Impression transfer rod for oral implant and oral impression transfer assembly

Abstract

The application relates to the field of tooth implantation, in particular to a mold transfer rod for oral implantation. The mold transfer rod comprises a rod body, the rod body is provided with a through hole extending along the axial direction and penetrating through both ends of the rod body, and the rod body is sequentially divided into a transfer section, a connecting section and a combination section along the length direction. The transfer section is formed with a positioning pattern, the positioning pattern at least comprises first and second patterns with different shapes, the first pattern is used for determining the depth and position of the rod body during installation, and the second pattern is used for accurately determining the position of the rod body, so that the transfer section realizes accurate positioning of the corresponding position of the rod body in the mold. The mold transfer rod does not need to use a mold cap for auxiliary positioning during the mold process, thereby achieving the effects of simplifying the operation and optimizing the patient experience.

Description

Technical Field

[0001] This application relates to the field of dental implants, and in particular to an impression transfer rod and an oral impression transfer assembly for dental implants. Background Technology

[0002] In the field of prosthodontics, obtaining accurate information about the morphology of oral tissues is crucial during the early stages of fixed restorations. Impression transfer rods, used in conjunction with high-performance impression materials, can precisely replicate the fine structures of oral tissues.

[0003] Existing impression structures generally include an impression rod and an impression cap that mates with the impression rod. The impression cap is fitted onto the impression rod, which is connected to the implant. During impression taking, the impression cap and impression rod contact the impression material, accurately transferring the three-dimensional position and orientation of the intraoral implant to the working model. However, because the operator (dentist) needs to connect the impression rod first, then place the impression cap on the rod, and after taking the impression, reassemble the implant within the dental model to restore its three-dimensional spatial position in the oral cavity—sometimes requiring repeated adjustments—and because implant restorations have extremely strict positional requirements—a 1mm deviation can lead to the restoration not being able to be reattached, poor occlusion, or even screws not being able to be inserted—this increases the complexity and error probability of the medical procedure. Utility Model Content

[0004] This application provides an impression transfer rod and an oral impression transfer assembly for dental implantation, which eliminates the need for an impression cap to assist in positioning the impression transfer rod during the impression process, thereby simplifying the operation and optimizing the patient experience.

[0005] The impression transfer rod for dental implantation provided in this application adopts the following technical solution: The rod has a through hole extending axially and passing through both ends. The rod is divided into a transfer section, a connecting section, and a joining section along its length. The transfer section has a positioning pattern. The outer diameter gradually increases from the transfer section to the connecting section. The bottom of the connecting section away from the transfer section also has an annular platform. The joining section is connected to the bottom of the annular platform. When in use, the joining section is used to fix the rod to the implant.

[0006] Compared with existing technologies, the advantages of the above technical solution are as follows: The through hole along the axial direction of the rod body allows for fixation of the rod body with the implant via screws; the rod body is sequentially divided into a transfer section, a connecting section, and a bonding section along its length; the positioning pattern formed by the transfer section eliminates the need for capping and removing caps in existing technologies, achieving precise positioning with just one transfer rod; the gradual increase in outer diameter from the transfer section to the connecting section helps maintain the stability of the rod body structure; the bottom of the bonding section is connected to the annular platform, which provides a certain limiting effect during the fixation of the bonding section and the implant; the integrated structure eliminates concerns about loosening of the rod and cap or deformation of the cap causing errors, improving clinical efficiency: doctor / technician operations are more intuitive and simpler, and time is shorter.

[0007] The positioning pattern includes at least a first pattern and a second pattern with different shapes, and the first pattern and the second pattern are symmetrically arranged about the central axis on the circumferential surface of the rod.

[0008] The beneficial effects of adopting the above technical solution are: the positioning pattern enables the positioning of the rod body on the printing material during the printing process, including the position, depth, and angle information, thereby achieving a precise positioning effect of the rod body; the positioning pattern includes at least the first pattern and the second pattern with different shapes, thereby enhancing the positioning effect of the rod body; the symmetrical arrangement of the first pattern and the second pattern about the central axis of the rod body helps to maintain the stability of the rod body structure.

[0009] The first pattern is a ring groove, which divides the transfer section into a first sub-segment and a second sub-segment, the length of the first sub-segment being less than the length of the second sub-segment.

[0010] The beneficial effects of adopting the above technical solution are: the first pattern improves the accuracy of the rod's positioning; the length of the first segment is less than the length of the second segment, which helps to distinguish the direction and angle of the rod during the molding process, thereby improving the accuracy of the rod's positioning and reducing erroneous operations.

[0011] The second pattern includes at least two longitudinal grooves, which extend from the first sub-segment to the second sub-segment and are equally spaced on the circumferential surface of the rod.

[0012] The beneficial effects of adopting the above technical solution are: the second pattern enriches the structure of the transfer section, thereby enabling the rod to achieve precise positioning through rich position, depth and angle information during the printing process; at the same time, the two longitudinal grooves are evenly distributed on the circumferential surface of the rod, which is conducive to the uniform force on the rod.

[0013] The positioning pattern also includes a third pattern, which is located between the two second patterns. The third pattern is a plane formed by cutting from the transfer section to the bottom of the connecting section.

[0014] The beneficial effects of adopting the above technical solution are: the shape of the third pattern helps to reduce the processing difficulty of the positioning pattern, and the third pattern helps to mark the positioning and identify the direction of the rod during the molding process.

[0015] The end of the first sub-segment furthest from the connecting segment has a rounded corner shape.

[0016] The beneficial effects of adopting the above technical solution are: the rounded corner shape guides the rod to cooperate with the screw and to be firmly connected to the implant during the impression process, and at the same time, the rounded corner shape prevents the end face of the rod from scratching the patient's oral cavity during the impression process, thereby improving the safety of use.

[0017] The outer circumference of the connecting section is hexagonal plum blossom shaped.

[0018] The beneficial effects of adopting the above technical solution are: the hexagonal plum blossom shape reduces the stress when the rod is connected to the implant, and at the same time, the hexagonal plum blossom shape increases the contact area and friction between the connecting section and the implant, thereby ensuring the stability when the rod is connected to the implant.

[0019] The inner circumferential surface of the connecting section is formed with threads that mate with screws.

[0020] The beneficial effect of adopting the above technical solution is that the thread enables the rod body and the screw to be fastened together, preventing loosening.

[0021] The surface of the annular platform near the mating segment is concave to form a mating surface that mates with the gingival surface.

[0022] The beneficial effects of adopting the above technical solution are: by the cooperation between the bonding surface and the gingival surface, the bonding segment fits the gingival surface during the impression process, thereby avoiding leakage of impression material and affecting impression accuracy. At the same time, the cooperation between the bonding surface and the gingival surface improves the patient's comfort during the impression process.

[0023] An oral impression transfer assembly includes an implant, a screw, and a transfer rod, wherein the transfer rod is any of the above-described impression transfer rods for oral implants, the transfer rod is inserted into the implant, and the screw passes through the through hole and is fixed to the implant.

[0024] By adopting the above technical solution, the transfer rod, through the positioning pattern, achieves precise positioning of the transfer rod on the impression material during the impression process, thereby realizing the transfer of the angle, position, and depth information of the implant and ensuring the accuracy of the impression; at the same time, the transfer rod is stably connected to the implant by the screw passing through the through hole, thereby improving the efficiency of subsequent operations and improving patient comfort.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The rod body is precisely positioned during the printing process by means of the positioning pattern provided in the transfer section, thus eliminating the need for a printing cap to assist in positioning; 2. The hexagonal plum blossom shape on the outer circumference of the connecting section ensures the stability and accuracy of the rod body when connecting the implant; 3. The mating surface is formed by the concave shape of the annular platform, and the mating surface cooperates with the gingival surface to reduce the pressure of the bar on the gingival surface and improve patient comfort. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an impression transfer rod for dental implantation according to one embodiment of this application.

[0027] Figure 2 This is a cross-sectional view of an impression transfer rod for dental implantation according to one embodiment of this application.

[0028] Figure 3 This is an oblique view of an impression transfer rod for dental implantation as described in one embodiment of this application.

[0029] Figure 4 This is a top view of an impression transfer rod for dental implantation according to one embodiment of this application.

[0030] Explanation of reference numerals in the attached figures: 1. Through hole; 2. Transfer section; 21. First pattern; 22. Second pattern; 23. Third pattern; 24. First sub-segment; 25. Second sub-segment; 26. Rounded corner shape; 3. Connecting section; 31. Ring platform; 4. Joining section; 41. Hexagonal plum blossom shape; 42. Thread; 43. Joining surface. Detailed Implementation

[0031] The present application will be further described in detail below with reference to all the accompanying drawings.

[0032] This application discloses an impression transfer rod for dental implantation.

[0033] Please see Figure 1An impression transfer rod for dental implantation includes: a rod body, the rod body having a through hole 1, the rod body being divided into a transfer section 2, a connecting section 3 and a connecting section 4 along its length, and the bottom of the connecting section 3 away from the transfer section 2 having an annular platform 31.

[0034] Please see Figure 1-4 During the impression process, screws pass through the through hole 1 to fix the rod body to the implant.

[0035] More specifically, the rod body has a through hole 1 extending axially and passing through both ends of the rod body. The through hole 1 starts from one end of the transfer section 2. The through hole 1 has a rounded corner at one end of the transfer section 2, extends axially along the rod body and passes through the connecting section 3 and the joining section 4. When the through hole 1 enters the annular platform 31, it has a rounded corner and its inner diameter decreases. The through hole 1 has a thread 42 formed on the inner circumferential surface of the joining section 4 near the annular platform 31 to cooperate with a screw. The screw passes through the through hole 1 to fix the rod body to the implant.

[0036] The transfer section 2 is formed with a positioning pattern, which includes at least a first pattern 21 and a second pattern 22 with different shapes.

[0037] More specifically, the first pattern 21 and the second pattern 22 are symmetrically arranged about the central axis on the circumferential surface of the rod. The first pattern 21 is an annular groove that divides the transfer section 2 into a first sub-segment 24 and a second sub-segment 25. The length of the first sub-segment 24 is less than the length of the second sub-segment 25, and the end of the first sub-segment 24 away from the connecting section 4 has a rounded corner shape 26. The second pattern 22 includes at least two longitudinal grooves that extend from the first sub-segment 24 to the second sub-segment 25 and are equally spaced on the circumferential surface of the rod. The positioning pattern also includes a third pattern 23, which is located between the two second patterns 22. The third pattern 23 is a plane formed by cutting from the transfer section 2 to the bottom of the connecting section 3.

[0038] The outer diameter of the rod gradually increases from the transfer section 2 to the connecting section 3. The bottom of the connecting section 3 away from the transfer section 2 is also formed with an annular platform 31. The connecting section 4 is connected to the bottom of the annular platform 31. The surface of the annular platform 31 near the connecting section 4 is concave to form a mating surface 43 that matches the gingival surface.

[0039] More specifically, the outer circumferential surface of the connecting segment 4 is a hexagonal plum blossom shape 41, which makes the stress distribution more uniform when rotating and fixed to the implant.

[0040] The implementation principle of an impression transfer rod for dental implants according to an embodiment of this application is as follows: Before impression taking, the connecting segment 4 is accurately connected to the implant, and the rod is fixed to the implant through the through hole 1 using the screw, and the connecting surface 43 is aligned with the gingival surface; during impression taking, the impression material determines the oral cavity morphology information, and the positioning pattern forms a complementary structure within the impression material. The position of the rod during impression taking is determined by the positioning pattern. The first pattern 21 determines the position, angle, and depth of the rod, the second pattern 22 accurately determines the position, angle, and depth of the rod in the impression material, and the third pattern 23 provides positioning marks and identification direction; after impression taking, the precise position of the rod in the impression material is determined by the positioning pattern and the complementary structure, thereby achieving precise transfer of the implant and oral cavity morphology information.

[0041] In summary, the solution of this invention eliminates the need for an impression cap because: by incorporating positioning patterns, a gradually expanding outer diameter, and anti-rotation steps into the transfer rod body, these structures firmly engage with the impression material after filling and wrapping it, forming a precise and unique spatial transfer reference. This integrates the spatial positioning, anti-rotation and anti-misalignment, and unique fitting functions originally achieved by the impression cap into the transfer rod itself. Thus, during impression removal, the transfer rod itself firmly engages with the impression material, directly achieving high-precision three-dimensional positional transfer without the need for an additional impression cap, thereby significantly simplifying clinical procedures and reducing the risk of errors.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An impression transfer rod for dental implants, characterized in that, include: The rod body has through holes (1) extending axially and passing through both ends of the rod body. The rod body is divided into a transfer section (2), a connecting section (3), and a connecting section (4) along its length. The transfer section (2) has a variety of positioning patterns. The outer diameter gradually expands from the transfer section (2) to the connecting section (3). The bottom of the connecting section (3) away from the transfer section (2) also forms an annular platform (31). The connecting section (4) is connected to the bottom of the annular platform (31). When the rod body is in use, the connecting section (4) is used to fix it to the implant.

2. The impression transfer rod for dental implants according to claim 1, characterized in that: The various positioning patterns are any one or a combination of two or more of the following: an annular groove surrounding the transfer section (2), a longitudinal groove set in the transfer section (2), or a plane formed by cutting.

3. The impression transfer rod for dental implants according to claim 2, characterized in that: The various positioning patterns include at least a first pattern (21) and a second pattern (22) with different shapes, both of which are symmetrically arranged about the central axis on the circumferential surface of the rod.

4. The impression transfer rod for dental implants according to claim 3, characterized in that: The first pattern (21) is an annular groove, which divides the transfer section (2) into a first sub-segment (24) and a second sub-segment (25). The length of the first sub-segment (24) is less than the length of the second sub-segment (25). The second pattern (22) includes at least two longitudinal grooves, which extend from the first sub-segment (24) to the second sub-segment (25) and are evenly distributed on the circumferential surface of the rod.

5. The impression transfer rod for dental implants according to claim 4, characterized in that: The positioning pattern also includes a third pattern (23), which is located between the two second patterns (22). The third pattern (23) is a plane formed by cutting from the bottom of the transfer section (2) to the connecting section (3).

6. The impression transfer rod for dental implants according to claim 4, characterized in that: The end of the first sub-segment (24) away from the connecting segment (4) has a rounded corner shape (26).

7. The impression transfer rod for dental implants according to claim 3, characterized in that: The outer circumference of the connecting segment (4) is a hexagonal plum blossom shape (41).

8. The impression transfer rod for dental implants according to claim 1, characterized in that: The inner circumferential surface of the connecting section (4) is formed with a thread (42) that mates with a screw.

9. An impression transfer rod for dental implants according to claim 6, characterized in that: The surface of the annular platform (31) near the connecting segment (4) is concave to form a connecting surface (43) that mates with the gingival surface.

10. A dental impression transfer assembly, comprising an implant, screws, and a transfer rod, characterized in that, The transfer rod is an impression transfer rod for dental implants as described in any one of claims 1-9, the transfer rod is inserted into the implant, and the screw passes through the through hole (1) and is fixed to the implant.

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