An abdominal compression device for breast cancer radiotherapy

Abstract

The utility model discloses an abdominal pressure device for breast cancer radiotherapy, including support upper plate, support lower plate and fixed base, the fixed base is provided with two, the utility model discloses when using, through the rotation of rocker and drive threaded rod lifting movement in the threaded bushing inner chamber, to drive abdominal compression box downward movement and press the abdomen of patient, and through the work of air inlet fan can be filtered after the external air through the dust screen, and through the air collection cover and air hose, air is sent into abdominal compression box, and through the setting of first exhaust hole, second exhaust hole and third exhaust hole can be pressed to the part of patient's abdomen and send air, thereby avoiding the summer when the stuffy sweating, in addition, through the setting of heater can also heat air and send into abdominal compression box, thereby can preheat abdominal compression box, avoid in winter because abdominal compression box temperature is lower and directly with the abdomen of patient contact and cause the discomfort.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to an abdominal pressure device for radiotherapy of breast cancer. Background Technology

[0002] During breast cancer radiotherapy, to reduce abdominal movement as needed, an abdominal pressure plate is routinely used to compress the patient's abdomen, so that the abdominal movement with breathing is reduced or eliminated. The conventional abdominal pressure plate is a U-shaped frame erected at the patient's abdomen, with the abdominal pressure plate placed inside the U-shaped frame. The screw in the middle of the U-shaped frame drives the abdominal pressure plate to press down and compress the patient's abdomen.

[0003] However, existing abdominal pressure plates usually come into direct contact with the patient's skin, which not only poses hygiene problems, but also causes discomfort to the patient in winter and summer. Furthermore, the existing abdominal pressure plates are relatively complicated and cumbersome to assemble and disassemble, which increases the workload of medical staff. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide an abdominal pressure device for radiotherapy of breast cancer.

[0005] One of the objectives of this utility model is achieved through the following technical solution:

[0006] An abdominal pressure device for radiotherapy of breast cancer includes an upper support plate, a lower support plate, and two fixation seats. The two fixation seats are arranged symmetrically about the central axis of the upper support plate. Each fixation seat has a receiving groove on its top that fits the lower support plate. The two lower support plates are slidably inserted into the cavities of adjacent receiving grooves. Each fixation seat has a first locking knob connected to its opposite side for fixing the lower support plate. The left lower support plate has a first cavity near its top, and the top of the left lower support plate has a first through hole communicating with the inner cavity of the first cavity. The cavity is rotatably connected to a connecting shaft, and the top end of the connecting shaft is fixedly connected to the upper plate of the bracket. The bottom end of the connecting shaft is fixedly connected to a limit plate, and two first fixing holes are opened on the connecting shaft, which are distributed vertically. A first T-shaped rod slides through the left side of the lower plate of the bracket on the left side, and the longest end of the first T-shaped rod is inserted into the inner cavity of the first fixing hole at the top. A first spring is sleeved on the outer wall of the first T-shaped rod, and the two ends of the first spring are fixedly connected to the first T-shaped rod and the lower plate of the bracket, respectively. A pressing mechanism is provided on the upper plate of the bracket. Opening slots are opened at the bottom of the opposite side of the two fixing seats, and a second locking knob is connected to the opposite side of the two fixing seats.

[0007] Furthermore, a second cavity is provided near the top of the lower plate of the bracket on the right side, and a through groove communicating with the inner cavity of the second cavity is provided at the top of the lower plate of the bracket on the right side. A matching connecting plate slides through the inner cavity of the through groove, and a second fixing hole is provided on the connecting plate. A second T-shaped rod slides through the right side wall of the lower plate of the bracket on the right side, and the longest end of the second T-shaped rod is inserted into the inner cavity of the second fixing hole. A second spring is sleeved on the outer wall of the second T-shaped rod, and the two ends of the second spring are fixedly connected to the lower plate of the bracket and the second T-shaped rod, respectively.

[0008] Furthermore, the pressing mechanism includes an abdominal pressure box, which is located directly below the upper plate of the support. A second through hole is provided at the middle of the top of the abdominal pressure box, and a threaded rod is rotatably connected to the inner cavity of the second through hole. Two fixing rings are sleeved and fixed to the outer wall of the threaded rod, and the two fixing rings are respectively fitted to the inner and outer sides of the abdominal pressure box. A threaded sleeve is provided at the middle of the upper plate of the support, and the top end of the threaded rod passes through the inner cavity of the threaded sleeve and extends to the top of the upper plate of the support. Several rocker arms are fixedly connected to the outer wall of the threaded rod near the top end. Two symmetrical square holes are provided on the upper plate of the support, and a matching square rod slides through the inner cavity of the square hole. The bottom ends of the two square rods are fixedly connected to the top of the abdominal pressure box.

[0009] Furthermore, a vent hole is provided at the center of the threaded rod, and a sealing ring is slidably connected to the inner cavity of the vent hole near the top. An air supply hose is fixedly connected to the top of the sealing ring. A limiting ring is fitted on the outer wall of the air supply hose, and the outer wall of the limiting ring is fixedly connected to the inner wall of the vent hole. A fixing cylinder is provided on the top right side of the upper plate of the bracket, and an air inlet is provided on the right side of the fixing cylinder. A dust filter screen is provided in the inner cavity of the air inlet. From left to right, an air collecting hood, a heater, and an air intake fan are arranged in the inner cavity of the fixing cylinder. The other end of the air supply hose passes through the right side wall of the fixing cylinder and is connected and fixed to the air collecting hood.

[0010] Furthermore, the bottom of the abdominal compression box is provided with several first exhaust holes evenly distributed, and the bottom left and right sides of the abdominal compression box are provided with several second exhaust holes, and the left and right sides of the abdominal compression box are provided with third exhaust holes.

[0011] Furthermore, a T-shaped pressure plate is slidably connected to the square rod, and a connecting ring is fixedly sleeved on the outer wall of the square rod. A third spring is sleeved on the outer wall of the square rod, and the two ends of the third spring are fixedly connected to the connecting ring and the T-shaped pressure plate, respectively.

[0012] Furthermore, a groove is formed at the top of the inner cavity of the opening slot, and an n-shaped plate is slidably connected to the inner cavity of the groove. A roller is provided in the inner cavity of the n-shaped plate, and a rotating shaft is fixed through the roller. The two ends of the rotating shaft are rotatably connected to the left and right sides of the inner cavity of the n-shaped plate, respectively. Two vertically symmetrical third fixing holes are formed on the side of the n-shaped plate away from the center of the inner cavity of the opening slot. A third T-shaped rod is slidably passed through the fixing seat, and the longest end of the third T-shaped rod is inserted into the inner cavity of the third fixing hole located at the top. A fourth spring is sleeved on the outer wall of the third T-shaped rod, and the two ends of the fourth spring are fixedly connected to the third T-shaped rod and the fixing seat, respectively.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By rotating the rocker arm and moving the threaded rod up and down within the threaded sleeve, the abdominal pressure box can be moved downwards to press on the patient's abdomen. The operation of the air intake fan draws outside air through the dust filter into the fixed cylinder, and then delivers the air into the abdominal pressure box through the air collector and air delivery hose. The first, second, and third exhaust ports provide airflow to the area of ​​the patient's abdomen being pressed, thus avoiding stuffiness and sweating in summer. In addition, the heater can heat the air before delivering it into the abdominal pressure box, thus preheating the box and preventing discomfort caused by direct contact with the patient's abdomen due to the low temperature of the abdominal pressure box in winter.

[0015] 2. The T-shaped pressure plate, connecting ring, and third spring allow sterile dressings to be attached to the lower surface of the abdominal pressure box and clamped and fixed to the box by the T-shaped pressure plate, thus preventing the abdominal pressure box from directly contacting the patient's skin and affecting the hygienic effect of the device.

[0016] 3. By configuring the connecting shaft, limiting plate, first fixing hole, first T-shaped rod, first spring, connecting plate, second fixing hole, second T-shaped rod, and second spring, when it is necessary to disassemble the abdominal pressure device to facilitate the patient's lying down and getting up, firstly, pull the first T-shaped rod out of the inner cavity of the first fixing hole at the top, then pull the second T-shaped rod out of the inner cavity of the second fixing hole, and then pull the upper plate of the bracket upwards. After the connecting plate is pulled out of the inner cavity of the through groove, the upper plate of the bracket can be rotated around the connecting shaft as the center, thereby moving the upper plate of the bracket away from the patient's abdomen. This allows the patient to lie down and get up easily without disassembling the device, reducing the workload of medical staff in disassembling and assembling the device.

[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0019] Figure 2 This is a cross-sectional structural diagram of this embodiment;

[0020] Figure 3 This is a schematic cross-sectional view of the compression box in this embodiment;

[0021] Figure 4 for Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 5 for Figure 2 Enlarged view of the structure at point B;

[0023] Figure 6 for Figure 2 Enlarged view of the structure at point C;

[0024] Figure 7 for Figure 3 Enlarged view of the structure at point D.

[0025] In the diagram: 1. Upper plate of the bracket; 2. Lower plate of the bracket; 3. Fixing base; 4. Storage slot; 5. First locking knob; 6. Opening slot; 7. Second locking knob; 8. Threaded sleeve; 9. Threaded rod; 10. Pressure box; 11. Fixing ring; 12. Rocker arm; 13. First exhaust port; 14. Second exhaust port; 15. Third exhaust port; 16. Square rod; 17. Fixing cylinder; 18. Dust filter; 19. Air inlet fan; 20. Heater; 21. Air collector hood; 22. Air supply hose; 23. Sealing ring; 24. Limiting ring; 25. First cavity; 26. Connecting shaft; 27. Limiting plate; 28. First fixing hole; 29. ​​First T-shaped rod; 30. First spring; 31. Second cavity; 32. Connecting plate; 33. Second fixing hole; 34. Second T-shaped rod; 35. Second spring; 36. T-shaped pressure plate; 37. Connecting ring; 38. Third spring; 39. Groove; 40. N-shaped plate; 41. Roller; 42. Rotating shaft; 43. Third fixing hole; 44. Third T-shaped rod; 45. Fourth spring. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] This utility model provides the following technical solution:

[0030] Example 1, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 :

[0031] An abdominal pressure device for radiotherapy of breast cancer includes an upper support plate 1, a lower support plate 2, and two fixing seats 3. The two fixing seats 3 are arranged symmetrically about the central axis of the upper support plate 1. Each fixing seat 3 has a storage groove 4 on its top that fits the lower support plate 2. The two lower support plates 2 are slidably inserted into the cavities of adjacent storage grooves 4. Each fixing seat 3 has a first locking knob 5 connected to its opposite side for fixing the lower support plate 2. The first locking knob 5 allows locking after the height of the upper support plate 1 and the lower support plate 2 has been adjusted. A first cavity 25 is located near the top of the left lower support plate 2, and a first passage connecting the top of the left lower support plate 2 to the cavity 25 is located on its top. The inner cavity of the first through hole is rotatably connected to a connecting shaft 26, and the top end of the connecting shaft 26 is fixedly connected to the upper plate 1 of the support. The bottom end of the connecting shaft 26 is fixedly connected to a limit plate 27, and two first fixing holes 28 are provided on the connecting shaft 26. The left side of the lower plate 2 of the support on the left side is slidably connected to a first T-shaped rod 29, and the longest end of the first T-shaped rod 29 is inserted into the inner cavity of the first fixing hole 28 at the top. The outer wall of the first T-shaped rod 29 is fitted with a first spring 30, and the two ends of the first spring 30 are fixedly connected to the first T-shaped rod 29 and the lower plate 2 of the support respectively. Through the setting of the connecting shaft 26, the upper plate 1 of the support can move up and down on the top of the lower plate 2 of the left side, and can also rotate, so as to facilitate the patient to lie down and get up. The upper plate 1 of the support is provided with a pressing mechanism.

[0032] A second cavity 31 is provided near the top of the lower plate 2 of the right-side bracket, and a through groove is provided at the top of the lower plate 2 of the right-side bracket that communicates with the inner cavity of the second cavity 31. A matching connecting plate 32 slides through the inner cavity of the through groove, and a second fixing hole 33 is provided on the connecting plate 32. A second T-shaped rod 34 slides through the right side wall of the lower plate 2 of the right-side bracket, and the longest end of the second T-shaped rod 34 is inserted into the inner cavity of the second fixing hole 33. A second spring 35 is sleeved on the outer wall of the second T-shaped rod 34, and the two ends of the second spring 35 are fixedly connected to the lower plate 2 of the bracket and the second T-shaped rod 34, respectively. By inserting the connecting plate 32 into the inner cavity of the second cavity 31 and using the second T-shaped rod 34 to snap and fix the connecting plate 32, the stability of the upper plate 1 of the bracket is improved during use.

[0033] The compression mechanism includes an abdominal compression box 10, which is located directly below the upper plate 1 of the support. A second through hole is provided at the middle of the top of the abdominal compression box 10, and a threaded rod 9 is rotatably connected to the inner cavity of the second through hole. Two fixing rings 11 are fixedly fitted to the outer wall of the threaded rod 9, and the two fixing rings 11 are respectively fitted to the inner and outer sides of the abdominal compression box 10. A threaded sleeve 8 is provided at the middle of the upper plate 1 of the support, and the top end of the threaded rod 9 passes through the inner cavity of the threaded sleeve 8 and extends to the top of the upper plate 1 of the support. Several rockers 12 are fixedly connected to the outer wall of the threaded rod 9 near the top end. Two symmetrical square holes are provided on the upper plate 1 of the support, and square rods 16 that are adapted to them slide through the inner cavity of the square holes. The bottom ends of the two square rods 16 are fixedly connected to the top of the abdominal compression box 10. By rotating the rockers 12, the threaded rod 9 can be rotated, and the abdominal compression box 10 can be moved up and down under the setting of the threaded sleeve 8, thereby pressing the patient's abdomen and reducing the amplitude of abdominal rise and fall during the patient's breathing.

[0034] Each of the two mounting brackets 3 has an opening slot 6 at the bottom of its opposite side, and each of the two mounting brackets 3 has a second locking knob 7 connected to its opposite side. When the bracket is placed on the radiotherapy flatbed, the opening slot 6 can be snapped into the bed frame, and the mounting bracket 3 can be locked onto the bed frame by turning the second locking knob 7.

[0035] The top of the inner cavity of the opening groove 6 is provided with a groove 39, and an n-shaped plate 40 is slidably connected to the inner cavity of the groove 39. The inner cavity of the n-shaped plate 40 is provided with a roller 41, and a rotating shaft 42 is fixedly fixed through the roller 41. The two ends of the rotating shaft 42 are respectively rotatably connected to the left and right sides of the inner cavity of the n-shaped plate 40. Two vertically symmetrical third fixing holes 43 are provided on the side of the n-shaped plate 40 away from the center of the inner cavity of the opening groove 6. A third T-shaped rod 44 is slidably passed through the fixing seat 3, and the longest end of the third T-shaped rod 44 is inserted into the inner cavity of the third fixing hole 43 located at the top. A fourth spring 45 is sleeved on the outer wall of the third T-shaped rod 44, and the two ends of the fourth spring 45 are respectively fixedly connected to the third T-shaped rod 44 and the fixing seat 3. With the setting of the roller 41, the fixing seat 3 can roll on the bed frame, thereby facilitating flexible adjustment of the position of the support according to the patient's abdominal pressing position.

[0036] Working Principle: When using this invention, after the patient lies on the radiotherapy flat bed, the upper plate 1 of the support can be rotated to align the right side of the upper plate 1 with the lower plate 2 of the support on the right side, centered on the connecting shaft 26. After pressing the upper plate 1 downwards and inserting the connecting plate 32 into the inner cavity of the second cavity 31, the longest end of the second T-shaped rod 34 can be inserted into the inner cavity of the second fixing hole 33. Simultaneously, the longest end of the first T-shaped rod 29 can be inserted into the inner cavity of the top first fixing hole 28, thereby locking the upper plate 1 and the lower plate 2 together. Then, the position of the support is adjusted according to the position of the patient's abdomen after lying flat, and the position is flexibly adjusted by rolling the roller 41 horizontally on the bed frame. After adjustment, the first T-shaped rod 34 is pulled... The three T-shaped rods 44 disengage from the inner cavity of the third fixing hole 43 at the top, causing the rollers 41 to retract into the inner cavity of the groove 39, thereby making the top of the inner cavity of the opening groove 6 fit against the bed frame. Then, by turning the second locking knob 7, the fixing seat 3 can be fixed to the bed frame. By turning the rocker arm 12, the threaded rod 9 is rotated, and under the limit of the square rod 16, the abdominal pressure box 10 is moved vertically downward, thereby pressing on the patient's abdomen, reducing the amplitude of abdominal rise and fall during the patient's breathing, thereby reducing the range of chest tumor movement with breathing, and ultimately achieving the purpose of reducing the irradiation range of chest tumor radiotherapy, reducing the range of normal tissue cells irradiated during the entire radiotherapy process, avoiding large-scale damage to normal cells, and avoiding secondary harm to the patient.

[0037] Example 2, please refer to Figure 1 , Figure 2 , Figure 3 ,and Figure 7 :

[0038] A vent hole is provided at the center of the threaded rod 9, and a sealing ring 23 is slidably connected to the inner cavity of the vent hole near the top. An air supply hose 22 is fixedly connected to the top of the sealing ring 23. A limiting ring 24 is fitted on the outer wall of the air supply hose 22, and the outer wall of the limiting ring 24 is fixedly connected to the inner wall of the vent hole. A fixing cylinder 17 is provided on the top right side of the upper plate 1 of the bracket, and an air inlet is provided on the right side of the fixing cylinder 17. A dust filter 18 is provided in the inner cavity of the air inlet. From left to right, an air collecting hood 21 and a dust collection hood 22 are arranged in the inner cavity of the fixing cylinder 17. The heater 20 and the air intake fan 19 are connected to the air collection hood 21. The other end of the air supply hose 22 passes through the right side wall of the fixed cylinder 17 and is fixed to the air intake fan 19. The air intake fan 19 can draw outside air into the abdominal compression box 10, so that the air in the abdominal compression box 10 can flow, thereby avoiding the abdominal compression box 10 from sticking to the patient's skin and causing stuffiness and discomfort. The heater 20 can preheat the abdominal compression box 10 in cold weather, thereby avoiding the discomfort caused by the low temperature abdominal compression box 10 directly contacting the patient's skin.

[0039] The bottom of the abdominal pressure box 10 has several first exhaust holes 13 evenly distributed, and the bottom left and right sides of the abdominal pressure box 10 have several second exhaust holes 14, and the left and right sides of the abdominal pressure box 10 have third exhaust holes 15, so that the air inside the abdominal pressure box 10 can flow and blow onto the patient's skin, thereby maintaining a cool feeling in the patient's abdomen.

[0040] A T-shaped pressure plate 36 is slidably connected to the square rod 16, and a connecting ring 37 is sleeved and fixed on the outer wall of the square rod 16. A third spring 38 is sleeved on the outer wall of the square rod 16, and the two ends of the third spring 38 are fixedly connected to the connecting ring 37 and the T-shaped pressure plate 36 respectively. This can clamp and fix the medical sterile dressing on the lower surface of the abdominal pressure box 10, thereby avoiding bacterial transmission caused by the reusable abdominal pressure box 10 coming into contact with the skin of different patients.

[0041] Working Principle: Before applying pressure to the patient's abdomen using the abdominal pressure box 10, medical personnel can place a sterile medical dressing on the lower surface of the box 10 and press and fix both sides of the dressing onto the lower surfaces of the two T-shaped pressure plates 36. This facilitates the removal and replacement of the sterile dressing. Furthermore, when the abdominal pressure box 10 applies pressure to the patient's abdomen, it prevents bacterial transmission. In addition, in hot weather, the air intake fan 19 can be activated to draw in outside air filtered through the dust filter 18. The air is fed into the inner cavity of the abdominal pressure box 10. Through the setting of the first exhaust hole 13, the second exhaust hole 14 and the third exhaust hole 15, the air in the inner cavity of the abdominal pressure box 10 can circulate and blow cool air to the patient's abdomen, thereby keeping the abdominal skin cool and comfortable. In cold weather, the heater 20 can be activated at the same time to heat the air drawn into the inner cavity of the fixed cylinder 17 and then deliver it into the abdominal pressure box 10, thereby preheating the abdominal pressure box 10 and improving the warmth and comfort when the abdominal pressure box 10 comes into contact with the patient's skin.

[0042] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An abdominal pressure device for radiotherapy of breast cancer, comprising an upper support plate (1), a lower support plate (2), and a fixation base (3), characterized in that: Two fixing seats (3) are provided, and the two fixing seats (3) are arranged symmetrically about the central axis of the upper plate (1) of the bracket. The top of each fixing seat (3) is provided with a storage groove (4) that matches the lower plate (2) of the bracket. The two lower plates (2) of the bracket are slidably inserted into the inner cavity of the adjacent storage groove (4). The opposite sides of the two fixing seats (3) are connected to a first locking knob (5) for fixing the lower plate (2). The lower plate (2) on the left side is provided with a first cavity (25) near the top. The top of the lower plate (2) on the left side is provided with a first through hole that communicates with the inner cavity of the first cavity (25). The inner cavity of the first through hole is rotatably connected to a connecting shaft (26). The top of the connecting shaft (26) is connected to the upper plate of the bracket. The plate (1) is fixedly connected, and the bottom end of the connecting shaft (26) is fixedly connected to the limiting plate (27). The connecting shaft (26) has two first fixing holes (28) distributed vertically. The left side of the bracket lower plate (2) located on the left side is slidably connected to the first T-shaped rod (29). The longest end of the first T-shaped rod (29) is inserted into the inner cavity of the top first fixing hole (28). The outer wall of the first T-shaped rod (29) is fitted with a first spring (30). The two ends of the first spring (30) are fixedly connected to the first T-shaped rod (29) and the bracket lower plate (2) respectively. The bracket upper plate (1) is provided with a pressing mechanism. The bottom of the two fixed seats (3) on opposite sides is provided with an opening groove (6). The two fixed seats (3) on opposite sides are connected with a second locking knob (7).

2. The abdominal pressure device for radiotherapy of breast cancer as described in claim 1, characterized in that: A second cavity (31) is provided near the top of the lower plate (2) of the bracket on the right side, and a through groove is provided at the top of the lower plate (2) of the bracket on the right side, which communicates with the inner cavity of the second cavity (31). A connecting plate (32) adapted to it slides through the inner cavity of the through groove, and a second fixing hole (33) is provided on the connecting plate (32). A second T-shaped rod (34) slides through the right side wall of the lower plate (2) of the bracket on the right side, and the longest end of the second T-shaped rod (34) is inserted into the inner cavity of the second fixing hole (33). A second spring (35) is sleeved on the outer wall of the second T-shaped rod (34), and the two ends of the second spring (35) are fixedly connected to the lower plate (2) of the bracket and the second T-shaped rod (34) respectively.

3. The abdominal pressure device for radiotherapy of breast cancer as described in claim 1, characterized in that: The pressing mechanism includes an abdominal pressing box (10), which is located directly below the upper plate (1) of the support. A second through hole is provided at the middle of the top of the abdominal pressing box (10), and a threaded rod (9) is rotatably connected to the inner cavity of the second through hole. Two fixing rings (11) are sleeved and fixed on the outer wall of the threaded rod (9), and the two fixing rings (11) are respectively fitted to the inner and outer sides of the abdominal pressing box (10). The middle of the upper plate (1) of the support A threaded sleeve (8) is provided at the location, and the top end of the threaded rod (9) penetrates the inner cavity of the threaded sleeve (8) and extends to the top of the upper plate (1) of the support. Several rocker arms (12) are fixedly connected to the outer wall of the threaded rod (9) near the top end. Two symmetrical square holes are opened on the upper plate (1) of the support, and a matching square rod (16) slides through the inner cavity of the square hole. The bottom ends of the two square rods (16) are fixedly connected to the top of the pressure box (10).

4. An abdominal pressure device for radiotherapy of breast cancer as described in claim 3, characterized in that: A vent hole is provided at the center of the threaded rod (9), and a sealing ring (23) is slidably connected to the inner cavity of the vent hole near the top. An air supply hose (22) is fixedly connected to the top of the sealing ring (23). A limiting ring (24) is fitted on the outer wall of the air supply hose (22), and the outer wall of the limiting ring (24) is fixedly connected to the inner wall of the vent hole. A fixing cylinder (17) is provided on the top right side of the upper plate (1) of the bracket, and an air inlet is provided on the right side of the fixing cylinder (17). A dust filter (18) is provided in the inner cavity of the air inlet. From left to right, an air collecting hood (21), a heater (20), and an air intake fan (19) are arranged in the inner cavity of the fixing cylinder (17). The other end of the air supply hose (22) passes through the right side wall of the fixing cylinder (17) and is connected and fixed to the air collecting hood (21).

5. An abdominal pressure device for radiotherapy of breast cancer as described in claim 3, characterized in that: The bottom of the abdominal compression box (10) is provided with a number of first exhaust holes (13), and the bottom left and right sides of the abdominal compression box (10) are provided with a number of second exhaust holes (14), and the left and right sides of the abdominal compression box (10) are provided with third exhaust holes (15).

6. An abdominal pressure device for radiotherapy of breast cancer as described in claim 3, characterized in that: A T-shaped pressure plate (36) is slidably connected to the square rod (16), and a connecting ring (37) is sleeved and fixed on the outer wall of the square rod (16). A third spring (38) is sleeved on the outer wall of the square rod (16), and the two ends of the third spring (38) are fixedly connected to the connecting ring (37) and the T-shaped pressure plate (36) respectively.

7. An abdominal pressure device for radiotherapy of breast cancer as described in claim 1, characterized in that: The top of the inner cavity of the opening groove (6) is provided with a groove (39), and an n-shaped plate (40) is slidably connected to the inner cavity of the groove (39). The inner cavity of the n-shaped plate (40) is provided with a roller (41), and a rotating shaft (42) is fixed through the roller (41). The two ends of the rotating shaft (42) are rotatably connected to the left and right sides of the inner cavity of the n-shaped plate (40) respectively. Two vertically symmetrical third fixing holes (43) are opened on the side of the n-shaped plate (40) away from the center of the inner cavity of the opening groove (6). A third T-shaped rod (44) is slidably passed through the fixing seat (3), and the longest end of the third T-shaped rod (44) is inserted into the inner cavity of the third fixing hole (43) located at the top. A fourth spring (45) is sleeved on the outer wall of the third T-shaped rod (44), and the two ends of the fourth spring (45) are fixedly connected to the third T-shaped rod (44) and the fixing seat (3) respectively.

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