Anchorage screw apparatus having multiple registration points and oral implant navigation registration assembly

Abstract

An anchorage screw apparatus having multiple registration points and an oral implant navigation registration assembly. The anchorage screw apparatus comprises an anchorage screw (1) and a base platform (2). The anchorage screw (1) is suitable for being fixed to the oral jawbone of a patient. The base platform (2) is detachably connected to the anchorage screw (1). One side surface of the base platform (2) is formed as a beveled surface (23). Registration points (24) are arranged on a top-end surface (21) and the beveled surface (23) of the base platform, respectively.

Description

Orthopedic screw device with multiple registration points and dental implant navigation registration component

[0001] This application claims priority to Chinese Patent Application No. 2024218645185, filed on August 2, 2024, entitled “Anchorage Screw Device with Multiple Registration Points and Oral Implant Navigation Registration Component”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of oral medical device technology, and in particular to an anchorage screw device with multiple registration points and an oral implant navigation registration component. Background Technology

[0003] Dental implant surgery requires a series of precise procedures performed inside the oral cavity under local anesthesia. Due to the non-direct visualization and confined space of the oral cavity, the complication rate of dental implant surgery is relatively high. In recent years, research and development related to dental implant navigation have been widely carried out both domestically and internationally. With the development of computer technology, surgical navigation, with its advantages of precision, flexibility, and minimally invasiveness, has brought revolutionary changes to surgery, leading modern medicine from "intuitive medicine" to "precision medicine."

[0004] The navigation-guided implantation scheme in related technologies uses an implant guide for navigation-guided implantation. During the navigation-guided implantation surgery, the guide is used to fix the visual marker connectors and provide intraoral registration points for easy location determination. The specific operation procedure of the implant guide surgery is as follows: First, the patient's preoperative CBCT data and intraoral scan data are acquired. Second, the implant and guide plan are designed and confirmed. Finally, the implant guide data is generated and 3D printed. The doctor performs trial fitting and mold modification on the patient based on the 3D printed implant guide. This step takes a long time because there may be cases of trial fitting failure during the patient's trial fitting, which requires the implant guide to be re-3D printed. Therefore, this process is a process of repeated trials. The implantation operation can only be performed after the trial fitting is successful.

[0005] Furthermore, guided implantation has its drawbacks. For example, in patients with multiple missing teeth or even edentulous patients, the traditional dental implant guide is prone to displacement due to the lack of a fixed position, making it difficult to achieve high implantation precision and thus making it impossible to perform the implantation surgery. Summary of the Invention

[0006] This application provides an anchorage screw device with multiple registration points and an oral implant navigation registration component to solve the defects of navigation implantation surgery using implant guides in related technologies, thereby achieving convenient and quick navigation implantation surgery without the need for printing 3D guides and greatly shortening the preoperative preparation time.

[0007] This application provides an anchorage screw device with multiple registration points, including an anchorage screw and an abutment, wherein the anchorage screw is adapted to be fixed to the patient's oral jawbone; the abutment is detachably connected to the anchorage screw, the abutment includes a top end face, a bottom end face and multiple side faces, one of which is formed as a chamfered surface, and registration points are respectively provided on the top end face and the chamfered surface.

[0008] In some embodiments, at least two registration points are provided on the top end face and the beveled surface respectively; the at least two registration points on the top end face are arranged asymmetrically with respect to the center line of the top end face; the at least two registration points on the beveled surface are arranged asymmetrically with respect to the center line of the beveled surface.

[0009] In some embodiments, the registration point is a hemispherical concave structure or a cone-shaped cavity structure.

[0010] In some embodiments, the bottom end face of the base has a receiving cavity for accommodating the head of the anchoring nail, and the top end face of the base has a first connecting hole, which communicates with the receiving cavity and forms a connecting hole at the connection point. The diameter of the connecting hole is smaller than the diameter of the first connecting hole and smaller than the inner diameter of the receiving cavity. The head of the anchoring nail has a second connecting hole, which is connected to the second connecting hole of the anchoring nail head by a fastening screw placed in the first connecting hole.

[0011] In some embodiments, the base is a titanium alloy base, and its surface is sandblasted to form a rough sandblasted layer.

[0012] This application embodiment also provides an oral implant navigation registration component, including the anchorage screw device with multiple registration points as described in any one of the above claims, and further including a connecting bracket, a visual marker frame, and a probe tool. One end of the connecting bracket is adapted to be fixed to the patient's oral jawbone, and the other end of the connecting bracket is connected to the visual marker frame. The visual marker frame is provided with a first visual marker point for establishing a surgical area coordinate system through the first visual marker point. The probe tool acts on the registration points on the anchorage screw device with multiple registration points to obtain the corresponding coordinates of the registration points in the surgical area coordinate system.

[0013] In some embodiments, the connecting bracket is a connecting rod, and the connecting rod has a curved portion in the middle to form a shape suitable for avoiding the bending of the patient's lips; one end of the connecting bracket is provided with a transverse connecting hole perpendicular to the connecting bracket, and the visual marker is inserted and fixed to either end of the transverse connecting hole.

[0014] In some embodiments, the other end of the connecting bracket is provided with a mounting bracket, the mounting bracket forming an arc that matches the dental arch, the mounting bracket having mounting holes, and fixing pins disposed in the mounting holes to fix one end of the connecting bracket to the patient's oral jawbone by means of the fixing pins; the mounting bracket has at least two mounting holes.

[0015] In some embodiments, the visual marker frame includes a straight connecting rod and a marker frame. One end of the straight connecting rod is connected to a transverse connecting hole of the connecting bracket, and the other end is connected to the marker frame. A plurality of first visual marker points are provided on the marker frame.

[0016] In some embodiments, the detection tool includes a marking area and a detection area, the marking area being provided with a plurality of second visual markers; the detection area being provided with a detection head, the detection head being adapted to the shape of the registration point, and suitable for the detection head to be fitted with the registration point.

[0017] The anchorage screw device with multiple registration points and the oral implant navigation registration component provided in this application embodiment can be used to replace the traditional surgical guide implantation method by using an anchorage screw device with multiple registration points and a connecting bracket. This method is more convenient and faster, and eliminates the need to print 3D surgical guides, greatly shortening the preoperative preparation time. Furthermore, the anchorage screw device is directly fixed to the patient's jawbone, reducing assembly errors introduced by intermediate transitions and providing a foundation for subsequent precise navigation surgery. Registration points are set on both the top end face and the oblique surface of the abutment. Whether the anchorage screw device is inserted at the ridge or buccal side, there are corresponding registration points for marking and registration. This allows for the connection of anchorage screw devices in different directions and angles. The specific connection method can be selected according to the patient's bone volume, allowing the abutment to play a greater role and taking into account different patients' bone volume conditions, which is more conducive to the accuracy of registration. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the structure of the anchor nail device with multiple registration points provided in the embodiment of this application.

[0020] Figure 2 is a schematic diagram of the base provided in an embodiment of this application.

[0021] Figure 3 is a front view of the base provided in an embodiment of this application.

[0022] Figure 4 is a schematic diagram of the AA cross-sectional structure of Figure 3.

[0023] Figure 5 is a schematic diagram of the anchorage nail provided in the embodiment of this application.

[0024] Figure 6 is a schematic diagram of the installation of the anchorage screw device with multiple registration points at the top of the tooth ridge according to an embodiment of this application.

[0025] Figure 7 is a schematic diagram of the buccal mounting of the anchorage nail device with multiple registration points provided in the embodiment of this application.

[0026] Figure 8 is a schematic diagram of the connection structure of the oral implant navigation registration component provided in an embodiment of this application.

[0027] Figure 9 is one of the structural schematic diagrams of the connecting bracket provided in the embodiments of this application.

[0028] Figure 10 is a second schematic diagram of the connecting bracket provided in the embodiment of this application.

[0029] Figure 11 is a schematic diagram of the structure of the detection tool provided in the embodiment of this application.

[0030] Reference numerals: 1. Support nail; 11. Second connecting hole; 2. Base; 21. Top end face; 22. Bottom end face; 23. Beveled surface; 24. Registration point; 25. Accommodating cavity; 26. First connecting hole; 27. Communicating hole; 3. Connecting bracket; 31. Mounting bracket; 4. Visual marker frame; 41. First visual marker point; 42. Straight connecting rod; 5. Detection tool; 51. Second visual marker point; 52. Detector head. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] In the description of the embodiments of this application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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 the embodiments of this application.

[0033] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0034] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] The specific structure and working process of the anchorage screw device with multiple registration points and the oral implant navigation registration component according to the embodiments of this application are described below with reference to Figures 1 to 11.

[0037] One embodiment of this application provides an anchorage screw device with multiple registration points. As shown in Figures 1 and 2, it includes an anchorage screw 1 and a base 2. The anchorage screw 1 is adapted to be fixed to the patient's oral jawbone. The base 2 is detachably connected to the anchorage screw 1. The base 2 includes a top end face 21, a bottom end face 22, and multiple side faces, one of which is formed as a chamfered surface 23. Registration points 24 are respectively provided on the top end face 21 and the chamfered surface 23.

[0038] It is understood that the anchorage screw device with multiple registration points in this embodiment is a novel anchorage screw implantation surgical structure. It can be used to replace traditional guide plate implantation with an anchorage screw device with multiple registration points and a connecting bracket. This method is more convenient and faster, and eliminates the need for printing 3D guide plates, significantly shortening preoperative preparation time. Furthermore, the anchorage screw device is directly fixed to the patient's jawbone, reducing assembly errors introduced by intermediate transitions and providing a foundation for subsequent precise navigation surgery. In this embodiment, the abutment 2 is provided with a beveled surface 23. A beveled surface refers to a surface whose angle with the top end face 21 or bottom end face 22 is not a right angle; generally, the angle between the beveled surface 23 and the top end face 21 is greater than 90 degrees. The beveled surface 23 forms a special geometric structure, facilitating CT or oral cavity scanning imaging during implantation surgery. The registration point 24 on the top end face 21 and the oblique cut surface 23, together with a connecting bracket, is directly fixed to the patient's jawbone (see the working process of the oral implant navigation registration component in the following text), and a calibrated probe tool, can perform navigation registration, thereby accurately displaying the surgical area and surgical instruments in the CT image on the navigation display screen in real time, achieving precise navigation.

[0039] It is important to understand that in this embodiment, registration points 24 are respectively provided on the top end face 21 and the bevel face 23. Distributing the registration points 24 on the top end face 21 and the bevel face 23 allows the anchorage screw device to be connected either to the top of the tooth ridge (as shown in Figure 6) or to the buccal side (as shown in Figure 7). Inserting the anchorage screw device from the top of the tooth ridge allows for better compatibility with the patient's bone volume, but may hinder implant placement. Inserting the anchorage screw device from the buccal side allows for better compatibility with the implant position, but the patient's bone volume needs to be considered. In this embodiment, registration points 24 are provided on both the top end face 21 and the bevel face 23. Regardless of whether the anchorage screw device is inserted from the top of the tooth ridge or the buccal side, there is a corresponding registration point 24 for marking and registration. This allows for the connection of anchorage screw devices in different directions and angles. The specific connection method can be selected according to the patient's bone volume, allowing the abutment 2 to play a greater role, taking into account different patients' bone volumes, and improving the accuracy of registration.

[0040] One or more registration points 24 can be provided on the top end face 21 and the beveled surface 23. In some embodiments of the anchoring nail device with multiple registration points in this application, two or more registration points 24 can be provided on each surface of the top end face 21 and the beveled surface 23. As shown in Figure 2, the two registration points 24 on the top end face 21 are arranged asymmetrically with respect to the center line of the top end face 21; the two registration points 24 on the beveled surface 23 are also arranged asymmetrically with respect to the center line of the beveled surface 23. It should be understood that the center line involved here includes the transverse center line and the longitudinal center line on the surface, that is, the two registration points 24 are arranged asymmetrically with respect to both the transverse center line and the longitudinal center line on the surface. In some specific examples, the registration point 24 can be a hemispherical concave structure or a conical cavity structure, which can match different probe structures.

[0041] In the above embodiments, the registration points 24 on the top end face 21 and the oblique cut surface 23 are asymmetrically distributed. It should be understood that if the registration points are symmetrical, the registered model will be offset. However, in this embodiment, the registration points 24 on the plane are asymmetrically distributed, which is beneficial for the registration of the probe tip. Moreover, the multiple registration points 24 asymmetrically distributed on the abutment 2 can complete intraoral registration with very few anchorage nail devices. For example, full-mouth marking registration can be completed with 2 to 3 anchorage nail devices, resulting in a better patient experience.

[0042] Abutment 2 is made of titanium alloy and has a sandblasted surface, which can improve the artifact problem in CT. At the same time, if you want to repair immediately after implantation surgery, you need to perform an oral scan. During the oral scan, the reflective metal is generally not clear. The sandblasting treatment of the surface of abutment 2 can solve this problem.

[0043] In some other embodiments of the anchorage nail device with multiple registration points in this application, as shown in Figures 3 and 4, the bottom end face 22 of the base 2 has a receiving cavity 25 for accommodating the head of the anchorage nail 1, and the top end face 21 of the base 2 has a first connecting hole 26. The first connecting hole 26 communicates with the receiving cavity 25 and forms a connecting hole 27 at the communication point. The diameter of the connecting hole 27 is smaller than the diameter of the first connecting hole 26 and smaller than the inner diameter of the receiving cavity 25. As shown in Figures 1 and 5, the head of the anchorage nail 1 has a second connecting hole 11. The head of the anchorage nail 1 is placed in the receiving cavity 25, and then a fastening screw is screwed through the connecting hole 27 into the second connecting hole 11 in the first connecting hole 26 to connect the head of the anchorage nail 1 to the base 2.

[0044] As can be understood, referring again to Figure 1, the anchorage screw 1 mainly consists of a head, a neck, and a threaded section. The threaded section is placed in the patient's jawbone, and the neck is the transition area connecting the head of the anchorage screw 1 and the threaded section, which can limit the drilling depth. The head of the anchorage screw 1 has an asymmetrical polygonal structure, which facilitates the uniqueness of the quick installation position of the anchorage screw 1 and the abutment 2, ensuring that the position of the abutment 2 in the patient's oral cavity is completely consistent during multiple disassembly and reassembly before and during surgery, providing a basis for precise registration operations in navigation surgery. The second connecting hole 11 in the head of the anchorage screw 1 is used for the anchorage screw 1 and the abutment 2 to be connected by a fastening screw.

[0045] Referring to Figures 1 and 4, the receiving cavity 25 of the base 2 is a polygonal groove that matches the shape of the head of the anchoring nail 1, and it is installed with the anchoring nail 1 through contact fit. The top end face 21 of the base 2 has a first connecting hole 26, which forms a connecting hole 27 with the receiving cavity 25 at the connection point. The connecting hole 27 forms a limiting boss at the connection point between the first connecting hole 26 and the receiving cavity 25. During installation, the anchoring nail 1 is driven in first, and then the base 2 is fitted onto the anchoring nail 1 according to the shape of the receiving cavity 25. Then, a fastening screw is installed in the first connecting hole 26 of the base 2. The head of the fastening screw is located above the connecting hole 27 and is limited by the connecting hole 27. The lower part of the fastening screw passes through the connecting hole 27 and connects with the second connecting hole 11 of the head of the anchoring nail 1 in the receiving cavity 25. In this way, the base 2 and the anchoring nail 1 can be connected and fixed.

[0046] During the navigation-guided implant surgery, an appropriate number of anchorage screws are inserted into the ridge or buccal side of the tooth to fix it to the patient's jawbone, while ensuring the patient's comfort as much as possible. Connector retainer screws are also screwed into the patient's jawbone, fixing the connector to the connector retainer screws. This allows the markers to be fixed to the jawbone via the connector, providing a foundation for the navigation-guided implant surgery. Based on the preoperatively planned implant location, visual markers are used for marking and registration, and the navigation surgery begins.

[0047] In another aspect, this application also provides an oral implant navigation registration component. In some specific embodiments, as shown in Figure 8, the oral implant navigation registration component includes the anchorage screw device with multiple registration points as described in any of the above embodiments, and also includes a connecting bracket 3, a visual marker frame 4, and a probe 5. One end of the connecting bracket 3 is adapted to be fixed to the patient's oral jawbone, and the other end of the connecting bracket 3 is connected to the visual marker frame 4. A first visual marker point 41 is provided on the visual marker frame 4 for establishing the surgical area coordinate system through the first visual marker point 41. The probe 5 acts on the registration point 24 on the anchorage screw device with multiple registration points to obtain the corresponding coordinates of the registration point 24 in the surgical area coordinate system.

[0048] During navigation-guided implant surgery, an appropriate number of anchorage screws are inserted into the patient's jawbone, either at the crest of the dental ridge or buccally, to secure them to the jawbone. One end of the connecting bracket 3 is also fixed to the jawbone with a fixing screw and tightened with a locking nut. The other end of the connecting bracket 3 is connected to a visual marker frame 4, on which a first visual marker 41 is mounted. This allows the first visual marker 41 to be fixed to the jawbone via the connecting bracket 3, providing a foundation for the navigation-guided implant surgery. During registration using the anchorage screws in the navigation surgery, a pre-marked probe tool 5 is required. The probe tool 5 can be an implant handpiece drill bit or a probe, etc.

[0049] In some specific examples, the connecting bracket 3 is a connecting rod with a curved part in the middle to form a shape that avoids the bending of the patient's lips; one end of the connecting bracket 3 is provided with a transverse connecting hole perpendicular to the connecting bracket 3, so that the visual marker 4 can be inserted from both sides. This allows for the selection of a more favorable insertion angle in different surgical areas, ensuring that the visual marker is not obstructed.

[0050] The other end of the connecting bracket 3 may be provided with a mounting hole, through which a fixing pin is installed to connect and fix the end of the connecting bracket 3 to the patient's jawbone. In some embodiments, the end of the connecting bracket 3 may be provided with a mounting frame 31, which can be bent to form a structure suitable for matching installation in the patient's oral cavity. Specifically, the mounting frame 31 can be bent to form an arc that matches the dental arch so that the mounting frame 31 fits against the patient's dental arch when the connecting bracket 3 is fixed. The mounting frame 31 has a mounting hole, in which a fixing pin is placed to fix one end of the connecting bracket 3 to the patient's oral jawbone.

[0051] In some specific examples, the structure of the connecting bracket 3 is shown in Figure 9. One end of the connecting bracket 3 has a mounting hole, and a fixing pin is placed inside the mounting hole, as shown in Figure 6 or Figure 7. Using the connecting bracket 3 shown in Figure 9, the fixing pin is driven in from the top of the tooth ridge, and the fixing pin fixes the end of the connecting bracket 3 to the top of the tooth ridge in the patient's jawbone. In other specific examples, the structure of the connecting bracket 3 is shown in Figure 10. One end of the connecting bracket 3 is connected to a mounting frame 31, which has a mounting hole, and a fixing pin is placed inside the mounting hole, as shown in Figure 8. Using the connecting bracket 3 shown in Figure 10, the fixing pin is driven in from the buccal side to the lingual side, and the fixing pin fixes the end of the connecting bracket 3 to the lateral part of the patient's jawbone. Specifically, the mounting frame 31 forms the same curvature as the patient's dental arch to achieve a close fit. The mounting frame 31 and the connecting bracket 3 can be fixedly connected by welding or other methods. The mounting frame can be made of thin stainless steel, which is easy to bend.

[0052] The mounting hole on the mounting bracket 31, which is connected to one end of the connecting bracket 3, is used to fix it to the patient's jawbone using a fixation pin. One mounting hole on the mounting bracket 31 is sufficient for connection and fixation to the patient's jawbone. In some examples, the mounting bracket 31 may have at least two mounting holes. Referring to Figures 8 and 10, when the patient has osteoporosis, using only one mounting hole for fixation may cause the connection position to shift due to osteoporosis. In this case, a mounting bracket 31 with two or more holes can be used to ensure effective connection and fixation between the connecting bracket 3 and the patient's jawbone.

[0053] It is understood that the specific combination and connection of the connecting bracket 3, the visual marker frame 4, and the support nail device can be seen in Figure 8. The visual marker frame 4 can be designed in various shapes. In some examples, the visual marker frame 4 includes a straight connecting rod 42 and a marking frame, which can be seen in the general grid shape in Figures 6 to 8. One end of the straight connecting rod 42 is connected to the transverse connecting hole of the connecting bracket 3, and the other end is connected to the marking frame. Multiple first visual markers 41 are set on the marking frame, and the distance between the first visual markers 41 is dispersed. The detection tool 5 can be a planting mobile phone drill bit or probe, etc. Specifically, the detection tool 5 shown in Figure 11 can be used as the detection tool. The detection tool 5 includes a marking area and a detection area. The marking area is provided with multiple second visual markers 51, which are dispersed among each other. The detection area is provided with a detection head 52, which is adapted to the shape of the registration point 24 and is suitable for the detection head 52 to be fitted with the registration point 24. In some specific examples, the registration point 24 is a concave cone-shaped structure, and the probe head 52 is a cone-shaped tip. During detection, the cone-shaped tip of the probe is brought into contact with the cone-shaped cone-shaped structure of the anchorage nail in a vertical direction. In other examples, the shape of the probe head 52 is a convex circle corresponding to the hemispherical concave structure of the registration point 24 on the anchorage nail device. During detection, the convex circle and the hemispherical concave structure need to be completely fitted so that the center detection point of the probe head 52 is aligned with the center point of the hemispherical concave of the registration point 24. After determining the positions of the registration points 24 on multiple anchorage nail devices one by one, the conversion relationship between the CT virtual space and the actual surgical area can be found. In this way, the patient's surgical area and surgical instruments can be accurately and in real time displayed in the CT image on the navigation display screen, thereby achieving precise navigation.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A anchorage pin device with multiple registration points, comprising: an anchorage pin (1) adapted to be fixed to the oral and maxillofacial bone of a patient; a base (2) detachably connected to the anchorage pin (1), the base (2) comprising a top end surface (21), a bottom end surface (22) and multiple side surfaces, one of which is formed as a bevel surface (23), the top end surface (21) and the bevel surface (23) are respectively provided with registration points (24), and the top end surface (21) and / or the bevel surface (23) has at least two registration points (24).

2. The anchorage pin device with multiple registration points of claim 1, wherein, The at least two registration points (24) on the top end surface (21) are arranged asymmetrically on the top end surface (21) relative to the center line of the top end surface (21); the at least two registration points (24) on the bevel surface (23) are arranged asymmetrically on the bevel surface (23) relative to the center line of the bevel surface (23).

3. The anchorage pin device with multiple registration points of claim 1, wherein, The registration points (24) are semi-spherical concave structures or taper hole structures.

4. The anchorage pin device with multiple registration points of any one of claims 1 to 3, wherein, The bottom end surface (22) of the base (2) is provided with a receiving cavity (25) for accommodating the head of the anchorage pin (1), the top end surface (21) of the base (2) is provided with a first connecting hole (26), the first connecting hole (26) is in communication with the receiving cavity (25), and the communication portion is formed as a communication hole (27), the diameter of the communication hole (27) is smaller than the diameter of the first connecting hole (26) and the inner diameter of the receiving cavity (25); the head of the anchorage pin (1) is provided with a second connecting hole (11) to form a connection with the second connecting hole (11) of the head of the anchorage pin (1) through a fastening screw in the first connecting hole (26).

5. The bracket pin device with multiple registration points of claim 1, wherein, The base (2) is a titanium alloy base, and the surface is sandblasted to form a rough sandblasted layer.

6. An oral implant navigation registration assembly, comprising the anchorage pin device with multiple registration points according to any one of claims 1 to 5, further comprising a connecting bracket (3), a visual marker bracket (4) and a detection tool (5), one end of the connecting bracket (3) is adapted to be fixed to the oral and maxillofacial bone of a patient, the other end of the connecting bracket (3) is connected to the visual marker bracket (4), the visual marker bracket (4) is provided with a first visual marker point (41) for establishing a surgical region coordinate system through the first visual marker point (41); the detection tool (5) acts on the registration points (24) of the anchorage pin device with multiple registration points to obtain the corresponding coordinates of the registration points (24) in the surgical region coordinate system.

7. The oral implant navigation registration assembly of claim 6, wherein, The connecting bracket (3) is a connecting rod, a bending portion is provided in the middle of the connecting rod to form a bending portion adapted to avoid the patient's lips; One end of the connecting bracket (3) is provided with a transverse connecting hole perpendicular to the connecting bracket (3), and the visual marker bracket (4) is fixed to any one end of the transverse connecting hole.

8. The oral implant navigation registration assembly of claim 7, wherein, The other end of the connecting support (3) is provided with a mounting rack (31) which forms an arc matching the dental arch, and the mounting rack (31) is provided with a mounting hole in which a fixing nail is arranged to fix the one end of the connecting support (3) to the oral jaw bone of the patient through the fixing nail. The mounting hole on the mounting rack (31) is at least two.

9. The oral implant navigation registration assembly of claim 7 or 8, wherein, The visual marker rack (4) comprises a straight connecting rod (42) and a marker frame, one end of the straight connecting rod (42) is connected to the transverse connecting hole of the connecting support (3), the other end is connected to the marker frame, and the marker frame is provided with a plurality of first visual marker points (41).

10. The oral implant navigation registration assembly of claim 7 or 8, wherein, The detection tool (5) comprises a marking area and a detection area, the marking area is provided with a plurality of second visual marker points (51), and the detection area is provided with a detection head (52), the detection head (52) is matched with the shape of the registration point (24), and the detection head (52) is adapted to be fitted with the registration point (24).

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