A limiting device for limiting the amplitude of respiratory movement and a fixing device for radiotherapy

Abstract

The utility model relates to the technical field of medical apparatus and instruments relates to a limiting device for limiting breathing movement amplitude and fixing device for radiotherapy, including airbag subassembly and inflation subassembly, the airbag subassembly includes airbag body and fixedly, be provided with first fixed seat on the airbag body, the fixedly with first fixed seat is detachable connection, the airbag body with inflation subassembly intercommunication. The utility model discloses a kind of fixing device for radiotherapy, including the limiting device, the limiting component is the fixed diaphragm covered on the airbag body top, the fixedly with first fixed seat joint, the fixed diaphragm is fixed on the second bag wall structure. The utility model sets up in non-treatment area, it is suitable for nuclear magnetic resonance environment, make nuclear magnetic resonance coil more close to human body again, improve imaging effect.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and more specifically, to a limiting device for restricting the amplitude of respiratory movements and a fixation device for radiotherapy. Background Technology

[0002] Radiation therapy is a cancer treatment method that uses radiation to kill cancer cells. However, when treating tumors in the chest and abdomen, a key challenge is the displacement of the target area due to the patient's respiratory movements. This is mainly because during abdominal breathing, the movement of the diaphragm can cause displacement of internal organs, thus affecting the accuracy of the target area's position. Clinically, abdominal compression is often used to suppress abdominal breathing and encourage the patient to switch to thoracic breathing to reduce displacement. Existing abdominal restraint devices are mainly divided into two categories: one is a rigid abdominal compression device, which can compress the abdomen, but the rigid material can cause discomfort to the patient and block the treatment radiation; the other is an inflatable device, which provides better comfort through inflation, but its compression area is often too large, making it difficult to accurately concentrate pressure on the critical area below the diaphragm.

[0003] In the prior art, Chinese patent CN213129535U discloses a fixing component and a device for restricting abdominal movement, including: a fixing body; the fixing body has at least two fixing holes, and an airbag inflation nozzle is provided on the inflatable airbag, which can extend into the fixing holes to fix the inflatable airbag to the fixing body. By providing at least two fixing holes on the fixing body, the airbag inflation nozzle on the inflatable airbag extends into the fixing holes and is fixed by the fixing holes. During use, different positions of the fixing holes can be selected to extend into, changing the position of the airbag inflation nozzle. This device achieves the abdominal compression function by combining the fixing diaphragm with the airbag, so that the pressure is precisely concentrated at the diaphragm, improving the inhibition effect of abdominal respiratory movement. However, because the air valve is made of metal, it is not suitable for the MRI environment, and the overall height of the air valve is relatively high, increasing the distance between the MRI coil and the human body, which affects the MRI imaging results. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technology where the airbag inflation nozzle affects the results of magnetic resonance imaging, and to provide a limiting device for restricting the amplitude of respiratory movements and a fixation device for radiotherapy, wherein no metal materials are placed in the treatment area, thereby improving the effect of magnetic resonance imaging.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A limiting device for restricting the range of respiratory movements is provided, comprising an airbag assembly and an inflation assembly. The airbag assembly includes an airbag body and a fixing clip. A first fixing seat is provided on the airbag body, and the fixing clip is detachably connected to the first fixing seat. The airbag body is in communication with the inflation assembly.

[0006] This utility model discloses a limiting device for restricting the amplitude of respiratory movements. During use, the airbag assembly is first placed on the patient's abdomen near the xiphoid process, with the airbag body abutting against the patient's abdomen. Then, medical tape is used to initially fix the airbag body to the patient's abdomen. Auxiliary limiting components on the treatment bed, such as restraint straps and fixing diaphragms, are placed on the first fixing seat, and then a fixing clip is installed on the first fixing seat, thereby fixing the relative position of the airbag body and the auxiliary limiting components, thus limiting the amplitude of the patient's abdominal respiratory movements. After installation, the airbag body is inflated through the inflation component. The airbag assembly expands and deforms, concentrating pressure on the patient's abdomen, effectively inhibiting the amplitude of abdominal breathing movements and improving the results of MRI.

[0007] Furthermore, the first fixing base includes a base, a connecting part, and a mounting part. The base is connected to the airbag body, and the mounting part is fixed to the base via the connecting part. The horizontal projected area of ​​the mounting part is larger than the horizontal projected area of ​​the connecting part, and the mounting part is engaged with the fixing clip. The first fixing base is stably connected to the airbag body via the base, and the mounting part is securely fixed to the base via the connecting part. Because the horizontal projected area of ​​the mounting part is larger than that of the connecting part, the contact area with the fixing clip can be increased during installation, enhancing the stability of the diaphragm connection and preventing it from falling off during use.

[0008] Furthermore, the mounting portion includes upward-curving portions around its perimeter, with the angle between the upward-curving portions and the horizontal plane being 30° to 60°. The upward-curving portions around the mounting portion facilitate positioning during diaphragm installation, make it easier for the user to apply force when clamping the diaphragm, and prevent the diaphragm from loosening after it has been deformed into the same shape, resulting in a more stable connection.

[0009] Furthermore, the fixing clip includes a clamping part and a pressing part disposed on the clamping part. The clamping part is engaged with the airbag assembly, and the pressing part is provided with multiple sets of anti-slip protrusions. During use, the anti-slip protrusions can also increase friction. The user only needs to press the pressing part lightly to deform the clamping part, thereby quickly installing it onto the first fixing base.

[0010] Furthermore, the airbag body includes an inflation nozzle, a first airbag wall structure, a second airbag wall structure, and a cavity formed between the first and second airbag wall structures. The first airbag wall structure is deformable and abuts against the patient's abdomen. The inflation nozzle is located on the non-treatment area of ​​the second airbag wall structure and connects the cavity to the inflation assembly. During inflation, the first and second airbag wall structures expand and deform. During deformation, the pressure is concentrated on the patient's abdomen due to the limiting effect of the auxiliary limiting assembly, effectively suppressing the amplitude of abdominal breathing movements. Because the inflation nozzle is located in the non-treatment area, it avoids affecting the MRI process. Furthermore, the absence of a high-protruding valve allows the MRI coil to be closer to the patient's body, improving the MRI imaging effect.

[0011] Furthermore, the second bladder wall structure is a shell structure made of rigid material, used to restrict the expansion of the bladder cavity away from the patient. The rigid shell structure of the second bladder wall structure can strictly restrict the expansion direction of the air bladder to the patient's abdomen, thereby precisely concentrating the pressure in the diaphragm area and effectively suppressing the amplitude of abdominal breathing.

[0012] Furthermore, the airbag assembly also includes a support shell covering the airbag body, and the first fixing seat is disposed on the support shell. During inflation, the airbag body expands inside the support shell, and the upper surface of the airbag body is restricted by the support shell, making the overall expansion process more stable, concentrating the pressure on the patient's abdomen, and providing better inhibition of abdominal breathing movements.

[0013] Furthermore, the support housing is provided with a snap-fit ​​groove, and the airbag body is provided with a buckle that mates with the snap-fit ​​groove. The support housing is installed on top of the airbag body through the engagement of the snap-fit ​​groove and the buckle. A detachable connection is formed between the buckle and the snap-fit ​​groove, enabling the airbag body to be detached and reused, thereby reducing the cost of medical consumables.

[0014] This utility model also provides a fixation device for radiotherapy, including the limiting device and a fixation diaphragm covering the airbag body. The fixation clamp is engaged with the first fixation seat to fix the fixation diaphragm to the airbag body.

[0015] The radiotherapy fixation device of this invention is first placed below the xiphoid process of the patient's abdomen during use. Then, the fixation diaphragm is covered on the airbag body. Next, the fixation diaphragm is firmly pressed and fixed to the device body by the snap-fit ​​between the fixation clip and the first fixation seat. Finally, the airbag body is inflated by the inflation component. During this process, due to the restraining effect of the fixation diaphragm, the airbag body mainly expands towards the patient's abdomen, thereby applying precise and controllable pressure to the diaphragm, effectively inhibiting the amplitude of abdominal breathing movements, and providing a stable operating environment for magnetic resonance imaging.

[0016] Furthermore, the fixing diaphragm is a low-temperature thermoplastic diaphragm. The low-temperature thermoplastic diaphragm can deform after heating to adapt to the shape of the fixing component and the patient's abdomen. After installation, it cools down and retains its shape, providing a stable limiting effect for the fixation of the airbag assembly on the patient's abdomen.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. It is suitable for the nuclear magnetic resonance environment and allows the nuclear magnetic resonance coil to be closer to the human body, thus improving the imaging effect; 2. By using an airbag combined with a diaphragm and a supporting shell to provide directional pressure, the pressure is concentrated on the diaphragm, effectively inhibiting the amplitude of abdominal breathing movements; 3. Improve the universality of clinical operation. The design of fixed base and detachable support shell can be adapted to different patient body shapes and support the reuse of airbags, thereby reducing medical costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a limiting device used to restrict the amplitude of respiratory movements. Figure 2 This is a schematic diagram of the structure of the first fixed base; Figure 3 This is a schematic diagram of the airbag assembly in Embodiment 3; Figure 4 This is an exploded view of the limiting device in Embodiment 3; Figure 5 This is a schematic diagram of the fixing clip.

[0019] In the attached diagram: 110, airbag body; 111, buckle; 120, fixing clip; 121, clamping part; 122, pressing part; 123, anti-slip protrusion; 130, first fixing seat; 131, base; 132, connecting part; 133, mounting part; 134, upturned part; 140, inflation nozzle; 150, supporting shell; 151, snap-fit ​​groove; 210, inflation tube; 220, air valve. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0021] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0022] Example 1 This embodiment is a first embodiment of a limiting device for restricting the range of respiratory movements, including an airbag assembly and an inflation assembly. The airbag assembly includes an airbag body 110 and a fixing clip 120. A first fixing seat 130 is provided on the airbag body 110. The fixing clip 120 is detachably connected to the first fixing seat 130. The airbag body 110 is in communication with the inflation assembly.

[0023] like Figure 1 As shown, the limiting device for restricting the amplitude of respiratory movements in this embodiment first places the airbag assembly on the patient's abdomen near the xiphoid process, so that the airbag body 110 abuts against the patient's abdomen. Then, medical tape is used to initially fix the airbag body 110 to the patient's abdomen. Auxiliary limiting components on the treatment bed, such as restraint straps and fixing diaphragms, are placed on the first fixing seat 130. Then, the fixing clip 120 is installed on the first fixing seat 130, thereby fixing the relative position of the airbag body 110 and the auxiliary limiting components, thus limiting the amplitude of the patient's abdominal respiratory movements. After installation, the airbag body 110 is inflated through the inflation component. The airbag assembly expands and deforms, concentrating the pressure on the patient's abdomen, effectively inhibiting the amplitude of abdominal respiratory movements and improving the magnetic resonance imaging effect.

[0024] In this embodiment, the inflation nozzle 140 is located at a corner or side edge of the second balloon wall structure. This design places the inflation nozzle 140 in a non-treatment area at the edge of the balloon, effectively avoiding its interference with the target area during magnetic resonance imaging, and minimizing the distance between the coil and the patient's body surface, thereby significantly improving imaging quality.

[0025] The "non-treatment area" of this utility model refers to the edge area on the airbag body 110 that does not avoid interfering with medical imaging, that is, the area away from the location of the patient's tumor. By setting the inflation nozzle 140 in this area, it can be ensured that it completely avoids the key imaging area of ​​the MRI coil after inflation, thus minimizing the impact on the uniformity of the magnetic field.

[0026] The core function of the auxiliary restraint component in this embodiment is to fix the airbag component, allowing it to conform to the patient's body surface to limit the range of abdominal movement. Based on this function, those skilled in the art will understand that the restraint component can be implemented in various forms, including but not limited to: thermoplastic membrane form, flexible restraint band form, and plastic plate form with ribs, etc.

[0027] like Figure 2 As shown, the first fixing seat 130 includes a base 131, a connecting part 132, and a mounting part 133. The base 131 is connected to the airbag body 110. The mounting part 133 is fixed to the base 131 through the connecting part 132. The horizontal projected area of ​​the mounting part 133 is larger than the horizontal projected area of ​​the connecting part 132. The mounting part 133 is engaged with the fixing clip 120. The first fixing seat 130 is stably connected to the airbag body 110 through the base 131. The mounting part 133 is firmly fixed to the base 131 through the connecting part 132. Since the horizontal projected area of ​​the mounting part 133 is larger than that of the connecting part 132, the contact area with the fixing clip 120 can be increased during installation, enhancing the stability of the diaphragm connection and preventing it from falling off during use.

[0028] like Figure 2 As shown, the mounting part 133 includes upward-curving portions 134 arranged around its perimeter, with the angle between the upward-curving portions 134 and the horizontal plane being 30° to 60°. The upward-curving portions 134 around the mounting part 133 facilitate positioning during diaphragm installation, make it easier for the user to apply force when clamping the diaphragm, and prevent the diaphragm from loosening after it has been deformed into the same shape, resulting in a more stable connection.

[0029] like Figure 5 As shown, the fixing clip 120 includes a clamping part 121 and a pressing part 122 disposed on the clamping part 121. The clamping part 121 is engaged with the airbag assembly, and the pressing part 122 is provided with multiple sets of anti-slip protrusions 123. During use, the anti-slip protrusions 123 can also increase the friction. The user only needs to press the pressing part 122 lightly to deform the clamping part 121, thereby quickly installing it onto the first fixing seat 130.

[0030] like Figure 1 , Figure 3As shown, the airbag body 110 is an isosceles trapezoid in shape, with the length of the upper base of the airbag body 110 being shorter than the length of the lower base. The airbag body 110 is restrained in the patient's abdomen by a fixation device, with the shorter upper base of the isosceles trapezoidal airbag body 110 protruding towards the patient's xiphoid cartilage. This allows the airbag body 110 to be comfortably positioned between the ribs near the sternum rather than pressing against the ribs, concentrating pressure and reducing rib obstruction during pressure application, thereby improving the effectiveness of abdominal respiratory amplitude inhibition.

[0031] The inflation assembly includes an inflation tube 210 and an air valve 220. One end of the inflation tube 210 is connected to the inflation nozzle 140, and the other end is connected to the air valve 220. The inflation tube 210 and the air valve 220 ensure a stable inflation speed during the inflation process of the airbag, while preventing gas leakage inside the airbag body 110 and maintaining a stable pressure.

[0032] The airbag body 110 includes an inflation nozzle 140, a first airbag wall structure, a second airbag wall structure, and a cavity formed between the first and second airbag wall structures. The first airbag wall structure is deformable and abuts against the patient's abdomen. The inflation nozzle 140 is located on the non-treatment area of ​​the second airbag wall structure and connects the cavity to the inflation assembly. During inflation, the first and second airbag wall structures expand and deform. During deformation, the pressure is concentrated on the patient's abdomen due to the limiting effect of the auxiliary limiting assembly, effectively suppressing the amplitude of abdominal breathing movements. Because the inflation nozzle 140 is located in the non-treatment area, it avoids affecting the MRI process. Furthermore, it does not have a high-protruding valve that extends beyond the airbag body 110, allowing the MRI coil to be closer to the patient's body and improving the MRI imaging effect.

[0033] Example 2 This embodiment is a second embodiment of a limiting device for restricting the amplitude of respiratory movements. This embodiment is similar to Embodiment 1, except that the second bladder wall structure is a shell structure made of rigid material, used to restrict the expansion of the bladder cavity away from the patient. The rigid shell structure of the second bladder wall structure can strictly limit the expansion direction of the bladder to the patient's abdomen, thereby precisely concentrating the pressure in the diaphragm region and effectively inhibiting the amplitude of abdominal breathing.

[0034] Example 3 This embodiment is the third embodiment of a limiting device for restricting the amplitude of respiratory movements. This embodiment is similar to Embodiment 1, except that, as Figure 4As shown, the airbag assembly also includes a support shell 150 covering the airbag body 110, and a first fixing seat 130 is disposed on the support shell 150. During inflation, the airbag body 110 expands inside the support shell 150. The upper surface of the airbag body 110 is restricted by the support shell 150, making the overall expansion process more stable, concentrating the pressure on the patient's abdomen, and providing better inhibition of the amplitude of abdominal breathing.

[0035] The support housing 150 is also provided with a snap-fit ​​groove 151, and the airbag body 110 is provided with a buckle 111 that mates with the snap-fit ​​groove 151. The support housing 150 is installed on top of the airbag body 110 through the engagement of the snap-fit ​​groove 151 and the buckle 111. A detachable connection is formed between the buckle 111 and the snap-fit ​​groove 151, enabling the airbag body 110 to be detached and reused, thereby reducing the cost of medical consumables.

[0036] Example 4 This embodiment is a first embodiment of a fixation device for radiotherapy, including a limiting device and a fixation diaphragm covering the airbag body 110. The fixation clip 120 is engaged with the first fixation seat 130 to fix the fixation diaphragm on the airbag body 110.

[0037] In this embodiment of the radiotherapy fixation device, the limiting device is first placed below the xiphoid process of the patient's abdomen. Then, the fixation diaphragm is covered on the airbag body 110. Next, the fixation diaphragm is firmly pressed and fixed to the device body by the snap-fit ​​between the fixation clip 120 and the first fixation seat 130. Finally, the airbag body 110 is inflated by the inflation component. During this process, due to the restraining effect of the fixation diaphragm, the airbag body 110 mainly expands towards the patient's abdomen, thereby applying precise and controllable pressure to the diaphragm, effectively suppressing the amplitude of abdominal breathing movements, and providing a stable operating environment for magnetic resonance imaging.

[0038] The fixation diaphragm in this example is a low-temperature thermoplastic diaphragm. This diaphragm deforms upon heating to adapt to the shape of the fixation component and the patient's abdomen. After installation, it cools down and retains its shape, providing a stable and restraining effect for the airbag assembly on the patient's abdomen.

[0039] In this embodiment, the fixation device for radiotherapy can be installed in the fixation slots on both sides of the treatment bed during use, thereby fixing the fixation diaphragm to the treatment bed, improving the overall fixation effect, and reducing the range of abdominal movement of the patient.

[0040] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A limiting device for restricting the amplitude of respiratory movements, characterized in that, The device includes an airbag assembly and an inflation assembly. The airbag assembly includes an airbag body (110) and a fixing clip (120). A first fixing seat (130) is provided on the airbag body (110). The fixing clip (120) is detachably connected to the first fixing seat (130). The airbag body (110) is in communication with the inflation assembly.

2. The limiting device for restricting the amplitude of respiratory movements according to claim 1, characterized in that, The first fixing seat (130) includes a base (131), a connecting part (132), and a mounting part (133). The base (131) is connected to the airbag body (110). The mounting part (133) is fixed on the base (131) through the connecting part (132). The horizontal projected area of ​​the mounting part (133) is larger than the horizontal projected area of ​​the connecting part (132). The mounting part (133) is engaged with the fixing clip (120).

3. The limiting device for restricting the amplitude of respiratory movements according to claim 2, characterized in that, The mounting part (133) includes an upturned part (134) arranged around the perimeter, the angle between the upturned part (134) and the horizontal plane being 30°~60°.

4. The limiting device for restricting the amplitude of respiratory movements according to claim 1, characterized in that, The fixing clip (120) includes a clamping part (121) and a pressing part (122) disposed on the clamping part (121). The clamping part (121) is engaged with the airbag assembly. The pressing part (122) is provided with multiple sets of anti-slip protrusions (123).

5. The limiting device for restricting the amplitude of respiratory movements according to any one of claims 1 to 4, characterized in that, The airbag body (110) includes an inflation nozzle (140), a first airbag wall structure, a second airbag wall structure, and an airbag cavity formed between the first airbag wall structure and the second airbag wall structure. The first airbag wall structure is deformable and abuts against the patient's abdomen. The inflation nozzle (140) is located on the non-treatment area of ​​the second airbag wall structure. The inflation nozzle (140) is used to connect the airbag cavity and the inflation assembly.

6. The limiting device for restricting the amplitude of respiratory movements according to claim 5, characterized in that, The second cyst wall structure is a shell structure made of rigid material, used to restrict the expansion of the cyst cavity away from the patient.

7. The limiting device for restricting the amplitude of respiratory movements according to any one of claims 1 to 4, characterized in that, The airbag assembly also includes a support housing (150) covering the airbag body (110), and the first fixing seat (130) is disposed on the support housing (150).

8. The limiting device for restricting the amplitude of respiratory movements according to claim 7, characterized in that, The support housing (150) is also provided with a snap-fit ​​groove (151), and the airbag body (110) is provided with a buckle (111) that cooperates with the snap-fit ​​groove (151).

9. A fixation device for radiotherapy, characterized in that, Includes a limiting device as described in any one of claims 1 to 8 and a fixing diaphragm covering the airbag body (110), wherein the fixing clip (120) engages with the first fixing seat (130) to fix the fixing diaphragm to the airbag body (110).

10. The fixation device for radiotherapy according to claim 9, characterized in that, The fixing film is a low-temperature thermoplastic film.

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