X-ray photography full-isolation radiation protection device

Abstract

The utility model relates to the technical field of radiation protection, and discloses an X-ray photography full-isolation radiation protection device, which comprises an X-ray photography full-isolation radiation protection device, a central beam limiting system, a beam limiting device position signal communication port, a detector height signal communication port, a peripheral shielding interlayer and an examination room. According to the X-ray photography full-isolation radiation protection device, automatic switching of the protection position and the protection state is completed in time, the shooting efficiency is not affected, and the staying and positioning time of a subject is not increased. The X-ray radiography full-isolation radiation protection device can provide a rapid, effective and accurate X-ray protection effect for DR equipment shooting, and examinees, accompanying family members and technicians do not need to wear protection equipment such as lead clothes, so that the probability that non-examined parts, especially gonads and the like, are exposed to direct X-ray irradiation and scattered ray irradiation is greatly reduced, and the X-ray radiography full-isolation radiation protection device is suitable for being used in X-ray radiography. Furthermore, effective guarantee is provided for the health of examinees and technicians, and important social benefits and popularization value are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of radiation protection, in particular to a fully isolated radiation protection device for X-ray photography. Background Art

[0002] X-ray photography is digital X-ray photography equipment, referred to as DR, which consists of an X-ray tube that emits X-rays, a beam limiter that controls the range of X-ray irradiation, a detector that receives X-ray images, and a computer imaging system. It is widely used in the diagnosis of diseases.

[0003] However, the following problems still exist in the actual operation process: currently in the process of X-ray examination, the examinee needs to complete the examination in the same space as the X-ray tube that emits X-rays. In addition to the direct X-ray irradiation area used for imaging, other parts of the human body that do not need imaging also receive some direct X-rays and a large amount of scattered rays. Moreover, DR physical examination vehicles all perform standing X-ray examinations. Each manufacturer only installs facilities for radiation protection of the surrounding environment. The inspection and acceptance also focus on the leakage of radiation to the surrounding environment. There are almost no protection measures for the examinee. The space of the DR physical examination vehicle is smaller than that of the DR room of the radiology department. The amount and intensity of scattered rays are both large, resulting in a higher radiation dose for the examinee. Moreover, the existing radiation protection devices for the examinee are scarce, and there are only movable lead protective curtains and some wearable lead clothing. The shielding direction and area of ​​these devices are insufficient, and they are completely insufficient to protect the examinee from direct X-rays and scattered rays. For this reason, the utility model provides a fully isolated radiation protection device for X-ray photography. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a fully isolated radiation protection device for X-ray photography, which has the advantage of greatly reducing the leakage and scattered radiation dose to the examinee during standing X-ray examination, and solves the problems raised in the background technology.

[0005] The utility model provides the following technical solutions: an X-ray photography fully isolated radiation protection device, comprising an X-ray photography fully isolated radiation protection device, a central beam limiting system, a beam limiter position signal communication port, a detector height signal communication port, a peripheral shielding interlayer and an inspection room, the X-ray photography fully isolated radiation protection device is provided with peripheral shielding interlayers on both sides, the side of the cavity of the X-ray photography fully isolated radiation protection device is provided with a detector height signal communication port, the outer side of the X-ray photography fully isolated radiation protection device is provided with a beam limiter position signal communication port, and the interior of the cavity of the X-ray photography fully isolated radiation protection device is provided with a Two drum shielding systems, a lifting and hanging system is arranged on the right side of the cavity of the X-ray photography fully isolated radiation protection device, a driving motor is arranged inside the lifting and hanging system, a driving sprocket is fixedly installed on the output end of the driving motor, a chain is meshed on the surface of the driving sprocket, and a central beam limiting system is arranged on the inner wall of the chain, the driving sprocket and chain hanging device described in the lifting and hanging system in the fully isolated radiation protection device uses one of the transmission modes of gear and rack transmission, drum and soft steel wire rope transmission, and screw and nut, and at the same time, the driving motor in the lifting and hanging system uses an electric push rod to complete the motion drive.

[0006] Preferably, empty grooves are respectively provided on the top and bottom of the central beam limiting system, and synchronous belts are arranged inside the empty grooves. A motion drive motor is fixedly installed on the side of the central beam limiting system, and two bidirectional synchronous pulleys are arranged on the output end of the motion drive motor. Linear bearings are arranged on the sides of the two bidirectional synchronous pulleys, and opposite synchronous motion lead pages are fixedly connected on the sides of the linear bearings. The driving mode of the synchronous belts in the two bidirectional synchronous pulleys in the central beam limiting system uses a symmetrical motion mechanism of a bidirectional synchronous pulley and a soft steel wire rope or a gear and a bidirectional motion rack to realize transmission. At the same time, the linear bearing uses a linear transmission structure of a miniature linear guide, a light bar and a copper sleeve.

[0007] Preferably, a tube ball is provided on the side of the inspection room, and a beam limiter is provided on the side of the tube ball.

[0008] Preferably, a detector and a supporting structure thereof are arranged on the side of the inspection room, and a human body model is arranged on the side of the detector and the supporting structure thereof.

[0009] Preferably, a monitoring system is fixedly installed on the side of the inspection room.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The X-ray photography fully isolated radiation protection device blocks most of the scattered rays and part of the direct rays in an independent space in front of the examinee by adding an X-ray photography fully isolated radiation protection device between the tube and the examinee. The examinee is in a relatively isolated separate space, thereby achieving the purpose of greatly reducing the radiation dose of the examinee. The device has a highly efficient isolation effect. Except for the area where the effective rays of the central beam limiting system pass through, other areas are fully covered by X-ray shielding materials (2mm lead equivalent), and it can ensure that there will be no leakage of rays in non-effective areas at any position and in any state. It will change the situation that the examinee of the standing X-ray examination must always be in the same space with the radiation source and receive a large amount of invalid ionizing radiation. It will greatly reduce the radiation dose received by the examinee, greatly protect the personal safety of the examinee and improve the examinee's willingness to be examined. It has a high degree of adaptability, and the peripheral shielding interlayer is a composite that can be adapted to both the DR room of the radiology department and the vehicle-mounted DR room. The sandwich material, its internal decorative layer (non-metallic materials such as wood or plastic) and internal shielding layer (X-ray special shielding materials such as lead plate, barium sulfate plate, etc.) can be arbitrarily cut according to the shape and layout of the room, with flexible layout capabilities, and automatic motion state adjustment and switching functions. Since it can receive information on the detector height and the size and specifications of the DR beam limiter, it does not require manual operation by the technician, and can match the photography needs of the DR equipment in real time, and instantly complete the automatic switching of the protection position and status without affecting the shooting efficiency or increasing the stay and positioning time of the examinee. The X-ray photography fully isolated radiation protection device can provide fast, effective and accurate X-ray protection effects for DR equipment shooting. The examinee, accompanying family members and technicians no longer need to wear protective equipment such as lead clothing, which greatly reduces the probability of non-examination parts, especially gonads, being exposed to direct X-ray irradiation and scattered ray irradiation, further providing effective protection for the health of the examinee and technicians, and has important social benefits and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the utility model device;

[0013] Figure 2 This is a schematic diagram of the structure of the fully isolated radiation protection device for X-ray photography of the utility model;

[0014] Figure 3 It is a schematic diagram of the internal structure of the central beam limiting system of the utility model.

[0015] In the figure: 1. tube ball; 2. beam limiter; 3. detector and its supporting structure; 4. X-ray photography fully isolated radiation protection device; 5. human body model; 6. monitoring system; 7. central beam limiting system; 8. lifting and hanging system; 9. reel shielding system; 10. beam limiter position signal communication port; 11. detector height signal communication port; 12. peripheral shielding interlayer; 13. motion drive motor; 14. bidirectional synchronous pulley; 15. linear bearing; 16. opposite synchronous motion lead sheet; 17. inspection room. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3, an X-ray photography fully isolated radiation protection device, comprising an X-ray photography fully isolated radiation protection device 4, a central beam limiting system 7, a beam limiter position signal communication port 10, a detector height signal communication port 11, a peripheral shielding interlayer 12 and an inspection room 17, the X-ray photography fully isolated radiation protection device 4 is provided with peripheral shielding interlayers 12 on both sides, the side of the cavity of the X-ray photography fully isolated radiation protection device 4 is provided with a detector height signal communication port 11, the outer side of the X-ray photography fully isolated radiation protection device 4 is provided with a beam limiter position signal communication port 10, the interior of the cavity of the X-ray photography fully isolated radiation protection device 4 is provided with two roll shielding systems 9, the X-ray photography A lifting and hanging system 8 is arranged on the right side of the cavity of the fully isolated radiation protection device 4, and a driving motor is arranged inside the lifting and hanging system 8, and a driving sprocket is fixedly installed on the output end of the driving motor, and a chain is meshed on the surface of the driving sprocket, and a central beam limiting system 7 is arranged on the inner wall of the chain. The driving sprocket and chain hanging device described in the lifting and hanging system 8 in the fully isolated radiation protection device 4 may use one of the transmission modes of gear and rack transmission, drum and soft steel wire rope transmission, and lead screw and nut. At the same time, the driving motor in the lifting and hanging system 8 uses an electric push rod to complete the motion drive. This case only lists one of the commonly used methods to illustrate the principle and implementation method. X-ray photography fully isolated radiation A detector height signal communication port 11 is provided on the side of the cavity of the radiation protection device 4, a beam limiter position signal communication port 10 is provided on the outer side of the X-ray photography fully isolated radiation protection device 4, two roller shielding systems 9 are provided inside the cavity of the X-ray photography fully isolated radiation protection device 4, a lifting and hanging system 8 is provided on the right side of the cavity of the X-ray photography fully isolated radiation protection device 4, a driving motor is provided inside the lifting and hanging system 8, a driving sprocket is fixedly installed on the output end of the driving motor, a chain is meshed on the surface of the driving sprocket, and a central beam limiting system 7 is provided on the inner wall of the chain. If the DR detector and the tube beam limiter are changed, the lifting and hanging system 8 and the central beam limiting system 7 It will change in real time according to its height and size specifications to ensure consistency and synchronization to the greatest extent. Due to the shielding of the movable lead leaf inside the central beam limiting system 7, and the effective X-ray shielding effect of the upper and lower roller shielding systems 9 and the peripheral shielding interlayer 12, the examinee is effectively physically isolated from the invalid X-ray radiation area, minimizing the safety threat of invalid radiation to the examinee. The state shown in this scheme is a layout diagram of an X-ray DR examination room with an X-ray photography full isolation radiation protection device 4. The DR examination room can be an X-ray DR examination room in a hospital or a dedicated vehicle-mounted X-ray DR examination room, which is made according to the full width of the examination room 2.0mm lead equivalent (GBZ130-2020) radiation-proof partition wall, lead glass windows and video surveillance intercom system are added for easy observation. The radiation protection of the partition wall can be lead-sheeted wooden wall, barium sulfate board wall or / and consistent with the body protection process of DR inspection vehicle, integrated radiation protection construction. .

[0018] Among them, the top and bottom of the central beam limiting system 7 are respectively provided with empty slots, and the central beam limiting system 7 (X-ray irradiation window) is provided in the middle of the radiation protection partition wall. The upper and lower parts are rollable lead-containing special radiation protection rubbers, and the middle part is the X-ray irradiation window frame. The X-ray irradiation window frame is close to the body of the examinee to reduce scattered rays. The radiation protection partition wall is obliquely extended to the side wall to increase the space for the examinee. The central beam limiting system 7 is connected to the mechanical control circuit of the DR equipment, so that the X-ray irradiation window moves up and down and is linked with the detector and the tube ball 1 (the detector and the tube ball of each DR equipment are designed with an upper and lower synchronous linkage control system). The central beam limiting system 7 (X-ray The control circuit of the size and specification of the irradiation window) is also connected to the beam limiter control circuit of the DR equipment, and is automatically synchronized and adjusted with the size and specification of the irradiated part. The central beam limiting system 7 is designed according to the X-ray tube beam limiter structure of DR, and is made of 4 lead synthetic steel plates to form a movable window with electrically adjustable size and specification. Its size and specification are automatically adjusted with the beam limiter of the DR equipment to adapt to the size of the human body and the specifications of the examination part. The upper and lower ends of the central beam limiting system 7 are installed with rollable protective lead rubber, and lead protective curtains can be moved up and down accordingly. The examiner and the detector are in an isolated examination space, and the X-ray tube and the emitted X-rays are isolated in A separate space, only the inspected part is directly exposed to the X-ray through the X-ray irradiation window, and the other parts are outside the shielding of the isolation device. Parts of both sides should be hidden in the wall with grooves to facilitate up and down follow-up and radiation protection. The examinee and the detector are both in an isolated inspection space, and the X-ray tube and the emitted X-rays are isolated in a separate space. Only the inspected part is directly exposed to the X-ray through the X-ray irradiation window of the central beam limiting system 7, and the other parts are outside the shielding of the isolation device. A synchronous belt is arranged inside the empty slot, and a motion drive motor 13 is fixedly installed on the side of the central beam limiting system 7. The output end of the motion drive motor 13 is provided with two bidirectional Synchronous pulley 14, linear bearings 15 are arranged on the sides of two bidirectional synchronous pulleys 14, and opposite synchronous motion lead sheets 16 are fixedly connected on the sides of linear bearings 15. The driving mode of the synchronous belts in the two bidirectional synchronous pulleys 14 in the central beam limiting system 7 uses a symmetrical motion mechanism such as a bidirectional synchronous pulley and a soft steel wire rope or a gear and a bidirectional motion rack to realize transmission. At the same time, the linear bearings 15 use a linear transmission structure such as a micro linear guide, a light bar and a copper sleeve. The central beam limiting system 7 is divided into an upper and lower layer, and the two layers have the same structure and are arranged at 90 degrees. After obtaining the size and specification information of the tube ball beam light device, the upper and lower layers of the motion drive motor 13 are driven to move respectively.After the motor moves, it drives the bidirectional synchronous pulley 14. Since two sets of pulleys are used for movement, compared with the traditional limiter method of controlling both forward and reverse movements with one pulley, the center distance between the driving wheel and the driven wheel is reduced, the risk of belt transmission loosening is reduced, and the movement accuracy and synchronization effect are improved. The pulley transmission is finally connected to the opposite synchronous motion lead sheet 16 through the linear bearing 15 to achieve the opposite and precise linear motion of the two sets of lead sheets.

[0019] A tube ball 1 is arranged on the side of the inspection room 17 , and a beam limiter 2 is arranged on the side of the tube ball 1 .

[0020] Among them, a detector and its supporting structure 3 are arranged on the side of the inspection room 17. The detector and its supporting structure 3 of the DR equipment are used for imaging and inspection and evaluation of various parts of the human body. However, some direct X-rays and most of the X-ray scattered rays and ineffective X-rays caused by X-ray leakage or insufficient shielding ability of the shooting system are irradiated to the human body. By adding an X-ray photography full isolation radiation protection device 4, most of the ineffective X-rays can be shielded in front of the human body to prevent the human body from being exposed to additional X-rays. A human body model 5 is arranged on the side of the detector and its supporting structure 3.

[0021] Among them, a monitoring system 6 is fixedly installed on the side of the inspection room 17, and the monitoring system 6 can effectively observe the status of the X-ray photography full isolation radiation protection device 4, and confirm and guide whether the shooting requirements are met.

[0022] Working principle, during operation, this scheme reflects the state of the human model 5 during X-ray film examination, wherein, after the X-ray of the DR device is emitted through the tube 1, the main X-ray beam can be limited within a certain shooting range under the action of the beam limiter 2 of the DR device, and after the X-ray passes through the human body inspection part, it is imaged by the detector of the DR device and its supporting structure 3, which is used for the inspection and evaluation of various parts of the human body, but some direct X-rays and most of the X-ray scattered rays and ineffective X-rays caused by X-ray leakage or insufficient shielding ability of the shooting system are irradiated to the human body. After adding the X-ray photography full isolation radiation protection device 4, most of the ineffective X-rays can be shielded in front of the human body to prevent The human body is exposed to additional X-rays. At the same time, the monitoring system 6 can effectively observe the status of the X-ray photography full isolation radiation protection device 4, confirm and guide whether it meets the shooting requirements. At the same time, the human body enters the inspection state, and the DR equipment adjusts the height of the detector and the tube. The X-ray photography full isolation radiation protection device will receive the information of the detector height change through the detector height signal communication port 11. The lifting and hanging system 8 drives the internal drive motor to rotate according to the received information, driving the chain to pull the central beam limiting system 7 to rise or fall. The drum shielding system 9 has a recovery mechanism such as a coil spring inside. The drum shielding system 9 also synchronizes with the movement of the central beam limiting system 7 to retract and release the shielding drum material. When the tube beam limiter When the size specification (depending on the size specification of the shooting part) changes, the X-ray photography fully isolated radiation protection device 4 will also transmit the information of the tube-ball beam limiter change through the beam limiter position signal communication port 10, and the central beam limiter system 7 will synchronously adjust the movement of the four internal lead leaves to ensure that the size and shape of the beam effective area of ​​the tube-ball beam limiter are consistent. During this process, if the DR detector and the tube beam limiter change, the lifting and hanging system 8 and the central beam limiter system 7 will change in real time according to their height and size specifications to ensure consistency and synchronization to the greatest extent. Due to the shielding of the movable lead leaves inside the central beam limiter system 7, and the effective X-ray Shielding effect, effectively physically isolating the examinee from the invalid X-ray radiation area. The central beam limiting system 7 is divided into an upper and lower layer, and the two layers have the same structure and are arranged at 90 degrees. After obtaining the size and specification information of the tube beam light device, the upper and lower layers are driven by the driving motor 13 to move respectively. After the motor moves, it drives the bidirectional synchronous pulley 14. The pulley transmission is finally connected to the opposite synchronous moving lead sheet 16 through the linear bearing 15, so as to realize the opposite and precise linear movement of the two groups of lead sheets. The examinee and the detector are both in an isolated inspection space, and the X-ray tube and the emitted X-rays are isolated in a separate space. Only the examined part is directly exposed to the X-ray through the X-ray irradiation window of the central beam limiting system 7, and other parts are outside the shielding of the isolation device.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully isolated radiation protection device for X-ray photography, characterized in that: The invention comprises an X-ray photography fully isolated radiation protection device (4), a central beam limiting system (7), a beam limiter position signal communication port (10), a detector height signal communication port (11), a peripheral shielding interlayer (12) and an inspection room (17), wherein the X-ray photography fully isolated radiation protection device (4) is provided with peripheral shielding interlayers (12) on both sides, the side of the cavity of the X-ray photography fully isolated radiation protection device (4) is provided with a detector height signal communication port (11), the outer side of the X-ray photography fully isolated radiation protection device (4) is provided with a beam limiter position signal communication port (10), and the interior of the cavity of the X-ray photography fully isolated radiation protection device (4) is provided with two roll screens. A shielding system (9) is provided, a lifting and hanging system (8) is provided on the right side of the cavity of the X-ray photography fully isolated radiation protection device (4), a driving motor is provided inside the lifting and hanging system (8), a driving sprocket is fixedly installed on the output end of the driving motor, a chain is meshed on the surface of the driving sprocket, and a central beam limiting system (7) is provided on the inner wall of the chain, the driving sprocket and chain hanging device described in the lifting and hanging system (8) in the fully isolated radiation protection device (4) may use one of the transmission modes of gear and rack transmission, drum and soft steel wire rope transmission, and screw and nut, and at the same time, the driving motor in the lifting and hanging system (8) uses an electric push rod to complete the motion drive.

2. The X-ray photography fully isolated radiation protection device according to claim 1, characterized in that: The top and bottom of the central beam limiting system (7) are respectively provided with empty grooves, and a synchronous belt is arranged inside the empty groove. A motion driving motor (13) is fixedly installed on the side of the central beam limiting system (7), and two bidirectional synchronous pulleys (14) are arranged at the output end of the motion driving motor (13). Linear bearings (15) are arranged on the sides of the two bidirectional synchronous pulleys (14), and the sides of the linear bearings (15) are fixedly connected with opposite synchronous motion lead sheets (16). The driving mode of the synchronous belts in the two bidirectional synchronous pulleys (14) in the central beam limiting system (7) uses a symmetrical motion mechanism such as a bidirectional synchronous pulley and a soft steel wire rope or a gear and a bidirectional motion rack to realize transmission. At the same time, the linear bearings (15) use a linear transmission structure such as a miniature linear guide, a light bar and a copper sleeve.

3. The X-ray photography fully isolated radiation protection device according to claim 1, characterized in that: A tube ball (1) is arranged on the side of the inspection room (17), and a beam limiter (2) is arranged on the side of the tube ball (1).

4. The X-ray photography fully isolated radiation protection device according to claim 1, characterized in that: A detector and a supporting structure (3) thereof are arranged on the side of the inspection room (17), and a human body model (5) is arranged on the side of the detector and the supporting structure (3) thereof.

5. The X-ray photography fully isolated radiation protection device according to claim 1, characterized in that: A monitoring system (6) is fixedly installed on the side of the inspection room (17).

Images