CN111481838A - Tumor radiotherapy bed with positioning function - Google Patents
Tumor radiotherapy bed with positioning function Download PDFInfo
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- CN111481838A CN111481838A CN202010213499.XA CN202010213499A CN111481838A CN 111481838 A CN111481838 A CN 111481838A CN 202010213499 A CN202010213499 A CN 202010213499A CN 111481838 A CN111481838 A CN 111481838A
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- bed board
- main bed
- lifting
- positioning function
- positioning
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1092—Details
- A61N2005/1097—Means for immobilizing the patient
Abstract
The invention provides a tumor radiotherapy bed with a positioning function, and relates to a tumor radiotherapy bed with a positioning function, which comprises a main bed plate, wherein a plurality of positioning mechanisms moving from the outer side to the middle of the main bed plate are arranged on the main bed plate; one side of the main bed board is provided with a lifting device which can send the patient to the main bed board from the upper part of the main bed board. The problems that in the prior art, a large amount of time is needed for positioning and the positioning is inaccurate in each radiotherapy are solved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a tumor radiotherapy bed with a positioning function.
Background
Cancer treatment methods mainly include surgery, radiotherapy and the like, and among many treatment methods, radiotherapy plays a crucial role. The 2014 world cancer report data shows that about 50% -65% of tumor patients need to receive radiotherapy according to the stage and type of tumors. Related reports in China show that: inaccurate positioning during radiotherapy can lead to the greatly increased recurrence rate of radiotherapy patients. The center of the tumor is not visible in the body, and its location is typically determined by marking a cross-hair on the patient's body and thermoplastic film (or vacuum pad). The problem of tumor centering is more: the gap between the human body and the thermoplastic film (or the vacuum pad) causes the relative position of the two to change, which causes the center of the tumor to shift. In China, because the number of patients who need to receive radiotherapy is large, the positioning time of each patient is short, the workload of technical personnel is large, the working time is long, and the positioning precision is difficult to ensure. Most of the time, the thermoplastic film (or vacuum pad) can only cover part of the body surface of the patient, which brings uncertainty of the positioning. And each radiotherapy patient needs a separate thermoplastic film (or vacuum pad), increasing the treatment cost of the patient.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a tumor radiotherapy bed with a positioning function, and solves the problems that in the prior art, each radiotherapy needs to spend a large amount of time for positioning and the positioning is inaccurate.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the tumor radiotherapy bed with the positioning function comprises a main bed board, wherein a plurality of positioning mechanisms moving from the outer side to the middle of the main bed board are arranged on the main bed board, a distance meter is movably arranged on one side, away from the main bed board, of each positioning mechanism, and a photoelectric switch is arranged on one side, facing the distance meter, of each positioning mechanism; one side of the main bed board is provided with a lifting device which can send the patient to the main bed board from the upper part of the main bed board.
Furthermore, the positioning mechanism comprises a marking column parallel to the main bed plate, the marking column is connected to a moving seat through a connecting rod, the moving seat is connected to the screw rod mechanism, and a guide hole for the connecting rod to penetrate through is formed in the main bed plate. Lead screw among the screw mechanism rotates and to make the screw nut with lead screw threaded connection along lead screw axial displacement, moves the seat and is fixed in on the screw nut, moves the removal of seat and drives the mark post and remove, and the front end of mark post contacts with patient's skin, encloses into patient's size through a plurality of mark posts to use skin ink to draw at the skin department of every mark post contact and mark.
Further, the connecting rod includes the last connecting rod with mark post fixed connection and with remove seat fixed connection's lower connecting rod, go up the connecting rod and pass through 90 hinged joint with lower connecting rod, 90 hinges are located the top surface department of main bed board. When need not using positioning mechanism, can fold the connecting rod and avoid positioning mechanism to occupy the space of too many main bed boards top, for example when gathering patient size data for the first time, after folding the connecting rod, the patient can directly lie on main bed board, has improved flexibility and the convenience of using.
Furthermore, a cross-shaped boss is fixed on the end face of the marking column facing the inner side of the main bed plate. The cross-shaped boss is convenient for drawing a marking line on the body of a patient, and the point determined at the cross-shaped intersection is unique, so that the marking accuracy is improved.
Furthermore, the lifting device comprises an auxiliary bed board and a lifting machine for lifting the auxiliary bed board, and the lifting machine is fixed on the electric guide rail. After the first body type data acquisition of a patient, in the later radiotherapy, the body type data recorded by the system controls the positioning mechanism to move to a target position to form a body type cavity of the patient, the patient lies on the auxiliary bed plate, the auxiliary bed plate is lifted to the position above the positioning mechanism through the lifting machine, and then the lifting machine is translated to the position right above the body type cavity through the electric guide rail.
Furthermore, the lifting machine comprises a first lifting machine and a second lifting machine which are symmetrically arranged at the head end and the tail end of the main bed board, the first lifting machine and the second lifting machine are respectively used for lifting a head end lifting plate and a tail end lifting plate, the head end lifting plate and the tail end lifting plate are spliced into an auxiliary bed board, ultraviolet disinfection lamps are respectively arranged on the bottom surfaces of the head end lifting plate and the tail end lifting plate, and the first lifting machine and the second lifting machine are fixed on L type electric guide rails, L type electric guide rails enable the auxiliary bed board to move horizontally to convey a patient to the main bed board and then split and move towards two ends of the patient, so that the interference of radiotherapy of the patient on the main bed board is avoided.
Furthermore, a plurality of embedded plates are arranged in the middle of the main bed board side by side, a telescopic mechanism is arranged below each embedded plate, and stable descending holes for the embedded plates to pass through are correspondingly formed in the head end lifting plate and the tail end lifting plate. Before the head end lifting plate and the tail end lifting plate are contacted with the positioning mechanism, the panel can be pushed to vertically move upwards through the telescopic mechanism and be embedded into the stable descending hole, so that the panel supports a patient, then the head end lifting plate moves towards the head end, and the tail end lifting plate moves towards the tail end.
Furthermore, the L type electric rail comprises a L type rail, a sliding block is slidably connected to the L type rail, the sliding block is fixed at one end of a chain, the other end of the chain is wound on a chain wheel driven by a motor, the motor drives the chain wheel to rotate so as to wind the chain onto the chain wheel, the chain pulls the sliding block to move along the L type rail, and the moving speed, the moving direction and the moving displacement of the sliding block can be controlled by controlling the rotating speed, the steering direction and the rotating time of the motor.
The photoelectric switch detects whether the slide block reaches the bending position, so that the action of stopping at the bending position for a period of time is realized, enough time is reserved for stably and orderly placing a patient on the main bed board, and the operation safety is improved in the process of realizing automation.
Furthermore, the lifting device is arranged on the bottom plate, and the bottom surface of the bottom plate is provided with a universal wheel with a brake. The lifting device is supported through the bottom plate, the universal wheel with the brake can enable the whole lifting device to move more conveniently, and can stably stop through the brake on any flat ground, so that the lifting device can be conveniently moved beside the main bed plate when needing to be lifted, and can be moved away when not needing to provide more moving spaces around the main bed plate.
The invention has the beneficial effects that: the radiotherapy bed in this scheme of use, the main bed board is used for supplying the patient to lie for sleeping in, after the position technician puts the position of patient well, the distancer that removes is used for reaching every positioning mechanism department and measures the distance between the patient's body surface, the arrival signal of distancer feeds back through the photoelectric switch on every positioning mechanism, positioning mechanism removes the back and keeps according to the distance value that the distancer measured, treat that all positioning mechanism reach the target position after, this target position is the position of mark post front end and patient's skin contact among the positioning mechanism, record the distance that all positioning mechanism removed, reuse skin ink and make the mark in mark post and patient's skin contact position.
In the second and all subsequent radiotherapy of the patient, all positioning mechanisms are moved to the target position by calling out the positioning mechanism movement distance data stored before the patient, and the patient is vertically placed into a body cavity defined by the positioning mechanisms from the top end of the main bed plate through the lifting device, so that the positioning efficiency is increased; the positioning technician finely adjusts the body position of the patient in the body cavity, so that the marks of the skin ink pictures on the surface of the skin are aligned with the cross bosses on the marking columns one by one, and the positioning accuracy is ensured; positioning mechanism plays spacing effect simultaneously, owing to the butt that has had the mark post can avoid the patient to remove the accuracy that influences the position at will.
Drawings
Fig. 1 is a schematic top view of a tumor radiotherapy bed with a positioning function.
Fig. 2 is a right-view structural schematic diagram of a tumor radiotherapy bed with a positioning function.
Fig. 3 is a schematic structural view of the positioning mechanism 2.
The multifunctional lifting device comprises a main bed board 1, a main bed board 11, a guide hole 12, a panel 13, a telescopic mechanism 2, a positioning mechanism 21, a marking column 211, a cross boss 22, a connecting rod 221, an upper connecting rod 222, a lower connecting rod 223, a 90-degree hinge 23, a movable seat 24, a screw mechanism 3, a range finder 4, a lifting device 41, a first lifting machine 42, a second lifting machine 43, a head end lifting plate 431, a stable descending hole 44, a tail end lifting plate 45, L type electric guide rails, 451, L type slide rails, 452, a sliding block 453, a chain 454, a chain wheel 455, a steering chain wheel 46, an ultraviolet disinfection lamp 5, a bottom plate 6 and universal wheels.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1 and fig. 2, the tumor radiotherapy bed with positioning function comprises a main bed plate 1, wherein the main bed plate 1 is a rectangular plate with a length of 2 meters and a width of 1.2 meters. Be provided with on the main bed board 1 from main bed board outside to a plurality of positioning mechanism 2 of middle removal, one side that positioning mechanism 2 kept away from main bed board removes and is provided with distancer 3, and one side that every positioning mechanism 2 faced distancer 3 is provided with photoelectric switch.
The distribution of positioning mechanism 2 on main bed board 1 is as shown in fig. 1, and the main distribution law sets up two positioning mechanism respectively side by side at patient's top of the head end and sole end and restricts the displacement on the patient direction of height, and the displacement of patient left and right direction is through the restriction of the symmetrical positioning mechanism 2 that sets up on main bed board 1 left side and right side, and in patient's direction of height, mainly through can realize that the position removes the joint that the downside sets up a positioning mechanism 2 respectively about the patient, makes the both sides of joint be fixed a position.
As shown in fig. 3, the positioning mechanism 2 includes a marking post 21 parallel to the main bed board 1, the marking post 21 is connected to a moving seat 23 through a connecting rod 22, the moving seat 23 is connected to a screw mechanism 24, and the main bed board 1 is provided with a guide hole 11 for the connecting rod 22 to pass through. The screw mechanism 24 is arranged below the main bed board 1, a screw nut in the screw mechanism 24 is fixedly connected with the moving seat 23, a screw in the screw mechanism 24 is driven to rotate by a motor, and the number of rotating turns of the motor is collected to serve as a moving distance value of the screw nut, namely a moving distance value of the marking column 21.
The connecting rod 22 comprises an upper connecting rod 221 fixedly connected with the marking post 21 and a lower connecting rod 222 fixedly connected with the moving seat 23, the upper connecting rod 221 and the lower connecting rod 222 are connected through a 90-degree hinge 223, and the 90-degree hinge 223 is located at the top surface of the main bed board 1. The 90 ° hinge allows the upper connecting bar 221 and the lower connecting bar 222 to be either in a parallel or perpendicular state and to be fixed in both states. The marking post 21 is vertically fixed to the tip end of the upper link rod 221, and a cross boss 211 is fixed to the end surface facing the inside of the main bed plate 1, the end surface of the cross boss 211 is in contact with the skin surface of the patient, and the positioning technician can draw a mark along the cross boss 211 with skin ink.
All install distancer 3 in the each limit outside of main bed board 1, on main bed board 1 promptly, need 4 distancers 3, every distancer 3 is responsible for the distance measurement of all positioning mechanism 2 distance patient skin surface on the corresponding side. The distance measuring instrument 3 is only used after the patient is put in position for the first time, and is not needed to be used in the subsequent radiotherapy of the same patient. The distance measuring instrument 3 is driven to move along each side length of the main bed board 1 by adopting a lead screw mechanism, the distance measuring instrument 3 is fixed on a lead screw nut of the lead screw mechanism, a motor drives a lead screw to rotate to drive the distance measuring instrument to move, the infrared distance measuring instrument is preferably selected by the distance measuring instrument 3, and the visibility of infrared light can help a positioning technician to judge whether a distance measuring point corresponds to the positioning mechanism 2.
The photoelectric switch is installed at one end, far away from the cross boss, of the marking column 21, light is blocked to trigger the photoelectric switch through the photoelectric switch on the corresponding positioning mechanism 2, and then the distance value between the marking column 21 and the surface of a human body, measured by the distance meter 3 in the moment of triggering the photoelectric switch, is collected, and then the positioning mechanism 2 is controlled to stop after moving according to the distance value, because the initial position of each positioning mechanism 2 is the same, the length of the marking column 21 in each positioning mechanism 2 is consistent, the rotating number of turns of the screw mechanism 24 in one positioning mechanism 2 can be obtained after the distance measured by the distance meter 3 is converted, and the surface of the cross boss on the marking column 21 is just attached to the skin surface of a patient after the positioning mechanism 2 moves and is not extruded. The distance that the positioning mechanism 2 needs to move at each position measured by the distance measuring instrument 3 is filed as the file of the patient, so that the patient can be conveniently taken and used when going to a hospital for radiotherapy.
When a patient goes to a hospital for radiotherapy for the second time, the third time and all subsequent times, the moving distance data of the positioning mechanism 2 obtained in the first radiotherapy of the patient is retrieved, then all the positioning mechanisms 2 are controlled to move to the target positions to form the body cavities, and then the lifting device 4 is used for moving the patient.
The lifting device 4 is arranged on one side of the main bed board 1, the lifting device 4 comprises an auxiliary bed board and a lifting machine for lifting the auxiliary bed board, the lifting machine is fixed on an electric guide rail, the lifting machine comprises a first lifting machine 41 and a second lifting machine 42 which are symmetrically arranged at the head end and the tail end of the main bed board, the first lifting machine 41 and the second lifting machine 42 are respectively used for lifting a head end lifting plate 43 and a tail end lifting plate 44, the head end lifting plate 43 and the tail end lifting plate 44 are spliced into the auxiliary bed board, ultraviolet disinfection lamps 46 are respectively arranged on the bottom surfaces of the head end lifting plate 43 and the tail end lifting plate 44 so as to carry out ultraviolet disinfection on the surface of the main bed board 1, and the first lifting machine 41 and the second lifting machine 42 are both fixed on an L type electric guide rail 45.
The first lifting machine 41 and the second lifting machine 42 are hydraulic cylinder type lifting machines, the auxiliary bed plate is lifted or lowered through the lifting of a hydraulic cylinder piston rod, a fork type support is connected to the hydraulic cylinder piston rod to support the head end lifting plate 43 or the tail end lifting plate 44, the head end lifting plate 43 or the tail end lifting plate 44 can be spliced to enable the head end lifting plate 43 or the tail end lifting plate 44 to be withdrawn from the plane to the two ends after a patient is transferred, and the L type electric guide rails 45 are used for controlling the moving tracks of the first lifting machine 41 and the second lifting machine 42.
The L-type electric rail 45 includes a L-type slide rail 451, a L-type slide rail 451 slidably connected with a slider 452, the slider 452 fixed to one end of a chain 453, the other end of the chain 453 wound around a sprocket 454 driven by a motor, and a steering sprocket 455 for changing the direction of the chain 453 disposed between the sprocket 454 and the slider 452.
The L type slide rail 451 is provided with stoppers at both ends, and the L type slide rail 451 is provided with a photoelectric switch at the beginning of bending, the stopper is used for preventing the slide block 452 from sliding out of the L type slide rail 451, and the photoelectric switch at the beginning of bending is used for triggering the motor for driving the chain wheel 454 to rotate to stop so as to transfer the patient from the sub bed board to the main bed board 1.
A plurality of panels 12 are arranged in parallel in the middle of the main bedplate 1, a telescopic mechanism 13 is arranged below each panel 11, and stabilizing holes 431 for the panels 12 to pass through are correspondingly arranged on the head end lifting plate 43 and the tail end lifting plate 44. The telescoping mechanism 13 is a hydraulic cylinder. The telescopic mechanism 13 is installed in a box body fixed on the bottom surface of the main bed board 1. The panels 12 cannot be set too much or too large, avoiding a reduction in the strength of the main bedplate 1. The number and size of the panels 12 need only be sufficient to support exactly the entire patient, since the patient is on the panels 12 for a short time, only from the top of the positioning mechanism 2 to the surface of the main bed board 1.
When the sub-bed board delivers the patient to the right above the body cavity (this position is ensured by L type electric guide rail 45), the telescopic mechanism 13 drives the panel 12 to move up to the steady lowering hole 431 to support the patient, then the chain wheel 454 continues to rotate to pull the slide block 452 to move, thereby drawing out the head end lifting plate 43 and the tail end lifting plate 44, finally the panel 12 is descended to the body cavity on the main bed board 1 supporting the patient, and the positioning technician marks an alignment with the corresponding cross-shaped boss 211 according to the skin ink left on the skin of the patient.
In order to improve the convenience of the lifting device 4 in moving, the lifting device 4 is integrated on a bottom plate 5, and a universal wheel 6 with a brake is arranged on the bottom surface of the bottom plate 5.
Claims (10)
1. The tumor radiotherapy bed with the positioning function is characterized by comprising a main bed board (1), wherein a plurality of positioning mechanisms (2) moving from the outer side to the middle of the main bed board are arranged on the main bed board (1), a distance meter (3) is movably arranged on one side, away from the main bed board, of each positioning mechanism (2), and a photoelectric switch is arranged on one side, facing the distance meter (3), of each positioning mechanism (2); one side of the main bed board (1) is provided with a lifting device (4) which can send a patient to the main bed board (1) from the upper part of the main bed board.
2. The tumor radiotherapy bed with positioning function according to claim 1, wherein the positioning mechanism (2) comprises a marking column (21) parallel to the main bed board (1), the marking column (21) is connected to a moving seat (23) through a connecting rod (22), the moving seat (23) is connected to a screw mechanism (24), and a guide hole (11) for the connecting rod (22) to pass through is arranged on the main bed board (1).
3. The tumor radiotherapy bed with positioning function according to claim 2, characterized in that the connecting rod (22) comprises an upper connecting rod (221) fixedly connected with the marking column (21) and a lower connecting rod (222) fixedly connected with the moving seat (23), the upper connecting rod (221) and the lower connecting rod (222) are connected through a 90 ° hinge (223), and the 90 ° hinge (223) is located at the top surface of the main bedplate (1).
4. The tumor radiotherapy bed with positioning function according to claim 2, wherein a cross-shaped boss (211) is fixed on the end surface of the marking column (21) facing to the inner side of the main bed board (1).
5. The tumor radiotherapy bed with positioning function according to claim 1, wherein the lifting device (4) comprises an auxiliary bed board and a lifter for lifting the auxiliary bed board, and the lifter is fixed on the electric guide rail.
6. The tumor radiotherapy bed with positioning function according to claim 5, wherein the lifting machine comprises a first lifting machine (41) and a second lifting machine (42) symmetrically arranged at the head end and the tail end of the main bed board, the first lifting machine (41) and the second lifting machine (42) are respectively used for lifting a head end lifting plate (43) and a tail end lifting plate (44), the head end lifting plate (43) and the tail end lifting plate (44) are spliced into the sub-bed board, the head end lifting plate (43) and the tail end lifting plate (44) are respectively provided with an ultraviolet disinfection lamp (46) on the bottom surfaces thereof, and the first lifting machine (41) and the second lifting machine (42) are both fixed on L type electric guide rails (45).
7. The tumor radiotherapy bed with positioning function according to claim 6, wherein a plurality of panels (12) are arranged side by side in the middle of the main bed board (1), a telescopic mechanism (13) is arranged below each panel (11), and steady lowering holes (431) for the panels (12) to pass through are correspondingly arranged on the head end lifting plate (43) and the tail end lifting plate (44).
8. The tumor radiotherapy bed with positioning function of claim 6, wherein the L-type electric guide rail (45) comprises a L-type slide rail (451), the L-type slide rail (451) is slidably connected with a slide block (452), the slide block (452) is fixed at one end of a chain (453), and the other end of the chain (453) is wound on a sprocket wheel (454) driven by a motor.
9. The tumor radiotherapy bed with positioning function of claim 8, wherein both ends of the L-shaped slide rail (451) are provided with stoppers, and the bending start position of the L-shaped slide rail (451) is provided with a photoelectric switch.
10. The tumor radiotherapy bed with positioning function according to claim 1, wherein the lifting device (4) is disposed on a bottom plate (5), and a universal wheel (6) with a brake is mounted on the bottom surface of the bottom plate (5).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113663181A (en) * | 2021-08-26 | 2021-11-19 | 青岛市市立医院(青岛市临床医学研究所、青岛市医学影像中心) | Positioner is used in clinical tumour chemotherapy |
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| CN111481838B (en) | 2022-03-01 |
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