Magnetic resonance examination special mouth guard for temporomandibular joint

Abstract

This utility model relates to the field of medical device technology, and in particular to a special occlusal device for MRI examination of the temporomandibular joint. It includes a triangular block, with an occlusal block slidably mounted on the upper and lower surfaces of the triangular block. A knob is rotatably mounted on the side of the triangular block. A slot is formed on the upper surface of the triangular block, penetrating the block. A sliding component for fixing the occlusal block is disposed inside the slot. Auxiliary components for guiding the sliding of the occlusal block are disposed on the upper and lower sides of the slot. This utility model, by incorporating a sliding component within the slot, enables smooth and precise movement of the occlusal block. Patients can more easily control the position of the occlusal block, thereby adjusting the mouth opening range. The auxiliary components ensure stability of the occlusal block during movement, preventing displacement and ensuring a more comfortable and efficient MRI examination of the temporomandibular joint, better meeting the examination needs of different patients.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a special bite device for magnetic resonance imaging examination of the temporomandibular joint. Background Technology

[0002] Mandibular fracture is a common surgical condition among oral and maxillofacial trauma diseases. When a mandibular fracture occurs, it can severely affect swallowing, breathing, chewing, facial appearance, and vision, causing many inconveniences in the patient's daily life.

[0003] For example, the maxillofacial rehabilitation mouth-opening device disclosed in Chinese Patent No. CN221845368U works on the principle of "including a bite block and a handle. The front of the bite block is a triangular structure, and the handle is connected to the right side of the bite block. Both the upper and lower sides of the bite block are provided with bite teeth, forming a bite gap between the bite teeth. The beneficial effects of this utility model are: the triangular structure and the bite gaps on the upper and lower sides allow for different occlusal gradients to adjust the patient's mouth opening range, thus passively opening the mandible and increasing the angle; it has good stability, as the patient bites into the bite gap and it is not easy to slip; the bite block is made of soft materials such as silicone, avoiding damage to the oral cavity; and it is provided with a handle for easy access." However, when performing MRI examinations of the temporomandibular joint, patients still need to actively exert force to open their mouths to adjust the opening range. This not only causes inconvenience to patients and increases the difficulty and complexity of the examination, but also, because it requires the patient's own effort, it may be difficult to achieve uniform and stable opening, which may negatively affect the examination results. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a special bite device for magnetic resonance examination of the temporomandibular joint. By setting a sliding component in the slot, the bite block can move smoothly and accurately, making it easy for patients to adjust its position to adjust the mouth opening range.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a special occlusal device for magnetic resonance imaging examination of the temporomandibular joint, including a triangular block, an occlusal block slidably mounted on the upper and lower surfaces of the triangular block, a knob rotatably mounted on the side of the triangular block, a slot being formed on the upper surface of the triangular block, the slot penetrating the triangular block; a sliding component for fixing the occlusal block is provided inside the slot; auxiliary components for guiding the sliding of the occlusal block are provided on the upper and lower sides inside the slot.

[0006] As a preferred technical solution of this utility model, the sliding component includes a rotating shaft and a sleeve. The rotating shaft is rotatably installed inside the slot. One end of the rotating shaft is rotatably fixed to one side inside the slot. The other end of the slot passes through a triangular block and is fixedly connected to a knob. The sleeve is movably sleeved around the rotating shaft. A locking block is fixedly installed inside the sleeve. A sliding groove is opened around the rotating shaft. Several locking slots are opened on one side of the sliding groove on the rotating shaft. Telescopic connecting rods are fixedly installed on the upper and lower sides of the sleeve. The output end of the telescopic connecting rod is fixedly connected to the bottom surface of the engagement block.

[0007] As a preferred technical solution of this utility model, the auxiliary component includes a guide shaft and an L-shaped connecting block. The slot has movable grooves on the upper and lower sides inside. The movable grooves are parallel to the surface of the triangular block. The guide shaft is fixedly installed inside the movable groove. The L-shaped connecting blocks are fixedly arranged on both sides below the biting block. One end of the L-shaped connecting block is movably arranged inside the movable groove. The guide shaft passes through the L-shaped connecting block.

[0008] In a preferred embodiment of this invention, the width of the card block is less than the width of the slide groove and the card slot, and the length of the card block is less than the length of the card slot.

[0009] As a preferred technical solution of this utility model, the upper and lower sides of the triangular block are provided with limiting grooves, and a limiting block is movably arranged inside the limiting groove. The limiting block is fixedly connected to the interlocking block.

[0010] Compared with the prior art, the beneficial effects of this utility model are: by setting a sliding component in the slot, the occlusal block can move smoothly and accurately, and the patient can more easily control the position of the occlusal block and thus adjust the mouth opening range. The auxiliary component can ensure that the occlusal block is stable during the movement and will not deviate, ensuring that the process of MRI examination of the temporomandibular joint is more comfortable and efficient, and can better meet the examination needs of different patients. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a top view of the present invention;

[0013] Figure 3 This is a three-dimensional structural connection diagram of the sleeve, the locking block, and the telescopic connecting rod in this utility model;

[0014] Figure 4 This is a three-dimensional structural diagram of the rotating shaft in this utility model;

[0015] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0016] Among them: 10, triangular block; 11, interlocking block; 12, knob; 13, slot; 20, rotating shaft; 21, sleeve; 22, locking block; 23, sliding groove; 24, locking groove; 25, moving groove; 26, guide shaft; 27, limiting groove; 28, limiting block; 29, telescopic connecting rod; 210, L-shaped connecting block. Detailed Implementation

[0017] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0018] Please refer to Figure 1-5 As shown, this utility model provides a special occlusal device for magnetic resonance imaging examination of the temporomandibular joint, including a triangular block 10, an occlusal block 11 slidably mounted on the upper and lower surfaces of the triangular block 10, a knob 12 rotatably mounted on the side of the triangular block 10, a slot 13 is formed on the upper surface of the triangular block 10, the slot 13 penetrates the triangular block 10; a sliding component for fixing the occlusal block 11 is provided inside the slot 13; auxiliary components for guiding the sliding of the occlusal block 11 are provided on the upper and lower sides inside the slot 13.

[0019] In this case, by setting a sliding component in the slot 13, the occlusal block 11 can move smoothly and precisely, allowing the patient to more easily control the position of the occlusal block 11 and thus adjust the mouth opening range. The auxiliary component ensures that the occlusal block 11 remains stable during movement and does not shift, ensuring a more comfortable and efficient process during MRI examination of the temporomandibular joint, and better meeting the examination needs of different patients.

[0020] The sliding assembly includes a rotating shaft 20 and a sleeve 21. The rotating shaft 20 is rotatably installed inside the slot 13. One end of the rotating shaft 20 is rotatably fixed inside the slot 13. The other end of the slot 13 passes through the triangular block 10 and is fixedly connected to the knob 12. The sleeve 21 is movably sleeved around the rotating shaft 20. A locking block 22 is fixedly installed inside the sleeve 21. A sliding groove 23 is opened around the rotating shaft 20. Several locking slots 24 are opened on one side of the sliding groove 23 on the rotating shaft 20. Telescopic connecting rods 29 are fixedly installed on the upper and lower sides of the sleeve 21. The output end of the telescopic connecting rod 29 is fixedly connected to the bottom surface of the engagement block 11.

[0021] Rotating the knob 12 drives the rotating shaft 20 to rotate. With the cooperation of the slide groove 23 and the locking block 22, the sleeve 21 can move smoothly along the rotating shaft 20. Then, the telescopic connecting rod 29 drives the occlusal block 11 to move, thereby adjusting the mouth opening range. The locking groove 24 is designed so that after the occlusal block 11 moves to the appropriate position, the locking block 22 can be locked into the locking groove 24 for fixation, preventing the occlusal block 11 from moving accidentally during use. This ensures the stability and safety of the examination and provides the patient with a reliable and controllable examination environment.

[0022] The auxiliary components include a guide shaft 26 and an L-shaped connecting block 210. The slot 13 has movable grooves 25 on the upper and lower sides. The movable grooves 25 are parallel to the surface of the triangular block 10. The guide shaft 26 is fixedly installed inside the movable grooves 25. The L-shaped connecting blocks 210 are fixedly arranged on both sides below the interlocking block 11. One end of the L-shaped connecting block 210 is movably arranged inside the movable groove 25. The guide shaft 26 passes through the L-shaped connecting block 210.

[0023] The guide shaft 26 and the L-shaped connecting block 210 in the auxiliary component work together to provide guidance for the sliding of the occlusal block 11. During the movement of the occlusal block 11, the L-shaped connecting block 210 slides along the guide shaft 26 in the moving groove 25, ensuring that the occlusal block 11 always moves smoothly in the predetermined direction without deviation or shaking. This not only improves the accuracy of the movement of the occlusal block 11 and makes the adjustment of the mouth opening range more precise, but also reduces the discomfort caused to the patient's oral cavity by the unstable movement of the occlusal block 11, thus improving the patient's user experience.

[0024] The width of the card block 22 is less than the width of the slide 23 and the card slot 24, and the length of the card block 22 is less than the length of the card slot 24.

[0025] By ensuring that the width of the locking block 22 is less than the width of the slide groove 23 and the locking slot 24, and the length of the locking block 22 is less than the length of the locking slot 24, the locking block 22 can slide smoothly within the slide groove 23. At the same time, it can accurately lock into the locking slot 24 when fixation is required. This ensures the flexibility and reliability of the sliding component during adjustment and fixation. It avoids the problem of the locking block 22 being too large, which would cause difficulty in sliding, or the problem of the locking block 22 being too small, which would prevent it from being securely fixed. This ensures that the entire occlusal device can operate stably and efficiently, providing a strong guarantee for the patient's examination.

[0026] The upper and lower sides of the triangular block 10 are provided with limiting grooves 27, and the limiting grooves 27 are provided with limiting blocks 28, which are fixedly connected to the interlocking block 11.

[0027] The movement range of the occlusal block 11 is limited by the setting of the limiting groove 27 and the limiting block 28. During the sliding process of the occlusal block 11, the limiting block 28 moves within the limiting groove 27. When the limiting block 28 reaches the end of the limiting groove 27, the occlusal block 11 can no longer move, thereby preventing damage to the patient's oral cavity due to excessive movement of the occlusal block 11. At the same time, it also avoids the situation where the device is damaged due to excessive movement range, thereby enhancing the safety and reliability of the occlusal device and allowing patients to undergo examinations with greater peace of mind.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A special bite guard for magnetic resonance examination of the temporomandibular joint comprising a triangular block (10), characterized in that: The upper and lower surfaces of the triangular block (10) are slidably fitted with interlocking blocks (11), and the side of the triangular block (10) is rotatably fitted with a knob (12). The upper surface of the triangular block (10) is provided with a slot (13), and the slot (13) penetrates the triangular block (10). The slot (13) is provided with a sliding component for fixing the bite block (11); The slot (13) has auxiliary components on its upper and lower sides for guiding the sliding of the bite block (11).

2. The magnetic resonance examination TMJ specific bite guard of claim 1, wherein: The sliding assembly includes a rotating shaft (20) and a sleeve (21). The rotating shaft (20) is rotatably installed inside the slot (13). One end of the rotating shaft (20) is rotatably fixed inside the slot (13). The other end of the slot (13) passes through a triangular block (10) and is fixedly connected to a knob (12). The sleeve (21) is movably sleeved around the rotating shaft (20). A locking block (22) is fixedly installed inside the sleeve (21). A sliding groove (23) is opened around the rotating shaft (20). Several locking slots (24) are opened on one side of the sliding groove (23) on the rotating shaft (20). Telescopic connecting rods (29) are fixedly installed on the upper and lower sides of the sleeve (21). The output end of the telescopic connecting rod (29) is fixedly connected to the bottom surface of the biting block (11).

3. The special bite guard for magnetic resonance examination of temporomandibular joint according to claim 1, characterized in that: The auxiliary components include a guide shaft (26) and an L-shaped connecting block (210). The slot (13) has a moving groove (25) on both the upper and lower sides. The moving groove (25) is parallel to the surface of the triangular block (10). The guide shaft (26) is fixedly installed inside the moving groove (25). The L-shaped connecting block (210) is fixedly arranged on both sides below the interlocking block (11). One end of the L-shaped connecting block (210) is movably arranged inside the moving groove (25). The guide shaft (26) passes through the L-shaped connecting block (210).

4. The magnetic resonance examination TMJ specific bite guard of claim 2, wherein: The width of the card block (22) is less than the width of the slide (23) and the card slot (24), and the length of the card block (22) is less than the length of the card slot (24).

5. The magnetic resonance examination TMJ specific bite guard of claim 1, wherein: The triangular block (10) has limit grooves (27) on its upper and lower sides. A limit block (28) is movably arranged inside the limit groove (27). The limit block (28) is fixedly connected to the interlocking block (11).

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