopts a boss or groove structure, and is set with polygonal shape and matte surface. Combined with different sizes and marking holes, it improves scanning efficiency and accuracy.
By combining scanning areas to scan multiple intraoral scanning rods at once, the efficiency and accuracy of oral cavity scanning are improved, scanning time is reduced, and the user experience is enhanced.
Smart Images
Figure CN224370008U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and more specifically, to an intraoral scanning rod assembly and scanning instrument system. Background Technology
[0002] In the field of modern dental implant restoration, scanning rods play a crucial role. They are primarily used in the digital implantation process to accurately acquire the three-dimensional positional information of the implant, which is an indispensable data foundation for the subsequent fabrication of personalized abutments and crowns. However, existing scanning rod technology has many shortcomings and deficiencies, severely limiting the efficiency and accuracy of dental implant restoration.
[0003] However, existing intraoral scanning rods have limited surface feature points. During scanning, the scanning device needs to identify these feature points to determine crucial information such as location and depth. Due to the limited number of feature points, the scanning device is often inaccurate in acquiring this information, leading to deviations and affecting the precise fabrication of subsequent restorations. This problem is even more pronounced in edentulous cases. In edentulous patients, implants are more dispersed, making it difficult for traditional scanning rods to handle this situation. The irregularity of implant distribution easily leads to discontinuous scanning data, significantly reducing scanning accuracy. This not only affects the fit of the restoration but may also lead to implant failure, causing unnecessary suffering and financial burden for the patient.
[0004] Finally, traditional scanning probes require scanning a large area to acquire accurate information. This not only increases the amount of data but also prolongs the scanning time. In clinical practice, longer scanning times not only reduce work efficiency but also increase patient discomfort, especially for patients who have difficulty maintaining an open-mouth posture for extended periods. In conclusion, existing intraoral scanning technologies have low efficiency and accuracy, which is detrimental to user experience and industry development. Utility Model Content
[0005] The technical problem to be solved by the embodiments of this application is how to improve the intraoral scanning efficiency of oral implants.
[0006] To address the aforementioned technical problems, this application provides an intraoral scanning rod assembly, employing the following technical solution:
[0007] An intraoral scanning rod assembly includes multiple intraoral scanning rods, one end of which is provided with a scanning area for scanning, and the scanning areas of the multiple intraoral scanning rods are spliced together to form a combined scanning area.
[0008] Furthermore, the intraoral scanning rod includes: a fixing part, a scanning part, and a connecting part;
[0009] The fixing part and the scanning part are respectively disposed at both ends of the connecting part, and the end of the connecting part where the scanning part is disposed gradually converges and extends outward to form the scanning area.
[0010] Furthermore, the scanning part is a boss that protrudes upward on the surface of the connecting part, or a groove that is recessed downward on the surface of the connecting part, and the shape of the protruding boss and the shape of the recessed groove are polygonal.
[0011] Furthermore, at least one marking hole is provided on the boss or the groove.
[0012] Furthermore, the boss includes a top surface and a first sidewall, the edge of the top surface forms a first polygon, the connection between the first sidewall and the connecting plane forms a second polygon, and the area of the first polygon is smaller than the area of the second polygon.
[0013] Alternatively, the groove includes a groove bottom and a second sidewall, the edge of the groove bottom forms a third polygon, and the connection between the second sidewall and the connecting plane forms a fourth polygon, the area of the third polygon being smaller than the area of the fourth polygon.
[0014] Furthermore, the first polygon and the second polygon, or the third polygon and the fourth polygon, are non-rotationally symmetric polygons.
[0015] Furthermore, the surfaces of the boss and the groove are matte.
[0016] Furthermore, the intraoral scanning rod includes at least a first size type, a second size type, and a third size type, and the scanning part shape and connecting part length of the first size type, the second size type, and the third size type are different.
[0017] Furthermore, at least one marking hole is provided on the boss or the groove. The number of marking holes on the boss or groove of the same size and type of intraoral scanning rod is different, and the number of polygonal sides on the boss or groove of the same size and type of intraoral scanning rod is different.
[0018] Furthermore, the connecting portion includes a first surface and a second surface disposed opposite to each other, the fixing portion and the scanning portion are respectively disposed on the first surface and the second surface, the fixing portion is disposed in the form of a hollow cylinder extending outward from the first surface, and at the end of the connecting portion extending outward in a conical shape, the extended surfaces of the first surface and the second surface intersect to form an included angle.
[0019] To address the aforementioned technical problems, this application also provides a scanning device system, including a scanning head and a plurality of intraoral scanning rod assemblies as described in any of the above claims. The intraoral scanning rod assembly includes a plurality of intraoral scanning rods, the fixing part of each intraoral scanning rod is fixed at a different position inside the oral cavity, and the connecting part of each intraoral scanning rod has a tapered end that fits together to form a combined scanning area. The scanning head and the combined scanning area are positioned correspondingly to scan the combined scanning area to obtain scanning data.
[0020] Compared with the prior art, the embodiments of this application have the following main advantages:
[0021] This embodiment uses an intraoral scanning rod assembly comprising several intraoral scanning rods. Each intraoral scanning rod has a scanning area at one end, and the intraoral scanning rods are spliced together with the scanning area to form a combined scanning area. Thus, by performing a single scan on the combined scanning area, the scanning work of several intraoral scanning rods can be achieved simultaneously, greatly improving the scanning efficiency and accuracy of oral cavity scanning. Attached Figure Description
[0022] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the intraoral scanning rod assembly and scanning head during scanning, according to an embodiment of this application.
[0024] Figure 2 This is a top and side view schematic diagram of the L-sized pentagonal scanning bar of the intraoral scanning bar in an embodiment of this application;
[0025] Figure 3 This is a top and side view schematic diagram of another embodiment of the L-sized pentagonal scanning bar of the intraoral scanning bar in this application;
[0026] Figure 4 This is a schematic diagram of the scanning rod structure when the scanning part of the intraoral scanning rod is a boss, according to an embodiment of this application.
[0027] Figure 5 This is a schematic diagram of the scanning rod structure when the scanning part of the intraoral scanning rod is a groove, according to an embodiment of this application.
[0028] Figure 6 This is a schematic diagram showing the structure of the S-sized hexagonal scanning bar with different numbers of marking holes in an embodiment of this application;
[0029] Figure 7 This is a schematic diagram showing the structure of the M-sized hexagonal scanning rod with different numbers of marking holes in an embodiment of this application;
[0030] Figure 8 This is a schematic diagram showing the structure of the L-sized hexagonal scanning rod with different numbers of marking holes in an embodiment of this application;
[0031] Reference numerals: 1. Intraoral scanning rod; 2. Scanning head; a. Scannable area; B. Combined scanning area; A. Fixing part; 11. Scanning part; 12. Connecting part; 13. Boss; 121. Groove; 122. Marking hole; 123. Auxiliary marking hole; 124. Top surface; 121a. First side wall; 121b. Groove bottom; 122a. Second side wall; 122b. First surface; 131. Second surface; 132. First polygon C1; C2. First polygon C3; C4. Included angle D. Detailed Implementation
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.
[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0034] refer to Figure 1 The intraoral scanning rod assembly of this application includes a plurality of intraoral scanning rods 1, one end of which is provided with a scanning area a for scanning, and the scanning areas a of the plurality of intraoral scanning rods 1 are spliced together to form a combined scanning area A.
[0035] In this embodiment, the intraoral scanning rods 1 are arranged in groups, with each group including at least four intraoral scanning rods 1. The four intraoral scanning rods 1 are respectively connected and fixed to different implants (not shown in the figure) in the oral cavity by corresponding fixing parts 11. At the same time, the four intraoral scanning rods 1 are converged by scanning areas a on corresponding scanning parts 12, so that the four scanning areas a are concentrated close to the same position area, which forms a combined scanning area A. When the intraoral scanning rods 1 are installed in the oral cavity, the combined scanning area A corresponds to the scannable area B of the scanning head 2. Specifically, the combined scanning area A must be located in the scannable area B so that the scanning head 2 can effectively scan the intraoral scanning rods 1 corresponding to the combined scanning area A. When the four intraoral scanning rods 1 are fixed in the oral cavity, the scanning head 2 scans and identifies the intraoral scanning rods 1 in the combined scanning area A to obtain the three-dimensional information of the implants.
[0036] This embodiment sets up an intraoral scanning rod assembly including multiple intraoral scanning rods 1, sets one end of the intraoral scanning rod 1 as a scanning area a for scanning, and splices the scanning areas of multiple intraoral scanning rods 1 together to form a combined scanning area A, so that the scanning head 2 can scan multiple intraoral scanning rods 1 at one time during scanning, thereby greatly improving the scanning efficiency and accuracy of intraoral scanning.
[0037] In another optional embodiment of this example, reference is made to... Figure 2 The intraoral scanning rod 1 includes: a fixing part 11, a scanning part 12, and a connecting part 13;
[0038] The fixing part 11 and the scanning part 12 are respectively disposed at both ends of the connecting part 13. The end of the connecting part 13 on which the scanning part 12 is disposed gradually converges and extends outward to form the scanning area a.
[0039] In this embodiment, the connecting part 13 is provided with a tapered shape at one end of the scanning part 12, which gradually tapers outwards. This shape prevents collisions when multiple intraoral scanning rods 1 are brought together, resulting in a smaller scanning area a between the intraoral scanning rods 1 and improved scanning efficiency. Specifically, when the intraoral scanning rods 1 are fixed inside the oral cavity, the angle between adjacent intraoral scanning rods 1 is less than 90°. The number of intraoral scanning rods 1 can be adjusted according to actual needs. For example, if the number of intraoral scanning rods 1 is set to 6, the angle between adjacent intraoral scanning rods 1 is less than 60°.
[0040] In this embodiment, an intraoral scanning rod is provided, including a fixing part 11, a scanning part 12, and a connecting part 13. The fixing part 11 and the scanning part 12 are respectively set at both ends of the connecting part 13. The intraoral scanning rod 1 is connected and fixed by the fixing part 11 and the implant (not shown in the figure). The end of the connecting part 13 where the scanning part 12 is provided extends outward in a conical shape to form a scanning area a. The scanning area a corresponds to the setting position of the scanning head 2, thereby facilitating the scanning of the intraoral scanning rod 1.
[0041] In another optional embodiment of this example, reference is made to... Figure 4 and Figure 5 The scanning part 12 is a boss 121 that protrudes upward on the surface of the connecting part 13, or a groove 122 that is recessed downward on the surface of the connecting part 13. The protruding shape of the boss 121 and the recessed shape of the groove 122 are polygonal.
[0042] In this embodiment, the scanning portion 12 of different intraoral scanning rods 1 can be a boss 121 or a groove 122. The positions of the boss 121 and the groove 122 on the intraoral scanning rod 1 can be corresponding or not. Similarly, the height of the boss 121 and the depth of the groove 122 on the plane of the connecting portion 13 can be corresponding or not. In this embodiment, the positions of the boss 121 and the groove 122 on the intraoral scanning rod 1 are corresponding, and the depth of the groove 122 is half the height of the boss 121. The shape of the boss 121 and the shape of the groove 122 are polygonal with more than three sides on the plane of the connecting portion 13. In this embodiment, the scanning portion 12 of the intraoral scanning rod 1 preferably has a boss 121 structure, and secondarily a groove 122 structure.
[0043] In this embodiment, the scanning part 12 is configured as a boss 121 that protrudes upward on the surface of the connecting part 13, or a groove 122 that is recessed downward on the surface of the connecting part 13. The shape of the boss 121 and the shape of the groove 122 are set as polygons, thereby effectively facilitating the scanning head 2 to identify the position of the intraoral scanning rod 1 in the scanning area a.
[0044] In another optional embodiment of this example, reference is made to... Figure 4 and Figure 5 The boss 121 includes a top surface 121a and a first sidewall 121b. The edge of the top surface 121a forms a first polygon C1, and the connection between the first sidewall 121b and the plane of the connecting part 13 forms a second polygon C2. The area of the first polygon C1 is smaller than the area of the second polygon C2.
[0045] Alternatively, the groove 122 includes a groove bottom 122a and a second sidewall 122b, the edge of the groove bottom 122a forms a third polygon C3, and the connection between the second sidewall 122b and the plane of the connecting part 13 forms a fourth polygon C4, the area of the third polygon C3 is smaller than the area of the fourth polygon C4.
[0046] In this embodiment, the first polygon C1 and the second polygon C2 have the same shape. The top surface 121a of the boss 121 and the connecting part 13 are connected by an inclined first sidewall 121b. The first polygon C1 is a proportionally reduced version of the second polygon C2, and the areas of the first polygon C1 and the second polygon C2 are proportionally related. In specific implementation, the area of the first polygon C1 is 0.6 times the area of the second polygon C2, which can be adjusted according to the actual situation. The third polygon C3 and the fourth polygon C4 have the same shape. The bottom 122a of the groove 122 and the connecting part 13 are connected by an inclined second sidewall 122b. The third polygon C3 is a proportionally reduced version of the fourth polygon C4, and the areas of the third polygon C3 and the fourth polygon C4 are proportionally related. In specific implementation, the area of the third polygon C3 is 0.6 times the area of the fourth polygon C4, which can be adjusted according to the actual situation.
[0047] This embodiment effectively avoids side scanning by setting the first polygon C1 and the second polygon C2 formed on the boss 121 as polygons with corresponding shapes, and making the area of the first polygon C1 smaller than the area of the second polygon C2, and by setting the third polygon C3 and the fourth polygon C4 as polygons with corresponding shapes, and making the area of the third polygon C3 smaller than the area of the fourth polygon C4, thereby reducing the amount of scanning data and improving scanning efficiency.
[0048] In another optional embodiment of this example, reference is made to... Figure 2 and Figure 3 The first polygon C1 and the second polygon C2 or the third polygon C3 and the fourth polygon C4 are non-rotationally symmetric polygons.
[0049] In this embodiment, the first polygon C1, the second polygon C2, the third polygon C3, and the fourth polygon C4 each include at least three different polygons. These three different polygons can be quadrilaterals, pentagons, hexagons, etc., and the number of sides of the polygons can be adjusted accordingly based on actual conditions. The polygons formed by the protruding portion of the boss 121 or the recessed portion of the groove 122 on the plane of the connecting portion 13 can be non-rotationally symmetric quadrilaterals, non-rotationally symmetric pentagons, non-rotationally symmetric hexagons, etc.
[0050] In this embodiment, by setting the first polygon C1 and the second polygon C2 on the boss 121 or the third polygon C3 and the fourth polygon C4 on the groove 122 as non-rotationally symmetric polygons, the rotation direction can be effectively and conveniently identified when the position of the intraoral scanning rod 1 moves, thereby improving the accuracy of scanning recognition.
[0051] In another optional embodiment of this example, the surface of the boss 121 and the surface of the groove 122 are matte.
[0052] In this embodiment, a matte finish can be achieved by applying a matte treatment to the surfaces of the boss 121 and the groove 122. Matte treatment is a process that uses physical or chemical methods to remove the gloss from the surface of an object, resulting in a soft, low-reflection effect. Matte treatment methods include: physical polishing: using sandpaper, sandblasting (such as glass beads or corundum), or abrasive wheels to mechanically treat the surface, creating fine textured surfaces that scatter light and reduce reflection; chemical etching: using chemical reagents such as acids or alkalis to corrode the surface, creating a uniform matte texture; coating treatment: matte paint / coating: paint or powder coating with added matting agents (such as silica), which forms a non-reflective surface after drying; electrophoretic coating: depositing a matte coating through electrochemical deposition; plastic injection molding: performing texturing (texture etching) on the inner wall of the plastic mold, resulting in a matte finish on the molded plastic part; and laser engraving: using a laser to create fine textures on the surface. In this embodiment, a coating treatment is used to achieve the matte finish on the surfaces of the boss 121 and the groove 122.
[0053] In this embodiment, by setting the surfaces of the boss 121 and the groove 122 to matte surfaces, the non-reflective effect of the surfaces is effectively improved, so as to facilitate identification scanning.
[0054] In another optional embodiment of this embodiment, the intraoral scanning rod 1 includes at least a first size type S, a second size type M, and a third size type L, wherein the scanning part 12 of the first size type S, the second size type M, and the third size type L have different shapes and connecting parts 13 lengths.
[0055] In this embodiment, reference Figures 6 to 8 The intraoral scanning rod 1 includes three different sizes: a first size type S, a second size type M, and a third size type L. The shape of the scanning part 12 and the length of the connecting part 13 are different for each size of the intraoral scanning rod 1. Different sizes of intraoral scanning rods 1 can be combined, such as two L sizes and two M sizes. The size of the intraoral scanning rod 1 can be adjusted according to the actual situation.
[0056] This embodiment sets the intraoral scanning rod 1 to include at least a first size type S, a second size type M, and a third size type L, and the scanning part 12 and the connecting part 13 of the first size type S, the second size type M, and the third size type L are different in shape and length, thereby effectively facilitating the flexible combination of the intraoral scanning rod 1 according to different oral cavity sizes, so as to improve the flexibility and adaptability during scanning.
[0057] In another optional embodiment of this embodiment, at least one marking hole 123 is provided on the boss 121 or the groove 122. The number of marking holes 123 on the boss 121 or the groove 122 of the same size and type of intraoral scanning rod 1 is different, and the number of polygonal sides of the boss 121 or the groove 122 of the same size and type of intraoral scanning rod 1 is different.
[0058] In this embodiment, reference Figures 6-8 Each size type of intraoral scanning bar 1 includes at least three types with three different numbers of marking holes 123, namely 0, 1, and 2. For example, the intraoral scanning bar 1 of the first size type S includes an S-size scanning bar with 0, 1, and 2 marking holes 123; the intraoral scanning bar 1 of the second size type M includes an M-size scanning bar with 0, 1, and 2 marking holes 123; and the intraoral scanning bar 1 of the third size type L includes an L-size scanning bar with 0, 1, and 2 marking holes 123. The number of marking holes 123 can be adjusted according to actual conditions, and the ID number between multiple intraoral scanning bars 1 of the same size type can be identified by different numbers of marking holes 123. In specific implementation, the number of marking holes 123 is different for each of the protrusions 121 or the grooves 122, and / or the number of polygonal sides of each of the protrusions 121 or the grooves 122 is different. Meanwhile, the intraoral scanning rod 1 of the same size type includes at least three polygons with different numbers of sides: quadrilateral, pentagonal, and hexagonal. For example, the intraoral scanning rod 1 of the first size type S includes S-sized scanning rods with 4, 5, and 6 polygonal sides respectively; the intraoral scanning rod 1 of the second size type M includes M-sized scanning rods with 4, 5, and 6 polygonal sides respectively; and the intraoral scanning rod 1 of the third size type L includes L-sized scanning rods with 4, 5, and 6 polygonal sides respectively. In this embodiment, auxiliary marking holes 124 corresponding to the number of marking holes 123 can also be provided on the connecting part 13, so that the intraoral scanning rod 1 can be distinguished by scanning the auxiliary marking holes 124 when the marking holes 123 are not clearly scanned.
[0059] This embodiment further facilitates the effective differentiation of intraoral scanning rods 1 of different sizes during scanning by setting different numbers of marking holes 123 on the protrusions 121 or grooves 122 of different sizes, and different numbers of polygonal sides on the protrusions 121 or grooves 122 of different sizes, thereby improving the efficiency of scanning recognition.
[0060] In this embodiment, reference Figures 2 to 8 The marking hole 123 is circular, and the number of marking holes 123 can be set according to the actual situation. In this embodiment, the number of marking holes 123 on the boss 121 or the groove 122 is at least 1 and at most 3, or none at all. The connecting part 13 includes a first surface 131 and a second surface 132 arranged opposite to each other. The fixing part 11 and the scanning part 12 are respectively disposed on the first surface 131 and the second surface 132. The fixing part 11 is a hollow cylinder extending outward from the first surface 131. At the end of the connecting part 13 that extends outward in a conical shape, the extended surfaces of the first surface 131 and the second surface 132 intersect to form an included angle.
[0061] In this embodiment, the fixing part 11 is disposed on the side of the connecting part 13 facing away from the scanning part 12. Specifically, taking the intraoral scanning rod 1 installed in the oral cavity for scanning as an example, the fixing part 11 is disposed on the first surface 131 facing downward on the connecting part 13, and the scanning part 12 is disposed on the second surface 132 facing upward on the connecting part 13. The fixing part 11 is formed by extending downward from the first surface 131 of the connecting part 13. Specifically, the outer side of the fixing part 11 is cylindrical, the interior of the fixing part 11 is hollow, and a hollow cylinder is also disposed on the inner side of the fixing part 11. The intraoral scanning rod 1 is connected and fixed to the implant in the oral cavity by the fixing part 11 with this structure. The included angle D formed by the first surface 131 and the second surface 132 is located between the position of the scanning part 12 and the position of the fixing part 11. This included angle D has a predetermined angle. In this embodiment, the included angle D of the first surface 131 and the second surface 132 of the connecting part 13 is set to 165 degrees, which can be adjusted accordingly according to the actual situation.
[0062] This embodiment incorporates a connecting portion 13 comprising a first surface 131 and a second surface 132 arranged opposite to each other. A fixing portion 11 and a scanning portion 12 are respectively positioned on the first surface 131 and the second surface 132. The fixing portion 11 is configured as a hollow cylinder extending outward from the first surface 131, facilitating the connection between the intraoral scanning rod 1 and the implant in the oral cavity via the fixing portion 11, thereby improving the positional stability of the intraoral scanning rod 1 during scanning. The extended surfaces of the first surface 131 and the second surface 132 intersect to form an included angle D. This effectively reduces the height of the intraoral scanning rod 1 when fixed, thereby reducing the height of the scanning area a, facilitating scanning by the scanning head 2.
[0063] This application embodiment also provides a scanning device system, including a scanning head 2 and an intraoral scanning rod assembly as described in any of the above claims. The intraoral scanning rod assembly includes a plurality of intraoral scanning rods 1. The fixing part 11 of each intraoral scanning rod 1 is fixed at a different position inside the oral cavity. The connecting part 13 of each intraoral scanning rod 1 is tapered at one end to form a combined scanning area A. The scanning head 2 and the combined scanning area A are positioned correspondingly to scan the combined scanning area A to obtain scanning data.
[0064] This embodiment, by employing a scanning instrument with an intraoral scanning rod as described in any of the above embodiments, can effectively improve the efficiency of oral cavity scanning.
[0065] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.
Claims
1. An intraoral scanning wand assembly, comprising: The intraoral scanning rod assembly includes multiple intraoral scanning rods, one end of which is provided with a scanning area for scanning. The scanning areas of the multiple intraoral scanning rods are spliced together to form a combined scanning area.
2. The intraoral scanning pole assembly of claim 1, wherein, The intraoral scanning rod includes: a fixing part, a scanning part, and a connecting part; The fixing part and the scanning part are respectively disposed at both ends of the connecting part, and the end of the connecting part where the scanning part is disposed gradually converges and extends outward to form the scanning area.
3. The intraoral scanning pole assembly of claim 2, wherein, The scanning part is a boss that protrudes upward on the surface of the connecting part, or a groove that is recessed downward on the surface of the connecting part. The shape of the protruding boss and the shape of the recessed groove are polygonal.
4. The intraoral scanning pole assembly of claim 3, wherein, The boss includes a top surface and a first sidewall. The edge of the top surface forms a first polygon, and the connection between the first sidewall and the connecting plane forms a second polygon. The area of the first polygon is smaller than the area of the second polygon. Alternatively, the groove includes a groove bottom and a second sidewall, the edge of the groove bottom forms a third polygon, and the connection between the second sidewall and the connecting plane forms a fourth polygon, the area of the third polygon being smaller than the area of the fourth polygon.
5. The intraoral scanning pole assembly of claim 4, wherein, The first polygon and the second polygon, or the third polygon and the fourth polygon, are non-rotationally symmetric polygons.
6. The intraoral scanning rod assembly according to claim 5, characterized in that, The surfaces of the boss and the groove are matte.
7. The intraoral scanning rod assembly according to claim 6, characterized in that, The intraoral scanning rod includes at least a first size type, a second size type, and a third size type, and the scanning part shape and connecting part length of the first size type, the second size type, and the third size type are different.
8. The intraoral scanning pole assembly of claim 7, wherein, At least one marking hole is provided on the boss or the groove. The number of marking holes on the boss or the groove of the same size and type of intraoral scanning rod is different, and the number of polygonal sides on the boss or the groove of the same size and type of intraoral scanning rod is different.
9. The intraoral scanning bar assembly of claim 2, wherein, The connecting part includes a first surface and a second surface arranged opposite to each other. The fixing part and the scanning part are respectively disposed on the first surface and the second surface. The fixing part is a hollow cylinder extending outward from the first surface. At the end of the connecting part that extends outward in a conical shape, the extended surfaces of the first surface and the second surface intersect to form an included angle.
10. A scanning instrument system characterized by, The scanning device includes a scanning head and an intraoral scanning rod assembly as described in any one of claims 2 to 9. The intraoral scanning rod assembly includes a plurality of intraoral scanning rods. The fixing part of each intraoral scanning rod is fixed at a different position inside the oral cavity. The connecting part of each intraoral scanning rod has a tapered end that fits together to form a combined scanning area. The scanning head and the combined scanning area are positioned correspondingly to scan the combined scanning area to obtain scanning data.