Composite abutment snap-on conversion cap
By designing a composite abutment snap-on conversion cap, and utilizing the conversion cap assembly and limiting mechanism, the problem of inconvenient cleaning of fixed abutments is solved, enabling convenient disassembly and cleaning of crowns and improving the convenience of maintenance for patients.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU TRAUSIM MEDICAL INSTR
- Filing Date
- 2025-06-18
- Publication Date
- 2026-05-29
AI Technical Summary
In current dental implant technology, composite abutments are fixed, which makes daily cleaning and maintenance inconvenient for patients.
A composite abutment snap-on conversion cap is designed to enable quick assembly and disassembly of dental crowns through the conversion cap assembly and limiting mechanism. By utilizing the connection between the conversion cap body and the conical platform, combined with the cooperation of the limiting spring and gear rack, the locking and unlocking of the dental crowns can be achieved.
It enables convenient installation and removal of dental crowns, making it easier for users to clean them and improving the convenience of daily maintenance for patients.
Smart Images

Figure CN224292030U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dental implant technology, specifically a composite abutment snap-on conversion cap. Background Technology
[0002] Dental implants involve implanting a replacement for natural tooth roots into the jawbone to obtain a restoration similar to tooth retention and support. It is a method of tooth restoration that uses a structure implanted within the bone tissue to support and fix the superstructure. The implant is placed into the alveolar bone and eventually fuses with the surrounding bone tissue to form a stable osseointegration. An abutment is then installed on the implant, and finally, the superstructure is installed on the abutment to restore missing or damaged teeth.
[0003] In the prior art, patent announcement number CN222285655U discloses a dental implant assembly, including an abutment and an implant. The implant has a threaded groove, and the abutment is installed in the implant. The abutment includes a spindle-shaped head, a middle stud, and a lower stud. The upper middle part of the spindle-shaped head is provided with a crown. The middle stud is screwed onto the upper part of the threaded groove, and the lower stud is screwed into the threaded groove through an elastic bushing. The elastic bushing is hollow and has an internal thread on its inner surface that mates with the lower stud. The outer surface of the elastic bushing has an external thread that mates with the threaded groove. The length of the lower stud is 3 to 6 times the length of the middle stud.
[0004] The composite abutment used in the proposed solution is a type that is fixed by screws. This type of repair is a fixed repair, meaning that once installed, it cannot be converted to a semi-fixed repair. This design causes inconvenience for patients in daily cleaning and maintenance. Therefore, a snap-on conversion cap for the composite abutment is proposed. Summary of the Invention
[0005] The purpose of this invention is to provide a composite base snap-on conversion cap to solve the problems in the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite abutment snap-on conversion cap, comprising an implant, wherein a threaded hole is provided on the implant, a fixing screw is threadedly connected to the threaded hole, and an mounting base is fixedly installed on the upper end of the fixing screw, characterized in that: a conversion cap assembly is installed on the mounting base, the conversion cap assembly includes a conical platform fixedly installed on the mounting base, a conversion cap body is connected to the conical platform, an installation hole is provided on the conversion cap body, a protruding ring is fixedly installed at the upper edge of the conversion cap body, a snap-on attachment is connected to the protruding ring, and a dental crown is fixedly installed on the upper surface of the snap-on attachment, and a limiting mechanism is installed in the installation hole.
[0007] Preferably, the conversion cap assembly further includes a threaded groove formed on the conical platform and a mating screw fixedly installed in the conversion cap body, wherein the mating screw is threadedly connected in the threaded groove, and a sealing ring is installed at the connection between the snap fastener and the convex ring.
[0008] Preferably, the bottom of the conversion cap body is provided with a conversion composite interface, and the conversion cap body is connected to the conical platform through the conversion composite interface.
[0009] Preferably, the conversion cap body is fixed on the conical platform by the engagement of the connecting screw and the threaded groove, the snap fastener is restricted to the upper end of the conversion cap body by the convex ring, and the limiting mechanism is installed in the conversion cap body through the mounting hole.
[0010] Preferably, the limiting mechanism includes a mechanism housing fixedly installed at both ends of the mounting hole, a limiting spring installed inside the mechanism housing, a spring seat movably installed inside the mechanism housing, a limiting rod fixedly installed on one side surface of the spring seat, a movable rod fixedly installed on the other side surface of the spring seat, a rack fixedly installed at the end of the movable rod, and a gear rotatably installed between the racks, with the racks meshing with the gears.
[0011] Preferably, a rotating shaft is rotatably mounted at the center of the mounting hole, and the gear is rotatably mounted at the center of the mounting hole via the rotating shaft.
[0012] Preferably, both the limiting rod and the movable rod are movably installed inside the mechanism housing via spring seats, one end of the limiting spring is connected to the spring seat, and the other end of the limiting spring is connected to the end of the mechanism housing.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] In this application, the conversion cap body is connected to the conical platform, at which point the mating screw and the threaded groove are precisely aligned. Subsequently, a torque wrench is used to tighten the conversion cap body, ensuring its stable positioning on the mounting base. Next, the crown is installed on the conversion cap body through the synergistic action of the convex ring and the snap-on attachment. Furthermore, by pulling the crown, the snap-on attachment undergoes plastic deformation, making it easy for the user to remove the crown for cleaning.
[0015] In this application, during the assembly of the crown and the adapter cap, a limiting spring drives a limiting rod to move forward, causing the limiting rod to insert into the hole of the snap-on attachment, thereby limiting the displacement of the crown on the snap-on attachment and achieving a locked state for the snap-on attachment. By applying pressure to the limiting rod, the user utilizes the interaction of the rack and pinion to cause the limiting rods at both ends of the mounting hole to retract and disengage from the snap-on attachment, thus releasing the lock on the snap-on attachment. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a partial structural cross-sectional view of the present invention;
[0018] Figure 3 This is a schematic diagram of the conversion cap assembly of this utility model;
[0019] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model.
[0020] The markings in the diagram are: 1. Implant; 2. Mounting base; 3. Threaded hole; 4. Fixing screw; 5. Converter cap assembly; 501. Conical platform; 502. Threaded groove; 503. Converter cap body; 504. Snap fastener attachment; 505. Mounting hole; 506. Raised ring; 507. Sealing ring; 508. Connecting screw; 6. Limiting mechanism; 601. Mechanism housing; 602. Limiting rod; 603. Spring seat; 604. Limiting spring; 605. Movable rod; 606. Rack; 607. Gear. Detailed Implementation
[0021] 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.
[0022] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a composite abutment snap-on conversion cap, including an implant 1, a threaded hole 3 on the implant 1, a fixing screw 4 threadedly connected to the threaded hole 3, an mounting base 2 fixedly installed on the upper end of the fixing screw 4, a conversion cap assembly 5 installed on the mounting base 2, and a limiting mechanism 6 installed in the mounting hole 505. Through the cooperation of the conversion cap assembly 5 and the limiting mechanism 6, the crown can be quickly disassembled and installed, making it convenient for users to remove the crown for cleaning.
[0023] like Figure 2 and Figure 3As shown, the conversion cap assembly 5 includes a conical platform 501 fixedly mounted on the mounting base 2. A conversion cap body 503 is connected to the conical platform 501. The conversion cap body 503 has a mounting hole 505. A protruding ring 506 is fixedly mounted at the upper edge of the conversion cap body 503. A snap fastener attachment 504 is connected to the protruding ring 506, and a tooth crown is fixedly mounted on the upper surface of the snap fastener attachment 504. The conversion cap assembly 5 also includes a threaded groove 502 opened on the conical platform 501 and a mating screw 508 fixedly mounted in the conversion cap body 503. The mating screw 508 is threadedly connected in the threaded groove 502. A sealing ring 507 is installed at the connection between the snap fastener attachment 504 and the protruding ring 506. A conversion composite interface is opened at the bottom of the conversion cap body 503, and the conversion cap body 503 is connected to the conical platform 501 through the conversion composite interface.
[0024] Specifically, after the adapter cap body 503 is successfully connected to the conical platform 501, the mating screw 508 will be precisely aligned with the threaded groove 502. Once the mating screw 508 is aligned with the threaded groove 502, a torque wrench can be used to tighten the adapter cap body 503, ensuring that the adapter cap body 503 is firmly fixed on the mounting base 2. Next, the crown can be installed on the adapter cap body 503 through the cooperation of the protruding ring 506 and the snap attachment 504. When the crown needs to be cleaned, simply pull the crown gently, and the snap attachment 504 will undergo plastic deformation, easily detaching from the adapter cap body 503, allowing the user to easily remove the crown for cleaning.
[0025] like Figure 2 and Figure 4 As shown, the limiting mechanism 6 includes a mechanism housing 601 fixedly installed at both ends of the mounting hole 505. A limiting spring 604 is installed inside the mechanism housing 601. A spring seat 603 is movably installed inside the mechanism housing 601. A limiting rod 602 is fixedly installed on one side surface of the spring seat 603. A movable rod 605 is fixedly installed on the other side surface of the spring seat 603. A rack 606 is fixedly installed at the end of the movable rod 605. A gear 607 is rotatably installed between the racks 606, and the racks 606 and the gear 607 mesh together. A rotating shaft is rotatably installed at the middle position of the mounting hole 505. The gear 607 is rotatably installed at the middle position of the mounting hole 505 through the rotating shaft.
[0026] Specifically, after the crown is installed, the limiting spring 604 automatically activates, pushing the limiting rod 602 forward. This action allows the limiting rod 602 to smoothly engage with the hole in the snap fastener attachment 504. In this way, the limiting rod 602 effectively restricts the movement of the snap fastener attachment 504, thus achieving a locked state for the snap fastener attachment 504. Furthermore, the user can release the lock by pressing the limiting rod 602 when needed. When the user applies pressure, the limiting rod 602, under the coordinated action of the rack 606 and gear 607, retracts and disengages from the snap fastener attachment 504 at both ends of the mounting hole 505, thus successfully releasing the locked state of the snap fastener attachment 504.
[0027] Working principle: First, implant 1 is inserted into the dental arch. Then, the conversion cap body 503 can be connected to the conical platform 501. When the conversion cap body 503 is connected to the conical platform 501, the mating screw 508 will be aligned with the threaded groove 502. After the mating screw 508 is aligned with the threaded groove 502, the conversion cap body 503 can be tightened with a torque wrench to firmly fix the conversion cap body 503 on the mounting base 2. Then, the crown can be installed on the conversion cap body 503 through the cooperation of the protruding ring 506 and the snap attachment 504. Pulling the crown can cause the snap attachment 504 to undergo plastic deformation, allowing it to detach from the conversion cap body 503, making it convenient for the user to remove the crown for cleaning. When the crown is installed on the adapter cap body 503, the limiting spring 604 will push the limiting rod 602 forward, so that the limiting rod 602 is embedded in the hole of the snap fastener attachment 504, restricting the movement of the crown on the snap fastener attachment 504 and locking the snap fastener attachment 504. The user can press the limiting rod 602, and under the action of the rack 606 and the gear 607, the limiting rods 602 located at both ends of the mounting hole 505 will retract and disengage from the snap fastener attachment 504, releasing the lock of the snap fastener attachment 504.
[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A composite abutment snap-on conversion cap, comprising an implant (1), wherein the implant (1) has a threaded hole (3), a fixing screw (4) is threadedly connected to the threaded hole (3), and an mounting base (2) is fixedly installed on the upper end of the fixing screw (4), characterized in that: A conversion cap assembly (5) is installed on the mounting base (2). The conversion cap assembly (5) includes a conical platform (501) fixedly installed on the mounting base (2). A conversion cap body (503) is connected to the conical platform (501). A mounting hole (505) is provided on the conversion cap body (503). A protruding ring (506) is fixedly installed at the upper edge of the conversion cap body (503). A snap fastener attachment (504) is connected to the protruding ring (506). A dental crown is fixedly installed on the upper surface of the snap fastener attachment (504). A limiting mechanism (6) is installed in the mounting hole (505).
2. The composite base snap-on conversion cap according to claim 1, characterized in that: The conversion cap assembly (5) also includes a threaded groove (502) opened on the conical platform (501) and a mating screw (508) fixedly installed in the conversion cap body (503), and the mating screw (508) is threaded in the threaded groove (502). A sealing ring (507) is installed at the connection between the snap fastener attachment (504) and the convex ring (506).
3. The composite base snap-on conversion cap according to claim 2, characterized in that: The conversion cap body (503) has a conversion composite interface at its bottom, and the conversion cap body (503) is connected to the conical platform (501) through the conversion composite interface.
4. The composite base snap-on conversion cap according to claim 3, characterized in that: The conversion cap body (503) is fixed on the conical platform (501) by the engagement of the connecting screw (508) and the threaded groove (502). The snap fastener attachment (504) is restricted to the upper end of the conversion cap body (503) by the convex ring (506). The limiting mechanism (6) is installed in the conversion cap body (503) through the mounting hole (505).
5. A composite base snap-on conversion cap according to claim 4, characterized in that: The limiting mechanism (6) includes a mechanism housing (601) fixedly installed at both ends of the mounting hole (505). A limiting spring (604) is installed inside the mechanism housing (601). A spring seat (603) is movably installed inside the mechanism housing (601). A limiting rod (602) is fixedly installed on one side surface of the spring seat (603). A movable rod (605) is fixedly installed on the other side surface of the spring seat (603). A rack (606) is fixedly installed at the end of the movable rod (605). A gear (607) is rotatably installed between the racks (606), and the racks (606) and gears (607) mesh together.
6. A composite base snap-on conversion cap according to claim 5, characterized in that: A rotating shaft is rotatably mounted in the middle of the mounting hole (505), and the gear (607) is rotatably mounted in the middle of the mounting hole (505) via the rotating shaft.
7. A composite base snap-on conversion cap according to claim 6, characterized in that, The limiting rod (602) and the movable rod (605) are both movably installed in the mechanism housing (601) through the spring seat (603). One end of the limiting spring (604) is connected to the spring seat (603), and the other end of the limiting spring (604) is connected to the end of the mechanism housing (601).