Compensator positioning device for radiotherapy

Abstract

The invention relates to the technical field of skin radiotherapy, in particular to a compensator positioning device for radiotherapy, which comprises a fixed outer frame arranged at the radiotherapy position of a human body, a compensator pressing mechanism used for positioning a compensator is arranged in the fixed outer frame, and the compensator is placed in an anti-falling net bag, so that the compensator can be positioned in the anti-falling net bag. The compensation object is prevented from falling off or changing in position when attached to the human body, the positioning efficiency of the position of the compensation object is improved, meanwhile, the position of the ball seat is adjusted by rotating the rotary knob, so that the position of the pressing piece is adjusted through the round piece, the compensation object on the pressing piece is conveniently and rapidly attached to the human body, the attaching tightness is improved, and the service life of the compensation object is prolonged. The device is convenient to use at different positions of a human body, is suitable for different compensators, improves the application range, reduces the cost of radiotherapy, and can effectively reduce the damage of radiation to the parts, thereby reducing the side effects and risks of treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of skin radiotherapy, and in particular relates to a compensating object positioning device used for radiotherapy. Background Art

[0002] Tumor radiotherapy is a local treatment method that uses radiation to treat tumors. Radiation includes α, β, γ rays produced by radioisotopes 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 by radiotherapy.

[0003] Compensators play an important role in radiotherapy. They are used to modify the shape and intensity of the radiotherapy beam to better fit the shape and size of the tumor, ensuring that the radiation dose is evenly distributed across the tumor while minimizing damage to surrounding normal tissue.

[0004] In the prior art, the Chinese utility model content of application number: CN202120196504.0 discloses a dose compensator fixer for breast cancer radiotherapy, including a main body, a spring and an extension belt, the left end face of the main body is connected to a cover body, and a dose compensator is arranged inside the cover body, the left end face of the dose compensator is connected to an interlayer, and a sponge strip is arranged above the interlayer, and a base is arranged above the cover body, the spring is arranged inside the connecting rod one, and the right end face of the spring is connected to the connecting rod two, the rear end face of the main body is connected to a connecting buckle, and the left end face of the main body is connected to the back face, the extension belt is connected to the rear end face of the back face, and a snap is arranged on the inner surface of the extension belt. This product is provided with a main body of mesh material, so that the product has a breathable function when worn, the anti-slip strip can prevent the product from sliding on the patient's body, the connecting buckle can facilitate the patient to wear the product, and a sponge strip is arranged at the place where the main body contacts the patient's shoulder, which can prevent the patient from feeling pain in the shoulder;

[0005] Although the compensating object positioning device used for radiotherapy in the prior art can fix the compensating object, the traditional compensating object positioning device can only position a specific compensating object. When the compensating objects are different, different positioning devices need to be used. When radiotherapy is required for patients in different body positions, more positioning devices need to be used, which increases the cost of radiotherapy. Therefore, we need to propose a compensating object positioning device for radiotherapy. Summary of the invention

[0006] In view of the above problems, the present invention provides a compensating object positioning device for radiotherapy, comprising:

[0007] A fixed outer frame is arranged at the radiotherapy site of the human body. A compensator pressing mechanism for positioning the compensator is arranged inside the fixed outer frame. An anti-dropping mechanism for binding the compensator is arranged below the compensator pressing mechanism. Two groups of first binding straps are rotatably connected to one side of the fixed outer frame, and two groups of second binding straps are rotatably connected to the other side of the fixed outer frame. The two groups of first binding straps are detachably connected to the two groups of second binding straps respectively;

[0008] The compensator pressing mechanism includes multiple groups of first mesh strips, multiple groups of second mesh strips, multiple groups of third mesh strips, multiple groups of adjusting members and a pressing piece, which are arranged in a staggered manner. The multiple groups of third mesh strips are all arranged between the multiple groups of second mesh strips. The multiple groups of second mesh strips and the multiple groups of third mesh strips are respectively arranged perpendicular to the multiple groups of first mesh strips. The multiple groups of adjusting members are arranged in a rectangular array, and the pressing piece is fixedly connected below the multiple groups of adjusting members;

[0009] The anti-dropping mechanism includes a limiting ring bonded to the lower surface of the pressing piece. An anti-dropping mesh pocket is fixedly connected along the edge of the lower surface of the limiting ring. One end of the anti-dropping mesh pocket is provided with a second magic tape fluff surface.

[0010] Further, the adjusting member includes a screw rod and a fixed ring. The screw rod is threadedly connected to the inner wall of the fixed ring. The upper end of the screw rod is fixedly connected with a knob. The lower end of the screw rod is fixedly connected with a ball head. The ball head is rotatably connected with a ball seat. The lower surface of the ball seat is fixedly connected with a round piece bonded to the upper surface of the pressing piece.

[0011] Further, the multiple groups of first mesh strips, the multiple groups of second mesh strips and the multiple groups of third mesh strips are integrally formed. The multiple groups of first mesh strips, the multiple groups of second mesh strips and the multiple groups of third mesh strips are arranged in a mesh shape. The multiple groups of first mesh strips, the multiple groups of second mesh strips and the multiple groups of third mesh strips are all PVC soft boards.

[0012] Further, the fixed outer frame includes a flexible frame. One side of the flexible frame is fixedly connected with a docking piece. The other side of the flexible frame is provided with a docking slot for inserting a flexible piece. Multiple through holes are provided on the upper surface of the docking piece. Multiple connecting screws are threadedly connected to the docking slot.

[0013] Further, both ends of the lower surface of the flexible frame are integrally formed with strengthening parts. A moisture-absorbing cotton pad is bonded to the lower surface of the strengthening parts. The cross section of the strengthening parts is arranged in a C shape.

[0014] Further, the first binding strap includes a first binding band. One end of the first binding band is sewn with a first elastic band. One end of the first elastic band is fixedly connected with a first connecting plate. A positioning buckle is arranged on the upper surface of the first binding band.

[0015] Furthermore, a plurality of groups of first anti-skid pads are bonded to the lower surface of the first strap, the plurality of groups of first anti-skid pads are arranged at equal intervals, the first anti-skid pads are rubber sheets, and a Velcro hook tape is sewn on one end of the upper surface of the first strap.

[0016] Furthermore, the second restraint belt includes a second strap, a second elastic belt is sewn to one end of the second strap, a second elastic belt is fixedly connected to one end of the second connecting plate, and a lower surface of the second strap is provided with a plurality of positioning holes for positioning buckles to be inserted.

[0017] Furthermore, a first Velcro suede tape bonded to the Velcro hook tape is sewn on one end of the lower surface of the second strap, and a plurality of second anti-slip pads are bonded on the other end of the lower surface of the second strap.

[0018] Furthermore, two groups of side seats are fixedly connected to adjacent two sides of the docking groove of the flexible frame, and the first connecting plate and the second connecting plate are rotatably connected to the side seats.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention cooperates between the adjusting member, the pressing sheet and the anti-slip net bag, and places the compensating material in the anti-slip net bag to prevent the compensating material from falling off or changing its position when it fits the human body, thereby improving the efficiency of positioning the compensating material. At the same time, the position of the ball seat is adjusted by rotating the knob, so that the position of the pressing sheet is adjusted by the round sheet, so that the compensating material on the pressing sheet can be quickly and conveniently fitted to the human body, improving the tightness of the fit, and being convenient for use at different positions on the human body. It is suitable for use with different compensating materials, thereby increasing the scope of application, reducing the cost of radiotherapy, and effectively reducing the damage of radiation to these parts, thereby reducing the side effects and risks of treatment;

[0021] 2. The present invention cooperates with the first restraint belt, the second restraint belt and the fixed outer frame, and the first restraint belt and the second restraint belt are wrapped around the human body, so that it is convenient to use on different parts of the human body. The positioning buckle is inserted into the positioning hole, which is convenient for patients of different body shapes and improves the scope of application. At the same time, the fixed outer frame is made of polymethyl methacrylate, which has high light transmittance and a relatively soft overall texture, so that it is convenient to fit the human body and improve the comfort when positioning the compensation object;

[0022] 3. The present invention cooperates with the flexible frame, the docking piece, the docking groove and the connecting screws, and the docking piece is inserted into the docking groove, which facilitates the positioning of the compensating object in a larger radiotherapy range and improves the scope of application. At the same time, the connecting screws are used to improve the stability of the flexible frame after splicing, ensuring that every part of the patient's skin is evenly covered with the compensating object, ensuring the fit of the compensating object to the skin.

[0023] 4. The present invention facilitates the placement of different compensation objects in the anti-slip net bag through the coordination between the second Velcro velvet tape and the compression plate, and utilizes the second Velcro velvet tape to adhere to the compression plate, thereby preventing the compensation objects from falling off during the positioning process and improving the efficiency of positioning the compensation objects.

[0024] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It shows a schematic diagram of the overall top view structure according to an embodiment of the present invention;

[0027] Figure 2 It shows a schematic diagram of the overall bottom-up structure according to an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of a top view of a fixed outer frame according to an embodiment of the present invention is shown;

[0029] Figure 4 A schematic diagram of the bottom-up structure of the positioning outer frame according to an embodiment of the present invention is shown;

[0030] Figure 5 A schematic diagram of the structure of a compensating object pressing mechanism according to an embodiment of the present invention is shown;

[0031] Figure 6 A schematic diagram of the structure of an adjusting member according to an embodiment of the present invention is shown;

[0032] Figure 7 A schematic structural diagram of a first restraining belt and a second restraining belt according to an embodiment of the present invention is shown.

[0033] In the figure: 100, fixed outer frame; 101, flexible frame; 102, reinforcement part; 103, docking piece; 104, docking groove; 105, connecting screw; 106, through hole; 107, side seat; 108, moisture-absorbing cotton pad; 200, first binding belt; 201, first binding belt; 202, first elastic belt; 203, first connecting plate; 204, first anti-slip pad; 205, Velcro hook belt; 206, positioning buckle; 300, second binding belt; 301, second binding belt; 302, second elastic belt; 303, first Second connecting plate; 304, second anti-skid gasket; 305, first Velcro velvet belt; 306, positioning hole; 400, compensating object clamping mechanism; 401, first mesh strip; 402, second mesh strip; 403, adjusting member; 4031, screw; 4032, knob; 4033, ball head; 4034, ball seat; 4035, disc; 4036, fixing ring; 404, third mesh strip; 405, clamping plate; 500, anti-falling mechanism; 501, limiting ring; 502, anti-falling net bag; 503, second Velcro velvet belt. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-7 As shown, an embodiment of the present invention provides a compensating object positioning device for radiotherapy, comprising:

[0036] like Figure 1 As shown, a fixed outer frame 100 is arranged at a human body radiotherapy site, a compensating object pressing mechanism 400 for positioning a compensating object is arranged inside the fixed outer frame 100, an anti-falling mechanism 500 for restraining the compensating object is arranged below the compensating object pressing mechanism 400, two groups of first restraining belts 200 are rotatably connected to one side of the fixed outer frame 100, and two groups of second restraining belts 300 are rotatably connected to the other side of the fixed outer frame 100, and the two groups of first restraining belts 200 are detachably connected to the two groups of second restraining belts 300 respectively;

[0037] like Figure 5-6As shown, the compensating material pressing mechanism 400 includes a plurality of groups of first mesh strips 401, a plurality of groups of second mesh strips 402, a plurality of groups of third mesh strips 404, a plurality of groups of adjusting members 403 and a pressing sheet 405 which are arranged in a staggered manner. The plurality of groups of third mesh strips 404 are arranged between the plurality of groups of second mesh strips 402. The plurality of groups of second mesh strips 402 and the plurality of groups of third mesh strips 404 are respectively arranged vertically with the plurality of groups of first mesh strips 401. The plurality of groups of adjusting members 403 are arranged in a rectangular array. The pressing sheet 405 is fixedly connected under the plurality of groups of adjusting members 403. When the compensating material in the anti-falling mechanism 500 is unevenly placed, the knob 4032 is used to drive the screw rod 4031 to rotate. The screw rod 4031 adjusts the position of the ball seat 4034 through the ball head 4033, so that the disc 4035 adjusts the position of the pressing sheet 405, so as to facilitate the compensating material to be flattened, improve the fit between the compensating material and the patient's skin, and improve the radiotherapy effect.

[0038] like Figure 5 As shown, the anti-drop mechanism 500 includes a limiting ring 501 bonded to the lower surface of the compression plate 405, and an anti-drop net bag 502 is fixedly connected to the edge of the lower surface of the limiting ring 501, and a second Velcro velvet band 503 is arranged at one end of the anti-drop net bag 502. The anti-drop net bag 502 is used to quickly fix the compensation object, thereby avoiding the position of the compensation object from shifting and improving the accuracy of radiotherapy. The second Velcro velvet band 503 is used to close the opening of the anti-drop net bag 502, thereby improving the convenience of use. The outer side of the compression plate 405 and the outer side of the limiting ring 501 are bonded with a hook band (not shown in the figure) that is the same as the second Velcro velvet band 503.

[0039] like Figure 6 As shown, the adjusting member 403 includes a screw rod 4031 and a fixing ring 4036, the screw rod 4031 is threadedly connected to the inner wall of the fixing ring 4036, the upper end of the screw rod 4031 is fixedly connected to a knob 4032, the lower end of the screw rod 4031 is fixedly connected to a ball head 4033, the ball head 4033 is rotatably connected to a ball seat 4034, the lower surface of the ball seat 4034 is fixedly connected to a disc 4035 bonded to the upper surface of the pressing plate 405, and the screw rod 4031 is rotated to facilitate the adjustment. The ball head 4033 is made to rotate in the ball seat 4034, and the rotation of the screw 4031 is converted into a linear movement of the ball seat 4034, so as to facilitate the adjustment of the distance between the compression plate 405 and the patient's skin at different positions, thereby facilitating the close fitting of the compensation object to the patient's skin. The compression plate 405 is a flexible transparent plate, the disc 4035 is a transparent hard plastic plate, and the multiple groups of adjustment members 403 are arranged at equal intervals, which improves the uniformity of the adjustment of the distance between the compression plate 405 and the skin.

[0040] like Figure 5As shown, multiple groups of first mesh strips 401, multiple groups of second mesh strips 402, and multiple groups of third mesh strips 404 are integrally formed. The multiple groups of first mesh strips 401, multiple groups of second mesh strips 402, and multiple groups of third mesh strips 404 are arranged in a mesh pattern. The multiple groups of first mesh strips 401, multiple groups of second mesh strips 402, and multiple groups of third mesh strips 404 are all made of PVC soft plates. The use of the multiple groups of first mesh strips 401, multiple groups of second mesh strips 402, and multiple groups of third mesh strips 404 increases the service life of the flexible frame 101 and prevents the flexible frame 101 from deforming under the pulling of the first restraint strap 200 and the second restraint strap 300. There are at least four groups of first mesh strips 401, and at least two groups of second mesh strips 402 and third mesh strips 404. The first mesh strips 401, second mesh strips 402, and third mesh strips 404 have the same thickness, and the ends of the first mesh strips 401, second mesh strips 402, and third mesh strips 404 are fixedly connected to the inner wall of the flexible frame 101.

[0041] As Figure 2-4 shown, the fixed outer frame 100 includes a flexible frame 101. One side of the flexible frame 101 is fixedly connected with a docking piece 103. The other side of the flexible frame 101 is provided with a docking groove 104 for inserting a flexible piece. The upper surface of the docking piece 103 is provided with multiple through holes 106. Multiple connecting screws 105 are threadedly connected to the docking groove 104. When the radiotherapy range is large, the docking piece 103 is inserted into the docking groove 104, and the docking piece 103 and the docking groove 104 are fixed by passing multiple connecting screws 105 through the through holes 106, thereby increasing the treatment range.

[0042] As Figure 2-4 shown, both ends of the lower surface of the flexible frame 101 are integrally formed with strengthening parts 102. A moisture-absorbing cotton pad 108 is bonded to the lower surface of the strengthening parts 102. The cross-section of the strengthening parts 102 is arranged in a U shape. The use of the strengthening parts 102 improves the overall stability of the flexible frame 101 and at the same time improves the comfort of fitting on the skin surface.

[0043] As Figure 2-4 shown in FIGS. 6 and 7, the first restraint strap 200 includes a first strap 201. One end of the first strap 201 is sewn with a first elastic band 202. One end of the first elastic band 202 is fixedly connected with a first connecting plate 203. A positioning buckle 206 is arranged on the upper surface of the first strap 201. The first strap 201 is mainly made of polyester fiber and cotton fiber and can adapt to bandaging of different parts and sizes. At the same time, it has good air permeability, reducing skin moisture and discomfort. The first elastic band 202 is made of rubber material, which is durable and not easily deformed. The position of the first strap 201 is further fixed through the positioning buckle 206, thereby preventing the hook surface of the magic tape 205 from shifting from the first magic tape fluff surface 305 after long-term use.

[0044] As Figure 7As shown, a plurality of groups of first anti-skid pads 204 are bonded to the lower surface of the first strap 201, and the plurality of groups of first anti-skid pads 204 are arranged at equal intervals. The first anti-skid pads 204 are rubber sheets, and a Velcro hook surface band 205 is sewn on one end of the upper surface of the first strap 201. The plurality of groups of first anti-skid pads are used to fit the patient's skin, thereby preventing the position of the first strap 201 from changing, and preventing the overall position of the compensation object positioning device from shifting. The Velcro hook surface band 205 is fitted with the Velcro velvet band, which can further improve the stability of the compensation object positioning device fixed on the patient's limb.

[0045] like Figure 7 As shown, the second restraint belt 300 includes a second strap 301, a second elastic belt 302 is sewn on one end of the second strap 301, and a second connecting plate 303 is fixedly connected to one end of the second elastic belt 302. A plurality of positioning holes 306 for the positioning buckle 206 to be inserted are provided on the lower surface of the second strap 301. The plurality of positioning holes 306 are used to facilitate the insertion of the positioning buckle 206, thereby improving the stability of the first strap 201 and the second strap 301 after being fixed. At the same time, the material of the second elastic belt 302 is the same as that of the first elastic belt 202, thereby improving the use of patients with different body sizes and increasing the scope of application.

[0046] like Figure 7 As shown, one end of the lower surface of the second strap 301 is sewn with a first Velcro velvet strap 305 bonded to the Velcro hook strap 205, and the other end of the lower surface of the second strap 301 is bonded with multiple groups of second anti-slip pads 304. The second anti-slip pads 304 and the first anti-slip pads 204 improve the overall positioning stability of the positioning device, prevent the compensation object positioning device from positional displacement, and avoid positional displacement of the compensation object.

[0047] like Figure 7 As shown, two sets of side seats 107 are fixedly connected to the adjacent two sides of the docking groove 104 of the flexible frame 101, and the first connecting plate 203 and the second connecting plate 303 are both rotatably connected to the side seats 107. The side seats 107 are conveniently rotatably connected to the first connecting plate 203 and the second connecting plate 303, so that the first restraint belt 200 and the second restraint belt 300 of different materials can be replaced according to the usage, thereby improving the overall applicability of the device.

[0048] When in use, the compensation object is placed in the anti-slip net bag 502, and the second Velcro velvet belt 503 at the end of the anti-slip net bag 502 is bonded to the outer side of the limiting ring 501 and the pressing plate 405, so as to avoid the position movement of the compensation object when it is positioned on the patient's skin surface. The flexible frame 101 is placed at the position where the patient needs radiotherapy, so that the moisture-absorbing cotton pad 108 is attached to the skin surface, and the two groups of first binding belts 200 and the two groups of second binding belts 300 are wrapped around the patient's limbs. The two groups of first binding belts 200 and the two groups of second binding belts 300 can be arranged in parallel or in a cross-arrangement, so as to facilitate the positioning of the flexible frame 101 and improve the stability of the flexible frame 101 fixed on the patient's skin.

[0049] After the flexible frame 101 is positioned, the compensating material in the anti-slip net bag 502 is attached to the patient's skin surface. However, due to insufficient pressure, gaps may be generated between the skin and the compensating material. The multiple groups of adjusting parts 403 are rotated, and the knobs 4032 are rotated in turn to drive the screw 4031 to rotate, so that the screw 4031 rotates in the fixing ring 4036 and drives the ball head 4033 to rotate in the ball seat 4034, so that the ball seat 4034 is away from the fixing ring 4036, and then the disc 4035 drives the pressing sheet 405 to approach the patient's skin, so that the compensating material is fully attached to the patient's skin surface and the uneven position on the patient's skin is filled, so as to protect normal tissues, maintain normal tissue functions, reduce adverse reactions, promote tumor cell apoptosis and assist in treatment during radiotherapy;

[0050] When the range of radiotherapy compensation is large, multiple compensation object positioning devices are spliced ​​and used, so that the docking piece 103 is inserted into the docking groove 104, and the docking piece 103 is fixed in the docking groove 104 using the connecting screw 105, and the above operation is repeated to make the compensation object fit the patient's skin, thereby improving the stability of the adjacent flexible frame 101 and increasing the treatment range of radiotherapy.

[0051] Compensators can effectively protect the normal tissues around the tumor, avoid or reduce radiation damage to these tissues, thereby reducing side effects and risks. In addition, they can maintain the physiological functions of normal tissues and ensure that patients maintain their quality of life while receiving treatment.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A compensating object positioning device for radiotherapy, characterized in that: include: A fixed outer frame (100) is arranged at a human body radiotherapy site, wherein a compensating object clamping mechanism (400) for positioning a compensating object is arranged inside the fixed outer frame (100), an anti-falling mechanism (500) for restraining the compensating object is arranged below the compensating object clamping mechanism (400), two groups of first restraining belts (200) are rotatably connected to one side of the fixed outer frame (100), and two groups of second restraining belts (300) are rotatably connected to the other side of the fixed outer frame (100), and the two groups of the first restraining belts (200) are respectively detachably connected to the two groups of the second restraining belts (300); The compensating material pressing mechanism (400) comprises a plurality of groups of first mesh strips (401), a plurality of groups of second mesh strips (402), a plurality of groups of third mesh strips (404), a plurality of groups of adjusting members (403) and a pressing sheet (405) arranged in a staggered manner, wherein the plurality of groups of third mesh strips (404) are arranged between the plurality of groups of second mesh strips (402), the plurality of groups of second mesh strips (402) and the plurality of groups of third mesh strips (404) are respectively arranged vertically to the plurality of groups of first mesh strips (401), the plurality of groups of adjusting members (403) are arranged in a rectangular array, and the pressing sheet (405) is fixedly connected below the plurality of groups of adjusting members (403); The anti-drop mechanism (500) comprises a limiting ring (501) bonded to the lower surface of the compression plate (405), an anti-drop net bag (502) being fixedly connected along the edge of the lower surface of the limiting ring (501), and a second Velcro suede belt (503) being provided at one end of the anti-drop net bag (502).

2. A compensating object positioning device for radiotherapy according to claim 1, characterized in that: The adjusting member (403) comprises a screw rod (4031) and a fixing ring (4036), wherein the screw rod (4031) is threadedly connected to the inner wall of the fixing ring (4036), the upper end of the screw rod (4031) is fixedly connected to a knob (4032), the lower end of the screw rod (4031) is fixedly connected to a ball head (4033), the ball head (4033) is rotatably connected to a ball seat (4034), and the lower surface of the ball seat (4034) is fixedly connected to a disc (4035) bonded to the upper surface of the pressing plate (405).

3. A compensating object positioning device for radiotherapy according to claim 2, characterized in that: The plurality of groups of the first mesh strips (401), the plurality of groups of the second mesh strips (402) and the plurality of groups of the third mesh strips (404) are integrally formed, the plurality of groups of the first mesh strips (401), the plurality of groups of the second mesh strips (402) and the plurality of groups of the third mesh strips (404) are arranged in a mesh shape, and the plurality of groups of the first mesh strips (401), the plurality of groups of the second mesh strips (402) and the plurality of groups of the third mesh strips (404) are all PVC soft boards.

4. A compensating object positioning device for radiotherapy according to claim 3, characterized in that: The fixed outer frame (100) comprises a flexible frame (101), one side of the flexible frame (101) is fixedly connected with a docking piece (103), the other side of the flexible frame (101) is provided with a docking groove (104) for the flexible piece to be plugged into, the upper surface of the docking piece (103) is provided with a plurality of groups of through holes (106), and the docking groove (104) is threadedly connected with a plurality of groups of connecting screws (105).

5. A compensating object positioning device for radiotherapy according to claim 4, characterized in that: At both ends of the lower surface of the flexible frame (101), a reinforcing portion (102) is integrally formed. A moisture-absorbing cotton pad (108) is adhered to the lower surface of the reinforcing portion (102), and the cross-section of the reinforcing portion (102) is in a C-shaped arrangement.

6. A compensating object positioning device for radiotherapy according to claim 5, characterized in that: The first restraint strap (200) includes a first strap (201). One end of the first strap (201) is sewn with a first elastic band (202). One end of the first elastic band (202) is fixedly connected to a first connecting plate (203). A positioning buckle (206) is arranged on the upper surface of the first strap (201).

7. A compensating object positioning device for radiotherapy according to claim 6, characterized in that: A plurality of groups of first anti-slip pads (204) are adhered to the lower surface of the first strap (201). The plurality of groups of first anti-slip pads (204) are arranged at equal intervals. The first anti-slip pads (204) are rubber sheets. One end of the upper surface of the first strap (201) is sewn with a hook surface of a magic tape (205).

8. A compensating object positioning device for radiotherapy according to claim 7, characterized in that: The second restraint strap (300) includes a second strap (301). One end of the second strap (301) is sewn with a second elastic band (302). One end of the second elastic band (302) is fixedly connected to a second connecting plate (303). A plurality of positioning holes (306) for inserting the positioning buckle (206) are formed in the lower surface of the second strap (301).

9. A compensating object positioning device for radiotherapy according to claim 8, characterized in that: One end of the lower surface of the second strap (301) is sewn with a first magic tape fluffy surface (305) adhered to the hook surface of the magic tape (205). A plurality of groups of second anti-slip pads (304) are adhered to the other end of the lower surface of the second strap (301).

10. A compensating object positioning device for radiotherapy according to claim 9, characterized in that: Two groups of side seats (107) are fixedly connected to both sides adjacent to the docking groove (104) of the flexible frame (101). The first connecting plate (203) and the second connecting plate (303) are both rotatably connected to the side seats (107).

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