Multifunctional individualized buccal device for radiotherapy of head and neck tumors
By designing a multifunctional personalized mouthpiece, the problems of target area obstruction and insufficient radiation accuracy in radiotherapy of head and neck tumors are solved, and personalized adaptation and comfort improvement are achieved.
Patent Information
- Application Number
- CN202511208045.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2025-10-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing head and neck tumor radiotherapy devices are difficult to achieve individualized adaptation, resulting in target area obstruction and insufficient radiation accuracy, affecting the treatment effect.
A multifunctional individualized mouthpiece is designed to adapt to the oral structure of different patients through adjustable upper and lower bite plates and rotating cheek plate structures, ensuring target area exposure and accurate radiation coverage.
It achieves individualized adaptation, reduces target area obstruction, improves radiation accuracy and treatment effect, and enhances patient comfort and treatment stability.
Smart Images
Figure CN120754461A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of medical devices, and in particular relates to a multifunctional individualized mouthpiece for radiotherapy of head and neck tumors. Background Art
[0002] Radiotherapy for head and neck tumors, such as nasopharyngeal carcinoma, tongue cancer, and laryngeal cancer, places extremely high demands on precise targeting and normal tissue protection. During radiotherapy, while the radiation kills tumor cells, it can also damage key organs such as the parotid gland, spinal cord, and brainstem, leading to complications such as xerostomia, mucosal ulcers, and dysphagia. Therefore, devices such as thermoplastic masks and head frames are required to restrict head movement. Meanwhile, mouthpieces are used to open the mouth and stabilize the tongue or cheeks to achieve target isolation and stable positioning. In existing technologies, simple radiotherapy mouthpieces such as open-mouth bottles, corks, tongue depressors, and syringes are commonly used in clinical practice. However, these devices cannot ensure the repeatability of the upper and lower jaw and tongue positions, are uncomfortable, and cannot be personalized. Furthermore, existing devices cannot effectively open the cheeks and address the problem of cheek soft tissue blocking the tumor target area. Therefore, in response to the above-mentioned existing technical problems, this solution proposes a multifunctional individualized mouthpiece for radiotherapy of head and neck tumors. Summary of the Invention
[0003] In order to solve the above-mentioned problems in the prior art, the present invention designs a multifunctional personalized mouthpiece for head and neck tumor radiotherapy. The upper and lower bite plates are provided separately, and the distance between them is adjusted to open the patient's mouth. The cheek plates are rotatably provided on both sides, and the cheek plates can be adjusted and rotated as needed to support and fix the cheeks on both sides. In order to achieve the above technical effects, the present invention is implemented through the following technical solutions: a multifunctional individualized mouthpiece for head and neck tumor radiotherapy, comprising: a base plate, a lower bite plate, and an upper bite plate; A lower bite plate is provided at the upper end of the bottom plate; the front end of the lower bite plate is slidably connected to the upper bite plate; The arc-shaped frames are symmetrically arranged on both sides of the bottom plate; the front ends of the arc-shaped frames on both sides are provided with lifting grooves for sliding connection with the lower bite plate; the rear end of the lifting groove on one side is provided with a limiting sliding groove for sliding connection with the slider; Slide sleeves are symmetrically arranged on both sides of the lower bite plate and are slidably connected to the upper bite plate. A swivel seat is arranged on the inner side of the slide sleeve, and a lifting column is arranged on the outer side and is slidably connected to the lifting slot. The swivel seat is fixedly connected to the rotating shaft. The rotating shaft is movably connected to the cheek plate. Slide rods are symmetrically arranged on both sides of the lower bite plate to be slidably connected to the sliding sleeves; a hole is provided in the middle of the slide rod on one side to be threadedly connected to the expansion screw; the front end of the expansion screw is rotatably connected to the sliding sleeve, and the rear end is provided with an expansion knob; Furthermore, the lower bite plate and the upper bite plate are both configured as arc-shaped plates, and the lower ends of both are provided with bite grooves; the upper ends of the bite grooves are provided with abutment plates; Furthermore, a tongue depressor is provided at the lower end of the lower bite plate; Furthermore, the length and width of the abutment plate are both greater than the bite groove; Furthermore, the lower end of the cheek plate is configured as an ellipse, the upper end is configured as a rectangular plate, a hole is provided in the middle portion to connect to the rotating shaft, and a hole is provided in the middle portion of the upper end to be threadedly connected to the cheek screw; the front end of the cheek screw abuts against the sliding sleeve, and the rear end is provided with a cheek knob; Furthermore, the cheek plate is rotatably connected to the rotating shaft and has a width smaller than the rotating shaft, and can slide on the rotating shaft to adapt to different oral structures; Furthermore, a plurality of limiting columns are arranged in an array at the front end of the slider, a spring is arranged at the rear end, and a push plate is vertically arranged on the upper part of the rear end; the spring is fixedly connected to the rear end of the limiting slide groove; Furthermore, a plurality of limiting grooves movably connected to the limiting columns are arranged in an array outside the lifting column close to the limiting sliding groove.
[0004] The beneficial effects of the present invention are: The present invention adopts a sliding connection setting between the lower bite plate and the upper bite plate, and the spacing between the upper and lower bite plates can be adjusted by manually rotating the expansion knob to adapt to the mouth opening requirements of different patients. This solves the problem that the traditional fixed structure cannot be adapted individually, avoids the target area being blocked due to insufficient mouth opening, and ensures that the radiation accurately covers the target area. At the same time, the cheek plate is connected to the rotating base via a rotating shaft and can be rotated around the rotating shaft to fix the cheek plate to the cheek. The adjustable cheek plate can support and fix the cheeks on both sides as needed, stretching the cheek soft tissue to the sides, so that the tumor target area is better exposed to the radiation field, reducing the obstruction of the cheek soft tissue to the tumor target area, which is conducive to more accurate irradiation of the tumor site and improving the local control rate of the tumor. Finally, the lower bite plate and the upper bite plate are both configured as arc-shaped plates, and a bite groove is provided on the outside of the lower end, and an abutment plate is provided on the upper end of the bite groove. The length and width of the abutment plate are both larger than the bite groove, which can better fit the shape of the patient's upper and lower jaws, making the patient more comfortable and stable when biting. At the same time, it can be individualized according to the oral anatomical structure of different patients to ensure the repeatability of the upper and lower jaws and tongue positions. BRIEF DESCRIPTION OF THE DRAWINGS
[0005] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.
[0006] Figure 1 This is a schematic diagram of the overall structure of a multifunctional individualized mouthpiece for radiotherapy of head and neck tumors; Figure 2It is a lifting groove structure schematic diagram of a multifunctional individualized mouth holder for head and neck tumor radiotherapy; Figure 3 It is a lower bite plate structure schematic diagram of a multifunctional individualized mouth holder for head and neck tumor radiotherapy; Figure 4 It is an upper bite plate structure schematic diagram of a multifunctional individualized mouth holder for head and neck tumor radiotherapy; Figure 5 It is a cheek plate structure schematic diagram of a multifunctional individualized mouth holder for head and neck tumor radiotherapy; Figure 6 It is a slider structure schematic diagram of a multifunctional individualized mouth holder for head and neck tumor radiotherapy; Figure 7 It is a front view sectional view of a multifunctional individualized mouth holder for head and neck tumor radiotherapy; Figure 8 It is a local structure schematic diagram A of a multifunctional individualized mouth holder for head and neck tumor radiotherapy; In the drawings, the component list represented by each reference numeral is as follows: 1-bottom plate, 2-arc-shaped frame, 3-lower bite plate, 4-upper bite plate, 5-lifting groove, 6-limiting sliding groove, 7-lifting column, 8-sliding sleeve, 9-rotation shaft, 10-rotation seat, 11-tongue plate, 12-abutment plate, 13-sliding rod, 14-expanding screw rod, 15-expanding knob, 16-bite slot, 17-cheek plate, 18-cheek screw rod, 19-cheek knob, 20-slider, 21-limiting column, 22-spring, 23-limiting groove, 24-push plate. DETAILED DESCRIPTION
[0007] The application discloses a multifunctional individualized mouth holder for head and neck tumor radiotherapy, which comprises a bottom plate 1, a lower bite plate 3 and an upper bite plate 4. The bottom plate 1 is provided with the lower bite plate 3 at the upper end; the lower bite plate 3 is slidably connected with the upper bite plate 4 at the front end. The bottom plate 1 is provided with arc-shaped frames 2 symmetrically arranged at both sides; the arc-shaped frames 2 are provided with lifting grooves 5 slidably connected with the lower bite plate 3 at the front ends of both sides; the lifting groove 5 is provided with a limiting sliding groove 6 slidably connected with a slider 20 at the rear end of one side. The lower bite plate 3 is provided with sliding sleeves 8 slidably connected with the upper bite plate 4 symmetrically arranged at both sides; the sliding sleeve 8 is provided with a rotation seat 10 at the inner side and a lifting column 7 slidably connected with the lifting groove 5 at the outer side; the rotation seat 10 is fixedly connected with a rotation shaft 9; the rotation shaft 9 is movably connected with a cheek plate 17. Slide rods 13 are symmetrically arranged on both sides of the lower bite plate 3 to be slidably connected to the slide sleeve 8; a hole is opened in the middle of the slide rod 13 on one side to be threadedly connected to the expansion screw 14; the front end of the expansion screw 14 is rotated to connect to the slide sleeve 8, and the rear end is provided with an expansion knob 15; the adjustable cheek plate 17 can support and fix the cheeks on both sides according to needs, and expand the cheek soft tissue to both sides.
[0008] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0009] Example 1 like Figure 1-8 As shown, a lower bite plate 3 is provided on the upper end of the bottom plate 1; the front end of the lower bite plate 3 is slidably connected to the upper bite plate 4; The bottom plate 1 is symmetrically provided with arc-shaped frames 2 on both sides; the front ends of the arc-shaped frames 2 on both sides are provided with lifting grooves 5 for sliding connection with the lower bite plate 3; the rear end of the lifting groove 5 on one side is provided with a limiting sliding groove 6 for sliding connection with the slider 20; The base plate 1 is made of medical-grade polycarbonate in one piece, and the bottom is designed with anti-slip texture to ensure stability when placed on the radiotherapy bed; slots are provided on both sides of the front end for detachable connection to the arc frame 2, which is convenient for disinfection and replacement; The curved frame 2 is made of carbon fiber reinforced resin, which has high strength and low radiation attenuation. The curved surface design fits the patient's mandibular contour. Slide sleeves 8 are symmetrically arranged on both sides of the lower bite plate 3 and are slidably connected to the upper bite plate 4. A swivel seat 10 is arranged inside the swivel sleeve 8, and a lifting column 7 is arranged outside the swivel sleeve 8 and is slidably connected to the lifting slot 5. The swivel seat 10 is fixedly connected to the rotating shaft 9; the rotating shaft 9 is movably connected to the cheek plate 17. Slide rods 13 are symmetrically arranged on both sides of the lower bite plate 3 to be slidably connected to the slide sleeve 8; a hole is provided in the middle of one side of the slide rod 13 to be threadedly connected to the expansion screw 14; the front end of the expansion screw 14 is rotatably connected to the slide sleeve 8, and the rear end is provided with an expansion knob 15; Furthermore, the lower bite plate 3 and the upper bite plate 4 are both configured as arc-shaped plates that conform to the shape of the dental arch, and a bite groove 16 is provided on the outer portion of the lower end of both; an abutment plate 12 is provided on the upper end of the bite groove 16; In this embodiment, a silicone pad is provided on the inner surface of the bite groove 16 to improve the comfort of the bite; Furthermore, a tongue depressor 11 is provided at the lower end of the lower bite plate 3; the tongue depressor is provided with a detachable connection, so that the tongue depressor 11 of different sizes can be replaced according to the patient; and its surface is covered with a silicone pad; Furthermore, the abutment plate 12 is larger in length and width than the bite groove 16 , distributing the pressure to the gums and alveolar bone; Furthermore, the cheek plate 17 is configured as an elliptical plate at the lower end and a rectangular plate at the upper end. A hole is provided in the middle portion to connect to the rotating shaft 9. A hole is provided in the middle portion of the upper end to be threadedly connected to the cheek screw 18. The front end of the cheek screw 18 abuts against the sliding sleeve 8, and a cheek knob 19 is provided at the rear end. Furthermore, the cheek plate 17 is rotatably connected to the rotating shaft 9 and is smaller in width than the rotating shaft 9, and can slide on the rotating shaft 9 to adapt to different oral structures; the cheek plate 17 can be slid forward or rightward according to the oral structure to be fixed in a suitable position; In this embodiment, the cheek plates 17 on both sides can be adjusted in position and rotation respectively, thereby satisfying the structural fixation of different left and right positions; at the same time, in this solution, no limiting structure is set for the left and right sliding of the cheek plates 17. After sliding to the appropriate position, the cheek screw 18 is driven to rotate by rotating the cheek knob 19, so that the front end of the cheek screw 18 abuts against the inner side of the sliding sleeve 8, thereby causing the front end elliptical part of the cheek plate 17 to rotate outward to fix the cheek. After the fixation is completed, the cheek plate 17 can be prevented from sliding left and right by the limit of the cheek, so there is no need to set a limiting structure for it. Furthermore, the front end of the slider 20 is provided with a plurality of limiting columns 21, the rear end is provided with a spring 22, and the upper portion of the rear end is vertically provided with a push plate 24; the spring 22 is fixedly connected to the rear end of the limiting slide 6; Furthermore, a plurality of limiting grooves 23 are arranged in an array on the outer side of the lifting column 7 near the limiting slide groove 6 and movably connected to the limiting column 21; In this embodiment, the working principle of the device is as follows: the bottom plate 1 serves as a support, and by rotating and expanding the screw 14, the sliding sleeve 8 is driven to move back and forth along the sliding rod 13, thereby adjusting the spacing between the upper and lower bite plates 3 and realizing dynamic adjustment of the opening degree. The arc-shaped frames 2 on both sides are slidably connected with the lifting columns 7 of the lower bite plate 3 through the lifting grooves 5. Pushing the push plate 24 can compress the spring 22 so that the slider 20 drives the limiting column 21 to disengage from the limiting groove 23 of the lifting column 7, thereby adjusting the vertical height of the lower bite plate 3. After releasing the push plate 24, the spring 22 is reset, and the limiting column 21 is locked in the limiting groove 23 to achieve height locking. The cheek plate 17 is rotatably connected to the rotating seat 10 on both sides of the lower bite plate 3 through the rotating shaft 9. The rotating cheek screw 18 can push the cheek plate 17 to rotate around the rotating shaft 9 to adjust the opening angle and force of the cheeks on both sides; at the same time, the cheek plate 17 can slide axially along the rotating shaft 9 to adapt to different oral widths. The tongue depressor 11 in the middle of the lower bite plate 3 is used to press down the tongue to expose the tumor target area, and the abutment plate 12 above the bite groove 16 disperses the occlusal pressure to improve patient comfort.
[0010] Example 2 The embodiment provides a preferred embodiment of the lifting column 7, in the embodiment, the lifting column 7 is detachably connected with the sliding sleeve 8, in the prior art, a conventional fixing mode is that a high-temperature plastic face shield such as polyvinyl chloride-vinyl acetate copolymer is wrapped around the head of a patient, and the face shield edge is rigidly connected with the clamping groove or bolt of the head frame to limit the three-dimensional movement of the skull; For patients with large mandibular activity, the bite block is used to maintain the mouth opening degree on the basis of the thermoplastic face shield, but individualized support and cheek expansion cannot be achieved; In the scheme, the bottom plate 1 and the arc-shaped frame 2 can be discarded in the use scene without using the bottom plate 1 and the arc-shaped frame 2 according to actual use needs, the lower bite plate 3 and the upper bite plate 4 are used alone, and the existing thermoplastic face shield, head frame and other head fixing devices are combined, the individualized expansion function of the mouthpiece is retained, the positioning accuracy of the existing equipment is utilized, and an innovative solution with compatibility, accuracy and operation efficiency is provided for head and neck tumor radiotherapy.
[0011] In summary, the sliding connection of the lower bite plate 3 and the upper bite plate 4 can be manually rotated and expanded by the rotation knob 15 to adjust the distance between the upper and lower bite plates 3, adapt to the mouth opening degree requirements of different patients, solve the problem that the traditional fixed structure cannot be individually adapted, avoid target area shielding caused by insufficient mouth opening degree, and ensure that the rays accurately cover the target area; Meanwhile, the cheek plate 17 is connected with the rotating seat 10 through the rotating shaft 9, can be rotated around the rotating shaft 9 to fix the cheek plate 17 to the cheek, the adjustable cheek plate 17 can support and fix the two sides of the cheek according to needs, expand the cheek soft tissue to the two sides, better expose the tumor target area under the radiation field, reduce the shielding of the cheek soft tissue to the tumor target area, facilitate the rays to more accurately irradiate the tumor site, and improve the local control rate of the tumor; Finally, the lower bite plate 3 and the upper bite plate 4 are both arranged as arc-shaped plates, the lower end is externally provided with a bite slot 16, the upper end of the bite slot 16 is provided with an abutting plate 12, the length and width of the abutting plate 12 are both greater than those of the bite slot 16, the abutting plate 12 can better fit the shape of the upper and lower jaws of the patient, the patient is more comfortable and stable when biting, and meanwhile, individualized adjustment can be made according to the oral anatomical structure of different patients, so that the repeatability of the positions of the upper and lower jaws and the tongue is ensured.
[0012] The preferred embodiments disclosed above are only used for helping to describe the application, the preferred embodiments do not describe all the details, and the application is not limited to the specific embodiments.
Claims
1. A multifunctional individualized mouthpiece for head and neck tumor radiotherapy, characterized in that: include: Base plate, lower bite plate, upper bite plate; A lower bite plate is provided at the upper end of the bottom plate; the front end of the lower bite plate is slidably connected to the upper bite plate; The arc-shaped frames are symmetrically arranged on both sides of the bottom plate; the front ends of the arc-shaped frames on both sides are provided with lifting grooves for sliding connection with the lower bite plate; the rear end of the lifting groove on one side is provided with a limiting sliding groove for sliding connection with the slider; Slide sleeves are symmetrically arranged on both sides of the lower bite plate and are slidably connected to the upper bite plate. A swivel seat is arranged on the inner side of the slide sleeve, and a lifting column is arranged on the outer side and is slidably connected to the lifting slot. The swivel seat is fixedly connected to the rotating shaft. The rotating shaft is movably connected to the cheek plate. Slide rods are symmetrically arranged on both sides of the lower bite plate to slide and connect with sliding sleeves; a hole is opened in the middle of the slide rod on one side to be threadedly connected with a spreading screw; the front end of the spreading screw is rotatably connected with the sliding sleeve, and a spreading knob is arranged at the rear end.
2. A multifunctional individualized mouthpiece for head and neck tumor radiotherapy according to claim 1, characterized in that: The lower bite plate and the upper bite plate are both configured as arc-shaped plates, and bite grooves are provided on the outer sides of the lower ends of both; and an abutment plate is provided on the upper ends of the bite grooves.
3. The multifunctional individualized mouthpiece for head and neck tumor radiotherapy according to claim 2, characterized in that: A tongue depressor is provided at the lower end of the lower bite plate.
4. The multifunctional individualized mouthpiece for head and neck tumor radiotherapy according to claim 2, characterized in that: The length and width of the abutment plate are both greater than the bite groove.
5. The multifunctional individualized mouthpiece for head and neck tumor radiotherapy according to claim 1, characterized in that: The lower end of the cheek plate is set to be elliptical, the upper end is set to be a rectangular plate, the middle part is provided with a hole for connecting the rotating shaft, and the middle part of the upper end is provided with a hole for threaded connection to the cheek screw; the front end of the cheek screw abuts the sliding sleeve, and the rear end is provided with a cheek knob.
6. The multifunctional individualized mouthpiece for head and neck tumor radiotherapy according to claim 5, characterized in that: The cheek plate is rotatably connected to the rotating shaft, and has a width smaller than the rotating shaft. The cheek plate can slide on the rotating shaft to adapt to different oral structures.
7. The multifunctional individualized mouthpiece for head and neck tumor radiotherapy according to claim 1, characterized in that: The front end array of the slider is provided with a plurality of limiting columns, the rear end is provided with a spring, and the upper part of the rear end is vertically provided with a push plate; the spring is fixedly connected to the rear end of the limiting slide groove.
8. The multifunctional individualized mouthpiece for head and neck tumor radiotherapy according to claim 1, characterized in that: A plurality of limiting grooves movably connected to the limiting columns are arranged in an array outside the lifting column close to the limiting sliding groove.