Oral stent for tumor radiotherapy

Abstract

The utility model relates to the field of medical treatment, in particular to an oral cavity support for tumor radiotherapy. The technical problems that an existing support is fixed in size and difficult to adjust in a self-adaptive mode according to different sizes of oral cavities of patients, and a tongue depressor is insufficient in adjusting flexibility and difficult to finely adjust are solved. An oral cavity support for tumor radiotherapy comprises an arc plate, an upper expanding frame, a lower expanding frame and the like. The upper portion of the arc plate is slidably provided with an upper expanding frame, and the lower portion of the arc plate is slidably provided with a lower expanding frame. The upper expanding frame and the lower expanding frame are automatically expanded under the action of the expanding springs, so that the expanding device can adapt to the size of the oral cavity of a patient, the adaptation problem caused by different sizes of the oral cavity can be reduced, and the expanding device is suitable for the oral cavities of various sizes; and the upper expanding frame and the lower expanding frame can be locked again by reversely rotating the two threaded knobs, so that the upper expanding frame and the lower expanding frame are prevented from loosening in the radiotherapy process, and the discomfort of the patient in the radiotherapy process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical treatment especially relates to a mouth support for tumor radiotherapy. BACKGROUND

[0002] In the radiotherapy of oral cavity cancer or head and neck tumor, the support can fix the soft tissues such as tongue and mandible to a specific position, avoid these tissues from shielding the radiation or interfering with the treatment, through the fixing effect of the support, the tumor site can be exposed to the rays as much as possible, and the radiation damage to the surrounding healthy tissues is reduced, the safety of treatment is improved, and the appropriate support design can also improve the comfort of the patient during the radiotherapy, reduce the mouth opening fatigue, and make the patient more cooperative with the treatment.

[0003] The existing support is fixed in size when placing, is difficult to adaptively adjust according to the different sizes of the oral cavity of the patient, is inconvenient to wear, and the tongue plate is insufficient in adjustment flexibility, is difficult to fine tune, is difficult to accurately adapt to the oral cavity structure of each patient, and affects the positioning effect of the support and the comfort of the patient. SUMMARY

[0004] In order to overcome the shortcomings that the existing support is fixed in size, is difficult to adaptively adjust according to the different sizes of the oral cavity of the patient, and the tongue plate is insufficient in adjustment flexibility and difficult to fine tune, the utility model aims at providing a mouth support for tumor radiotherapy, the support can be automatically expanded, adapt to different sizes of oral cavity, improve the applicability, the position of the tongue plate can be flexibly adjusted, adapt to the oral cavity structure of different patients, ensure accurate positioning, and improve the treatment effect.

[0005] The technical scheme is as follows: a mouth support for tumor radiotherapy, including arc plate, upper expansion frame, lower expansion frame, hollow tongue plate, fixing device, pushing device and locking mechanism, the upper part of the arc plate is slidably provided with the upper expansion frame, the lower part of the arc plate is slidably provided with the lower expansion frame, one hollow tongue plate is slidably arranged on the side of the lower expansion frame away from the arc plate, the arc plate is provided with the fixing device, the fixing device is used for fixing and unlocking the upper expansion frame and the lower expansion frame, the lower expansion frame is provided with the pushing device, the pushing device is used for adjusting the position of the hollow tongue plate, and the lower expansion frame is provided with the locking mechanism.

[0006] As an improvement of the above scheme, the fixing device includes a threaded knob, a guide frame and an expansion spring, two threaded knobs are threadedly connected on the arc plate, the two threaded knobs are in contact with the upper expansion frame and the lower expansion frame respectively, two guide frames are fixedly installed on the lower expansion frame, the upper expansion frame is slidably connected with the two guide frames, and a plurality of expansion springs are connected between the upper expansion frame and the two guide frames.

[0007] As the improvement of the above-mentioned scheme, the pushing device comprises a roller, a sliding block and a guide plate, the hollow tongue plate is internally rotatably provided with a roller, the lower expansion frame is slidably provided with a sliding block on one side close to the arc plate, the sliding block is internally provided with a guide plate, the guide plate is located in the hollow tongue plate, the hollow tongue plate is internally provided with a chute, and the roller is located in the chute.

[0008] As the improvement of the above-mentioned scheme, the locking mechanism comprises a clamping frame, a clamping spring and a button, the sliding block is slidably provided with a clamping frame, the clamping frame is connected with the sliding block through a clamping spring, the lower expansion frame is internally provided with a plurality of clamping grooves, the clamping frame is provided with two protrusions, the two protrusions of the clamping frame are clamped in two clamping grooves, and the clamping frame is internally provided with a button.

[0009] The utility model has the advantages of 1, the upper expansion frame and the lower expansion frame are automatically expanded under the action of expansion spring, thereby can be self -adaptation patient oral cavity size, like this can reduce the fitting problem brought by oral cavity size difference, be applicable to various size oral cavity, the upper expansion frame and the lower expansion frame are locked again through reverse rotation two threaded knobs after self -adaptation expansion to the appropriate position, avoid the loosening of the upper expansion frame and the lower expansion frame in the process of radiotherapy, thereby reduce the patient's discomfort in radiotherapy.

[0010] 2, through the position of moving guide plate and chute, the length that the hollow tongue plate is stretched from the lower expansion frame can be adjusted through the roller, the individual needs of different patients can be met, the oppression of the hollow tongue plate to oral cavity soft tissue can be avoided, and the position of the tongue is stable, the safety of the patient is better protected, and the patient is more comfortable in the process of radiotherapy. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a three-dimensional structure schematic view of the arc plate, the upper expansion frame, the lower expansion frame and the hollow tongue plate of the utility model.

[0012] Figure 2 It is a three-dimensional structure schematic view of the arc plate, the upper expansion frame, the lower expansion frame and the threaded knob of the utility model.

[0013] Figure 3 It is a sectional three-dimensional structure schematic view of the utility model.

[0014] Figure 4 It is a three-dimensional structure schematic view of the hollow tongue plate, the roller and the guide plate of the utility model.

[0015] Figure 5 It is a three-dimensional structure schematic view of the expansion frame, the lower expansion frame, the guide frame and the expansion spring of the utility model.

[0016] Figure 6 It is a three-dimensional structure schematic view of the expansion frame, the lower expansion frame, the guide frame and the expansion spring of the utility model. Figure 6 It is an enlarged schematic view of part A of the utility model.

[0017] Figure 7 It is the split structure schematic view of the upper expansion frame, the lower expansion frame, the guide frame and the expansion spring of the utility model.

[0018] Figure 8 It is the split structure schematic view of the push device and the locking device part of the utility model.

[0019] Figure 9 It is the three-dimensional structure schematic view of the hollow tongue depressor, the roller, the guide plate and the inclined slot of the utility model.

[0020] Figure 10 It is the three-dimensional structure schematic view of the sliding block, the clamping frame and the clamping groove of the utility model.

[0021] Marked label in the drawing: 1-arc plate, 2-upper expansion frame, 3-lower expansion frame, 4-thread knob, 5-guide frame, 6-expansion spring, 7-hollow tongue depressor, 8-roller, 9-sliding block, 10-guide plate, 101-inclined slot, 11-clamping frame, 12-clamping spring, 13-clamping groove, 14-button. DETAILED DESCRIPTION

[0022] The above scheme is further described in combination with specific embodiments. It should be understood that these embodiments are used to illustrate the present application and do not limit the scope of the present application. The implementation conditions used in the embodiments can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not marked are usually the conditions in the conventional experiment.

[0023] Example 1: a kind of oral cavity support for tumor radiotherapy, as shown in Figures 1-7 The arc plate 1 is provided with the upper expansion frame 2 in the upper portion in a sliding manner, and the arc plate 1 is provided with the lower expansion frame 3 in the lower portion in a sliding manner. The lower expansion frame 3 is provided with a hollow tongue depressor 7 for pressing the tongue on the side away from the arc plate 1 in a sliding manner. The arc plate 1 is provided with a fixing device, which is used to fix and unlock the upper expansion frame 2 and the lower expansion frame 3. The lower expansion frame 3 is provided with a push device, which is used to adjust the position of the hollow tongue depressor 7. The lower expansion frame 3 is provided with a locking mechanism, which is used to lock the position of the hollow tongue depressor 7.

[0024] The fixing device includes two thread knobs 4, guide frames 5 and expansion springs 6. The arc plate 1 is provided with two thread knobs 4 in a threaded connection. The two thread knobs 4 are in contact with the upper expansion frame 2 and the lower expansion frame 3, respectively. The lower expansion frame 3 is fixedly provided with two guide frames 5. The upper expansion frame 2 is in sliding connection with the two guide frames 5. The upper expansion frame 2 and the two guide frames 5 are connected with a plurality of expansion springs 6 for expanding the upper expansion frame 2 and the lower expansion frame 3.

[0025] The arc plate 1, the upper expansion frame 2, the lower expansion frame 3 and the guide frame 5 are made of polyether ether ketone material, which has little interference with the rays in radiotherapy and does not affect the penetration effect of the rays; the material of the threaded knob 4 is PEEK, which has good mechanical strength and wear resistance and is not easy to deform, and is suitable for precise threaded structures; the material of the expansion spring 6 is nylon, which has certain elasticity and wear resistance, has no interference with the rays, and has low density, and is suitable for medium-strength spring structures.

[0026] Initially, the two threaded knobs 4 lock the upper expansion frame 2 and the lower expansion frame 3 respectively, and the expansion spring 6 is in a compressed state, then the operator coats the outer side of the upper expansion frame 2 and the lower expansion frame 3 with dental impression glue, then inserts the upper expansion frame 2 and the lower expansion frame 3 into the patient's oral cavity, the patient bites on the dental impression glue, then the operator rotates the two threaded knobs 4 to move the two threaded knobs 4 away from the upper expansion frame 2 and the lower expansion frame 3, when the two threaded knobs 4 are separated from the upper expansion frame 2 and the lower expansion frame 3 respectively, the upper expansion frame 2 and the lower expansion frame 3 will move away from each other under the action of the expansion spring 6, when the upper expansion frame 2 and the lower expansion frame 3 stop expanding, the operator reversely rotates the two threaded knobs 4 to move the two threaded knobs 4 towards the upper expansion frame 2 and the lower expansion frame 3, when the two threaded knobs 4 are in contact with the upper expansion frame 2 and the lower expansion frame 3 respectively, the upper expansion frame 2 and the lower expansion frame 3 can be locked by the two threaded knobs 4, and the dental impression glue will solidify after ten minutes, which plays a role in preserving the patient's tooth model for repeated use next time; the upper expansion frame 2 and the lower expansion frame 3 automatically expand under the action of the expansion spring 6, so as to adapt to the size of the patient's oral cavity, which can reduce the fitting problem caused by different oral cavity sizes, and is suitable for various sizes of oral cavities; after the upper expansion frame 2 and the lower expansion frame 3 are adaptively expanded to the appropriate position, the upper expansion frame 2 and the lower expansion frame 3 can be locked again by reversely rotating the two threaded knobs 4, which avoids loosening of the upper expansion frame 2 and the lower expansion frame 3 during radiotherapy, thereby reducing the discomfort of the patient during radiotherapy; after radiotherapy is completed, the operator removes the dental impression glue, then the operator rotates the two threaded knobs 4, when the two threaded knobs 4 are separated from the upper expansion frame 2 and the lower expansion frame 3 respectively, the operator presses the upper expansion frame 2 and the lower expansion frame 3 to compress the expansion spring 6, then reversely rotates the two threaded knobs 4, and the upper expansion frame 2 and the lower expansion frame 3 can be locked by the two threaded knobs 4.

[0027] Example 2: Based on example 1, as shown in Figures 4-10 the pushing device includes a roller 8, a sliding block 9 and a guide plate 10, the hollow tongue depressor 7 is rotatably provided with a roller 8 through a bearing, the lower expansion frame 3 is slidably provided with a sliding block 9 on the side close to the arc plate 1, the sliding block 9 is provided with a guide plate 10 at the lower part, the guide plate 10 is located in the hollow tongue depressor 7, the hollow tongue depressor 7 is provided with an inclined slot 101, and the roller 8 is located in the inclined slot 101.

[0028] The locking mechanism comprises a clamping frame 11, a clamping spring 12 and a button 14, the clamping frame 11 is slidably arranged on the sliding block 9, the clamping frame 11 is connected with the sliding block 9 through the clamping spring 12, a plurality of clamping grooves 13 are formed in the lower expansion frame 3, two protrusions are arranged on the clamping frame 11, the two protrusions on the clamping frame 11 are clamped in two clamping grooves 13, and the button 14 is arranged on the top of the clamping frame 11.

[0029] The hollow tongue depressor 7, the sliding block 9, the guide plate 10, the clamping frame 11 and the button 14 are made of polyether ether ketone material, the polyether ether ketone material has little interference with rays in radiotherapy and does not affect the penetration effect of rays; the material of the roller 8 is polyoxymethylene, the polyoxymethylene has excellent mechanical strength and wear resistance and is suitable for use in rolling parts; the material of the clamping spring 12 is nylon, the nylon is suitable for medium-strength spring structures and can be used in structures that require certain resilience without affecting ray imaging.

[0030] The operator can adjust the position of the hollow tongue depressor 7 according to the actual situation of the patient's tongue, the operator presses the button 14 downward, the button 14 drives the clamping frame 11 to move downward, the clamping spring 12 is stretched, the two protrusions on the clamping frame 11 are separated from the two clamping grooves 13, then the operator actuates the button 14, the button 14 drives the sliding block 9, the clamping frame 11, the clamping spring 12 and the guide plate 10 to reciprocate, the guide plate 10 drives the inclined groove 101 to reciprocate, the inclined groove 101 pushes the roller 8 to move, the roller 8 drives the hollow tongue depressor 7 to move away from the lower expansion frame 3 or close to the lower expansion frame 3, so as to adjust the length of the hollow tongue depressor 7 extending out of the lower expansion frame 3, after the hollow tongue depressor 7 is adjusted to the appropriate position, the operator releases the button 14, under the action of the clamping spring 12, the clamping frame 11 and the button 14 move upward and reset, the two protrusions on the clamping frame 11 are clamped into the other two clamping grooves 13, thereby fixing the positions of the button 14, the sliding block 9, the clamping frame 11, the clamping spring 12 and the guide plate 10, so as to fix the positions of the guide plate 10, the inclined groove 101 and the hollow tongue depressor 7, by moving the positions of the guide plate 10 and the inclined groove 101, the length of the hollow tongue depressor 7 extending out of the lower expansion frame 3 can be adjusted through the roller 8, the individual needs of different patients can be met, the compression of the hollow tongue depressor 7 on the soft tissue of the oral cavity can be avoided, the position of the tongue can be stabilized, the safety of the patient can be better protected, and the patient can be more comfortable during radiotherapy.

[0031] The above has carried on the detailed introduction to the present application, the principle and implementation mode of the present application are described in the text by applying specific examples, the above example is only used to help understanding the method of the present application and its core idea; at the same time, for the general technical personnel in the art, according to the idea of the present application, the specific implementation mode and application range will have the change, according to the above, the content of the specification should not be understood as the limitation of the present application.

Claims

1. An oral stent for tumor radiotherapy, characterized in that: It includes an arc plate (1), an upper expansion frame (2), a lower expansion frame (3), a hollow tongue depressor (7), a fixing device, a pushing device, and a locking mechanism. The upper expansion frame (2) is slidably provided on the upper part of the arc plate (1), and the lower expansion frame (3) is slidably provided on the lower expansion frame (3). A hollow tongue depressor (7) is slidably provided on the side of the lower expansion frame (3) away from the arc plate (1). The arc plate (1) is provided with a fixing device, which is used to fix and unlock the upper expansion frame (2) and the lower expansion frame (3). The lower expansion frame (3) is provided with a pushing device, which is used to adjust the position of the hollow tongue depressor (7). The lower expansion frame (3) is provided with a locking mechanism, which is used to lock the position of the hollow tongue depressor (7).

2. The oral stent for tumor radiotherapy according to claim 1, characterized in that: The fixing device includes a threaded knob (4), a guide frame (5) and an expansion spring (6). Two threaded knobs (4) are threadedly connected to the arc plate (1). The two threaded knobs (4) are in contact with the upper expansion frame (2) and the lower expansion frame (3) respectively. Two guide frames (5) are fixedly installed on the lower expansion frame (3). The upper expansion frame (2) is slidably connected to the two guide frames (5). Several expansion springs (6) are connected between the upper expansion frame (2) and the two guide frames (5).

3. The oral stent for tumor radiotherapy according to claim 2, characterized in that: The pushing device includes a roller (8), a slider (9) and a guide plate (10). A roller (8) is rotatably installed inside the hollow tongue depressor plate (7). A slider (9) is slidably installed on the side of the lower expansion frame (3) near the arc plate (1). A guide plate (10) is installed at the lower part of the slider (9). The guide plate (10) is located inside the hollow tongue depressor plate (7). A slanted groove (101) is opened on the hollow tongue depressor plate (7). The roller (8) is located in the slanted groove (101).

4. The oral stent for tumor radiotherapy according to claim 3, characterized in that: The locking mechanism includes a card holder (11), a retaining spring (12), and a button (14). A card holder (11) is slidably provided on the slider (9). A retaining spring (12) is connected between the card holder (11) and the slider (9). Several card slots (13) are opened in the lower expansion frame (3). Two protrusions are provided on the card holder (11). The two protrusions on the card holder (11) are locked in two of the card slots (13). A button (14) is installed on the top of the card holder (11).

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