An in-house expansion examination device for oral and maxillofacial region

Abstract

This invention discloses an internal expansion examination device for the oral and maxillofacial region, comprising a symmetrically arranged lower tooth support, upper tooth support, labial support, first crossbar, and second crossbar. A spring and a threaded rod are symmetrically arranged at the bottom of the first crossbar, with one end of the threaded rod connected to the second crossbar. One end of the lower tooth support is connected to a first connecting rod, and one end of the first connecting rod passes through the spring and is fixed to the second crossbar. A first sliding member is provided on the threaded rod, and a second sliding member is provided at the end of the spring away from the first crossbar. The symmetrically arranged first and second sliding members are connected by a third crossbar. A second connecting rod is provided on the third crossbar, passing through the first crossbar and connecting to the upper tooth support. A nut is also provided on the threaded rod. A third connecting rod is provided at the top of the first crossbar, with one end connected to a transmission device. The transmission device is connected to a rack, and one end of the rack is connected to the labial support. This invention, through structural optimization and material upgrades, comprehensively improves flexibility, comfort, and durability.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and more specifically, relates to an internal expansion examination device for the oral and maxillofacial region. Background Technology

[0002] The rise of the oral healthcare industry in recent years has increased our awareness of oral health. Our mouths are constantly ingesting food, and we can't always clean them thoroughly. Each cleaning inevitably introduces new bacteria, leading to conditions like mouth ulcers, cavities, gingivitis, and periodontitis over time. This can result in problems such as tooth loss, loose teeth, tooth decay, and alveolar bone atrophy. To avoid these issues, regular dental checkups and care have become an increasingly popular choice.

[0003] Oral examinations require dilation and observation to enable effective treatment of patients, thus necessitating the development of an internal oral and maxillofacial dilation device. Traditional internal oral and maxillofacial dilation devices have poor oral dilation capabilities and cause inconvenience during treatment and examination due to structural obstruction. Furthermore, they offer low patient comfort during dilation, thus reducing the flexibility of the device. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an internal expansion examination device for the oral and maxillofacial region, comprising a symmetrically arranged lower tooth support, upper tooth support, labial support, first crossbar, and second crossbar; a spring and a threaded rod are symmetrically arranged at the bottom of the first crossbar, one end of the threaded rod being connected to the second crossbar; one end of the lower tooth support is connected to a first connecting rod, and one end of the first connecting rod passes through the spring and is fixed to the second crossbar; a first sliding member is provided on the threaded rod, and a second sliding member is provided at the end of the spring away from the first crossbar, the symmetrically arranged first and second sliding members being connected by a third crossbar; a second connecting rod is provided on the third crossbar, the second connecting rod passing through the first crossbeam and connecting to the upper tooth support; a nut is also provided on the threaded rod; a third connecting rod is provided at the top of the first crossbar, one end of the third connecting rod being connected to a transmission device, the transmission device being connected to a rack, and one end of the rack being connected to the labial support.

[0005] Furthermore, the transmission device is equipped with a self-locking device.

[0006] Furthermore, the rack includes a connecting section and a moving section. The moving section has toothed protrusions, and the ends of the toothed protrusions are provided with baffles. The connecting section is fixedly connected to both ends of the moving section, and one of the connecting sections is provided with a lip support.

[0007] Furthermore, the first crossbar, the second crossbar, the third crossbar, the first connecting rod, the second connecting rod, the third connecting rod, and the threaded rod are all made of carbon fiber material.

[0008] Furthermore, the upper and lower dental supports are provided with grooves.

[0009] Furthermore, the lip brace, upper dental brace, and lower dental brace are made of high-strength resin encapsulated in medical-grade silicone; the nut is made of medical-grade stainless steel.

[0010] In summary, the present invention has the following advantages over the prior art: The oral and maxillofacial built-in expansion examination device provided by this invention addresses the problems of poor expansion effect, inconvenient operation, and low patient comfort of traditional devices. Through structural optimization and material upgrades, it achieves comprehensive improvement in flexibility, comfort, durability, and safety. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 A schematic diagram of the overall structure of an in-house expansion examination device for the oral and maxillofacial region. Figure 2 This is a magnified view of a portion of point A; Figure 3 A bottom view of an in-stomach and maxillofacial expander examination device; Figure 4 This is a magnified view of a section at point B.

[0012] The above figures include the following reference numerals: 1. Lower toothed support; 2. Upper toothed support; 3. Lip support; 4. First crossbar; 5. Second crossbar; 6. Third crossbar; 7. Threaded rod; 8. First connecting rod; 9. Second connecting rod; 10. Third connecting rod; 11. Spring; 12. Nut; 13. Groove; 14. Transmission device; 15. Rack; 151. Moving section; 152. Connecting section; 153. Baffle; 16. First sliding member; 17. Second sliding member. Detailed Implementation

[0013] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0014] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular form may also include the plural form unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0015] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0016] See Figures 1 to 4 As shown, this invention provides an internal expansion examination device for the oral and maxillofacial region, including a symmetrically arranged lower tooth support 1, upper tooth support 2, labial support 3, first crossbar 4, and second crossbar 5. The bottom of the first crossbar 4 is symmetrically equipped with a spring 11 and a threaded rod 7, the other end of which is connected to the second crossbar 5, thus fixing the first crossbar 4 and the second crossbar 5. One end of the lower tooth support 1 is connected to a first connecting rod 8, and the other end of the first connecting rod 8 passes through the spring 11 and is fixed to the second crossbar 5. The threaded rod 7 is provided with a first sliding member 16, and the end of the spring 11 away from the first crossbar 4 is provided with a second sliding member 17. The symmetrically arranged first sliding member 16 and second sliding member 17 are connected by a third crossbar 6, so that the first sliding member 16 and the second sliding member 17 are on the same horizontal plane. A second connecting rod 9 is fixedly connected to the third crossbar 6, and the second connecting rod 9 passes through the first crossbar and is connected to the upper tooth support 2. Furthermore, the threaded rod 7 is also provided with a nut 12.

[0017] In use, medical staff pull the third crossbar 6, causing the upper dental support 2 to move downwards and approach the lower dental support 1. Then, the patient opens their mouth, the dilator is inserted, and the third crossbar 6 is slowly released. The upper dental support 2, under the upward force of the spring 11, presses against the patient's upper teeth, and the lower dental support 1 presses against the patient's lower teeth. Finally, the nut is tightened to secure the positions of the upper dental support 2 and the lower dental support 1. Simultaneously, when medical staff need to adjust the height or angle of the patient's teeth on one side, they can adjust the height of the nut 12 on one side, changing the angle of the third crossbar 6, thereby altering the height of that side of the dental support.

[0018] In addition, the device also includes a symmetrically arranged third link 10 and lip support 3. One end of the third link 10 is fixed to the top of the first crossbar 4, and the other end is connected to the transmission device 14. The transmission device 14 is connected to the rack 15, and one end of the rack 15 is connected to the lip support 3. When in use, twisting the transmission device 14 can make the rack 15 move left and right through the gear rack 15 transmission, thereby driving the lip support 3 to move, so as to achieve the purpose of expanding the patient's lips.

[0019] As a preferred option, the transmission device 14 is equipped with a self-locking device to prevent the rack 15 from derailing due to excessive movement distance during left and right movements.

[0020] As a preferred embodiment, the rack 15 includes a connecting section 152 and a moving section 151. The moving section 151 has toothed protrusions, and the ends of the toothed protrusions are provided with baffles 153 to prevent the rack 15 from derailing during movement. The connecting sections 152 are fixedly connected to both ends of the moving section 151, and one of the connecting sections 152 is provided with a lip support 3.

[0021] As a preferred embodiment, to reduce the overall weight of the device and improve its service life, the first crossbar 4, the second crossbar 5, the third crossbar 6, the first connecting rod 8, the second connecting rod 9, the third connecting rod 10, and the threaded rod 7 are all made of carbon fiber material. The advantages of carbon fiber material include: (1) High strength: The tensile strength of carbon fiber is several times that of steel, which can provide excellent support.

[0022] (2) Lightweight: Carbon fiber has a relatively low density, only 1 / 5 that of steel, which significantly reduces the structural weight.

[0023] (3) Corrosion resistance: Carbon fiber exhibits good corrosion resistance in humid, acidic or alkaline environments.

[0024] (4) Wear resistance: Carbon fiber has high surface hardness and strong wear resistance.

[0025] (5) Good processability: Carbon fiber materials are easy to process and are suitable for a variety of applications.

[0026] As a preferred embodiment, the upper dental support 2 and the lower dental support 1 are provided with grooves 13 to facilitate dental support for the patient.

[0027] As a preferred option, the lip support 3, upper tooth support 2, and lower tooth support 1 are preferably made of medical-grade silicone coated with high-strength resin. The outer layer of silicone can reduce the feeling of foreign body when it adheres to the oral mucosa, while the inner layer of resin provides support strength. The nut 12 is made of medical-grade stainless steel to avoid corrosion due to contact with oral saliva.

[0028] Precautions: I. Patient suitability test Before use, the patient's basic oral condition must be confirmed: If the patient has severe oral mucosal ulcers, loose teeth or oral tumors, the safety of the device placement must be assessed. If the ulcer area is located at the tooth support, sterile medical gauze can be attached to the surface of the tooth support to avoid direct pressure on the ulcer surface. For patients with severe tooth loosening, the elastic force of spring 11 should be reduced to prevent tooth loss due to tooth support pressure.

[0029] Pediatric patients need to use a customized pediatric device (the size of the dental support is reduced to 2 / 3 of the adult size, and the elastic coefficient of spring 11 is reduced to 2N / mm), and a family member needs to be present to assist in fixing the head during operation to prevent the device from shifting due to the child crying.

[0030] II. Disinfection and Hygiene Requirements Before and after each use, the device must be thoroughly disinfected: detachable parts (lip support 3, upper tooth support 2, lower tooth support 1) should be removed and soaked in medical alcohol (75%) for 30 minutes, or sterilized in a medical autoclave (121℃, 0.1MPa) for 15 minutes; non-detachable parts (crossbar, connecting rod, threaded rod 7) should be wiped 3 times with gauze soaked in medical alcohol, paying special attention to cleaning the gaps between the toothed protrusions of the toothed rack 15 (to avoid residual saliva or food residue).

[0031] Medical staff must wear sterile gloves before operation. Before the device is placed in the patient's mouth, the surfaces of the dental support and labial support 3 must be wiped with sterile saline to avoid disinfectant residue irritating the oral mucosa.

[0032] Structural advantages and usage effects: (1) Enhanced flexibility: Through the combination structure of "spring 11 + threaded rod 7 + sliding part", the upper and lower tooth supports 1 can be quickly adjusted and locked. At the same time, the single-sided nut 12 adjustment function adapts to the differences in the patient's tooth structure, solving the problem of "fixed opening cannot be finely adjusted" in traditional devices. The lip support 3 adjustment method driven by gear rack 15 can accurately control the lip expansion range and avoid excessive expansion that causes patient discomfort.

[0033] (2) Comfort optimization: The surface of the dental support and lip support 3 wrapped in medical silicone is soft and conforms to the oral cavity contour, reducing the coldness and foreign body feeling of traditional metal devices; the elastic force of the spring 11 can be adjusted according to the patient's dental condition by replacing the spring 11 with a different elastic coefficient, so as to avoid excessive pressure that could damage the gums or teeth.

[0034] (3) Durability and safety: The crossbars and connecting rods made of carbon fiber weigh only 1 / 5 of those made of traditional metal (e.g., the first crossbar 4 of the same size weighs about 20g in the carbon fiber version and about 100g in the stainless steel version), which reduces the overall weight of the device and avoids hand fatigue of medical staff due to long-term use; the 316L stainless steel nut 12 and the medical-grade silicone parts meet the requirements of "Biological evaluation of medical devices - Part 1: Evaluation and testing in the risk management process" (GB / T16886.1-2022), are non-biologically toxic, and can be used safely for a long time.

[0035] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An internal expansion examination device for the oral and maxillofacial region, characterized in that, The device includes a symmetrically arranged lower tooth support (1), upper tooth support (2), lip support (3), first crossbar (4), and second crossbar (5); the bottom of the first crossbar (4) is symmetrically provided with a spring (11) and a threaded rod (7), one end of the threaded rod (7) is connected to the second crossbar (5); one end of the lower tooth support (1) is connected to a first connecting rod (8), one end of the first connecting rod (8) passes through the spring (11) and is fixed to the second crossbar (5); the threaded rod (7) is provided with a first sliding member (16), and the end of the spring (11) away from the first crossbar (4) is provided with a sliding member (16). The second sliding member (17) is symmetrically arranged with the first sliding member (16) and the second sliding member (17) connected by a third crossbar (6); the third crossbar (6) is provided with a second connecting rod (9), which passes through the first crossbeam and is connected to the upper toothed support (2); the threaded rod (7) is also provided with a nut (12); the top of the first crossbar (4) is provided with a third connecting rod (10), one end of the third connecting rod (10) is connected to the transmission device (14), the transmission device (14) is connected to the rack (15), and one end of the rack (15) is connected to the lip support (3).

2. The oral and maxillofacial built-in expansion examination device according to claim 1, characterized in that, The transmission device (14) is equipped with a self-locking device.

3. The oral and maxillofacial built-in expansion examination device according to claim 1, characterized in that, The rack (15) includes a connecting section (152) and a moving section (151). The moving section (151) is provided with toothed protrusions, and the end of the toothed protrusions is provided with a baffle (153). The connecting section (152) is fixedly connected to both ends of the moving section (151), and one of the connecting sections (152) is provided with a lip support (3).

4. The oral and maxillofacial built-in expansion examination device according to claim 1, characterized in that, The first crossbar (4), the second crossbar (5), the third crossbar (6), the first connecting rod (8), the second connecting rod (9), the third connecting rod (10), and the threaded rod (7) are all made of carbon fiber material.

5. The oral and maxillofacial built-in expansion examination device according to claim 1, characterized in that, The upper tooth support (2) and the lower tooth support (1) are provided with grooves (13).

6. The oral and maxillofacial built-in expansion examination device according to claim 1, characterized in that, The lip support (3), the upper tooth support (2) and the lower tooth support (1) are made of high-strength resin coated with medical-grade silicone; the nut (12) is made of medical-grade stainless steel.

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