3D printing metal guide plate with self-locking structure
By using a 3D-printed metal guide plate with a self-locking structure, the guide plate and guide ring are integrally formed. The use of titanium alloy material and L-shaped grooves for self-locking solves the problems of guide plate deformation and placement error during sterilization, achieving high precision and stability of the implant.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN UNIV
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-29
AI Technical Summary
Existing 3D printed guide plates are prone to deformation during sterilization, the guide rings have large placement errors, and the implant position is prone to displacement. Traditional metal pressure plates exert lip pressure on the implant platform, leading to errors.
The 3D-printed metal guide plate with a self-locking structure is integrally formed with the guide ring. It is made of titanium alloy and has an L-shaped groove inside the guide ring that cooperates with the locking protrusion to achieve self-locking and fixation. After sterilization, the deformation is small and the rotation direction is consistent with the drill bit to prevent loosening.
It reduces errors during implant placement, improves implantation accuracy, avoids errors in guide ring placement and sterilization deformation, prevents implant platform movement, and ensures implant position stability.
Smart Images
Figure CN224292027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dental auxiliary medical device technology, and more specifically to the field of 3D printed metal guide plate technology with a self-locking structure. Background Technology
[0002] Currently, the mainstream types of 3D printed guide plates include resin guide plates printed using LCD, DLP, and SLA technologies, as well as 3D printed titanium alloy metal guide plates. Previous research has shown that metal guide plates printed using technologies such as SLM most closely resemble the computer model, exhibiting the highest replication accuracy, while resin guide plates have lower replication accuracy. Existing patents disclose the following technologies:
[0003] The patent with publication number CN115737095A, entitled "A Personalized Maxillofacial Bone Plate Based on 3D Printing Technology and Its Manufacturing Method," discloses the following: It includes an upper bone plate, a connecting plate, and a lower bone plate connected sequentially. One end of the upper bone plate is connected to one end of the connecting plate at an arbitrary angle, and one end of the lower bone plate is connected to the other end of the connecting plate at an arbitrary angle. The upper and lower bone plates have a plurality of holes of a fixed number, size, and shape. The personalized maxillofacial bone plate widens in shape and size at the locations with the fixing holes to accommodate fixing screws. The personalized maxillofacial bone plate is integrally molded, with each piece designed and manufactured independently. The personalized maxillofacial bone plate has an anatomical surface that matches the bone surface, allowing for precise fixation of the maxilla and mandible, providing positioning and navigation functions. Simultaneously, it can reduce manufacturing costs, eliminate the step of bending the bone plate during surgery, and avoid adverse consequences such as metal fatigue, coating peeling, and stress concentration.
[0004] During the use of the surgical guide, the guide ring needs to be placed inside. The difference between the diameter of the guide plate and the diameter of the guide ring is called compensation. The existence of compensation can cause errors in the placement of the guide ring. During the sterilization process, sterilization methods such as iodine, high temperature and high pressure, and plasma sterilization can all cause deformation of the guide plate. At the same time, the metal clamp used in implant surgery will exert pressure on the labial side of the implant platform, causing the platform to shift towards the labium and thus moving the implant position. Utility Model Content
[0005] The purpose of this utility model is to provide a 3D printed metal guide plate with a self-locking structure in order to solve the above-mentioned technical problems.
[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0007] This utility model provides a 3D-printed metal guide plate with a self-locking structure. The metal guide plate is a 3D-printed metal guide plate, including a guide plate body installed on the maxillary teeth or mandibular teeth and a guide ring disposed on the guide plate body. The guide plate body and the guide ring are integrally formed. A self-locking structure is provided inside the guide ring, and a pressure plate is fixed inside the guide ring by the self-locking structure.
[0008] Specifically, current mainstream implant systems require the placement of guide rings, which are made of metal. The metal guide plate in this application integrates the guide plate and guide ring into one unit, eliminating the need to insert the guide ring into the guide plate and avoiding potential errors caused by guide plate compensation. The self-locking guide plate in this solution is a 3D-printed metal guide plate, offering the advantage of high replication accuracy.
[0009] In one embodiment, both the guide plate body and the guide ring are made of titanium alloy.
[0010] Specifically, to minimize the deformation of the guide plate body and the guide ring caused by disinfection, a corrosion-resistant material is selected. Titanium alloy exhibits excellent corrosion resistance, forming a dense oxide film on its surface that resists seawater, chloride ions, and acid / alkali corrosion, demonstrating superior corrosion resistance compared to stainless steel. This material also results in minimal deformation due to disinfection.
[0011] In one embodiment, the self-locking structure is a self-locking component disposed on the inner hole sidewall of the guide ring. The self-locking component is an L-shaped groove, which includes an axial groove disposed along the axial direction on the inner hole sidewall of the guide ring and a circumferential groove disposed along the circumferential direction on the inner hole sidewall of the guide ring. The circumferential groove communicates with the end of the axial groove.
[0012] The upper end of the axial groove extends through the front end of the inner hole of the guide ring, while the rear end of the axial groove does not extend through the rear end of the inner hole of the guide ring.
[0013] In one embodiment, the length of the axial groove is 1mm-10mm.
[0014] In one embodiment, the length of the circumferential groove is 5%-100% of the circumference of the inner hole of the guide ring.
[0015] In one embodiment, the pressure plate is a cylindrical structure, and a locking protrusion is provided on the outer wall of the pressure plate to cooperate with the L-shaped groove. The locking protrusion is located in the radial direction of the pressure plate, and the width of the locking protrusion is smaller than the width of the L-shaped groove.
[0016] Specifically, the pressure plate is placed inside the guide ring, and the locking protrusion enters from the front opening of the L-shaped groove and stops at the corner of the L-shaped groove inside the guide ring. The L-shaped groove inside the guide ring hole matches the locking protrusion, which can fix the pressure plate in the guide ring hole by self-locking, avoiding the lip pressure originally generated by the pressure plate and preventing errors caused by the movement of the implant platform.
[0017] In one embodiment, there is no gap between the outer wall of the pressure plate and the inner wall of the guide ring.
[0018] In one embodiment, the width difference between the locking protrusion and the L-shaped groove is 0.1mm-1.5mm.
[0019] In one embodiment, the circumferential groove is disposed in the clockwise direction of the axial groove.
[0020] Specifically, since the circumferential groove is located in the clockwise direction of the axial groove, the pressure plate rotates clockwise, which is consistent with the rotation direction of the drill bit, thus preventing the pressure plate from loosening due to the rotation of the drill bit.
[0021] The installation process of a 3D-printed metal guide plate with a self-locking structure is as follows:
[0022] S1. First, integrate the guide ring into the guide plate body, making the guide plate and guide ring one piece. There is no need to insert the guide ring into the guide plate, which avoids the error that may be caused by the guide plate compensation. At the same time, the guide plate and guide ring are made of metal, which is not easy to deform after disinfection and sterilization, reducing the error caused by the deformation due to disinfection.
[0023] S2. The pressure plate is placed inside the guide ring, and the locking protrusion enters from the front opening of the L-shaped groove and stops at the corner of the L-shaped groove inside the guide ring. The L-shaped groove inside the guide ring hole matches the locking protrusion, and the pressure plate can be fixed in the guide ring hole by self-locking, avoiding the lip pressure originally generated by the pressure plate and preventing errors caused by the movement of the implant platform.
[0024] S3. To prevent errors caused by the movement of the implant platform, the pressure plate rotates clockwise, which is consistent with the rotation direction of the drill bit, to avoid the pressure plate loosening due to the rotation of the drill bit.
[0025] The steps described above are essential in the traditional guide plate installation process. Inappropriate choices in these steps can lead to a gradual accumulation of errors, ultimately resulting in excessive implant displacement. However, the metal implant guide plate with a self-locking structure proposed in this method minimizes errors throughout these four processes, thus ensuring implantation accuracy.
[0026] The beneficial effects of this utility model are as follows:
[0027] This self-locking guide aims to reduce errors during implant placement. The self-locking guide is a 3D-printed metal guide, ensuring high replication accuracy. It integrates the guide ring and the guide plate directly in the print, eliminating compensation and thus avoiding errors caused by compensation. While plasma gas sterilization (cold sterilization) has the least impact on the guide plate among various sterilization methods, it still causes deformation. This sterilization method causes minimal deformation on the metal guide plate. The guide ring holes in the metal guide plate feature corresponding L-shaped grooves for self-locking and retention of the guide ring. During surgery, there is no pressure applied to the buccal rim or drill shank, preventing impact on the implant and avoiding errors. Attached Figure Description
[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0029] Figure 1 This is a schematic diagram of the structure of a 3D printed metal guide plate with a self-locking structure according to this utility model;
[0030] Figure 2 yes Figure 1 A schematic diagram of the structure where the pressure plate will be installed;
[0031] Figure 3 yes Figure 1 Schematic diagram of the structure after the pressure plate is installed;
[0032] Figure 4 yes Figure 3 A partial view;
[0033] Figure 5 yes Figure 3 Rotate the middle pressure plate 90° clockwise;
[0034] Figure 6 This is a schematic diagram of a 3D-printed metal guide plate with a self-locking structure.
[0035] Figure 7 This is a schematic diagram of a product where the drill bit is inserted into the pressure plate;
[0036] Figure 8 This is a product illustration showing the drill bit inserted into the drill barrel and the entire assembly mounted on the mandibular tooth;
[0037] Reference numerals: 1-guide plate body, 2-guide ring, 3-L-shaped groove, 4-pressure plate, 5-locking protrusion. Detailed Implementation
[0038] To make the technical problems, technical solutions, and technical effects of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0040] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0041] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0042] Example 1
[0043] like Figures 1 to 8 As shown, this embodiment provides a 3D-printed metal guide plate with a self-locking structure. The metal guide plate is a 3D-printed metal guide plate, including a guide plate body 1 installed on the maxillary teeth or mandibular teeth and a guide ring 2 disposed on the guide plate body 1. The guide plate body 1 and the guide ring 2 are integrally formed. The guide ring 2 is provided with a self-locking structure, and the pressure plate 4 is fixed in the guide ring 2 by the self-locking structure.
[0044] Specifically, current mainstream implant systems require the placement of guide ring 2, which is made of metal. The metal guide plate in this application integrates the guide plate and guide ring 2 into one unit, eliminating the need to insert the guide ring 2 into the guide plate and avoiding potential errors caused by guide plate compensation. The self-locking guide plate in this solution is a 3D-printed metal guide plate, offering the advantage of high replication accuracy.
[0045] Example 2
[0046] like Figures 1 to 8 As shown, this embodiment provides a 3D-printed metal guide plate with a self-locking structure. The metal guide plate is a 3D-printed metal guide plate, including a guide plate body 1 installed on the maxillary teeth or mandibular teeth and a guide ring 2 disposed on the guide plate body 1. The guide plate body 1 and the guide ring 2 are integrally formed. The guide ring 2 is provided with a self-locking structure, and the pressure plate 4 is fixed in the guide ring 2 by the self-locking structure.
[0047] Both the guide plate body 1 and the guide ring 2 are made of titanium alloy.
[0048] Specifically, to minimize the deformation of the guide plate body 1 and the guide ring 2 caused by disinfection, a corrosion-resistant material is selected. Titanium alloy has excellent corrosion resistance, forming a dense oxide film on its surface, resisting seawater, chloride ions, and acid and alkali corrosion, and its corrosion resistance is superior to stainless steel. This material selection results in less deformation due to disinfection.
[0049] Example 3
[0050] This embodiment is a further optimization based on embodiment 2, specifically:
[0051] The self-locking structure is a self-locking component provided on the inner hole sidewall of the guide ring 2. The self-locking component is an L-shaped groove 3. The L-shaped groove 3 includes an axial groove provided on the inner hole sidewall of the guide ring 2 along the axial direction and a circumferential groove provided on the inner hole sidewall of the guide ring 2 along the circumferential direction. The end of the circumferential groove is connected to the end of the axial groove.
[0052] The upper end of the axial groove extends through the front end of the inner hole of the guide ring 2, while the rear end of the axial groove does not extend through the rear end of the inner hole of the guide ring 2.
[0053] The length of the axial groove is 1mm-10mm.
[0054] The length of the circumferential groove is 5%-100% of the circumference of the inner hole of the guide ring 2.
[0055] The pressure plate 4 has a cylindrical structure. The outer wall of the pressure plate 4 is provided with a locking protrusion 5 that cooperates with the L-shaped groove 3. The locking protrusion 5 is located in the radial direction of the pressure plate 4, and the width of the locking protrusion 5 is smaller than the width of the L-shaped groove 3.
[0056] Specifically, the pressure plate 4 is placed inside the guide ring 2, and the locking protrusion 5 enters from the front opening of the L-shaped groove 3 and stops at the corner of the L-shaped groove 3 inside the guide ring 2. The L-shaped groove 3 inside the guide ring 2 matches the locking protrusion 5, which can fix the pressure plate 4 in the guide ring 2 hole by self-locking, avoiding the lip pressure originally generated by the pressure plate 4 and preventing errors caused by the movement of the implant platform.
[0057] There is no gap between the outer wall of the pressure plate 4 and the inner wall of the guide ring 2.
[0058] The width difference between the locking protrusion 5 and the L-shaped groove 3 is 0.1mm-1.5mm.
[0059] The circumferential groove is located in the clockwise direction of the axial groove.
[0060] Specifically, since the circumferential groove is located in the clockwise direction of the axial groove, the pressure plate 4 rotates clockwise, which is consistent with the rotation direction of the drill bit, thus preventing the pressure plate 4 from loosening due to the rotation of the drill bit.
[0061] Example 4
[0062] This embodiment is a further optimization based on embodiment 3, specifically:
[0063] The self-ligating metal guide plate is a tooth support guide plate that is placed on the maxillary or mandibular teeth during use. Above the implant site, there is a guide ring 2 structure integrated with the guide ring 2. The inner wall of the guide ring 2 has an L-shaped groove 3 that matches the locking clip on the pressure plate 4. The inner diameter of the guide ring 2 is 5.0 mm, and the inner diameter of the pressure plate 4 is 4.25 mm or 4.28 mm. The axial groove length of the L-shaped groove is approximately 3 mm, and the circumferential groove is a quarter circle. The length of the locking clip is 0.5 mm, not exceeding the width of the stop on the pressure plate 4. When installing the pressure plate 4, a 0.1 mm gap is left between the width of the pressure plate 4 and the L-shaped groove 3 on each side. The pressure plate 4 is installed into the guide ring 2, and after being vertically inserted into the guide ring 2, it is rotated 90° clockwise until it reaches the end of the L-shaped groove 3 of the guide ring 2, thus locking the pressure plate 4 in place within the sleeve to prevent implant displacement due to loosening of the pressure plate 4. During the surgery, the drill bit and implant move vertically in and out of the guide ring 2.
[0064] Example 5
[0065] This embodiment provides a method for installing a 3D printed metal guide plate with a self-locking structure, the process of which is as follows:
[0066] S1. First, integrate the guide ring 2 into the guide plate body 1, making the guide plate and the guide ring 2 a single unit. It is not necessary to insert the guide ring 2 into the guide plate, thus avoiding the error that may be caused by the guide plate compensation. At the same time, the guide plate and the guide ring 2 are made of metal, which is not easy to deform after disinfection and sterilization, reducing the error caused by the deformation due to disinfection.
[0067] S2. The pressure plate 4 is placed inside the guide ring 2, and the locking protrusion 5 enters from the front opening of the L-shaped groove 3 and stops at the corner of the L-shaped groove 3 inside the guide ring 2. The L-shaped groove 3 inside the guide ring 2 matches the locking protrusion 5, and the pressure plate 4 can be fixed in the guide ring 2 hole by self-locking, avoiding the lip pressure originally generated by the pressure plate 4 and preventing errors caused by the movement of the implant platform.
[0068] S3. To prevent errors caused by the movement of the implant platform, the pressure plate 4 rotates clockwise, which is consistent with the rotation direction of the drill bit, to avoid the pressure plate 4 becoming loose due to the rotation of the drill bit.
[0069] The steps described above are essential in the traditional guide plate installation process. Inappropriate choices in these steps can lead to a gradual accumulation of errors, ultimately resulting in excessive implant displacement. However, the metal implant guide plate with a self-locking structure proposed in this method minimizes errors throughout these four processes, thus ensuring implantation accuracy.
Claims
1. A 3D-printed metal guide plate with a self-locking structure, characterized in that, The metal guide plate is a 3D printed metal guide plate, including a guide plate body (1) installed on the maxillary teeth or mandibular teeth and a guide ring (2) set on the guide plate body (1). The guide plate body (1) and the guide ring (2) are integrally formed. A self-locking structure is provided in the guide ring (2). The pressure plate (4) is fixed in the guide ring (2) through the self-locking structure. The self-locking structure is a self-locking assembly disposed on the inner hole sidewall of the guide ring (2); The self-locking component is an L-shaped groove (3), which includes an axial groove arranged along the axial direction on the inner wall of the guide ring (2) and a circumferential groove arranged along the circumferential direction on the inner wall of the guide ring (2). The circumferential groove is connected to the end of the axial groove. The upper end of the axial groove passes through the front end of the inner hole of the guide ring (2), while the rear end of the axial groove does not pass through the rear end of the inner hole of the guide ring (2).
2. A 3D-printed metal guide plate with a self-locking structure according to claim 1, characterized in that, The guide plate body (1) and the guide ring (2) are both made of titanium alloy.
3. A 3D-printed metal guide plate with a self-locking structure according to claim 1, characterized in that, The length of the axial groove is 1mm-10mm.
4. A 3D-printed metal guide plate with a self-locking structure according to claim 1, characterized in that, The length of the circumferential groove is 5%-100% of the circumference of the inner hole of the guide ring (2).
5. A 3D-printed metal guide plate with a self-locking structure according to claim 1, characterized in that, The pressure plate (4) is a cylindrical structure. The outer wall of the pressure plate (4) is provided with a locking protrusion (5) that cooperates with the L-shaped groove (3). The locking protrusion (5) is located in the radial direction of the pressure plate (4). The width of the locking protrusion (5) is smaller than the width of the L-shaped groove (3).
6. A 3D-printed metal guide plate with a self-locking structure according to claim 5, characterized in that, There is no gap between the outer wall of the pressure plate (4) and the inner wall of the guide ring (2).
7. A 3D-printed metal guide plate with a self-locking structure according to claim 5, characterized in that, The width difference between the locking protrusion (5) and the L-shaped groove (3) is 0.1mm-1.5mm.
8. A 3D-printed metal guide plate with a self-locking structure according to claim 1, characterized in that, The circumferential groove is located in the clockwise direction of the axial groove.