An oral support care device with adjustable fixed interocclusal angle

Abstract

The application discloses a mouth support nursing device capable of adjusting a fixed bite angle, and relates to the technical field of medical devices.The device comprises a lower bite frame and an upper bite frame which are respectively sleeved on upper and lower teeth; a telescopic sleeve is arranged on the top of the lower bite frame; and an elastic support is arranged between the bottom of the telescopic sleeve and the upper bite frame, and comprises a support part fixed to the bottom of the upper bite frame and an elastic part in an initial state of elastic compression; after the initial constraint is released, the upper bite frame and the lower bite frame are always kept in close contact with the upper and lower teeth to realize self-adaptive following in the process of autonomous mouth opening. The elastic support is arranged, so that the upper bite frame and the lower bite frame are always kept in close contact with the upper and lower teeth to realize self-adaptive following, the device falling off and support failure caused by the patient's unconscious mouth opening are effectively avoided, and the safety and stability of the device in the support process are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an oral support and care device with an adjustable and fixed opening and closing angle. Background Technology

[0002] With the development of society, more and more people are paying attention to oral health. Regular oral care check-ups can detect and treat early oral problems. During oral care check-ups, patients need to keep their mouths open for a long time. Doctors usually use oral support devices to support the patient's mouth and prevent the patient from unconsciously closing their mouth, making the examination easier.

[0003] Chinese patent application CN111248843B, published on December 18, 2020, discloses an adjustable oral support nursing device with a fixed opening angle. The device includes a support frame, comprising an upper support and a lower support. An adjusting device has a piston internally connected to it, with an adjusting rod connected to the right end of the piston. A guide cylinder has a moving rod internally connected to it, with a metal ball on the outside of the moving rod. The adjusting device and guide cylinder have variable resistors corresponding to the metal ball. The adjusting rod drives the piston to move relative to a rectangular groove. A second infusion tube communicates with a hydraulic groove through the rectangular groove. Different relative positions of the upper and lower rectangular grooves with the piston result in different amounts of hydraulic oil input into the hydraulic groove through the second infusion tube, thus ensuring that the angle between the upper and lower support frames on their extended lines remains constant. This structure solves the problems of easy fatigue of the mouth muscles, pain caused by high pressure, and easy damage to teeth during the opening and adjusting process of this device.

[0004] In the prior art, including the aforementioned application, although the opening angle of the mouth can be supported by adjusting the hydraulic oil, once the angle is adjusted, the upper and lower supports only fit and support the upper and lower teeth. However, the support angle is fixed. When the patient subconsciously opens their mouth slightly, since the lower jaw actively opens and closes the mouth, the upper support, due to its fixed support angle, moves with the lower jaw under the gravity of the entire device. This causes the upper support to be unable to actively cooperate with the movement of the upper teeth, which may cause the upper teeth to detach from the support surface, resulting in support failure and the risk of collision. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an oral support and care device with an adjustable and fixed opening and closing angle.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] An adjustable oral support and care device with a fixed opening and closing angle includes:

[0008] The lower and upper jaws are respectively fitted onto the upper and lower teeth;

[0009] A telescopic sleeve is installed at the top of the lower bite frame;

[0010] An elastic support member is provided between the bottom of the telescopic sleeve and the upper bite frame. It includes a support part fixed to the bottom of the upper bite frame and an elastic part that is in an elastically compressed state in the initial state. After the elastic part is released from the initial constraint, it pushes the upper bite frame and the lower bite frame to always keep in contact with the upper and lower teeth, so as to achieve adaptive following during the self-opening process.

[0011] The array is formed by adjustment grooves on the inner wall of the telescopic sleeve;

[0012] The symmetrically arranged arc-shaped elastic blocks on the support include an arc-shaped guide surface at the top and a locking plane at the bottom. The arc-shaped guide surface guides the support to move unidirectionally towards the upper teeth relative to the telescopic sleeve. When the lower bite is subjected to pressure from the lower teeth, the locking plane engages with the adjustment groove to form a mechanical lock, thereby achieving adaptive locking support for the opening and closing angle.

[0013] Preferably, a spool is rotatably disposed inside the telescopic sleeve, and the spool is connected to the arc-shaped elastic block by a traction rope.

[0014] Preferably, the lower bite frames are symmetrically arranged, and a transverse pressure beam is provided between the two lower bite frames. A push block connected to the spool drive is slidably arranged on the side of the transverse pressure beam near the tongue. The push block is pushed by the tongue to drive the spool to rotate and take in the line, so that the traction rope pulls the arc-shaped elastic block to elastically contract and disengage from the adjustment groove to unlock the elastic support.

[0015] Preferably, the elastic support further includes a movable plate disposed on the support portion.

[0016] Preferably, the movable plate divides the interior of the telescopic sleeve into a first enclosed space near the lower bite and a second enclosed space near the upper bite.

[0017] Preferably, the bottom of the telescopic sleeve is provided with a saliva straw and an elastic balloon that is initially connected to the first sealed space. During the relative movement of the moving plate and the support part within the telescopic sleeve, the first sealed space is under negative pressure and the elastic balloon is evacuated, so that the elastic balloon contracts and deforms.

[0018] Preferably, a reversing mechanism is provided between the elastic balloon, the saliva suction tube, and the first sealed space. When the patient needs to clean saliva from the mouth, the reversing mechanism can be driven to connect the elastic balloon in the contracted state with the elastic balloon. The elastic balloon then returns to its original shape so that saliva can be drawn into the elastic balloon for collection through the saliva suction tube.

[0019] Preferably, the reversing mechanism includes an elastically configured elastic slider, a pull rope disposed on the elastic slider, and an L-shaped air passage opened within the elastic slider.

[0020] Preferably, the inner wall of the upper bite bracket is provided with an elastic airbag that communicates with the second sealed space. As the moving plate moves relative to the support within the telescopic sleeve, the internal pressure of the second sealed space increases and inflates the elastic airbag, so that the elastic airbag adapts to the change in opening and closing angle and adjusts its fit with the teeth.

[0021] Preferably, the inner wall of the underbite is provided with a silicone pad to protect the teeth.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] This invention utilizes elastic supports to ensure that the upper and lower jaw arches always maintain contact with the upper and lower teeth, achieving adaptive following. This effectively prevents the device from falling off and the support from failing due to the patient's unconscious mouth opening, significantly improving the safety and stability of the device during support. Furthermore, it eliminates the need for automatic adjustment by electronic components, resulting in a simple structure, low cost, and suitability as a disposable consumable. This avoids the psychological burden and cross-infection caused by repeated use. It also transforms the passive adjustment of the mouth opening angle by medical staff into active adjustment based on the patient's needs, eliminating the need for repeated adjustments by medical staff. In existing technologies, the patient must express their needs during adjustment. The inconvenience of speaking and communication with medical staff increases the difficulty of adjustment. The device only requires the patient to actively open the mouth to a comfortable angle and then relax to complete the angle adjustment, making the adjustment more convenient and quick. It does not require a complex structure for support, which can greatly expose the internal condition of the oral cavity, reduce obstruction, and facilitate medical staff to examine and operate on the oral cavity. Furthermore, the arc-shaped elastic block achieves guidance and mechanical locking, further fixing the opening and closing angle, effectively avoiding the fluctuation of the opening and closing angle during the support process caused by the inherent instability of the elastic part due to the elasticity of the elastic part alone. This improves the stability of the device during the support process. Attached Figure Description

[0024] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0025] Figure 1 This is a top perspective view of the present invention;

[0026] Figure 2 This is a bottom-view perspective view of the present invention;

[0027] Figure 3 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0028] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0029] Figure 5 For the present invention Figure 3 Enlarged view of point B;

[0030] Figure 6 This is a schematic diagram of the support unfolding front cross-sectional structure of the present invention;

[0031] Figure 7 For the present invention Figure 6 Enlarged view of point C;

[0032] Figure 8 This is a schematic diagram of the cross-sectional structure of the present invention;

[0033] Figure 9 For the present invention Figure 8 Enlarged diagram of point D.

[0034] The diagram shows the following components: 1. Lower bite frame; 2. Telescopic sleeve; 3. Upper bite frame; 4. Horizontal pressure beam; 5. Push block; 6. Saliva straw; 7. Elastic balloon; 8. Pull rope; 9. Elastic airbag cushion; 10. Unlocking rod; 11. Support column; 12. Adjustment groove; 13. Thread wheel; 14. Arc-shaped elastic block; 15. Moving plate; 16. First spring; 17. Fixing block; 18. Elastic slider; 19. L-shaped airway. Detailed Implementation

[0035] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0036] like Figure 1-9 As shown, an oral support and care device with an adjustable fixed opening and closing angle includes:

[0037] The lower bite guard 1 and upper bite guard 3 are respectively fitted onto the upper and lower teeth;

[0038] Telescopic sleeve 2 is installed at the top of the lower bite frame 1;

[0039] An elastic support member is provided between the bottom of the telescopic sleeve 2 and the upper bite 3. It includes a support part fixed to the bottom of the upper bite 3 and an elastic part that is in an elastically compressed state in the initial state. After the elastic part is released from the initial constraint, it pushes the upper bite 3 and the lower bite 1 to always keep in contact with the upper and lower teeth, so as to achieve adaptive following in the process of self-opening mouth.

[0040] An adjustment groove 12 is formed on the inner wall of the telescopic sleeve 2;

[0041] The arc-shaped elastic blocks 14 symmetrically arranged on the support part include an arc-shaped guide surface at the top and a locking plane at the bottom. The arc-shaped guide surface guides the support part to move unidirectionally towards the upper teeth relative to the telescopic sleeve 2. When the lower bite 1 is subjected to pressure from the lower teeth, the locking plane engages with the adjustment groove 12 to form a mechanical lock, so as to achieve adaptive locking support for the opening and closing angle.

[0042] Specifically, while existing technologies can adjust and support the opening angle of the mouth, once the angle is adjusted, the upper and lower supports only conform to the upper and lower teeth. However, with a fixed support angle, when the patient subconsciously opens their mouth slightly, the mandible actively opens and closes. Because the upper support has a fixed support angle, it moves with the mandible under the weight of the entire device, causing it to fail to actively cooperate with the movement of the upper teeth. This can lead to the upper teeth detaching from the support surface, resulting in support failure and a risk of impact. The solution is to use an arc-shaped elastic block 14 and an elastic support element to achieve adaptive following and locking support for the opening angle. Details are as follows:

[0043] In use, the device is placed in the patient's mouth. It supports the teeth by supporting the front sides of the upper and lower teeth. Because the front ends of the upper and lower teeth are curved, the lower bite block 1 and upper bite block 3 are designed as curved U-shaped sleeves, so that the lower bite block 1 and upper bite block 3 fit the alignment of the teeth more closely. Adjust the position of the lower bite block 1 and put it on the teeth on both sides of the lower teeth. Let the patient bite down, so that the upper bite block 3 is put on the corresponding teeth of the upper teeth. The lower bite block 1 and upper bite block 3 provide stable support points for the entire device. Remove the retaining plate. Figure 1 As shown, the baffle is slidably disposed on the surface of the telescopic sleeve 2 away from the tongue, and one end of the baffle is engaged with the support part of the elastic support member, so that the elastic part located between the support part and the bottom of the telescopic sleeve 2 is kept in an elastically compressed state and stores elastic potential energy. After the device is positioned in the patient's mouth, the baffle is pulled out, thereby releasing the initial constraint on the elastic part of the elastic support member.

[0044] Furthermore, after the elastic part of the elastic support is released from its initial constraint, the patient adjusts the opening and closing angle by opening their mouth voluntarily. During this process, the upper jaw remains stationary, while the lower jaw moves the lower teeth away from the upper teeth. Since the elastic part of the elastic support is released from its initial constraint and the upper teeth remain stationary, elastic potential energy is released during the recovery deformation process. The top of the elastic part of the elastic support remains fixed in position, while the bottom of the elastic part pushes the telescopic sleeve 2 to move the lower bite block 1 towards the lower teeth. This ensures that the lower bite block 1 remains in contact with the lower teeth under the action of the elastic part. Simultaneously, during the movement of the telescopic sleeve 2, the supporting part of the elastic support moves towards the upper teeth relative to the telescopic sleeve 2. This ensures that the upper bite block 3 remains in contact with the upper teeth, thus achieving adaptive following between the upper bite block 3 and the lower bite block 1. This effectively prevents the upper support from failing to actively cooperate with the movement of the upper teeth when the patient unconsciously opens their mouth slightly, which could lead to the upper teeth detaching from the support surface, causing support failure and the risk of impact. This further improves the support effect of the device and the stability and safety during the support process.

[0045] Furthermore, after the elastic part of the elastic support is released from constraint, the symmetrically arranged arc-shaped elastic blocks 14 on the support part of the elastic support move synchronously with the support part in the upward tooth direction within the telescopic sleeve 2. When the arc-shaped guide surface of the arc-shaped elastic block 14 contacts the upper edge of the adjustment groove 12 arrayed on the inner wall of the telescopic sleeve 2, due to the guiding effect of the curved surface of the arc-shaped guide surface, the arc-shaped elastic block 14 is pushed by the upper edge of the adjustment groove 12 and elastically contracts away from the adjustment groove 12, so that the arc-shaped elastic block 14 disengages from the adjustment groove 12 and moves with the moving end of the elastic support. When the arc-shaped elastic block 14 moves to the next adjustment slot 12 position, it restores its elastic deformation and engages with the next adjustment slot 12 when it corresponds to the next adjustment slot 12. When the arc-shaped elastic block 14 contacts the upper edge of the adjustment slot 12 again, it is elastically compressed again. This process repeats, so that the elastic support member moves smoothly towards the upper teeth within the telescopic sleeve 2 under the guidance of the arc-shaped guide surface of the arc-shaped elastic block 14 and the action of elastic potential energy. This ensures that the upper bite bracket 3 and the lower bite bracket 1 always keep in contact with the upper and lower teeth, achieving adaptive following.

[0046] Furthermore, when the patient opens their mouth to a satisfactory and comfortable opening angle, the mandibular muscles stop exerting force. Under the physiological contraction of the muscles, the mandible tends to move towards the upper jaw, thus applying pressure to the lower jawbone 1 through the lower teeth. At this time, the telescopic sleeve 2, under the action of the lower jawbone 1, tends to move towards the upper teeth relative to the support part of the elastic support. When the arc-shaped elastic block 14 moves relative to the support part within the telescopic sleeve 2 to correspond with the corresponding position adjustment groove 12, it restores its elastic deformation and engages with the pin of the corresponding position adjustment groove 12. At this time, the locking plane at the bottom of the arc-shaped elastic block 14 abuts against the bottom plane of the adjustment groove 12, forming a mechanical lock, thereby preventing the telescopic sleeve 2 from moving towards the upper teeth, thus preventing the mandible from retracting, thereby further locking the opening angle. This achieves adaptive locking support for the opening angle, effectively avoiding fluctuations in the opening angle during support due to the inherent instability of the elasticity of the elastic part, which is caused by the elastic support alone. Through mechanical locking, the opening angle is effectively locked further, improving the stability of the device during support.

[0047] In the aforementioned technology, the elastic support components ensure that the upper jawbone 3 and lower jawbone 1 always maintain contact with the upper and lower teeth, achieving adaptive following. This effectively prevents the device from falling off and the support from failing due to the patient's unconscious mouth opening, thus significantly improving the safety and stability of the device during the support process. Furthermore, it eliminates the need for automatic adjustment by electronic components, resulting in a simple structure, low cost, and suitability as a disposable consumable. This avoids the psychological burden and cross-infection caused by repeated use. Moreover, it transforms the passive adjustment of the opening angle by medical staff into active adjustment based on the patient's own needs, eliminating the need for repeated adjustments by medical staff. In existing technologies, during adjustment, the patient... The inconvenience of speaking and communication with medical staff increases the difficulty of adjustment. The device only requires the patient to actively open the mouth to a comfortable angle and then relax to complete the angle adjustment, making the adjustment more convenient and quick. It does not require a complex structure for support, which can greatly expose the internal condition of the oral cavity, reduce obstruction, and facilitate medical staff to examine and operate on the oral cavity. Furthermore, the arc-shaped elastic block 14 achieves guidance and mechanical locking, further fixing the opening and closing angle, effectively avoiding the fluctuation of the opening and closing angle during the support process caused by the inherent instability of the elastic part due to the elasticity of the elastic part alone, thus improving the stability of the device during the support process.

[0048] A spool 13 is rotatably mounted inside the telescopic sleeve 2, and the spool 13 is connected to the arc-shaped elastic block 14 by a traction rope.

[0049] Specifically, such as Figure 6 and Figure 7As shown, a spool 13 is rotatably mounted inside the bottom of the telescopic sleeve 2. The end of the traction rope is forked, and the forked ends are connected to two arc-shaped elastic blocks 14 respectively. When the support part of the elastic support moves relative to the teeth in the direction of the upward teeth inside the telescopic sleeve 2, the arc-shaped elastic blocks 14 pull the spool 13 to rotate and release the line through the traction rope. It should be noted that there is friction between the spool 13 and the inner wall of the telescopic sleeve 2 to prevent the spool from rotating, and the elastic force of the arc-shaped elastic blocks 14 is greater than the friction force between the spool 13 and the inner wall of the telescopic sleeve 2, so that the traction rope always remains taut when the arc-shaped elastic blocks 14 pull the spool 13 to rotate.

[0050] The lower bite frames 1 are symmetrically arranged, and a horizontal pressure beam 4 is provided between the two lower bite frames 1. A push block 5, which is connected to the spool 13, is slidably arranged on the side of the horizontal pressure beam 4 near the tongue. The push block 5 is pushed by the tongue to drive the spool 13 to rotate and take in the line, so that the traction rope pulls the arc-shaped elastic block 14 to elastically contract and disengage from the adjustment groove 12 to unlock the elastic support.

[0051] Specifically, such as Figure 8 As shown, when the opening and closing angle needs to be reduced during the support process, the patient pushes the push block 5, which is located near the tongue side of the transverse pressure beam 4, away from the tongue within the transverse pressure beam 4. The end of the push block 5 away from the tongue is triangular, including two symmetrical inclined surfaces. When the push block 5 moves, the tip of the triangular end inserts between two elastically symmetrically positioned unlocking rods 10 inside the transverse pressure beam 4. As the push block 5 moves, the end of the unlocking rod 10 that contacts the inclined surface of the push block 5 moves relative to the inclined surface, thereby causing the two unlocking rods 10 to move in opposite directions away from the push block 5 and compress the second spring. At this time, the other end of the unlocking rod 10 with teeth moves and engages with the spool 13, thereby causing the spool 13 to rotate in the opposite direction, so that the spool 13 can retract the traction rope. The operation involves pulling the arc-shaped elastic block 14 with a traction rope to elastically contract it, thereby disengaging the arc-shaped elastic block 14 from the adjustment groove 12 and releasing the lock on the elastic support. The patient can then contract the tongue to adjust the opening and closing angle to a suitable angle as needed. After releasing the tongue, the unlocking rod 10 resets under the action of the second spring's deformation and pushes the push block 5 back to its original position. The toothed end of the unlocking rod 10 further drives the thread wheel 13 to rotate and release the thread, thereby restoring the elastic deformation of the arc-shaped elastic block 14 and re-engaging it with the adjustment groove 12 for mechanical locking. This further completes the reduction of the opening and closing angle. No manual adjustment by medical staff is required; adjustment can be made solely through the tongue. This achieves both adaptive and bidirectional adjustment while ensuring adaptive following adjustment, further improving the adaptability of the device.

[0052] The elastic support also includes a movable plate 15 disposed on the support.

[0053] Specifically, such as Figure 6As shown, the support part of the elastic support is the support column 11, the elastic part is the first spring 16, and the moving plate 15 is fixedly installed at the bottom of the support column 11. The initial state of the first spring 16 is the elastic compression state. When the elastic compression state of the first spring 16 is released, the first spring 16 releases elastic potential energy and pushes the telescopic sleeve 2 to move, thereby causing the moving plate 15 to move relative to the telescopic sleeve 2.

[0054] The movable plate 15 divides the interior of the telescopic sleeve 2 into a first enclosed space near the lower bite 1 and a second enclosed space near the upper bite 3.

[0055] The bottom of the telescopic sleeve 2 is provided with a saliva straw 6 and an elastic balloon 7 that is initially connected to the first sealed space. As the moving plate 15 moves relative to the support part within the telescopic sleeve 2, the first sealed space is under negative pressure and the elastic balloon 7 is evacuated, causing the elastic balloon 7 to contract and deform.

[0056] Specifically, such as Figure 6 and Figure 8 As shown, during the relative movement of the movable plate 15 with the support column 11 towards the upper tooth direction within the telescopic sleeve 2, the volume of the first sealed space located near the lower tooth of the movable plate 15 increases. With the internal gas remaining unchanged, the first sealed space is under negative pressure. Thus, the gas inside the elastic balloon 7 is drawn into the first sealed space through the connecting pipe between the first sealed space and the elastic balloon 7, thereby causing the elastic balloon 7 to contract and deform.

[0057] A reversing mechanism is provided between the elastic balloon 7, the saliva suction tube 6, and the first sealed space. When the patient needs to clean the saliva in the mouth, the reversing mechanism can be driven to connect the elastic balloon 7 in the contracted state. The elastic balloon 7 then returns to its original shape so that the saliva can be drawn into the elastic balloon 7 through the saliva suction tube 6 for collection.

[0058] The reversing mechanism includes an elastic slider 18, a pull rope 8 disposed on the elastic slider 18, and an L-shaped air passage 19 opened in the elastic slider 18.

[0059] Specifically, a fixing block 17 is provided on the inner wall of the bottom of the telescopic sleeve 2 near the air port of the connecting tube. A cavity is provided inside the fixing block 17, and an elastic slider 18 is slidably mounted within the cavity. An L-shaped airway 19 on the elastic slider 18 has an air port at one end connected to the saliva suction tube 6, while the other end is blocked by the inner wall of the cavity. Because oral examinations and care take a long time, and patients cannot clearly communicate with doctors due to the device, saliva accumulates inside the mouth during prolonged periods of mouth opening. If the doctor cannot clean it in time... This can easily cause patients to choke on their saliva. When patients feel they have too much saliva, they can pull the rope 8 connected to the elastic slider 18, which will cause the elastic slider 18 to compress elastically within the cavity. This will cause the air port at the end of the L-shaped airway 19 that is blocked by the cavity wall to align with the air port of the connecting tube, thereby connecting the elastic balloon 7 with the saliva suction tube 6. Since the elastic balloon 7 needs to recover its elastic deformation, a negative pressure will be generated inside the elastic balloon 7 to suction the saliva, thus effectively preventing patients from choking on their saliva and further improving the safety of the device during use.

[0060] An elastic airbag 9 is provided on the inner wall of the upper bite 3 and is connected to the second sealed space. As the moving plate 15 moves relative to the support part in the telescopic sleeve 2, the pressure inside the second sealed space increases and inflates the elastic airbag 9 so that the elastic airbag 9 can adapt to the change of opening and closing angle and adjust its fit to the teeth.

[0061] Specifically, as the movable plate 15 moves relative to the support within the telescopic sleeve 2, the volume of the second sealed space is compressed, thereby increasing the air pressure within the second sealed space. The air is guided through the air inlet slot at the top of the movable plate 15, and the airflow is introduced into the elastic airbag 9 through the connecting air passage between the air inlet slot and the elastic airbag 9, causing the elastic airbag 9 to inflate. This results in the elastic airbags 9 located on both sides of the inner wall of the upper bite frame 3 and on the bottom inner wall inflating. Due to the change in the support angle, the elastic airbag 9 can adaptively change its shape to follow the change in the angle between the teeth and the inner wall of the upper bite frame 3, thereby better supporting the teeth and protecting the upper teeth.

[0062] The inner wall of the lower bite block 1 is equipped with a silicone pad to protect the lower teeth.

[0063] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An oral support and care device with an adjustable and fixed opening and closing angle, characterized in that, include: The lower and upper jaws are respectively fitted onto the upper and lower teeth; A telescopic sleeve is installed at the top of the lower bite frame; An elastic support member is provided between the bottom of the telescopic sleeve and the upper bite frame. It includes a support part fixed to the bottom of the upper bite frame and an elastic part that is in an elastically compressed state in the initial state. After the elastic part is released from the initial constraint, it pushes the upper bite frame and the lower bite frame to always keep in contact with the upper and lower teeth, so as to achieve adaptive following during the self-opening process. The array is formed by adjustment grooves on the inner wall of the telescopic sleeve; The symmetrically arranged arc-shaped elastic blocks on the support include an arc-shaped guide surface at the top and a locking plane at the bottom. The arc-shaped guide surface guides the support to move unidirectionally towards the upper teeth relative to the telescopic sleeve. When the lower bite is subjected to pressure from the lower teeth, the locking plane engages with the adjustment groove to form a mechanical lock, thereby achieving adaptive locking support for the opening and closing angle. A spool is rotatably mounted inside the telescopic sleeve, and the spool is connected to the arc-shaped elastic block by a traction rope. The lower bite frames are symmetrically arranged, and a transverse pressure beam is provided between the two lower bite frames. A push block connected to the spool drive is slidably arranged on the side of the transverse pressure beam near the tongue. The push block is pushed by the tongue to drive the spool to rotate and take in the line, so that the traction rope pulls the arc-shaped elastic block to elastically contract and disengage from the adjustment groove to unlock the elastic support. The elastic support also includes a movable plate disposed on the support portion.

2. The oral support and care device with an adjustable and fixed opening angle according to claim 1, characterized in that: The movable plate divides the interior of the telescopic sleeve into a first enclosed space near the lower bite and a second enclosed space near the upper bite.

3. The oral support and care device with an adjustable fixed opening and closing angle according to claim 2, characterized in that: The bottom of the telescopic sleeve is provided with a saliva straw and an elastic balloon that is initially connected to the first sealed space. As the moving plate moves relative to the support part within the telescopic sleeve, the first sealed space is under negative pressure and the elastic balloon is evacuated, causing the elastic balloon to contract and deform.

4. The oral support and care device with an adjustable and fixed opening angle according to claim 3, characterized in that: A reversing mechanism is provided between the elastic balloon, the saliva suction tube, and the first sealed space. When the patient needs to clean the saliva in the mouth, the reversing mechanism can be driven to connect the elastic balloon in the contracted state. The elastic balloon will then restore its deformation so that the saliva can be drawn into the elastic balloon for collection through the saliva suction tube.

5. An oral support and care device with an adjustable and fixed opening angle according to claim 4, characterized in that: The reversing mechanism includes an elastically set elastic slider, a pull rope set on the elastic slider, and an L-shaped air passage opened in the elastic slider.

6. An oral support and care device with an adjustable fixed opening and closing angle according to claim 2, characterized in that: The upper bite bracket has an elastic airbag on its inner wall that communicates with the second sealed space. As the moving plate moves relative to the support within the telescopic sleeve, the pressure inside the second sealed space increases and inflates the elastic airbag, so that the elastic airbag adapts to the change in opening and closing angle and adjusts its fit to the teeth.

7. An oral support and care device with an adjustable and fixed opening angle according to claim 1, characterized in that: The inner wall of the underbite is provided with a silicone pad to protect the teeth.

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