Anti-loosening telescope denture

By setting clamping and connecting components on the tooth body and the denture, and utilizing the cooperation of structures such as clamping seats and bidirectional screws, the telescopic crown denture can be adjusted and fixed, solving the loosening problem and improving stability and service life.

WO2026066986A1PCT designated stage Publication Date: 2026-04-02SHANGHAI CHENXIN MEDICAL DEVICES CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-09-08
Publication Date
2026-04-02

AI Technical Summary

Technical Problem

Existing telescopic crown dentures are prone to loosening during use, affecting their lifespan and user experience.

Method used

The denture uses a combination of connecting components on the tooth body and clamping components on the denture to interlock. The adjustable fixation of the denture is achieved through the cooperation of clamping seat, bidirectional screw, threaded sleeve and connecting plate. Manual adjustment and tightening are achieved by matching L-shaped connecting seat and U-shaped seat.

Benefits of technology

It effectively avoids the problem of denture loosening and improves the stability and service life of telescopic crown dentures.

✦ Generated by Eureka AI based on patent content.

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Abstract

Provided is an anti-loosening telescope denture, comprising a tooth body (1), a connecting assembly (2) mounted on the tooth body (1), a fastener assembly (4) in snap-fit with the connecting assembly (2), and a denture (3) mounted on the clamping assembly (4). The connecting assembly (2) comprises a fastening base (2-1) fixedly connected to the tooth body (1). The outer wall on one side of the fastening base (2-1) is provided with a through groove (2-4). A mounting cavity (5) is provided inside the clamping base (2-1), and the inner wall on one side of the mounting cavity (5) is provided with an opening. The inner wall of the opening is slidably connected to an L-shaped connecting base (2-5). The inner walls on two sides of the mounting cavity (5) are rotatably connected to one reverse-flighted screw (6), and two symmetrically arranged insert nuts (7) are in threaded connection with the outer wall of the reverse-flighted screw (6). By arranging the connecting assembly (2) on the tooth body (1) and arranging the fastener assembly (4) on the denture (3), the cooperation between the fastener assembly (4) and the connecting assembly (2) facilitates the securing of the denture (3), and the adjustable L-shaped connecting base (2-5) in the connecting assembly (2) facilitates the tightening of the fastening base (2-1), thereby effectively avoiding the problem of loosening of the denture (3).
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Description

Anti-loose sleeve crown denture TECHNICAL FIELD

[0001] The present application relates to the field of dentures, in particular to an anti-loose sleeve crown denture. BACKGROUND

[0002] The sleeve crown denture is a fixed-mobile combined prosthesis. The sleeve crown includes an inner crown with high adhesion and an outer crown. During installation, the inner crown is cemented on the abutment, and the outer crown is placed in the denture. The friction generated between the inner and outer crowns retains the denture. However, the general sleeve crown is prone to loosening during use, which affects the experience of consumers.

[0003] The existing sleeve crown denture is mainly connected by a hook-like buckle during installation. This connection method will generate a lot of wear during long-term use, which will cause the denture to loosen easily. Once the denture loosens, it will directly cause the denture to wear out, thereby directly affecting the normal use of the denture.

[0004] Practical new type content

[0005] In order to solve the problem that the existing sleeve crown denture is prone to loosening, the present application provides an anti-loose sleeve crown denture.

[0006] The anti-loose sleeve crown denture provided by the present application adopts the following technical scheme:

[0007] An anti-loose sleeve crown denture, comprising a tooth body, a connecting assembly installed on the tooth body, a clamping assembly clamped on the connecting assembly, and a denture installed on the clamping assembly, the connecting assembly comprises a clamping seat fixedly connected to the tooth body, a through slot is formed in the outer wall of one side of the clamping seat, an installation cavity is formed in the inner part of the clamping seat, an opening is formed in the inner wall of one side of the installation cavity, and an L-shaped connecting seat is slidably connected to the inner wall of the opening.

[0008] By adopting the above technical scheme, the connecting assembly on the tooth body and the clamping assembly on the denture are clamped and engaged with each other, so that the denture is conveniently installed, and the installation cavity in the clamping seat is conveniently slidably installed.

[0009] The two opposite inner walls of the installation cavity are rotatably connected to the same bidirectional screw rod, and the outer wall of the bidirectional screw rod is screw-connected to two symmetrically arranged threaded sleeves.

[0010] By adopting the above technical scheme, the installation cavity is conveniently rotatably installed on the bidirectional screw rod, and the bidirectional screw rod is conveniently directly driven to move the two threaded sleeves towards or away from each other when rotating.

[0011] The outer wall of each of the two threaded sleeves is rotationally connected with a connecting plate, and one end of the two connecting plates is rotationally connected with a sliding seat, which is slidingly connected to the inner wall of the mounting cavity.

[0012] By adopting the above technical scheme, the threaded sleeve is moved when the bidirectional screw rotates, the connecting plate is directly moved when the threaded sleeve moves, and the sliding seat is directly moved when the connecting plate moves.

[0013] The sliding seat is fixedly connected to the L-shaped connecting seat, a circular groove is formed in the top outer wall of the clamping seat, a rotating part is rotationally connected to the bottom inner wall of the circular groove, a transmission shaft of the rotating part is fixedly connected to the bidirectional screw, a sealing cover is clamped to the inner wall of the circular groove, and a clamping groove is formed in the side inner wall of the through groove.

[0014] By adopting the above technical scheme, the L-shaped connecting seat is directly moved when the sliding seat slides in the mounting cavity, the circular groove of the clamping seat is convenient for hiding and installing the rotating part, the rotating part is directly rotated, the sealing cover is convenient for closing the circular groove, and the rotating part is protected.

[0015] The clamping assembly comprises a connecting seat fixedly connected to the false tooth, and a rectangular seat fixedly connected to the outer wall of one side of the connecting seat and slidingly connected to the inner wall of the clamping groove.

[0016] By adopting the above technical scheme, the rectangular seat of the connecting seat is inserted into the clamping groove, so that the connecting seat is clamped to the clamping seat.

[0017] The size of the clamping groove is greater than that of the rectangular seat.

[0018] By adopting the above technical scheme, the width of the clamping groove is greater than that of the rectangular seat, so that the rectangular seat is transversely slid in the clamping groove.

[0019] The outer wall of one side of the connecting seat is fixedly connected with two symmetrical U-shaped seats, and the size of the U-shaped seat matches that of the L-shaped connecting seat.

[0020] By adopting the above technical scheme, the U-shaped seat of the connecting seat is connected to the L-shaped connecting seat of the clamping seat, and the U-shaped seat is directly pulled when the L-shaped connecting seat moves.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. The connecting assembly is arranged on the tooth body, the clamping assembly is arranged on the false tooth, the clamping assembly and the connecting assembly are matched, the false tooth is fixed, the L-shaped connecting seat in the connecting assembly is adjusted to tighten the clamping seat, and the problem of loosening of the false tooth is effectively avoided.

[0023] 2. The application facilitates direct pulling of the L-shaped connecting seat by setting the cooperation between the bidirectional screw, the threaded sleeve and the connecting plate in the clamping seat, and the setting of the rotatable part in the clamping seat facilitates direct driving of the bidirectional screw, thereby facilitating manual adjustment of the L-shaped connecting seat. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a schematic diagram of the overall structure of the anti-loosening sleeve crown denture according to an embodiment of the application;

[0025] Fig. 2 is a schematic diagram of the structure of the connecting assembly according to an embodiment of the application;

[0026] Fig. 3 is a schematic diagram of the structure of the clamping assembly according to an embodiment of the application;

[0027] Fig. 4 is a schematic diagram of the three-dimensional structure of the clamping assembly according to an embodiment of the application;

[0028] Fig. 5 is a schematic diagram of the cross-sectional structure of the connecting assembly according to an embodiment of the application;

[0029] Reference signs: 1, tooth body; 2, connecting assembly; 3, denture; 4, clamping assembly; 5, mounting cavity; 6, bidirectional screw; 7, threaded sleeve; 8, connecting plate; 9, sliding seat; 2-1, clamping seat; 2-2, rotatable part; 2-3, sealing cover; 2-4, through slot; 2-5, L-shaped connecting seat; 2-6, clamping groove; 4-1, U-shaped seat; 4-2, rectangular seat; 4-3, connecting seat. DETAILED DESCRIPTION

[0030] The application will be further described in detail below in combination with Figs. 1-5.

[0031] The application discloses an anti-loosening sleeve crown denture.

[0032] Referring to Figs. 1-3, the anti-loosening sleeve crown denture comprises a tooth body 1, a connecting assembly 2 mounted on the tooth body 1, a clamping assembly 4 clamped on the connecting assembly 2 and a denture 3 mounted on the clamping assembly 4, the connecting assembly 2 on the tooth body 1 and the clamping assembly 4 on the denture 3 are clamped and engaged with each other, thereby facilitating installation of the denture 3;

[0033] Referring to Figures 4-5, the connecting assembly 2 fixed on the tooth body 1 comprises a clamping seat 2-1 fixedly connected to the tooth body 1, and a through slot 2-4 is formed in one side outer wall of the clamping seat 2-1, an installation cavity 5 is formed in the inside of the clamping seat 2-1, and an opening is formed in one side inner wall of the installation cavity 5, an L-shaped connecting seat 2-5 is slidably connected to the inner wall of the opening, a same bidirectional screw 6 is rotatably connected to the two side inner walls of the installation cavity 5, two symmetrical threaded sleeves 7 are screwed to the outer wall of the bidirectional screw 6, the outer wall of each threaded sleeve 7 is rotatably connected to a connecting plate 8, one end of each connecting plate 8 is rotatably connected to a sliding seat 9, the sliding seat 9 is slidably connected to the inner wall of the installation cavity 5, the sliding seat 9 is fixedly connected to the L-shaped connecting seat 2-5, a circular groove is formed in the top outer wall of the clamping seat 2-1, a rotating part 2-2 is rotatably connected to the bottom inner wall of the circular groove, the transmission shaft of the rotating part 2-2 is fixedly connected to the bidirectional screw 6, a sealing cover 2-3 is clamped to the inner wall of the circular groove, and a clamping groove 2-6 is formed in one side inner wall of the through slot 2-4;

[0034] In use, the rotating part 2-2 is conveniently hidden and installed through the circular groove on the clamping seat 2-1, the rotating part 2-2 is conveniently directly driven to rotate by the bidirectional screw 6, the sealing cover 2-3 is conveniently arranged to close the circular groove, thereby conveniently protecting the rotating part 2-2, the bidirectional screw 6 is conveniently directly driven to move the two threaded sleeves 7 towards or away from each other, when the two threaded sleeves 7 move away from each other, the sliding seat 9 is directly pulled to move towards the bidirectional screw 6 through the connecting plate 8, the L-shaped connecting seat 2-5 is directly pulled to move when the sliding seat 9 moves, and when the two threaded sleeves 7 move towards each other, the L-shaped connecting seat 2-5 is directly pushed out by the sliding seat 9 through the connecting plate 8.

[0035] Referring to Figure 3, the clamping assembly 4 installed on the false tooth 3 comprises a connecting seat 4-3 fixedly connected to the false tooth 3, and a rectangular seat 4-2 is fixedly connected to one side outer wall of the connecting seat 4-3, the rectangular seat 4-2 is slidably connected to the inner wall of the clamping groove 2-6, the rectangular seat 4-2 on the connecting seat 4-3 is inserted into the clamping groove 2-6, thereby conveniently clamping the connecting seat 4-3 to the clamping seat 2-1, the size of the clamping groove 2-6 is larger than that of the rectangular seat 4-2, the width of the clamping groove 2-6 is larger than that of the rectangular seat 4-2, thereby conveniently enabling the rectangular seat 4-2 to slide transversely in the clamping groove 2-6, two symmetrical U-shaped seats 4-1 are fixedly connected to one side outer wall of the connecting seat 4-3, the size of the U-shaped seat 4-1 matches that of the L-shaped connecting seat 2-5, the U-shaped seat 4-1 on the connecting seat 4-3 is conveniently connected to the L-shaped connecting seat 2-5 on the clamping seat 2-1, and the U-shaped seat 4-1 is directly pulled to move when the L-shaped connecting seat 2-5 moves.

[0036] The implementation principle of the anti-loosening sleeve crown denture provided in the embodiments of the present application is as follows: when the denture 4 needs to be installed, the clamping seat 4-3 on the denture 3 is vertically inserted into the clamping seat 2-1, the rectangular seat 4-2 is inserted into the clamping groove 2-6, and the U-shaped seat 4-1 is inserted into the L-shaped connecting seat 2-5, and then the rotating part 2-2 is rotated, the rotating part 2-2 directly drives the bidirectional screw rod 6 to rotate when rotating, the bidirectional screw rod 6 directly drives the two threaded sleeves 7 to move towards or away from each other when rotating, the two threaded sleeves 7 directly drive the connecting plate 8 to pull the sliding seat 9 to move towards the bidirectional screw rod 6 when moving away from each other, the sliding seat 9 directly pulls the L-shaped connecting seat 2-5 to move when moving, the L-shaped connecting seat 2-5 directly pulls the clamping seat 2-1 through the U-shaped seat 4-1 when moving, and then the denture 3 is conveniently pulled and fixed.

[0037] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A loosening-preventing sleeve crown denture, comprising a tooth body (1), a connecting assembly (2) installed on the tooth body (1), a clamping assembly (4) clamped on the connecting assembly (2), and a denture (3) installed on the clamping assembly (4), characterized in that: The connecting assembly (2) comprises a clamping seat (2-1) fixedly connected to the tooth body (1), and a through groove (2-4) is arranged on one side outer wall of the clamping seat (2-1), an installation cavity (5) is arranged in the clamping seat (2-1), and an opening is arranged on one side inner wall of the installation cavity (5), and an L-shaped connecting seat (2-5) is slidably connected to the inner wall of the opening.

2. The anti -screwdown sleeve crown denture according to claim 1, characterized in that: Both sides of the installation cavity (5) are rotatably connected with the same bidirectional screw rod (6), and the outer wall of the bidirectional screw rod (6) is screwed with two symmetrically arranged threaded sleeves (7).

3. A screw-retained sleeve crown denture according to claim 2, characterized in that: The outer wall of the two threaded sleeves (7) is rotatably connected with a connecting plate (8), and one end of the two connecting plates (8) is rotatably connected with a sliding seat (9) which is slidably connected to the inner wall of the installation cavity (5).

4. The anti -screw out type sleeve crown denture according to claim 3, characterized in that: The sliding seat (9) is fixedly connected to the L-shaped connecting seat (2-5), a circular groove is arranged on the top outer wall of the clamping seat (2-1), and a rotating part (2-2) is rotatably connected to the bottom inner wall of the circular groove, the transmission shaft of the rotating part (2-2) is fixedly connected to the bidirectional screw rod (6), the inner wall of the circular groove is clamped with a sealing cover (2-3), and one side inner wall of the through groove (2-4) is provided with a clamping groove (2-6).

5. A screw-retained sleeve crown denture according to claim 4, characterized in that: The clamping assembly (4) comprises a connecting seat (4-3) fixedly connected to the false tooth (3), and one side outer wall of the connecting seat (4-3) is fixedly connected with a rectangular seat (4-2), and the rectangular seat (4-2) is slidably connected to the inner wall of the clamping groove (2-6).

6. A screw-retained sleeve crown denture according to claim 5, characterized in that: The size of the clamping groove (2-6) is larger than that of the rectangular seat (4-2).

7. A screw-retained sleeve crown denture according to claim 6, characterized in that: One side outer wall of the connecting seat (4-3) is fixedly connected with two symmetrically arranged U-shaped seats (4-1), and the size of the U-shaped seat (4-1) matches that of the L-shaped connecting seat (2-5).

Citation Information

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