Light-type oral retractor with adjustable mouth opening and tongue extension

Abstract

The present invention discloses an illumination type oral cavity opener with adjustable mouth opening degree and tongue plate extension degree, wherein the lower end of the tail of the upper palate plate is fixedly installed with an LED lamp bead, the lower ends of the two vertical plates are fixedly installed with an up-and-down adjustment mechanism, the tongue plate is adjusted up and down by the up-and-down adjustment mechanism, and a swing mechanism is movably installed between the tongue plate and the up-and-down adjustment mechanism. The present invention relates to an oral cavity opener, and in particular to an illumination type oral cavity opener with adjustable mouth opening degree and tongue plate extension degree, belonging to the technical field of medical equipment. The present invention uses a spring mechanism to separate the upper palate plate and the tongue plate from the original state to automatically open the oral cavity, saving time and effort; according to the need of oral exposure, the length and angle of the tongue plate (tongue plate) inserted into the oral cavity can be dynamically adjusted to make the position of the tongue plate inserted into the oral cavity and the opening angle more appropriate, and with the help of an observation window, the exposure is more sufficient and the field of vision is clearer under light, which is conducive to the inspection and treatment of the oral cavity.

Description

Technical Field

[0001] The invention relates to an oral cavity stretcher, in particular to an illumination type oral cavity stretcher capable of adjusting the mouth opening degree and the extension and retraction degree of the tongue plate, and belongs to the technical field of medical equipment. Background Art

[0002] The oral cavity is an important organ of the human body. The human body needs to chew, swallow, and breathe through the oral cavity. It involves the important digestive and respiratory systems of the human body and is the only way for the human body to breathe freely. It plays a very important role in human life. In addition, some important medical examinations and treatments also require the oral cavity, such as gastroscopy and bronchoscopy, gastric tube placement, life-saving tracheal intubation, and transtracheal spraying. Some sputum suction, oral care, and dental treatments must also be performed in the oral cavity. Therefore, whether the oral cavity can be quickly, effectively, and fully exposed is closely related to whether medical examinations and treatments can be carried out efficiently and accurately.

[0003] At present, in clinical work, it is sometimes necessary to open the patient's mouth as much as possible and expose it clearly to facilitate observation and treatment. Some instruments that can open the mouth include tooth pads, rotating expansion mouth openers, spiral mouth openers, gastroscope bite devices, oropharyngeal ventilation tubes, laryngoscopes and video laryngoscopes.

[0004] The dental pad can be placed between the upper and lower teeth, and is simply used to separate the teeth and the tongue to prevent bites. The mouth opening height is about 15mm. Both the rotating mouth opener and the spiral mouth opener forcefully open the mouth, but because the handle is blocked in the middle of the lips after the mouth is opened, it blocks the field of vision and is not conducive to further operations in the mouth. In addition, the two forks of the rotating mouth opener are very long. If it is opened and inserted into the mouth without restriction, there is a risk of stabbing the upper jaw. The spiral mouth opener is forcibly rotated and pushed forward, which can easily damage the teeth. The bite of the gastroscope is placed in the mouth of the person undergoing gastroscopy. Its front and rear diameters are consistent. It is suitable for people who actively cooperate with the treatment, but not for "those who refuse to open their mouths". The opening is high. The laryngoscope and video laryngoscope are used to pull the patient's mandible, press the tongue, and expose the throat after being inserted into the mouth for tracheal intubation. The same thing about the two is that there is a light source at the front end of the tongue depressor blade, and the light is projected to the part of the throat. The blades are replaced with large, medium, and small sizes before or during the operation according to the age of the patient. They are all used to assist in tracheal intubation. Other structures outside the throat cannot be seen clearly, so they can only be used for intubation. The difference between the two is that the former is to observe the throat with the naked eye for intubation, and the latter is to display the image of the throat intuitively on the electronic screen, which is an upgraded version of the ordinary laryngoscope. In summary, the above instruments either open the mouth to a limited extent or open the mouth by pulling the mandible. If there is a light source, it only projects light to the part of the throat, and the entire mouth cannot be illuminated and in the field of vision. The tongue depressor blade of the laryngoscope cannot be adjusted in length during operation. Replacing the blade may delay rescue time. They each perform a specific function, but cannot achieve functional intercommunication or complementarity, let alone include all functions.

[0005] In the past, textbooks have instructed people to "insert fingers into the mouth to remove foreign objects." This is blind, unscientific, and even dangerous. It may cause the fingers to be bitten or the foreign objects to be blindly pushed deeper. Such tragic cases occur frequently across the country and should be avoided in the new era of continuous technological progress. At present, there is no oral retractor that integrates many functions and fits the natural structure of the human body. Such a device can automatically open the upper and lower jaws of the mouth in the opposite direction at the same time, fit the curvature of the upper jaw, fully expose the mouth and throat, illuminate the entire mouth, and the mouth opening can be adjusted as needed. The tongue plate part of the tongue depressor can also be adjusted to any degree of extension, so that the mouth can be opened to the maximum position, thereby achieving the purpose of exposing the tongue, uvula, buccal mucosa, tonsils, and even the esophagus and glottis structure in the mouth, which is conducive to clinical operation and precise treatment. In other words, there is currently no integrated oral retractor that can complete all the functions of the above-mentioned devices. The present invention is to construct such a new product and new species. If someone is choking with a foreign object stuck in the throat, is in critical condition, or needs emergency endotracheal intubation, such a new product can fully open the mouth within 10 to 20 seconds, see the foreign object clearly and quickly remove it, or easily insert a tube, thus saving a life, achieving rapid and effective rescue, and precise treatment, for the benefit of mankind. Summary of the invention

[0006] The object of the present invention is to provide a light-illuminating oral cavity stretcher capable of adjusting the mouth opening degree and the extension and retraction degree of the tongue plate, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an illuminated oral retractor capable of adjusting the mouth opening degree and the extension and retraction degree of the tongue plate, comprising an upper jaw plate and a tongue plate, wherein the tongue plate is arranged at the lower end of the upper jaw plate, and vertical plates are extended downward on both sides of the tail of the upper jaw plate, and an LED lamp bead is fixedly installed at the lower end of the tail of the upper jaw plate, and an up-and-down adjustment mechanism is fixedly installed at the lower ends of the two vertical plates, and the tongue plate is adjusted up and down by the up-and-down adjustment mechanism, and a swing mechanism is movably installed between the tongue plate and the up-and-down adjustment mechanism, and the swing mechanism comprises a rotating adjustment seat and a rotating block, and the rotating block rotates through a rotating shaft It is installed at the upper end of the rotating adjustment seat, and the tongue plate is swingably set with the rotating shaft as the axis. A plug-in slot is provided at the upper end of the rotating block, and the tongue plate is slidably plugged into the plug-in slot along the axis direction thereof. A supporting threaded rod is rotatably installed at the lower ends of the two vertical plates, and a fixing slot hole is provided at the tail end of the tongue plate, and the end of the supporting threaded rod away from the rotating end is plugged into the fixing slot hole. A fixed tightening mechanism is rotatably connected to the supporting threaded rod, and the end of the supporting threaded rod away from the rotating end is fixed to the tail end of the tongue plate through the fixed tightening mechanism, and also includes a spring mechanism, and the spring mechanism presses down the end of the tongue plate under the upper jaw plate.

[0008] As a preferred technical solution of the present invention, the tongue plate includes a tongue plate body, a downwardly bent lower portion is provided at the rear end of the tongue plate body, and a fixing slot is provided on the end face of the lower folded portion, a tightening knob is rotatably installed at the lower end of the rotating block, and the upper end of the tightening knob passes through the plug-in slot.

[0009] As a preferred technical solution of the present invention, the end of the tongue plate body facing away from the lower folding portion is placed at the lower end of the upper jaw plate, and the end is provided with a bending portion extending downward, and the bending portion is provided with a central axis marking hole placed on the central axis, and armrest plates are fixedly connected on both sides of the connection between the tongue plate body and the lower folding portion.

[0010] As a preferred technical solution of the present invention, the up and down adjustment mechanism includes a fixed plate fixed between two vertical plates, and a height adjustment threaded rod is rotatably connected to the fixed plate through a bearing, and a knob rotatably installed at the lower end of the height adjustment threaded rod is provided at the lower end of the fixed plate, and a height adjustment threaded hole rotatably connected to the height adjustment threaded rod is provided at the lower end of the rotation adjustment seat.

[0011] As a preferred technical solution of the present invention, the end faces of the two vertical plates are provided with lifting grooves, and both sides of the rotating adjustment seat are fixedly connected with limit plates that are slidably installed in the lifting grooves.

[0012] As a preferred technical solution of the present invention, the end of the upper jaw plate extends upward and is arranged in an arc shape. The upper end surface of the upper jaw plate is fixedly covered with a layer of non-toxic soft surface material, and an incisor groove is opened at the upper end of the connection between the upper jaw plate and the vertical plate.

[0013] As a preferred technical solution of the present invention, the spring mechanism includes a spring, which is sleeved on the supporting threaded rod. One end of the spring is fixed to the rotating end of the supporting threaded rod, and the other end is sleeved on the outside of the fixed tightening mechanism and tightly attached to the lower end surface of the tongue plate.

[0014] As a preferred technical solution of the present invention, the spring mechanism includes a return spring, the return spring is sleeved on the rotating shaft at the upper end of the limiting plate, and the elastic end of the return spring is fixedly connected to the lower end of the plug-in slot.

[0015] As a preferred technical solution of the present invention, the fixing and tightening mechanism includes a bottom nut rotatably connected to a supporting threaded rod, a sleeve is fixedly connected to the upper end of the bottom nut, the sleeve is inserted into a fixed slot, a thread is fixedly provided on the outer wall of the sleeve, and a fixing nut is rotatably connected to the sleeve through the thread.

[0016] As a preferred technical solution of the present invention, a circle of rubber gasket is fixedly provided on the outside of the connection between the bottom nut and the sleeve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention uses a spring mechanism to separate the upper palate plate and the tongue plate from the original position to automatically open the oral cavity, saving time and effort; the length and angle of the tongue plate (tongue plate) inserted into the oral cavity can be dynamically adjusted according to the need for oral exposure, so that the position of the tongue plate inserted into the oral cavity and the opening angle are more appropriate, and with the help of an observation window, the exposure is more complete and the field of vision is clearer under light, which is conducive to inspection and treatment in the oral cavity;

[0019] The present invention can adjust the distance between the upper palate plate and the tongue plate through the up and down adjustment mechanism, so as to adjust the mouth opening degree of the oral cavity, so that the mouth opening degree of the oral cavity can be large or small, meeting the needs of patients with various mouth opening degrees;

[0020] In the present invention, both the upper palate plate and the tongue plate end are provided with a curved portion that fits the human oral cavity, so as to better fit the human oral cavity;

[0021] The invention provides a central axis marking hole at the end of the tongue plate, so as to conveniently indicate the direction for finding the esophageal opening and the glottis in special circumstances. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the present invention from a third viewing angle;

[0025] Figure 4 It is a structural schematic diagram of the tongue plate in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the swing mechanism in the present invention;

[0027] Figure 6 It is a structural schematic diagram of the fixing and tightening mechanism in the present invention.

[0028] In the figure: 1. upper jaw plate; 101. incisor groove; 102. LED lamp bead; 103. lamp bead switch; 104. battery; 2. tongue plate; 201. bending part; 202. center axis marking hole; 203. tongue plate body; 204. armrest plate; 205. lower folding part; 206. fixing slot hole; 3. fixing and tightening mechanism; 301. bottom nut; 302. fixing nut; 303. rubber gasket; 304. sleeve; 4. supporting threaded rod; 401. rotating frame; 5. lifting slot; 6. vertical plate; 7. up and down adjustment mechanism; 701. height adjustment threaded rod; 702. bearing; 703. fixing plate; 704. knob; 8. swing mechanism; 801. limit plate; 802. rotating block; 803. plug-in slot; 804. rotating adjustment seat; 805. height adjustment threaded hole; 806. tightening knob; 9. spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1-6The present invention provides an illuminated oral retractor with adjustable mouth opening degree and tongue plate extension degree, comprising an upper palate plate 1 and a tongue plate 2, wherein the tongue plate 2 is arranged at the lower end of the upper palate plate 1, and the upper palate plate 1 is divided into a jaw surface and an inner surface, wherein the jaw surface is substantially consistent with the curvature of the upper palate of the human body, and a layer of soft surface material is covered on its surface, so that the soft surface can buffer pressure when in contact with the human body, and the specific material is non-toxic material such as medical rubber, and the inner surface faces the direction of the oral cavity and throat, and vertical plates 6 are extended downward on both sides of the tail of the upper palate plate 1, and the middle and upper areas of the vertical plates 6 are observation windows for the operator, and the lower part is a handle for easy holding, and an LED lamp bead 1 is fixedly installed at the lower end of the tail of the upper palate plate 1 02, the end of the upper jaw plate 1 extends upward and is arranged in an arc shape. The upper end surface of the upper jaw plate 1 is fixedly covered with a layer of non-toxic soft surface material, and an incisor groove 101 (upper incisor) is opened at the upper end of the connection between the upper jaw plate 1 and the vertical plate 6, which is covered with the same soft surface material as the upper end surface of the upper jaw plate 1. It is the position of the upper incisor after the device is inserted into the oral cavity, ensuring that the upper incisor is clamped therein after it is inserted into the oral cavity, so that the device is stable. An arc portion is provided below the upper end of the vertical plate 6, and a battery 104 is fixedly installed in the arc portion, and a lamp bead switch 103 is fixedly installed on the side end of the battery 104. The lower ends of the two vertical plates 6 are fixedly installed with an up and down adjustment mechanism 7, the tongue plate 2 is adjusted up and down by an up and down adjustment mechanism 7, the up and down adjustment mechanism 7 includes a fixed plate 703 fixed between the two vertical plates 6, the fixed plate 703 is rotatably connected with a height adjustment threaded rod 701 through a bearing 702, the lower end of the fixed plate 703 is provided with a knob 704 rotatably installed at the lower end of the height adjustment threaded rod 701, a swing mechanism 8 is movably installed between the tongue plate 2 and the up and down adjustment mechanism 7, the swing mechanism 8 includes a rotation adjustment seat 804 and a rotating block 802, the lower end surface of the rotating block 802 is provided with a lower incisor groove adapted to the incisor groove 101, the rotation adjustment seat 804 is U-shaped, but the rotation The upper end of the dynamic adjustment seat 804 can be closed or open depending on the force conditions. It is preferably open, that is, U-shaped, which will not block the swing of the tongue plate 2. A height adjustment threaded hole 805 is provided at the lower end of the rotation adjustment seat 804 to be rotatably connected to the height adjustment threaded rod 701. The rotating block 802 is rotatably installed on the upper end of the rotation adjustment seat 804 through the rotating shaft, and the tongue plate 2 is swung around the rotating shaft. A plug-in groove 803 is provided at the upper end of the rotation block 802, and the tongue plate 2 is slidably plugged into the plug-in groove 803 along its central axis direction. The top of the plug-in groove 803 is semi-annular, and can also be designed to be in a closed state according to the actual force conditions.The lower ends of the two vertical plates 6 are rotatably mounted with a supporting threaded rod 4, and the rear end of the tongue plate 2 (i.e., the end face of the lower folding portion 205) is provided with a fixing slot 206, and the end of the supporting threaded rod 4 away from the rotating end is inserted into the fixing slot 206, and a fixing tightening mechanism 3 is rotatably connected to the supporting threaded rod 4, and the supporting threaded rod 4 away from the rotating end is fixed to the rear end of the tongue plate 2 (i.e., the end face of the lower folding portion 205) by the fixing tightening mechanism 3, and also includes a spring mechanism. When the tongue plate 2 and the bending portion 201 of the upper jaw plate 1 are closed (in-situ state), they are inserted into the oral cavity, and then the spring mechanism is used to make it easier for the operator to open the oral cavity with the help of elastic return. The spring mechanism presses down the end of the tongue plate 2 placed below the upper jaw plate 1 (the end with the bending portion 201), and adjusts the angle of the tongue plate through elastic force, so that the tongue plate fits more closely with the human tongue body, exposing the oral cavity more fully.

[0032] The tongue plate 2 includes a tongue plate body 203, a downwardly bent lower portion 205 is provided at the rear end of the tongue plate body 203, a concave groove is provided at the end of the lower folding portion 205 away from the tongue plate body 203, which is convenient for the operator to hold, and a fixing slot 206 is provided on the end face of the lower folding portion 205. When the tongue plate body 203 is in the original position, the end away from the lower folding portion 205 is placed at the lower end of the upper jaw plate 1, and the end is provided with a downwardly extending bending portion 201, which can keep in contact with the human tongue surface when unfolded, and a central axis marking hole 202 is provided on the bending portion 201, which is placed on the central axis, to indicate the direction for finding the esophageal opening and the glottis in special circumstances, forming a shape It is shaped like a longitudinal slot, and its proximal end extends into a circular hole, which has a positioning function. Armrest plates 204 are fixedly connected on both sides of the connection between the tongue plate body 203 and the lower folding part 205, which is convenient for grasping. A tightening button 806 is rotatably installed at the lower end of the rotating block 802, and the upper end of the tightening button 806 passes through the plug-in slot 803. When rotating, it presses against the bottom surface of the tongue plate body 203 plugged into the plug-in slot 803 to fix the tongue plate body 203. The tightening button 806 mainly includes a knob, a bolt and a rubber pad. The knob is fixed at the lower end of the bolt, and the rubber pad is fixed at the upper end of the bolt to prevent the tightening button 806 from damaging the bottom of the tongue plate body 203 when tightening.

[0033] Among them, the end faces of the two vertical plates 6 are both provided with lifting grooves 5, which are vertically arranged. Both sides of the rotating adjustment seat 804 are fixedly connected with limit plates 801 installed in the lifting grooves 5 for sliding up and down. The side ends of the lifting grooves 5 are provided with scales to achieve controllable and quantitative within a certain range.

[0034] Among them, the spring mechanism includes a spring 9, which is sleeved on the supporting threaded rod 4, one end of the spring 9 is fixed to the rotating end of the supporting threaded rod 4, and the other end is sleeved on the outside of the fixing and tightening mechanism 3 and tightly attached to the lower end surface of the tongue plate 2.

[0035] Among them, the fixed tightening mechanism 3 includes a bottom nut 301 rotatably connected to the supporting threaded rod 4, and a sleeve 304 is fixedly connected to the upper end of the bottom nut 301. The inner wall of the sleeve 304 is smooth, and the sleeve 304 is inserted into the fixed slot 206. The outer wall of the sleeve 304 is fixedly provided with a thread, and is rotatably connected to the fixing nut 302 through the thread.

[0036] Among them, a circle of rubber gasket 303 is fixedly provided on the outside of the connection between the bottom nut 301 and the sleeve 304, which will not slip after being tightened, and has a good fixing effect.

[0037] Among them, a rotating frame 401 is fixed at the rotating end of the supporting threaded rod 4, the rotating frame 401 is U-shaped, and rotates at the lower ends of the two vertical plates 6. The end of the spring 9 is fixed at the upper end of the rotating frame 401. The rotating frame 401 is placed above the knob 704, which will not affect the rotation of the knob 704 and is convenient for operation.

[0038] Among them, the end surface of the vertical plate 6 facing the supporting threaded rod 4 can be covered with a cover plate, and the cover plate is placed under the tongue plate 2, which will not affect the rotation of the tongue plate 2. The lower end of the cover plate does not exceed the knob 704, and will not affect the rotation of the knob 704. The cover plate can also be fixedly set on the end of the vertical plate 6 away from the supporting threaded rod 4. Similarly, it will not affect the rotation of the tongue plate 2 and the rotation of the knob 704.

[0039] The working principle of the present invention will be specifically described below: in the original position, the upper jaw plate 1 and the tongue plate 2 overlap to form a bird's beak shape, and the fixing and tightening mechanism 3 fixes the position of the tongue plate 2. When in use, turn on the LED lamp bead 102 to start the lighting to facilitate the observation of the interior of the lower oral cavity, insert the closed ends of the upper jaw plate 1 and the tongue plate 2 into the patient's oral cavity, quickly send the distal ends of the tongue plate and the jaw plate into the oral cavity to the upper tooth fossa position, rotate the fixing nut 302 and remove it from the sleeve 304, the upper end of the spring 9 pushes up the lower folding part 205 to press the bent part 201 downward, and the tongue plate 2 is separated from the original position overlapping with the upper jaw plate 1, and the rotating shaft between the rotating adjustment seat 804 and the rotating block 802 is rotated to make the bent part 201 of the end of the tongue plate 2 quickly open downward. At this time, the operator can adjust the depth of the tongue plate 2 to a suitable position through the observation window and the plug-in slot 803, and rotate the tightening button 806 at the lower end of the rotating block 802 to tighten the tongue plate body 203. The tongue plate 2 is fixed by rotating the shaft between the adjusting seat 804 and the rotating block 802 to adjust the opening angle of the tongue plate 2 so that the tongue plate fits the human tongue and the space in the oral cavity is increased to a certain extent. The bottom nut 301 is rotated to move it to the fixing slot 206. The sleeve 304 is inserted into the fixing slot 206, and the fixing nut 302 is rotated and fixed on the sleeve 304. The fixing nut 302 and the bottom nut 301 fix the lower folding part 205. At this time, the structure in the oral cavity is fully exposed, and necessary inspection and treatment can be carried out. If the size of the mouth opening needs to be adjusted, the upper and lower adjustment mechanism is activated. This structure is not used in about 80% of the patients, and is only used for patients with a small oral opening. Of course, in order to expose better and make the observation window larger, the upper and lower adjustment mechanism can be used to adjust the tongue plate 2 downward, and the height of the swing mechanism 8 is adjusted by rotating the knob 704, thereby adjusting the distance between the tongue plate 2 and the upper palate 1.

[0040] Embodiment 2:

[0041] The difference from the first embodiment is that the spring mechanism includes a return spring, which is sleeved on the rotating shaft at the upper end of the limit plate 801, and the elastic end of the return spring is fixedly connected to the lower end of the plug-in slot 803. The spring mechanism can also be a leaf spring. Two leaf springs are provided and fixed between the lower folding portion 205 and the side end of the vertical plate 6 to press the front end of the tongue plate 2 downward. The use principle is the same as that of the first embodiment (not shown in the figure).

[0042] In summary, the light-illuminating oral retractor capable of adjusting the mouth opening degree and the extension and retraction degree of the tongue plate of the present invention can separate the upper palate plate 1 and the tongue plate 2 from the original state through a spring mechanism to automatically open the oral cavity, thereby saving time and effort. The length and angle of the tongue plate 2 (tongue plate) inserted into the oral cavity can be dynamically adjusted according to the need for oral exposure, so that the position of the tongue plate inserted into the oral cavity and the opening angle are more appropriate, and with the help of the observation window, the exposure is more complete and the field of vision is clearer under light, which is conducive to the inspection and treatment in the oral cavity. The distance between the upper palate plate 1 and the tongue plate 2 can be adjusted through the upper and lower adjustment mechanisms 7 to adjust the mouth opening degree of the oral cavity, so that the mouth opening degree of the oral cavity can be increased or decreased to meet the needs of patients with various mouth opening degrees. The ends of the upper palate plate 1 and the tongue plate 2 are both provided with a curved portion that fits the human oral cavity, so that they fit the human oral cavity more closely. By providing a central axis marking hole 208 at the end of the tongue plate 2, it is convenient to indicate the direction for finding the esophageal opening and the glottis in special cases.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An illumination oral retractor capable of adjusting the mouth opening degree and the extension and retraction degree of the tongue plate, comprising an upper palate plate (1) and a tongue plate (2), wherein the tongue plate (2) is arranged at the lower end of the upper palate plate (1), It is characterized in that Vertical plates (6) extend downwardly on both sides of the tail of the upper jaw plate (1); an LED lamp bead (102) is fixedly mounted on the lower end of the tail of the upper jaw plate (1); an up-and-down adjustment mechanism (7) is fixedly mounted on the lower ends of the two vertical plates (6); the tongue plate (2) is adjusted up and down by the up-and-down adjustment mechanism (7); a swing mechanism (8) is movably mounted between the tongue plate (2) and the up-and-down adjustment mechanism (7); the swing mechanism (8) comprises a rotating adjustment seat (804) and a rotating block (802); the rotating block (802) is rotatably mounted on the upper end of the rotating adjustment seat (804) via a rotating shaft; the tongue plate (2) is swung around the rotating shaft; the rotating block (802) is rotatably mounted on the upper end of the rotating adjustment seat (804); 802) is provided with an insertion groove (803) at the upper end, the tongue plate (2) is slidably inserted into the insertion groove (803) along the axis direction thereof, a supporting threaded rod (4) is rotatably installed at the lower ends of the two vertical plates (6), a fixing slot hole (206) is provided at the rear end of the tongue plate (2), the end of the supporting threaded rod (4) away from the rotating end is inserted into the fixing slot hole (206), a fixing tightening mechanism (3) is rotatably connected to the supporting threaded rod (4), and the end of the supporting threaded rod (4) away from the rotating end is fixed to the rear end of the tongue plate (2) through the fixing tightening mechanism (3), and also includes a spring mechanism, the spring mechanism presses down the end of the tongue plate (2) placed below the upper jaw plate (1); The tongue plate (2) comprises a tongue plate body (203), the rear end of the tongue plate body (203) is provided with a downwardly bent lower portion (205), and a fixing slot (206) is provided on the end surface of the lower bent portion (205), and a tightening knob (806) is rotatably mounted on the lower end of the rotating block (802), and the upper end of the tightening knob (806) passes through the plug-in slot (803); The end of the tongue plate body (203) facing away from the lower folding portion (205) is placed at the lower end of the upper jaw plate (1), and the end is provided with a bending portion (201) extending downward, and the bending portion (201) is provided with a central axis marking hole (202) located on the central axis, and armrest plates (204) are fixedly connected on both sides of the connection between the tongue plate body (203) and the lower folding portion (205); The up-down adjustment mechanism (7) comprises a fixed plate (703) fixed between two vertical plates (6); a height adjustment threaded rod (701) is rotatably connected to the fixed plate (703) via a bearing (702); a knob (704) is rotatably mounted on the lower end of the height adjustment threaded rod (701) at the lower end of the fixed plate (703); and a height adjustment threaded hole (805) rotatably connected to the height adjustment threaded rod (701) is provided at the lower end of the rotation adjustment seat (804); The end surfaces of the two vertical plates (6) are both provided with lifting grooves (5), and both sides of the rotating adjustment seat (804) are fixedly connected with limit plates (801) which are slidably installed in the lifting grooves (5) up and down; The end of the upper jaw plate (1) extends upward and is arranged in an arc shape. The upper end surface of the upper jaw plate (1) is fixedly covered with a layer of non-toxic soft surface material, and an incisor groove (101) is provided at the upper end of the connection between the upper jaw plate (1) and the vertical plate (6); The spring mechanism comprises a spring (9), the spring (9) is sleeved on the supporting threaded rod (4), one end of the spring (9) is fixed to the rotating end of the supporting threaded rod (4), and the other end is sleeved on the outside of the fixing and tightening mechanism (3) and is in close contact with the lower end surface of the tongue plate (2); The spring mechanism comprises a return spring, the return spring is sleeved on the rotating shaft at the upper end of the limit plate (801), and the elastic end of the return spring is fixedly connected to the lower end of the plug-in slot (803); The fixing and tightening mechanism (3) comprises a bottom nut (301) rotatably connected to the supporting threaded rod (4); a sleeve (304) is fixedly connected to the upper end of the bottom nut (301); the sleeve (304) is inserted into the fixing slot (206); a thread is fixedly provided on the outer wall of the sleeve (304), and the fixing nut (302) is rotatably connected to the sleeve via the thread; A circle of rubber gasket (303) is fixedly provided outside the connection between the bottom nut (301) and the sleeve (304).

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