A denture label based on RFID technology
By using RFID-based denture tags, the problem of denture identification and management has been solved, enabling accurate identification and real-time tracking of dentures, improving management efficiency and patient health, and providing regular maintenance reminders.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG TAIBAO PREVENTING COUNTERFEIT
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-16
Smart Images
Figure CN224366434U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of RFID technology, specifically to a denture tag based on RFID technology. Background Technology
[0002] Dentures are widely used in oral healthcare and are an important means for patients to restore oral health. However, denture management currently faces numerous challenges. Traditional dentures are difficult to identify and track effectively. When patients encounter damaged, lost, or confused dentures, it is difficult to quickly ascertain their ownership and detailed information, adding inconvenience and costs for patients and increasing the management difficulty for medical institutions. Furthermore, patients who wear dentures for a long time, especially the elderly or those with cognitive impairments, lack effective reminders for regular denture maintenance and replacement, making it impossible to monitor their usage in real time, which affects the lifespan of the dentures and the patient's oral health.
[0003] RFID (Radio Frequency Identification) technology is widely used in many fields. It identifies targets and reads and writes data through radio signals without physical contact. It has advantages such as non-contact identification, fast and long-distance reading, simultaneous identification of multiple tags for batch management, data encryption and security, and adaptability to complex environments (waterproof, anti-magnetic, and high-temperature resistant), providing a new approach to solving denture management problems. Utility Model Content
[0004] To address the technical problems existing in the background art, this utility model provides a denture tag based on RFID technology, which can stably store relevant information about dentures for a long period of time, facilitating denture production management, traceability, and identification and diagnosis during use, thus solving the problems of easy damage and information loss in existing denture identification methods.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] A denture tag based on RFID technology includes:
[0007] First injection molding section;
[0008] RFID tags are installed on the first injection molding section;
[0009] The second injection molding section fills the outer side of the RFID tag;
[0010] RFID tags include:
[0011] Rubber strip;
[0012] The InLay structure is located inside the rubber strip.
[0013] Furthermore, the InLay structure includes:
[0014] InLay substrate;
[0015] A zigzag dipole antenna is disposed inside an InLay substrate;
[0016] The UHF chip is located inside the InLay substrate and is connected to the zigzag dipole antenna.
[0017] Furthermore, the UHF chip is connected to the zigzag dipole antenna via a feed point located inside the InLay substrate.
[0018] Furthermore, the ends of the zigzag dipole antenna adopt a rectangular structure.
[0019] Furthermore, the zigzag dipole antenna has a length of 13mm, a width of 4.5mm, and a bending interval of 2mm.
[0020] Furthermore, the rectangular design has a length of 12 mm.
[0021] Furthermore, the rubber strip is made of medical-grade silicone rubber.
[0022] Furthermore, the InLay substrate is made of medical-grade PET material. The PET thickness is 50μm, and the substrate thickness is 80μm.
[0023] Furthermore, the first and second injection molding sections are made of thermosetting acrylic resin.
[0024] The beneficial effects of this utility model are:
[0025] (1) It can accurately identify and track dentures in real time, which helps intelligent management. It makes it easier for patients to understand the details of dentures, assists medical institutions in providing personalized services, and can also establish a maintenance reminder mechanism to improve the effect of denture use and protect patients' oral health.
[0026] (2) Stable information storage: The use of RFID chips to store information avoids the problems of easy wear and fading of traditional marking methods. It can stably preserve the detailed information of dentures for a long time, providing a reliable basis for denture production management, traceability and diagnosis during use.
[0027] (3) Convenient and quick information reading: The information in the denture label can be read quickly and accurately through the external reading and writing device, eliminating the need for manual searching and recording, which greatly improves work efficiency. For example, when medical staff examine a patient's dentures, they only need to bring the reading and writing device close to the denture to obtain relevant information about the denture, which provides convenience for diagnosis and treatment.
[0028] (4) Good biocompatibility: The encapsulation layer is made of biocompatible materials to ensure that the label will not cause harm to the human body when used in the oral cavity, thus improving the wearer's comfort and safety.
[0029] (5) Adapting to the needs of denture production and management: This denture label helps denture manufacturers to effectively manage and trace their products, and also facilitates the identification and management of dentures during transportation, storage and use, reducing confusion and loss. Attached Figure Description
[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0031] Figure 1 This is a schematic diagram of the structure of this utility model;
[0032] Figure 2 This is a schematic diagram of the structure of a UHF tag;
[0033] Figure 3 This is a structural diagram of the medium-sized material;
[0034] Figure 4 This is an image showing the InLay structure embedded in the front of the mandibular base.
[0035] In the picture:
[0036] 1. First injection molding section; 2. Second injection molding section; 3. RFID tag;
[0037] 31. Rubber strip; 32. InLay structure;
[0038] 321. In-Lay substrate, 322. Rectangular structure, 323. Zigzag dipole structure antenna, 324. UHF chip, 325. Feed point. Detailed Implementation
[0039] The present invention will be further described in detail below with reference to the accompanying drawings.
[0040] A denture tag based on RFID technology includes a first injection molding part 1. An RFID tag 3 is mounted on the first injection molding part 1. A second injection molding part 2 is filled on the outside of the RFID tag 3. The first injection molding part 1 and the second injection molding part 2 are made of thermosetting acrylic resin (PMMA). In the denture injection molding process, the gingiva 1 is first initially injection molded to form the first injection molding part 1, then the encapsulated strip-shaped RFID tag 3 is inserted, then filling material is injected to form the second injection molding part 2, and finally the denture is installed.
[0041] The RFID tag 3 comprises an outer shell consisting of an InLay structure 32 and a rubber strip 31. The rubber strip 31 is made of medical-grade silicone rubber. The InLay structure 32 is disposed inside the rubber strip 31.
[0042] The InLay structure 32 includes an InLay substrate 321. Considering the compatibility of the InLay substrate 321 with the injection molding material, the InLay substrate 321 is made of medical-grade PET. This material has good mechanical strength and chemical resistance, with a tensile strength of up to 100 MPa, and can remain stable in the complex environment of the oral cavity.
[0043] Using medical-grade PET (polyethylene terephthalate) as the RFID tag substrate embedded in dentures, this material has passed stringent biocompatibility certifications such as ISO 10993, is non-toxic and non-allergenic, and can safely maintain long-term contact with oral tissues. Combining flexibility and mechanical strength, it can be fabricated into ultra-thin films to perfectly fit the complex curves of denture bases, withstanding punctures, tension, and mechanical stress under chewing pressure and frequent removal and insertion. Its chemically stable properties resist erosion from saliva and cleaning agents, and it is resistant to high-temperature sterilization (high-pressure steam, dry heat, etc.), ensuring stable tag performance during daily denture use and sterilization processes. PET's low dielectric constant has minimal impact on UHF band signal transmission, ensuring sensitive read / write operation in the oral environment. Furthermore, it is highly compatible with commonly used denture materials (such as thermosetting acrylic resin PMMA) and encapsulation processes, facilitating the recording of denture information and enabling medical traceability; as a recyclable material, it meets environmental standards. Medical-grade PET substrate RFID tags provide a safe, reliable, and efficient solution for the digital management of dentures.
[0044] The zigzag dipole antenna 323 is disposed inside the InLay substrate 321, and the zigzag dipole antenna 323 employs a zigzag design in multiple places. The UHF chip 324 is disposed inside the InLay substrate 321 and is connected to the zigzag dipole antenna 323. The UHF chip 324 and the zigzag dipole antenna 323 are bonded together using anisotropic conductive adhesive. Relying on its high-precision bonding, small-size adaptability, non-thermal effect advantages, good flexibility, environmental friendliness, and stability, it can better ensure the electrical performance between the two.
[0045] The UHF chip 324's storage area is divided into TID, EPC, User, and Reserved areas. A professional UHF reader / writer is used to write relevant information about the dentures (such as model, production batch, and raw material information) into the designated EPC or User area of the RFID tag. During writing, the device power is set to 5W, and the writing time is controlled within 100ms to ensure accurate information writing.
[0046] The main body of the zigzag dipole antenna 323 is composed of black conductive lines. The zigzag dipole antenna 323 is 13mm long, 4.5mm wide, and has a bending interval of 2mm. The zigzag line design effectively increases the current path length, achieving a specific resonant frequency (860-960MHz) within a relatively small physical size (area of 58.5mm²).
[0047] Furthermore, the UHF chip 324 and the zigzag dipole antenna 323 are connected via a feed point 325, which is located inside the InLay substrate 321. The feed point 325 at the connection between the zigzag dipole antenna 323 and the UHF chip 324 is specially designed to achieve optimal impedance matching between the feed point 325 and the zigzag dipole antenna 323, thereby further improving the radiation efficiency and bandwidth of the zigzag dipole antenna 323.
[0048] Furthermore, the zigzag dipole antenna 323 employs a rectangular structure 322 at its end. The rectangular design 10 has a length of 12mm. This not only enhances radiation but also facilitates connection to external circuits. Utilizing an ultra-high frequency (UHF) chip 324, the rectangular structure 322 design further enhances the radiation effect and improves the tag's recognition performance.
[0049] Medical-grade silicone is used for injection molding. During the injection molding process, the PET substrate is first cleaned, and surface activity and adhesion are enhanced through plasma cleaning and a silane coupling agent coating. The mold is made of food-grade stainless steel, with a designed positioning structure and a reasonable runner gate to ensure the positioning of the InLay structure and silicone filling. Molding liquid silicone rubber is used for injection molding, and the mold temperature is precisely controlled at 80-120°C, the injection pressure at 5-15 MPa, and low-speed injection is used to avoid damaging the InLay structure. After injection molding, secondary vulcanization, cleaning, and sterilization are performed, and the adhesion strength, biocompatibility, and functional performance are tested. Attention to detail is emphasized throughout the process to ensure injection molding quality and medical applicability.
[0050] The gum line of the denture is made of thermosetting acrylic resin (PMMA), and the rubber strip 31 is made of the same medical-grade silicone rubber to ensure better integration with the gums. In the initial stage of gum molding, the first injection section 1, i.e., the superficial layer of the denture gum, is injected first, with a thickness of 3-4 mm. After the superficial gum layer is injected, an RFID tag 3 is added. A second injection molding and cold curing process is then performed to form the second injection section 2. The cold curing temperature is 5-10℃, and the cold curing time is 1.5 hours. Finally, according to the customer's customized requirements, dentures of different materials are installed on the gums.
[0051] When implanting RFID tags into full dentures, the optimal embedding location is the front of the mandibular base. The front of the mandibular base is close to the front of the mandible, making reading convenient and avoiding occlusal pressure from the posterior teeth. During implantation, the injection-molded RFID tag should be placed vertically within the denture base, maintaining a 1mm distance from the base's tissue surface and an equal distance of 0.5mm from the front and back of the base. During denture fabrication, ensure the tag is completely enclosed within the base with a smooth surface to avoid affecting oral comfort and function. Areas such as the occlusal surfaces and base edges are prone to pressure and friction, posing a risk of damaging the tag or irritating the mucosa, and should be avoided as embedding locations.
[0052] Its application scenarios include:
[0053] 1. Denture Manufacturing Process: During denture manufacturing, pre-made denture tags are implanted inside the dentures. Manufacturers can manage and update the information on the tags using reading and writing devices, enabling full traceability of the denture manufacturing process and ensuring product quality.
[0054] 2. Denture Sales and Distribution: When denture wearers require repair, replacement, or examination, healthcare professionals use UHF readers to read the information on the denture tags. After obtaining this information, healthcare professionals can determine the denture's wear condition based on the raw material information on the tag and identify any recall risks based on the production batch information, providing accurate data for diagnosis and treatment, and improving diagnostic accuracy by 50%.
[0055] 3. Denture Usage: In remote areas with limited medical resources, patients can use a portable simple reading and writing device to read the denture tag information and upload the data to a telemedicine platform. Doctors can then use this information for remote diagnosis and provide timely medical advice. In disaster relief and large-scale population censuses, reading denture tag information can quickly identify victims or census subjects, improving work efficiency.
[0056] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A denture tag based on RFID technology, characterized in that, include: First injection molding section (1); An RFID tag (3) is installed on the first injection molding section (1); The second injection molding part (2) is filled on the outside of the RFID tag (3); The RFID tag (3) includes: Rubber strip (31); The InLay structure (32) is located inside the rubber strip (31).
2. The denture tag based on RFID technology according to claim 1, characterized in that, The InLay structure (32) includes: InLay substrate (321); A zigzag dipole structure antenna (323) is disposed inside an InLay substrate (321); A UHF chip (324) is disposed inside an InLay substrate (321) and is connected to a zigzag dipole antenna (323).
3. A denture tag based on RFID technology according to claim 2, characterized in that, The UHF chip (324) and the zigzag dipole structure antenna (323) are connected by a feed point (325), which is located inside the InLay substrate (321).
4. A denture tag based on RFID technology according to claim 2, characterized in that, The end of the zigzag dipole antenna (323) adopts a rectangular structure (322).
5. A denture tag based on RFID technology according to claim 2, characterized in that, The zigzag dipole antenna (323) has a length of 13mm, a width of 4.5mm, and a bending interval of 2mm.
6. A denture tag based on RFID technology according to claim 4, characterized in that, The length of the rectangular design (10) is 12 mm.
7. A denture tag based on RFID technology according to claim 1, characterized in that, The rubber strip (31) is made of medical-grade silicone rubber.
8. A denture tag based on RFID technology according to claim 2, characterized in that, The InLay substrate (321) is made of medical-grade PET material.
9. A denture tag based on RFID technology according to claim 1, characterized in that, The first injection molding part (1) and the second injection molding part (2) are made of thermosetting acrylic resin.