阅读说明：本技术 一种定位遮挡的临床放疗装置 (Clinical radiotherapy device that location was sheltered from ) 是由 冷宁 于 2019-10-10 设计创作，主要内容包括：本发明涉及医疗器械技术领域,尤其是一种定位遮挡的临床放疗装置,包括承重板、床板、固定遮板和遥控系统,所述床板位于承重板上方,承重板转筒内插接有支撑柱,支撑柱上方前侧设有第一移动架,第一移动架左右两端设有电动伸缩杆,两电动伸缩杆下部之间设有第二移动架,第二移动架下端固接放疗照射装置,下方设有固定遮板,所述固定遮板中间设有上下贯通的正方形通孔,上层空腔内左右两侧设有第一滑动遮板,下层空腔内前后两侧设有第二滑动遮板。本发明结构设计合理,通过调节第一移动架和第二移动架的位置,即可实现定位照射,通过调节通孔实际可通过面积的大小,以用于根据病人肿瘤的大小程度调节照射面积。(The invention relates to the technical field of medical instruments, in particular to a positioning and shielding clinical radiotherapy device which comprises a bearing plate, a bed plate, a fixed shielding plate and a remote control system, wherein the bed plate is positioned above the bearing plate, a supporting column is inserted in a rotary drum of the bearing plate, a first moving frame is arranged on the front side above the supporting column, electric telescopic rods are arranged at the left end and the right end of the first moving frame, a second moving frame is arranged between the lower parts of the two electric telescopic rods, the lower end of the second moving frame is fixedly connected with a radiotherapy irradiation device, the fixed shielding plate is arranged below the second moving frame, a vertically through square through hole is arranged in the middle of the fixed shielding plate, first sliding shielding plates are arranged at the left side and the right. The invention has reasonable structural design, can realize positioning irradiation by adjusting the positions of the first movable frame and the second movable frame, and can adjust the irradiation area according to the size degree of the tumor of the patient by adjusting the actual accessible area of the through hole.)

1. The utility model provides a clinical radiotherapy device that location was sheltered from, includes bearing plate, bed board, fixed sunshade and remote control system, its characterized in that: the support plate is characterized in that support legs are fixedly connected to four corners of the lower end face of the support plate, two front-back sliding grooves are formed in the upper end face of the support plate, slide bars are fixedly connected to the lower end face of the bed plate and are inserted into the sliding grooves, fixing screws are connected to the four corners of the lower end face of the support plate in a threaded manner, fixing slots are formed in the four corners of the lower end face of the bed plate, upper ends of the fixing screws are inserted into the fixing slots, a rotary drum is fixedly connected to the rear end of the support plate, a support column is inserted into the rotary drum, a first motor is fixedly connected to the rear portion above the support column, a first signal receiving controller is fixedly connected to the upper end of the first motor and is electrically connected with the support column, a first threaded rod inserted into the support column is fixedly connected to the front side of the top end of the support column, the first limiting rod, the first limiting rod is inserted in the first moving frame, the left end and the right end of the first moving frame are fixedly connected with first connecting rods, the two first connecting rods are fixedly connected with electric telescopic rods towards the outer ends, the top end of each electric telescopic rod is fixedly connected with a second signal receiving controller, the two electric telescopic rods are electrically connected, a second limiting rod is fixedly connected between the lower parts of the two electric telescopic rods, the right end of the lower part of the right electric telescopic rod is fixedly connected with a second motor, the upper end of the second motor is fixedly connected with a third signal receiving controller, the two electric telescopic rods are electrically connected, the left end of an output shaft of the second motor is fixedly connected with a second threaded rod inserted in the right electric telescopic rod, the left end of the second threaded rod is connected with the left electric telescopic rod through a first bearing, the second threaded rod is positioned below the second limiting rod, the second threaded rod is in threaded connection with the second moving frame, the second limiting rod, a sixth signal receiving controller is fixedly connected to the front end face of the second moving frame, the radiotherapy irradiation device is electrically connected with the sixth signal receiving controller, L-shaped second connecting rods are fixedly connected to the lower portions of the left side face and the right side face of the second moving frame, the left side and the right side of a fixed shielding plate are fixedly connected to the lower ends of the two second connecting rods, the horizontal position of the upper end face of each second connecting rod is lower than the horizontal positions of the bottom faces of the left electric telescopic rod and the right electric telescopic rods, an upper cavity and a lower cavity are arranged in the fixed shielding plate, a vertically through square through hole is arranged in the middle of the fixed shielding plate, a third threaded rod is connected between the front portions of the inner walls of the left side and the right side of the upper cavity through a second bearing, a first stressed gear is fixedly connected to the middle of the third threaded rod, the thread directions of the third threaded rod are opposite to the left side and the right side of the, the rear end of the first connecting block is fixedly connected with a first sliding curtain board, the left side of the front end face of the fixed curtain board in the upper cavity is fixedly connected with a third motor, the output shaft of the third motor is fixedly connected with a first power gear meshed with the first stressed gear, the upper part of the front end face of the fixed curtain board is fixedly connected with a fourth signal receiving controller, a fourth signal receiver is electrically connected with the third motor, a fourth threaded rod is connected between the right sides of the front inner wall and the rear inner wall of the lower cavity through a third bearing, the middle part of the fourth threaded rod is fixedly connected with a second stressed gear, the thread directions of the front side and the rear side of the fourth threaded rod on the second stressed gear are opposite, the front side and the rear side of the fourth threaded rod are respectively in threaded connection with a second threaded sleeve, the rear ends of the two second threaded sleeves are respectively fixedly connected with a second connecting block, the rear end of the second connecting block is fixedly connected with a second sliding curtain, a second power gear meshed with the second stressed gear is fixedly connected to an output shaft of a fourth motor, a fifth signal receiving controller is fixedly connected to the lower portion of the right end face of the fixed shielding plate, the fifth signal receiver is electrically connected with the fourth motor, the lengths of the long sides of the first sliding shielding plate and the second sliding shielding plate are equal to the length of the side of the through hole, the length of the short side of the first sliding shielding plate and the second sliding shielding plate is half of the length of the through hole, the first sliding shielding plate, the second sliding shielding plate and the fixed shielding plate are made of lead, the remote control system comprises a first signal transmitter, a second signal transmitter, a third signal transmitter, a fourth signal transmitter, a fifth signal transmitter and a sixth signal transmitter, and the first signal receiving controller, the second signal receiving controller, the third signal receiving controller, the fourth signal receiving controller, the fifth signal receiving controller and the sixth signal receiving controller are respectively matched, the left end of the bearing plate is fixedly connected with an external power plug, and the external power plug is electrically connected with the first motor, the electric telescopic rod, the second motor, the third motor, the fourth motor and the radiotherapy irradiation device respectively.

2. A device for positioning shielding in clinical radiotherapy according to claim 1, wherein: the lower end of the supporting leg is fixedly connected with a universal wheel with a self-locking device.

3. A device for positioning shielding in clinical radiotherapy according to claim 1, wherein: the upper end surface of the bed board is connected with a sterilized cotton pad in a contact way.

4. A device for positioning shielding in clinical radiotherapy according to claim 1, wherein: the bottom surface in the sliding groove is provided with a plurality of ball grooves, and balls are clamped in the ball grooves.

5. A device for positioning shielding in clinical radiotherapy according to claim 1, wherein: the rear end of the rotary drum is in screwed connection with a fastening knob.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a clinical radiotherapy device for positioning shielding.

Background

At present, radiotherapy is a common means of tumor therapy, and tumor radiotherapy is a local treatment method for treating tumors by using radioactive rays, including alpha, beta and gamma rays generated by radioactive isotopes, and x rays, electron beams, proton beams and other particle beams generated by various x-ray treatment machines or accelerators, and about 70% of cancer patients need radiotherapy in the process of treating cancers, and about 40% of cancers can be cured radically by radiotherapy. Since the radiation of the radiotherapy is harmful to the cells of the human body, when the patient receives the radiotherapy, the healthy part of the patient is also irradiated by the radiation, so that the healthy part of the patient is also unnecessarily damaged. In order to solve the problem, in the chinese invention patent with the publication number CN110152212A, a radiation therapy protection device for the intracavitary treatment of gynecological tumor is disclosed, wherein a plurality of first protective covers and second protective covers are arranged in the radiation therapy apparatus for tumor, the patient is pushed into the first protective cover and the second protective cover through a lying plate for radiation therapy, and the first protective cover and the second protective cover are adjusted by arranging a connecting block, so that the first protective cover and the second protective cover can protect the healthy part of the patient from being affected by rays during radiation therapy. However, the device is covered by the first protective cover and the second protective cover, so that the patient cannot directly lie on the bed, and the device is not convenient for adjusting the irradiation area and is not suitable for different patients.

Disclosure of Invention

The present invention is directed to overcome the above technical disadvantages and to provide a positioning and shielding clinical radiotherapy apparatus, which can achieve positioning radiation by adjusting the positions of a first movable frame and a second movable frame, and can adjust the size of the actual accessible area of a through hole by controlling the opening or closing of two first sliding shutters and two second sliding shutters, so as to adjust the radiation area according to the size of the tumor of a patient.

The technical scheme adopted by the invention for solving the technical problems is as follows: a clinical radiotherapy device with a positioning shelter comprises a bearing plate, a bed plate, a fixing shield plate and a remote control system, wherein four corners of the lower end surface of the bearing plate are fixedly connected with supporting legs, the upper end surface of the bearing plate is provided with two forward and backward sliding grooves, the lower end surface of the bed plate is fixedly connected with a sliding rod, the sliding rod is inserted in the sliding groove, a patient with a light disease can directly lie on the bed plate, the patient with a serious disease can be lifted on the bed plate in advance and then put on the bearing plate along the sliding grooves, four corners of the lower end surface of the bearing plate are all in threaded connection with fixing screws, four corners of the lower end surface of the bed plate are all provided with fixing slots, the upper ends of the fixing screws are inserted in the fixing slots so as to fix the bed plate and prevent the bed plate from sliding randomly, the rear end of the bearing plate is fixedly connected with a rotary drum, a supporting column is inserted in the rotary drum, a first motor, the first motor and the second motor are electrically connected, a first threaded rod which is inserted into a support column is fixedly connected to the front end of an output shaft of the first motor, a first limiting rod which faces forwards is fixedly connected to the front side of the top end of the support column, the first limiting rod is positioned above the first threaded rod, a first moving frame is connected to the first threaded rod through external threads, the first limiting rod is inserted into the first moving frame, when the first motor is started, the first threaded rod is driven to rotate, the first moving frame cannot rotate under the action of the first limiting rod, so that the first moving frame can move forwards and backwards, first connecting rods are fixedly connected to the left end and the right end of the first moving frame, electric telescopic rods are fixedly connected to the outward ends of the two first connecting rods, a second signal receiving controller is fixedly connected to the top end of the electric telescopic rods, a second limiting rod is fixedly connected between the lower parts of the two electric telescopic rods, and a second motor, the upper end of the second motor is fixedly connected with a third signal receiving controller which is electrically connected with the third signal receiving controller, the left end of an output shaft of the second motor is fixedly connected with a second threaded rod which is spliced with the right electric telescopic rod, the left end of the second threaded rod is connected with the left electric telescopic rod through a first bearing, the second threaded rod is positioned below a second limiting rod, the second threaded rod is in external threaded connection with a second moving frame, the second limiting rod is spliced with a second moving frame, when the second motor is started, the second threaded rod is driven to rotate, the second moving frame cannot rotate under the action of the second limiting rod, so the second moving frame will move left and right, the lower end of the second moving frame is fixedly connected with a radiotherapy irradiation device, the front end face of the second moving frame is fixedly connected with a sixth signal receiving controller, the radiotherapy irradiation device is electrically connected with the sixth signal receiving controller, and the lower parts of the left side face and the right side face of the second moving frame are, the lower ends of the two second connecting rods are fixedly connected with the left side and the right side of a fixed shading plate, the horizontal position of the upper end surface of each second connecting rod is lower than the horizontal position of the bottom surfaces of the left electric telescopic rod and the right electric telescopic rod so as to ensure that the second connecting rods cannot collide with the lower parts of the electric telescopic rods when the second moving frame moves left and right, an upper cavity and a lower cavity are arranged in each fixed shading plate, a square through hole which is vertically communicated is arranged in the middle of each fixed shading plate, a third threaded rod is connected between the front parts of the inner walls of the left side and the right side of the upper cavity through a second bearing, a first stress gear is fixedly connected in the middle of each third threaded rod, the thread directions of the left side and the right side of each third threaded rod are opposite to those of the left side and the right side of the first stress gear, first threaded sleeves are in threaded connection with the left side and the right side of each third, a first power gear meshed with the first stressed gear is fixedly connected to an output shaft of the third motor, a fourth signal receiving controller is fixedly connected to the upper portion of the front end face of the fixed shielding plate, the fourth signal receiver is electrically connected with the third motor, when the third motor is started, the first power gear drives the first stressed gear to rotate and further drives the third threaded rod to rotate, the left and right first threaded sleeves move relatively due to opposite thread directions of the third threaded rod on the left and right sides of the first stressed gear so as to drive the two first sliding shielding plates to open or close, a fourth threaded rod is connected between the front inner wall and the rear inner wall of the lower-layer cavity through a third bearing, a second stressed gear is fixedly connected to the middle portion of the fourth threaded rod, the thread directions of the fourth threaded rod on the front and rear sides of the second stressed gear are opposite, and second threaded sleeves are in threaded connection on the front and rear sides of the fourth threaded rod, the rear ends of the two second threaded sleeves are fixedly connected with a second connecting block, the rear end of the second connecting block is fixedly connected with a second sliding shielding plate, the front part of the right end face in the lower cavity of the fixed shielding plate is fixedly connected with a fourth motor, an output shaft of the fourth motor is fixedly connected with a second power gear meshed with the second stressed gear, the lower part of the right end face of the fixed shielding plate is fixedly connected with a fifth signal receiving controller, the fifth signal receiver is electrically connected with the fourth motor, when the fourth motor is started, the second power gear drives the second stressed gear to rotate so as to drive a fourth threaded rod to rotate, as the screw directions of the front side and the rear side of the fourth threaded rod on the second stressed gear are opposite, the front and the rear two second threaded sleeves move relatively so that the shielding plate can drive the two second sliding shielding plates to open or close, the length of the long sides of the first sliding shielding plate and the second sliding shielding plate is equal to the length of the through hole, and the, the through holes can be completely exposed when the remote control system is opened, the through holes can be completely closed when the remote control system is closed, the first sliding shielding plate, the second sliding shielding plate and the fixed shielding plate are all made of lead so as to play a role of blocking radiotherapy rays and enable the radiotherapy rays to only pass through the through holes, the remote control system comprises a first signal transmitter, a second signal transmitter, a third signal transmitter, a fourth signal transmitter, a fifth signal transmitter and a sixth signal transmitter which are respectively matched with a first signal receiving controller, a second signal receiving controller, a third signal receiving controller, a fourth signal receiving controller, a fifth signal receiving controller and a sixth signal receiving controller in a suitable way so as to respectively remotely control the first signal receiving controller, the second signal receiving controller, the third signal receiving controller, the fourth signal receiving controller, the fifth signal receiving controller and the sixth signal receiving controller, the remote control of the first motor, the electric telescopic rod, the second motor, the third motor, the fourth motor and the radiotherapy irradiation device is realized, the left end of the bearing plate is fixedly connected with an external power plug, the external power plug is respectively electrically connected with the first motor, the electric telescopic rod, the second motor, the third motor, the fourth motor and the radiotherapy irradiation device to supply power to the bearing plate, the first motor is started in a remote control mode, the front and back positions of the first movable frame can be adjusted, the front and back positions of the radiotherapy irradiation device and the fixed shielding plate can be changed, the second motor is started in a remote control mode, the left and right positions of the second movable frame can be adjusted, the left and right positions of the radiotherapy irradiation device and the fixed shielding plate can be changed, the radiotherapy irradiation device can be aligned to the tumor of a patient through the cooperation of the first motor, the positioning irradiation is realized, the third motor is started in a remote control mode, the relative positions of the radiotherapy irradiation device and the fixed shielding plate and the through hole are changed, the fourth motor is started by remote control, the two second sliding shielding plates can be controlled to open or close, the relative positions of the radiotherapy irradiation device and the fixed shielding plate and the through hole are changed, the size of the actual accessible area of the through hole can be adjusted by matching the two first sliding shielding plates and the two second sliding shielding plates, so that the irradiation area can be adjusted according to the size degree of the tumor of a patient, before the patient uses the device, the through hole is completely closed at first, the supporting column is rotated to one side, the radiotherapy irradiation device and the fixed shielding plate can be moved to one side for patients with light diseases, the patient can directly lie on the bed plate, for patients with serious diseases, the patient can be lifted on the bed plate in advance, then is placed on the bearing plate along the sliding groove, the supporting column is rotated again, the radiotherapy irradiation device and, so that the radiotherapy irradiation device and the fixed shielding plate move to the position right above the tumor of the patient, the electric telescopic rod is started to extend by remote control, so that the position of the radiotherapy irradiation device and the fixed shielding plate is descended and close to the body of the patient, the third motor and the fourth motor are started in a remote control way, so as to adjust the size of the actual passing area of the through hole by adjusting the two first sliding shutters and the two second sliding shutters, so as to adjust the irradiation area according to the size degree of the tumor of the patient, then remotely control and start the radiotherapy irradiation device, the radiotherapy irradiation device which is always positioned right above the through hole irradiates the tumor of the patient, the first sliding shielding plate, the second sliding shielding plate and the fixed shielding plate which are made of lead can block rays from irradiating other parts of a patient, the operation of the adjusting process is carried out by remote control, manual operation of a doctor is not needed, convenience is achieved, and the situation that the operating personnel are injured by residual rays in the operating process can be prevented.

Furthermore, the lower end of the supporting leg is fixedly connected with a universal wheel with a self-locking device, so that the device can be conveniently carried and fixed.

Furthermore, the upper end face of the bed board is in contact connection with a sterilized cotton pad, so that the bed board is convenient to clean, sterilize and replace, and cross infection is prevented.

Furthermore, the bottom surface is equipped with a plurality of ball grooves in the spout, and the ball inslot joint has the ball to reduce the friction, make the bed board promote to slide to the bearing plate top.

Furthermore, the rear end of the rotary drum is screwed with a fastening knob so as to fasten the support column.

The invention has the beneficial effects that: the first motor and the second motor are started in a remote control mode so as to adjust the positions of the first movable frame and the second movable frame, and the radiotherapy irradiation device can be aligned to the tumor of the patient to realize positioning irradiation; the third motor and the fourth motor are started in a remote control mode, so that the opening or closing of the two first sliding shielding plates and the two second sliding shielding plates can be controlled, the relative positions of the two first sliding shielding plates and the through holes are changed, and the size of the actual accessible area of the through holes is adjusted, so that the irradiation area can be adjusted according to the size degree of the tumor of the patient; the radiotherapy irradiation device and the fixed shield plate can move to one side by virtue of the rotary drum and the support column, a patient with a light disease can directly lie on the bed plate, and for a patient with a serious disease condition, the patient can be lifted onto the bed plate in advance, then put onto the bearing plate along the sliding groove, and the support column is rotated again, so that the radiotherapy irradiation device and the fixed shield plate can move to the upper side of the bed plate; the operation of adjustment process is carried out by the remote control, need not doctor manual operation, and is not only convenient, also can prevent that operating personnel is hurt to residual ray in the operation process.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present invention.

FIG. 2 is a schematic view of the cross-sectional structure of the bearing plate and the bed plate of the present invention.

Fig. 3 is a schematic diagram of the internal structure of the first movable frame and its related components according to the present invention.

Fig. 4 is a schematic diagram of the internal structure of the second movable frame and its related components according to the present invention.

FIG. 5 is a schematic view of the fixed shield of the present invention in a first cavity.

FIG. 6 is a schematic view of the fixing shield in the second cavity according to the present invention

FIG. 7 is a schematic diagram of the connection between the main electronic components of the present invention.

Detailed Description

The present invention will be described in detail below with reference to fig. 1 to 7.

As shown in figures 1-7 and taking figure 1 as an orientation reference, the invention comprises a bearing plate 1, a bed plate 4, a fixed shielding plate 25 and a remote control system 44, wherein four corners of the lower end surface of the bearing plate 1 are fixedly connected with supporting legs 2, the upper end surface is provided with two front-back sliding grooves 1-1, the lower end surface of the bed plate 4 is fixedly connected with a sliding rod 3, the sliding rod 3 is inserted in the sliding groove 1-1, a patient with light disease can directly lie on the bed plate 4, a patient with serious disease can be lifted on the bed plate 4 in advance and then placed on the bearing plate 1 along the sliding groove 1-1, four corners of the lower end surface of the bearing plate 1 are all in threaded connection with fixing screws 5, four corners of the lower end surface of the bed plate 4 are all provided with fixing slots 4-1, the upper ends of the fixing screws 5 are inserted in the fixing slots 4-1 so as to fix the bed, the bearing plate is prevented from sliding randomly, a rotary drum 6 is fixedly connected to the rear end of the bearing plate 1, a support column 7 is inserted in the rotary drum 6, a first motor 8 is fixedly connected to the rear portion above the support column 7, a first signal receiving controller 9 is fixedly connected to the upper end of the first motor 8, the first motor and the support column are electrically connected, a first threaded rod 10 connected with the support column 7 in an inserting mode is fixedly connected to the front end of an output shaft of the first motor 8, a forward first limiting rod 11 is fixedly connected to the front side of the top end of the support column 7, the first limiting rod 11 is located above the first threaded rod 10, a first movable frame 12 is connected to the first threaded rod 10 through an external thread, the first limiting rod 11 is connected with a first movable frame 12 in an inserting mode, when the first motor 8 is started, the first threaded rod 10 is driven to rotate, the first movable frame 12 cannot rotate under the action of the first limiting rod 11, so that the first movable frame 12 can move back and forth, first connecting, an electric telescopic rod 14 is fixedly connected to the outward ends of the two first connecting rods 13, a second signal receiving controller 15 is fixedly connected to the top end of the electric telescopic rod 14, the two electric telescopic rods are electrically connected, a second limiting rod 16 is fixedly connected between the lower parts of the two electric telescopic rods 14, a second motor 17 is fixedly connected to the right end of the lower part of the right electric telescopic rod 14, a third signal receiving controller 18 is fixedly connected to the upper end of the second motor 17, the two electric telescopic rods are electrically connected, a second threaded rod 19 which is connected with the right electric telescopic rod 14 in an inserting manner is fixedly connected to the left end of an output shaft of the second motor 17, the left end of the second threaded rod 19 is connected with the left electric telescopic rod 14 through a first bearing 20, the second threaded rod 19 is positioned below the second limiting rod 16, a second movable frame 21 is in threaded connection with the second threaded rod 19, the second limiting rod 16 is connected with the second movable frame 21 in, because the second moving frame 21 can not rotate under the action of the second limiting rod 16, the second moving frame 21 can move left and right, the lower end of the second moving frame 21 is fixedly connected with a radiotherapy irradiation device 22, the front end surface of the second moving frame 21 is fixedly connected with a sixth signal receiving controller 23, the radiotherapy irradiation device 22 is electrically connected with the sixth signal receiving controller 23, the lower parts of the left and right side surfaces of the second moving frame 21 are fixedly connected with L-shaped second connecting rods 24, the lower ends of the two second connecting rods 24 are fixedly connected with the left and right sides of a fixed shielding plate 25, the horizontal position of the upper end surface of each second connecting rod 24 is lower than the horizontal position of the bottom surfaces of the left and right electric telescopic rods 14, so that when the second moving frame 21 moves left and right, the second connecting rod 24 can not collide with the lower part of the electric telescopic rod 14, and an upper cavity 25-1 and a lower cavity 25, a square through hole 25-3 which is through up and down is arranged in the middle, a third threaded rod 27 is connected between the front parts of the inner walls of the left side and the right side of the upper cavity 25-1 through a second bearing 26, a first stressed gear 28 is fixedly connected to the middle part of the third threaded rod 27, the thread directions of the third threaded rod 27 on the left side and the right side of the first stressed gear 28 are opposite, first threaded sleeves 29 are respectively in threaded connection with the left side and the right side of the third threaded rod 27, first connecting blocks 30 are fixedly connected to the rear ends of the two first threaded sleeves 29, a first sliding shielding plate 31 is fixedly connected to the rear end of each first connecting block 30, a third motor 32 is fixedly connected to the left side of the front end face in the upper cavity 25-1 of the fixed shielding plate 25, a first power gear 33 which is meshed with the first stressed gear 28 is fixedly connected to an output shaft of the third motor 32, a fourth signal receiving controller 34 is fixedly connected to the upper part of the front end face, when the third motor 32 is started, the first power gear 33 drives the first force-bearing gear 28 to rotate, and then drives the third threaded rod 27 to rotate, because the thread directions of the third threaded rod 27 on the left and right sides of the first force-bearing gear 28 are opposite, the left and right first threaded sleeves 29 move relatively, so as to drive the two first sliding shutters 31 to open or close, a fourth threaded rod 36 is connected between the right sides of the front and rear inner walls of the lower cavity 25-2 through a third bearing 35, a second force-bearing gear 37 is fixedly connected in the middle of the fourth threaded rod 36, the thread directions of the fourth threaded rod 36 on the front and rear sides of the second force-bearing gear 37 are opposite, the front and rear sides of the fourth threaded rod 36 are respectively in threaded connection with a second threaded sleeve 38, the rear ends of the two second threaded sleeves 38 are respectively fixedly connected with a second connecting block 39, the rear end of the second connecting block 39 is fixedly connected with a second sliding shutter 40, the front part of the right end face of the fixed shutter 25 in the, a second power gear 42 engaged with the second stressed gear 37 is fixedly connected to an output shaft of the fourth motor 41, a fifth signal receiving controller 43 is fixedly connected to the lower portion of the right end face of the fixed shield 25, the fifth signal receiving controller 43 is electrically connected to the fourth motor 41, when the fourth motor 41 is started, the second power gear 42 drives the second stressed gear 37 to rotate, and further drives the fourth threaded rod 36 to rotate, because the directions of threads of the fourth threaded rod 36 on the front side and the rear side of the second stressed gear 37 are opposite, the front and the rear second threaded sleeves 38 will move relatively, so as to drive the two second sliding shields 40 to open or close, the length of the long side of the first sliding shield 31 and the length of the second sliding shield 40 are equal to the length of the through hole 25-3, the length of the short side is half of the length of the through hole 25-3, so as to ensure that the through hole 25-3 can be completely exposed when the first sliding shield 31 and the second sliding shield 40 can be, the first sliding shielding plate 31, the second sliding shielding plate 40 and the fixed shielding plate 25 are made of lead to block the radiotherapy rays and only pass through the through hole 25-3, the remote control system 44 comprises a first signal emitter 44-1, a second signal emitter 44-2, a third signal emitter 44-3, a fourth signal emitter 44-4, a fifth signal emitter 44-5 and a sixth signal emitter 44-6 which are respectively matched with the first signal receiving controller 9, the second signal receiving controller 15, the third signal receiving controller 18, the fourth signal receiving controller 34, the fifth signal receiving controller 43 and the sixth signal receiving controller 23 for respectively remotely controlling the first signal receiving controller 9, the second signal receiving controller 15, the third signal receiving controller 18, A fourth signal receiving controller 34, a fifth signal receiving controller 43 and a sixth signal receiving controller 23, which are used for remotely controlling the first motor 8, the electric telescopic rod 14, the second motor 17, the third motor 32, the fourth motor 41 and the radiotherapy irradiation device 22, wherein the left end of the bearing plate 1 is fixedly connected with an external power plug 45, the external power plug 45 is electrically connected with the first motor 8, the electric telescopic rod 14, the second motor 17, the third motor 32, the fourth motor 41 and the radiotherapy irradiation device 22 respectively for supplying power to the radiotherapy irradiation device, the first motor 8 is remotely started, the front and back positions of the first movable frame 12 can be adjusted, the front and back positions of the radiotherapy irradiation device 22 and the fixed shielding plate 25 can be changed, the second motor 17 is remotely started, the left and right positions of the second movable frame 21 can be adjusted, the left and right positions of the radiotherapy irradiation device 22 and the fixed shielding plate 25 can be changed, and through the cooperation of the first motor 8, the electric telescopic rod 14, the radiotherapy irradiation device 22 can be aligned to the tumor of the patient to realize the positioning irradiation, the third motor 32 is remotely controlled to be started, the two first sliding shielding plates 31 can be controlled to be opened or closed, the relative positions of the two first sliding shielding plates and the through hole 25-3 can be changed, the fourth motor 41 is remotely controlled to be started, the two second sliding shielding plates 40 can be controlled to be opened or closed, the relative positions of the two first sliding shielding plates and the through hole 25-3 can be changed, and the size of the actual accessible area of the through hole 25-3 can be adjusted through the mutual matching of the two first sliding shielding plates 31 and the two second sliding shielding plates 40, so that the irradiation area can be adjusted according to the.

In this embodiment, the lower end of the supporting leg 2 is fixedly connected with a universal wheel 46 with a self-locking device, so as to facilitate the carrying and fixing of the device.

In this embodiment, the upper end surface of the bed plate 4 is connected with a sterilized cotton pad 47 in a contact manner, so that the bed plate is convenient to clean, sterilize and replace, and cross infection is prevented.

In this embodiment, the inner bottom surface of the sliding groove 1-1 is provided with a plurality of ball grooves 1-2, and balls 48 are clamped in the ball grooves 1-2 so as to reduce friction, so that the bed plate 4 is pushed to slide above the bearing plate 1.

In this embodiment, a fastening knob 49 is screwed to the rear end of the drum 6 so as to fasten the support post 7.

Before the patient uses the device, the through hole 25-3 is completely closed and the support column 7 is rotated to one side, so that the radiotherapy irradiation device 22 and the fixed shielding plate 25 move to one side, the patient with light disease can directly lie on the bed plate 4, the patient with serious disease can be lifted onto the bed plate 4 in advance, then the patient is placed on the bearing plate 1 along the sliding groove 1-1, the support column 7 is rotated again, the radiotherapy irradiation device 22 and the fixed shielding plate 25 move to the upper side of the bed plate 4, the first motor 8 and the second motor 17 are remotely started, the radiotherapy irradiation device 22 and the fixed shielding plate 25 move to the position right above the tumor of the patient, the electric telescopic rod 14 is remotely started to extend, the radiotherapy irradiation device 22 and the fixed shielding plate 25 descend to be close to the body of the patient, the third motor 32 and the fourth motor 41 are remotely started, and the through hole 25-3 can be adjusted to be actually communicated by adjusting the two first sliding shielding plates 31 and the two second sliding shielding plates 40 The size of the over-area is used for adjusting the irradiation area according to the size degree of the tumor of the patient, then the radiotherapy irradiation device 22 is remotely controlled to be started, the radiotherapy irradiation device 22 which is always positioned right above the through hole 25-3 irradiates the tumor of the patient, the first sliding shielding plate 31, the second sliding shielding plate 40 and the fixed shielding plate 25 which are made of lead block rays to irradiate other parts of the patient, the operation of the adjusting process is performed by remote control, the manual operation of a doctor is not needed, the operation is not only convenient, but also the situation that the residual rays hurt operators in the operation process can be prevented.