Improved mouthguard

Abstract

To provide an improved mouthguard A that allows users to drink water without using their hands while wearing it in their mouth, even while riding a motorcycle, bicycle, or other vehicle. [Solution] The present invention provides an improved mouthguard that allows drinking water to be performed while being worn in the mouth of a person, comprising a mouthguard body 1 that abuts against the upper jaw teeth and a water passage 2 attached to the mouthguard body 1, through which water can be supplied to the mouth, the mouthguard body 1 has an inner wall portion 13 that encloses and holds the upper jaw teeth, an outer wall portion 14 and a bottom wall portion 15 that connects the two, the outer wall portion 14 has a bulging portion 14A that bulges outward and is provided in the bulging portion 14A for insertion of the water passage 2, and the tip portion 22 of the water passage 2 is housed in the bulging portion 14A, the improved mouthguard A.

Description

Technical Field

[0001] The present invention relates to a mouthguard that allows drinking water while being worn, and more particularly to an improved mouthguard A that allows drinking water without using hands even while riding a bicycle or the like and traveling.

[0002] Conventionally, for sports, mouthguards have been used in combat sports such as boxing, rugby, ice hockey, etc. to avoid obstacles that occur during collisions during competitions, such as tooth fractures, tongue injuries, lip lacerations, concussions, etc. (Patent Document 1, Patent Document 3).

[0003] Wearing a mouthguard during sports is extremely useful because these accidents can be prevented. On the other hand, in recent years, motocross races, cycle road races such as bicycles, etc. have been widely held.

[0004] Therefore, the number of participating athletes has increased across a wide age range, including young people and older people regardless of gender, and the occurrence of careless accidents has also been increasing accordingly.

[0005] In recent years, during motocross races and cycle road races, when falling, in order to prevent the shock received in the mouth, participating athletes have started wearing mouthguards for safety. However, different from the above-mentioned combat sports such as boxing, rugby, ice hockey, etc., in the case of motocross races, cycle road races, etc., since the mouthguard is worn continuously for a long time, it is necessary to replenish moisture at appropriate intervals during driving.

[0006] However, in the state of wearing such a conventional mouthguard, one has to temporarily release the hand from the handle being held, bite the tube protruding from a beverage container or the like containing water or the like to drink water, and then grip the handle again. Therefore, it is impossible to drink water without removing the hand from the handle at least once. Therefore, drinking water requires the competitor to take their hands off the handlebars each time, which poses a high degree of danger.

[0007] As drinking water requires the series of extra actions described above, motorbikes, bicycles, etc., have to temporarily slow down somewhat. This inevitably results in a loss of time. In competitions where time is of the essence, such time losses must be avoided as much as possible.

[0008] On the other hand, while riding at a set speed, riders may take their hands off the handlebars to concentrate on drinking water, which can inadvertently lead to falls and is extremely dangerous.

[0009] Therefore, from the perspective of avoiding such time loss or the risk of falls, there has been a strong demand for devices or methods that allow for safe drinking while riding a motorbike, bicycle, etc., without requiring a series of actions, and while wearing a mouthguard.

[0010] Incidentally, as shown in Patent Document 3, some mouthpieces equipped with tubes through which liquid passes have been developed for medical use. This device consists of a mouthpiece with a suction tube attached, which suctions saliva from the oral cavity and expels it to the outside through the suction tube.

[0011] However, this mouthpiece is used in the medical field to aspirate saliva from patients during examinations such as gastroscopy, and is not intended for use in sports such as motorbike or bicycle racing. Moreover, they are completely different and fundamental in terms of their intended use and functional effects. Unfortunately, no such device or method has yet been developed for use as a mouthguard in sports. [Prior art documents] [Patent Documents]

[0012] [Patent Document 1] Japanese Utility Model Publication No. 1-147868 [Patent Document 2] Japanese Patent Application Publication No. 3-244480 [Patent Document 3] Utility Model Registration No. 3064136 [Overview of the Initiative] [Problems that the invention aims to solve]

[0013] This invention was made against the backdrop of the above-mentioned problems. In other words, the object of the present invention is to provide an improved mouthguard A that allows drinking water without using hands while wearing it in the mouth, even while riding a motorcycle, bicycle, or the like. [Means for solving the problem]

[0014] Based on the above background, the inventors conducted diligent research and found that the aforementioned problems with conventional mouthguards can be solved by creating a water channel from a beverage bottle. This invention is based on this finding.

[0015] In other words, the present invention relates to (1) an improved mouthguard A that allows a person to drink water while wearing it in their oral cavity, comprising a mouthguard body 1 that contacts the upper jaw teeth and a water passage 2 attached to the mouthguard body 1, wherein water can be supplied to the oral cavity through the water passage 2.

[0016] Furthermore, the present invention relates to (2) an improved mouthguard A according to claim 1, wherein the mouthguard body 1 has an inner wall portion 13 and an outer wall portion 14 that enclose and hold the upper jaw dentition, and a bottom wall portion 15 that connects the two, and the outer wall portion 14 has a bulging portion 14A that bulges outward, and the bulging portion 14A is provided with an insertion hole through which a water passage pipe 2 can be inserted, and the tip portion 22 of the water passage pipe 2 is housed in the bulging portion 14A.

[0017] Moreover, the present invention resides in the improved mouse guard A according to claim 2, characterized in that it has a bulging upright wall portion 14A1 standing in front of the bulging portion 14A, and an insertion hole H is formed in the bulging portion 14A.

[0018] Moreover, the present invention resides in the improved mouse guard A according to claim 2, characterized in that a support guide portion G for holding the tip portion 22 of the water pipe 2 is provided on the outer wall portion 14.

[0019] Moreover, the present invention resides in the improved mouse guard A according to claim 1, characterized in that the mouse guard main body 1 has an inner wall portion 13 for holding so as to wrap around the upper jaw dental arch portion, an outer wall portion 14, and a bottom wall portion 15 connecting between the two, and a discharge port 22A is formed by directly fixing the tip port of the water pipe 2 to the outer wall portion 14 and opening it.

[0020] Moreover, the present invention resides in the improved mouse guard A according to claim 1, characterized in that a beverage container for supplying water is connected to the base end portion 24 of the water pipe 2. In addition, as long as it is along the object of the present invention, a configuration in which the above (1) to (6) are appropriately combined is also possible.

Effects of the Invention

[0021] The present invention is (1) an improved mouse guard A that can be used for drinking while being worn in a human oral cavity, comprising a mouse guard main body 1 that abuts against the upper jaw dental arch portion and a water pipe 2 attached to the mouse guard main body 1, and water can be supplied to the oral cavity through the water pipe 2, so that it is possible to drink water without taking the hand off the handle during driving of a motorcycle, bicycle, etc. Therefore, both hands can be dedicated to handle operation, which is extremely useful and can contribute to improving the performance of athletes.

[0022] (2) The present invention provides that the mouthguard body 1 has an inner wall portion 13 and an outer wall portion 14 that enclose and hold the upper jaw dentition, and a bottom wall portion 15 that connects the two. The outer wall portion 14 has a bulge portion 14A that bulges outward, and the bulge portion 14A is provided with an insertion hole through which a water passage pipe 2 can be inserted. The tip portion 22 of the water passage pipe 2 is housed in the bulge portion 14A, so that the water passage pipe 2 does not come into strong contact with the gums, and moreover, the tip portion 22 of the water passage pipe 2 does not deform or collapse. Therefore, when the bulge portion 14A becomes negative pressure, water is smoothly discharged from the water passage pipe 2.

[0023] The present invention has (3) a bulging vertical wall portion 14A1 that stands upright in front of the bulging portion 14A, and an insertion hole H is formed in this bulging portion 14A, so when an insertion hole H is formed in this bulging vertical wall portion 14A1, the insertion hole H also becomes vertical. Therefore, when the water pipe 2 is inserted, its tip portion 22 is reliably positioned along the outer wall portion 14, and the direction of the tip portion 22 is positioned toward the back of the opening.

[0024] In the present invention, (4) a support guide portion G is provided on the outer wall portion 14 to hold the tip portion 22 of the water passage pipe 2, so that the water passage pipe 2 fits between the outer wall portion 14 and the support guide portion G and is stably positioned.

[0025] The present invention provides that (5) the mouthguard body 1 has an inner wall portion 13 and an outer wall portion 14 that enclose and hold the upper dental arch, and a bottom wall portion 15 that connects the two, and the tip of the water passage pipe 2 is directly fixed to the outer wall portion 14 to form an open outlet 22A, so that the tip 22 of the water passage pipe 2 does not come into strong contact with the gums at all. Moreover, no support guide is required.

[0026] In this invention, (6) a drinking container for supplying water is connected to the main end 24 of the water pipe 2, so that the drinking container can be attached to the vehicle body or clothing. Furthermore, the space between the beverage container and the mouthguard body 1 allows for easy movement of the head up and down or left and right. [Brief explanation of the drawing]

[0027] [Figure 1] Figure 1 is a perspective view from below showing an improved mouthguard according to an embodiment of the present invention. [Figure 2] Figure 2 is a bottom view showing an improved mouthguard according to an embodiment of the present invention. [Figure 3] Figure 3 is a side view showing an improved mouthguard according to an embodiment of the present invention. [Figure 4] Figure 4 is a schematic diagram showing a partially enlarged view of an improved mouthguard according to an embodiment of the present invention, and also shows cross-section A. [Figure 5] Figure 5 is a schematic diagram showing a partially enlarged view of an improved mouthguard according to an embodiment of the present invention, illustrating the state in which the water passage pipe is attached. [Figure 6] Figure 6 is a schematic diagram showing a partially enlarged view of an improved mouthguard according to an embodiment of the present invention, illustrating a state in which it has a bulging vertical wall portion and a water passage pipe is attached. [Figure 7] Figure 7 is a schematic diagram showing an improved mouthguard according to an embodiment of the present invention in a state where it is held in the mouth. [Figure 8] Figure 8 is a schematic diagram illustrating an example in which a water pipe is inserted into and attached to the lid of a beverage bottle. [Figure 9] Figure 9 is a schematic diagram showing a partially enlarged view of an improved mouthguard according to an embodiment of the present invention, illustrating the arrangement relationship between the water passage, the mouthguard body, and the support guide. [Figure 10] Figure 10 is a schematic diagram illustrating the arrangement of the water passage, with its tip fixed and integrated into the bulge, in relation to the mouthguard body. [Modes for carrying out the invention]

[0028] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary. Furthermore, identical elements in the drawings will be denoted by the same reference numeral, and redundant explanations will be omitted. Furthermore, unless otherwise specified, positional relationships such as up, down, left, and right shall be based on the positional relationships shown in the drawings.

[0029] (First Embodiment) The following describes an embodiment of this improved mouthguard A. Figure 1 is a perspective view from below showing an improved mouthguard A according to an embodiment of the present invention. Furthermore, Figure 2 is a bottom view showing an improved mouthguard A according to an embodiment of the present invention, and Figure 3 is a side view showing an improved mouthguard A according to an embodiment of the present invention.

[0030] The improved mouthguard A of the present invention can be described as an improved, special mouthguard for sports use. It not only has the original function of protecting the tissues around the mouth (protective function), but also has the function of allowing the wearer to safely drink water without using their hands while wearing it, even while running (drinking function).

[0031] The improved mouthguard A of the present invention comprises a mouthguard body 1 and a water passage 2 attached to the mouthguard body 1. The water passage 2 serves as a conduit for supplying water from the drinking bottle 3 to the oral cavity when drinking water.

[0032] The mouthguard body 1 is shaped like a horseshoe and is designed to protect (guard) the horseshoe-shaped upper jaw dentition in humans. The mouthguard body 1 is equipped with an upper jaw tooth arch retaining section that encloses and protects the upper jaw teeth.

[0033] This upper jaw dentition retainer has an inner wall portion 13, an outer wall portion 14, and a bottom wall portion 15 connecting them, and is formed to enclose the upper jaw dentition of a person from below upward. In other words, the human upper jaw dentition fits into the U-shaped space R in cross-section, which is formed by the inner wall 13, outer wall 14, and bottom wall 15 of the upper jaw dentition retainer.

[0034] When this improved mouthguard A is placed in the mouth and the upper and lower teeth are closed, the upper dental arch fits into this space S, while the lower dental arch comes into upward contact with the bottom of the upper dental arch retainer mentioned above. In this way, the improved mouthguard A can be securely held and fitted in the mouth between the upper and lower dental arches.

[0035] When the improved mouthguard A is worn in the oral cavity, the surrounding tissues, including the upper dentition, are protected from trauma and other injuries. Here, the upper dentition retainer may have a series of recesses that enclose each individual tooth, or it may be a simpler design without multiple such recesses.

[0036] Incidentally, for types with multiple recesses, custom-made mouthguards that fit the individual's teeth are primarily used. Incidentally, one of the major features of this invention is that the outer wall portion 14 of the mouthguard body 1 has an outwardly bulging portion 14A formed thereon.

[0037] Figure 4 is a schematic diagram showing a partially enlarged view of the improved mouthguard A according to an embodiment of the present invention, and also shows a cross-section of A. In this case, the bulging portion 14A has a part of the outer wall portion 14 that protrudes outward, forming a space S inside. Furthermore, an insertion hole H is provided in the front part of this bulging section 14A (i.e., on the opposite side from the back of the mouth) into which the water passage pipe 2 can be inserted.

[0038] When the water pipe 2 is inserted into the interior through this insertion hole H, its tip 22 is housed within this bulging portion 14A. In other words, the tip 22 of the water pipe 2 is positioned along the outer wall 14 of the bulging portion 14A and is housed in the space S. At this time, the outlet 22A of the tip portion 22 is positioned towards the back of the mouth.

[0039] Figure 5 is a schematic diagram showing a partially enlarged view of the improved mouthguard A according to an embodiment of the present invention, and shows the state in which the water passage pipe 2 is attached. This bulging portion 14A can be applied as long as it is shaped to accommodate the tip portion 22 of the water pipe 2, but it is more preferable to have a bulging vertical wall portion 14A1 that stands upright in front, as shown in the following figure.

[0040] Figure 6 is a schematic diagram showing a partially enlarged view of the improved mouthguard A according to an embodiment of the present invention, and shows a state in which it has a bulging vertical wall portion 14A1 and a water passage pipe 2 is attached. When an insertion hole H is formed in the bulging vertical wall portion 14A1 in this manner, the insertion hole H also stands upright, so when the water pipe 2 is inserted, its tip portion 22 is reliably positioned along the outer wall portion 14, and the direction of the tip portion 22 is positioned toward the back of the opening.

[0041] From the viewpoint of arranging the water passage pipe 2 along the outer wall portion 14, it is preferable that the position where this bulge portion 14A is formed is on the side of the mouthguard body 1. Here, the insertion hole H is sized to allow the water pipe 2 to pass through, and the diameter of the hole matches the diameter of the water pipe 2.

[0042] Because both diameters match, there is no play between them, and the water passage 2 is held stably in the mouthguard. Incidentally, if the size of the insertion hole H is set to be slightly smaller than that of the water pipe 2, when the water pipe 2 is inserted, the water pipe 2 will be pressed into the insertion hole H, resulting in a more secure holding force.

[0043] When the water passage 2 is pushed into the mouthguard body 1 through the insertion hole H, as described above, the tip 22 of the water passage 2 (i.e., a portion of a certain length) will be aligned with the outer wall 14. Here, the outlet 22A at the tip 22 of the water pipe 2 is more preferably inclined, cut at a slight angle rather than vertically, from the viewpoint of increasing the cross-sectional area of ​​water discharge.

[0044] Incidentally, the water passage 2 incorporated into the improved mouthguard A is designed to allow water or other liquids to pass through smoothly, and is also flexibly formed so that it can bend in accordance with the movement of the head while running. Figure 7 is a schematic diagram showing the improved mouthguard A according to an embodiment of the present invention in a state in which it is held in the mouth.

[0045] In this manner, when the athlete wears the improved mouthguard A with the water passage 2 attached, a continuous passage is formed that supplies water from the beverage bottle 3 to the inside of the mouth via the water passage 2, as will be described later.

[0046] When the improved mouthguard A is worn, the water passage 2 passes between the upper and lower lips L and through the insertion hole H of the mouthguard body 1, and its tip 22 is housed in the space S of the bulging portion 14A of the improved mouthguard A. Furthermore, the outlet 22A of the tip 22 is positioned facing the back of the mouth. In this stored position, the tip 22 is positioned between the gums and the outer wall 14 of the bulging portion 14A, and the outlet 22A is positioned towards the back of the mouth, so it does not come into strong contact with the wearer's gums. Furthermore, the protruding bulge 14A does not cause any problems because the lip tissue deforms accordingly.

[0047] (The relationship between a beverage bottle and a water pipe) In the improved mouthguard A of the present invention, the original end 24 of the water passage pipe 2, on the side opposite to the side inserted into the improved mouthguard A, is connected to a water storage container filled with liquid, such as a beverage bottle 3 or a beverage paper container. Here, various types of beverage bottles 3 can be used, but it is preferable that the water passage pipe 2 is detachable from the beverage bottle 3.

[0048] Figure 8 is a schematic diagram illustrating an example in which a water pipe 2 is inserted into and attached to the lid 31 of a beverage bottle 3. The end of the water passage pipe 2 opposite to the side inserted into the improved mouthguard A (the original end 24) is press-fitted into the hole in the lid 31 of the beverage bottle 3, and can be removed by pulling it out. If the water runs out and the drinking bottle 3 becomes empty, simply remove the lid 31 from the bottle body and refill it with water.

[0049] However, as shown in Figure 7 above, it is also possible to permanently fix the water pipe 2 to the lid 31 of the beverage bottle 3 so that it cannot be removed. In that case, if you need to add more water, you will need to remove the lid 31 along with the water pipe 2 and then add the water. As described above, the beverage bottle 3 is connected to the water passage pipe 2 inside the mouth where negative pressure is created when drinking water, so a check valve for air introduction (not shown) should be used.

[0050] (Actual use) Next, let's consider a scenario where a competitor wearing the improved mouthguard A drinks water while riding a motorbike or bicycle. The beverage bottle 3 shall be held in place on the vehicle or on the competitor's clothing. When the competitor is wearing the improved mouthguard A, the upper and lower lips L are closed in a way that allows the water passage 2 to pass through.

[0051] Therefore, even when wearing the improved mouthguard A equipped with water passage 2, the oral cavity is sealed in this manner when the mouth is closed. Next, by inhaling, you create suction and negative pressure inside the mouth. Furthermore, in such actions, it is naturally not necessary to take both hands off the handlebars. As a result, the space S of the bulge 14A formed in the mouthguard body 1 inevitably becomes negative pressure, and water is discharged into the oral cavity from the outlet 22A of the tip 22 of the water passage pipe 2 located in this space S.

[0052] The water in the beverage bottle 3 is discharged into the mouth from the outlet 22A at the tip 22 of the water pipe 2, through the middle section 23, through the section where the mouthguard is located. Even if the vehicle rattles and the competitor's head shakes up and down, the water pipe 2, as mentioned earlier, is a flexible tube, so it can absorb the movement of the competitor's head, whether it shakes up and down or side to side.

[0053] (Second Embodiment) Figure 9 is a schematic diagram showing a partially enlarged view of an improved mouthguard A according to an embodiment of the present invention, illustrating the arrangement relationship between the water passage pipe 2, the mouthguard body 1, and the support guide G. In this embodiment, an insertion hole H is formed in the bulge 14A of the outer wall portion 14 of the mouthguard body 1, through which the water passage pipe 2 is inserted. The tip portion 22 of the water passage pipe 2 is housed in the bulge 14A through this insertion hole H, just as in the first embodiment described above. The difference is that a support guide portion G for holding the tip portion 22 of the water pipe 2 is provided from the outer wall portion 14 of the bulging portion 14A.

[0054] The support guide section G rises from the outer wall section 14, more specifically the outer wall section 14 of the bulging section 14A, and is provided inward in an L-shape. Therefore, when the water pipe 2 is moved parallel to the ground from above and pushed in, its elasticity allows it to easily fit between the support guide section G and the outer wall section 14. The tip 22 of the water pipe 2 fits between the support guide G and the outer wall 14 of the bulging portion 14A, resulting in a stable state without any looseness or movement.

[0055] In other words, by fitting into this support guide section G, the tip 22 is securely positioned towards the back of the mouth, and the tip 22 of the water passage 2 does not move around when drinking water. Naturally, this prevents the tip 22 of the water passage 2 from coming into strong contact with the gums.

[0056] (Third embodiment) Figure 10 is a schematic diagram illustrating the arrangement of the water passage pipe 2, with its tip fixed and integrated with the bulging portion 14A, and showing its relationship to the mouthguard body 1. In this case, the mouthguard body 1 has an inner wall portion 13 and an outer wall portion 14 that enclose and hold the upper jaw dentition, and a bottom wall portion 15 that connects the two, and the outer wall portion 14 has a bulging portion 14A that bulges outward, which is the same as in the embodiment described above.

[0057] A feature of this embodiment is that the tip of the water pipe 2 is directly fixed to the outer wall portion 14 of the bulging portion 14A, forming an open outlet 22A. Therefore, the portion of the tip 22 of the water pipe 2 that corresponds to the drain outlet is directly formed in the outer wall 14. The tip 22 of the water passage pipe 2 does not come into contact with the gums at all, and no support guide is required. Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments as long as its objectives can be achieved.

[0058] For example, in the embodiment described above, water was used as the beverage, but of course, it is not limited to water; it can be applied to any liquid that can be inhaled and drunk, such as carbonated water or sweetened juice. Furthermore, it can be used with various types of mouthguards, including stock type, mouth foam type, and custom-made type.

[0059] Furthermore, various materials are used for mouthguards, but any material that is harmless to the human body is acceptable, such as silicone rubber, polyolefin-based thermoplastic elastomer, ethylene vinyl acetate resin, and polymethyl methacrylate resin. Furthermore, colored, transparent, and translucent options are all available. Similarly, various materials can be used for the water pipe 2, but silicone rubber is particularly preferred.

[0060] Furthermore, by making the part before it enters the mouth bellows-like, it is possible to make the part from the beverage bottle 3 to the mouth more flexible (higher bending ability). Furthermore, as the water passage pipe 2, a hollow pipe with a check valve formed inside to prevent backflow of water is also applicable. Furthermore, the support guide section G can also be formed by rising from the bottom wall section 15 rather than the outer wall section 14. Although the length of the support guide portion G is shown in a short example, it may also be provided continuously from the insertion hole H along the outer wall portion 14 of the upper dental arch retainer.

[0061] The beverage bottle 3 can be any type of bottle that can be attached to the water pipe 2 and supplied with water, such as a regular PET bottle, a rectangular prism, or a water bag. [Industrial applicability]

[0062] The present invention provides an improved mouthguard A that allows a person to drink water without using their hands while wearing it in their oral cavity, comprising a mouthguard body 1 that contacts the upper jaw teeth and a water passage 2 attached to the mouthguard body 1, through which water can be supplied to the mouth. Therefore, even while riding a motorcycle or bicycle, you can drink water without taking your hands off the handlebars. This eliminates the need to take your hands off the handle and concentrate on drinking, allowing you to drink water with peace of mind. Therefore, both hands can be used to concentrate on steering, which is extremely useful, and it can be widely applied not only to bicycles but also to motorcycles, automobiles, and other vehicles. [Explanation of Symbols]

[0063] A...Improved mouthguard A G...Support Guide Section H... Insertion hole L...lips R...space S...space 1. Mouthguard body 13. Interior wall section 14...Outer wall part 14A·Bulge 14A1...Bulging standing wall part 15. Bottom wall section 2... Water pipe 22...Tip 22A...Discharge port 23...Middle section 24...Front end 3. Beverage bottles 31. Bottle caps for beverages

Claims

1. An improved mouthguard that allows drinking water to occur while being worn in the mouth, comprising a mouthguard body that contacts the upper jaw teeth and a water passage attached to the mouthguard body, characterized in that water can be supplied to the mouth through the water passage.

2. The mouthguard body has an inner wall portion and an outer wall portion that enclose and hold the upper jaw dentition, and a bottom wall portion that connects the two, the outer wall portion has a bulge portion that bulges outward, and the bulge portion is provided with an insertion hole through which a water passage pipe can be inserted, and the tip of the water passage pipe is housed in the bulge portion, characterized in that the improved mouthguard according to claim 1.

3. The improved mouthguard according to claim 2, characterized in that it has a bulging wall portion that stands upright in front of the bulging portion, and an insertion hole is formed in this bulging portion.

4. The improved mouthguard according to claim 2, characterized in that a support guide portion for holding the tip of the water pipe is provided on the outer wall portion.

5. The improved mouthguard according to claim 1, characterized in that the mouthguard body has an inner wall portion that encloses and holds the upper jaw teeth, an outer wall portion that connects the two, and the tip of the water passage is directly fixed to the outer wall portion to form an open outlet.

6. The improved mouthguard according to claim 1, characterized in that a drinking container for supplying water is connected to the main end of the water pipe.

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