Multi-angle positioning support device for tumor radiotherapy

Abstract

The invention discloses a multi-angle positioning support device for tumor radiotherapy, and relates to the technical field of tumor radiotherapy. A multi-angle positioning support device for tumor radiotherapy comprises a treatment bed, a wiring pipe is fixedly installed on the top of the treatment bed, a connecting pipe is fixedly installed on one side of the wiring pipe, and a movable supporting rod is movably connected into the connecting pipe in a sleeved mode. By means of the adjusting process that a long push rod pushes an attaching piston plate and a limiting disc B to integrally move downwards and an inner pipe rebounds and accumulates force, the sudden change of the height of the cushion caused by sudden locking of a gear can be avoided through gas transmission and reset gas supplementing mechanisms of parts such as an inner push rod, a gas extrusion plug and a one-way gas supplementing pipe A, and the physiological curvature of the spine is prevented from being damaged; particularly, stimulation to a spinal post-operation patient can be reduced, the risk of aggravation of waist and back pain of the patient is reduced, and a stable and safe supporting environment is created for the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of tumor radiotherapy, in particular to a multi-angle positioning bracket device for tumor radiotherapy. Background Art

[0002] In cancer treatment, different types of specialized beds play an irreplaceable role, primarily driven by the following core needs: After chemotherapy or radiotherapy, patients are prone to bone marrow suppression, leading to severe neutropenia and a sharp decline in immunity. Laminar flow beds create a localized sterile environment through efficient air purification technology, significantly reducing the risk of respiratory and skin infections, and helping patients safely navigate this period of immune vulnerability. Radiotherapy requires precise focusing of high-energy radiation on the tumor target, with errors controlled to the millimeter level. Traditional three-dimensional treatment beds only support translation, while six-dimensional treatment beds enable fine adjustment in six degrees of freedom, including rotation. Combined with image-guided technologies such as CBCT scans, they correct patient position deviations in real time to avoid accidental injury to normal tissue. During preoperative positioning, fixation devices such as thermoplastic film and vacuum cushions also rely on the treatment bed for position repeatability. Spinal protection: Postoperative cancer patients, especially those undergoing spinal surgery, require a rigid bed to provide uniform support, maintain the spinal curvature, and prevent low back complications. The operating table is multi-directionally adjustable in height and tilt angle to accommodate positioning requirements for intraoperative procedures and postoperative care, reducing the risk of pressure ulcers.

[0003] The above-mentioned mechanical adjustment may cause the gears to suddenly lock, resulting in a sudden change in the height of the cushion, which can easily destroy the physiological curvature of the spine. Especially for patients after spinal surgery, it may aggravate back pain. Although a hard bed can provide support, it cannot adapt to the spinal curvature of different patients through flexible inflation like a pneumatic device, increasing the risk of pressure sores. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-angle positioning bracket device for tumor radiotherapy, which can slowly increase or decrease the height through air pressure adjustment, avoiding excessive adjustment to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-angle positioning support device for tumor radiotherapy, comprising a treatment bed, a wiring tube fixedly installed on the top of the treatment bed, a connecting tube fixedly installed on one side of the wiring tube, a movable support rod movably sleeved inside the connecting tube, a head and neck support fixedly installed on the bottom of one side of the movable support rod, an air pressure regulating assembly fixedly installed inside the wiring tube, a support pad body placed on the top of the wiring tube, an angle adjustment mechanism provided on the side of the support pad body, and a rubber wrapping layer wrapped around the top of the support pad body.

[0006] Preferably, the interior of the air pressure regulating assembly includes a main air pressure pipe, a collar, a gas diversion block, an abdominal air supply pipe, a shoulder air supply pipe and a lower limb air supply pipe. A wiring groove is opened inside the wiring pipe, and the main air pressure pipe and the collar are fixedly installed on the surface of the wiring pipe. The main air pressure pipe and the collar pass through the surface of the gas diversion block at one end close to the wiring groove and extend to the interior of the gas diversion block. The gas diversion block is fixedly installed inside the wiring groove, and the abdominal air supply pipe is fixedly installed on the top of the gas diversion block. The lower limb air supply pipe and the shoulder air supply pipe are fixedly installed on both sides of the gas diversion block. The flow diameter ratio range of the abdominal air supply pipe, the shoulder air supply pipe and the lower limb air supply pipe is 10:3:2.

[0007] Preferably, the interior of the support pad main body includes a support pad side unit and a support pad main unit; the interior of the support pad main unit includes an abdominal support airbag, a shoulder support airbag, and a lower limb support airbag, the top of the abdominal air supply tube is fixedly installed with the abdominal support airbag, the top of the shoulder air supply tube is fixedly connected to the shoulder support airbag, and the top of the lower limb air supply tube is fixedly connected to the lower limb support airbag; the interior of the support pad side unit includes a side adjustment airbag and a side auxiliary airbag, and the side adjustment airbag and the side auxiliary airbag are fixedly installed on both sides of the top of the abdominal support airbag, the shoulder support airbag, and the lower limb support airbag.

[0008] Preferably, the interior of the angle adjustment mechanism includes a main adjustment tube, a middle connecting tube, a left connecting tube, an external pressure relief tube and a right connecting tube, and the side adjustment airbags and the side auxiliary airbags are distributed in a longitudinal array of three, the main adjustment tube is fixedly installed on the outer walls of the middle side adjustment airbag and the side auxiliary airbag, the top of the main adjustment tube is fixedly connected with the middle connecting tube, the outer wall of the middle connecting tube is fixedly connected to the outer walls of the middle side adjustment airbag and the side auxiliary airbag, the left connecting tube and the right connecting tube are fixedly installed on both sides of the main adjustment tube, the left connecting tube is fixedly connected to the outer walls of the left side adjustment airbag and the side auxiliary airbag, the right connecting tube is fixedly connected to the right side adjustment airbag and the side auxiliary airbag, and external pressure relief tubes are fixedly installed on the outer walls of the three side adjustment airbags and side auxiliary airbags.

[0009] Preferably, the main air pressure tube is movably sleeved with a piston rod, and a push-pull handle is fixedly installed on the top of the piston rod, and a pressure relief channel is opened on the side of the main air pressure tube, and a gas one-way suction pipe is fixedly installed on the bottom side of the main air pressure tube away from the piston rod, and the piston rod is located inside the gas diversion block and is fixedly installed with a pressure relief push pipe, and the end of the pressure relief push pipe away from the piston rod is movably sleeved with a pressure relief component, and the bottom of the pressure relief component is movably sleeved with the internal abdominal air supply pipe, shoulder air supply pipe and lower limb air supply pipe, and the abdominal air supply pipe, shoulder air supply pipe and lower limb air supply pipe are fixedly connected to a gas collection pipe at one end away from the support pad main body, and a first gas one-way delivery head is fixedly installed on the bottom of the gas collection pipe, a one-way abdominal air supply connecting pipe is fixedly installed on one side of the abdominal air supply pipe, and a one-way The shoulder air supply pipe, the lower limb air supply pipe is fixedly installed with a one-way lower limb air supply pipe at the bottom of one side close to the gas collecting pipe, the first gas one-way delivery head, the one-way shoulder air supply pipe, the one-way abdomen air supply pipe and the one-way lower limb air supply pipe are distributed in a semicircle, the internal movable sleeve of the main air pressure pipe is connected with a gas transmission pipe, the gas transmission pipe is fixedly sleeved with a blocking ring at one end close to the main air pressure pipe, the top of the blocking ring is fitted with a spring A, the outer wall of the spring A is wrapped around the outer wall of the gas transmission pipe, and the top is against the outer wall of one end of the main air pressure pipe, the bottom of the end of the gas transmission pipe away from the main air pressure pipe is movably sleeved with a circular box, the circumferential outer wall of the circular box is fixedly installed with a transmission rod, the outer wall of the transmission rod is wrapped with a spring B, the end of the transmission rod away from the circular box is movably sleeved with a card joint, and the circular box realizes linkage adjustment or one-way adjustment through a rotating mechanism.

[0010] Preferably, the pressure relief component includes a total pressure relief pipe, a side pressure relief pipe, a spring D, a side sealing plate and an abdominal sealing plate, and an abdominal pressure relief connector. The pressure relief push pipe is movably connected to the total pressure relief pipe through a connecting pipe. The two ends of the total pressure relief pipe are fixedly installed with side pressure relief pipes. The outer wall of the side pressure relief pipe is movably connected to the spring D. The bottom of the side pressure relief pipe extends to the inside of the shoulder air supply pipe and the lower limb air supply pipe. The bottom of the side pressure relief pipe is fixedly connected to the side sealing plate, and the side pressure relief pipe and the side sealing plate are both located inside the shoulder air supply pipe and the lower limb air supply pipe. An air inlet A is provided at the top of the sealing plate, and the air inlet A is located at both ends of the side pressure relief pipe, and the air inlet A forms a friction connection with the sleeve joint of the shoulder air supply pipe and the lower limb air supply pipe. The top of the abdominal pressure relief connector is fixedly connected to the arc of the total pressure relief pipe, and the bottom of the abdominal pressure relief connector is fixedly installed with an abdominal sealing plate, which is located inside the abdominal air supply pipe, and an air inlet B is opened at the top of the abdominal sealing plate, and the air inlet B is located at both ends of the bottom of the abdominal pressure relief connector, and the air inlet B forms a friction connection with the sleeve joint of the abdominal air supply pipe.

[0011] Preferably, the rotating mechanism includes a rotating rod, a transmission gear, and a linkage gear. The linkage gear is fixedly installed on the top of the circular box, the side of the linkage gear is engaged with the transmission gear, the rotating rod is fixedly installed on the top of the transmission gear, and the end of the rotating rod away from the transmission gear is movably connected to the linkage gear.

[0012] Preferably, the rotating mechanism includes a long push rod, a fitting piston plate, a limit plate B, a bottom tube, an internal tube, a spring H, a pneumatic transmission box, an internal push rod, a gas extrusion plug, a one-way air supply pipe A, a one-way exhaust pipe, a rotating drive rod and a gas toggle leaf, a limit ring, the inner part of the piston rod is movably sleeved with the long push rod, the bottom of the long push rod is fixedly installed with the fitting piston plate, the bottom of the piston rod is fixedly installed with the limit plate B, the bottom of the limit plate B is fixedly installed with the bottom tube, the inner part of the bottom tube is movably sleeved with the internal tube, the outer wall of the internal tube is movably sleeved with the spring H, the bottom of the internal tube is movably sleeved with the circular box, and the bottom of the circular box is through The rotary drive rod is movably connected to the pneumatic transmission box, and the other side of the pneumatic transmission box is movably connected to the internal push rod. The top of the internal push rod is fixedly connected to the outer wall of the bottom tube, and a gas extrusion plug is fixedly installed on the bottom of the internal push rod. The gas extrusion plug and the other side of the pneumatic transmission box are movably connected. A horizontal plate is fixedly installed in the middle of the pneumatic transmission box. A one-way air supply pipe A is fixedly installed on the side of the pneumatic transmission box away from the horizontal plate, and a one-way exhaust pipe is fixedly installed on the inside of the horizontal plate. A gas shifting leaf is arranged on the side of the pneumatic transmission box away from the one-way air supply pipe A, and the outer wall of the gas shifting leaf is fixedly connected to the circumferential outer wall of the rotary drive rod.

[0013] Preferably, a trapezoidal clamping groove is provided on the top of the clamping joint, a limit plate A is fixedly installed on the top of the transmission rod, the outer wall of the limit plate A is movably sleeved with the interior of the clamping joint, and the trapezoidal clamping groove is an equilateral trapezoid as a whole.

[0014] Preferably, local pressure relief holes are opened on both sides of the bottom of the inner cavity of the external pressure relief pipe, and a pressure relief guide rod is fixedly installed on the top of the local pressure relief hole. A pressure relief spring is movably sleeved on the outer wall of the pressure relief guide rod, and a sealing slider is movably sleeved on the top of the pressure relief guide rod. A pressure relief operation button is fixedly installed on the top of the sealing slider, and the top of the pressure relief operation button is clamped with a limiting buckle.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This multi-angle positioning support device for tumor radiotherapy uses a long push rod to push the fitting piston plate and the limit plate B downward as a whole, and adjusts the internal tube to rebound and store force. Through the gas transmission and reset gas supply mechanism of parts such as the internal push rod, gas extrusion plug, and one-way gas supply tube A, it can avoid sudden changes in cushion height caused by sudden locking of gears, prevent damage to the physiological curvature of the spine, especially reduce stimulation to patients after spinal surgery, reduce the risk of worsening low back pain, and create a stable and safe support environment for patients.

[0016] 2. This multi-angle positioning bracket device for tumor radiotherapy achieves flexible adjustment through the coordinated action of parts such as the limit plate B, the bottom tube, and the internal tube. It not only retains the support similar to that of a hard bed, but can also adapt to the spinal curvature of different patients through the linkage of parts such as the rotating drive rod and the gas-activated leaves, just like a pneumatic device. The support effect is guaranteed in steps such as the rotation and clamping of the circular box, while reducing local compression and the risk of pressure sores. It takes into account both support and adaptability, and improves the comfort and safety of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the overall structure of the main support point in the present invention; Figure 3 This is a schematic diagram of the overall structure of the top of the gas diversion block in the present invention; Figure 4 Schematic diagram of the overall structure of the gas diversion block in the present invention; Figure 5 This is a schematic diagram of the two-dimensional structure of the gas diversion block in the present invention from a top view; Figure 6 This is a schematic diagram of the overall structure of the circular box connection in the present invention; Figure 7 for Figure 6 Schematic diagram of the enlarged structure at A in the middle; Figure 8 A schematic diagram of the two-dimensional internal structure of the card joint and the transmission rod in the present invention; Figure 9 This is a schematic diagram of the interior of the external pressure relief pipe in the present invention; Figure 10 This is a schematic diagram of the overall internal structure of the main regulating tube in the present invention; Figure 11 This is a schematic diagram of the overall structure of the bottom tube in the present invention.

[0018] In the figure: 1. Treatment bed; 2. Wiring pipe; 3. Connecting pipe; 4. Wiring trough; 5. Movable support rod; 6. Head and neck support; 7. Air pressure adjustment assembly; 8. Support cushion body; 81. Support cushion side unit; 82. Support cushion main unit; 821. Abdominal support airbag; 822. Shoulder support airbag; 823. Lower limb support airbag; 811. Side adjustment airbag; 812. Side auxiliary airbag; 9. Angle adjustment mechanism; 91. Main adjustment pipe; 92. Middle connecting pipe; 93. Left connecting pipe; 94 , external pressure relief pipe; 95, right connecting pipe; 10, rotating rod; 11, transmission gear; 12, linkage gear; 13, round box; 18, rubber wrapping layer; 71, main air pressure pipe; 72, collar; 73, gas diversion block; 74, abdominal air supply pipe; 75, shoulder air supply pipe; 76, lower limb air supply pipe; 77, piston rod; 78, push-pull handle; 79, pressure relief channel; 710, gas one-way suction pipe; 711, pressure relief push pipe; 712, gas collection pipe; 713, first gas one-way delivery head; 7 14. Gas transmission tube; 715. Blocking ring; 716. Spring A; 717. Transmission rod; 718. Spring B; 719. Adapter; 720. Trapezoidal adapter groove; 721. Limiting plate A; 722. Local pressure relief hole; 723. Pressure relief guide rod; 724. Pressure relief spring; 725. Sealing slider; 726. Pressure relief operation button; 727. Limiting buckle; 741. One-way abdominal air supply pipe; 751. One-way shoulder air supply pipe; 761. One-way lower limb air supply pipe; 742. Abdominal pressure relief pipe Connectors; 14, main pressure relief pipe; 141, side pressure relief pipe; 143, spring D; 144, side sealing plate; 145, abdominal sealing plate; 96, long push rod; 97, fitting piston plate; 98, limit plate B; 99, bottom pipe; 910, internal pipe; 911, spring H; 912, pneumatic transmission box; 913, internal push rod; 914, gas extrusion plug; 915, one-way air supply pipe A; 916, one-way exhaust pipe; 917, rotating drive rod; 918, gas toggle blade; 920, limit ring. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1-10The present invention provides a technical solution for a multi-angle positioning support device for tumor radiotherapy: comprising a treatment bed 1, a wiring tube 2 is fixedly installed on the top of the treatment bed 1, a connecting tube 3 is fixedly installed on one side of the wiring tube 2, a movable support rod 5 is movably sleeved inside the connecting tube 3, a head and neck support member 6 is fixedly installed on the bottom of one side of the movable support rod 5, an air pressure regulating component 7 is fixedly installed inside the wiring tube 2, a support pad body 8 is placed on the top of the wiring tube 2, an angle adjustment mechanism 9 is provided on the side of the support pad body 8, and the top of the support pad body 8 is wrapped with a rubber wrapping layer 18. During operation, the patient can lie flat on the top of the rubber wrapping layer 18. At this time, the head and neck support 6 can provide support for the head and neck. When the abdomen needs to be raised, the air pressure adjustment component 7 is pressed, and the air pressure can be used to expand the support pad body 8 and slowly rise. When the abdomen or shoulders need to be raised, the interior of the air pressure adjustment component 7 can be adjusted so that air can be supplied to the abdomen or shoulders separately. This ensures flexible adjustment while ensuring that each unit can be adjusted independently. In addition, when angle adjustment is required, by pressing the angle adjustment mechanism 9, the angle adjustment mechanism 9 can adjust the height of the two ends, making it convenient for patients to maintain a certain tilt angle for treatment, thereby improving the efficiency of use.

[0021] See also Figure 1-3 The interior of the air pressure regulating assembly 7 includes a main air pressure pipe 71, a collar 72, a gas diversion block 73, an abdominal air supply pipe 74, a shoulder air supply pipe 75 and a lower limb air supply pipe 76. A wiring groove 4 is opened inside the wiring pipe 2. The main air pressure pipe 71 and the collar 72 are fixedly installed on the surface of the wiring pipe 2. The end of the main air pressure pipe 71 and the collar 72 close to the wiring groove 4 passes through the surface of the gas diversion block 73 and extends to the interior of the gas diversion block 73. The gas diversion block 73 is fixedly installed inside the wiring groove 4. The abdominal air supply pipe 74 is fixedly installed on the top of the gas diversion block 73. The lower limb air supply pipe 76 and the shoulder air supply pipe 75 are fixedly installed on both sides of the gas diversion block 73. The flow diameter ratio range of the abdominal air supply pipe 74, the shoulder air supply pipe 75 and the lower limb air supply pipe 76 is 10:3:2. The main air pressure pipe 71 can be used to transport external air into the gas diversion block 73, and then the internal gas is transported into the abdominal air supply pipe 74, the shoulder air supply pipe 75 and the lower limb air supply pipe 76 through the gas diversion block 73. The flow activity ratio is 10:3:2. See also Figure 2The interior of the support pad body 8 includes a support pad side unit 81 and a support pad main unit; the interior of the support pad main unit includes an abdominal support airbag 821, a shoulder support airbag 822, and a lower limb support airbag 823. The top of the abdominal air supply pipe 74 is fixedly installed with the abdominal support airbag 821, the top of the shoulder air supply pipe 75 is fixedly connected to the shoulder support airbag 822, and the top of the lower limb air supply pipe 76 is fixedly connected to the lower limb support airbag 823; the interior of the support pad side unit 81 includes a side adjustment airbag 811 and a side auxiliary airbag 812. The side adjustment airbag 811 and the side auxiliary airbag 812 are fixedly installed on both sides of the top of the abdominal support airbag 821, the shoulder support airbag 822, and the lower limb support airbag 823. According to the above ratio, the abdominal air supply tube 74 with the largest flow caliber will make the abdominal support airbag 821 expand first, supporting the abdomen, combined with the flexible bulge of the rubber wrapping layer 18 to stabilize the center of gravity, reduce shaking and compensatory force, and the shoulder support airbag 822 connected to the shoulder air supply tube 75 will expand next, supplementing the shoulder support with adaptive design to avoid shoulder and neck strain and scoliosis, and cooperate with the abdominal support to stabilize the upper body. The lower limb support airbag 823 will expand last to complete the lower limb support, forming an orderly support system from the core to the limbs as a whole.

[0022] See also Figure 1-2 The interior of the angle adjustment mechanism 9 includes a main adjustment tube 91, a middle connecting tube 92, a left connecting tube 93, an external pressure relief tube 94 and a right connecting tube 95. The side adjustment airbags 811 and the side auxiliary airbags 812 are arranged in a longitudinal array in three. The outer walls of the middle side adjustment airbags 811 and the side auxiliary airbags 812 are fixedly installed with the main adjustment tube 91. The top of the main adjustment tube 91 is fixedly connected with the middle connecting tube 92. The outer wall of the middle connecting tube 92 is connected to the side adjustment airbags in the middle. 811 and the outer walls of the side auxiliary airbag 812 are fixedly connected, and a left connecting tube 93 and a right connecting tube 95 are fixedly installed on both sides of the main regulating tube 91. The left connecting tube 93 is fixedly connected to the outer walls of the left side regulating airbag 811 and the side auxiliary airbag 812, and the right connecting tube 95 is fixedly connected to the right side regulating airbag 811 and the side auxiliary airbag 812. The outer walls of the three side regulating airbags 811 and the side auxiliary airbag 812 are fixedly installed with an external pressure relief tube 94. It should be noted that the main regulating tube 91 inside the angle regulating mechanism 9 has the same internal structure as the gas diverter block 73. When the angle needs to be adjusted, by pressing the angle regulating mechanism 9, the angle regulating mechanism 9 can adjust the height of both ends, so that the patient can maintain a certain tilt angle for treatment. Specifically, when the angle needs to be adjusted during operation, the gas diverter block 73 provided inside the main regulating tube 91 can be pulled. At this time, the external gas will be transported into the interior of the main regulating tube 91. After that, the gas will be transported to the three side regulating airbags 8 on one side through the middle connecting tube 92, the left connecting tube 93 and the right connecting tube 95, respectively, as in the above embodiment. 11 and expand it, the middle side adjustment airbag 811 bulges first, followed by the left side, and finally the right side forms a support, thus complying with the above-mentioned expansion sequence. During the angle adjustment process, the patient's comfort can be guaranteed, thereby improving work efficiency. At this time, the side adjustment airbag 811 will be higher than the side auxiliary airbag 812, thereby forming an oblique angle state, which is convenient for lateral treatment; when the side auxiliary airbag 812 needs to be higher than the height of the side adjustment airbag 811, the angle adjustment mechanism 9 inside the side auxiliary airbag 812 can be pulled so that the height of the side auxiliary airbag 812 can be higher than the side adjustment airbag 811. At this time, angle adjustment can be achieved, thereby improving the use efficiency.

[0023] See also Figure 4-6The main air pressure tube 71 is internally movably connected to a piston rod 77, and a push-pull handle 78 is fixedly installed on the top of the piston rod 77. A pressure relief channel 79 is opened on the side of the main air pressure tube 71. A gas one-way suction pipe 710 is fixedly installed on the bottom side of the main air pressure tube 71 away from the piston rod 77. The piston rod 77 is located inside the gas diversion block 73 and is fixedly installed with a pressure relief push pipe 711. The end of the pressure relief push pipe 711 away from the piston rod 77 is movably connected to a pressure relief component. The bottom of the pressure relief component and the abdominal air supply pipe are connected. 74, the shoulder air supply pipe 75, and the lower limb air supply pipe 76 are internally connected in a movable manner. The ends of the abdominal air supply pipe 74, the shoulder air supply pipe 75, and the lower limb air supply pipe 76 away from the support pad body 8 are fixedly connected to the gas collection pipe 712. The bottom of the gas collection pipe 712 is fixedly installed with a first gas one-way delivery head 713. One side of the abdominal air supply pipe 74 is fixedly installed with a one-way abdominal air supply pipe 741. The side of the shoulder air supply pipe 75 close to the gas collection pipe 712 is fixedly installed with a one-way shoulder air supply pipe 751. A one-way lower limb air supply pipe 761 is fixedly installed at the bottom of the lower limb air supply pipe 76 near the gas collection pipe 712. The first one-way gas delivery head 713, the one-way shoulder air supply pipe 751, the one-way abdomen air supply pipe 741 and the one-way lower limb air supply pipe 761 are distributed in a semicircle. The internal movable sleeve of the main air pressure pipe 71 is connected to the gas transmission pipe 714. The end of the gas transmission pipe 714 near the main air pressure pipe 71 is fixedly connected to a blocking ring 715. The top of the blocking ring 715 is fitted with a spring A. 716, the outer wall of spring A716 is wrapped around the outer wall of the gas transmission tube 714, and the top is against the outer wall of one end of the main air pressure tube 71. The bottom of the end of the gas transmission tube 714 away from the main air pressure tube 71 is movably connected to the circular box 13. The circumferential outer wall of the circular box 13 is fixedly installed with a transmission rod 717. The outer wall of the transmission rod 717 is wrapped with a spring B718. The end of the transmission rod 717 away from the circular box 13 is movably connected to a card joint 719. The circular box 13 realizes linkage adjustment or unidirectional adjustment through a rotating mechanism. When working, the push-pull handle 78 and the piston rod 77 can be repeatedly pulled and pushed, so that the piston fixedly connected to the outer wall of the piston rod 77 can move back and forth inside the main air pressure tube 71. When the piston moves backward, the external air will be sucked into the main air pressure tube 71 through the gas one-way suction pipe 710; when the piston moves forward, the air sucked into the main air pressure tube 71 will be squeezed and transported into the interior of the circular box 13 through the gas transmission pipe 714. Then, the transmission rod 717 and the card joint 719 fixedly connected to the circular box 13 will transport the air into the first gas one-way delivery head 713, and then discharge it into the interior of the gas collection pipe 712 through the first gas one-way delivery head 713. The gas collection pipe 712 is used to transport the internal air into the abdomen air supply pipe 74, the shoulder air supply pipe 75 and the lower limb air supply pipe 76 respectively, thereby realizing linkage adjustment. When the overall height needs to be lowered during work, the main air pressure tube 71 can be pressed. At this time, the pressure relief push pipe 711 fixedly connected to the outer wall of the main air pressure tube 71 will push The dynamic pressure relief part moves forward, and during the movement, the interior of the abdominal air supply pipe 74, the shoulder air supply pipe 75 and the lower limb air supply pipe 76 are opened. At this time, the internal gas enters the interior of the pressure relief push pipe 711 through the pressure relief part, and then is discharged through the interior of the pressure relief channel 79. When discharged, the support pad main unit connected at the top will lower its height, thereby realizing linkage adjustment. When it is necessary to switch from linkage adjustment to one-way adjustment during operation, the rotating mechanism can be rotated. At this time, the circular box 13 can be driven to rotate 360 ​​degrees. During the rotation, the clamping joint 719 can be separated from the contact with the first gas one-way delivery head 713. The clamping joint 719 can be clamped with any one of the one-way lower limb air supply pipe 761, the one-way shoulder air supply pipe 751, and the one-way abdominal air supply pipe 741 within the movement range of the circular box 13. When clamped, a separate air supply can be formed for the pipes connected by the above three components, so that they can be adjusted separately to improve work efficiency. A clicking sound will be generated during the clamping process to remind the staff that the clamping is successful.

[0024] See also Figure 7The pressure relief parts include a total pressure relief pipe 14, a side pressure relief pipe 141, a spring D143, a side sealing plate 144 and an abdominal sealing plate 145, and an abdominal pressure relief connector 742. The pressure relief push pipe 711 is movably connected to the total pressure relief pipe 14 through a connecting pipe. The side pressure relief pipes 141 are fixedly installed at both ends of the total pressure relief pipe 14. The outer wall of the side pressure relief pipe 141 is movably connected to the spring D143. The bottom of the side pressure relief pipe 141 extends to the inside of the shoulder air supply pipe 75 and the lower limb air supply pipe 76. The bottom of the side pressure relief pipe 141 is fixedly connected to the side sealing plate 144, and the side pressure relief pipe 141 and the side sealing plate 144 are both located inside the shoulder air supply pipe 75 and the lower limb air supply pipe 76. The top of the side sealing plate 144 is provided with an air inlet A. The air inlet A is located At both ends of the side pressure relief pipe 141, the air inlet A forms a friction connection with the sleeve joint of the shoulder air supply pipe 75 and the lower limb air supply pipe 76. The top of the abdominal pressure relief connector 742 is fixedly connected to the arc of the total pressure relief pipe 14. The bottom of the abdominal pressure relief connector 742 is fixedly installed with an abdominal sealing plate 145. The abdominal sealing plate 145 is located inside the abdominal air supply pipe 74, and an air inlet B is opened on the top of the abdominal sealing plate 145. The air inlet B is located at both ends of the bottom of the abdominal pressure relief connector 742, and the air inlet B forms a friction connection with the sleeve joint of the abdominal air supply pipe 74. The specific pressure relief steps are: push the main air pressure tube 71 forward, then the main air pressure tube 71 will move forward along the outer wall of the gas transmission tube 714, and during the forward movement, the main air pressure tube 71 will form a preliminary squeeze on the spring A716 wrapped around the outer wall of the gas transmission tube 714; in the process of moving forward, the pressure relief push tube 711 fixedly connected to the outer wall of the main air pressure tube 71 will push the total pressure relief tube 14 to move downward, and at this time the abdominal pressure relief connector 742 and the side pressure relief tube 141 fixedly connected to the two ends and the arc section of the total pressure relief tube 14 will extend to the inside of the abdominal air supply tube 74, the shoulder air supply tube 75 and the lower limb air supply tube 76 respectively, and during the extension process, the air inlet A and the air inlet B The gas will enter the interior of the abdominal air supply pipe 74, the shoulder air supply pipe 75 and the lower limb air supply pipe 76 respectively from the connection point. At that time, the gas inside the above three parts will be transported into the interior of the main pressure relief pipe 14 through the side pressure relief pipe 141 and the abdominal pressure relief connector 742, and then transported into the interior of the pressure relief push pipe 711 by the main pressure relief pipe 14, and discharged through the pressure relief channel 79 connected to the pressure relief push pipe 711, so that the overall height of the support pad main unit can be slowly lowered, achieving a linked lowering.

[0025] See also Figure 4 The rotating mechanism includes a rotating rod 10, a transmission gear 11, and a linkage gear 12. The linkage gear 12 is fixedly installed on the top of the circular box 13. The side of the linkage gear 12 is meshed with the transmission gear 11. The rotating rod 10 is fixed on the top of the transmission gear 11. The end of the rotating rod 10 away from the transmission gear 11 is movably sleeved with the linkage gear 12. When it is necessary to switch the linkage adjustment to one-way adjustment during operation, the following specific operations can be performed: hold the entire rotating rod 10 and rotate it. During the rotation, the transmission gear 11 fixed to the rotating rod 10 will rotate. When the transmission gear 11 rotates, the linkage gear 12 engaged on the side will rotate. When the linkage gear 12 rotates, the circular box 13 fixed to the bottom will also rotate. When the circular box 13 rotates, the linkage can be switched to one-way adjustment.

[0026] See also Figure 10-11 The rotating mechanism includes a long push rod 96, a fitting piston plate 97, a limit plate B98, a bottom tube 99, an internal tube 910, a spring H911, a pneumatic transmission box 912, an internal push rod 913, a gas extrusion plug 914, a one-way air supply pipe A915, a one-way exhaust pipe 916, a rotary drive rod 917 and a gas toggle leaf 918, a limit ring 920, the inner part of the piston rod 77 is movably sleeved with the long push rod 96, the bottom of the long push rod 96 is fixedly installed with the fitting piston plate 97, the bottom of the piston rod 77 is fixedly installed with the limit plate B98, the bottom of the limit plate B98 is fixedly installed with the bottom of the bottom tube 99, the inner part of the bottom tube 99 is movably sleeved with the internal tube 910, the outer wall of the internal tube 910 is movably sleeved with the spring H911, and the bottom of the internal tube 910 is movably sleeved with the circular box 13, the circular box The bottom of 13 is movably connected to the pneumatic transmission box 912 through the rotating drive rod 917, and the other side of the pneumatic transmission box 912 is movably connected to the internal push rod 913. The top of the internal push rod 913 is fixedly connected to the outer wall of the bottom tube 99. The bottom of the internal push rod 913 is fixedly installed with a gas extrusion plug 914. The gas extrusion plug 914 and the other side of the pneumatic transmission box 912 are movably connected. The middle part of the pneumatic transmission box 912 is fixedly installed with a horizontal plate. A one-way air supply pipe A915 is fixedly installed on the side of the pneumatic transmission box 912 away from the horizontal plate. A one-way exhaust pipe 916 is fixedly installed on the inside of the horizontal plate. A gas shifting leaf 918 is provided on the side of the pneumatic transmission box 912 away from the one-way air supply pipe A915. The outer wall of the gas shifting leaf 918 is fixedly connected to the circumferential outer wall of the rotating drive rod 917. The previous embodiment uses gears for rotation adjustment, but the gears are easily damaged when rotated for a long time. Based on the above embodiment, this embodiment uses air pressure for rotation adjustment. The specific steps are as follows: The inner part of the piston rod 77 is fixedly installed on the upper limit plate B98, and then the bottom tube 99 is fixedly installed on the bottom of the limit plate B98, and the bottom tube 99 is movably connected with the inner tube 910. At that time, the circular box 13 is movably installed on the bottom of the inner tube 910. When the circular box 13 needs to be rotated, the piston plate 97 can be movably connected on the top of the limit plate B98, and the long push rod 96 is fixedly connected to the top of the piston plate 97. When the circular box 13 needs to be rotated, the long push rod 96 is pushed forward to make the bottom of the piston plate 97 fit the top of the limit plate B98. The gas stored in the bottom of the gas extrusion plug 914 fixedly connected to the bottom of the internal push rod 913 squeezes the gas stored in the air pressure transmission box 912, and the gas is transported from the inside of the one-way exhaust pipe 916 to the other side of the air pressure transmission box 912; when entering the other side, the gas will move the gas moving leaf 918 to rotate, and the outer wall of the gas moving leaf 918 is fixed to the bottom of the internal push rod 913 during the rotation. The rotating drive rod 917 fixedly connected will rotate accordingly, and when the rotating drive rod 917 rotates, the circular box 13 fixedly connected to the top thereof will also rotate. During the downward movement of the above-mentioned bottom tube 99, the parts of the movable sleeve on the outer wall of the inner tube 910 will be squeezed, causing squeezing and causing it to perform preliminary force accumulation. It should be noted that only after all the gas stored in the bottom of the gas squeezing plug 914 is discharged, the circular box 13 can be detached from the clamping position, and the circular box 13 can also be rotated to the next clamping position. When it is necessary to rotate the circular box 13 multiple times, the long push rod 96 can be canceled. At this time, the inner tube 910 is 910 will generate a rebound force to lift the bottom tube 99, so that the internal push rod 913 and the gas squeeze plug 914 fixedly connected on the side move upward inside the total pressure relief pipe 14; during the movement, air can be supplied to the inside of the linkage gear 12 through the one-way air supply pipe A915 to drive the circular box 13 to rotate next time. In addition, it should be noted that the pressure relief channel 79 can be opened between the inside of the piston rod 77 and the outer shell, and its outlet end can be set on any surface of the outer shell of the piston rod 77 to facilitate pressure relief. It should also be noted that a circular opening can be opened on one side close to the gas-moving blade 918 to facilitate gas discharge.

[0027] See also Figure 8 The top of the card joint 719 is provided with a trapezoidal card slot 720. The top of the transmission rod 717 is fixedly installed with a limit plate A721. The outer wall of the limit plate A721 is movably connected to the inner wall of the card joint 719. The trapezoidal card slot 720 is an equilateral trapezoid as a whole. Since the two ends of the trapezoidal clamping groove 720 opened on the top of the clamping joint 719 are equilateral trapezoids, when the clamping joint 719 moves laterally to one side, the first gas one-way delivery head 713 will cut into the top of the clamping joint 719 along the side of the trapezoidal clamping groove 720. During the cutting process, the clamping joint 719 will move downward along the transmission rod 717. During the movement, it can squeeze the spring B718 and complete the initial force accumulation, so that the clamping joint 719 can shorten its length, thereby quickly disengaging from contact for the next clamping.

[0028] See also Figure 9 Local pressure relief holes 722 are provided on both sides of the bottom of the inner cavity of the external pressure relief pipe 94. A pressure relief guide rod 723 is fixedly installed on the top of the local pressure relief hole 722. A pressure relief spring 724 is movably sleeved on the outer wall of the pressure relief guide rod 723. A sealing slider 725 is movably sleeved on the top of the pressure relief guide rod 723. A pressure relief operation button 726 is fixedly installed on the top of the sealing slider 725. A limit buckle 727 is clamped on the top of the pressure relief operation button 726. When the pressure relief valve 720 is in the closed position, the sealing slider 725 is pressed down, and the sealing slider 725 is pressed down to release the pressure relief valve 720. When the pressure relief valve 720 is in the closed position, the sealing slider 725 is pressed down to release the pressure relief valve 720.

[0029] Working principle: When in use, Step 1: Multi-part graded support and height adjustment The orderly support and height adjustment of different parts of the patient's body are achieved through pneumatic transmission, specifically: pulling the push-pull handle 78 and the piston rod 77, so that the external gas is sucked in through the gas one-way suction tube 710 and transported to the gas collection tube 712 through the gas transmission tube 714, the round box 13 and other components, and then diverted by the gas collection tube 712 to the abdominal air supply tube 74, the shoulder air supply tube 75, and the lower limb air supply tube 76; because the flow diameter ratio of the three is 10:3:2, the abdominal air supply tube 74 drives the abdominal support airbag 821 to expand first to achieve abdominal support, the shoulder air supply tube 75 drives the shoulder support airbag 822 to expand secondly to supplement the shoulder support, and the lower limb air supply tube 76 drives the lower limb support airbag 823 to expand last to complete the lower limb support, forming an orderly support system; at the same time, pressing the air pressure adjustment component 7 can make the support pad body 8 expand and rise as a whole, and the side adjustment airbag 811 or the side auxiliary airbag 812 can be adjusted through the angle adjustment mechanism 9 to form an oblique angle to adapt to multi-angle treatment needs.

[0030] Step 2: Switching between linkage and one-way regulation The switching between "linked adjustment" and "one-way adjustment" is achieved through the rotation mechanism. The gear drive switching: rotating the rotating rod 10 drives the transmission gear 11 to rotate. Through the meshing transmission of the transmission gear 11 and the linkage gear 12, the circular box 13 is driven to rotate 360 ​​degrees, so that the card joint 719 connected to the circular box 13 is separated from the first one-way gas delivery head 713 and is engaged with any one of the one-way abdomen gas supply pipe 741, the one-way shoulder gas supply pipe 751, and the one-way lower limb gas supply pipe 761. When engaged, a "click" sound is produced. Tip: to achieve separate air supply and air pressure driven switching: push the long push rod 96 to make the fitting piston plate 97 squeeze the limit plate B98, and the limit plate B98 moves downward to squeeze the internal air of the air pressure transmission box 912 through the internal push rod 913. The gas drives the gas-driven leaf 918 to rotate and drives the circular box 13 to rotate. Similarly, the snap-on switching is completed; after the push is cancelled, the rebound force of the internal tube 910 resets the limit plate B98, and the one-way air supply pipe A915 replenishes air in preparation for the next adjustment.

[0031] Step 3: Accurate pressure relief and sealing The pressure is released in a controlled manner through a multi-stage pressure relief structure, and the seal is automatically reset after the pressure is released, and the overall linkage pressure relief is carried out: the main air pressure pipe 71 is pushed forward, and the pressure relief push pipe 711 pushes the total pressure relief pipe 14 of the pressure relief part to move downward, and the side pressure relief pipe 141 and the abdominal pressure relief connector 742 are extended into the shoulder air supply pipe 75, the lower limb air supply pipe 76 and the abdominal air supply pipe 74, so that the gas is discharged from the pressure relief channel 79 through the total pressure relief pipe 14 and the pressure relief push pipe 711, and the overall height of the support pad main unit is lowered, and local precise pressure relief is achieved: pull out the limit buckle 727 and press the pressure relief operation button 726, the sealing slider 725 squeezes the pressure relief spring 724 along the pressure relief guide rod 723, and the gas inside the support pad main body 8 is discharged through the local pressure relief hole 722; after the pressure is relieved to the appropriate pressure, release the pressure relief operation button 726, and the elastic rebound force of the pressure relief spring 724 pushes the sealing slider 725 to reset, reseal the pipeline, and prevent continuous gas leakage.

[0032] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field. The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A multi-angle positioning support device for tumor radiotherapy, comprising a treatment bed (1), a wiring tube (2) fixedly mounted on the top of the treatment bed (1), a connecting tube (3) fixedly mounted on one side of the wiring tube (2), a movable support rod (5) movably sleeved inside the connecting tube (3), and a head and neck support member (6) fixedly mounted on the bottom of one side of the movable support rod (5), characterized in that: An air pressure regulating assembly (7) is fixedly installed inside the wiring tube (2), a support pad body (8) is placed on the top of the wiring tube (2), an angle adjustment mechanism (9) is provided on the side of the support pad body (8), and the top of the support pad body (8) is wrapped with a rubber wrapping layer (18).

2. The multi-angle positioning stent device for tumor radiotherapy according to claim 1, characterized in that: The interior of the air pressure regulating assembly (7) includes a main air pressure pipe (71), a collar (72), a gas diversion block (73), an abdominal air supply pipe (74), a shoulder air supply pipe (75) and a lower limb air supply pipe (76). A wiring groove (4) is provided inside the wiring pipe (2). The main air pressure pipe (71) and the collar (72) are fixedly mounted on the surface of the wiring pipe (2). The ends of the main air pressure pipe (71) and the collar (72) near the wiring groove (4) pass through the gas diversion block (73). ) extends to the inside of the gas diversion block (73), the gas diversion block (73) is fixedly installed inside the wiring trough (4), the top of the gas diversion block (73) is fixedly installed with an abdominal air supply pipe (74), and both sides of the gas diversion block (73) are fixedly installed with a lower limb air supply pipe (76) and a shoulder air supply pipe (75), and the flow diameter ratio range of the abdominal air supply pipe (74), the shoulder air supply pipe (75) and the lower limb air supply pipe (76) is 10:3:

2.

3. The multi-angle positioning stent device for tumor radiotherapy according to claim 2, characterized in that: The interior of the support pad body (8) comprises a support pad side unit (81) and a support pad main unit; The interior of the support cushion main unit includes an abdominal support airbag (821), a shoulder support airbag (822), and a lower limb support airbag (823); the top of the abdominal air supply tube (74) is fixedly mounted with the abdominal support airbag (821); the top of the shoulder air supply tube (75) is fixedly connected to the shoulder support airbag (822); and the top of the lower limb air supply tube (76) is fixedly connected to the lower limb support airbag (823); The support pad side unit (81) includes a side adjustment airbag (811) and a side auxiliary airbag (812) inside, and the side adjustment airbag (811) and the side auxiliary airbag (812) are fixedly installed on both sides of the top of the abdomen support airbag (821), the shoulder support airbag (822), and the lower limb support airbag (823).

4. The multi-angle positioning stent device for tumor radiotherapy according to claim 3, characterized in that: The interior of the angle adjustment mechanism (9) includes a main adjustment tube (91), a middle connecting tube (92), a left connecting tube (93), an external pressure relief tube (94) and a right connecting tube (95). The side adjustment airbags (811) and the side auxiliary airbags (812) are arranged in a longitudinal array in three pieces. The outer walls of the middle side adjustment airbags (811) and the side auxiliary airbags (812) are fixedly mounted with the main adjustment tube (91). The top of the main adjustment tube (91) is fixedly connected with the middle connecting tube (92). The outer wall of the middle connecting tube (92) is connected to the middle side adjustment airbags. (811) and the outer walls of the side auxiliary airbag (812) are fixedly connected, and a left connecting pipe (93) and a right connecting pipe (95) are fixedly installed on both sides of the main regulating pipe (91), the left connecting pipe (93) is fixedly connected to the outer walls of the left side regulating airbag (811) and the side auxiliary airbag (812), and the right connecting pipe (95) is fixedly connected to the right side regulating airbag (811) and the side auxiliary airbag (812), and the outer walls of the three side regulating airbags (811) and the side auxiliary airbag (812) are fixedly installed with external pressure relief pipes (94).

5. The multi-angle positioning stent device for tumor radiotherapy according to claim 2, characterized in that: The main air pressure pipe (71) is internally movably sleeved with a piston rod (77), and a push-pull handle (78) is fixedly installed on the top of the piston rod (77). A pressure relief channel (79) is provided on the side of the main air pressure pipe (71), and a gas one-way suction pipe (710) is fixedly installed on the bottom side of the main air pressure pipe (71) away from the piston rod (77). A pressure relief push pipe (711) is fixedly installed inside the gas diversion block (73) of the main air pressure pipe (71), and a pressure relief component is movably sleeved on the end of the pressure relief push pipe (711) away from the piston rod (77). The bottom and the belly of the pressure relief component are provided with The trachea (74), the shoulder air supply pipe (75), and the lower limb air supply pipe (76) are internally movably connected, and one end of the abdominal air supply pipe (74), the shoulder air supply pipe (75), and the lower limb air supply pipe (76) away from the support pad body (8) is fixedly connected to a gas collection pipe (712), and a first gas one-way delivery head (713) is fixedly installed at the bottom of the gas collection pipe (712), a one-way abdominal air supply pipe (741) is fixedly installed on one side of the abdominal air supply pipe (74), and a one-way shoulder air supply pipe (751) is fixedly installed on the side of the shoulder air supply pipe (75) close to the gas collection pipe (712). The lower limb air supply pipe (76) is fixedly installed with a one-way lower limb air supply pipe (761) at the bottom of one side close to the gas collection pipe (712), the first gas one-way delivery head (713), the one-way shoulder air supply pipe (751), the one-way abdomen air supply pipe (741) and the one-way lower limb air supply pipe (761) are distributed in a semicircular shape, the main air pressure pipe (71) is movably sleeved with a gas transmission pipe (714), and one end of the gas transmission pipe (714) close to the main air pressure pipe (71) is fixedly sleeved with a blocking ring (715), and the top of the blocking ring (715) is fitted with a spring A (716) ), the outer wall of the spring A (716) is wound around the outer wall of the gas transmission tube (714), and the top is against the outer wall of one end of the main air pressure tube (71), the bottom of the end of the gas transmission tube (714) away from the main air pressure tube (71) is movably sleeved with a circular box (13), the circumferential outer wall of the circular box (13) is fixedly mounted with a transmission rod (717), the outer wall of the transmission rod (717) is wound with a spring B (718), the end of the transmission rod (717) away from the circular box (13) is movably sleeved with a card joint (719), and the circular box (13) realizes linkage adjustment or unidirectional adjustment through a rotating mechanism.

6. The multi-angle positioning stent device for tumor radiotherapy according to claim 5, characterized in that: The pressure relief component comprises a total pressure relief pipe (14), a side pressure relief pipe (141), a spring D (143), a side sealing plate (144), an abdominal sealing plate (145), and an abdominal pressure relief connector (742). The pressure relief push pipe (711) is movably connected to the total pressure relief pipe (14) through a connecting pipe. The two ends of the total pressure relief pipe (14) are fixedly mounted with the side pressure relief pipes (141). The outer wall of the side pressure relief pipe (141) is movably connected to the spring D (143). The bottom of the side pressure relief pipe (141) extends to the inside of the shoulder air supply pipe (75) and the lower limb air supply pipe (76). The bottom of the side pressure relief pipe (141) is fixedly connected to the side sealing plate (144). The side pressure relief pipe (141) and the side sealing plate (144) are both located between the shoulder air supply pipe (75) and the lower limb air supply pipe (76). The top of the side sealing plate (144) is provided with an air inlet A, the air inlet A is located at both ends of the side pressure relief pipe (141), and the air inlet A forms a friction connection with the sleeve joint of the shoulder air supply pipe (75) and the lower limb air supply pipe (76). The top of the abdominal pressure relief connector (742) is fixedly connected to the arc of the total pressure relief pipe (14), and the bottom of the abdominal pressure relief connector (742) is fixedly installed with the abdominal sealing plate (145). The abdominal sealing plate (145) is located inside the abdominal air supply pipe (74), and the top of the abdominal sealing plate (145) is provided with an air inlet B, the air inlet B is located at both ends of the bottom of the abdominal pressure relief connector (742), and the air inlet B forms a friction connection with the sleeve joint of the abdominal air supply pipe (74).

7. The multi-angle positioning stent device for tumor radiotherapy according to claim 5, characterized in that: The rotating mechanism comprises a rotating rod (10), a transmission gear (11), and a linkage gear (12); the linkage gear (12) is fixedly mounted on the top of the circular box (13); the side of the linkage gear (12) is meshedly connected to the transmission gear (11); the rotating rod (10) is fixedly mounted on the top of the transmission gear (11); and one end of the rotating rod (10) away from the transmission gear (11) is movably sleeved on the linkage gear (12).

8. The multi-angle positioning stent device for tumor radiotherapy according to claim 5, characterized in that: The rotating mechanism includes a long push rod (96), a fitting piston plate (97), a limit plate B (98), a bottom tube (99), an internal tube (910), a spring H (911), a pneumatic transmission box (912), an internal push rod (913), a gas extrusion plug (914), a one-way air supply pipe A (915), a one-way exhaust pipe (916), a rotating drive rod (917) and a gas toggle leaf (918), a limit ring (920), and the internal movement of the piston rod (77) The long push rod (96) is sleeved, the bottom of the long push rod (96) is fixedly mounted on the piston plate (97), the bottom of the piston rod (77) is fixedly mounted on the limit plate B (98), the bottom of the limit plate B (98) is fixedly mounted on the bottom of the bottom tube (99), the interior of the bottom tube (99) is movably sleeved on the internal tube (910), the outer wall of the internal tube (910) is movably sleeved on the spring H (911), and the bottom of the internal tube (910) is movably sleeved on the circular box (13 ), the bottom of the circular box (13) is movably connected to the pneumatic transmission box (912) through a rotating drive rod (917), the other side of the pneumatic transmission box (912) is movably connected to the internal push rod (913), the top of the internal push rod (913) is fixedly connected to the outer wall of the bottom tube (99), and the bottom of the internal push rod (913) is fixedly installed with a gas extrusion plug (914), the gas extrusion plug (914) and the other side of the internal movably connected to the pneumatic transmission box (912) The pneumatic transmission box (912) is connected to the pneumatic transmission box (912) by a movable sleeve, a horizontal plate is fixedly installed in the middle of the pneumatic transmission box (912), a one-way air supply pipe A (915) is fixedly installed inside the side of the pneumatic transmission box (912) away from the horizontal plate, a one-way exhaust pipe (916) is fixedly installed inside the horizontal plate, a gas shifting leaf (918) is provided inside the side of the pneumatic transmission box (912) away from the one-way air supply pipe A (915), and the outer wall of the gas shifting leaf (918) is fixedly connected to the circumferential outer wall of the rotating drive rod (917).

9. The multi-angle positioning stent device for tumor radiotherapy according to claim 5, characterized in that: A trapezoidal clamping groove (720) is provided on the top of the clamping joint (719), a limiting plate A (721) is fixedly mounted on the top of the transmission rod (717), an outer wall of the limiting plate A (721) is movably sleeved with the interior of the clamping joint (719), and the trapezoidal clamping groove (720) is an equilateral trapezoid as a whole.

10. The multi-angle positioning stent device for tumor radiotherapy according to claim 4, characterized in that: Local pressure relief holes (722) are provided on both sides of the bottom of the inner cavity of the external pressure relief pipe (94), a pressure relief guide rod (723) is fixedly installed on the top of the local pressure relief hole (722), a pressure relief spring (724) is movably sleeved on the outer wall of the pressure relief guide rod (723), a sealing slider (725) is movably sleeved on the top of the pressure relief guide rod (723), a pressure relief operation button (726) is fixedly installed on the top of the sealing slider (725), and a limiting buckle (727) is clamped on the top of the pressure relief operation button (726).

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