Child mouth opener for comfort

The comfortable child mouth opener with a three-layer composite structure solves the problems of traditional mouth openers being made of hard materials and lacking a gradual mechanical transition. It achieves a gradual dispersion of biting force, ensuring operational stability and comfort, avoiding mucosal pressure injury and biting injury, and improving medical efficiency.

CN224387446UActive Publication Date: 2026-06-23HANGZHOU YUHANG DISTRICT NO 5 PEOPLES HOSPITAL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU YUHANG DISTRICT NO 5 PEOPLES HOSPITAL
Filing Date
2025-04-18
Publication Date
2026-06-23

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Abstract

The utility model relates to medical instrument technical field, the utility model comfort child mouth gag, including mouth gag body, support wing and bionic retaining mechanism, mouth gag body includes contact layer, transition layer and support layer, support layer, transition layer and contact layer are sequentially arranged from inside to outside, the upper and lower two side end surfaces of contact layer are respectively provided with occlusion groove, is equipped with antiskid line on occlusion groove, support wing includes lower support wing and upper support wing, bionic retaining mechanism includes the front retaining clamp of setting on mouth gag body, the utility model has the advantages that: the three -layer composite structure contact layer - transition layer - support layer of the present application forms the hardness gradient of gradual change, and the contact layer medical silica gel cooperates the gradual hard transition layer, realizes the occlusal force from soft to hard progressive transmission, and the local pressure of traditional hard mouth gag is reduced, effectively avoids mucous membrane pressure injury, and the bionic honeycomb support layer keeps the support strength at the same time, and the weight is lightened.
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Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a comfortable child mouth opener. Background Technology

[0002] Traditional mouth openers for pediatric oral surgery are mostly made of rigid plastic or metal, which presents significant comfort drawbacks in clinical application. Especially considering the unique anatomy of children's mouths, existing mouth openers lack a progressive mechanical transition structure, failing to balance operational stability with mucosal protection. While there have been attempts to improve this with silicone materials in recent years, these still fall short in terms of support strength and deformation control, increasing the risk of doctors biting their hands. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to propose a comfortable pediatric mouth opener that integrates flexible support, biomimetic fixation, and stable support, thereby improving the comfort experience of children while ensuring the stability of diagnostic and treatment procedures.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a comfortable child mouth opener, comprising: a mouth opener body, the mouth opener body including a contact layer, a transition layer and a support layer, the support layer, the transition layer and the contact layer being arranged sequentially from the inside to the outside, and the upper and lower end faces of the contact layer respectively having a biting groove, the biting groove having an anti-slip texture; a support wing, the support wing including a lower support wing and an upper support wing, both made of flexible material, the lower support wing and the upper support wing being respectively arranged on both sides of the biting groove; and a bionic retention mechanism, the bionic retention mechanism including a front retention clip disposed on the mouth opener body.

[0005] Preferably, the contact layer is made of medical-grade silicone to form a flexible support, and the surface of the contact layer is provided with an antibacterial coating.

[0006] Preferably, the hardness of the transition layer increases from the side closest to the contact layer to the side closest to the support layer.

[0007] Preferably, the support layer is configured as a biomimetic honeycomb structure.

[0008] Preferably, the edges of the upper support wing and the lower support wing are designed to be gradually thinner.

[0009] Preferably, the front retaining clip is U-shaped and one side is rotatably mounted on the opening body.

[0010] With the above structure, this utility model has the following advantages:

[0011] This application features a three-layer composite structure consisting of a contact layer, a transition layer, and a support layer, forming a gradual hardness gradient. The medical-grade silicone contact layer, combined with the gradually hardening transition layer, enables a progressive transmission of biting force from soft to hard. Compared to traditional rigid mouth openers, this reduces local pressure and effectively prevents mucosal pressure injury. The biomimetic honeycomb support layer maintains support strength while reducing weight and possesses anisotropic deformation characteristics, adapting to the physiological movement trajectory of the temporomandibular joint in children. This ensures support strength, enhances deformation control, prevents biting injuries, and guarantees the operational safety of medical personnel.

[0012] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is the right view of this utility model.

[0016] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of AA.

[0017] As shown in the figure: 1. Opening device body; 2. Contact layer; 3. Front retaining clip; 4. Upper support wing; 5. Lower support wing; 6. Engaging groove; 7. Transition layer; 8. Support layer. Detailed Implementation

[0018] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] Combination Figures 1-3 As shown, the comfort-oriented child mouth opener includes a mouth opener body 1, a support wing, and a bionic retention mechanism.

[0021] The mouth opener body 1 includes a contact layer 2, a transition layer 7, and a support layer 8. The support layer 8, the transition layer 7, and the contact layer 2 are arranged sequentially from the inside to the outside. The upper and lower end faces of the contact layer 2 are respectively provided with occlusal grooves 6, and the occlusal grooves 6 are provided with anti-slip textures. The support wings include a lower support wing 5 and an upper support wing 4, both of which are made of flexible materials. The lower support wing 5 and the upper support wing 4 are respectively arranged on both sides of the occlusal grooves 6. The bionic retention mechanism includes a front retention clip 3 set on the mouth opener body 1. The width of the mouth opener body 1 on the side closer to the front retention clip 3 is wider than the side farther away from the front retention clip 3. The narrower side is placed in the oral cavity on the side closer to the root of the tongue to avoid causing pharyngeal reflex or nausea in children.

[0022] In one embodiment of this invention, the contact layer 2 is made of medical-grade silicone to form a flexible support, and the surface of the contact layer 2 is provided with an antibacterial coating. Specifically, the contact layer 2 is made of medical-grade addition-cure silicone with a Shore hardness of 25A, and its thickness is controlled within the range of 1.2-1.5mm. Its surface is coated with a nano-silver antibacterial coating using plasma spraying technology, with a silver ion concentration of 0.8μg / cm³. 2 It can inhibit the growth of common oral pathogens such as Staphylococcus aureus and Candida albicans (antibacterial inhibition rate > 99.5%). The inner side of the contact layer 2 is seamlessly joined to the transition layer 7 through a hot-pressing molding process. The occlusal groove 6 is designed as a wavy curved surface that matches the deciduous dentition. The anti-slip texture adopts a cross-diamond pattern with a depth of 0.3mm to ensure occlusal stability while avoiding soft tissue contusion.

[0023] In one embodiment of this invention, the transition layer 7 increases in hardness from the side closest to the contact layer 2 to the side closest to the support layer 8. Specifically, the transition layer 7 is made of a polyurethane material with a gradient hardness, transitioning in three layers from the contact layer 2 side (Shore hardness 30A) to the support layer 8 side (Shore hardness 70A), with each layer having a thickness of 0.5mm and elastic moduli of 2MPa→15MPa→50MPa respectively. This gradient structure can expand the area for dispersing occlusal force, reduce local pressure, and effectively prevent stress concentration in the temporomandibular joint of children.

[0024] In one embodiment of this utility model, the support layer 8 is configured as a biomimetic honeycomb structure. Specifically, as shown... Figure 3 As shown, the support layer 8 is a biomimetic honeycomb structure made of PA12 material by SLS 3D printing. The hexagonal unit cell has a side length of 1.2 mm, a wall thickness of 0.2 mm, and a porosity of 65%. This structure can resist interlocking deformation (deformation < 5%) and provide flexible buffering along the opening direction, making it lighter than a solid structure.

[0025] In one embodiment of this utility model, the edges of the upper support wing 4 and the lower support wing 5 are designed to taper. Specifically, as shown... Figure 2 As shown, the upper support wing 4 and the lower support wing 5 are integrally injection molded from liquid silicone. The edge thickness gradually decreases from 0.8mm at the connection of the interlocking groove 6 to 0.2mm at the end, and the edge curvature radius is ≥2mm. A stress diffusion band with a width of 3mm is set at the root of the support wing, which can bend adaptively with the opening angle and has an elastic recovery rate of >98%, avoiding plastic deformation caused by repeated use.

[0026] In one embodiment of this utility model, the front retaining clip 3 is U-shaped, with one side rotatably mounted on the opening body 1. Specifically, as shown... Figure 1 As shown, the U-shaped arm of the front retaining clamp 3 is 8mm wide and the diameter of the rotating shaft is 2mm. It is made of wear-resistant rubber or silicone material and the rotation angle range is 0°-360°.

[0027] In summary, this mouth opener utilizes a three-layer composite structure—contact layer 2 (antibacterial interface), transition layer 7 (gradient buffer), and honeycomb support layer 8 (rigid protection)—to achieve scientific dispersion of biting force. The synergistic effect of the gradually thinning support wings and the dynamic retention mechanism ensures stable retention of the device. The combination of anti-slip textures and the honeycomb structure attenuates accidental biting impact, significantly improving safety for both doctors and patients. The mouth opener can be custom-made into cartoon animal shapes to enhance its aesthetics, increase patient acceptance and cooperation, and ultimately improve medical efficiency.

[0028] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout the text are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A comfortable mouth opener for children, characterized in that, include: The mouth opener body includes a contact layer, a transition layer and a support layer. The support layer, the transition layer and the contact layer are arranged sequentially from the inside to the outside. The upper and lower end faces of the contact layer are respectively provided with engagement grooves, and the engagement grooves are provided with anti-slip textures. The support wing includes a lower support wing and an upper support wing, both made of flexible material, and the lower support wing and the upper support wing are respectively disposed on both sides of the engagement groove; A biomimetic retention mechanism, the biomimetic retention mechanism including a front retention clamp disposed on the opening body.

2. The comfortable child mouth opener according to claim 1, characterized in that: The contact layer is made of medical-grade silicone to form a flexible support, and the surface of the contact layer is provided with an antibacterial coating.

3. The comfortable child mouth opener according to claim 2, characterized in that: The hardness of the transition layer increases from the side closest to the contact layer to the side closest to the support layer.

4. The comfortable child mouth opener according to claim 3, characterized in that: The support layer is configured as a biomimetic honeycomb structure.

5. The comfortable child mouth opener according to claim 4, characterized in that: The edges of the upper support wing and the lower support wing are designed to be tapered.

6. The comfortable child mouth opener according to claim 5, characterized in that: The front retaining clamp is U-shaped, with one side rotatably mounted on the opening body.