Appliance for preventing patient from biting tongue and being injured by self
By designing a combination of anti-biting tongue depressor and tooth prying bracket, the problem of difficulty in quick fixation and ensuring airflow in existing technologies is solved, achieving effective anti-biting tongue and airflow functions when the jaw is clenched.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINGMEN PEOPLES HOSPITAL (CENT HOSPITAL AFFILIATED TO JINGCHU INST OF TECH)
- Filing Date
- 2025-01-09
- Publication Date
- 2026-04-21
AI Technical Summary
Existing oral protectors are difficult to fix quickly when patients have clenched their jaws, and cannot guarantee unobstructed breathing, nor can they effectively prevent patients from biting their tongues and improve ventilation.
A tongue depressor for preventing biting has been designed, including an outer perimeter barrier and an inner perimeter anti-biting block. It is equipped with a tooth prying bracket and an elastic band. It is inserted and fixed in the mouth by prying open the teeth, and a ventilation hole is provided in the outer perimeter barrier to ensure ventilation.
It enables the rapid fixation of the anti-biting tongue depressor in the mouth when the jaw is clenched, ensuring unobstructed breathing for the patient and effectively preventing self-injury by biting the tongue.
Smart Images

Figure CN224140942U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-self-injury devices, specifically to a device for preventing patients from biting their tongues and injuring themselves. Background Technology
[0002] Some patients with mental illnesses accompanied by physical illnesses may exhibit self-harm or suicidal behavior due to a lack of insight, being dominated by auditory hallucinations and delusions, or being unable to endure the torment of their mental and physical ailments. Even when no dangerous objects are available, biting the tongue can become a way for these patients to harm themselves. Clinically, items such as towels, oropharyngeal tubes, and oral protectors are commonly used as tongue depressors, inserted into the mouth to hold the tongue in place. However, many patients have their jaws clenched during an attack, making it difficult to insert the tongue depressor immediately. Once the teeth are pried open, the tongue depressor is difficult to secure properly and is easily ejected, thus failing to protect the tongue. Furthermore, patients who bite their tongues often experience tongue congestion, edema, or even bleeding. The swollen tongue may impede the patient's breathing. Existing oral protectors only prevent tongue biting and cannot guarantee unobstructed breathing or improve ventilation, thus their function is relatively limited. Utility Model Content
[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a device to prevent patients from biting their tongues and injuring themselves.
[0004] This utility model includes an anti-bite tongue depressor, which includes an outer perimeter of the mouth and a pair of inner mouth anti-bite blocks integrally formed therewith. A vent hole is provided in the middle of the outer perimeter of the mouth, and a through hole is provided inwardly at the top of each of the pair of inner mouth anti-bite blocks. The other end of the through hole protrudes from the outer wall of the outer perimeter of the mouth.
[0005] The pry bar bracket includes a pair of parallel rods that can be inserted into a through hole, a connecting rod connecting the two, and a handheld rod located in the middle of the connecting rod. The middle of the connecting rod is provided with an insertion tube that can be inserted into a vent hole. The inside of the handheld rod is hollow and forms an air outlet channel connected to the insertion tube.
[0006] The elastic band has two ends connected to the tying holes at both ends of the outer perimeter of the opening, and the elastic band is equipped with spring buckles that can adjust its length.
[0007] Preferably, the length of the insertion tube is greater than the depth of the vent hole.
[0008] Preferably, a pair of intraoral anti-bite blocks are located on both sides of the vent.
[0009] Preferably, the anti-bite tongue depressor is made of silicone.
[0010] Preferably, the pry bar bracket is made of rigid plastic.
[0011] Preferably, the length of the pair of parallel rods is greater than the depth of the through hole.
[0012] Preferably, the elastic band is placed over the back of the patient's head and locked in place to prevent the patient from spitting out the tongue depressor.
[0013] The advantages of this invention are: it can both pry open the teeth to insert the anti-bite tongue depressor into the mouth and effectively fix the anti-bite tongue depressor in the mouth, making it more convenient to use. Additionally, it is equipped with a vent to facilitate patient ventilation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 This is a schematic diagram of the pry bar support structure. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0018] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, if terms such as "first" or "second" appear in the description of this utility model, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0019] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] As shown in the attached figure, the present invention includes an anti-bite tongue depressor 1, which includes an outer mouth block 11 and a pair of inner mouth anti-bite blocks 12 integrally formed therewith. A vent hole 13 is provided in the middle of the outer mouth block 11. The top of each pair of inner mouth anti-bite blocks 12 is provided with a through hole 14 extending inward. The other end of the through hole 14 extends out from the outer wall of the outer mouth block 11.
[0021] The pry bar bracket 2 includes a pair of parallel rods 21 that can be inserted into the through hole 14, a connecting rod 22 that connects the two, and a handheld rod 23 located in the middle of the connecting rod 22. The middle of the connecting rod 22 is provided with an insertion tube 24 that can be inserted into the vent hole 13. The inside of the handheld rod 23 is hollow and forms an air outlet channel 25 that communicates with the insertion tube 24.
[0022] The elastic band 3 has two ends connected to the tying holes 15 at both ends of the outer perimeter 11. The elastic band 3 is provided with a spring buckle 31 that can adjust its length.
[0023] In another technical solution, the length of the insertion tube 24 is greater than the depth of the vent hole 13.
[0024] In another technical solution, a pair of intraoral anti-bite blocks 12 are located on both sides of the vent 13 to facilitate ventilation when inserted into the mouth.
[0025] In another technical solution, the anti-bite tongue depressor 1 is made of silicone to prevent the patient from biting it.
[0026] In another technical solution, the pry bar bracket 2 is made of rigid plastic, which is lightweight and durable.
[0027] In another technical solution, the length of a pair of parallel rods 21 is greater than the depth of the through hole 14.
[0028] In another technical solution, the elastic band 3 is fitted around the back of the patient's head and locked to prevent the patient from spitting out the anti-bite tongue depressor 1.
[0029] Working principle: In case of an emergency where a patient bites their tongue, the pair of parallel rods of the pry bar can be inserted into the through holes of the pair of intraoral anti-bite blocks of the tongue depressor to complete the assembly. Then, the intraoral anti-bite blocks are inserted into the patient's mouth at a 45° angle, and the teeth are pried open until the intraoral anti-bite blocks are completely placed in the patient's mouth to effectively press down the tongue and prevent biting. The outer perimeter of the mouth remains outside the mouth. After completion, the pry bar is quickly removed. Finally, the elastic band is stretched backward and placed on the back of the patient's head to prevent the patient from spitting out the tongue depressor.
[0030] The above-described embodiments are only intended to illustrate the technical solution and features of this utility model, and are intended to enable those skilled in the art to implement them. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model are within the scope of protection of this utility model. Anything not described in detail is prior art.
Claims
1. A device for avoiding self-injury by a patient biting his tongue, characterized in that, include The anti-bite tongue depressor (1) includes an outer perimeter baffle (11) and a pair of inner perimeter anti-bite blocks (12) integrally formed therewith. A vent hole (13) is provided in the middle of the outer perimeter baffle (11). The tops of the pair of inner perimeter anti-bite blocks (12) are provided with through holes (14) extending inward. The other end of the through hole (14) extends out from the outer wall of the outer perimeter baffle (11). The pry bar bracket (2) includes a pair of parallel rods (21) that can be inserted into the through hole (14), a connecting rod (22) that connects the two, and a hand-held rod (23) located in the middle of the connecting rod (22). The middle of the connecting rod (22) is provided with an insertion tube (24) that can be inserted into the vent hole (13). The inside of the hand-held rod (23) is hollow and forms an air outlet channel (25) that communicates with the insertion tube (24). The elastic band (3) has its two ends connected to the tying holes (15) at both ends of the outer perimeter of the opening (11). The elastic band (3) is provided with a spring buckle (31) that can adjust its length.
2. The device of claim 1, wherein the device further comprises a tongue guard. The length of the insertion tube (24) is greater than the depth of the vent (13).
3. The device of claim 1, wherein the device further comprises a tongue guard. A pair of intraoral anti-bite blocks (12) are located on both sides of the vent (13).
4. The device of claim 1, wherein the device further comprises a tongue guard. The anti-bite tongue depressor (1) is made of silicone.
5. The device of claim 1, wherein the device further comprises a tongue guard. The pry bar bracket (2) is made of hard plastic.
6. The device of claim 1, wherein the device further comprises a tongue guard. The length of a pair of parallel rods (21) is greater than the depth of the through hole (14).
7. The device of claim 1, wherein the device further comprises a tongue guard. The elastic band (3) is placed on the back of the patient's head and locked.