An installation device for a hospital neutron irradiator

Abstract

The present invention discloses an installation device for a hospital neutron irradiator, which relates to the field of neutron irradiators. Aiming at the problems that the end of the existing hospital neutron irradiator is not convenient for stable installation and it is not convenient to shield and dust-proof the covering opening, the following scheme is proposed. It includes a neutron irradiator, an irradiation port, a shielding cylinder, a base, and a pedestal. A groove body is opened on the lower end surface of the base, and a limiting groove is opened on the upper end surface of the pedestal. The upper inner walls of the groove body are all rotatably connected with screw rods. The lower ends of the screw rods are threadedly sleeved with threaded cylinders and sliding plates. The lower end surface of the sliding plate is fixedly connected with a limiting platform and is rotatably connected with clamping plates in an array. A threaded fastening mechanism is arranged in the chute and the circular groove, and a clamping mechanism is arranged between the irradiation port and the shielding cylinder. This device can conveniently shield and dust-proof the irradiation port, and at the same time can conveniently, efficiently, accurately and stably install the irradiation end of the neutron irradiator.

Description

Technical Field

[0001] The present invention relates to the field of neutron irradiators, and in particular to an installation device for a hospital neutron irradiator. Background Art

[0002] In 1936, G.L. Locher proposed the idea of boron neutron capture therapy (BNCT). In 1951, William.H. Sweet et al. first applied BNCT to the treatment of glioblastoma. Limited by the conditions at that time, the treatment was not successful. In the late 1960s, after studying at Massachusetts General Hospital, Harvard University, Japanese scholar H. Hatamaka was very interested in BNCT. After returning to Japan, he and Sweet et al. still persisted in researching and improving this technology. They found a boron-containing drug that can be specifically absorbed and concentrated by tumors, and improved the quality of the neutron beam. After half a century of exploration and practice, the standard technology of thermal neutron capture therapy was finally established in Japan first. After the treatment of glioblastoma in stages III and IV, an unprecedented record of a 5-year survival rate of more than 30% was achieved. The treatment effect for small and superficial tumors is particularly good. However, due to the poor penetration ability of thermal neutrons in human tissues, this technology still includes a surgical operation. Therefore, in recent years, in BNCT research and clinical trials, an epithermal neutron beam for treating deep-seated tumors that does not require a surgical operation has been widely adopted in European and American countries (including Japan). The first and second phases of clinical trials have been passed, and the third-phase efficacy trial is being carried out.

[0003] However, compared with the large equipment at the rear end, the existing irradiation end of boron neutron capture therapy is generally not convenient for stable installation. At the same time, due to the lack of a suitable shielding device in the existing irradiation end, the inside of the irradiation end is vulnerable to dust invasion. Therefore, an installation device for a hospital neutron irradiator is proposed. Summary of the Invention

[0004] An installation device for a hospital neutron irradiator proposed by the present invention solves the problems that the existing hospital neutron irradiator end is not convenient for stable installation and is not convenient for shielding and dust-proofing the covering port.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An installation device for a hospital neutron irradiator, comprising a neutron irradiator, an irradiation port, a shielding cylinder, a base, and a pedestal. The lower end face of the base is arrayed with grooves, and the upper end face of the pedestal is arrayed with limit grooves. The upper inner wall of each groove is rotatably connected with a screw rod. The lower end of the screw rod is threadedly sleeved with a threaded cylinder, and the upper end of the threaded cylinder is fixedly sleeved with a sliding plate. The lower end face of the sliding plate is fixedly connected with a limit platform. The lower end face of the sliding plate is arrayed with rotatably connected clamping plates. The lower end face of the base is provided with a sliding groove, and the upper end face of the pedestal is provided with a circular groove. A threaded fastening mechanism is arranged between the sliding groove and the circular groove, and a clamping mechanism is arranged between the irradiation port and the shielding cylinder.

[0007] Preferably, the threaded fastening mechanism includes limit sliding rods, a disc, a bolt cylinder, a first motor, a first gear, an annular gear, and bolts. The upper inner wall of the sliding groove is arrayed with fixedly connected limit sliding rods. The surface of each limit sliding rod is slidably sleeved with a disc. The lower end face of the disc is arrayed with fixedly connected bolt cylinders. The lower inner wall of the circular groove is fixedly installed with a first motor, and the output end of the first motor is fixedly connected with an annular gear. The lower inner wall of the circular groove is arrayed with rotatably connected bolts. The surface of each bolt is fixedly sleeved with a first gear, and the annular gear is meshed with the first gear.

[0008] Preferably, the clamping mechanism includes an annular clamping groove and limit claws. The front side of the neutron irradiator is provided with an annular clamping groove. The rear side of the shielding cylinder is arrayed with fixedly connected limit claws. The rear sides of the limit claws are slidably arranged in the annular clamping groove. A threaded sleeve is arranged between the outer side of the shielding cylinder and the irradiation port.

[0009] Preferably, the base is fixedly connected to the lower end face of the neutron irradiator, and the length and width dimensions of the horizontal cross-sections of the base and the pedestal are equal.

[0010] Preferably, the grooves and the limit grooves are arrayed and correspondingly arranged. The upper ends of the screw rods rotatably sleeved in each groove all extend above the upper end face of the base through the upper inner wall of the groove.

[0011] Preferably, the threaded cylinders all extend below the sliding plate, and the sliding plate is slidably arranged in the groove. The limit platform is fixedly connected to the lower end face of the sliding plate and fixedly sleeved on the outer side of the threaded cylinder. The outer side of the limit platform is inclined.

[0012] Preferably, the outer edges of the lower end face of the sliding plate are all rotatably connected with clamping plates through spring hinges. The mutually adjacent sides of the clamping plates are all limited with the respective limit platforms on one side, and the lower ends of the clamping plates are mutually clamped with the limit cards.

[0013] Preferably, the disc is slidably arranged in the chute, and a spring is fixedly connected between the upper end surface of the disc and the upper inner wall of the chute, and the spring is sleeved on the surface of the limit slide bar.

[0014] Preferably, the bolt cylinders arranged in upper and lower arrays and the bolts are correspondingly arranged and are threadedly sleeved with each other.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. Through the neutron irradiator, irradiation port, shielding cylinder, base, pedestal, trough body, limit groove, screw rod, slide plate, threaded cylinder, limit platform, clamping plate, chute, limit slide bar, disc, bolt cylinder, circular groove, first gear, annular gear, annular clamping groove, limit clamping claw, bolt, when installing the device, the shielding cylinder can be first threadedly sleeved on the irradiation port and then screwed in, so that the limit clamping claws fixedly connected to the rear end of the shielding cylinder in an array can slide into the annular clamping groove and be limited with it, and thus the shielding cylinder can be flexibly installed, which can effectively prevent dust from entering the irradiation port;

[0017] 2. When installing, the neutron irradiator can be first hoisted above the pedestal so that the base and the pedestal can be mutually attached. Then, by respectively rotating each screw rod to drive the threaded cylinder and the slide plate to slide downward in the trough body, the lower end of the clamping plate can gradually slide into the limit groove and abut against the lower inner wall thereof. Then, under the action of the abutment, the lower ends of the clamping plates will overcome the elastic force of the spring hinge, rotate away from each other and expand to be limited with the limit groove, thereby preliminarily positioning between the pedestal and the base. At this time, the bolt cylinders fixedly connected to the lower end surface of the disc in an array will respectively be correspondingly attached to the bolts, and compress the springs thereon. At this time, by starting the first motor to drive the annular gear to rotate, the first gear and the bolts can be driven to rotate, so that each bolt can be threadedly sleeved with the bolt cylinder on its respective side, and at the same time, the disc is pulled to slide downward in the limit slide bar and the chute until the lower end surface of the disc is limited with the lower end of the limit slide bar, and thus the irradiation port at the irradiation end can be stably installed, making it possible to perform fastening connection installation conveniently, efficiently, accurately and stably.

[0018] The device has the characteristics that it can conveniently shield dust from the irradiation port and can conveniently, efficiently, accurately and stably install the irradiation end of the neutron irradiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the structure of an installation device for a hospital neutron irradiator according to the present invention.

[0020] Figure 2 It is a cross-sectional view of the bottom view structure of the base of an installation device for a hospital neutron irradiator according to the present invention.

[0021] Figure 3 This is a cross-sectional view of the top-down structure of an installation device for a hospital neutron irradiator according to the present invention.

[0022] Figure 4 This is a magnified cross-sectional view of a partial structure of an installation device for a hospital neutron irradiator according to the present invention.

[0023] Reference numerals in the figure: 1 neutron irradiator, 2 irradiation port, 3 shielding cylinder, 4 base, 5 pedestal, 6 tank body, 7 limit groove, 8 screw rod, 9 sliding plate, 10 threaded cylinder, 11 limit table, 12 clamping plate, 13 sliding groove, 14 limit slide bar, 15 disc, 16 bolt cylinder, 17 circular groove, 18 first gear, 19 annular gear, 20 annular clamping groove, 21 limit claw, 22 bolt. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0025] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0026] Embodiment 1

[0027] Refer to Figures 1-4As shown in the figure, an installation device for a hospital neutron irradiator includes a neutron irradiator 1, an irradiation port 2, a shielding cylinder 3, a base 4, and a pedestal 5. The lower end surface of the base 4 is arrayed with groove bodies 6, and the upper end surface of the pedestal 5 is arrayed with limiting grooves 7. The upper inner wall of each groove body 6 is rotatably connected with a screw rod 8. The lower end of the screw rod 8 is threadedly sleeved with a threaded cylinder 10, and the upper end of the threaded cylinder 10 is fixedly sleeved with a sliding plate 9. The lower end surface of the sliding plate 9 is fixedly connected with a limiting platform 11. The lower end surface of the sliding plate 9 is arrayed with rotatably connected clamping plates 12. The lower end surface of the base 4 is provided with a sliding groove 13, and the upper end surface of the pedestal 5 is provided with a circular groove 17. A threaded fastening mechanism is arranged between the sliding groove 13 and the circular groove 17. A clamping mechanism is arranged between the irradiation port 2 and the shielding cylinder 3. The threaded fastening mechanism includes a limiting sliding rod 14, a disc 15, a bolt cylinder 16, a first motor, a first gear 18, an annular gear 19, and a bolt 22. The upper inner wall of the sliding groove 13 is arrayed with fixedly connected limiting sliding rods 14. The surface of each limiting sliding rod 14 is slidably sleeved with a disc 15. The lower end surface of the disc 15 is arrayed with fixedly connected bolt cylinders 16. The lower inner wall of the circular groove 17 is fixedly installed with a first motor, and the output end of the first motor is fixedly connected with an annular gear 19. The lower inner wall of the circular groove 17 is arrayed with rotatably connected bolts 22. The surface of each bolt 22 is fixedly sleeved with a first gear 18. The annular gear 19 is meshed with the first gear 18. The clamping mechanism includes an annular clamping groove 20 and a limiting claw 21. The front side of the neutron irradiator 1 is provided with an annular clamping groove 20. The rear side of the shielding cylinder 3 is arrayed with fixedly connected limiting claws 21. The rear side of the limiting claw 21 is slidably arranged in the annular clamping groove 20. The shielding cylinder 3 is threadedly sleeved between the outer side surface of the irradiation port 2. Then, during use, the shielding cylinder 3 can be first threadedly sleeved on the irradiation port 2 and then screwed in, so that the limiting claws 21 fixedly connected to the rear end of the shielding cylinder 3 can slide into the annular clamping groove 20 and be limited therewith. Thus, the shielding cylinder 3 can be flexibly installed through the threaded sleeving with the irradiation port 2 and the rotational limit between the limiting claw 21 and the annular clamping groove 20, and the irradiation port 2 can be effectively shielded, making the irradiation port 2 recessed relative to the shielding cylinder 3. Thus, dust can be effectively prevented.

[0028] Embodiment 2

[0029] Refer to Figures 1-4As shown, in the case where other parts are the same as those in Embodiment 1, the difference between this embodiment and Embodiment 1 lies in that the base 4 is fixedly connected to the lower end face of the neutron irradiator 1, the length and width dimensions of the horizontal cross-section of the base 4 and the base 5 are equal, the respective troughs 6 and the limiting grooves 7 are arranged in an array corresponding to each other, the upper ends of the screws 8 rotatably sleeved in each trough 6 all extend above the upper end face of the base 4 through the upper inner wall of the trough 6, the threaded cylinders 10 all extend below the sliding plate 9, and the sliding plate 9 is slidably arranged in the trough 6. The limiting platform 11 is fixedly connected to the lower end face of the sliding plate 9 and fixedly sleeved on the outer side surface of the threaded cylinder 10. The outer side surface of the limiting platform 11 is inclined. The outer edges of the lower end face of the sliding plate 9 are all rotatably connected to the clamping plates 12 through spring hinges. The mutually approaching side surfaces of the respective clamping plates 12 are mutually limited with the limiting platforms 11 on their respective sides, and the lower ends of the clamping plates 12 and the limiting card 7 are mutually clamped. The disc 15 is slidably arranged in the chute 13. A spring is fixedly connected between the upper end face of the disc 15 and the upper inner wall of the chute 13, and the spring is sleeved on the surface of the limiting slide rod 14. The bolt cylinders 16 and the bolts 22 arranged in an upper and lower array are correspondingly arranged and are mutually threadedly sleeved. During installation, the neutron irradiator 1 can be first hoisted above the base 5 so that the base 4 and the base 5 can be mutually attached. Then, by respectively rotating the respective screws 8, the threaded cylinders 10 and the sliding plate 9 threadedly sleeved at their lower ends can be driven to slide downward in the trough 6, thereby pushing the lower ends of the clamping plates 9 to gradually slide into the limiting groove 7 and abut against its lower inner wall. Then, under the action of the abutment, the lower ends of the respective clamping plates 12 will overcome the elastic force of the spring hinge, rotate and unfold away from each other and be limited by the limiting groove 7, so as to perform preliminary positioning between the base 5 and the base 4. At this time, the bolt cylinders fixedly connected to the lower end face of the disc 15 in an array will first respectively abut against and correspond to the upper ends of the respective bolts, so that the disc 15 can be abutted and slide upward in the chute 13 and compress the spring thereon. At this time, by starting the first motor to drive the annular gear 19 to rotate, the first gear 18 and the bolt 22 can be driven to rotate, so that the respective bolts 22 can be threadedly sleeved with the bolt cylinders 16 on their respective sides. At the same time, by pulling the disc 15 to slide downward in the limiting slide rod 14 and the chute 13 until the lower end face of the disc 15 is mutually limited with the lower end of the limiting slide rod 14, the stable installation of the irradiation port 2 at the irradiation end can be realized, so that the fastening connection and installation can be carried out conveniently and efficiently.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An installation device for a hospital neutron irradiator, comprising a neutron irradiator (1), an irradiation port (2), a shielding cylinder (3), a base (4), and a pedestal (5). The lower end surface of the base (4) is arrayed with groove bodies (6), and the upper end surface of the pedestal (5) is arrayed with limiting grooves (7). Characterized in that, The upper inner wall of each groove body (6) is rotatably connected with a screw rod (8). The lower end of the screw rod (8) is threadedly sleeved with a threaded cylinder (10), and the upper end of the threaded cylinder (10) is fixedly sleeved with a sliding plate (9). The lower end surface of the sliding plate (9) is fixedly connected with a limiting platform (11). The lower end surface of the sliding plate (9) is arrayed with rotatably connected clamping plates (12). The lower end surface of the base (4) is provided with a sliding groove (13), and the upper end surface of the pedestal (5) is provided with a circular groove (17). A threaded fastening mechanism is arranged between the sliding groove (13) and the circular groove (17), and a clamping mechanism is arranged between the irradiation port (2) and the shielding cylinder (3); The outer edges of the lower end surface of the sliding plate (9) are rotatably connected with clamping plates (12) through spring hinges. The mutually adjacent side surfaces of the clamping plates (12) are mutually limited with the limiting platform (11) on their respective sides, and the lower ends of the clamping plates (12) are mutually clamped with the limiting grooves (7); The threaded fastening mechanism includes a limiting sliding rod (14), a disc (15), a bolt cylinder (16), a first motor, a first gear (18), an annular gear (19), and a bolt (22). The upper inner walls of the sliding groove (13) are arrayed with fixedly connected limiting sliding rods (14). The surfaces of the limiting sliding rods (14) are slidably sleeved with a disc (15). The lower end surface of the disc (15) is arrayed with fixedly connected bolt cylinders (16). The lower inner wall of the circular groove (17) is fixedly installed with a first motor, and the output end of the first motor is fixedly connected with an annular gear (19). The lower inner wall of the circular groove (17) is arrayed with rotatably connected bolts (22). The surface of each bolt (22) is fixedly sleeved with a first gear (18), and the annular gear (19) is meshed with the first gear (18).

2. The installation device for a hospital neutron irradiator according to claim 1, Characterized in that, The clamping mechanism includes an annular clamping groove (20) and a limiting clamping claw (21). The front side surface of the neutron irradiator (1) is provided with an annular clamping groove (20). The rear side surface of the shielding cylinder (3) is arrayed with fixedly connected limiting clamping claws (21). The rear sides of the limiting clamping claws (21) are slidably arranged in the annular clamping groove (20), and the outer side surface of the shielding cylinder (3) is threadedly sleeved between the irradiation ports (2).

3. The installation device for a hospital neutron irradiator according to claim 2, Characterized in that, The base (4) is fixedly connected to the lower end surface of the neutron irradiator (1), and the length and width dimensions of the horizontal cross-sections of the base (4) and the pedestal (5) are equal.

4. The installation device for a hospital neutron irradiator according to claim 3, Characterized in that, Each of the slots (6) is arranged in an array corresponding to the limit slots (7). The upper ends of the screws (8) rotatably sleeved in each slot (6) all extend through the upper inner wall of the slot (6) and are above the upper end surface of the base (4).

5. The mounting device for a hospital neutron irradiator according to claim 4, characterized in that, The threaded cylinders (10) all extend below the sliding plate (9), and the sliding plate (9) is slidably arranged in the slot (6). The limit platform (11) is fixedly connected to the lower end surface of the sliding plate (9) and fixedly sleeved on the outer side surface of the threaded cylinder (10). The outer side surface of the limit platform (11) is inclined.

6. The mounting device for a hospital neutron irradiator according to claim 5, characterized in that, The disc (15) is slidably arranged in the sliding groove (13). A spring is fixedly connected between the upper end surface of the disc (15) and the upper inner wall of the sliding groove (13), and the spring is sleeved on the surface of the limit sliding rod (14).

7. The mounting device for a hospital neutron irradiator according to claim 6, characterized in that, The bolt cylinders (16) arranged in upper and lower arrays and the bolts (22) are correspondingly arranged and are threadedly sleeved with each other.

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