Auxiliary positioning device for tumor radiotherapy

Abstract

The utility model provides an auxiliary positioning device for tumor radiotherapy, and belongs to the technical field of tumor radiotherapy. Comprising a fixing plate, the top of the fixing plate is fixedly connected with a supporting frame, the supporting frame is of an inverted-V-shaped structure, one side of the inner wall of the supporting frame is fixedly connected with a pair of limiting frames, and each limiting frame is provided with a plurality of first limiting holes and a plurality of second limiting holes; the first limiting holes correspond to the second limiting holes in number and position, the limiting assembly is used for limiting and fixing the legs of a patient, and the limiting assembly is connected with the supporting frame. According to the thermoplastic film positioning device, the thighs and the shanks of a patient are fixed and limited through the arranged limiting assemblies, so that the legs of the patient cannot move in the thermoplastic film positioning process, a radiotherapy technician does not need to carry out auxiliary fixing on the positioning device, and the thermoplastic film forming stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tumor radiotherapy, in particular to an auxiliary positioning device for tumor radiotherapy. Background Art

[0002] Tumor radiotherapy is a local treatment method that uses radiation to treat tumors. Radiation includes α, β, and γ rays produced by radioactive isotopes and x-rays, electron beams, proton beams, and other particle beams produced by various x-ray therapy machines or accelerators. About 70% of cancer patients need radiotherapy during the treatment of cancer, and about 40% of cancers can be cured with radiotherapy. The role and status of radiotherapy in tumor treatment are becoming increasingly prominent, and it has become one of the main means of treating malignant tumors. During tumor radiotherapy, precise radiotherapy positioning is one of the key links to ensure accurate radiotherapy.

[0003] Before the patient undergoes radiotherapy, the radiotherapy technician in the simulation room must select a suitable mold and patient position based on the location of the patient's lesion. For patients with leg tumors, the patient's position needs to be fixed based on the extent of tumor invasion, the patient's pain level, etc. Generally speaking, the patient's legs need to be placed in a suitable position so that the radiation can accurately irradiate the tumor site. The radiotherapy technician will use thermoplastic film to position the patient's legs, and the thermoplastic film will be formed for easy subsequent use.

[0004] In the prior art, when patients with leg tumors are positioned for radiotherapy, the more common position is with one leg flat and the other leg bent at a suitable height and angle. During the positioning process, an auxiliary positioning frame with a triangular structure is placed at the bottom of the bent leg to support the patient's leg. This auxiliary positioning frame is placed directly on the radiotherapy bed. During the positioning process, the patient's legs may move uncontrollably, so the radiotherapy technician needs to assist in fixing the auxiliary positioning frame, which is inconvenient to operate the thermoplastic film to fit the patient's legs, and the movement of the patient's legs will affect the molding of the thermoplastic film. Therefore, the present application provides a tumor radiotherapy auxiliary positioning device to meet the needs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an auxiliary positioning device for tumor radiotherapy to solve the problem that the existing auxiliary positioning frame used for patients with leg tumors only supports the patient's legs, and the patient's legs may move uncontrollably during the positioning process, requiring a radiotherapy technician to assist in fixing the auxiliary positioning frame, which affects the operation.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A tumor radiotherapy auxiliary positioning device comprises a fixing plate, the top of which is fixedly connected to a support frame, the support frame is in an inverted V-shaped structure, a pair of limiting frames are fixedly connected to one side of the inner wall of the support frame, each of the limiting frames is provided with a plurality of first limiting holes and a plurality of second limiting holes, the number and positions of the first limiting holes and the second limiting holes are corresponding; a limiting assembly, the limiting assembly is used to limit and fix the patient's legs, the limiting assembly is connected to the support frame; an auxiliary fixing assembly, the auxiliary fixing assembly is used to auxiliary fix the limiting assembly, the auxiliary fixing assembly is respectively connected to the support frame and the limiting assembly.

[0008] Optionally, the limiting assembly includes a first limiting clamp fixedly connected to one side of the supporting frame, a pair of first abutment frames are fixedly connected to both sides of the top of the inner wall of the first limiting clamp, a pair of second abutment frames are fixedly connected to both sides of the bottom of the inner wall of the first limiting clamp, a second limiting clamp is slidably connected to the other side of the supporting frame, a pair of connecting frames are fixedly connected to the bottom of the second limiting clamp, the connecting frames are slidably connected to the limiting frame, a pair of third abutment frames are fixedly connected to both sides of the top of the inner wall of the second limiting clamp, and a pair of fourth abutment frames are fixedly connected to both sides of the bottom of the inner wall of the second limiting clamp.

[0009] Optionally, the auxiliary fixing assembly includes an elastic sheet fixedly connected to the bottom of the connecting frame, the other end of the elastic sheet abuts against the bottom of the inner wall of the limiting frame, and blocks are fixedly connected on both sides of the bottom of the connecting frame, and slots are provided on both sides of the block.

[0010] Optionally, protective cotton is fixedly connected to the outer wall of the support frame, and a plurality of lightweight holes are opened on the support frame.

[0011] Optionally, the first limiting clamp is fixedly connected to one side of the support frame near a connection position between the support frame and the fixing plate.

[0012] Optionally, first weakened grooves are provided on both sides of the bottom of the first limiting clamp, first through holes are provided on both sides of the first limiting clamp, and both ends of the first limiting clamp are spherical structures.

[0013] Optionally, the first abutment frame includes two connected arc plates, one end of one of the arc plates is connected to the inner wall of the first limiting clamp, and one end of the other arc plate is a spherical structure, and the first abutment frame and the second abutment frame have the same structure.

[0014] Optionally, second weakened grooves are provided on both sides of the bottom of the second limiting clip, second through holes are provided on both sides of the second limiting clip, and both ends of the second limiting clip are spherical structures.

[0015] Optionally, the third abutment frame includes two connected arc plates, one end of one of the arc plates is connected to the inner wall of the second limiting clamp, and one end of the other arc plate is a spherical structure, and the fourth abutment frame has the same structure as the third abutment frame.

[0016] Optionally, the card slot is in a V-shaped structure, two ends of a pair of card blocks are respectively in contact with the side walls of the first limiting hole and the second limiting hole, and the two ends of the card blocks are elastic structures.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] In the above scheme, a limiting component is set up to fix the patient's thigh and calf, so that the patient's legs will not move during the positioning of the thermoplastic film. There is no need for a radiotherapy technician to assist in fixing the positioning device, thereby improving the stability of the thermoplastic film molding.

[0019] By providing the first limiting clamp in the limiting assembly, which cooperates with the first abutment frame and the second abutment frame during positioning, the first limiting clamp and the first abutment frame and the second abutment frame all abut against the patient's thigh for positioning, thereby improving the stability of the positioning of the patient's thigh, and at the same time being adaptable to patients with different leg circumferences, thereby improving the applicability of the entire positioning device.

[0020] By setting the second limiting clamp in the limiting assembly, it cooperates with the third abutment frame and the fourth abutment frame during positioning. The second limiting clamp and the third abutment frame and the fourth abutment frame all abut against the patient's calf for positioning, thereby improving the stability of the patient's calf positioning. At the same time, it can be adapted to patients with different leg circumferences, thereby improving the applicability of the entire positioning device.

[0021] By setting up an auxiliary fixing component, which cooperates with the connecting frame in the limiting component, the pressure exerted on the second limiting clamp when the patient's calf is engaged with the second limiting clamp is used to drive the connecting frame to move, so that the clamping block is engaged with the first limiting hole and the second limiting hole, thereby further improving the stability of the second limiting clamp when limiting the patient's calf, which is beneficial to the stability of the limiting component in limiting the patient's leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the auxiliary positioning device for tumor radiotherapy;

[0024] Figure 2 It is a schematic diagram of a partially enlarged three-dimensional structure of the assembly of the fixing plate, the support frame and the first limiting clamp;

[0025] Figure 3 A schematic diagram of a partially cutaway three-dimensional structure of the fixing plate, the support frame and the second limiting clamp assembly;

[0026] Figure 4 for Figure 3 Enlarged structural diagram at A in the middle.

[0027] [Reference Signs]

[0028] 1. Fixed plate; 2. Support frame; 3. Lightweight hole; 4. Protective cotton; 5. First limiting clip; 6. Second limiting clip; 7. First abutting frame; 8. Second abutting frame; 9. First weakened groove; 10. First through hole; 11. Third abutting frame; 12. Fourth abutting frame; 13. Second through hole; 14. Second weakened groove; 15. Connecting frame; 16. Limiting frame; 17. First limiting hole; 18. Second limiting hole; 19. Elastic sheet; 20. Block; 21. Slot.

[0029] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0030] The following is a detailed description of a tumor radiotherapy auxiliary positioning device provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0031] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0032] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0033] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0034] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0035] like Figures 1 to 4 As shown, an embodiment of the utility model provides an auxiliary positioning device for tumor radiotherapy, including a fixing plate 1, a support frame 2 is fixedly connected to the top of the fixing plate 1, and the support frame 2 is an inverted V-shaped structure, so that the patient's legs can be bent at a certain angle, and the support frame 2 supports the patient's legs, thereby improving the stability during thermoplastic molding positioning, and a protective cotton 4 is fixedly connected to the outer wall of the support frame 2, and a plurality of lightweight holes 3 are opened on the support frame 2, and a pair of limiting frames 16 are fixedly connected to one side of the inner wall of the support frame 2, each limiting frame 16 is opened with a plurality of first limiting holes 17 and a plurality of second limiting holes 18, and the number and position of the first limiting holes 17 and the second limiting holes 18 are corresponding; a limiting component, the limiting component is used to limit and fix the patient's legs, and the limiting component is connected to the support frame 2; an auxiliary fixing component, the auxiliary fixing component is used to auxiliary fix the limiting component, and the auxiliary fixing component is respectively connected to the support frame 2 and the limiting component.

[0036] Through the setting of the limiting component, when in use, positioning plates and screw holes are set on both sides of the fixing plate 1. The fixing plate 1 can be fixed by means of the screw holes, bolts and the radiotherapy bed. After the patient lies on the radiotherapy bed, the patient puts one end of the fixing plate 1 against the root of the thigh, and uses the limiting component to fix and limit the patient's thigh and calf, so that the patient's legs will not move during the positioning process of the thermoplastic film, and there is no need for the radiotherapy technician to assist in fixing the positioning device, which improves the stability of the thermoplastic film forming. The lightweight holes 3 opened can effectively reduce the overall weight of the support frame 2, which is convenient for the radiotherapy technician to take. The protective cotton 4 is padded between the patient's legs and the support frame 2, which can improve the comfort of the support frame 2 when supporting the patient's legs.

[0037] like Figures 2 to 3 As shown, the limiting assembly includes a first limiting clamp 5 fixedly connected to one side of the support frame 2, the first limiting clamp 5 is fixedly connected to one side of the support frame 2 near the connection position between the support frame 2 and the fixed plate 1, first weakened grooves 9 are provided on both sides of the bottom of the first limiting clamp 5, first through holes 10 are provided on both sides of the first limiting clamp 5, both ends of the first limiting clamp 5 are spherical structures, a pair of first abutting frames 7 are fixedly connected on both sides of the top of the inner wall of the first limiting clamp 5, a pair of second abutting frames 8 are fixedly connected on both sides of the bottom of the inner wall of the first limiting clamp 5, the first abutting frame 7 includes two connected arc plates, one end of one of the arc plates is connected to the inner wall of the first limiting clamp 5, and one end of the other arc plate is spherical structure, the first abutting frame 7 and the second abutting frame 8 have the same structure. A second limiting clamp 6 is slidably connected to the other side of the support frame 2, and second weakened grooves 14 are provided on both sides of the bottom of the second limiting clamp 6, and second through holes 13 are provided on both sides of the second limiting clamp 6. The two ends of the second limiting clamp 6 are spherical structures, and a pair of connecting frames 15 are fixedly connected to the bottom of the second limiting clamp 6, and the connecting frames 15 are slidably connected to the limiting frame 16. A pair of third abutting frames 11 are fixedly connected to both sides of the top of the inner wall of the second limiting clamp 6, and a pair of fourth abutting frames 12 are fixedly connected to both sides of the bottom of the inner wall of the second limiting clamp 6. The third abutting frame 11 includes two connected arc plates, one end of which is connected to the inner wall of the second limiting clamp 6, and one end of the other arc plate is spherical. The fourth abutting frame 12 has the same structure as the third abutting frame 11.

[0038] By setting the first limiting clamp 5, the first through hole 10 provided on the first limiting clamp 5 reduces the weight of the first limiting clamp 5, making it easy to use. When positioning, the first limiting clamp 5 is clamped with the root of the patient's thigh. The two ends of the first limiting clamp 5 are spherical structures, so that the two ends of the first limiting clamp 5 tend to expand outward, thereby facilitating the patient's leg to be clamped into the first limiting clamp 5. In addition, the first abutment frame 7 and the second abutment frame 8 provided in the first limiting clamp 5 abut against the outer wall of the patient's leg. The first abutment frame 7, the second abutment frame 8 and the first limiting clamp 5 are all elastic structures, so as to achieve the effect of adapting to patients with different leg circumferences, thereby improving the application range of the entire positioning device. When the first limiting clamp 5 is clamped with the root of the patient's thigh, the first weakened groove 9 provided on the first limiting clamp 5 is thicker than the thickness at other positions. The first limiting clamp 5 is thin, so that the first weakened groove 9 can be elastically deformed and can be adapted to patients with different leg circumferences, and the first abutment frame 7 and the second abutment frame 8 both have a tendency to be squeezed toward the inner wall of the first limiting clamp 5. The first abutment frame 7 and the second abutment frame 8 both include two connected arc plates, and the two arc plates are oriented in opposite directions. The arc plate at the top position of the first limiting clamp 5 protrudes toward the inner wall direction away from the first limiting clamp 5, and the other arc plate is arranged at a position near the bottom of the first limiting clamp 5, protrudes toward the inner wall direction close to the first limiting clamp 5, and one end is a spherical structure. The spherical structure abuts against the patient's leg, so that when the patient's leg is clamped with the first limiting clamp 5, the leg abuts against the first abutment frame 7 and the second abutment frame 8 at the same time, further improving the stability of the patient's thigh limitation.

[0039] The second limiting clamp 6 is provided with a second through hole 13, which can effectively reduce the weight of the second limiting clamp 6, making it easy to use. When the second limiting clamp 6 is positioned, the two ends of the second limiting clamp 6 are spherical structures, so that the two ends of the second limiting clamp 6 have an outward expansion trend, which is convenient for the patient's calf to be clamped into the second limiting clamp 6. The second limiting clamp 6 is an elastic structure, and the second weakened grooves 14 provided on both sides of the second limiting clamp 6 make the thickness at the second weakened grooves 14 thinner than other positions, so that when the second limiting clamp 6 is clamped with the patient's leg, the second limiting clamp 6 The two sides can undergo elastic deformation to adapt to patients with different leg circumferences. When clamped, the third abutment frame 11 and the fourth abutment frame 12 are both elastic structures, and the structures of the third abutment frame 11 and the fourth abutment frame 12 are the same as the structures of the first abutment frame 7 and the second abutment frame 8. The third abutment frame 11 and the fourth abutment frame 12 arranged in the second limiting clamp 6 have a tendency to be squeezed toward the inner wall of the second limiting clamp 6. The patient's calf is clamped with the second limiting clamp 6 and abuts against the third abutment frame 11 and the fourth abutment frame 12 at the same time, which can improve the stability of the patient's calf limitation.

[0040] In summary, the first limiting clamp 5 and the second limiting clamp 6 are provided to fix and limit the thigh and calf of the patient respectively, and then the first limiting clamp 5 is used to cooperate with the first abutment frame 7 and the second abutment frame 8, and the second limiting clamp 6 is used to cooperate with the third abutment frame 11 and the fourth abutment frame 12. It can be suitable for patients with different leg circumferences, thereby improving the application range of the device, and the support frame 2 effectively supports the patient's legs, thereby improving the stability of the patient's legs during the use of the positioning device, so that the patient's legs will not move during the positioning of the thermoplastic film, and there is no need for the radiotherapy technician to assist in fixing the positioning device, thereby ensuring the stability of the thermoplastic film molding.

[0041] like Figure 3 and Figure 4 As shown, the auxiliary fixing assembly includes an elastic sheet 19 fixedly connected to the bottom of the connecting frame 15, and the other end of the elastic sheet 19 abuts against the bottom of the inner wall of the limiting frame 16. Both sides of the bottom of the connecting frame 15 are fixedly connected with a clamping block 20, and both sides of the clamping block 20 are provided with a clamping groove 21, and the clamping groove 21 is a V-shaped structure. The two ends of a pair of clamping blocks 20 abut against the side walls of the first limiting hole 17 and the second limiting hole 18 respectively, and the two ends of the clamping block 20 are elastic structures.

[0042] By using the provided clamping block 20, the first limiting hole 17, the second limiting hole 18 and the elastic sheet 19 in coordination, when limiting the position of the patient's calf, the radiotherapy technician can adjust the position of the second limiting clamp 6 on one side of the support frame 2 according to the position of the patient's calf that requires radiotherapy, so that the position of the patient's calf that requires radiotherapy is completely exposed. The specific operation is to pull the second limiting clamp 6 to drive the connecting frame 15, the elastic sheet 19 and the clamping block 20 to slide in the limiting frame 16. During the sliding adjustment process, the elastic sheet 19 is in a normal state, and the limiting A plurality of first limiting holes 17 and second limiting holes 18 are provided on the positioning frame 16, and the positions and numbers of the first limiting holes 17 and the second limiting holes 18 correspond to each other, and the second limiting clamp 6 can be moved to both sides of the card block 20 to engage with the first limiting holes 17, and the first limiting holes 17 are provided at the outer wall position close to the support frame 2, so that the radiotherapy technician can observe whether the card block 20 is located at the position of the first limiting hole 17 when moving the second limiting clamp 6, and the bottom of the card block 20 slides in the limiting frame 16 when moving the second limiting clamp 6. The two sides of the clamping block 20 are provided with clamping grooves 21 and the two sides of the clamping block 20 are elastic structures, so that the two sides of the clamping block 20 are in an extruded state when moving in the limiting frame 16. When moving to the position of the first limiting hole 17, the two sides of the clamping block 20 restore the deformation and abut against the first limiting hole 17 and the two sides of the second limiting hole 18. With the observation of the radiotherapy technician, the adjustment efficiency of the second limiting clip 6 is further improved. After the position of the second limiting clip 6 is adjusted, the patient clamps the calf with the second limiting clip 6. At this time, the calf The pressure of the engagement with the second limiting clamp 6 drives the connecting frame 15 and the block 20 to move in a direction perpendicular to one side of the second limiting clamp 6. At this time, the elastic sheet 19 is in a compressed state, and the block 20 is engaged with the second limiting hole 18 and the first limiting hole 17 for limiting, which further improves the stability of the second limiting clamp 6 when limiting the patient's calf. When the patient is positioned, the calf leaves the second limiting clamp 6, and the elastic force of the elastic sheet 19 drives the connecting frame 15, the block 20 and the second limiting clamp 6 to return to their original positions for easy use next time.

[0043] The working principle of the utility model is that, when in use, positioning plates and screw holes are provided on both sides of the fixing plate 1, and the fixing plate 1 can be fixed by means of the screw holes, bolts and the radiotherapy bed. After the patient lies on the radiotherapy bed, the patient abuts one end of the fixing plate 1 against the thigh root, and clamps the first limiting clip 5 against the thigh root of the patient. The first abutting frame 7 and the second abutting frame 8 provided in the first limiting clip 5 abut against the outer wall of the patient's leg, and the second limiting clip 6 can clamp against the patient's calf, and the patient's calf is simultaneously clamped against the second limiting clip 6 provided in the first limiting clip 5. The third abutment frame 11 and the fourth abutment frame 12 in the limiting clamp 6 are in abutment with each other. Under the pressure of the patient's calf on the second limiting clamp 6, the clamping block 20 is clamped and limited with the second limiting hole 18 and the first limiting hole 17. The elastic sheet 19 is in a compressed state. At this time, the thermoplastic film can be covered on the part of the patient that needs radiotherapy for positioning. When the patient's positioning is completed, the calf leaves the second limiting clamp 6, and the elastic force of the elastic sheet 19 drives the connecting frame 15, the clamping block 20 and the second limiting clamp 6 to return to their original positions, which is convenient for next use.

[0044] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A tumor radiotherapy auxiliary positioning device, characterized in that: It comprises a fixing plate, the top of which is fixedly connected to a supporting frame, the supporting frame is in an inverted V-shaped structure, one side of the inner wall of the supporting frame is fixedly connected to a pair of limiting frames, each of which is provided with a plurality of first limiting holes and a plurality of second limiting holes, and the number and position of the first limiting holes and the second limiting holes are corresponding; A limiting component, which is used to limit and fix the patient's legs, and is connected to the support frame; An auxiliary fixing component is used to assist in fixing the limiting component, and the auxiliary fixing component is respectively connected to the support frame and the limiting component.

2. The tumor radiotherapy auxiliary positioning device according to claim 1, characterized in that: The limiting assembly includes a first limiting clamp fixedly connected to one side of the supporting frame, a pair of first abutting frames are fixedly connected to both sides of the top of the inner wall of the first limiting clamp, a pair of second abutting frames are fixedly connected to both sides of the bottom of the inner wall of the first limiting clamp, a second limiting clamp is slidably connected to the other side of the supporting frame, a pair of connecting frames are fixedly connected to the bottom of the second limiting clamp, the connecting frame is slidably connected to the limiting frame, a pair of third abutting frames are fixedly connected to both sides of the top of the inner wall of the second limiting clamp, and a pair of fourth abutting frames are fixedly connected to both sides of the bottom of the inner wall of the second limiting clamp.

3. The tumor radiotherapy auxiliary positioning device according to claim 2, characterized in that: The auxiliary fixing assembly includes an elastic sheet fixedly connected to the bottom of the connecting frame, the other end of the elastic sheet abuts against the bottom of the inner wall of the limiting frame, and blocks are fixedly connected to both sides of the bottom of the connecting frame, and slots are provided on both sides of the block.

4. The tumor radiotherapy auxiliary positioning device according to claim 1, characterized in that: The outer wall of the support frame is fixedly connected with protective cotton, and a plurality of lightweight holes are opened on the support frame.

5. The tumor radiotherapy auxiliary positioning device according to claim 2, characterized in that: The first limiting clip is fixedly connected to one side of the supporting frame near a connection position between the supporting frame and the fixing plate.

6. The tumor radiotherapy auxiliary positioning device according to claim 2, characterized in that: Both sides of the bottom of the first limiting clamp are provided with first weakened grooves, both sides of the first limiting clamp are provided with first through holes, and both ends of the first limiting clamp are spherical structures.

7. The tumor radiotherapy auxiliary positioning device according to claim 2, characterized in that: The first abutment frame includes two connected arc plates, one end of one of the arc plates is connected to the inner wall of the first limiting clamp, and one end of the other arc plate is a spherical structure. The first abutment frame and the second abutment frame have the same structure.

8. The tumor radiotherapy auxiliary positioning device according to claim 2, characterized in that: Second weakened grooves are provided on both sides of the bottom of the second limiting clip, second through holes are provided on both sides of the second limiting clip, and both ends of the second limiting clip are spherical structures.

9. The tumor radiotherapy auxiliary positioning device according to claim 2, characterized in that: The third abutment frame includes two connected arc plates, one end of one of the arc plates is connected to the inner wall of the second limiting clamp, and one end of the other arc plate is a spherical structure. The fourth abutment frame has the same structure as the third abutment frame.

10. The tumor radiotherapy auxiliary positioning device according to claim 3, characterized in that: The card slot is in a V-shaped structure, and two ends of a pair of card blocks are respectively in contact with the side walls of the first limiting hole and the second limiting hole, and the two ends of the card blocks are elastic structures.

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