Auxiliary fixing device for tumor radiotherapy

Abstract

The invention discloses an auxiliary fixing device for tumor radiotherapy, and relates to the technical field of radiotherapy, the auxiliary fixing device comprises a radiotherapy fixing mechanism and a radiotherapy movable plate installed at the bottom of the radiotherapy fixing mechanism, the bottom of the radiotherapy fixing mechanism is provided with a treatment adjusting mechanism, and one side of the treatment adjusting mechanism is provided with radiotherapy equipment. The radiotherapy fixing mechanism comprises a limiting headrest, the limiting headrest is fixedly installed on one side of the top of the radiotherapy movable plate, an extrusion air bag is fixedly installed in the limiting headrest, a head protection pad is fixedly installed on the top of the extrusion air bag, a first connecting pipe is fixedly installed on one side of the extrusion air bag, and a second connecting pipe is fixedly installed on the other side of the extrusion air bag. The end part of the first connecting pipe is fixedly connected with a neck protection air bag, the head protection pad is extruded under the gravity action of the head, so that the head protection pad compresses the extrusion air bag, air in the extrusion air bag is extruded into the neck protection air bag, the neck of a patient can be supported through the neck protection air bag, and the comfort during radiotherapy is improved.

Description

Technical Field

[0001] This invention relates to the field of radiotherapy technology, specifically to an auxiliary fixation device for tumor radiotherapy. Background Technology

[0002] Radiotherapy is a treatment that uses one or more types of ionizing radiation to treat malignant tumors and some benign tumors. The means of radiotherapy is ionizing radiation. The most commonly used direct ionizing particle in radiotherapy is the electron, and the most commonly used indirect ionizing particle is the photon. Radiotherapy auxiliary devices generally include simulation positioning equipment, body positioning devices, treatment planning systems, and network systems. Current technologies still have some shortcomings in the use of radiotherapy auxiliary devices for cancer patients. Radiotherapy mainly targets the tumor. During radiotherapy, due to the long duration, prolonged sitting or lying down, the position of the patient is prone to shift, affecting the treatment effect.

[0003] Publication No. CN207614190U discloses an auxiliary device for radiotherapy. During radiotherapy to treat tumors, the device synchronously moves the patient's position in conjunction with the displacement caused by the patient's breathing, ensuring that the radiation irradiation position remains fixed within the predetermined tumor target area without deviation. This feature reduces the irradiation range of existing radiotherapy techniques and avoids unnecessary radiation exposure to normal tissues surrounding the tumor treatment target, thus improving the accuracy and efficiency of radiotherapy. However, this patent still has the following problems in practical use:

[0004] While this radiotherapy auxiliary device can fix the radiation irradiation position within the pre-defined tumor target area and prevent deviation, the patient's body inevitably shifts to some extent during prolonged treatment, causing deviations from the originally planned radiotherapy area. This not only affects the effectiveness of radiotherapy but also has certain adverse effects on the body. Furthermore, it is inconvenient to immobilize the patient's hands and body parts during radiotherapy. For example, when radiotherapy for esophageal and lung cancer, the patient needs to cover their head with their hands to avoid irradiation of the upper limbs, but it is not convenient to immobilize the patient's head and hands. During treatment, the patient's movement causes changes in the radiotherapy range, thus affecting the treatment effect.

[0005] Therefore, an auxiliary fixation device for tumor radiotherapy is proposed to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide an auxiliary fixation device for tumor radiotherapy, in order to solve the problems mentioned in the background art, where patients inevitably experience some displacement during long-term treatment, leading to deviations in the originally planned radiotherapy area. This not only affects the effectiveness of radiotherapy but also has certain impacts on the body. Furthermore, it is inconvenient to fix the patient's hands and body parts, especially the head and hands, during radiotherapy. The patient's movement during treatment can cause changes in the radiotherapy range, thereby affecting the treatment effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary fixation device for tumor radiotherapy, comprising a radiotherapy fixation mechanism and a radiotherapy movable plate installed at the bottom of the radiotherapy fixation mechanism;

[0008] The bottom of the radiotherapy fixation mechanism is provided with a treatment adjustment mechanism, and a radiotherapy device is provided on one side of the treatment adjustment mechanism.

[0009] Also includes:

[0010] The radiotherapy fixation mechanism includes a limiting headrest, which is fixedly installed on the top side of the radiotherapy movable plate. A compression airbag is fixedly installed inside the limiting headrest, and a head protection pad is fixedly installed on the top of the compression airbag.

[0011] Among them, a first connecting tube is fixedly installed on one side of the compression airbag, and a neck protection airbag is fixedly connected to the end of the first connecting tube.

[0012] The neck protection airbag has a second connecting tube fixedly installed on both sides, and the ends of the two second connecting tubes are fixedly connected to the arm support airbag.

[0013] Preferably, each of the two arm support airbags is rotatably connected to a push connecting rod on one side, and each of the ends of the two push connecting rods is rotatably connected to a first rack. A sliding bracket is provided on the outer side of the first rack, and a pressing handle is fixedly installed on the top of the first rack. Limiting slide rails are symmetrically installed inside the sliding bracket.

[0014] Preferably, a meshing gear is rotatably connected to the inner center of the sliding bracket, the meshing gear meshes with a first rack, a fixed rack meshes with the side of the meshing gear away from the first rack, the fixed rack and the first rack are slidably connected to a limiting slide rail, the sliding bracket is slidably connected to a radiotherapy movable plate, and a first connecting spring is fixedly connected to the bottom of both the fixed rack and the first rack.

[0015] Preferably, the top two sides of the limiting headrest are fixedly connected to limiting brackets, and a first sprocket limiting cover is fixedly installed on one side of each of the two limiting brackets. A first sprocket transmission assembly is rotatably connected inside the first sprocket limiting cover. A limiting knob is fixedly installed on one side of the first sprocket transmission assembly, and a limiting threaded rod is fixedly installed on the side of the first sprocket transmission assembly away from the limiting knob.

[0016] Preferably, the outer side of the limiting threaded rod is threadedly connected to a limiting threaded sleeve, the top of the limiting threaded sleeve is fixedly installed with a limiting fixing rod, the inside of the limiting fixing rod is fixedly installed with a supporting sliding rod, the outer side of the supporting sliding rod is slidably connected to a supporting sliding sleeve, one side of the supporting sliding sleeve is fixedly installed with a supporting spring, the outer side of the supporting sliding sleeve is rotatably connected to a supporting rotating rod, the end of the supporting rotating rod is rotatably connected to a limiting clamp, the top of the limiting clamp is fixedly installed with a connecting sliding sleeve, the inside of the connecting sliding sleeve is slidably connected with a connecting sliding rod, one side of the connecting sliding sleeve is fixedly installed with a second connecting spring, and the outer side of the connecting sliding rod is fixedly installed with a first protective cover.

[0017] Preferably, adjusting sliding rods are fixedly installed on both sides of the inner side of the radiotherapy movable plate, and adjusting sliding sleeves are symmetrically slidably connected to the outer sides of the two adjusting sliding rods. A clamping bracket is fixedly installed on the top of the adjusting sliding sleeve, a clamping sliding rod is fixedly installed inside the clamping bracket, a clamping sliding sleeve is slidably connected to the outer side of the clamping sliding rod, a clamping spring is fixedly installed on the top of the clamping sliding sleeve, a first strap is fixedly installed between the two clamping springs, and a second strap is fixedly installed around the top of the radiotherapy movable plate.

[0018] Preferably, the treatment adjustment mechanism includes a translation bracket, a second sprocket limiting cover is fixedly installed on one side of the translation bracket, a translation motor is fixedly installed on the inner side of the second sprocket limiting cover, a second sprocket transmission assembly is fixedly connected to the output end of the translation motor, a translation threaded rod is symmetrically connected to one side of the second sprocket transmission assembly, and translation threaded sleeves are symmetrically threaded to the outer sides of the two translation threaded rods. The translation threaded sleeves are fixedly installed at the bottom of the radiotherapy movable plate, and an accordion protective cover is fixedly installed at the bottom of the translation bracket.

[0019] Preferably, a movable plate base is fixedly installed at the bottom of the bellows cover, and lifting top frames are symmetrically installed at the bottom of the translation bracket. A third sprocket limit cover is fixedly installed on one side of each of the two lifting top frames. A lifting motor is fixedly installed on one side inside the third sprocket limit cover. A third sprocket transmission assembly is fixedly connected to the output end of the lifting motor. A lifting bidirectional threaded rod is symmetrically connected to one side of the third sprocket transmission assembly. Lifting threaded sleeves are symmetrically threaded on both sides of each of the two lifting bidirectional threaded rods.

[0020] Preferably, a lifting rotating rod is rotatably connected to the bottom of the lifting threaded sleeve, a lifting sliding sleeve is rotatably connected to the bottom of the lifting rotating rod, a lifting sliding rod is slidably connected inside the lifting sliding sleeve, a lifting base is fixedly installed on the outside of the lifting sliding rod, the lifting base is symmetrically installed on the top of the movable plate base, a fixing spring is fixedly installed on one side of the translation threaded sleeve, the fixing spring is fixedly connected to the lifting base, and the radiotherapy equipment is fixedly installed on one side of the movable plate base.

[0021] Compared with the prior art, the beneficial effects of this invention are as follows: This auxiliary fixation device for tumor radiotherapy utilizes the gravity of the head to compress the head protection pad, which in turn compresses the airbag, forcing the gas in the airbag into the neck protection airbag. The neck protection airbag supports the patient's neck, improving comfort during radiotherapy. When the fixing rack separates from the slot inside the radiotherapy movable plate, moving the pressing handle outward causes the connecting rod and arm support airbag to slide outward. The arm support airbag supports the bottom of the arm, improving arm placement comfort. The bellows cover protects the lifting bidirectional threaded rod, preventing dust from adhering inside and affecting its transmission. The specific details are as follows:

[0022] 1. By setting up a radiotherapy fixation mechanism, the patient's head can be stabilized by gravity, compressing the head protection pad and squeezing the airbag. This airbag then forces gas into the neck protection airbag, providing support for the neck and improving comfort during radiotherapy. It prevents movement during treatment from affecting the radiotherapy's effectiveness. In radiotherapy for esophageal and lung cancer, to prevent irradiation of the upper limbs, patients often need to clasp their hands behind their head. Holding the pressure handle provides support for the arms. When the arm is sore, pulling the press handle upwards moves the first rack upwards. Utilizing the meshing connection between the first rack, the meshing gear, and the fixed rack, the fixed rack descends. When the fixed rack separates from the slot inside the radiotherapy movable plate, moving the press handle outwards pushes the connecting rod and the arm support airbag to slide outwards. The arm support airbag provides support to the bottom of the arm, improving arm placement comfort. When the head is placed on top of the head protection pad, the limiting plates on both sides of the head press against the head, and under the action of the support spring, the support rotating rod... The limiting clamps rotate, clamping and fixing the patient's head on both sides. Simultaneously, the first protective covers on top of the limiting clamps rotate relative to each other, covering the patient's head for protection. The sliding connection between the connecting sliding rod and the connecting sliding sleeve allows the two first protective covers to slide relative to each other, accommodating different patient head shapes. Rotating the limiting knob rotates the first sprocket drive assembly and the limiting threaded rod, causing the limiting threaded sleeve to move the limiting fixing rod, thus adjusting the distance between the two limiting clamps to accommodate patients of different body types. The sliding connection between the adjusting sliding rod and the adjusting sliding sleeve allows adjustment of the position of the pressure bracket. The spring force of the pressure spring causes the pressure sliding sleeve to lower the first strap, providing secondary fixation of the patient's radiotherapy site and improving the stability of the radiotherapy position. The second strap secures the patient's hands and legs, preventing movement that could affect the radiotherapy effect. Both the first and second straps are adjustable Velcro structures to accommodate patients of different body types.

[0023] 2. By setting up a treatment adjustment mechanism, not only can the translation motor drive the second sprocket transmission assembly and the translation threaded rod to rotate, causing the translation threaded sleeve to move the radiotherapy mobile plate, facilitating radiotherapy to different parts of the patient, but the bellows protective cover can also protect the lifting bidirectional threaded rod, preventing dust from adhering inside and affecting its transmission. Starting the lifting motor drives the third sprocket transmission assembly and the lifting bidirectional threaded rod to rotate, causing the lifting threaded sleeve to move relative to the outside of the lifting bidirectional threaded rod while simultaneously driving the lifting rotating rod to rotate. At the same time, the lifting sliding sleeve slides on the outside of the lifting sliding rod, adjusting the distance between the lifting base frame and the lifting top frame, thereby adjusting the height of the translation support, making it easier for the patient to lie on the radiotherapy mobile plate for radiotherapy. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the radiotherapy fixation mechanism in this invention;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the limiting headrest in this invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the neck protection airbag and arm support airbag in this invention;

[0028] Figure 5 This is a three-dimensional cross-sectional structural diagram of the sliding bracket in this invention;

[0029] Figure 6 This is a three-dimensional cross-sectional structural diagram of the first protective cover in this invention;

[0030] Figure 7 This is a three-dimensional structural diagram of the limiting and fixing rod in this invention.

[0031] Figure 8 This is a three-dimensional structural diagram of the cross-section of the clamping bracket in this invention;

[0032] Figure 9 This is a three-dimensional structural diagram of the treatment adjustment mechanism in this invention;

[0033] Figure 10 This is a three-dimensional structural diagram of the accordion protective cover in this invention;

[0034] Figure 11 This is a three-dimensional structural diagram of the lifting and rotating rod in this invention.

[0035] In the diagram: 1. Radiotherapy fixation mechanism; 101. Limiting headrest; 102. Compression airbag; 103. Head protection pad; 104. First connecting tube; 105. Neck protection airbag; 106. Second connecting tube; 107. Arm support airbag; 108. Push connecting rod; 109. First rack; 110. Sliding bracket; 111. Press handle; 112. Limiting slide rail; 113. Meshing gear; 114. Fixing rack; 115. First connecting... 116. Spring; 117. Limiting bracket; 118. First sprocket limiting cover; 119. First sprocket transmission assembly; 120. Limiting knob; 121. Limiting threaded rod; 122. Limiting threaded sleeve; 123. Limiting fixing rod; 124. Supporting sliding rod; 125. Supporting sliding sleeve; 126. Supporting rotating rod; 127. Limiting clamp; 128. Connecting sliding sleeve; 129. Connecting sliding rod; 130. Second connecting spring; 131. First protective cover; 132. Radiotherapy movable plate; 133. Adjusting sliding rod; 134. Adjusting sliding sleeve; 135. Pressing bracket; 136. Pressing sliding rod; 137. Pressing sliding sleeve; 138. Pressing spring; 139. First strap; 140. Second strap; 2. Treatment adjustment mechanism; 201. Translation bracket; 202. Second sprocket limit cover; 203. Translation motor; 204. Second sprocket transmission assembly; 205. Translation screw 206. Threaded rod; 207. Translation threaded sleeve; 208. Bellows protective cover; 209. Movable plate base; 2000. Lifting top frame; 210. Third sprocket limit cover; 211. Lifting motor; 212. Third sprocket transmission assembly; 213. Lifting bidirectional threaded rod; 214. Lifting threaded sleeve; 215. Lifting rotating rod; 216. Lifting sliding sleeve; 217. Lifting sliding rod; 218. Lifting base frame; 219. Fixed spring; 220. Radiotherapy equipment. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1-5The present invention provides a technical solution: an auxiliary fixation device for tumor radiotherapy, comprising a radiotherapy fixation mechanism 1 and a radiotherapy movable plate 132 installed at the bottom of the radiotherapy fixation mechanism 1. A treatment adjustment mechanism 2 is provided at the bottom of the radiotherapy fixation mechanism 1, and a radiotherapy device 220 is provided on one side of the treatment adjustment mechanism 2. The radiotherapy fixation mechanism 1 includes a limiting headrest 101, which is fixedly installed on the top side of the radiotherapy movable plate 132. A compression airbag 102 is fixedly installed inside the limiting headrest 101, and a head protection pad 103 is fixedly installed on the top of the compression airbag 102. A first connecting tube 104 is fixedly installed on one side of the compression airbag 102, and the end of the first connecting tube 104 is fixedly connected to a neck support. The neck airbag 105 includes two fixedly mounted second connecting tubes 106 on both sides. Arm support airbags 107 are fixedly connected to the ends of the two second connecting tubes 106. Push connecting rods 108 are rotatably connected to one side of each arm support airbag 107. First racks 109 are rotatably connected to the ends of each push connecting rod 108. A sliding bracket 110 is provided on the outer side of the first rack 109. A pressing handle 111 is fixedly mounted on the top of the first rack 109. Limiting slide rails 112 are symmetrically installed inside the sliding bracket 110. A meshing gear 113 is rotatably connected to the center of the sliding bracket 110. The meshing gear 113 meshes with the first rack 109. A fixed rack 114 is meshed with the side of gear 113 away from the first rack 109. The fixed rack 114 and the first rack 109 are slidably connected to the limiting slide rail 112. The sliding bracket 110 is slidably connected to the radiotherapy movable plate 132. A first connecting spring 115 is fixedly connected to the bottom of both the fixed rack 114 and the first rack 109. Utilizing the weight of the head, the head protection pad 103 is squeezed, causing the head protection pad 103 to compress the airbag 102. The air in the airbag 102 is then squeezed into the neck protection airbag 105. The neck protection airbag 105 provides support for the patient's neck, improving comfort during radiotherapy and preventing the patient's movement from affecting the treatment process. To prevent irradiation of the upper limbs during radiotherapy for esophageal and lung cancer, patients need to hold their heads with their hands behind their backs. By gripping the press handle 111, the arms can be supported. When the arms become sore, pulling the press handle 111 upwards moves the first rack 109 upwards. Utilizing the meshing connection between the first rack 109, the meshing gear 113, and the fixed rack 114, the fixed rack 114 descends. When the fixed rack 114 separates from the slot inside the radiotherapy movable plate 132, moving the press handle 111 outwards causes the connecting rod 108 and the arm support airbag 107 to slide outwards. The arm support airbag 107 supports the bottom of the arm, improving the comfort of arm placement.

[0038] Please see Figures 3-7Limiting brackets 116 are fixedly connected to both sides of the top of the limiting headrest 101. A first sprocket limiting cover 117 is fixedly installed on one side of each of the two limiting brackets 116. A first sprocket transmission assembly 118 is rotatably connected inside the first sprocket limiting cover 117. A limiting knob 119 is fixedly installed on one side of the first sprocket transmission assembly 118. A limiting threaded rod 120 is fixedly installed on the side of the first sprocket transmission assembly 118 away from the limiting knob 119. A limiting threaded sleeve 121 is threadedly connected to the outer side of the limiting threaded rod 120. A limiting rod 122 is fixedly installed at the top of 21. A supporting sliding rod 123 is fixedly installed inside the limiting rod 122. A supporting sliding sleeve 124 is slidably connected to the outside of the supporting sliding rod 123. A supporting spring 125 is fixedly installed on one side of the supporting sliding sleeve 124. A supporting rotating rod 126 is rotatably connected to the outside of the supporting sliding sleeve 124. A limiting clamp 127 is rotatably connected to the end of the supporting rotating rod 126. A connecting sliding sleeve 128 is fixedly installed at the top of the limiting clamp 127. The inside of the connecting sliding sleeve 128 is slidably connected to... A connecting sliding rod 129 is provided, and a second connecting spring 130 is fixedly installed on one side of the connecting sliding sleeve 128. A first protective cover 131 is fixedly installed on the outer side of the connecting sliding rod 129. When the head is placed on top of the head protection pad 103, the two sides of the head press against the limiting clamp 127. Under the action of the support spring 125, the support rotating rod 126 drives the limiting clamp 127 to rotate. The limiting clamp 127 can clamp and fix the two sides of the patient's head. At the same time, the first protective cover 131 on the top of the limiting clamp 127 rotates relative to the head, using the two... The first protective cover 131 can cover the patient's head, thereby protecting the head. Utilizing the sliding connection between the connecting sliding rod 129 and the connecting sliding sleeve 128, the two first protective covers 131 can slide relative to each other, thus adapting to different patients' heads. By rotating the limiting knob 119, the first sprocket transmission assembly 118 and the limiting threaded rod 120 are driven to rotate, causing the limiting threaded sleeve 121 to drive the limiting fixing rod 122 to move, thereby adjusting the distance between the two limiting clamps 127, thus adapting to patients of different body types.

[0039] Please see Figure 2 , Figure 8The radiotherapy movable plate 132 has adjustable sliding rods 133 fixedly installed on both sides inside. Adjustable sliding sleeves 134 are symmetrically slidably connected to the outer sides of the two adjustable sliding rods 133. A clamping bracket 135 is fixedly installed on the top of the adjustable sliding sleeve 134. A clamping sliding rod 136 is fixedly installed inside the clamping bracket 135. A clamping sliding sleeve 137 is slidably connected to the outer side of the clamping sliding rod 136. A clamping spring 138 is fixedly installed on the top of the clamping sliding sleeve 137. A first strap 139 is fixedly installed between the two clamping springs 138. The top four sides of the radiotherapy movable plate 132 are fixedly equipped with… The second strap 140 utilizes the sliding connection between the adjusting sliding rod 133 and the adjusting sliding sleeve 134 to adjust the position of the clamping bracket 135. The elastic force of the clamping spring 138 causes the clamping sliding sleeve 137 to drive the first strap 139 down, thereby providing secondary fixation for the patient's radiotherapy site and improving the stability of the radiotherapy position. The second strap 140 can also fix the patient's hands and legs to prevent the patient from shaking and thus affecting the radiotherapy effect. The first strap 139 and the second strap 140 are adjustable Velcro structures, which can adapt to patients of different body types.

[0040] Please see Figure 1 , Figures 9-11The treatment adjustment mechanism 2 includes a translation support 201. A second sprocket limiting cover 202 is fixedly installed on one side of the translation support 201. A translation motor 203 is fixedly installed inside the second sprocket limiting cover 202. A second sprocket transmission assembly 204 is fixedly connected to the output end of the translation motor 203. Translation threaded rods 205 are symmetrically connected to one side of the second sprocket transmission assembly 204. Translation threaded sleeves 206 are symmetrically threaded to the outer sides of the two translation threaded rods 205. The translation threaded sleeves 206 are fixedly installed at the bottom of the radiotherapy movable plate 132. An accordion protective cover 207 is fixedly installed at the bottom of the translation support 201. A accordion protective cover 207 is fixedly installed at the bottom of the accordion protective cover 207. The movable platform base 208 and the bottom of the translation bracket 201 are symmetrically equipped with lifting top frames 209. A third sprocket limit cover 210 is fixedly installed on one side of each of the two lifting top frames 209. A lifting motor 211 is fixedly installed inside one side of the third sprocket limit cover 210. A third sprocket transmission assembly 212 is fixedly connected to the output end of the lifting motor 211. A lifting bidirectional threaded rod 213 is symmetrically connected to one side of the third sprocket transmission assembly 212. Lifting threaded sleeves 214 are symmetrically threaded to both sides of the two lifting bidirectional threaded rods 213. A lifting rotating rod 215 is rotatably connected to the bottom of the lifting threaded sleeve 214. A lifting sliding rod 215 is rotatably connected to the bottom of the lifting rotating rod 215. The sliding sleeve 216 has a sliding lifting rod 217 internally connected to it. A lifting base 218 is fixedly installed on the outside of the lifting rod 217. The lifting base 218 is symmetrically installed on the top of the movable plate base 208. A fixing spring 219 is fixedly installed on one side of the translation threaded sleeve 206, and the fixing spring 219 is fixedly connected to the lifting base 218. The radiotherapy equipment 220 is fixedly installed on one side of the movable plate base 208. The translation motor 203 drives the second sprocket transmission assembly 204 and the translation threaded rod 205 to rotate, causing the translation threaded sleeve 206 to move the radiotherapy movable plate 132, facilitating radiotherapy to different parts of the patient. (The last sentence appears to be incomplete and possibly refers to a separate feature: "Utilizing accordion protection...") Cover 207 protects the lifting bidirectional threaded rod 213 from dust adhering inside, thus preventing it from affecting the transmission of the lifting bidirectional threaded rod 213. Starting the lifting motor 211 drives the third sprocket transmission assembly 212 and the lifting bidirectional threaded rod 213 to rotate, causing the lifting threaded sleeve 214 to move relative to the outside of the lifting bidirectional threaded rod 213 while driving the lifting rotating rod 215 to rotate. At the same time, the lifting sliding sleeve 216 slides on the outside of the lifting sliding rod 217, which can adjust the distance between the lifting base frame 218 and the lifting top frame 209, thereby adjusting the height of the translation support 201, making it easier for the patient to lie on the radiotherapy activity board 132 for radiotherapy.

[0041] Working principle: Before using this type of auxiliary fixation device for tumor radiotherapy, it is necessary to check the overall condition of the device to ensure it can function properly. Figure 1 - Figure 11As shown, firstly, the head's own weight is used to compress the head protection pad 103, causing it to compress the airbag 102. This compresses the airbag 102 into the neck protection airbag 105, which supports the patient's neck, improving comfort during radiotherapy and preventing the treatment's effectiveness from being affected by patient movement. When performing radiotherapy for esophageal and lung cancer, to prevent irradiation of the upper limbs, the patient needs to hold their head with both hands. This is achieved by gripping and pressing the handle 111. The arm is supported. When the arm is sore, the first rack 109 is moved upward by pulling the pressing handle 111 upward. The fixed rack 114 is lowered by the meshing connection between the first rack 109, the meshing gear 113 and the fixed rack 114. When the fixed rack 114 is separated from the slot inside the radiotherapy active plate 132, the pressing handle 111 is moved outward to push the connecting rod 108 and the arm support airbag 107 to slide outward. The arm support airbag 107 can support the bottom of the arm and improve the comfort of arm placement.

[0042] Secondly, when the head is placed on top of the head protection pad 103, the limiting clamps 127 are pressed against the sides of the head. Under the action of the support spring 125, the support rotating rod 126 drives the limiting clamps 127 to rotate. The limiting clamps 127 can clamp and fix the patient's head on both sides. At the same time, the first protective cover 131 on the top of the limiting clamps 127 rotates relative to each other. The two first protective covers 131 can cover the patient's head, thus protecting the head. Utilizing the sliding connection between the connecting sliding rod 129 and the connecting sliding sleeve 128, the two first protective covers 131 can slide relative to each other, thus adapting to different patients' heads. By rotating the limiting knob 119, the first sprocket transmission assembly 118 and the limiting threaded rod 127 are driven. Rotating the 20mm diameter screw thread sleeve 121 causes the limiting fixed rod 122 to move, thereby adjusting the distance between the two limiting clamps 127 to accommodate patients of different body types. Utilizing the sliding connection between the adjusting sliding rod 133 and the adjusting sliding sleeve 134, the position of the clamping bracket 135 can be adjusted. Utilizing the elastic force of the clamping spring 138, the clamping sliding sleeve 137 can cause the first strap 139 to descend, thereby providing secondary fixation to the patient's radiotherapy site and improving the stability of the radiotherapy position. The second strap 140 can fix the patient's hands and legs to prevent the patient from shaking and thus affecting the radiotherapy effect. The first strap 139 and the second strap 140 are adjustable Velcro structures, which can accommodate patients of different body types.

[0043] Finally, the translation motor 203 drives the second sprocket transmission assembly 204 and the translation threaded rod 205 to rotate, causing the translation threaded sleeve 206 to move the radiotherapy movable plate 132, facilitating radiotherapy to different parts of the patient. The bellows protective cover 207 protects the lifting bidirectional threaded rod 213, preventing dust from adhering inside and affecting its transmission. The lifting motor 211 is started, driving the third sprocket transmission assembly 212 and the lifting bidirectional threaded rod 213 to rotate, causing the lifting threaded sleeve 214 to move relative to the outside of the lifting bidirectional threaded rod 213 while driving the lifting rotating rod 215 to rotate. At the same time, the lifting sliding sleeve 216 slides on the outside of the lifting sliding rod 217, adjusting the distance between the lifting base frame 218 and the lifting top frame 209, thereby adjusting the height of the translation support 201, making it easier for the patient to lie on the radiotherapy movable plate 132 for radiotherapy.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An auxiliary fixation device for tumor radiotherapy, comprising a radiotherapy fixation mechanism (1) and a radiotherapy movable plate (132) installed at the bottom of the radiotherapy fixation mechanism (1); The bottom of the radiotherapy fixation mechanism (1) is provided with a treatment adjustment mechanism (2), and a radiotherapy device (220) is provided on one side of the treatment adjustment mechanism (2); Its features are, Also includes: The radiotherapy fixation mechanism (1) includes a limiting head pillow (101), which is fixedly installed on the top side of the radiotherapy movable plate (132). A compression airbag (102) is fixedly installed inside the limiting head pillow (101), and a head protection pad (103) is fixedly installed on the top of the compression airbag (102). Among them, a first connecting tube (104) is fixedly installed on one side of the compression airbag (102), and a neck protection airbag (105) is fixedly connected to the end of the first connecting tube (104). Among them, the neck protection airbag (105) is fixedly installed with a second connecting tube (106) on both sides, and the ends of the two second connecting tubes (106) are fixedly connected to an arm support airbag (107).

2. The auxiliary fixation device for tumor radiotherapy according to claim 1, characterized in that: Each of the two arm support airbags (107) is rotatably connected to a push connecting rod (108) on one side. Each of the two push connecting rods (108) is rotatably connected to a first rack (109) at the end. A sliding bracket (110) is provided on the outer side of the first rack (109). A pressing handle (111) is fixedly installed on the top of the first rack (109). Limiting slide rails (112) are symmetrically installed inside the sliding bracket (110).

3. The auxiliary fixation device for tumor radiotherapy according to claim 2, characterized in that: The sliding bracket (110) is rotatably connected to a meshing gear (113) at its internal center position. The meshing gear (113) meshes with a first rack (109). A fixed rack (114) meshes with the side of the meshing gear (113) away from the first rack (109). The fixed rack (114) and the first rack (109) are slidably connected to a limiting slide rail (112). The sliding bracket (110) is slidably connected to a radiotherapy active plate (132). A first connecting spring (115) is fixedly connected to the bottom of both the fixed rack (114) and the first rack (109).

4. The auxiliary fixation device for tumor radiotherapy according to claim 3, characterized in that: The top two sides of the limiting headrest (101) are fixedly connected to limiting brackets (116). A first sprocket limiting cover (117) is fixedly installed on one side of each of the two limiting brackets (116). A first sprocket transmission assembly (118) is rotatably connected inside the first sprocket limiting cover (117). A limiting knob (119) is fixedly installed on one side of the first sprocket transmission assembly (118). A limiting threaded rod (120) is fixedly installed on the side of the first sprocket transmission assembly (118) away from the limiting knob (119).

5. The auxiliary fixation device for tumor radiotherapy according to claim 4, characterized in that: The outer side of the limiting threaded rod (120) is threadedly connected to a limiting threaded sleeve (121). A limiting fixing rod (122) is fixedly installed on the top of the limiting threaded sleeve (121). A supporting sliding rod (123) is fixedly installed inside the limiting fixing rod (122). A supporting sliding sleeve (124) is slidably connected to the outer side of the supporting sliding rod (123). A supporting spring (125) is fixedly installed on one side of the supporting sliding sleeve (124). The outer side of the supporting sliding sleeve (124)... A supporting rotating rod (126) is rotatably connected, and a limiting clamp (127) is rotatably connected to the end of the supporting rotating rod (126). A connecting sliding sleeve (128) is fixedly installed on the top of the limiting clamp (127). A connecting sliding rod (129) is slidably connected inside the connecting sliding sleeve (128). A second connecting spring (130) is fixedly installed on one side of the connecting sliding sleeve (128). A first protective cover (131) is fixedly installed on the outside of the connecting sliding rod (129).

6. The auxiliary fixation device for tumor radiotherapy according to claim 5, characterized in that: Adjustable sliding rods (133) are fixedly installed on both sides of the inside of the radiotherapy movable plate (132). Adjustable sliding sleeves (134) are symmetrically slidably connected to the outer sides of the two adjustable sliding rods (133). A clamping bracket (135) is fixedly installed on the top of the adjustable sliding sleeve (134). A clamping sliding rod (136) is fixedly installed inside the clamping bracket (135). A clamping sliding sleeve (137) is slidably connected to the outer side of the clamping sliding rod (136). A clamping spring (138) is fixedly installed on the top of the clamping sliding sleeve (137). A first strap (139) is fixedly installed between the two clamping springs (138). A second strap (140) is fixedly installed around the top of the radiotherapy movable plate (132).

7. The auxiliary fixation device for tumor radiotherapy according to claim 1, characterized in that: The treatment adjustment mechanism (2) includes a translation bracket (201). A second sprocket limiting cover (202) is fixedly installed on one side of the translation bracket (201). A translation motor (203) is fixedly installed on one side inside the second sprocket limiting cover (202). A second sprocket transmission assembly (204) is fixedly connected to the output end of the translation motor (203). A translation threaded rod (205) is symmetrically connected to one side of the second sprocket transmission assembly (204). Translation threaded sleeves (206) are symmetrically threaded to the outer sides of the two translation threaded rods (205). The translation threaded sleeves (206) are fixedly installed at the bottom of the radiotherapy active plate (132). An accordion protective cover (207) is fixedly installed at the bottom of the translation bracket (201).

8. The auxiliary fixation device for tumor radiotherapy according to claim 7, characterized in that: The bottom of the bellows cover (207) is fixedly installed with a movable plate base (208). The bottom of the translation bracket (201) is symmetrically installed with lifting top brackets (209). A third sprocket limit cover (210) is fixedly installed on one side of the two lifting top brackets (209). A lifting motor (211) is fixedly installed on one side of the inside of the third sprocket limit cover (210). The output end of the lifting motor (211) is fixedly connected to a third sprocket transmission assembly (212). A lifting bidirectional threaded rod (213) is symmetrically connected on one side of the third sprocket transmission assembly (212). Lifting threaded sleeves (214) are symmetrically threaded on both sides of the two lifting bidirectional threaded rods (213).

9. The auxiliary fixation device for tumor radiotherapy according to claim 8, characterized in that: The bottom of the lifting threaded sleeve (214) is rotatably connected to a lifting rotating rod (215), the bottom of the lifting rotating rod (215) is rotatably connected to a lifting sliding sleeve (216), the inside of the lifting sliding sleeve (216) is slidably connected to a lifting sliding rod (217), the outside of the lifting sliding rod (217) is fixedly installed with a lifting base (218), the lifting base (218) is symmetrically installed on the top of the movable plate base (208), a fixing spring (219) is fixedly installed on one side of the translation threaded sleeve (206), the fixing spring (219) is fixedly connected to the lifting base (218), and the radiotherapy equipment (220) is fixedly installed on one side of the movable plate base (208).

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