Mouth gag capable of preventing mistaken swallowing
By designing an anti-swallowing mouth opener, using all-silicone material and an elastic connection structure, the problems of traditional mouth openers falling off and cross-infection are solved, achieving safe and convenient oral diagnosis and treatment operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN MEDICAL UNIVERSITY
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional mouth openers pose a risk of falling off during use, especially for children with autism spectrum disorder, leading to a high risk of accidental swallowing. Furthermore, existing temporary solutions pose a risk of cross-infection and are inconvenient to operate.
An anti-swallowing mouth opener was designed. It is made of all-silicone material and combines an elastic connecting rod, a connecting plate and a connecting strap to provide a reliable anti-swallowing mechanism. The stability of the device and convenient disinfection are ensured by the mechanical locking of the limiting ball and the opening.
It effectively prevents accidental swallowing of mouth openers, improves safety and comfort during use, simplifies the disinfection process, reduces the risk of cross-infection, and improves diagnostic and treatment efficiency.
Smart Images

Figure CN224140987U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mouth opener technology, specifically relating to a mouth opener designed to prevent accidental swallowing. Background Technology
[0002] Children with autism spectrum disorder (ASD) exhibit prominent oral hypersensitivity during dental treatment. These children often show extreme resistance to dental instruments, with nearly half of the cases showing strong avoidance reactions, such as sudden mouth closure, head turning, or defensive behaviors like limb struggle. This clinical characteristic makes the use of traditional mouth openers a serious safety hazard—the risk of the instrument falling off and being swallowed is 3-5 times higher than that of ordinary children when the child makes a sudden movement.
[0003] Currently, most traditional mouth openers used in clinical practice are made of rigid plastic or metal. While they provide necessary mechanical support, they have significant functional defects in practical applications. These devices generally lack reliable anti-dislodgement mechanisms, and when a child makes a sudden movement, the device is prone to displacement or even slipping into the esophagus. To address this risk, medical staff usually use a temporary solution: tying sterile cotton rope to the mouth opener as an emergency measure to prevent accidental swallowing. However, this method has significant drawbacks: firstly, the cotton rope cannot withstand standard sterilization procedures, making it difficult to reuse and posing a risk of cross-infection; secondly, the procedure of re-tying the rope before each use not only increases the workload of medical staff but also affects the efficiency of diagnosis and treatment in emergencies, failing to meet the needs of rapid clinical response.
[0004] Therefore, it is necessary to provide an anti-swallowing mouth opener to address the aforementioned technical issues.
[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0006] The purpose of this invention is to provide an anti-swallowing mouth opener, which provides a reliable anti-swallowing mechanism, and the device is made of all silicone material, making overall disinfection convenient.
[0007] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:
[0008] An anti-swallowing mouth opener includes a mouth opener body, an elastic connecting rod fixedly connected to the mouth opener body, a connecting plate detachably installed on the elastic connecting rod, an opening adapted to the elastic connecting rod on the connecting plate, and a connecting strap fixedly connected to the connecting plate.
[0009] In one or more embodiments of this utility model, the connecting strip is a silicone strip.
[0010] In one or more embodiments of this utility model, two elastic connecting rods are provided, both of which are arc-shaped, and both elastic connecting rods are inserted into the openings in the connecting plate.
[0011] In one or more embodiments of this utility model, limiting balls are fixedly connected to both elastic connecting rods, and the outer diameter of both limiting balls is larger than the opening.
[0012] In one or more embodiments of this utility model, a protective sleeve is provided on the connecting strip, and the protective sleeve is fitted over the outside of the connecting plate.
[0013] In one or more embodiments of this utility model, the protective sleeve includes a movable sleeve with a through hole, and the movable sleeve is slidably connected to the connecting strap through the through hole.
[0014] In one or more embodiments of this utility model, the protective sleeve includes a fixing sleeve, which is fixedly connected to the connecting strap.
[0015] In one or more embodiments of this utility model, the opening device body is configured as U-shaped, a circular hole is provided in the center of the opening device body, and anti-slip texture is provided on the opening device body.
[0016] In one or more embodiments of this utility model, a support bar is fixedly connected to the main body of the opening device, and four support bars are provided.
[0017] In one or more embodiments of this utility model, a U-shaped spring is embedded inside the body of the opening device, and the U-shaped spring is a 304 stainless steel spring.
[0018] Compared with existing technologies, the anti-swallowing mouth opener of this utility model provides a reliable anti-swallowing mechanism through the design of elastic connecting rod, connecting plate and connecting strap. During use, the connecting strap can effectively prevent the mouth opener from being swallowed. The size matching of the limiting ball and the opening provides a mechanical locking function while ensuring convenient disassembly. The all-silicone material makes overall sterilization convenient. The mouth opener body and the central round hole can improve the comfort of patients. Its surface anti-slip texture can improve the stability of use. The built-in U-shaped spring can ensure the overall structural strength and ensure its reliable performance. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a three-dimensional structural diagram of an anti-swallowing mouthpiece according to an embodiment of the present invention;
[0021] Figure 2 This is a perspective view of the main body of the anti-swallowing mouth opener in one embodiment of the present utility model;
[0022] Figure 3 This is a cross-sectional view of the main body of the anti-swallowing mouth opener in one embodiment of the present utility model;
[0023] Figure 4 This is a perspective view of the connecting plate in an anti-swallowing mouth opener according to an embodiment of the present invention;
[0024] Figure 5 This is a perspective view of the fixing sleeve in an anti-swallowing mouth opener according to an embodiment of the present invention.
[0025] Explanation of key figure labels:
[0026] 1. Opening device body; 2. Elastic connecting rod; 201. Limiting ball; 3. Connecting plate; 301. Opening; 4. Connecting belt; 5. Movable sleeve; 6. Fixed sleeve; 7. Support bar; 8. U-shaped spring. Detailed Implementation
[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0028] like Figures 1 to 5 As shown, an anti-swallowing mouth opener in one embodiment of the present invention includes a mouth opener body 1, which is U-shaped. A round hole is provided in the center of the mouth opener body 1. Anti-slip texture is provided on the mouth opener body 1. Support bars 7 are fixedly connected to the mouth opener body 1. Four support bars 7 are provided. U-shaped springs 8 are embedded and installed inside the mouth opener body 1. The U-shaped springs 8 are made of 304 stainless steel.
[0029] Specifically, the U-shaped structure of the mouth opener body 1, combined with the central circular hole, forms an ergonomic support frame. The four support bars 7 are radially distributed to enhance structural rigidity. The internally embedded 304 stainless steel U-shaped spring 8 provides continuous and stable support. The medical-grade silicone layer covering the outer layer ensures biocompatibility and avoids discomfort caused by direct metal contact. The anti-slip texture design on the surface of the mouth opener body 1 maintains excellent anti-slip performance even in humid environments.
[0030] Two elastic connecting rods 2 are fixedly connected to the main body 1 of the mouth opener. Both elastic connecting rods 2 are arc-shaped and have a gradually changing diameter design, with the diameter gradually transitioning from the proximal end to the distal end. This design ensures structural strength while providing flexible buffering characteristics. A connecting plate 3 is detachably installed on the elastic connecting rod 2. The connecting plate 3 has an opening 301 that matches the elastic connecting rod 2. Both elastic connecting rods 2 are inserted into the opening 301 on the connecting plate 3. Limiting balls 201 are fixedly connected to both elastic connecting rods 2. The outer diameter of both limiting balls 201 is larger than that of the opening 301. The size difference between the limiting balls 201 and the opening 301 forms a reliable mechanical stop. During disassembly, only a certain lateral force needs to be applied to achieve rapid separation. The U-shaped structure design of the connecting plate 3 makes the force distribution more uniform.
[0031] A connecting strap 4 is fixedly connected to the connecting plate 3. A protective sleeve is provided on the connecting strap 4, which is fitted over the outside of the connecting plate 3. The connecting strap 4 can be made of 3mm thick medical-grade silicone.
[0032] The protective cover includes a movable sleeve 5, which has a through hole. The movable sleeve 5 is slidably connected to the connecting strap 4 through the through hole. The movable sleeve 5 adopts a sliding design and can be flipped outwards to facilitate cleaning and disinfection of its interior.
[0033] The protective sleeve can also be a fixing sleeve 6, which is fixedly connected to the connecting strap 4. The fixed installation method can prevent it from shifting during use and make it convenient to use.
[0034] In use, the mouth opener body 1 is supported in the patient's oral cavity by its U-shaped structure. The built-in 304 stainless steel U-shaped spring 8 provides elastic support to keep the mouth opener in a stable open state. Two arc-shaped elastic connecting rods 2 extend upward from the mouth opener body 1 and pass through the opening 301 of the connecting plate 3. They are detachably fixed by the mechanical limiting action of the limiting ball 201. The connecting strap 4 is led out through the connecting plate and can be placed directly or fixed to the outside. It is a protective measure to prevent accidental swallowing. The anti-slip texture on the surface of the mouth opener body 1 can prevent slippage during operation, thereby achieving safe and stable oral opening operation and effectively preventing accidental swallowing. The device adopts an all-silicone design, which can be easily sterilized.
[0035] 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.
[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A bite-alarm opening device, characterized in that The device includes an opening body, on which an elastic connecting rod is fixedly connected. A connecting plate is detachably installed on the elastic connecting rod. The connecting plate has an opening adapted to the elastic connecting rod, and a connecting strap is fixedly connected to the connecting plate.
2. An anti-aspiration laryngeal mask in accordance with claim 1 wherein, The connecting strip is a silicone strip.
3. An anti-aspiration laryngeal mask in accordance with claim 2 wherein, The elastic connecting rods are configured as two, both of which are arc-shaped, and both elastic connecting rods are inserted into the openings in the connecting plate.
4. An anti-aspiration laryngeal mask in accordance with claim 3 wherein, Both of the elastic connecting rods are fixedly connected to limit balls, and the outer diameter of both limit balls is larger than the opening.
5. The anti-aspiration laryngeal mask in claim 1, wherein, A protective sleeve is provided on the connecting strip, and the protective sleeve is fitted over the outside of the connecting plate.
6. An anti-aspiration laryngeal mask in accordance with claim 5 wherein, The protective sleeve includes a movable sleeve with a through hole, and the movable sleeve is slidably connected to the connecting strap through the through hole.
7. The anti-aspiration laryngeal mask in claim 5, wherein, The protective sleeve includes a fixing sleeve, which is fixedly connected to the connecting strap.
8. The anti-aspiration laryngeal mask in claim 1, wherein, The opening device body is U-shaped, with a round hole in the center and anti-slip texture on the body.
9. An anti-aspiration laryngeal mask in accordance with claim 8 wherein, The opening device body is fixedly connected with support bars, and there are four support bars.
10. An anti-aspiration laryngeal mask in accordance with claim 9 wherein, The opening device body is internally fitted with a U-shaped spring, which is made of 304 stainless steel.