Oral cavity support
By designing the U-shaped tongue clamp with the adjustment structure and the oral stent of the base, the problems of instability, poor comfort and high customization costs of the existing stent are solved, and adaptability and occlusivity stability to the oral cavity of different patients are achieved, reducing the production cost.
Patent Information
- Application Number
- CN202521250178.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2035-06-18
AI Technical Summary
Existing oral stents have problems with occlusal stability, comfort, customization cost and versatility, especially in radiotherapy, it is difficult to ensure repetition and individual adaptability of upper and lower jaw and tongue positions.
A oral support including a U-shaped tongue clamp and a base is designed. The base is equipped with an adjustment structure. By adjusting the movement of the tongue clamp and the base, the height of the upper molar support and the distance of the base, it can adapt to the oral structure of different patients. It can also be matched with the molar bite through low-temperature thermoplastic plates, and the threaded connection and universal head connection structure are used to improve the adjustment accuracy and comfort.
It achieves good adaptability to the oral structure of different patients, improves the stability of occlusal support and the repetition of upper and lower jaw positions, reduces the production cost, and enhances the comfort of use and the stability of occlusal.
Smart Images
Figure CN223143985U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to an oral stent. Background Technique
[0002] Oral radiotherapy is an important part of the comprehensive treatment of head and neck malignancies, especially playing a key role in the treatment of tumors such as oral cancer and nasopharyngeal cancer; during radiotherapy, precise dose control and positioning are crucial for the treatment effect, and at the same time, it is necessary to protect the surrounding normal tissues to the greatest extent to reduce radiotherapy-induced complications such as oral mucositis, xerostomia, radiation caries, taste change, trismus, radiation osteonecrosis, etc.
[0003] Currently, in oral radiotherapy, in order to improve the accuracy and repeatability of treatment and reduce the damage to normal tissues, oral positioning stents are often used; these stents can fully restrict the movement of various parts of the oral cavity, making the adjacent tissues away from the physical displacement of the tumor, which is a simple and effective method to reduce oral adverse reactions caused by radiotherapy.
[0004] However, in clinical applications, for head and neck radiotherapy positioning, relatively simple radiotherapy mouthpieces such as opening the mouth and holding a bottle, tongue depressors, etc. are mostly used as oral stents. When using them, it is difficult to ensure the repeatability of the positions of the upper and lower jaws and the tongue, with poor comfort, unstable occlusion, and inability to achieve individuation; as described in the Chinese patent with the patent number "CN116020059", the oral stent customized by collecting an oral model through corresponding equipment, although it has good comfort and occlusion stability, has a long production cycle, high cost, and lacks universality. Content of the Utility Model
[0005] The utility model discloses an oral stent to solve the problems of unstable occlusion, poor comfort, high customization cost, long cycle, and poor universality existing in current oral stents.
[0006] To solve the above problems, the utility model adopts the following technical solutions:
[0007] An oral stent, which includes a tongue hoop with a U-shaped structure. Both ends of the tongue hoop are respectively provided with bases, and the top surface and the bottom surface of the base are respectively provided with upper molar supports and lower molar supports; first adjustment structures are arranged at the connection ends of the tongue hoop and the bases for adjusting the front-back movement of the bases; the upper molar support or the lower molar support is respectively connected to the base through an upper bracket and a lower bracket, and the upper bracket is provided with a second adjustment structure for adjusting the height of the upper molar support; the tongue hoop includes an L-shaped left part and a right part, and the horizontal parts of the left part and the right part are connected through a third adjustment structure for adjusting the distance between the two bases.
[0008] Optionally, the top surface of the upper molar support and the bottom surface of the lower molar support are both provided with through grooves extending along the length direction, and the through grooves are embedded with low-temperature thermoplastic plates.
[0009] Optionally, the connection ends of the upper bracket and the upper molar support, and the connection ends of the lower bracket and the lower molar support are both set as universal joint connection structures.
[0010] Optionally, the first adjustment structure includes a first sleeve provided with internal threads; the front section of the base and the free section of the tongue brace are both set as screw structures adapted to the first sleeve, and the thread directions of the front section of the base and the free section of the tongue brace are opposite; the first sleeve is sleeved on the front section of the base and the free section of the tongue brace through a threaded structure, and the forward and reverse rotations of the first sleeve are used to control the forward and backward movements of the base.
[0011] Optionally, an auxiliary tongue brace that bends upward and arches is further provided between the two bases, and the two ends of the auxiliary tongue brace are respectively fixedly connected to the two bases, and the auxiliary tongue brace is a structural member made of medical rubber or silica gel.
[0012] Optionally, the interiors of the two bases are set as hollow chamber structures, and the front section of the base is provided with an opening communicating with the chamber structure; the tongue brace and the auxiliary tongue brace are both set as hollow tubular structures, and the tongue brace is provided with a liquid inlet and a liquid outlet; the lumen of the tongue brace communicates with the hollow chambers of the two bases respectively through the free section of the tongue brace, the second sleeve and the front section of the base, and the hollow chambers of the two bases communicate through the lumen of the auxiliary tongue brace, and the liquid inlet and the liquid outlet are used for the circulating flow of the coolant.
[0013] Optionally, the inner side surfaces of the two bases are both set as heat dissipation fin structures.
[0014] Optionally, the upper bracket includes a first screw, a second sleeve and a second screw; the first screw and the second screw are respectively arranged on the base and the upper molar support, and the thread directions of the first screw and the second screw are opposite; the second sleeve is provided with internal threads and is sleeved on the first screw and the second screw through a threaded structure, and the forward and reverse rotations of the second sleeve are used to control the upward and downward movements of the upper molar support.
[0015] Optionally, the third adjusting structure includes a third sleeve provided with internal threads; external threads adapted to the third sleeve are provided on the horizontal portions of the left and right parts of the tongue hoop, and the external thread directions of the horizontal portions of the left and right parts are opposite; the third sleeve is sleeved on the horizontal portions of the left and right parts through a threaded structure, and the relative and opposite movement of the left and right parts is controlled by the forward and reverse rotation of the third sleeve.
[0016] Optionally, the edges and corners of the base, the upper molar support and the lower molar support are all rounded corner structures.
[0017] The technical solution adopted by the present utility model can achieve the following beneficial effects:
[0018] The oral stent disclosed by the present utility model adjusts the widths of the left and right parts of the tongue hoop through the third adjusting structure, and then adaptively adjusts the distance between the two supports, so that it is applicable to patients with different oral widths, and the corresponding first adjusting structure is used to respectively and adaptively move the two bases forward or backward, so that the upper and lower molar supports on the left and right sides are adapted to the positions of the left and right molars in the patient's oral cavity; at the same time, the height of the upper molar support is adjusted through the second adjusting structure arranged on the upper stent, so as to better adapt to the patient's limited opening while meeting the radiotherapy opening requirements; therefore, the oral stent disclosed by the present utility model can be well applicable to different oral structures of patients, and has good versatility; while ensuring the comfort of the patient during use, it effectively improves the stability of the occlusal support and ensures the position repeatability of the upper and lower jaws; compared with the customized oral stent, the manufacturing cost is significantly reduced. Description of the Drawings
[0019] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0020] Figure 1 It is a schematic structural diagram of the oral stent disclosed in Embodiment 1 of the present utility model;
[0021] Figure 2 It is a front view of the oral stent disclosed in Embodiment 1 of the present utility model;
[0022] Figure 3 It is a schematic structural diagram of the connection end of the upper stent and the upper molar support disclosed in Embodiment 1 of the present utility model;
[0023] Figure 4 It is a rear view of the oral stent disclosed in Embodiment 2 of the present utility model;
[0024] Figure 5 This is the top view of the oral stent disclosed in Embodiment 2 of the present utility model;
[0025] Explanation of reference numerals:
[0026] Tongue retainer, 101 - left part, 102 - right part, 103 - third sleeve, 104 - liquid inlet, 105 - liquid outlet, 110 - first sleeve, 200 - base, 201 - auxiliary tongue retainer, 210 - upper molar support, 211 - first screw, 212 - second screw, 213 - second sleeve, 220 - lower molar support, 221 - lower bracket, 230 - low-temperature thermoplastic sheet. Detailed implementation manners
[0027] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0028] The technical solutions disclosed in each embodiment of the present utility model will be described in detail below in conjunction with the drawings.
[0029] Embodiment 1
[0030] Please refer to Figures 1 to 3 As shown, the present utility model discloses an oral stent. The disclosed oral stent includes a U-shaped tongue retainer 100. The two ends of the tongue retainer 100 are respectively provided with bases 200, and the top surface and the bottom surface of the base 200 are respectively provided with an upper molar support 210 and a lower molar support 220. First adjustment structures are provided at the connection ends of the tongue retainer 100 and the base 200 for adjusting the front-back movement of the base 200. The upper molar support 210 or the lower molar support 220 is respectively connected to the base 200 through an upper bracket and a lower bracket 221, and the upper bracket is provided with a second adjustment structure for adjusting the height of the upper molar support 210. The tongue retainer 100 includes an L-shaped left part 101 and a right part 102, and the horizontal parts of the left part 101 and the right part 102 are connected through a third adjustment structure for adjusting the distance between the two bases 200.
[0031] Among them, the width of the left part 101 and the right part 102 of the tongue brace 100 is adjusted by the third adjustment structure, and then the distance between the two bases 200 is adaptively adjusted to be applicable to patients with different oral widths. And the two bases 200 are respectively and adaptively moved forward or backward by the corresponding first adjustment structure, so that the upper molar supports 210 and the lower molar supports 220 on the left and right sides are adapted to the positions of the left and right molars of the patient's oral cavity. At the same time, the height of the upper molar support 210 is adjusted by the second adjustment structure arranged on the upper bracket, so as to better adapt to the patient's limited mouth opening while meeting the radiotherapy mouth opening requirements.
[0032] Therefore, the oral stent disclosed in this embodiment can be well applicable to different oral structures of patients and has good versatility. And, by adjusting the positions of the upper molar supports 210 and the lower molar supports 220 on the left and right sides, the oral stent can also be well adapted to the molar positions on the left and right sides of the patient's oral cavity. While ensuring the comfort of the patient during use, it effectively improves the stability of the occlusal support and ensures the position repeatability of the upper and lower jaws. At the same time, compared with the customized oral stent, the manufacturing cost is significantly reduced.
[0033] It is easy to understand that through grooves extending along the length direction can be arranged on the top surface of the upper molar support 210 and the bottom surface of the lower molar support 220, and a low-temperature thermoplastic plate 230 is embedded in the through grooves. During use, the oral stent can be placed in hot water at 60 - 70 °C. After the low-temperature thermoplastic plate 230 is softened, the oral stent is placed in the patient's oral cavity. By the patient's molar occlusion, the low-temperature thermoplastic plate 230 forms a bite mark adapted to the occlusal tooth surface of the molars, thereby improving its matching degree with the patient's molars and further improving the stability of the occlusal support and the position repeatability of the upper and lower jaws.
[0034] At the same time, the connection ends of the upper bracket and the upper molar support 210, and the connection ends of the lower bracket 221 and the lower molar support 220 can both be set as universal joint connection structures, as can be seen in Figure 3 shown; in this way, through the universal joint connection mechanism, the upper molar support 210 and the lower molar support 220 are adaptively rotated, so as to better ensure that their angles are adapted to the occlusal surface of the patient's molars.
[0035] As an implementable manner of the first adjustment structure, as Figure 1 shown, the first adjustment structure includes a first sleeve 110, and the first sleeve 110 is provided with internal threads. The front section of the base 200 and the free section of the tongue brace 100 are both set as screw structures adapted to the first sleeve 110, and the thread directions of the front section of the base 200 and the free section of the tongue brace 100 are opposite. The first sleeve 110 is sleeved on the front section of the base 200 and the free section of the tongue brace 100 through the thread structure, and the forward and backward movement of the base 200 is controlled by the forward and reverse rotation of the first sleeve 110.
[0036] As an implementable manner of the second adjustment structure, as Figure 2 shown, the upper bracket includes a first screw 211, a second sleeve 213 and a second screw 212; the first screw 211 and the second screw 212 are respectively arranged on the base 200 and the upper molar support 210, and the thread directions of the first screw 211 and the second screw 212 are opposite; the second sleeve 213 is provided with internal threads and is sleeved on the first screw 211 and the second screw 212 through a threaded structure, and the rising and falling movements of the upper molar support 210 are controlled by the forward and reverse rotations of the second sleeve 213.
[0037] As an implementable manner of the third adjustment structure, as Figure 2 shown, the third adjustment structure includes a third sleeve 103, and the third sleeve 103 is provided with internal threads; the horizontal parts of the left part 101 and the right part 102 of the tongue brace 100 are both provided with external threads adapted to the third sleeve 103, and the external thread directions of the horizontal parts of the left part 101 and the right part 102 are opposite; the third sleeve 103 is sleeved on the horizontal parts of the left part 101 and the right part 102 through a threaded structure, and the relative and opposite movements of the left part 101 and the right part 102 are controlled by the forward and reverse rotations of the third sleeve 103.
[0038] The threaded adjustment structure arranged outside the above-mentioned sleeve has higher adjustment accuracy compared with the existing gear sliding adjustment method, and can be better applied to the application environment of an oral stent that needs to be placed in the patient's oral cavity to adapt to the position of the molar teeth; moreover, the threaded structure arranged outside the sleeve also facilitates the medical staff to rotate the sleeve to move and adjust the corresponding components and ensure the adjustment stroke of each component to be adjusted.
[0039] It should be noted that in this embodiment, the edges and corners of the base 200, the upper molar support 210 and the lower molar support 220 are all rounded corner structures, so as to avoid the edge and corner structures from damaging the patient's oral cavity during the process of implanting the oral stent into the patient's oral cavity; among them, as Figure 2 and Figure 5 shown, the tongue brace 100 is usually designed in a U-shaped structure with a slightly narrower horizontal part and a slightly wider free end, so that it is similar to the contour of the oral dental arch.
[0040] Embodiment 2
[0041] This embodiment improves the oral stent disclosed in Embodiment 1, as Figure 4 and Figure 5As shown, an auxiliary tongue hoop 201 that bends upward and arches can be arranged between two bases 200. Both ends of the auxiliary tongue hoop 201 are fixedly connected to the two bases 200 respectively. Thus, after the oral stent is implanted into the patient's oral cavity, the tongue hoop 100 can press the front part of the tongue, and the auxiliary tongue hoop 201 can press the rear part of the tongue, thereby achieving a better fixing effect on the patient's tongue. And it should be noted that the auxiliary tongue hoop 201 is a structural member made of medical rubber or silica gel, which has a certain flexibility, thereby avoiding affecting the movement adjustment of the base 200 due to the use of rigid materials.
[0042] In the oral stent disclosed in this embodiment, it is easy to understand that the interiors of the two bases 200 can be set as hollow chamber structures, and an opening communicating with the chamber structure is provided at the front section of the base 200; both the tongue hoop 100 and the auxiliary tongue hoop 201 are set as hollow tubular structures, and the tongue hoop 100 is provided with a liquid inlet 104 and a liquid outlet 105; the lumen of the tongue hoop 100 is communicated with the hollow chambers of the two bases 200 respectively through the free section of the tongue hoop 100, the second sleeve 213 and the front section of the base 200, and the hollow chambers of the two bases 200 are communicated through the lumen of the auxiliary tongue hoop 201, and are used for the circulating flow of the cooling liquid through the liquid inlet 104 and the liquid outlet 105.
[0043] During radiotherapy, the externally connected cooling liquid enters the lumen of the tongue hoop 100 through the liquid inlet 104, and sequentially passes through a free end of the tongue hoop 100, one side sleeve and the front section of one side base 200 along the lumen of the tongue hoop 100 to enter the chamber of one side base 200, then enters the lumen of the other side base 200 through the lumen of the auxiliary tongue hoop 201 from the chamber of one side base 200, and sequentially flows out from the liquid outlet 105 along the front section of the other side base 200, the other side sleeve and the other free end of the tongue hoop 100 to realize the cooling cycle.
[0044] Based on the structural design, the refrigeration cycle of the oral cavity is realized, so that the oral temperature can be effectively reduced during radiotherapy to protect the oral tissues, reduce the inflammatory reaction and the incidence of mucositis and other clinical reactions; it is easy to understand that the liquid inlet 104 and the liquid outlet 105 are preferably arranged on the left part 101 and the right part 102 of the tongue hoop 100 respectively, and are located on the front side facing the outside of the oral cavity, so as to reduce the occlusion of the refrigeration design on the opening of the oral cavity; at the same time, the inner sides of the two bases 200, that is, the opposite sides of the two bases 200, are both set as heat dissipation fin structures, so as to increase the heat exchange area and better improve the temperature reduction effect of the oral stent in the oral cavity.
[0045] In the above embodiments of the present utility model, the differences between the various embodiments are mainly described. As long as the different optimized features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the writing, it will not be elaborated here.
[0046] The above are only embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.
Claims
1. An oral stent, characterized in that, It includes a tongue brace with a U-shaped structure. At both ends of the tongue brace, there are respectively provided bases, and on the top surface and the bottom surface of each base, there are respectively provided upper molar supports and lower molar supports; at the connection ends of the tongue brace and the bases, there are respectively provided first adjustment structures for adjusting the forward and backward movement of the bases; the upper molar supports or the lower molar supports are respectively connected to the bases through upper brackets and lower brackets, and the upper brackets are provided with second adjustment structures for adjusting the height of the upper molar supports; the tongue brace includes a left side part and a right side part in an L shape, and the transverse parts of the left side part and the right side part are connected through a third adjustment structure for adjusting the distance between the two bases.
2. The oral stent according to claim 1, wherein On the top surface of the upper molar support and the bottom surface of the lower molar support, there are respectively provided through grooves extending along the length direction, and the through grooves are embedded with low-temperature thermoplastic plates.
3. The oral stent according to claim 1 or 2, characterized in that, The connection ends of the upper brackets and the upper molar supports, and the connection ends of the lower brackets and the lower molar supports are both set as universal joint connection structures.
4. The oral stent according to claim 3, wherein, The first adjustment structure includes a first sleeve provided with internal threads; the front section of the base and the free section of the tongue brace are both set as screw structures adapted to the first sleeve, and the thread directions of the front section of the base and the free section of the tongue brace are opposite; the first sleeve is sleeved on the front section of the base and the free section of the tongue brace through a threaded structure, and the forward and backward movement of the base is controlled by the forward and reverse rotation of the first sleeve.
5. The oral stent according to claim 4, wherein Between the two bases, there is also provided an auxiliary tongue brace that bends upwards in an arch shape. The two ends of the auxiliary tongue brace are respectively fixedly connected to the two bases, and the auxiliary tongue brace is a structural member made of medical rubber or silica gel.
6. The oral stent according to claim 5, wherein The interiors of the two bases are set as hollow chamber structures, and the front section of the base is provided with an opening communicating with the chamber structure; the tongue brace and the auxiliary tongue brace are both set as hollow tubular structures, and the tongue brace is provided with a liquid inlet and a liquid outlet; the lumen of the tongue brace is communicated with the hollow chambers of the two bases respectively through the free section of the tongue brace, the first sleeve and the front section of the base, the hollow chambers of the two bases are communicated through the lumen of the auxiliary tongue brace, and the liquid inlet and the liquid outlet are used for the circulating flow of the coolant.
7. The oral stent according to claim 6, wherein The inner side surfaces of the two bases are both set as heat dissipation fin structures.
8. The oral stent according to claim 3, wherein The upper bracket includes a first screw, a second sleeve and a second screw; the first screw and the second screw are respectively arranged on the base and the upper molar support, and the thread directions of the first screw and the second screw are opposite; the second sleeve is provided with internal threads and is sleeved on the first screw and the second screw through a threaded structure, and the upward and downward movement of the upper molar support is controlled by the forward and reverse rotation of the second sleeve.
9. The oral stent according to claim 3, wherein The third adjustment structure includes a third sleeve provided with internal threads; external threads adapted to the third sleeve are provided on the horizontal portions of the left and right parts of the tongue hoop, and the external thread directions of the horizontal portions of the left and right parts are opposite; the third sleeve is sleeved on the horizontal portions of the left and right parts through a threaded structure, and the relative and opposite movements of the left and right parts are controlled by the forward and reverse rotations of the third sleeve.
10. The oral stent according to claim 1 or 2, characterized in that, The edges and corners of the base, the upper molar support and the lower molar support are all chamfered structures.