High-precision edentulous jaw scanning rod

Abstract

The utility model discloses a high accuracy toothless jaw scanning rod relates to toothless jaw implantation technical field, including scanning body, the inside of scanning body is equipped with fixed establishment, the one end of scanning body is installed with adjusting mechanism, the lower end swing mounting of scanning body is equipped with the implant nail, the bottom fixed of implant nail is equipped with the base, the cavity in scanning body and implant nail top are all horn -like, in this way convenient to embed and install the jawbone implant nail, after the screw head and the stud pass through the countersunk head and the inner hole in proper order, the screw head can be flush with the upper end surface of scanning body, can represent that the stud has been screwed to the jawbone implant nail, namely represent that the installation of scanning body is in place, can determine whether scanning body is installed in place with the naked eye, convenient and fast, at this time the external thread of stud bottom can be inserted into the internal thread of implant nail top, and then screwing its screw head, the thread installation between external thread and internal thread is convenient, in this way convenient to fasten and install scanning body, and then the intraoral installation of scanning body is convenient.

Description

Technical Field

[0001] This utility model relates to the field of edentulous jaw implant technology, specifically to a high-precision edentulous jaw scanning rod. Background Technology

[0002] Edentulousness is a condition caused by congenital or acquired factors that result in the complete loss of the root of the tooth. This condition is more common in the elderly and directly affects the patient's ability to eat and chew. Treatment requires edentulous jaw implantation. Before implantation, a scanning rod is placed on the patient's tooth to create a model of the tooth for the doctor to observe.

[0003] Existing methods for taking impressions of edentulous jaws require a combination of intraoral and extraoral approaches. However, intraoral installation is cumbersome and it is difficult to accurately obtain the position of the implant. In addition, the different spacing between implants makes it impossible to effectively stitch the scans together, which can easily lead to distortion of intraoral scan data during edentulous jaw scanning. This is time-consuming, laborious, and affects the user experience. Utility Model Content

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A high-precision edentulous jaw scanning bar includes a scanning body, a fixing mechanism inside the scanning body, an adjustment mechanism installed at one end of the scanning body, an implant screw movably installed at the lower end of the scanning body, and a base fixedly provided at the bottom of the implant screw; The fixing mechanism includes a countersunk hole, which is located inside the top of the scanning body. The scanning body has an inner hole in the middle and a cavity in the lower end. A screw head is movably inserted into the countersunk hole. A stud is fixedly provided at the lower end of the screw head. An external thread is fixedly provided at the bottom of the stud. An internal thread is provided inside the top of the implantation base.

[0005] Preferably, the countersunk hole, the inner hole, and the cavity are interconnected, and the screw head and the stud are integrally formed.

[0006] Preferably, the stud is movably installed through the inner hole, the cavity is trumpet-shaped, and the external thread and the internal thread are threadedly connected.

[0007] Preferably, the adjustment mechanism includes a side screw hole, which is opened at one end of the scanning body. A threaded post is installed inside the side screw hole, and a scanning rod is fixedly provided at the top of the threaded post. A slot is opened inside the scanning rod, and a sliding plate is slidably connected inside the slot. An annular guide groove is opened on the outside of the slot, and an annular guide plate is fixedly provided on the outer wall of the sliding plate. An extension rod is fixedly provided at one end of the sliding plate, and a scanning post is fixedly provided at the top of the extension rod.

[0008] Preferably, the slide plate is circular to facilitate sliding within the slot, and the guide plate is fitted into the guide slot and slidably connected.

[0009] Preferably, the top end of the extension rod is slidably installed through one end of the scanning rod.

[0010] Preferably, multiple sets of implant screws and bases are equidistantly implanted in the user's jawbone, and multiple sets of grooves are formed on the surface of the scanning body. These grooves serve as scanning feature markers to improve scanning accuracy.

[0011] Preferably, the tip of the implant is trumpet-shaped, the implant is fitted into the cavity, and it is movably installed.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a high-precision edentulous jaw scanning bar. Through a fixing mechanism, the cavity in the scanning body and the top of the implant are both funnel-shaped, facilitating the insertion of the jaw implant. After the screw head and stud pass through the countersunk head and inner hole in sequence, the screw head can be flush with the upper surface of the scanning body, indicating that the stud has been screwed into the jaw implant, signifying that the scanning body is properly installed. This can be visually confirmed, making the installation quick and easy. At this point, the external thread at the bottom of the stud can be inserted into the internal thread at the top of the implant, and then the screw head can be screwed on to facilitate threaded installation between the external and internal threads, thus facilitating the secure installation of the scanning body and ultimately its intraoral placement.

[0013] This invention provides a high-precision edentulous jaw scanning rod. Through an adjustment mechanism, medical personnel can clamp the scanning rod with tools such as tweezers, thereby pulling it. This allows the extension rod to drive the slide plate to slide within the slot, thus adjusting the length between the scanning rod and the extension rod. This facilitates extending the scanning rod to the desired position, making it contact with adjacent scanning objects, thereby forming a contact connection. This allows for more accurate acquisition of positional data between adjacent implant scanning objects, improving scanning accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the high-precision edentulous jaw scanning rod of this utility model; Figure 2 This is a structural schematic diagram showing the details of the high-precision edentulous jaw scanning rod of this utility model; Figure 3 This is a schematic diagram of the fixing mechanism of this utility model; Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model.

[0015] In the diagram: 1. Scanning body; 2. Fixing mechanism; 3. Adjustment mechanism; 4. Implant pin; 5. Base; 21. Countersunk hole; 22. Inner hole; 23. Cavity; 24. Screw head; 25. Stud; 26. External thread; 27. Internal thread; 31. Side threaded hole; 32. Threaded post; 33. Scanning rod; 34. Slot; 35. Slide plate; 36. Guide groove; 37. Guide plate; 38. Extension rod; 39. Scanning column. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to embodiments: like Figures 1-4 As shown, this utility model provides a high-precision edentulous jaw scanning bar, including a scanning body 1, a fixing mechanism 2 inside the scanning body 1, an adjustment mechanism 3 installed at one end of the scanning body 1, an implant stub 4 movably installed at the lower end of the scanning body 1, and a base 5 fixedly installed at the bottom of the implant stub 4.

[0017] Multiple sets of implant screws 4 and bases 5 are equidistantly implanted in the user's jawbone. Multiple sets of grooves are opened on the surface of the scanning body 1. The grooves serve as scanning feature markers to improve scanning accuracy.

[0018] The top of the implant nail 4 is trumpet-shaped, and the implant nail 4 fits into the cavity 23 and is movable.

[0019] In this approach, when taking an impression, the intraoral implant scanner 1 with its characteristic surface morphology is first connected and fixed to the implant post 4. Then, the scanner directly collects the information of the scanner 1 and the intraoral soft tissue surface to obtain a digital impression of the edentulous implant. This method greatly simplifies the traditional impression-taking process, improves patient comfort, significantly reduces treatment time, and increases work efficiency. The software training for doctors is also relatively simple. Even if the image obtained for a certain area is not satisfactory, only that area needs to be scanned again, without having to repeat the entire process.

[0020] like Figure 3 As shown, the fixing mechanism 2 includes a countersunk hole 21, which is located inside the top of the scanning body 1. An inner hole 22 is provided in the middle of the scanning body 1, and a cavity 23 is provided inside the lower end of the scanning body 1. A screw head 24 is movably inserted into the countersunk hole 21. A stud 25 is fixedly provided at the lower end of the screw head 24. An external thread 26 is fixedly provided at the bottom of the stud 25. An internal thread 27 is provided inside the top of the implantation base 5.

[0021] The countersunk hole 21, the inner hole 22 and the cavity 23 are interconnected, and the screw head 24 and the stud 25 are integrally formed.

[0022] The stud 25 is movably installed through the inner hole 22, the cavity 23 is trumpet-shaped, and the external thread 26 and the internal thread 27 are threadedly connected.

[0023] In this solution, the cavity 23 inside the scanning body 1 and the top of the jaw implant 4 adopt a unified trumpet-shaped structure. The flared characteristics of the trumpet shape can form a guided insertion channel. In the initial stage of installation, the structure itself can guide the operator to quickly align the central axis of the scanning body 1 and the implant 4, avoiding installation deviation caused by manual alignment. Compared with the traditional straight wall structure, the trumpet-shaped fit not only reduces the alignment difficulty during insertion, but also forms a temporary positioning support after the initial insertion, greatly improving the convenience of intraoral operation.

[0024] like Figure 4 As shown, the adjustment mechanism 3 includes a side screw hole 31, which is located at one end of the scanning body 1. A threaded post 32 is installed inside the side screw hole 31. A scanning rod 33 is fixedly mounted at the top of the threaded post 32. A slot 34 is opened inside the scanning rod 33. A sliding plate 35 is slidably connected inside the slot 34. An annular guide groove 36 is opened on the outside of the slot 34. An annular guide plate 37 is fixedly mounted on the outer wall of the sliding plate 35. An extension rod 38 is fixedly mounted at one end of the sliding plate 35. A scanning post 39 is fixedly mounted at the top of the extension rod 38.

[0025] The slide plate 35 is circular, which facilitates sliding within the slot 34. The guide plate 37 is fitted into the guide slot 36 and is slidably connected.

[0026] The top end of the extension rod 38 is slidably mounted through one end of the scanning rod 33.

[0027] In this design, the slide plate 35 drives the guide plate 37 to slide synchronously within the guide groove 36, thereby greatly improving the stability of the extension rod 38. The scanning rod 33 and the scanning body 1 are threaded together through the threaded post 32 and the side threaded hole 31 on the scanning body 1, which facilitates disassembly, replacement or cleaning. By precisely extending the scanning post 39 to the position of contact with the adjacent scanning body 1, a stable contact connection is formed. Compared with non-contact scanning, the contact connection can effectively avoid scanning errors, while also accommodating implant pins 4 with different spacings, making it convenient for scanning bodies 1 with different spacings to make contact connections.

[0028] The working principle of this high-precision edentulous jaw scanning rod will be explained in detail below.

[0029] like Figures 1-4As shown, when using this high-precision edentulous jaw scanner, the cavity 23 in the scanner body 1 and the top of the implant 4 are both funnel-shaped, facilitating the insertion of the jaw implant 4. After the screw head 24 and stud 25 pass through the countersunk head and inner hole 22 in sequence, the screw head 24 can be flush with the upper end face of the scanner body 1, indicating that the stud 25 has been screwed into the jaw implant 4, signifying that the scanner body 1 is installed correctly. This can be visually confirmed to ensure that the scanner body 1 is installed correctly, which is convenient and quick. At this time, the external thread 26 at the bottom of the stud 25 can be inserted into the internal thread 27 at the top of the implant 4. Then, the screw head 24 is screwed on to facilitate the threaded installation between the external thread 26 and the internal thread 27, thus facilitating the tight installation of the scanner body 1 and its intraoral installation. Medical staff use tweezers or other tools to clamp the scanning column 39, which can be pulled to allow the extension rod 38 to slide the slide plate 35 within the slot 34. This allows adjustment of the length between the scanning rod 33 and the extension rod 38, facilitating the extension of the scanning column 39 to the desired position and make it contact the adjacent implant 1. This facilitates a contact connection, enabling more accurate acquisition of positional data between adjacent implant implants 1 and improving scanning accuracy. Finally, medical staff use a scanner to scan the intraoral implant 1, obtaining all surface data of the scanned oral object through continuous overlapping and stitching of small-area single-field scanning point cloud data. This allows for real-time capture of intraoral soft and hard tissue surface data, facilitating the acquisition of digital impressions for edentulous implants.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A high-precision edentulous jaw scanning bar, comprising a scanning body (1), wherein a fixing mechanism (2) is provided inside the scanning body (1), characterized in that: An adjustment mechanism (3) is installed at one end of the scanning body (1), and an implantation nail (4) is movably installed at the lower end of the scanning body (1). A base (5) is fixedly provided at the bottom of the implantation nail (4). The fixing mechanism (2) includes a countersunk hole (21), which is located inside the top of the scanning body (1). The scanning body (1) has an inner hole (22) in the middle and a cavity (23) in the lower end. A screw head (24) is movably inserted into the countersunk hole (21). A stud (25) is fixedly provided at the lower end of the screw head (24). An external thread (26) is fixedly provided at the bottom of the stud (25). An internal thread (27) is provided inside the top of the implantation base (5).

2. The high-precision edentulous jaw scanning rod according to claim 1, characterized in that: The countersunk hole (21), inner hole (22) and cavity (23) are interconnected, and the screw head (24) and stud (25) are integrally formed.

3. The high-precision edentulous jaw scanning rod according to claim 1, characterized in that: The stud (25) is movably installed through the inner hole (22), the cavity (23) is trumpet-shaped, and the external thread (26) and the internal thread (27) are threadedly connected.

4. A high-precision edentulous jaw scanning rod according to claim 1, characterized in that: The adjustment mechanism (3) includes a side screw hole (31), which is located at one end of the scanning body (1). A threaded post (32) is installed inside the side screw hole (31). A scanning rod (33) is fixedly provided at the top of the threaded post (32). A slot (34) is provided inside the scanning rod (33). A sliding plate (35) is slidably connected inside the slot (34). An annular guide groove (36) is provided on the outside of the slot (34). An annular guide plate (37) is fixedly provided on the outer wall of the sliding plate (35). An extension rod (38) is fixedly provided at one end of the sliding plate (35). A scanning post (39) is fixedly provided at the top of the extension rod (38).

5. A high-precision edentulous jaw scanning rod according to claim 4, characterized in that: The slide plate (35) is circular, which facilitates sliding in the slot (34). The guide plate (37) is fitted into the guide slot (36) and is slidably connected.

6. A high-precision edentulous jaw scanning rod according to claim 4, characterized in that: The top end of the extension rod (38) is slidably mounted through one end of the scanning rod (33).

7. A high-precision edentulous jaw scanning rod according to claim 1, characterized in that: The user has multiple sets of implant screws (4) and bases (5) placed equidistantly in the jawbone. The surface of the scanning body (1) has multiple sets of slots, which serve as scanning feature markers to improve scanning accuracy.

8. A high-precision edentulous jaw scanning rod according to claim 1, characterized in that: The top of the implant nail (4) is trumpet-shaped, and the implant nail (4) fits into the cavity (23) and is movable.

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