Positioning tray

Abstract

The utility model relates to positioning tray, including the holding part and loading part connected in proper order along the holding direction, one side of loading part forms the loading area of U shape, a plurality of through -holes are seted up in loading part corresponding loading area, three mounting holes are seted up in loading part corresponding loading area, and three mounting holes are inverted triangle shape distribution along the holding direction, set up the locating ball in mounting hole. This positioning tray, through three locating balls inverted triangle distribution on loading part, can be used as stable reference point to compare and correct the CT data obtained, effectively avoids the guide plate error caused by the equipment precision deviation, thereby reduces the implantation deviation and the operation risk, under the action of U shape loading area, to the higher adhesion and stability of the higher adhesion and stability of the higher adhesion and stability of the higher adhesion and the stability of the higher adhesion and the stability of the higher adhesion and the stability of the harder, improves the mechanical inlay of the tray after the hardening of silica gel, improves the fixity of the position when taking the photograph, guarantees the data precision.

Description

Technical Field

[0001] This utility model relates to the field of dental implant instruments, specifically a positioning tray. Background Technology

[0002] In the field of dental implantology, CT (computed tomography) imaging data is a key basis for preoperative diagnosis, implant selection, and surgical guide design. During dental implant restoration, CT imaging data is used to diagnose the patient's alveolar bone implantation conditions, select implants, and design implant guides.

[0003] In existing technologies, CT equipment often lacks a complete accuracy monitoring and calibration recovery mechanism after leaving the factory. With the increase of usage time, or due to unnoticed external influences and equipment damage, the data obtained from CT scans may gradually produce errors. Taking dental implants as an example, when obtaining CT data of a patient's teeth, only the tooth area is usually scanned, lacking additional reference information. This makes it difficult to have a reliable basis for comparison when correcting CT data later. If CT data with errors is used directly to design and manufacture implant guides, it will not only affect the accurate placement of the guide in the patient's mouth, but may also cause deviations between the implant cavity formed under the guidance of the guide and the ideal position. The result is not only reduced patient comfort and doctor's operating efficiency, but in more serious cases, it may also cause deviations in the drilling direction or depth of the implant, thereby causing serious surgical risks such as bone wall penetration and nerve canal damage.

[0004] Therefore, a positioning tray is proposed to solve the problem of lack of reference data when correcting patient's dental CT data. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a positioning tray that solves the problem of lacking reference data when correcting patient dental CT data.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a positioning tray, comprising a gripping part and a loading part connected sequentially along the gripping direction, wherein a U-shaped loading area is formed on one side of the loading part, a plurality of through holes are provided on the loading part corresponding to the loading area, and three mounting holes are provided on the loading part corresponding to the loading area, wherein the three mounting holes are distributed in an inverted triangular shape along the gripping direction, and a positioning ball is provided in the mounting hole.

[0007] Preferably, the positioning ball is a steel ball, and the gripping part and the loading part are both made of carbon fiber sheet.

[0008] Preferably, the other side of the loading part is provided as an assembly surface, and a scraping unit is provided on the assembly surface corresponding to several through holes.

[0009] Preferably, the scraping unit includes a slider and a scraper block. The mounting surface has a groove along the distribution direction of a plurality of through holes. The scraper block is disposed in the groove. The scraper block is connected to the groove through the slider, and the slider moves between the scraper block and the groove. In the working state, the scraper block is located outside the groove and abuts against the mounting surface. In the working state, the scraper block rotates around the slider as the axis and covers the through holes.

[0010] Preferably, the slider includes a first limiting part, a connecting part and a second limiting part connected in sequence. The first limiting part is located in the slide groove, and a recessed groove is provided in the slide groove corresponding to the first limiting part. The first limiting part is slidably connected in the recessed groove. The scraper block is a cuboid with a hollow interior and a sliding hole along its length on the side facing the assembly surface. The end of the connecting part away from the first limiting part extends into the scraper block. The connecting part is slidably connected in the sliding hole, and the second limiting part is slidably connected in the scraper block.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects: This positioning tray, with three positioning balls arranged in an inverted triangle in the loading section, serves as a stable reference point for comparing and correcting acquired CT data. This effectively avoids guide plate errors caused by equipment precision deviations, thereby reducing implant preparation deviations and surgical risks. Simultaneously, the U-shaped loading area conforms to the patient's dental arch shape, achieving higher fit and stability during silicone impression taking. Furthermore, the through-hole structure allows the hardened silicone to mechanically interlock with the tray, improving positional stability during imaging and ensuring data accuracy. This achieves precise correction of CT data and high reliability of the guide plate design, enhancing surgical safety and surgeon efficiency, and significantly improving implant restoration outcomes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the assembly part in this utility model; Figure 3 This is a schematic diagram of the internal structure of the slide groove in this utility model; Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 This is a schematic diagram of the working state structure of the scraper block in this utility model; Figure 6 This is a schematic diagram of the disassembled structure of the scraper and the second limiting part in this utility model; Figure 7 This is a schematic diagram showing the positional distribution of the positioning ball CT scan in this utility model.

[0013] The reference numerals in the attached drawings are as follows: 1. Loading part; 11. Loading area; 12. Assembly surface; 13. Slide groove; 14. Recessed groove; 15. Through hole; 16. Mounting hole; 161. Positioning ball; 2. Push scraping unit; 21. Slider; 211. First limiting part; 212. Connecting part; 213. Second limiting part; 22. Scraper block; 221. Slide hole; 3. Grip part. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1: Please see Figure 1-6 The positioning tray in this embodiment includes a gripping part 3 and a loading part 1 connected sequentially along the gripping direction. A U-shaped loading area 11 is formed on one side of the loading part 1. A plurality of through holes 15 are opened on the loading part 1 corresponding to the loading area 11. Three mounting holes 16 are opened on the loading part 1 corresponding to the loading area 11, and the three mounting holes 16 are distributed in an inverted triangle shape along the gripping direction. A positioning ball 161 is provided in the mounting hole 16.

[0016] In application, silicone is first coated on the loading area 11 of the loading part 1, and the loading part 1 is sent into the patient's mouth through the holding part 3. The patient then bites down on the silicone. After the silicone has successfully hardened, the patient's teeth are then photographed using a CT device to obtain CT data. In the scanned CT data, the corresponding position of the positioning ball 161 can be observed, and the position of the positioning ball 161 in the CT data can be used as reference data to assist in correcting the CT data.

[0017] It should be noted that the positioning ball 161 located on the assembly part is set in a position that matches the known standard size. When there is a deviation in the CT data, the position of the positioning ball 161 in the acquired CT data will also deviate from the known standard size. By comparing the two, the acquired CT data can be corrected.

[0018] Specifically, the positioning ball 161 is a steel ball, and both the gripping part 3 and the loading part 1 are made of carbon fiber sheet, with the gripping direction facing the user.

[0019] It is understandable that both the gripping part 3 and the loading part 1 are made of carbon fiber sheets to form the main body of the positioning tray. The carbon fiber sheets serve as the positioning and support base for the positioning ball 161, and have stable dimensions and accuracy, as well as sufficient strength. Moreover, because of its low density, the carbon fiber sheets will not have any impact on CT imaging. In addition, the steel ball, which serves as the positioning ball 161, has a high density, and a clear three-dimensional image of the positioning ball 161 can be obtained in CT imaging for information transmission.

[0020] It should also be noted that by coating the loading area 11 with silicone, and with the action of the through hole 15 in the loading area 11, the silicone can protrude from the through hole 15 when the patient bites down on it. When the silicone protrudes from the through hole 15, this part of the silicone, together with the through hole 15, can more effectively connect the silicone with the assembly part, thereby improving stability and ensuring that the error of CT data is minimized during CT imaging.

[0021] It is important to emphasize that the three positioning balls 161 are arranged in an inverted triangle shape, which not only helps to provide multi-angle references in CT images, but also provides a basis for spatial coordinate calibration in three-dimensional reconstruction, enhancing the adaptability to complex oral structures. At the same time, the U-shaped loading area 11 fits the human dental arch shape better, improving patient comfort and also improving the accuracy of silicone impression taking.

[0022] Example 2: The basic content is the same as in Example 1, except that: Please see Figure 2-6 In this embodiment, the other side of the loading part 1 is set as the assembly surface 12, and the assembly surface 12 is provided with a push scraping unit 2 corresponding to a plurality of through holes 15.

[0023] It is known that after the silicone is bitten by the patient, some silicone will protrude from the through hole 15. When the silicone hardens, this part of the silicone, together with the through hole 15, can form a mechanical lock, thereby making the hardened silicone tightly connected to the assembly part. However, after the hardened silicone is tightly connected to the assembly part, it is inconvenient to remove it from the assembly part later, and if it is removed in advance, it is easy to damage the hardened silicone. Therefore, by scraping the hardened silicone protruding from the through hole 15 by the scraping unit 2, the mechanical lock between the hardened silicone and the assembly part can be solved, so as to facilitate the separation of the hardened silicone from the assembly part.

[0024] Furthermore, such as Figure 4As shown, the scraping unit 2 includes a slider 21 and a scraper 22. The mounting surface 12 has a groove 13 along the distribution direction of a plurality of through holes 15. The scraper 22 is disposed in the groove 13. The scraper 22 is connected to the groove 13 through the slider 21, and the slider 21 moves between the scraper 22 and the groove 13. In the working state, the scraper 22 is located outside the groove 13 and abuts against the mounting surface 12. In the working state, the scraper 22 rotates around the slider 21 as the axis and covers the through holes 15.

[0025] It should be noted that after the silicone is bitten and squeezed by the patient, some silicone will protrude from the through hole 15 and extend onto the mounting surface 12. After this part of the silicone hardens, it will form a mechanical lock. At this time, the hardened silicone on the mounting surface 12 can be scraped off by the cooperation of the scraper 22 and the slider 21 to eliminate the mechanical lock.

[0026] In application, after the protruding silicone on the assembly surface 12 has hardened, the scraper 22 can be rotated to move on the assembly surface 12. When the scraper 22 is rotated, it can remove the protruding hardened silicone. At the same time, since the through holes 15 are distributed along the assembly area in a U-shape, the slide groove 13 along the distribution direction of the through holes 15 can allow the scraper 22 to move along the slide groove 13 under the action of the slider 21. This allows the scraper 22 to cover all the through holes 15, effectively remove all the protruding hardened silicone, and eliminate mechanical locking, so that the hardened silicone can be separated from the assembly part.

[0027] It is understood that after eliminating the mechanical locking between the hardened silicone and the assembly surface 12, the hardened silicone can be easily separated from the assembly area, allowing the hardened silicone to be removed from the assembly part, and avoiding damage to the hardened silicone when overcoming the mechanical locking to remove it.

[0028] Understandably, removing the hardened silicone from the assembly section without damage can prevent discrepancies between the tooth model made from the hardened silicone and the patient's tooth model, thus ensuring the accuracy of the surgical guide subsequently manufactured.

[0029] Furthermore, such as Figure 6 As shown, the slider 21 includes a first limiting part 211, a connecting part 212, and a second limiting part 213 connected in sequence. The first limiting part 211 is located in the slide groove 13, and a recessed groove 14 is provided in the slide groove 13 corresponding to the first limiting part 211. The first limiting part 211 is slidably connected in the recessed groove 14. The scraper block 22 is a cuboid with a hollow interior and a sliding hole 221 provided along its length on the side facing the mounting surface 12. The end of the connecting part 212 away from the first limiting part 211 extends into the scraper block 22. The connecting part 212 is slidably connected in the sliding hole 221. The second limiting part 213 is slidably connected in the scraper block 22.

[0030] It should be noted that when the scraper 22 moves, the first limiting part 211 moves within the recessed groove 14 and the second limiting part 213 moves within the scraper 22. The cooperation between the first limiting part 211 and the second limiting part 213 allows the scraper 22 to move along the sliding groove 13 and along the sliding hole 221, thereby increasing the coverage area of ​​the scraper 22 and enabling the scraper 22 to remove all protruding hardened silicone, thus improving its practicality.

[0031] It should also be noted that the slide groove 13 and the recessed groove 14 ensure that the slider 21 and the scraper 22 move along the preset path of the slide groove 13 without wobbling left and right or accidentally coming out of the slide groove 13, so that the scraper 22 can achieve reliable scraping.

[0032] It should be emphasized that the connecting part 212 can slide within the sliding hole 221, and the second limiting part 213 slides within the cavity of the scraper block 22, so that the relative position of the scraper block 22 with respect to the connecting part 212 can change. This allows the scraper block 22 to not only move along the sliding groove 13, but also to make certain adjustments to ensure that the scraper block 22 can effectively cover and clean multiple through holes 15 that are not on an absolute straight line, ensuring that all overflowing silicone can be cleaned without any blind spots.

[0033] It is known that, as Figure 4 As shown, the width of the scraper 22 is adapted to the width of the inner cavity of the groove 13. Under normal conditions, the scraper 22 is placed in the groove 13 and the internal space of the groove 13 is used to store the scraper 22, so as to avoid the scraper 22 causing discomfort to the patient when the loading part 1 is placed in the patient's mouth. In addition, the outer diameter of the second limiting part 213 is larger than the width of the inner cavity of the sliding hole 221. With the cooperation of the second limiting part 213 and the sliding hole 221, and the cooperation of the first limiting part 211 and the recessed groove 14, the scraper 22 and the groove 13 can be stably connected.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A positioning tray, characterized in that: It includes a gripping part (3) and a loading part (1) connected sequentially along a first direction. A U-shaped loading area (11) is formed on one side of the loading part (1). A plurality of through holes (15) are opened on the loading part (1) corresponding to the loading area (11). Three mounting holes (16) are opened on the loading part (1) corresponding to the loading area (11), and the three mounting holes (16) are distributed in an inverted triangle shape along the first direction. A positioning ball (161) is provided in the mounting hole (16).

2. The positioning tray according to claim 1, characterized in that: The positioning ball (161) is a steel ball, and the gripping part (3) and the loading part (1) are both made of carbon fiber plates.

3. The positioning tray according to claim 1, characterized in that: The other side of the loading part (1) is set as the assembly surface (12), and the assembly surface (12) is provided with a push scraping unit (2) corresponding to a plurality of through holes (15).

4. The positioning tray according to claim 3, characterized in that: The scraping unit (2) includes a slider (21) and a scraper (22). The assembly surface (12) has a groove (13) along the distribution direction of a plurality of through holes (15). The scraper (22) is disposed in the groove (13). The scraper (22) is connected to the groove (13) through the slider (21), and the slider (21) moves between the scraper (22) and the groove (13). In the working state, the scraper (22) is located outside the groove (13) and abuts against the assembly surface (12). In the working state, the scraper (22) rotates around the slider (21) as the axis and covers the through holes (15).

5. The positioning tray according to claim 4, characterized in that: The slider (21) includes a first limiting part (211), a connecting part (212) and a second limiting part (213) connected in sequence. The first limiting part (211) is located in the slide groove (13), and a recessed groove (14) is provided in the slide groove (13) corresponding to the first limiting part (211). The first limiting part (211) is slidably connected in the recessed groove (14). The scraper block (22) is a cuboid with a hollow interior and a sliding hole (221) along its length on the side facing the assembly surface (12). The end of the connecting part (212) away from the first limiting part (211) extends into the scraper block (22). The connecting part (212) is slidably connected in the sliding hole (221), and the second limiting part (213) is slidably connected in the scraper block (22).

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