Composite window closing transfer rod

Abstract

The utility model relates to a composite closed window transfer rod, which is arranged on an implant abutment and comprises an impression transfer cap and an impression transfer main body, the impression transfer cap comprises a fixing part and a connecting part, the fixing part is used for fixing impression materials, and the connecting part is provided with a concave first blind hole; the impression transfer main body comprises a clamping part and a rotary connection part, the clamping part is clamped in the first blind hole to connect the impression transfer cap and the impression transfer main body, and the rotary connection part is in threaded connection with the implant abutment, so that the impression transfer cap and the impression transfer main body are fixedly connected with the implant abutment, and window closing transfer and impression taking during false tooth repair are facilitated. The annular groove between the two layers of flanges of the fixing part of the impression transfer cap has a flow guide function and can be better combined with the impression material, the two flat sections of the two layers of flanges have a positioning function, the impression transfer cap is prevented from rotating in the impression material, displacement of the impression transfer cap is avoided, and the precision of window closing transfer and mold taking is improved.

Description

Technical Field

[0001] This utility model relates to the field of dental prosthesis technology, specifically to a composite window-closing transfer rod. Background Technology

[0002] Dental implants are popular because they are stable, durable, convenient, comfortable, and aesthetically pleasing, and do not damage adjacent teeth.

[0003] During denture restoration, after the implant is placed and the abutment is installed, a transfer impression is required to obtain data such as the oral cavity environment and the angles and heights of the implant and abutment. There are generally two types of transfer impressions: open-window and closed-window. When using closed-window impressions, the impression transfer cap is taken out of the mouth along with the impression tray, and it is prone to displacement during movement, thus affecting the accuracy of the closed-window impression. Utility Model Content

[0004] Therefore, it is necessary to provide a composite window-closing transfer rod that can avoid rotation and displacement and has a simple structure.

[0005] A composite closed-window transfer rod, installed on an implant abutment, includes an impression transfer cap and an impression transfer body. The impression transfer cap includes a fixing part and a connecting part. The fixing part is used to fix the impression material, and the connecting part has a concave first blind hole. The impression transfer body includes a snap-fit ​​part and a screw-fit part. The snap-fit ​​part is snapped into the first blind hole to connect the impression transfer cap and the impression transfer body. The screw-fit part is threaded to the implant abutment, so that the impression transfer cap and the impression transfer body are fixedly connected to the implant abutment to facilitate closed-window transfer impression taking during prosthetic restoration.

[0006] Preferably, the impression transfer cap is a hollow cylindrical shape, the fixing part is located in the upper half of the impression transfer cap, the connecting part is located in the lower half of the impression transfer cap, the first blind hole is coaxial with the impression transfer cap, and the opening of the first blind hole points to the bottom of the connecting part.

[0007] Preferably, the fixing part has two flanges, the diameter of which is larger than the diameter of the connecting part, and an annular groove is formed between the two flanges.

[0008] Preferably, the two flanges include a first flange and a second flange arranged sequentially from top to bottom, and the annular groove is disposed between the first flange and the second flange, and the annular groove has an arc-shaped sidewall.

[0009] Preferably, the top surface of the first flange is a plane, and the bottom surface of the first flange is a downwardly convex arc surface; the top surface of the second flange is an upwardly convex arc surface, and the bottom surface of the second flange is a plane.

[0010] Preferably, the first flange and the second flange each have two opposing planar surfaces, which are vertically opposite to each other. The distance between the two planar surfaces on both sides of the first flange and the second flange is less than the diameter of the flange and greater than the diameter of the connecting portion.

[0011] Preferably, the inner wall of the first blind hole includes a first segment and a second segment arranged sequentially from top to bottom, the inner diameter of the first segment is smaller than the inner diameter of the second segment, and the opening end of the first blind hole has an inclined first conical guide surface.

[0012] Preferably, the diameter of the snap-fit ​​part is smaller than the diameter of the screw-fit part, the top of the snap-fit ​​part has a concave internal hexagonal blind hole, the snap-fit ​​part includes a snap-fit ​​end, a support section and a guide section arranged sequentially from top to bottom, the bottom surface of the snap-fit ​​part adopts an inclined second conical guide surface, after the snap-fit ​​part is snapped into the connecting part, the second conical guide surface and the first conical guide surface are tightly fitted together.

[0013] Preferably, the diameter of the engaging end is larger than the diameter of the supporting section, and the outer wall of the engaging end is arc-shaped; the guide section has a tapered inclined surface, and the diameter of the tapered inclined surface is larger than the diameter of the supporting section.

[0014] Preferably, the screw-on part has a second blind hole, which is coaxial with the impression transfer body. A central bolt is provided at the bottom center of the second blind hole, and the height of the central bolt is the same as the depth of the second blind hole. The inner wall of the second blind hole is tapered.

[0015] In the aforementioned composite window-closing transfer rod, the annular groove between the two flanges of the fixing part of the impression transfer cap has a guiding function, enabling better bonding with the impression material. The two flat surfaces of the two flanges serve a positioning function, preventing the impression transfer cap from rotating within the impression material and avoiding displacement, thus improving the accuracy of the window-closing transfer and impression taking. This utility model has a simple structure, is easy to implement, has low cost, and is easy to promote. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the composite window-closing transfer rod according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the imprint transfer cap of the composite closed window transfer rod according to an embodiment of this utility model.

[0018] Figure 3 This is a cross-sectional view of the impression transfer cap of the composite closed window transfer rod according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the imprint transfer body of the composite closed window transfer rod according to an embodiment of this utility model.

[0020] Figure 5 This is a cross-sectional view of the imprint transfer body of the composite closed window transfer rod according to an embodiment of this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the planting base according to an embodiment of the present invention.

[0022] Figure 7 This is a cross-sectional view of the planting base according to an embodiment of the present invention. Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0024] Please see Figures 1 to 5 The image shows a composite closed-window transfer rod 100, mounted on an implant abutment. It includes an impression transfer cap 10 and an impression transfer body 20. The impression transfer cap 10 includes a fixing part 11 and a connecting part 12. The fixing part 11 is used to fix the impression material, and the connecting part 12 has a recessed first blind hole 121. The impression transfer body 20 includes a snap-fit ​​part 21 and a screw-fit part 22. The snap-fit ​​part 21 is engaged within the first blind hole 121 to connect the impression transfer cap 10 and the impression transfer body 20. The screw-fit part 22 is threaded onto the implant abutment 200, thus fixing the impression transfer cap 10 and the impression transfer body 20 to the implant abutment 200 for convenient closed-window transfer impression taking during prosthetic restoration.

[0025] Specifically, the outer diameter of the connecting part 12 of the impression transfer cap 10 and the outer diameter of the screw-on part 22 of the impression transfer body 20 are the same as the outer diameter of the top end of the implantation base 200, so that after the impression transfer body 20 is snapped into the impression transfer cap 10, it is spirally connected to the implantation base 200. The outer side wall of the connecting part 12 of the impression transfer cap 10 and the outer side wall of the screw-on part 22 of the impression transfer body 20 are connected and connected to the outer side wall of the top end of the implantation base 200.

[0026] Preferably, the impression transfer cap 10 is a hollow cylindrical shape, the fixing part 11 is located in the upper half of the impression transfer cap 10, the connecting part 12 is located in the lower half of the impression transfer cap 10, the first blind hole 121 is coaxial with the impression transfer cap 10, and the opening of the first blind hole 121 points to the bottom of the connecting part 12.

[0027] Preferably, the fixing part 11 has two flanges, the diameter of which is larger than the diameter of the connecting part 12, and an annular groove 113 is provided between the two flanges.

[0028] Preferably, the two flanges include a first flange 111 and a second flange 112 arranged sequentially from top to bottom, and the annular groove 113 is disposed between the first flange 111 and the second flange 112, and the annular groove 113 has an arc-shaped sidewall.

[0029] Specifically, the cross-section of the annular groove 113 is an inverted trapezoid, with the width of the groove opening greater than the width of the groove bottom. The arc-shaped sidewalls have a guiding function, allowing the fluid impression material to wrap around the impression transfer cap 10, and enabling the annular groove 113 to better bond with the impression material. Simultaneously, the annular groove 113 also facilitates the smooth winding and fixation of the resin rod or connecting wire, providing a rigid connection function for edentulous jaw transfer.

[0030] Preferably, the top surface of the first flange 111 is a plane, and the bottom surface of the first flange 111 is a downwardly convex arc surface; the top surface of the second flange 112 is an upwardly convex arc surface, and the bottom surface of the second flange 112 is a plane.

[0031] Preferably, the first flange 111 and the second flange 112 each have two opposing planar surfaces 114, which are vertically opposite to each other. The distance between the two planar surfaces 114 on both sides of the first flange 111 and the second flange 112 is less than the diameter of the flange and greater than the diameter of the connecting portion 12.

[0032] Specifically, an annular groove 113 is provided between the upper and lower flat surfaces 114, and the first flange 111 and the second flange 112 are symmetrically arranged with the annular groove 113 as the central axis. The flat surfaces 114 are used for positioning the impression transfer cap 10 to prevent the impression transfer cap 10 from rotating or shifting in the impression material.

[0033] Preferably, the inner wall of the first blind hole 121 includes a first segment 122 and a second segment 123 arranged sequentially from top to bottom. The inner diameter of the first segment 122 is smaller than the inner diameter of the second segment 123. The opening end of the first blind hole 121 has an inclined first conical guide surface 124.

[0034] Preferably, the diameter of the snap-fit ​​portion 21 is smaller than the diameter of the screw-fit portion 22. The top end of the snap-fit ​​portion 21 has a concave internal hexagonal blind hole 211. The snap-fit ​​portion 21 includes a snap-fit ​​end 212, a support section 213, and a guide section 214 arranged sequentially from top to bottom. The bottom surface of the snap-fit ​​portion 21 adopts an inclined second conical guide surface 215. After the snap-fit ​​portion 21 is snapped into the connecting portion 12, the second conical guide surface 215 is in close contact with the first conical guide surface 124.

[0035] Preferably, the diameter of the engaging end 212 is larger than the diameter of the supporting section 213, and the outer wall of the engaging end 212 is arc-shaped; the guide section 214 has a tapered inclined surface, and the diameter of the tapered inclined surface is larger than the diameter of the supporting section 213. When the impression transfer cap 10 is engaged with the impression transfer body 20, the tapered inclined surface plays a guiding role.

[0036] Specifically, in this embodiment, the first segment 122 of the first blind hole 121 adopts an internal hexagonal structure, and the second segment 123 adopts a cylindrical structure. The outer diameter of the engaging end 212 is adapted to the inner diameter of the first segment 122, and the diameter of the tapered inclined surface is adapted to the inner diameter of the second segment 123. During engagement, the engaging part 21 of the impression transfer body 20 is inserted into the connecting part 12 of the impression transfer cap 10. The engaging part 21 and the connecting part 12 adopt a transition fit, so that the impression transfer body 20 and the impression transfer cap 10 have good alignment and coaxiality, and are easy to disassemble and assemble.

[0037] Preferably, the screw-on part 22 has a second blind hole 221, which is coaxial with the impression transfer body 20. A central bolt 222 is provided at the bottom center of the second blind hole 221. The height of the central bolt 222 is the same as the depth of the second blind hole 221. The inner wall of the second blind hole 221 is tapered.

[0038] Specifically, the slope of the inner wall of the second blind hole 221 is adapted to the slope of the top end of the implantation abutment 200. The structure of the screw-on part 22 is adapted to the top end structure of the implantation abutment 200 to realize the connection between the impression transfer body 20 and the implantation abutment 200. In this embodiment, please refer to... Figure 6 and Figure 7 The top of the implantation base 200 has a conical platform 201 with a threaded hole 202. Therefore, the central bolt 222 is housed within the screw-on portion 22 of the impression transfer body 20, and the inner wall of the second blind hole 221 is a tapered bevel to achieve the implantation base 200. In other embodiments, the screw-on portion 22 of the impression transfer body 20 may employ other structures adapted to the top of the implantation base 200.

[0039] During impression taking, firstly, the impression transfer body 20 is rotated to the implant abutment 200 via the central bolt 222. A hex wrench can be used to tighten the impression transfer body 20 through the internal hexagonal blind hole 211 at the top of the locking part 21. Then, the impression transfer cap 10 is fastened to the top of the impression transfer body 20. A closed-window impression tray is used, and silicone rubber impression material is injected. After the impression material has cured, the impression tray is removed from the oral cavity, and the impression transfer cap 10 is taken out of the oral cavity along with the impression. Finally, using a hex wrench, the impression transfer body 20 is removed, and the impression transfer body 20 is inserted into the impression transfer cap 10.

[0040] During closed-window transfer and impression taking, there is no need to separate the impression transfer cap 10 from the impression material, thus avoiding damage to the integrity of the impression material. The impression transfer body 20 is then reinserted into the impression material to achieve the purpose of positioning the implantation abutment 200 at the correct angle and height, thereby improving the accuracy of closed-window impression taking.

[0041] In the aforementioned composite window-closing transfer rod 100, the annular groove 113 between the two flanges of the fixing part 11 of the impression transfer cap 10 has a guiding function, enabling better bonding with the impression material. The two flat cut surfaces 114 of the two flanges serve a positioning function, preventing the impression transfer cap 10 from rotating within the impression material and avoiding displacement, thus improving the accuracy of the window-closing transfer and impression taking. This utility model has a simple structure, is easy to implement, has low cost, and is easy to promote.

[0042] It should be noted that this utility model is not limited to the above-described embodiments. Based on the inventive spirit of this utility model, those skilled in the art can make other changes, and these changes made based on the inventive spirit of this utility model should be included within the scope of protection claimed by this utility model.

Claims

1. A composite closed-window transfer rod, installed on a planting base, characterized in that, The device includes an impression transfer cap and an impression transfer body. The impression transfer cap includes a fixing part and a connecting part. The fixing part is used to fix the impression material, and the connecting part has a concave first blind hole. The impression transfer body includes a snap-fit ​​part and a screw-fit part. The snap-fit ​​part is snapped into the first blind hole to connect the impression transfer cap and the impression transfer body. The screw-fit part is threaded to the implant abutment, so that the impression transfer cap and the impression transfer body are fixedly connected to the implant abutment to facilitate closed-window transfer impression taking during prosthetic restoration.

2. The composite window closing transfer rod as described in claim 1, characterized in that, The impression transfer cap is a hollow cylindrical shape. The fixing part is located in the upper half of the impression transfer cap, and the connecting part is located in the lower half of the impression transfer cap. The first blind hole is coaxial with the impression transfer cap, and the opening of the first blind hole points to the bottom of the connecting part.

3. The composite window closing transfer rod as described in claim 1, characterized in that, The fixing part has two flanges, the diameter of which is larger than the diameter of the connecting part, and there is an annular groove between the two flanges.

4. The composite window closing transfer rod as described in claim 3, characterized in that, The two flanges include a first flange and a second flange arranged sequentially from top to bottom, and the annular groove is disposed between the first flange and the second flange, and the annular groove has an arc-shaped sidewall.

5. The composite window closing transfer rod as described in claim 4, characterized in that, The top surface of the first flange is a flat surface, and the bottom surface of the first flange is a downwardly convex arc surface; the top surface of the second flange is an upwardly convex arc surface, and the bottom surface of the second flange is a flat surface.

6. The composite window closing transfer rod as described in claim 4, characterized in that, The first flange and the second flange each have two opposing planar surfaces, which are vertically opposite to each other. The distance between the two planar surfaces on both sides of the first flange and the second flange is less than the diameter of the flange and greater than the diameter of the connecting portion.

7. The composite window closing transfer rod as described in claim 1, characterized in that, The inner wall of the first blind hole includes a first segment and a second segment arranged sequentially from top to bottom. The inner diameter of the first segment is smaller than the inner diameter of the second segment. The opening end of the first blind hole has an inclined first conical guide surface.

8. The composite window closing transfer rod as described in claim 7, characterized in that, The diameter of the snap-fit ​​part is smaller than the diameter of the screw-fit part. The top of the snap-fit ​​part has a concave internal hexagonal blind hole. The snap-fit ​​part includes a snap-fit ​​end, a support section and a guide section arranged sequentially from top to bottom. The bottom surface of the snap-fit ​​part adopts an inclined second conical guide surface. After the snap-fit ​​part is snapped into the connecting part, the second conical guide surface and the first conical guide surface are tightly fitted together.

9. The composite window closing transfer rod as described in claim 8, characterized in that, The diameter of the engaging end is larger than the diameter of the supporting section, and the outer wall of the engaging end is arc-shaped; the guide section has a tapered inclined surface, and the diameter of the tapered inclined surface is larger than the diameter of the supporting section.

10. The composite window closing transfer rod as described in claim 1, characterized in that, The screw joint has a second blind hole, which is coaxial with the impression transfer body. A central bolt is provided at the bottom center of the second blind hole. The height of the central bolt is the same as the depth of the second blind hole. The inner wall of the second blind hole is tapered.

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