Head, neck and arm fixing device for chest tumor radiotherapy

Abstract

The invention relates to the technical field of medical auxiliary tools, in particular to a head, neck and arm fixing device for chest tumor radiotherapy. According to the head, neck and arm fixing device for chest tumor radiotherapy, arms and necks of patients can be fixed more conveniently and more quickly, and time waste can be reduced. A head, neck and arm fixing device for chest tumor radiotherapy comprises a support, a cabin, an electric cylinder and the like. A cabin is fixedly connected to the top of the support, two electric air cylinders are fixedly connected to the bottom of the inner wall of the cabin, and the two electric air cylinders are symmetrically arranged. The arm fixing frame moves downwards to fix the arm of the patient on the bed, and the two neck fixing blocks rotate to fix the neck of the patient, so that the body position of the patient can be fixed quickly, the fixing steps are simplified, time waste can be reduced, and medical staff can use the body position fixing device more conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary tools, and in particular to a head, neck and arm fixing device for chest tumor radiotherapy. Background Art

[0002] Radiotherapy is different from general surgery. General surgery can usually be completed in a few hours, while radiotherapy usually takes several days or weeks, with irradiation once or several times a day. The total irradiation time is longer, and each radiotherapy needs to irradiate the same part of the patient. In order to ensure the accuracy of each radiotherapy, the patient's body position needs to remain unchanged each time it is irradiated, so the patient needs to be fixed during radiotherapy.

[0003] In radiotherapy for chest tumors, there are currently two commonly used fixation techniques. One is the use of thermoplastic film plus body frame position fixation technology, and the other is the vacuum cushion position fixation technology. In the thermoplastic film plus body frame position fixation technology, medical staff need to first cover the patient with thermoplastic film, and then heat the thermoplastic film. The thermoplastic film will shrink and fit the patient's limbs. After a period of time, the thermoplastic film will harden, thereby fixing the patient's position. In the vacuum cushion position fixation technology, the patient needs to lie down, and then the medical staff will cover the patient's arm with a vacuum cushion, and then extract the gas in the vacuum cushion to fix the patient's position. However, both of these position fixation technologies are relatively cumbersome to operate, and the fixation process takes a lot of time, and is not convenient to use. Summary of the Invention

[0004] In view of this, the present invention provides a head, neck and arm fixation device for chest tumor radiotherapy, which can more conveniently fix the patient's arms and neck, and fix them more quickly, thereby reducing time waste.

[0005] A head, neck and arm fixation device for chest tumor radiotherapy includes a support, a cabin, an electric cylinder, a bed, a vertical spring, an arm fixation mechanism, a neck fixation mechanism and a locking mechanism. The top of the support is fixedly connected to the cabin, two electric cylinders are fixedly connected to the bottom of the inner wall of the cabin, and the two electric cylinders are symmetrically arranged. The upper part of the cabin is slidably connected to the bed, two vertical springs are fixedly connected between the cabin and the bed, and the two vertical springs are symmetrically arranged. Two square through slots are opened on the bed, the arm fixation mechanism is arranged on the bed, the neck fixation mechanism is arranged on the bed, and the locking mechanism is arranged on the cabin.

[0006] Optionally, the interior of the cabin is a hollow structure.

[0007] Optionally, the arm fixing mechanism includes a guide block, an arm fixing frame, an upper rack, a large gear and a lower rack. Two guide blocks are fixedly connected to the upper surface of the bed, and the two guide blocks are symmetrically arranged. Each guide block is slidably connected to an arm fixing frame, and the lower side of each arm fixing frame is fixedly connected to an upper rack. Two large gears are rotatably connected to the bed, and the large gears are meshed with the upper rack. Two lower racks are fixedly connected to the inner wall of the cabin, and the two lower racks are symmetrically arranged, and the lower racks are meshed with the large gears.

[0008] Optionally, the neck fixing mechanism includes a hydraulic cylinder, a short piston rod, a support rod, a compression spring, a liquid pipe, an arc cylinder and a neck fixing block. The lower side of the bed is fixedly connected to the hydraulic cylinder, and the short piston rod is slidably connected to the hydraulic cylinder. The bottom of the inner wall of the cabin is fixedly connected to the support rod, and the support rod and the short piston rod are slidably connected. A compression spring is fixedly connected between the support rod and the short piston rod. The bed is fixedly connected to the arc cylinder, and a liquid pipe is fixedly connected between the arc cylinder and the hydraulic cylinder, and the arc cylinder and the hydraulic cylinder are connected through the liquid pipe. Two neck fixing blocks are slidably connected in the arc cylinder, and the two neck fixing blocks are symmetrically arranged. The neck fixing block is a hollow structure, the neck fixing block is connected to the arc cylinder, and a ventilation groove is provided on the neck fixing block.

[0009] Optionally, the locking mechanism includes a trapezoidal support block, a pull-out handle, an extrusion spring and a rubber strip. Two trapezoidal support blocks are slidingly connected to the cabin, and the two trapezoidal support blocks are symmetrically arranged. Each of the trapezoidal support blocks is fixedly connected to the pull-out handle, and an extrusion spring is fixedly connected between each of the trapezoidal support blocks and the cabin. Several rubber strips are fixedly connected to the upper surface of each trapezoidal support block, and each of the rubber strips is in contact with the lower surface of the bed.

[0010] Optionally, a fitting mechanism is further included, which is arranged on the bed. The fitting mechanism includes a square cylinder, a magnetic piston rod, an air outlet square tube, a connecting square tube, a push spring, an air bag, an iron rod and a magnet ring. Two square cylinders are fixedly connected to the bed, and the two square cylinders are symmetrically arranged. Each of the square cylinders is slidably connected to a magnetic piston rod, and the two magnetic piston rods pass through the bed. Each of the square cylinders is fixedly connected to an air outlet square tube near one end of the liquid pipe, and each of the air outlet square tubes has two notches, and the air outlet square tubes are The gap is connected to the bed, the air outlet square tube is connected to the square cylinder, the air outlet square tube is in contact with the neck fixing block, each of the air outlet square tubes is slidably connected to the arc cylinder with a connecting square tube, each of the connecting square tubes is fixedly connected to the arc cylinder with two push springs, each of the neck fixing blocks is fixedly connected to an air bag, and the air bag is connected to the neck fixing block, each of the magnetic piston rods is fixedly connected to an iron rod at one end away from the liquid pipe, two magnet rings are fixedly connected to the bed, and the two magnet rings are symmetrically arranged, and the magnetic piston rod passes through the magnet ring.

[0011] Optionally, an adjustment mechanism is also included, which is arranged on the magnetic piston rod, and the adjustment mechanism includes a piston block, a hollow threaded rod, a small gear and a long rack. Each of the magnetic piston rods is slidably connected to a piston block, and each of the piston blocks is rotatably connected to a hollow threaded rod, and the magnetic piston rod passes through the hollow threaded rod, and each of the hollow threaded rods is threadedly connected to the square cylinder, and each of the hollow threaded rods is fixedly connected to a small gear at one end near the iron rod, and the magnetic piston rod passes through the small gear. Two long racks are fixedly connected to the bottom of the inner wall of the cabin, and the two long racks are symmetrically arranged, and the two long racks are respectively located under the two square through grooves of the bed.

[0012] Optionally, an automatic mechanism is also included, which is arranged on the bed. The automatic mechanism includes an electric slide rail, an electric slider and a magnet block. Two electric slide rails are fixedly connected to the bed, and the two electric slide rails are symmetrically arranged. Each of the electric slide rails is slidably connected to the electric slider, and the lower surface of each electric slider is fixedly connected to a magnet block, and the magnet block and the magnetic piston rod have opposite magnetism, and the magnet block and the magnetic piston rod will attract each other.

[0013] The beneficial effects of the present invention are: 1. The patient lies on the bed and places both arms under the two arm fixing frames respectively. The patient places the neck on the arc cylinder. Then the medical staff pulls the two pull-out handles away from each other. Under the action of gravity, the bed and the patient will move downward. The downward movement of the arm fixing frames will fix the patient's arms on the bed. The two neck fixing blocks will rotate to fix the patient's neck, thereby quickly fixing the patient's position, simplifying the fixation steps, reducing time waste, and making it more convenient for medical staff to use.

[0014] 2. After the neck fixing blocks rotate away from each other and stop rotating, the air outlet square tube is connected to the neck fixing block through the connecting square tube. The air outlet square tube is no longer connected to the atmosphere. After the bed stops moving downward, the medical staff pushes the iron rod toward the patient. The air in the square cylinder enters the airbag through the air outlet square tube, the connecting square tube and the neck fixing block in turn. The airbag will expand and fit tightly against the patient's neck. The expansion of the airbag will clamp the patient's neck tighter, thereby making the patient's neck more stable during chest tumor radiotherapy.

[0015] 3. The heavier the patient lies on the bed, the lower the bed will drop, causing more air in the square cylinder to be discharged. After the bed stops moving downward, the medical staff pushes the iron rod toward the neck fixing block. The iron rod pushes the magnetic piston rod, causing the remaining gas in the square cylinder to enter the airbag through the air outlet square tube, the connecting square tube and the neck fixing block in turn. The airbag will not fully inflate, so that when the patient is heavier, the airbag can fix the patient's neck with appropriate force, making it suitable for patients of different body sizes.

[0016] 4. The medical staff starts the electric slide rail, which drives the electric slider and the magnet block to move toward the neck fixing block. The movement of the magnet block drives the magnetic piston rod to move toward the neck fixing block, so that the remaining gas in the square cylinder enters the airbag through the air outlet square tube, the connecting square tube and the neck fixing block in turn. The airbag expands, thereby clamping the patient's neck, making it easier and faster to clamp the patient's neck, thereby facilitating the operation of the medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 This is a schematic diagram of a first partially cutaway three-dimensional structure of the arm fixing mechanism of the present invention.

[0019] Figure 3 This is a schematic diagram of a second partially cutaway three-dimensional structure of the arm fixing mechanism of the present invention.

[0020] Figure 4This is a schematic diagram of a first partially cutaway three-dimensional structure of the neck fixing mechanism of the present invention.

[0021] Figure 5 This is a schematic diagram of a second partially cutaway three-dimensional structure of the neck fixing mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram of a third partial cross-sectional three-dimensional structure of the neck fixing mechanism of the present invention.

[0023] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0024] Figure 8 It is a partially cutaway three-dimensional structural schematic diagram of the arm fixing mechanism, neck fixing mechanism and locking mechanism of the present invention.

[0025] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged three-dimensional structure of B in the figure.

[0026] Figure 10 It is a partially cutaway three-dimensional structural diagram of the adjustment mechanism of the present invention.

[0027] Figure 11 It is a partially cutaway three-dimensional structural diagram of the laminating mechanism and the adjusting mechanism of the present invention.

[0028] Figure 12 For the present invention Figure 11 Schematic diagram of the enlarged three-dimensional structure of C in the middle.

[0029] Figure 13 It is a schematic diagram of the cross-sectional three-dimensional structure of the arc cylinder of the present invention.

[0030] Figure 14 For the present invention Figure 13 Schematic diagram of the enlarged three-dimensional structure of D in the middle.

[0031] Figure 15 It is a schematic diagram of the cross-sectional three-dimensional structure of the bed of the present invention.

[0032] Figure 16 It is a partially cutaway three-dimensional structural diagram of the automatic mechanism of the present invention.

[0033] Markings in the accompanying drawings: 1: support, 2: cabin, 21: electric cylinder, 3: bed, 4: vertical spring, 51: guide block, 52: arm fixing frame, 53: upper rack, 54: large gear, 55: lower rack, 61: hydraulic cylinder, 62: short piston rod, 63: support rod, 64: compression spring, 65: liquid pipe, 66: arc cylinder, 67: neck fixing block, 71: trapezoidal support block, 72: pull-out handle, 73: extrusion spring, 74: rubber strip, 81: square cylinder, 82: magnetic piston rod, 83: air outlet square tube, 84: connecting square tube, 85: push spring, 86: air bag, 87: iron rod, 88: magnet ring, 91: piston block, 92: hollow threaded rod, 93: small gear, 94: long rack, 101: electric slide rail, 102: electric slider, 103: magnet block. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0035] Example 1 A head, neck and arm fixation device for chest tumor radiotherapy, such as Figures 1-9 As shown, it includes a support 1, a cabin 2, an electric cylinder 21, a bed 3, a vertical spring 4, an arm fixing mechanism, a neck fixing mechanism and a locking mechanism. The top of the support 1 is connected to the cabin 2 by bolts, and the interior of the cabin is a cavity structure. Two electric cylinders 21 are connected to the bottom of the inner wall of the cabin 2 by bolts, and the two electric cylinders 21 are symmetrically arranged. The upper part of the cabin 2 is slidably connected to the bed 3, and two vertical springs 4 are connected between the cabin 2 and the bed 3 by hooks, and the two vertical springs 4 are symmetrically arranged. Two square through slots are opened on the bed 3, the arm fixing mechanism is arranged on the bed 3, the neck fixing mechanism is arranged on the bed 3, and the locking mechanism is arranged on the cabin 2. The locking mechanism is used to support the bed 3.

[0036] The arm fixing mechanism includes a guide block 51, an arm fixing frame 52, an upper rack 53, a large gear 54 and a lower rack 55. The upper surface of the bed 3 is connected to two guide blocks 51 by bolts, and the two guide blocks 51 are symmetrically arranged. Each guide block 51 is slidably connected to an arm fixing frame 52, and the lower side of each arm fixing frame 52 is connected to an upper rack 53 by rivets. Two large gears 54 are rotatably connected to the bed 3, and the large gears 54 are engaged with the upper rack 53. Two lower racks 55 are connected to the inner wall of the cabin 2 by rivets, and the two lower racks 55 are symmetrically arranged, and the lower racks 55 are engaged with the large gear 54.

[0037] The neck fixing mechanism includes a hydraulic cylinder 61, a short piston rod 62, a support rod 63, a compression spring 64, a liquid pipe 65, an arc cylinder 66 and a neck fixing block 67. The lower side of the bed 3 is connected to the hydraulic cylinder 61 by bolts. The short piston rod 62 is slidably connected to the hydraulic cylinder 61. The bottom of the inner wall of the cabin 2 is fixedly connected to the support rod 63, and the support rod 63 is slidably connected to the short piston rod 62. The support rod 63 and the short piston rod 62 are connected by a hook with a compression spring 64. The bed 3 An arc cylinder 66 is connected to the upper portion by bolts, and a liquid pipe 65 is fixedly connected between the arc cylinder 66 and the hydraulic cylinder 61, and the arc cylinder 66 and the hydraulic cylinder 61 are communicated with the liquid pipe 65. Two neck fixing blocks 67 are slidably connected to the arc cylinder 66, and the two neck fixing blocks 67 are symmetrically arranged. The neck fixing block 67 is a hollow structure, and the neck fixing block 67 is communicated with the arc cylinder 66. A ventilation groove is provided on the neck fixing block 67, and the neck fixing block 67 is used to fix the patient's neck.

[0038] The locking mechanism includes a trapezoidal support block 71, a pull-out handle 72, an extrusion spring 73 and a rubber strip 74. Two trapezoidal support blocks 71 are slidingly connected to the cabin 2, and the two trapezoidal support blocks 71 are symmetrically arranged. Each of the trapezoidal support blocks 71 is connected to the pull-out handle 72 by a bolt, and each of the trapezoidal support blocks 71 and the cabin 2 are connected to an extrusion spring 73 by a hook. Several rubber strips 74 are fixedly connected to the upper surface of each trapezoidal support block 71, and each of the rubber strips 74 is in contact with the lower surface of the bed 3.

[0039] Initially, the spaces between the hydraulic cylinder 61, the liquid passage 65, and the two inner neck fixing blocks 67 are all filled with hydraulic oil. In actual use, the patient lies on the bed 3 and places his two arms under the two arm fixing frames 52 respectively, and the patient places his neck on the arc cylinder 66. Then, the medical staff pulls the two pull-out handles 72 away from each other, and the two pull-out handles 72 drive the two trapezoidal support blocks 71 and the rubber strip 74 to move away from each other, the extrusion spring 73 is compressed, and the trapezoidal support blocks 71 and the rubber strip 74 move away from each other. Moving in a direction away from each other will cause the patient to lose contact with the bed 3. Under the action of gravity, the bed 3 and the patient will move downward, and the vertical spring 4 will be compressed. The downward movement of the bed 3 will drive the guide block 51, the arm fixing frame 52, the upper rack 53, the large gear 54, the hydraulic cylinder 61, the liquid pipe 65, the arc cylinder 66 and the neck fixing block 67 to move downward. The large gear 54 moves downward and contacts and meshes with the lower rack 55. The large gear 54 continues to move downward and rotates. The rotation of the large gear 54 drives the upper rack 53 and the arm fixing frame 52 to move downward. The downward movement of the arm fixing frame 52 will fix the patient's arm on the bed 3. When the hydraulic cylinder 61 moves downward, the short piston rod 62 will squeeze the hydraulic oil in the hydraulic cylinder 61 into the space between the two neck fixing blocks 67 through the liquid pipe 65. The hydraulic oil will squeeze the two neck fixing blocks 67 to move away from each other. After the two neck fixing blocks 67 move, the patient's neck is fixed, thereby quickly fixing the patient's position, simplifying the fixation steps, and making it more convenient for medical staff to use. After the two neck fixing blocks 67 move to a stop, the hydraulic oil in the hydraulic cylinder 61 is no longer squeezed into the space between the two neck fixing blocks 67 through the liquid pipe 65. The hydraulic oil will squeeze the short piston rod 62 downward, the compression spring 64 is compressed, and then the bed 3 will stop moving downward. The medical staff releases the pull-out handle 72, and the compression spring 73 resets. The reset of the compression spring 73 drives the two pull-out handles 72, the two trapezoidal support blocks 71 and the rubber strip 74 to move toward each other and reset. Then the medical staff can perform chest tumor radiotherapy on the patient.

[0040] After the medical staff completes the radiotherapy for the chest tumor on the patient, the medical staff starts the electric cylinder 21. The telescopic rod of the electric cylinder 21 moves upward and contacts the lower surface of the bed 3. The telescopic rod of the electric cylinder 21 continues to move upward to push the bed 3 and the patient upward. The vertical spring 4 is reset. The upward movement of the bed 3 drives the guide block 51, the arm fixing frame 52, the upper rack 53, the large gear 54, the hydraulic cylinder 61, the liquid pipe 65, the arc cylinder 66 and the neck fixing block 67 to move upward, and the compression spring 64 is reset. The short piston rod 62 is reset and pushes the short piston rod 62 to move upward and reset. After the compression spring 64 is reset, the short piston rod 62 no longer moves upward, and the hydraulic cylinder 61 continues to move upward. The short piston rod 62 draws the hydraulic oil between the two neck fixing blocks 67 back into the hydraulic cylinder 61 through the liquid pipe 65. The two neck fixing blocks 67 will move toward each other and reset. The two neck fixing blocks 67 no longer fix the patient's neck. Since the large gear 54 is engaged with the lower rack 55, the large gear 54 will rotate in the opposite direction while moving upward. The gear 54 rotates in the opposite direction to drive the upper rack 53 and the arm fixing frame 52 to move upward. The arm fixing frame 52 no longer fixes the patient's arm. The large gear 54 continues to move upward until it is out of contact with the lower rack 55. The large gear 54 stops rotating. The large gear 54, the upper rack 53 and the arm fixing frame 52 continue to move upward and reset. The bed 3 continues to move upward and will contact the trapezoidal support block 71. The bed 3 continues to move upward and will squeeze the two trapezoidal support blocks 71 to move away from each other. The movement of the two trapezoidal support blocks 71 in the direction of moving away from each other will drive the two pulling handles 72 and the rubber strip 74 to move away from each other. The squeezing spring 73 is compressed, and the bed 3 continues to move upward and reset and will be out of contact with the trapezoidal support block 71. The squeezing spring 73 is reset. The squeezing spring 73 resets and drives the two pulling handles 72, the two trapezoidal support blocks 71 and the rubber strip 74 to move in the direction of moving towards each other and reset. The rubber strip 74 contacts the lower surface of the bed 3 again, and then the patient leaves the bed 3. The telescopic rod of the electric cylinder 21 moves in the opposite direction and resets.

[0041] Example 2 On the basis of Example 1, Figure 11-14As shown, it also includes a fitting mechanism, which is arranged on the bed 3. The fitting mechanism includes a square cylinder 81, a magnetic piston rod 82, an air outlet square tube 83, a connecting square tube 84, a push spring 85, an air bag 86, an iron rod 87 and a magnet ring 88. Two square cylinders 81 are connected to the bed 3 by bolts, and the two square cylinders 81 are symmetrically arranged. Each of the square cylinders 81 is slidably connected to the magnetic piston rod 82, and the two magnetic piston rods 82 pass through the bed 3. Each of the square cylinders 81 is connected to the air outlet square tube 83 by rivets at one end near the liquid pipe 65, and each of the air outlet square tubes 83 has two notches, and the notches of the air outlet square tubes 83 are connected to the bed 3. The square air tube 83 is connected to the square air cylinder 81, and the air outlet square tube 83 is in contact with the neck fixing block 67. A connecting square tube 84 is slidably connected between each of the air outlet square tubes 83 and the arc cylinder 66. Two push springs 85 are connected to each of the connecting square tubes 84 and the arc cylinder 66 through a hook. An air bag 86 is fixedly connected to each of the neck fixing blocks 67. The air bag 86 is used to clamp the patient's neck, and the air bag 86 is connected to the neck fixing block 67. Each of the magnetic piston rods 82 is connected to an iron rod 87 by a bolt at one end away from the liquid tube 65. Two magnet rings 88 are fixedly connected to the bed 3, and the two magnet rings 88 are symmetrically arranged. The magnetic piston rod 82 passes through the magnet ring 88.

[0042] At first, due to the squeezing of the connecting square tube 84 by the neck fixing block 67, the pushing spring 85 is in a compressed state. After the neck fixing block 67 moves away from each other and stops moving, the connecting square tube 84 is opposite to the vent groove on the neck fixing block 67. The connecting square tube 84 will break away from the contact with the neck fixing block 67. The neck fixing block 67 no longer squeezes the connecting square tube 84, and the pushing spring 85 is reset. The pushing spring 85 resets and drives the connecting square tube 84 to move in the direction close to the neck fixing block 67. After the movement, the connecting square tube 84 will contact the neck fixing block 67 again. At this time, the connecting square tube 84 The through square tube 84 is located in the ventilation groove of the neck fixing block 67, the air outlet square tube 83 is connected to the connecting square tube 84, and the neck fixing block 67 is connected to the connecting square tube 84. After the bed 3 stops moving downward, the medical staff pushes the iron rod 87 in the direction close to the patient. The movement of the iron rod 87 in the direction close to the patient will drive the magnetic piston rod 82 to move in the direction close to the patient. The magnetic piston rod 82 will squeeze the air in the square cylinder 81. The air in the square cylinder 81 passes through the air outlet square tube 83, the connecting square tube 84 and the neck fixing block 67 in turn into the airbag 86. The airbag 86 will The airbag 86 expands, and the airbag 86 fits tightly against the patient's neck. The expansion of the airbag 86 will clamp the patient's neck more tightly, so that the patient's neck can be more stable during chest tumor radiotherapy. The iron rod 87 moves in the direction close to the patient and contacts the magnetic ring 88. The magnetic ring 88 attracts the iron rod 87, making the iron rod 87 more stable. After the medical staff completes the radiotherapy, the medical staff pulls the iron rod 87 away from the patient, and the iron rod 87 is out of contact with the magnetic ring 88. The movement of the iron rod 87 in the direction away from the patient will drive the magnetic piston rod 82 away from the patient. The magnetic piston rod 82 moves in the direction away from the patient, and the air in the airbag 86 is drawn back into the square cylinder 81 through the neck fixing block 67, the connecting square tube 84 and the air outlet square tube 83 in sequence. The airbag 86 will shrink and no longer clamp the patient's neck. The neck fixing block 67 moves in the direction of approaching each other and resets, squeezing the connecting square tube 84 to move closer to the square cylinder 81, pushing the spring 85 to be compressed, and the air outlet square tube 83 is no longer connected to the neck fixing block 67 through the connecting square tube 84, and the air outlet square tube 83 is connected to the bed 3 again.

[0043] Example 3 On the basis of Example 2, Figure 10-12As shown, it also includes an adjustment mechanism, which is arranged on the magnetic piston rod 82. The adjustment mechanism includes a piston block 91, a hollow threaded rod 92, a pinion 93 and a long rack 94. Each of the magnetic piston rods 82 is slidably connected to a piston block 91, and each of the piston blocks 91 is rotatably connected to a hollow threaded rod 92, and the magnetic piston rod 82 passes through the hollow threaded rod 92. Each of the hollow threaded rods 92 is threadedly connected to the square cylinder 81, and each of the hollow threaded rods 92 is fixedly connected to a pinion 93 at one end near the iron rod 87, and the magnetic piston rod 82 passes through the pinion 93. The bottom of the inner wall of the cabin 2 is connected to two long racks 94 by bolts, and the two long racks 94 are symmetrically arranged, and the two long racks 94 are respectively located under the two square through grooves of the bed 3.

[0044] Patients with heavier weight usually have thicker necks. The downward movement of the bed 3 will drive the piston block 91, the hollow threaded rod 92 and the small gear 93 to move downward together. The small gear 93 will contact and mesh with the long rack 94 when it moves downward. The small gear 93 will continue to move downward and rotate. The rotation of the small gear 93 will drive the hollow threaded rod 92 to rotate. The rotation of the hollow threaded rod 92 will drive the piston block 91 and the small gear 93 to move in the direction close to the neck fixing block 67. The movement of the piston block 91 in the direction close to the neck fixing block 67 will drive the magnetic piston rod 82 to move in the direction close to the neck fixing block 67. The magnetic piston rod 82 will squeeze the air in the square cylinder 81 into the bed 3 through the air outlet square tube 83, thereby reducing the air in the square cylinder 81. The heavier the patient lying on the bed 3, the lower the bed 3 will drop, thereby causing more air in the square cylinder 81 to be discharged. After the bed 3 stops moving downward, the medical staff pushes the iron rod 87 in the direction close to the neck fixing block 67. The iron rod 87 pushes the magnetic piston rod 82, so that the remaining gas in the square cylinder 81 passes through the air outlet square tube 83, the connecting square tube 84 and the neck fixing block 67 in turn into the air bag 86. The air bag 86 will not The airbag 86 is fully expanded, so that when the patient is heavy, the airbag 86 can fix the patient's neck with appropriate force, so that it is suitable for patients of different body shapes. Then the medical staff performs chest tumor radiotherapy on the patient. After the medical staff completes the chest tumor radiotherapy on the patient, the medical staff pulls the iron rod 87 in the direction away from the neck fixing block 67. The iron rod 87 drives the magnetic piston rod 82 to move in the direction away from the neck fixing block 67, so that the gas in the airbag 86 passes through the neck fixing block 67, the connecting square tube 84 and the air outlet square tube 83 in turn into the square cylinder 81, and the electric cylinder 21 is extended and retracted. When the rod pushes the bed 3 to rise, the bed 3 drives the hollow threaded rod 92 to move upward, and the hollow threaded rod 92 will rotate in the opposite direction. The reverse rotation of the hollow threaded rod 92 will drive the piston block 91 and the pinion 93 to move in the direction away from the neck fixing block 67 to reset. The hollow threaded rod 92 continues to move upward and will break away from the contact with the long rack 94. When the patient leaves the bed 3, the medical staff pulls the iron rod 87 in the direction away from the neck fixing block 67. The movement of the iron rod 87 drives the magnetic piston rod 82 to move. The movement of the magnetic piston rod 82 allows the air in the bed 3 to enter the square cylinder 81 through the connecting square tube 84.

[0045] Example 4 On the basis of Example 3, Figures 11-16As shown, an automatic mechanism is also included, which is arranged on the bed 3. The automatic mechanism includes an electric slide rail 101, an electric slider 102 and a magnet block 103. Two electric slide rails 101 are connected in the bed 3 by bolts, and the two electric slide rails 101 are symmetrically arranged. Each of the electric slide rails 101 is slidably connected to the electric slider 102, and the lower surface of each electric slider 102 is connected to the magnet block 103 by bolts, and the magnet block 103 and the magnetic piston rod 82 have opposite magnetism, and the magnet block 103 and the magnetic piston rod 82 will attract each other.

[0046] After the bed 3 stops moving downward, the medical staff starts the electric slide 101, which drives the electric slide 102 and the magnet block 103 to move in the direction close to the neck fixing block 67. After the magnet block 103 moves above the magnetic piston rod 82, the magnet block 103 continues to move in the direction close to the neck fixing block 67. The continued movement of the magnet block 103 drives the magnetic piston rod 82 to move in the direction close to the neck fixing block 67, so that the remaining gas in the square cylinder 81 passes through the gas outlet square pipe 83, the connecting square pipe 84 and the neck fixing block 67 in turn into the air bag 86, and the air bag 86 expands, thereby clamping the patient's neck, thereby making it more convenient to clamp the patient's neck and further quickly clamp the patient's neck, thereby facilitating the operation of the medical staff. After the remaining gas in the square cylinder 81 is completely discharged, the electric slide 101 will be closed, and the electric slide 101 will no longer drive the electric slide 102 and the magnet block 103 to move in the direction close to the neck fixing block 67. The iron block 103 no longer drives the magnetic piston rod 82 to move in the direction close to the neck fixing block 67. After completing the chest tumor radiotherapy, the medical staff starts the electric slide 101 again. The electric slide 101 will drive the electric slider 102 and the magnet block 103 to move in the direction away from the neck fixing block 67. The movement of the magnet block 103 will drive the magnetic piston rod 82 to move in the direction away from the neck fixing block 67, so that the gas in the airbag 86 passes through the neck fixing block 67, the connecting square tube 84 and the air outlet square tube 83 in turn into the square cylinder 81. After the magnetic piston rod 82 moves in the direction away from the neck fixing block 67 and contacts the piston block 91, the magnetic piston rod 82 no longer moves in the direction away from the neck fixing block 67. The electric slide 101 drives the electric slider 102 and the magnet block 103 to continue to move in the direction away from the neck fixing block 67 to reset. After the electric slider 102 and the magnet block 103 move in the direction away from the neck fixing block 67 and complete the reset, the electric slide 101 will close.

[0047] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A head, neck and arm fixation device for chest tumor radiotherapy, characterized in that: The invention comprises a support (1), a cabin (2), an electric cylinder (21), a bed (3), a vertical spring (4), an arm fixing mechanism, a neck fixing mechanism and a locking mechanism, wherein the top of the support (1) is fixedly connected to the cabin (2), two electric cylinders (21) are fixedly connected to the bottom of the inner wall of the cabin (2), and the two electric cylinders (21) are symmetrically arranged, the upper part of the cabin (2) is slidably connected to the bed (3), two vertical springs (4) are fixedly connected between the cabin (2) and the bed (3), and the two vertical springs (4) are symmetrically arranged, the bed (3) is provided with two square through slots, the arm fixing mechanism is arranged on the bed (3), the neck fixing mechanism is arranged on the bed (3), and the locking mechanism is arranged on the cabin (2).

2. A head, neck and arm fixation device for chest tumor radiotherapy according to claim 1, characterized in that: The interior of the cabin (2) is a hollow structure.

3. A head, neck and arm fixation device for chest tumor radiotherapy according to claim 1, characterized in that: The arm fixing mechanism comprises a guide block (51), an arm fixing frame (52), an upper rack (53), a large gear (54) and a lower rack (55); the upper surface of the bed (3) is fixedly connected to two guide blocks (51), and the two guide blocks (51) are symmetrically arranged; each guide block (51) is slidably connected to an arm fixing frame (52); the lower side of each arm fixing frame (52) is fixedly connected to an upper rack (53); the bed (3) is rotatably connected to two large gears (54), and the large gears (54) are meshed with the upper rack (53); the inner wall of the cabin (2) is fixedly connected to two lower racks (55), and the two lower racks (55) are symmetrically arranged, and the lower racks (55) are meshed with the large gears (54).

4. A head, neck and arm fixation device for chest tumor radiotherapy according to claim 2, characterized in that: The neck fixing mechanism comprises a hydraulic cylinder (61), a short piston rod (62), a support rod (63), a compression spring (64), a liquid passage pipe (65), an arc cylinder (66) and a neck fixing block (67); the lower side of the bed (3) is fixedly connected to the hydraulic cylinder (61); the short piston rod (62) is slidably connected to the hydraulic cylinder (61); the bottom of the inner wall of the cabin (2) is fixedly connected to the support rod (63); the support rod (63) and the short piston rod (62) are slidably connected; a compression spring (64) is fixedly connected between the support rod (63) and the short piston rod (62); A spring (64) is fixedly connected to the bed (3); a liquid pipe (65) is fixedly connected between the arc cylinder (66) and the hydraulic cylinder (61); the arc cylinder (66) and the hydraulic cylinder (61) are communicated with each other through the liquid pipe (65); two neck fixing blocks (67) are slidably connected inside the arc cylinder (66); the two neck fixing blocks (67) are symmetrically arranged; the neck fixing blocks (67) are hollow structures; the neck fixing blocks (67) are communicated with the arc cylinder (66); and a ventilation groove is provided on the neck fixing blocks (67).

5. A head, neck and arm fixation device for chest tumor radiotherapy according to claim 3, characterized in that: The locking mechanism comprises a trapezoidal support block (71), a pull-out handle (72), a compression spring (73) and a rubber strip (74); the cabin (2) is slidably connected to two trapezoidal support blocks (71), and the two trapezoidal support blocks (71) are symmetrically arranged; each of the trapezoidal support blocks (71) is fixedly connected to a pull-out handle (72); each of the trapezoidal support blocks (71) and the cabin (2) are fixedly connected to a compression spring (73); the upper surface of each of the trapezoidal support blocks (71) is fixedly connected to a plurality of rubber strips (74), and each of the rubber strips (74) is in contact with the lower surface of the bed (3).

6. A head, neck and arm fixation device for chest tumor radiotherapy according to claim 4, characterized in that: The invention also comprises a fitting mechanism, which is arranged on the bed (3), and comprises a square cylinder (81), a magnetic piston rod (82), an air outlet square tube (83), a connecting square tube (84), a pushing spring (85), an air bag (86), an iron rod (87) and a magnet ring (88). Two square cylinders (81) are fixedly connected to the bed (3), and the two square cylinders (81) are symmetrically arranged. Each of the square cylinders (81) is slidably connected to a magnetic piston rod (82), and the two magnetic piston rods (82) pass through the bed (3). Each of the square cylinders (81) is fixedly connected to an air outlet square tube (83) at one end close to the liquid passage tube (65), and each of the air outlet square tubes (83) has two notches, and the notches of the air outlet square tubes (83) are aligned with the bed (3). The square air outlet tube (83) is connected to the square air cylinder (81), the square air outlet tube (83) is in contact with the neck fixing block (67), a connecting square tube (84) is slidably connected between each of the square air outlet tubes (83) and the arc cylinder (66), two pushing springs (85) are fixedly connected between each of the connecting square tubes (84) and the arc cylinder (66), an air bag (86) is fixedly connected to each of the neck fixing blocks (67), and the air bag (86) is connected to the neck fixing block (67), and an iron rod (87) is fixedly connected to one end of each of the magnetic piston rods (82) away from the liquid passage tube (65), and two magnet rings (88) are fixedly connected to the bed (3), and the two magnet rings (88) are symmetrically arranged, and the magnetic piston rod (82) passes through the magnet ring (88).

7. A head, neck and arm fixation device for chest tumor radiotherapy according to claim 5, characterized in that: The invention also comprises an adjusting mechanism, which is arranged on the magnetic piston rod (82), and comprises a piston block (91), a hollow threaded rod (92), a pinion (93) and a long rack (94). Each of the magnetic piston rods (82) is slidably connected to the piston block (91), and each of the piston blocks (91) is rotatably connected to the hollow threaded rod (92), and the magnetic piston rod (82) passes through the hollow threaded rod (92). Each of the hollow threaded rods (92) is connected to the square cylinder (81) by a thread, and each of the hollow threaded rods (92) is fixedly connected to a pinion (93) at one end close to the iron rod (87), and the magnetic piston rod (82) passes through the pinion (93). Two long racks (94) are fixedly connected to the bottom of the inner wall of the cabin (2), and the two long racks (94) are symmetrically arranged. The two long racks (94) are respectively located below two square through grooves of the bed (3).

8. The head, neck and arm fixation device for chest tumor radiotherapy according to claim 6, characterized in that: The invention also comprises an automatic mechanism, which is arranged on the bed (3), and comprises an electric slide rail (101), an electric slider (102) and a magnet block (103). Two electric slide rails (101) are fixedly connected inside the bed (3), and the two electric slide rails (101) are symmetrically arranged. Each of the electric slide rails (101) is slidably connected to an electric slider (102), and the lower surface of each electric slider (102) is fixedly connected to a magnet block (103). The magnet block (103) and the magnetic piston rod (82) have opposite magnetic properties, and the magnet block (103) and the magnetic piston rod (82) are attracted to each other.

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