External physical point registration device

Abstract

The utility model provides an external physical point registration device. The external physical point registration device comprises a registration device, a reference plate, a connecting assembly and a bone nail, a plurality of mounting through holes are formed in the registration device, and a registration connecting rod is arranged on the registration device; a plurality of reflective identification points are arranged on the reference plate, and a reference connecting rod is arranged on the reference plate; the registration connecting rod and the reference connecting rod are arranged at the two ends of the connecting assembly respectively. A plurality of bone nails are arranged, each bone nail is of a stainless steel structure, the registration device is fixed to the alveolar bone of a patient after the bone nails penetrate through the mounting through holes, and a pit is formed in the end of each bone nail. After the registration device and the reference plate are connected into an integral structure through the connecting assembly, a plurality of bone nails penetrate through a plurality of mounting through holes in the registration device in a one-to-one correspondence manner so as to be fixedly arranged on an alveolar bone and further fixedly arranged in an edentulous jaw oral cavity, so that navigation registration is performed on the edentulous jaw oral cavity before a tooth implantation operation is performed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an external physical point registration device used for registration before dental implantation. Background Art

[0002] Oral implant robot is a mature tool for performing dental implant surgery. After surgical tools such as implant mobile phones are fixed on the end of the robot, dental implant surgery can be performed with the help of digital technology by collecting the patient's real-time posture and the real-time posture of the implant mobile phone, combined with the implant plan designed in advance according to the patient's oral condition.

[0003] Before performing a dental implant operation using an oral implant robot, the tip of the terminal surgical tool needs to be aligned to establish a matrix conversion relationship between any two of the optical locator coordinate system, the CT three-dimensional coordinate system, the oral three-dimensional coordinate system, and the implant mobile phone coordinate system, so that the patient's real-time posture and the implant mobile phone can be displayed in real time in the CT image, facilitating real-time navigation and positioning.

[0004] The existing registration methods usually require that the registration device such as the registration device and the reference plate be fixed in the patient's mouth through the jaw, and then wrapped on the jaw with a concave fixing component, and then the concave fixing component and the jaw are connected and fixed by pouring glue between the two, so as to indirectly fix the registration device on the jaw. When facing the condition of an edentulous mouth with a completely missing tooth, it is difficult to perform preoperative registration because the registration device cannot be firmly installed on the jaw. Therefore, how to perform navigation registration of the edentulous mouth based on the registration device has always been a difficult problem that needs to be solved in the industry. Summary of the invention

[0005] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, an external physical point alignment device is provided, which can be fixedly arranged in the edentulous oral cavity, so as to perform navigation alignment of the edentulous oral cavity before performing dental implant surgery.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0007] An external physical point registration device, comprising:

[0008] The aligner is a plate-shaped structure, a plurality of mounting through holes are provided on the aligner, and a aligning connecting rod is provided on the aligner;

[0009] A reference plate, wherein the reference plate is a plate-shaped structure, a plurality of reflective marking points are arranged on the reference plate, and a reference connecting rod is arranged on the reference plate;

[0010] A connection assembly, wherein the registration connection rod is detachably disposed at one end of the connection assembly, and the reference connection rod is detachably disposed at the other end of the connection assembly;

[0011] Bone screws, wherein a plurality of bone screws are provided, and the bone screws are made of stainless steel. The bone screws correspond to the mounting through holes one by one. After the bone screws pass through the mounting through holes, the aligner is fixed to the patient's alveolar bone. A pit is formed at the end of the bone screw, and the pit is used for optical data acquisition and CT data acquisition.

[0012] Compared with the prior art, the beneficial effect of the present technical solution is that after the aligner and the reference plate are connected into an integral structure through a connecting assembly, a plurality of bone screws are used to pass through a plurality of mounting holes on the aligner one by one to fix it on the alveolar bone, and then fixedly set in the edentulous oral cavity, so as to perform navigation alignment of the edentulous oral cavity before performing the dental implant surgery.

[0013] Furthermore, the bone screw comprises a strip-shaped main shaft body, a first threaded connection portion, a second threaded connection portion, a fixed hexagonal nut and a movable hexagonal nut;

[0014] The strip-shaped main shaft body is inserted into the mounting through hole, the first threaded connection part and the second threaded connection part are respectively formed at two ends of the strip-shaped main shaft body, the fixed hexagonal nut is fixedly arranged in the middle of the strip-shaped main shaft body, the bone screw is fixedly connected to the patient's alveolar bone through the first threaded connection part, and the movable hexagonal nut is threadedly matched with the second threaded connection part to lock the aligner;

[0015] The recess is formed at the end portion where the second threaded connection portion is provided.

[0016] The beneficial effect of adopting the above scheme is: the bone screw is composed of a bar-shaped main shaft body, a first threaded connection part, a second threaded connection part, a fixed hexagonal nut and a movable hexagonal nut. During use, the fixed hexagonal nut can be used to drive the bar-shaped main shaft body to rotate so as to realize the installation and disassembly of the bone screw and the alveolar bone. After the bone screw is installed and fixed on the alveolar bone, the movable hexagonal nut and the second threaded connection part are used to fix the aligner on the alveolar bone; at the same time, the stainless steel structural characteristics of the bone screw are utilized to serve as an alignment reference point when CT data is collected.

[0017] Furthermore, the fixed hexagonal nut is fixedly disposed between the first threaded connection portion and the second threaded connection portion, and the fixed hexagonal nut is used to drive the strip-shaped main shaft body to rotate, and the strip-shaped main shaft body, the first threaded connection portion, the second threaded connection portion and the fixed hexagonal nut are an integrally formed structure.

[0018] The beneficial effect of adopting the above scheme is: the fixed hexagonal nut is fixedly arranged between the first threaded connection part and the second threaded connection part, and the strip main shaft body, the first threaded connection part, the second threaded connection part and the fixed hexagonal nut are formed into an integral structure. On the one hand, the fixed hexagonal nut can provide a driving point for the strip main shaft body with the simplest and most commonly used structure. On the other hand, it can also improve the rationality of the device structure, and has the advantages of easy production and easy use.

[0019] Furthermore, the reference plate is provided with a plurality of positioning recessed portions, and reflective stickers are affixed to the positioning recessed portions, and the reference plate forms the reflective identification points through the reflective stickers.

[0020] The beneficial effect of adopting the above scheme is that by affixing the reflective sticker on the positioning recessed portion to form a reflective identification point, the production cost of the device can be reduced, making it easy to manufacture on a large scale.

[0021] Furthermore, the connection assembly comprises a connecting sleeve with two-way openings, and the connecting sleeve is provided with an internal threaded connection portion;

[0022] The registration connecting rod is provided with a connecting sphere;

[0023] The reference connecting rod is provided with a circular bottom plate and a plurality of arc-shaped connecting pieces, the plurality of arc-shaped connecting pieces form a cylindrical structure, the fixed end of the arc-shaped connecting piece is provided on the circular bottom plate, the movable end of the arc-shaped connecting piece extends in a direction away from the circular bottom plate, and the arc-shaped connecting piece is provided with an external threaded connecting portion;

[0024] The connecting ball is inserted into one of the openings of the connecting sleeve, and the multiple arc-shaped connecting pieces are inserted into the other opening of the connecting sleeve. The connecting ball is sleeved between the multiple arc-shaped connecting pieces, and the connecting sleeve is sleeved on the periphery of the multiple arc-shaped connecting pieces. The connecting sleeve and the multiple arc-shaped connecting pieces are fixed and disassembled by the cooperation of the internal thread connection part and the external thread connection part.

[0025] The beneficial effect of adopting the above solution is that: based on the connection sleeve cooperating with the connecting sphere and the arc-shaped connecting piece, the function of adjusting the relative position between the aligner and the reference plate can be realized, and the fixing effect can also be effectively guaranteed.

[0026] Furthermore, a support column is provided on the circular bottom plate, the support column is located between the plurality of arc-shaped connecting pieces, the end of the support column is fixedly provided at the center of the circular bottom plate, and a spherical support surface is formed on the top of the support column;

[0027] When the connecting ball is sleeved between the plurality of arc-shaped connecting pieces, the connecting ball abuts against the ball supporting surface on the supporting column.

[0028] The beneficial effect of adopting the above solution is that a spherical support surface is provided for the connecting sphere through the support column, which can further ensure the fixing effect.

[0029] Furthermore, the arc-shaped connecting piece is formed with an arc transition surface on the outer side of the movable end.

[0030] The beneficial effect of adopting the above solution is that a guiding slope is provided by the arc transition surface, so that the device has the advantage of being easy to install and nest.

[0031] Furthermore, a plurality of protrusions are arranged at intervals outside the connecting sleeve.

[0032] The beneficial effect of adopting the above solution is that it is easy to disassemble without the assistance of additional tools.

[0033] Furthermore, the aligner, the alignment connecting rod, the reference plate and the reference connecting rod are all plastic structures.

[0034] The beneficial effect of adopting the above solution is that it can avoid the device being too heavy and causing burden to the patient.

[0035] Furthermore, the alignment connecting rod is integrally formed on the aligner, and the reference connecting rod is integrally formed on the reference plate.

[0036] The beneficial effects of adopting the above scheme are: it can ensure the rationality of the structure of the device and has the advantages of being easy to manufacture and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is an overall schematic diagram of the external physical point registration device of the utility model.

[0038] Figure 2 It is an exploded schematic diagram of the external physical point registration device of the utility model.

[0039] Figure 3 It is a schematic diagram of a bone screw in the external physical point registration device of the utility model.

[0040] Figure 4 It is a schematic diagram of the coordination of the registration connecting rod, the reference connecting rod and the connecting assembly in the external physical point registration device of the utility model.

[0041] Figure 5 It is a schematic diagram of a support column and an arc-shaped connecting piece in the external physical point registration device of the utility model.

[0042] In the figure, the components represented by the reference numerals are as follows:

[0043] Registrator 1, reference plate 2, connection component 3, bone screw 4;

[0044] Align the connecting rod 101 and the connecting sphere 102;

[0045] Reflective marking point 201, reference connecting rod 202, circular bottom plate 203, arc-shaped connecting piece 204, supporting column 205;

[0046] Connecting sleeve 301 and protruding portion 302;

[0047] A pit 401 , a strip-shaped main shaft body 402 , a first threaded connection portion 403 , a second threaded connection portion 404 , a fixed hexagonal nut 405 , and a movable hexagonal nut 406 . Implementation

[0048] In order to make the purpose, technical solution and advantages of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0049] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two components. When a component is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected" to another element, it can be directly connected to the other element or there can be a central element at the same time. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0051] Oral implant robot is a mature tool for performing dental implant surgery. After surgical tools such as implant mobile phones are fixed on the end of the robot, dental implant surgery can be performed with the help of digital technology by collecting the patient's real-time posture and the real-time posture of the implant mobile phone, combined with the implant plan designed in advance according to the patient's oral condition.

[0052] Before performing a dental implant operation using an oral implant robot, the tip of the terminal surgical tool needs to be aligned to establish a matrix conversion relationship between any two of the optical locator coordinate system, the CT three-dimensional coordinate system, the oral three-dimensional coordinate system, and the implant mobile phone coordinate system, so that the patient's real-time posture and the implant mobile phone can be displayed in real time in the CT image, facilitating real-time navigation and positioning.

[0053] The registration methods in the prior art mostly require fixing the registration device such as the aligner 1 and the reference plate 2 in the patient's oral cavity through the teeth and jaws, wrapping the teeth and jaws with a concave fixing component, and then connecting and fixing the concave fixing component and the teeth and jaws by pouring glue between the two, thereby indirectly fixing the registration device on the teeth and jaws. When facing the condition of an edentulous oral cavity with a completely missing tooth, it is difficult to perform preoperative registration because the registration device cannot be firmly installed on the teeth and jaws. Therefore, how to perform navigation registration of the edentulous oral cavity based on the registration device has always been a difficult problem that needs to be solved urgently in the industry.

[0054] like Figure 1 and Figure 2 As shown, in order to solve the above problems, the utility model provides an external physical point alignment device, including an aligner 1, a reference plate 2, a connecting component 3 and a bone screw 4. The aligner 1 is used to provide an alignment reference point when CT data is collected, the reference plate 2 is used to provide a positioning reference point when optical positioning is performed, the connecting component 3 is used to connect the aligner 1 and the reference plate 2 into an integral structure, and the bone screw 4 is used to fix the aligner 1 together with the entire device on the alveolar bone of the patient and serve as an alignment reference point when CT data is collected.

[0055] Specifically, the aligner 1 is a plate-like structure, a plurality of mounting through holes are provided on the aligner 1, and a aligner connecting rod 101 is provided on the aligner 1; the reference plate 2 is a plate-like structure, a plurality of reflective marking points 201 are provided on the reference plate 2, and a reference connecting rod 202 is provided on the reference plate 2; the aligner connecting rod 101 is detachably fixedly provided at one end of the connecting component 3, and the reference connecting rod 202 is detachably fixedly provided at the other end of the connecting component 3. A plurality of bone screws 4 are provided, and the bone screws 4 are stainless steel structures, and the bone screws 4 correspond to the mounting through holes one by one. After the bone screws 4 pass through the mounting through holes, the aligner 1 is fixed to the alveolar bone of the patient, and a pit 401 is formed at the end of the bone screw 4, and the pit 401 is used for optical data acquisition and CT data acquisition.

[0056] The specific assembly process of the device is as follows: fix the aligner 1 to one end of the connecting component 3 through the aligning connecting rod 101, and fix the reference plate 2 to the other end of the connecting component 3 through the reference connecting rod 202. Before fixing, adjust the relative position between the aligner 1 and the reference plate 2 to adapt to the specific oral conditions of different patients, and then lock them through the connecting component 3. At this point, the assembly process of the device is completed. The specific installation process of the device is as follows: fit the device to the patient's gums through the aligner 1, pass the bone screws 4 through the installation holes on the aligner 1 one by one, and drive the bone screws 4 into the alveolar bone so that the bone screws 4, the aligner 1 and the alveolar bone are fixed to each other. At this point, the installation process of the device is completed.

[0057] The specific process of registering the edentulous jaw oral cavity by the external physical point registration device in the technical solution is as follows: after the device is fixed on the alveolar bone of the patient by multiple bone screws 4, the CBCT data of the device is collected, the bone screws 4 are used as the registration reference points in the CT scan, the coordinate data of the pits 401 of each bone screw 4 in the CT three-dimensional coordinate system are identified, and the coordinate data of the pits 401 of each bone screw 4 in the optical locator coordinate system are further obtained by real-time positioning with the help of an optical locator, and after matching the coordinate data of the same pit 401 in the CT three-dimensional coordinate system and the coordinate data in the optical locator coordinate system, the corresponding matrix transformation relationship is calculated to complete the registration. It should be noted that the biggest innovation of the technical solution is that the registration device is fixed in the edentulous jaw oral cavity by the bone screws 4, and the pits 401 on the bone screws 4 are used as a medium to build a calculation bridge between the CT three-dimensional coordinate system and the optical locator coordinate system to obtain the matrix transformation relationship between the two coordinates. The specific transformation relationship is the existing technology, and the technical solution only involves the improvement of the structure of the bone screws 4.

[0058] Based on the above structure, after the aligner 1 and the reference plate 2 are connected into an integral structure through the connecting component 3, a plurality of bone screws 4 are used to pass through the plurality of mounting holes on the aligner 1 one by one to fix it on the alveolar bone, and then fixedly set in the edentulous oral cavity, so as to perform navigation alignment of the edentulous oral cavity before performing the dental implant surgery.

[0059] like Figure 3 As shown, preferably, the bone screw 4 comprises a strip-shaped main shaft body 402, a first threaded connection part 403, a second threaded connection part 404, a fixed hexagonal nut 405 and a movable hexagonal nut 406; the strip-shaped main shaft body 402 is inserted into the installation through hole, the first threaded connection part 403 and the second threaded connection part 404 are respectively formed at both ends of the strip-shaped main shaft body 402, the fixed hexagonal nut 405 is fixedly arranged in the middle of the strip-shaped main shaft body 402, the bone screw 4 is fixedly connected to the patient's alveolar bone through the first threaded connection part 403, the movable hexagonal nut 406 is threadedly matched with the second threaded connection part 404 to lock the aligner 1; the pit 401 is formed at the end provided with the second threaded connection part 404. After the bone screw 4 is securely fixed and installed, the pit 401 thereon is exposed to the outside, which is more convenient for identification during the alignment process.

[0060] During use, the fixed hexagonal nut 405 is driven to rotate the strip-shaped main shaft body 402, so that the strip-shaped main shaft body 402 is fixedly installed in the alveolar bone through the first threaded connection part 403, completing the first stage of installation. After completing this step, the installation through hole on the aligner 1 is further inserted into the fixed strip-shaped main shaft body 402, and the movable hexagonal nut 406 is installed on the second threaded connection part 404, and the second threaded connection part 404 is further rotated so that the second threaded connection part 404 gradually approaches the aligner 1 until the aligner 1 is completely fixed, completing the second stage of installation.

[0061] Based on the above structure, the bone screw 4 is composed of a strip main shaft body 402, a first threaded connection part 403, a second threaded connection part 404, a fixed hexagonal nut 405 and a movable hexagonal nut 406. During use, the fixed hexagonal nut 405 can be used to drive the strip main shaft body 402 to rotate, thereby realizing the installation and disassembly of the bone screw 4 and the alveolar bone. After the bone screw 4 is installed and fixed on the alveolar bone, the movable hexagonal nut 406 and the second threaded connection part 404 are used to fix the aligner 1 on the alveolar bone; at the same time, the stainless steel structural characteristics of the bone screw 4 can be used as a registration reference point when collecting CT data.

[0062] like Figure 3As shown, preferably, the fixed hexagonal nut 405 is fixedly arranged between the first threaded connection part 403 and the second threaded connection part 404, and the fixed hexagonal nut 405 is used to drive the strip main shaft body 402 to rotate, and the strip main shaft body 402, the first threaded connection part 403, the second threaded connection part 404 and the fixed hexagonal nut 405 are an integrally formed structure.

[0063] The fixed hexagonal nut 405 is arranged between the first threaded connection part 403 and the second threaded connection part 404, so that the first stage installation can be performed by the fixed hexagonal nut 405, and sufficient space is reserved for operating the movable hexagonal nut 406 during the second stage installation. Based on the above structure, the fixed hexagonal nut 405 is fixedly arranged between the first threaded connection part 403 and the second threaded connection part 404, and the strip-shaped main shaft body 402, the first threaded connection part 403, the second threaded connection part 404 and the fixed hexagonal nut 405 are an integrated structure. On the one hand, the fixed hexagonal nut 405 can provide the driving point of the strip-shaped main shaft body 402 with the simplest and most commonly used structure, and on the other hand, it can also improve the rationality of the device structure, and has the advantages of being easy to manufacture and easy to use.

[0064] Preferably, the reference plate 2 is provided with a plurality of positioning recesses, on which reflective stickers are affixed, and the reference plate 2 forms the reflective marking points 201 through the reflective stickers. Compared with directly forming the reflective marking points 201 on the reference plate 2, the reflective marking points 201 are formed by affixing reflective stickers on the positioning recesses, which can reduce the production cost of the device and facilitate large-scale manufacturing.

[0065] like Figure 4 As shown, preferably, the connection assembly 3 comprises a connection sleeve 301 with a two-way opening, and the connection sleeve 301 is provided with an internal thread connection portion; the registration connection rod 101 is provided with a connection ball 102;

[0066] A circular base plate 203 and a plurality of arc-shaped connecting pieces 204 are provided on the reference connecting rod 202, and the plurality of arc-shaped connecting pieces 204 form a cylindrical structure, the fixed end of the arc-shaped connecting piece 204 is provided on the circular base plate 203, the movable end of the arc-shaped connecting piece 204 extends in a direction away from the circular base plate 203, and an external threaded connection portion is provided on the arc-shaped connecting piece 204; the connecting ball 102 is inserted into one of the openings of the connecting sleeve 301, and the plurality of arc-shaped connecting pieces 204 are inserted into the other opening of the connecting sleeve 301, the connecting ball 102 is sleeved between the plurality of arc-shaped connecting pieces 204, the connecting sleeve 301 is sleeved on the periphery of the plurality of arc-shaped connecting pieces 204, and the connecting sleeve 301 and the plurality of arc-shaped connecting pieces 204 are fixed and disassembled by the cooperation of the internal threaded connection portion and the external threaded connection portion.

[0067] After the multiple arc-shaped connecting pieces 204 are surrounded into a cylindrical structure, the movable end on the arc-shaped connecting piece 204 allows it to have a certain elastic deformation space, so as to facilitate the insertion and removal of the connecting ball 102. The connecting sleeve 301 is sleeved outside the arc-shaped connecting piece 204, and the two are connected by threaded cooperation. When in use, the connecting ball 102 is inserted into the cylindrical structure surrounded by the multiple arc-shaped connecting pieces 204. In this process, the connecting ball 102 will open the arc-shaped connecting piece 204, and the connecting ball 102 enters after the arc-shaped connecting piece 204 undergoes elastic deformation. After adjusting the reference plate 2 and the aligner 1 so that the two are in an ideal relative position, the connecting sleeve 301 is rotated so that each arc-shaped connecting piece 204 gradually tightens and clamps the connecting ball 102, and finally completes the fixed installation. Therefore, based on the connection sleeve 301 cooperating with the connecting ball 102 and the arc-shaped connecting piece 204, it can realize the function of adjusting the relative position between the aligner 1 and the reference plate 2, and can also effectively ensure the fixing effect. In this structure, universal adjustment can be achieved by connecting the sphere 102, which is convenient for capturing relevant content during optical scanning and CT scanning, and is also convenient for adjusting the device to an ideal position so as not to affect the operation.

[0068] like Figure 5 As shown, preferably, a support column 205 is provided on the circular bottom plate 203, and the support column 205 is located between the plurality of arc-shaped connecting pieces 204. The end of the support column 205 is fixedly provided at the center of the circular bottom plate 203, and a spherical support surface is formed on the top of the support column 205; when the connecting sphere 102 is sleeved between the plurality of arc-shaped connecting pieces 204, the connecting sphere 102 abuts against the spherical support surface on the support column 205. Based on the above structure, a spherical support surface is provided for the connecting sphere 102 by the support column 205, so that the fixing effect can be further ensured.

[0069] like Figure 5As shown, preferably, the arc-shaped connecting piece 204 is formed with an arc transition surface on the outer side of the movable end. The arc transition surface provides a guide slope, and in the process of inserting the connecting sleeve 301 into the plurality of arc-shaped connecting pieces 204, the guide slope plays a certain guiding and correcting role, so that the device has the advantage of being easy to install and nest.

[0070] like Figure 4 As shown, preferably, a plurality of protrusions 302 are arranged at intervals outside the connecting sleeve 301. The plurality of protrusions 302 provide a fulcrum, which facilitates manual disassembly without the assistance of additional tools.

[0071] Specifically, the aligner 1, the alignment connecting rod 101, the reference plate 2 and the reference connecting rod 202 are all plastic structures. Using plastic structures as the aligner 1, the alignment connecting rod 101, the reference plate 2 and the reference connecting rod 202 can avoid the device being too heavy and causing a burden on the patient.

[0072] Specifically, the registration connecting rod 101 is integrally formed on the register 1, and the reference connecting rod 202 is integrally formed on the reference plate 2. The integral forming method can ensure the rationality of the structure of the device, and has the advantages of easy manufacture and use.

[0073] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An external physical point registration device, characterized in that: include: The aligner is a plate-shaped structure, a plurality of mounting through holes are provided on the aligner, and a aligning connecting rod is provided on the aligner; A reference plate, wherein the reference plate is a plate-shaped structure, a plurality of reflective marking points are arranged on the reference plate, and a reference connecting rod is arranged on the reference plate; A connection assembly, wherein the registration connection rod is detachably disposed at one end of the connection assembly, and the reference connection rod is detachably disposed at the other end of the connection assembly; Bone screws, wherein a plurality of bone screws are provided, and the bone screws are made of stainless steel. The bone screws correspond to the mounting through holes one by one. After the bone screws pass through the mounting through holes, the aligner is fixed to the patient's alveolar bone. A pit is formed at the end of the bone screw, and the pit is used for optical data acquisition and CT data acquisition.

2. The external physical point registration device according to claim 1, characterized in that: The bone screw comprises a strip-shaped main shaft body, a first threaded connection part, a second threaded connection part, a fixed hexagonal nut and a movable hexagonal nut; The strip-shaped main shaft body is inserted into the mounting through hole, the first threaded connection part and the second threaded connection part are respectively formed at two ends of the strip-shaped main shaft body, the fixed hexagonal nut is fixedly arranged in the middle of the strip-shaped main shaft body, the bone screw is fixedly connected to the patient's alveolar bone through the first threaded connection part, and the movable hexagonal nut is threadedly matched with the second threaded connection part to lock the aligner; The recess is formed at the end portion where the second threaded connection portion is provided.

3. The external physical point registration device according to claim 2, characterized in that: The fixed hexagonal nut is fixedly disposed between the first threaded connection portion and the second threaded connection portion, and is used to drive the strip-shaped main shaft body to rotate. The strip-shaped main shaft body, the first threaded connection portion, the second threaded connection portion and the fixed hexagonal nut are an integrally formed structure.

4. The external physical point registration device according to claim 1, characterized in that: The reference plate is provided with a plurality of positioning recessed parts, on which reflective stickers are affixed, and the reference plate forms the reflective identification points through the reflective stickers.

5. The external physical point registration device according to claim 1, characterized in that: The connecting assembly comprises a connecting sleeve with two-way openings, and an internal threaded connecting portion is arranged on the connecting sleeve; The registration connecting rod is provided with a connecting sphere; The reference connecting rod is provided with a circular bottom plate and a plurality of arc-shaped connecting pieces, the plurality of arc-shaped connecting pieces form a cylindrical structure, the fixed end of the arc-shaped connecting piece is provided on the circular bottom plate, the movable end of the arc-shaped connecting piece extends in a direction away from the circular bottom plate, and the arc-shaped connecting piece is provided with an external threaded connecting portion; The connecting ball is inserted into one of the openings of the connecting sleeve, and the multiple arc-shaped connecting pieces are inserted into the other opening of the connecting sleeve. The connecting ball is sleeved between the multiple arc-shaped connecting pieces, and the connecting sleeve is sleeved on the periphery of the multiple arc-shaped connecting pieces. The connecting sleeve and the multiple arc-shaped connecting pieces are fixed and disassembled by the cooperation of the internal thread connection part and the external thread connection part.

6. The external physical point registration device according to claim 5, characterized in that: A support column is provided on the circular bottom plate, the support column is located between the plurality of arc-shaped connecting pieces, the end of the support column is fixedly provided at the center of the circular bottom plate, and a spherical support surface is formed on the top of the support column; When the connecting ball is sleeved between the plurality of arc-shaped connecting pieces, the connecting ball abuts against the ball supporting surface on the supporting column.

7. The external physical point registration device according to claim 5, characterized in that: The arc-shaped connecting piece is formed with an arc transition surface on the outer side of the movable end.

8. The external physical point registration device according to claim 5, characterized in that: A plurality of protrusions are arranged at intervals outside the connecting sleeve.

9. An external physical point registration device according to any one of claims 1 to 8, characterized in that: The register, the register connecting rod, the reference plate and the reference connecting rod are all plastic structures.

10. An external physical point registration device according to any one of claims 1 to 8, characterized in that: The alignment connecting rod is integrally formed and arranged on the aligner, and the reference connecting rod is integrally formed and arranged on the reference plate.

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