Vertical fixing device for radiotherapy

Abstract

The invention discloses a vertical fixing device for radiotherapy, and relates to the technical field of medical instruments. Comprising a circular truncated cone, a seat, a leg support, a circular truncated cone rotating mechanism, a circular truncated cone lifting mechanism, a left-right moving mechanism, a seat front-back moving mechanism, a leg support front-back moving mechanism, a seat plate rotating mechanism and a back plate adjusting mechanism. The seat comprises a seat frame, a seat plate and a back plate; one end of the seat plate is rotatably connected with the chair frame, and the other end is rotatably connected with the back plate. According to the invention, multi-degree-of-freedom adjustment can be carried out, multiple body positions such as a standing posture, a sitting posture and a lying posture can be realized, and radiation therapy can be conveniently carried out for different patients.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a vertical fixing device for radiotherapy. Background Art

[0002] Radiotherapy is a method of treating tumors using radiation. The radiation includes α-rays, β-rays, γ-rays, and various x-rays, mainly including rays such as electron beams and proton beams generated by accelerators. Radiotherapy can preserve the integrity of the structure and function of the patient's organs, and combined with other methods, good treatment effects can be achieved, which can relieve the pain and discomfort of patients. Radiotherapy is usually used to treat various malignant tumors, such as lung cancer, breast cancer, liver cancer, gastric cancer, cervical cancer, etc.

[0003] In the prior art, during radiotherapy, patients usually lie flat on the treatment bed and adopt a supine or lateral position to receive radiation. However, for some special patients, it is impossible to adopt a supine or lateral position, resulting in difficulties in radiotherapy. Therefore, there is an urgent need for a multi-position radiotherapy fixing device. Summary of the Invention

[0004] The main purpose of the present invention is to provide a vertical fixing device for radiotherapy to solve the above problems.

[0005] To achieve the above object, the present invention provides a vertical fixing device for radiotherapy, including

[0006] A frustum

[0007] A seat disposed on the frustum; the seat includes a chair frame, a seat board, and a back board; one end of the seat board is rotatably connected to the chair frame, and the other end is rotatably connected to the back board;

[0008] A leg rest disposed on the frustum and opposite to the seat, for supporting or clamping the legs;

[0009] A frustum rotation mechanism disposed at the bottom of the frustum, for driving the frustum to perform a rotational movement;

[0010] A frustum lifting mechanism disposed at the bottom of the frustum rotation mechanism, for driving the frustum to perform a lifting movement;

[0011] A left-right movement mechanism disposed inside the frustum, for driving the seat and the leg rest to perform a left-right movement;

[0012] A seat front-back movement mechanism disposed on the left-right movement mechanism, for adjusting the front-back position of the seat;

[0013] A leg rest front-back movement mechanism disposed on the frustum, for adjusting the front-back position of the leg rest;

[0014] A seat board rotating mechanism is arranged on the chair frame and is used to adjust the rotation angle of the seat board;

[0015] A backrest adjusting mechanism is used to adjust the tilt angle of the backrest.

[0016] Furthermore, the frustum lifting mechanism includes a base, a four-link worm gear lift, and a lifting flat plate; the four-link worm gear lift is fixed on the base, and the lifting flat plate is installed on the four lifting rods of the four-link worm gear lift; a support column is fixedly arranged on one side of the base, and a first driving wheel and a first driven wheel are respectively rotatably arranged at the upper and lower ends on one side of the support column, and the first driving wheel and the first driven wheel are power-connected through a first synchronous belt; a first hand wheel is coaxially and fixedly arranged on the first driving wheel; the input shaft of the four-link worm gear lift is fixedly connected with the first driven wheel.

[0017] Furthermore, the frustum rotating mechanism includes a slewing bearing, a gear, a spline shaft, and a bushing; the slewing bearing is fixed on the lifting flat plate, the rotating ring of the slewing bearing is fixed at the bottom of the frustum, the gear is rotatably arranged on the lifting flat plate and meshes with the rotating ring of the slewing bearing; the upper end of the spline shaft is coaxially and fixedly connected with the gear; the spline shaft penetrates through the bushing; the bushing is rotatably arranged on the base, and a second driven wheel is fixedly arranged outside the bushing; a transmission shaft is rotatably arranged on one side of the support column, a second hand wheel is arranged at the upper end of the transmission shaft, and a second driving wheel is arranged at the lower end of the transmission shaft; the second driving wheel and the second driven wheel are power-connected through a second synchronous belt.

[0018] Furthermore, the frustum includes a bottom plate, a top plate, a surrounding plate, and a plurality of support plates; the bottom plate and the top plate are connected by a plurality of support plates, and the surrounding plate is fixedly arranged around the edges of the bottom plate and the top plate; a square mounting hole is arranged on the top plate.

[0019] Furthermore, the left-right moving mechanism includes a first slide rail, a first slider, a first lead screw, a first lead screw pair, and a moving plate; the first slide rail is fixedly arranged on the bottom plate, the first slider is slidably arranged on the first slide rail, the first lead screw is rotatably arranged on the bottom plate, and the first lead screw is arranged parallel to the first slide rail; the first lead screw pair is arranged in cooperation with the first lead screw, and the moving plate is fixedly connected to the tops of the first slider and the first lead screw pair; a third driven wheel is arranged at one end of the first lead screw; a first vertical plate is arranged on the top plate, a third driving wheel is rotatably arranged on the first vertical plate, and a third hand wheel is coaxially and fixedly arranged on the third driving wheel; the third driving wheel and the third driven wheel are power-connected through a third synchronous belt.

[0020] Further, the front-back movement mechanism of the seat includes a second slide rail, a second slider, a second lead screw, and a second lead screw nut; the second slide rail is fixedly arranged on the moving plate, the second slider is slidably arranged on the second slide rail, the second lead screw is rotatably arranged on the moving plate, and the second lead screw is arranged parallel to the second slide rail; the second lead screw nut is cooperatively arranged on the second lead screw, and the second lead screw nut is fixedly connected to the second slider; one end of the second lead screw is provided with a fourth driven wheel; a second vertical plate is arranged on the moving plate, a fourth driving wheel is rotatably arranged on the second vertical plate, and a fourth hand wheel is coaxially and fixedly arranged on the fourth driving wheel; the fourth driving wheel and the fourth driven wheel are power-connected through a fourth synchronous belt; the chair frame is installed on the second slider.

[0021] Further, side sealing plates are installed on both sides of the moving plate, end plates are installed at both ends of the moving plate, a top sealing plate is installed at the top between the end plates, and a sliding groove is left between the side sealing plates and the top sealing plate; chain plates are connected to the opposite sides of the two side sealing plates; the chain plates are supported by two clamping plates arranged on the bottom plate, and the clamping plates are provided with special-shaped sliding grooves for accommodating the side edges of the chain plates; the chain plates and the top sealing plate close the square installation holes on the top plate.

[0022] Further, the front-back movement mechanism of the leg rest includes a third slider, a closed belt, a first closed-belt guide block, a second closed-belt guide block, a cam, a camshaft, and a handle; the third slider is slidably arranged on the second slide rail, the first closed-belt guide block is installed on the third slider, and the leg rest is installed on the first closed-belt guide block; the chair frame is installed on the second slider through the second closed-belt guide block; a camshaft is rotatably arranged on the leg rest, the cam is installed on the camshaft, and the handle is installed at one end of the camshaft and located on one side of the leg rest; both ends of the closed belt are respectively installed on the end plates at both ends of the moving plate and cover the sliding groove; the lower ends of the first closed-belt guide block and the second closed-belt guide block are both slidably arranged in the sliding groove, the upper ends of the first closed-belt guide block and the second closed-belt guide block are both provided with guide grooves, and the closed belt passes through the guide grooves of the first closed-belt guide block and the second closed-belt guide block; four guide rollers are rotatably arranged in the guide groove of the first closed-belt guide block, and the central connection lines of the four guide rollers are trapezoidally arranged, and the closed belt is wound around the four guide rollers; the cam is located in the guide groove of the first closed-belt guide block; a vertically arranged sliding hole is arranged in the guide groove, a brake rod is slidably arranged in the sliding hole, the bottom of the brake rod contacts the top of the second slide rail, and the cam can squeeze the top of the brake rod.

[0023] Further, the seat board rotation mechanism includes a driving rod, a support rod, a driving shaft, a fifth handwheel, a worm gear reducer, a connecting rod, and a right-angle connecting piece; the driving rod, the support rod, and the driving shaft are all rotatably arranged in the chair frame and are arranged in parallel; the support rod is located below the driving rod; one end of the driving shaft is connected to the fifth handwheel, and the other end is equipped with a driving bevel gear; the fifth handwheel is located on one side of the chair frame; the worm gear reducer is installed in the chair frame, and the worm input end of the worm gear reducer is provided with a driven bevel gear meshing with the driving bevel gear; the driving rod is installed in the worm wheel of the worm gear reducer; one end of the seat board is fixedly installed on the driving rod, and right-angle connecting pieces are installed on both sides of the other end; the middle of the right-angle connecting piece is rotatably connected to the seat board; two connecting rods are hinged on the support rod, and the ends of the two connecting rods are respectively hinged to the lower ends of the two right-angle connecting pieces; the backrest adjustment mechanism is installed at the upper end of the right-angle connecting piece, and the backrest is installed on the backrest adjustment mechanism.

[0024] Further, the backrest adjustment mechanism adopts an angle adjuster.

[0025] The present invention has the following beneficial effects:

[0026] The present invention can be adjusted with multiple degrees of freedom, can realize multiple postures such as standing, sitting, and lying, and is convenient for radiotherapy of different patients. Description of the Drawings

[0027] Figure 1 It is an overall schematic diagram of a vertical fixing device for radiotherapy of the present invention.

[0028] Figure 2 It is a skeleton schematic diagram of a vertical fixing device for radiotherapy of the present invention.

[0029] Figure 3 It is a schematic diagram of a turntable rotation mechanism of a vertical fixing device for radiotherapy of the present invention.

[0030] Figure 4 It is a schematic diagram of a turntable rotation mechanism of a vertical fixing device for radiotherapy of the present invention.

[0031] Figure 5 It is a schematic diagram of a turntable of a vertical fixing device for radiotherapy of the present invention.

[0032] Figure 6 It is a schematic diagram of a left and right movement mechanism, a seat front and back movement mechanism, and a leg rest front and back movement mechanism of a vertical fixing device for radiotherapy of the present invention.

[0033] Figure 7 It is a cross-sectional view of a first closed belt guide block of a vertical fixing device for radiotherapy of the present invention.

[0034] Figure 8Schematic diagram of the seat board rotation mechanism of a vertical fixing device for radiotherapy according to the present invention.

[0035] Among them, 1 - base pit; 2 - cover plate; 3 - frustum; 4 - seat; 5 - leg rest; 6 - frustum lifting mechanism; 7 - frustum rotating mechanism; 8 - left - right moving mechanism; 9 - seat front - rear moving mechanism; 10 - leg rest front - rear moving mechanism; 11 - seat board rotation mechanism; 12 - back board adjustment mechanism; 31 - top plate; 32 - enclosing board; 33 - bottom plate; 34 - support plate; 35 - square mounting hole; 36 - chain plate; 37 - clamping plate; 38 - special - shaped sliding groove; 41 - chair frame; 42 - seat board; 43 - back board; 44 - heat - insulating layer; 51 - through - hole; 52 - rotating roller; 53 - support frame; 54 - impurity adsorption belt; 55 - sealing plate; 56 - wiping sponge; 61 - base; 62 - four - linkage worm gear lift; 63 - input shaft; 64 - support column; 65 - first driven wheel; 66 - first synchronous belt; 67 - first hand wheel; 68 - first driving wheel; 69 - lifting flat plate; 71 - bushing; 72 - second driven wheel; 73 - spline shaft; 74 - second synchronous belt; 75 - second driving wheel; 76 - transmission shaft; 77 - second hand wheel; 78 - gear; 79 - slewing bearing; 80 - first slider; 81 - third driving wheel; 82 - third hand wheel; 83 - first vertical plate; 84 - third synchronous belt; 85 - first lead screw pair; 86 - moving plate; 87 - first lead screw; 88 - third driven wheel; 89 - first slide rail; 91 - fourth hand wheel; 92 - fourth driving wheel; 93 - fourth synchronous belt; 94 - fourth driven wheel; 95 - second lead screw pair; 96 - second lead screw; 97 - second slider; 98 - second slide rail; 99 - second vertical plate; 101 - third slider; 102 - first closed - belt guide block; 103 - camshaft; 104 - handle; 105 - closed belt; 106 - second closed - belt guide block; 111 - drive shaft; 112 - support rod; 113 - drive rod; 114 - fifth hand wheel; 115 - connecting rod; 116 - right - angled connecting piece; 117 - driving bevel gear; 118 - driven bevel gear; 119 - worm gear reducer; 1021 - guide groove; 1022 - slide hole; 1023 - brake rod; 1024 - guide roller; 1025 - cam; 861 - side sealing plate; 862 - top sealing plate; 863 - end plate; 864 - sliding groove. Detailed implementation manners

[0036] To achieve the above - mentioned purpose and effect, the technical means and structure adopted by the present invention are described in detail below in conjunction with the drawings for the preferred embodiments of the present invention to illustrate their features and functions.

[0037] As Figures 1 - 8 shown, the present invention provides a vertical fixing device for radiotherapy, including

[0038] a frustum 3,

[0039] A seat 4 is provided on the frustum 3; the seat 4 includes a chair frame 41, a seat board 42 and a backrest 43; one end of the seat board 42 is rotatably connected to the chair frame 41, and the other end is rotatably connected to the backrest 43;

[0040] A leg rest 5 is provided on the frustum 3 and is arranged opposite to the seat 4 for supporting or clamping the legs;

[0041] A frustum rotating mechanism 7 is provided at the bottom of the frustum 3 for driving the frustum 3 to rotate; the frustum rotating mechanism 7 is arranged in the base pit 1, and the top of the base pit 1 is covered by a cover plate 2;

[0042] A frustum lifting mechanism 6 is provided at the bottom of the frustum rotating mechanism 7 for driving the frustum 3 to move up and down;

[0043] A left - right moving mechanism 8 is provided inside the frustum 3 for driving the seat 4 and the leg rest 5 to move left and right;

[0044] A seat front - rear moving mechanism 9 is provided on the left - right moving mechanism 8 for adjusting the front - rear position of the seat 4;

[0045] A leg rest front - rear moving mechanism 10 is provided on the frustum 3 for adjusting the front - rear position of the leg rest 5;

[0046] A seat board rotating mechanism 11 is provided on the chair frame 41 for adjusting the rotation angle of the seat board 42;

[0047] A backrest adjusting mechanism 12 is used for adjusting the tilt angle of the backrest 43.

[0048] In another embodiment, a fixed support 44 is provided on the backrest 43 to facilitate the fixation of the patient's upper body.

[0049] In another embodiment, the frustum lifting mechanism 6 includes a base 61, a four - linkage worm gear lift 62 and a lifting flat plate 69; the four - linkage worm gear lift 62 is fixed on the base 61, and the lifting flat plate 69 is installed on the four lifting rods of the four - linkage worm gear lift 62; a support column 64 is fixedly provided on one side of the base 61, and a first driving wheel 68 and a first driven wheel 65 are respectively rotatably provided at the upper and lower ends on one side of the support column 64, and the first driving wheel 68 and the first driven wheel 65 are power - connected by a first synchronous belt 66; a first handwheel 67 is coaxially and fixedly provided on the first driving wheel 68; the input shaft 63 of the four - linkage worm gear lift 62 is fixedly connected to the first driven wheel 65. By rotating the first handwheel 67, the first driving wheel 68 is driven to rotate, and then the first synchronous belt 66, the first driven wheel 65 and the input shaft 63 are driven to rotate synchronously, so that the four - linkage worm gear lift 62 drives the lifting flat plate 69 to move up and down.

[0050] In another embodiment, the frustum rotating mechanism 7 includes a slewing bearing 79, a gear 78, a spline shaft 73, and a bushing 71; the slewing bearing 79 is fixed on the lifting flat plate 69, the rotating ring of the slewing bearing 79 is fixed at the bottom of the frustum 3, the gear 78 is rotatably arranged on the lifting flat plate 69 and meshes with the rotating ring of the slewing bearing 79; the upper end of the spline shaft 73 is coaxially and fixedly connected to the gear 78; the spline shaft 73 is arranged inside the bushing 71; the bushing 71 is rotatably arranged on the base 61, and a second driven wheel 72 is fixedly arranged outside the bushing 71; a transmission shaft 76 is rotatably arranged on one side of the support column 64, a second handwheel 77 is arranged at the upper end of the transmission shaft 76, and a second driving wheel 75 is arranged at the lower end of the transmission shaft 76; the second driving wheel 75 is power-connected to the second driven wheel 72 through a second synchronous belt 74. By rotating the second handwheel 77, the transmission shaft 76, the second driving wheel 75, the second synchronous belt 74, the second driven wheel 72, the spline shaft 73, and the gear 78 are driven to rotate, and the gear 78 drives the slewing bearing 79 to rotate, thereby enabling the frustum 3 to perform a rotating motion. Since the spline shaft 73 and the bushing 71 can slide relative to each other, the movement of the frustum lifting mechanism 6 is not affected.

[0051] In another embodiment, the frustum 3 includes a bottom plate 33, a top plate 31, a surrounding plate 32, and a plurality of support plates 34; the bottom plate 33 and the top plate 31 are connected by a plurality of support plates 34, and the surrounding plate 32 is fixedly arranged around the edges of the bottom plate 33 and the top plate 31; a square mounting hole 35 is arranged on the top plate 31 to facilitate the movement of moving parts.

[0052] In another embodiment, the left - right moving mechanism 8 includes a first slide rail 89, a first slider 80, a first lead screw 87, a first lead screw pair 85, and a moving plate 86; the first slide rail 89 is fixedly arranged on the bottom plate 33, the first slider 80 is slidably arranged on the first slide rail 89, the first lead screw 87 is rotatably arranged on the bottom plate 33, and the first lead screw 87 is arranged parallel to the first slide rail 89; the first lead screw pair 85 is arranged in cooperation with the first lead screw 87, and the moving plate 86 is fixedly connected to the tops of the first slider 80 and the first lead screw pair 85; one end of the first lead screw 87 is provided with a third driven wheel 88; a first vertical plate 83 is arranged on the top plate 31, a third driving wheel 81 is rotatably arranged on the first vertical plate 83, and a third handwheel 82 is coaxially and fixedly arranged on the third driving wheel 81; the third driving wheel 81 is power-connected to the third driven wheel 88 through a third synchronous belt 84. By rotating the third handwheel 82, the third driving wheel 81 is driven to rotate, and then the third synchronous belt 84, the third driven wheel 88, and the first lead screw 87 are driven to rotate, thereby enabling the moving plate 86 to move left and right.

[0053] In another embodiment, the seat front-back movement mechanism 9 includes a second slide rail 98, a second slider 97, a second lead screw 96 and a second lead screw nut 95; the second slide rail 98 is fixedly arranged on the moving plate 86, the second slider 97 is slidably arranged on the second slide rail 98, the second lead screw 96 is rotatably arranged on the moving plate 86, and the second lead screw 96 is arranged in parallel with the second slide rail 98; the second lead screw nut 95 is cooperatively arranged on the second lead screw 96, and the second lead screw nut 95 is fixedly connected with the second slider 97; one end of the second lead screw 96 is provided with a fourth driven wheel 94; a second vertical plate 99 is arranged on the moving plate 86, a fourth driving wheel 92 is rotatably arranged on the second vertical plate 99, and a fourth hand wheel 91 is coaxially and fixedly arranged on the fourth driving wheel 92; the fourth driving wheel 92 is power-connected with the fourth driven wheel 94 through a fourth synchronous belt 93; the chair frame 41 is installed on the second slider 97. By rotating the fourth hand wheel 91, the fourth driving wheel 92 is driven to rotate, and then the fourth synchronous belt 93, the fourth driven wheel 94 and the second lead screw 96 are driven to rotate synchronously, so as to drive the chair frame 41 to move back and forth.

[0054] In another embodiment, side sealing plates 861 are installed on both sides of the moving plate 86, end plates 863 are installed at both ends of the moving plate 86, a top sealing plate 862 is installed at the top between the end plates 863, and a sliding groove 864 is left between the side sealing plates 861 and the top sealing plate 862; chain plates 36 are connected to the opposite sides of the two side sealing plates 861; the chain plates 36 are supported by two clamping plates 37 arranged on the bottom plate 33, and the clamping plates 37 are provided with special-shaped sliding grooves 38 for accommodating the side edges of the chain plates 36; the chain plates 36 and the top sealing plate 862 close the square mounting holes 35 on the top plate 31. When the moving plate 86 moves, the chain plates 36 can be driven to move along the special-shaped sliding grooves 38 synchronously, and the chain plates 36 provide a supporting force to prevent the patient from stepping on the air.

[0055] In another embodiment, the leg rest front-back movement mechanism 10 includes a third slider 101, a closing belt 105, a first closing belt guide block 102, a second closing belt guide block 106, a cam 1025, a camshaft 103, and a handle 104; the third slider 101 is slidably disposed on the second slide rail 98, the first closing belt guide block 102 is mounted on the third slider 101, and the leg rest 5 is mounted on the first closing belt guide block 102; the chair frame 41 is mounted on the second slider 97 through the second closing belt guide block 106; a camshaft 103 is rotatably disposed on the leg rest 5, the cam 1025 is mounted on the camshaft 103, and the handle 104 is mounted at one end of the camshaft 103 and is located on one side of the leg rest 5; both ends of the closing belt 105 are respectively mounted on end plates 863 at both ends of the moving plate 86 and cover the sliding groove 864; the lower ends of both the first closing belt guide block 102 and the second closing belt guide block 106 are slidably disposed in the sliding groove 864, and guide grooves 1021 are provided at the upper ends of both the first closing belt guide block 102 and the second closing belt guide block 106, and the closing belt 105 is threaded through the guide grooves 1021 of the first closing belt guide block 102 and the second closing belt guide block 106; four guide rollers 1024 are rotatably disposed in the guide groove 1021 of the first closing belt guide block 102, and the central connection lines of the four guide rollers 1024 are trapezoidally arranged, and the closing belt 105 is wound around the four guide rollers 1024; the cam 1025 is located in the guide groove 1021 of the first closing belt guide block 102; a vertically disposed sliding hole 1022 is provided in the guide groove 1021, a brake rod 1023 is slidably disposed in the sliding hole 1022, the bottom of the brake rod 1023 contacts the top of the second slide rail 98, and the cam 1025 can press the top of the brake rod 1023. By covering the sliding groove 864 with the closing belt 105, dust and impurities are prevented from entering the frustum, affecting the operation of the internal movement mechanism. When the leg rest 5 needs to be moved, the handle 104 is rotated, synchronously driving the camshaft 103 and the cam 1025 to rotate, so that the cam 1025 is separated from the top of the brake rod 1023, losing the limiting effect, and moving the leg rest 5 can drive the third slider 101 to move along the second slide rail 98. When the leg rest 5 moves to the in-place position, the handle 104 is rotated in the reverse direction, so that the cam 1025 presses the top of the brake rod 1023, and the bottom of the brake rod 1023 is pressed against the top of the second slide rail 98 for limiting, realizing the fixation of the leg rest 5.

[0056] In another embodiment, through holes 51 are provided at the bottom of the leg rest 5, and a cleaning mechanism is arranged in the through holes 51. The cleaning mechanism includes a support frame 53 and two rotating rollers 52 rotatably arranged in the support frame 53. An impurity adsorption belt 54 is sleeved outside the two rotating rollers 52, and the lower part of the impurity adsorption belt 54 abuts against the sealing belt 105; a sealing plate 55 is arranged at the top of the through hole 51, and a wiping sponge 56 abutting against the upper part of the impurity adsorption belt 54 is arranged at the bottom of the sealing plate 55. When the leg rest 5 moves, the sealing belt 105 drives the impurity adsorption belt 54 to rotate, so that the impurity adsorption belt 54 adheres to and removes impurities such as dust on the sealing belt 105, and then the wiping sponge 56 wipes the impurities adsorbed on the impurity adsorption belt 54 to achieve cleaning. Similarly, a cleaning mechanism can also be installed on the chair frame 41.

[0057] In another embodiment, the seat plate rotating mechanism 11 includes a driving rod 113, a support rod 112, a driving shaft 111, a fifth handwheel 114, a worm gear reducer 119, a connecting rod 115 and a right-angle connecting piece 116; the driving rod 113, the support rod 112 and the driving shaft 111 are all rotatably arranged in the chair frame 41 and are arranged in parallel with each other; the support rod 112 is located below the driving rod 113; one end of the driving shaft 111 is connected to the fifth handwheel 114, and the other end is provided with a driving bevel gear 117; the fifth handwheel 114 is located on one side of the chair frame 41; the worm gear reducer 119 is installed in the chair frame 41, and a driven bevel gear 118 meshing with the driving bevel gear 117 is arranged at the worm input end of the worm gear reducer 119; the driving rod 113 is installed in the worm wheel of the worm gear reducer 119; one end of the seat plate 42 is fixedly installed on the driving rod 113, and right-angle connecting pieces 116 are installed on both sides of the other end; the middle part of the right-angle connecting piece 116 is rotatably connected to the seat plate 42; two connecting rods 115 are hinged on the support rod 112, and the ends of the two connecting rods 115 are respectively hinged to the lower ends of the two right-angle connecting pieces 116; the backrest adjusting mechanism 12 is installed at the upper end of the right-angle connecting piece 116, and the backrest 43 is installed on the backrest adjusting mechanism 12. By rotating the fifth handwheel 114 to drive the driving shaft 111 and the driving bevel gear 117 to rotate, the worm gear reducer 119 is driven to drive the driving rod 113 to rotate, and then the seat plate 42 is rotated. Due to the action of the four-link formed by components such as the connecting rod 115 and the right-angle connecting piece 116, when the seat plate 42 rotates, the angle between the backrest 43 and the horizontal plane remains unchanged, which facilitates the direct conversion between the sitting position and the standing position of the patient without adjusting the backrest adjusting mechanism 12.

[0058] In another embodiment, the backrest adjusting mechanism 12 adopts an angle adjuster to adjust the angle between the backrest 43 and the horizontal plane.

[0059] The above are only the preferred embodiments of the present invention, not all embodiments. Anyone should know that structural changes made under the inspiration of the present invention, as long as they have the same or similar technical solutions as the present invention, all fall within the protection scope of the present invention.

Claims

1. A vertical fixing device for radiotherapy, characterized in that: include Round table, The seat is arranged on a round platform; the seat comprises a chair frame, a seat plate and a back plate; one end of the seat plate is rotatably connected to the chair frame, and the other end is rotatably connected to the back plate; A leg rest is arranged on the round table and opposite to the seat, and is used to support or clamp the legs; The truncated table rotating mechanism is arranged at the bottom of the truncated table and is used to drive the truncated table to rotate; The round table lifting mechanism is arranged at the bottom of the round table rotating mechanism and is used to drive the round table to do lifting movement; The left-right moving mechanism is arranged in the round table and is used to drive the seat and the leg rest to move left-right; The seat forward and backward movement mechanism is arranged on the left and right movement mechanism and is used to adjust the forward and backward position of the seat; The leg rest forward and backward moving mechanism is arranged on the round table and is used to adjust the forward and backward position of the leg rest; The seat plate rotation mechanism is arranged on the chair frame and is used to adjust the rotation angle of the seat plate; The back panel adjustment mechanism is used to adjust the tilt angle of the back panel.

2. The vertical fixing device for radiotherapy according to claim 1, characterized in that: The truncated table lifting mechanism includes a base, a four-linked worm lift and a lifting plate; the four-linked worm lift is fixed on the base, and the lifting plate is installed on the four lifting rods of the four-linked worm lift; a support column is fixedly provided on one side of the base, and a first driving wheel and a first driven wheel are rotatably provided at the upper and lower ends of one side of the support column, and the first driving wheel and the first driven wheel are connected to each other through a first synchronous belt power connection; a first hand wheel is coaxially fixed on the first driving wheel; the input shaft of the four-linked worm lift is fixedly connected to the first driven wheel.

3. The vertical fixing device for radiotherapy as claimed in claim 2, characterized in that: The truncated table rotating mechanism includes a slewing bearing, a gear, a spline shaft and a sleeve; the slewing bearing is fixed on the lifting plate, the rotating circle of the slewing bearing is fixed on the bottom of the truncated table, the gear is rotatably arranged on the lifting plate, and meshes with the rotating circle of the slewing bearing; the upper end of the spline shaft is coaxially fixedly connected with the gear; the spline shaft is inserted into the sleeve; the sleeve is rotatably arranged on the base, and a second driven wheel is fixedly arranged on the outside of the sleeve; a transmission shaft is rotatably arranged on one side of the support column, a second hand wheel is arranged on the upper end of the transmission shaft, and a second driving wheel is arranged on the lower end of the transmission shaft; the second driving wheel and the second driven wheel are connected by a second synchronous belt power connection.

4. The vertical fixing device for radiotherapy according to claim 1, 2 or 3, characterized in that: The truncated table includes a bottom plate, a top plate, a surrounding plate and a plurality of supporting plates; the bottom plate and the top plate are connected via a plurality of supporting plates, and the surrounding plates are fixedly arranged around the edges of the bottom plate and the top plate; a square mounting hole is arranged on the top plate.

5. The vertical fixing device for radiotherapy as claimed in claim 4, characterized in that: The left-right moving mechanism includes a first slide rail, a first slider, a first lead screw, a first wire pair and a moving plate; the first slide rail is fixedly arranged on the bottom plate, the first slider is slidably arranged on the first slide rail, the first lead screw is rotatably arranged on the bottom plate, and the first lead screw is arranged parallel to the first slide rail; the first wire pair is cooperatively arranged on the first lead screw, and the moving plate is fixedly connected to the first slider and the top of the first wire pair; a third driven wheel is arranged at one end of the first lead screw; a first vertical plate is arranged on the top plate, a third driving wheel is rotatably arranged on the first vertical plate, and a third hand wheel is coaxially fixedly arranged on the third driving wheel; the third driving wheel and the third driven wheel are connected by a third synchronous belt power connection.

6. The vertical fixing device for radiotherapy according to claim 5, characterized in that: The seat forward and backward moving mechanism includes a second slide rail, a second slider, a second lead screw and a second lead screw pair; the second slide rail is fixedly arranged on a movable plate, the second slider is slidably arranged on the second slide rail, the second lead screw is rotatably arranged on the movable plate, and the second lead screw is arranged parallel to the second slide rail; the second lead screw is cooperatively arranged on the second lead screw, and the second lead screw is fixedly connected to the second slider; a fourth driven wheel is arranged at one end of the second lead screw; a second vertical plate is arranged on the movable plate, a fourth driving wheel is rotatably arranged on the second vertical plate, and a fourth hand wheel is coaxially fixed on the fourth driving wheel; the fourth driving wheel and the fourth driven wheel are connected by a fourth synchronous belt power connection; the chair frame is installed on the second slider.

7. The vertical fixing device for radiotherapy according to claim 6, characterized in that: Side sealing plates are installed on both sides of the movable plate, end plates are installed on both ends of the movable plate, a top sealing plate is installed on the top between the end plates, and a sliding groove is left between the side sealing plate and the top sealing plate; the opposite sides of the two side sealing plates are connected to chain plates; the chain plate is supported by two clamping plates arranged on the bottom plate, and the clamping plates are provided with special-shaped sliding grooves for accommodating the sides of the chain plates; the chain plates and the top sealing plates close the square mounting holes on the top plate.

8. The vertical fixing device for radiotherapy according to claim 7, characterized in that: The leg rest forward and backward moving mechanism includes a third slider, a closed belt, a first closed belt guide block, a second closed belt guide block, a cam, a camshaft and a handle; the third slider is slidably arranged on the second slide rail, the first closed belt guide block is installed on the third slider, and the leg rest is installed on the first closed belt guide block; the chair frame is installed on the second slider through the second closed belt guide block; a camshaft is rotatably arranged on the leg rest, the cam is installed on the camshaft, and the handle is installed at one end of the camshaft and is located on one side of the leg rest; the two ends of the closed belt are respectively installed on the end plates at both ends of the moving plate and cover the sliding groove; the first closed belt guide block and the second closed belt guide The lower ends of the blocks are slidably arranged in the sliding grooves, the upper ends of the first closed band guide block and the second closed band guide block are provided with guide grooves, the closed band is inserted into the guide grooves of the first closed band guide block and the second closed band guide block; four guide rollers are rotatably arranged in the guide grooves of the first closed band guide block, the center lines of the four guide rollers are arranged in a trapezoidal shape, and the closed band is wound around the four guide rollers; the cam is located in the guide groove of the first closed band guide block; a vertically arranged sliding hole is arranged in the guide groove, a brake rod is slidably arranged in the sliding hole, the bottom of the brake rod is in contact with the top of the second slide rail, and the cam can squeeze the top of the brake rod.

9. The vertical fixing device for radiotherapy as claimed in claim 8, characterized in that: The seat plate rotation mechanism includes a driving rod, a support rod, a driving shaft, a fifth hand wheel, a worm gear reducer, a connecting rod and a right-angle connector; the driving rod, the support rod and the driving shaft are all rotatably arranged in the chair frame and are arranged parallel to each other; the support rod is located below the driving rod; one end of the driving shaft is connected to the fifth hand wheel, and the other end is equipped with an active bevel gear; the fifth hand wheel is located on one side of the chair frame; the worm gear reducer is installed in the chair frame, and the worm input end of the worm gear reducer is provided with a driven bevel gear meshing with the active bevel gear; the driving rod is installed in the worm wheel of the worm gear reducer; one end of the seat plate is fixedly installed on the driving rod, and right-angle connectors are installed on both sides of the other end; the middle part of the right-angle connector is rotatably connected to the seat plate; two connecting rods are hinged on the support rod, and the ends of the two connecting rods are respectively hinged to the lower ends of the two right-angle connectors; the back plate adjustment mechanism is installed at the upper end of the right-angle connector, and the back plate is installed on the back plate adjustment mechanism.

10. The vertical fixing device for radiotherapy according to claim 9, characterized in that: The back plate adjustment mechanism adopts an angle adjuster.

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