Source storage device, radioactive source transfer system and source changing system of radiotherapy equipment

Abstract

The utility model discloses a source storage device, a radioactive source transfer system and a source changing system of radiotherapy equipment, relates to the technical field of radiotherapy, and aims to solve the problem that the operation of extracting a radioactive source from a source transfer tank is tedious. The source storage device comprises a source storage tank and a shielding plug, a containing cavity with an opening is formed in the source storage tank, and the containing cavity is used for containing a source box; the shielding plug is used for sealing the opening of the accommodating cavity, the shielding plug comprises a shielding plug main body and a plugging piece, a hollow part penetrating through the shielding plug main body is arranged in the axis direction of the shielding plug main body, and the hollow part is communicated with the accommodating cavity; and the plugging piece is arranged in the hollow part, is used for plugging the hollow part, and can be pulled in or pulled out along the axis direction of the shielding plug main body. The source box can enter the containing cavity through the hollow-out part, only the plugging piece needs to be removed when the source box needs to enter and exit from the containing cavity, the whole shielding plug does not need to be removed, and therefore the problem that the operation of extracting the radioactive source from the source conveying tank is tedious is solved. The source storage device provided by the utility model is used for accommodating the source box.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of radiotherapy technology, especially to a source storage device, a radioactive source transfer system and a source exchange system of a radiotherapy device. BACKGROUND

[0002] Gamma knife is an important radiotherapy equipment, which usually uses cobalt 60 for radiotherapy. Cobalt 60 is radioactive and must be produced and transported by professional manufacturers.

[0003] When a radioactive source production unit designs and manufactures a radioactive source transport tank, the transport tank is usually provided with a cavity with an opening and a plug for cooperating with the transport tank. The cavity is used to store the radioactive source, and the plug is used to block the opening of the cavity to ensure the safety of transportation.

[0004] However, the plug of the existing transport tank is usually large in size. The source guide process of the radioactive source requires the entire plug to be removed before the radioactive source is taken out of the cavity. The plug is usually made of metal with high density, such as lead.

[0005] Therefore, it is necessary to provide a source storage device to solve the problem of complicated operation of extracting the radioactive source from the source transport tank. SUMMARY

[0006] The utility model discloses a kind of source storage devices, and it is to solve the problem of complicated operation of extracting the radioactive source from the source transport tank.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] The utility model provides a kind of source storage device, including source storage tank and shielding plug. Wherein, the source storage tank is formed with the opening of containing cavity, and containing cavity is used to accommodate source cassette;Shielding plug is used to close the opening of containing cavity, and the shielding plug includes shielding plug main body and plug piece;Along the axis direction of shielding plug main body, hollow part is provided with the penetration of shielding plug main body, and hollow part is communicated with containing cavity;Plug piece is arranged in hollow part, for plugging hollow part, and plug piece can be pulled into or pulled out along the axis direction of shielding plug main body.

[0009] In this way, when source cassette needs to be taken out of the containing cavity of source storage tank, or source cassette needs to be placed in containing cavity, plug piece can be only removed, so that source cassette enters containing cavity communicated with hollow part from hollow part, without removing the entire shielding plug. Compared with shielding plug, the weight of plug piece is much smaller than the weight of shielding plug, so as to solve the problem of complicated operation of extracting the radioactive source from the source transport tank.

[0010] In some embodiments of the present application, the hollow part is a stepped hollow.

[0011] In some embodiments of the present application, the stepped hollow part of the hollow part is used to accommodate the source cartridge.

[0012] In some embodiments of the present application, the end of the plug close to the accommodation cavity is provided with a source cartridge connecting part, which is used to connect with the source cartridge.

[0013] In some embodiments of the present application, the end of the plug away from the accommodation cavity is provided with a pull rod connecting part, which is used to connect with the pull rod.

[0014] In some embodiments of the present application, the source cartridge connecting part is provided with a first threaded hole, and the source cartridge is provided with a first threaded part which is threadedly connected in the first threaded hole.

[0015] In some embodiments of the present application, the source cartridge connecting part is provided with a first through hole, and the source cartridge is provided with a first hook which is hooked in the first through hole.

[0016] In some embodiments of the present application, the pull rod connecting part is provided with a second threaded hole, and the end of the pull rod is provided with a threaded section which is threadedly connected in the second threaded hole.

[0017] In some embodiments of the present application, the pull rod connecting part is provided with a clamping groove, and the end of the pull rod is provided with a clamping block which is clamped with the clamping groove.

[0018] In some embodiments of the present application, the source storage device further comprises a transportation protection tool, which comprises a shielding cover, a base, a support and a connecting assembly; wherein the shielding cover is arranged on the periphery of the source storage tank, and the size from the top of the shielding cover to the bottom of the source storage tank is greater than the height of the source storage tank along the height direction of the source storage tank; the source storage tank and the shielding cover are arranged on the base, and the support is arranged spaced apart from the base along the height direction of the source storage tank, the support is arranged around the periphery of the shielding cover, and the connecting assembly is connected between the base and the support.

[0019] The present application also provides a radioactive source transfer system, which comprises any one of the above source storage devices and further comprises a source guiding device. The source guiding device comprises a source guiding tank, a pull rod assembly and a shielding door. The source guiding tank forms a source storage space inside, and the source guiding tank is provided with a source guiding opening and a pull rod through hole at two ends respectively. The source guiding opening can be communicated with the hollow part to form a moving channel, and the plug can be pulled into or pulled out through the moving channel. The pull rod assembly comprises a pull rod which is connected with the pull rod connecting part of the plug and extends into or out of the source storage space through the pull rod through hole. The shielding door is arranged at the source guiding opening of the source guiding tank and can move relative to the source guiding opening to close or open the source guiding opening.

[0020] In some embodiments of the present application, the radioactive source transfer system further comprises a guide plate which is used to guide the direction of pulling the plug in or out and is arranged at the end of the plug away from the accommodation cavity.

[0021] The application also provides a source changing system of a radiotherapy device, which comprises any one of the above radiotherapy source transfer systems and a radiotherapy device provided with a source storage bin.

[0022] In this way, the source changing system of the radiotherapy device provided by the application does not need to remove the shielding plug as a whole when the source capsule needs to be introduced into the radiotherapy device during the source changing process. Instead, the plug and the source capsule connected with the plug are removed together, and then the source capsule is introduced into the radiotherapy device through the source guide tank, which greatly simplifies the source changing process and solves the problem of complicated extraction operation of the radiotherapy source from the source transfer tank. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 A schematic diagram of a source storage device provided by the embodiment of the application;

[0025] Figure 2 A schematic diagram of a shielding plug provided by the embodiment of the application;

[0026] Figure 3 A schematic diagram of a shielding plug provided by the embodiment of the application;

[0027] Figure 4 A schematic diagram of a shielding plug provided by the embodiment of the application;

[0028] Figure 5 A schematic diagram of a shielding plug provided by the embodiment of the application;

[0029] Figure 6 A schematic diagram of a shielding plug provided by the embodiment of the application;

[0030] Figure 7 A schematic diagram of a shielding plug provided by the embodiment of the application;

[0031] Figure 8 A schematic diagram of a source guide device provided by the embodiment of the application;

[0032] Figure 9 A schematic diagram of a source guide tank provided by the embodiment of the application;

[0033] Figure 10 A schematic view of a lifting structure provided for an embodiment of the present application;

[0034] Figure 11 A schematic view of a source guide tank provided for an embodiment of the present application;

[0035] Figure 12 A schematic view of a source guide tank provided for an embodiment of the present application;

[0036] Figure 13 A schematic view of a source exchange system provided for an embodiment of the present application.

[0037] Reference signs:

[0038] Source storage device - 100; source storage tank - 1; containing cavity - 10; source cartridge - 300;

[0039] Shielding plug - 2; shielding plug body - 21; hollow part - 210; first hollow section - 2101; second hollow section - 2102; plug blocking piece - 22; first section - 221; second section - 222; source cartridge connecting part - 2201; first threaded hole - 22010; first through hole - 22011; pull rod connecting part - 2202; clamping groove - 22021;

[0040] Source cartridge - 300; first threaded part - 301; first hook - 302;

[0041] Pull rod - 400; threaded section - 401; clamping block - 402;

[0042] Shielding cover - 51; base - 52; support - 53; connecting assembly - 54; auxiliary support plate - 55;

[0043] Source guide tank - 61; guide plate - 6100; source storage space - 610; source guide port - 6101; pull rod through hole - 6102; pull rod assembly - 62; shielding door - 63;

[0044] First connecting rod - 701; first connecting shaft - 702; and first support shaft - 703; fixed socket - 704; lifting lug - 705; first sliding groove - 7010;

[0045] Radiotherapy device - 700; source storage bin - 710;

[0046] Lead door - 81; first opening - 8101; second opening - 8102; third opening - 8103; shielding block - 8104; driving structure - 82; second connecting rod - 8201; second connecting shaft - 8202; second support shaft - 8203; second sliding groove - 8204;

[0047] Shielding ring - 9. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0049] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified, the above directional description can be flexibly arranged in the actual application process under the condition of meeting the relative positional relationship shown in the drawings.

[0050] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0051] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "communicating" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the embodiments of the present application, the terms "including", "containing" or any other variant thereof are intended to cover non-exclusive containing, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitation, the element defined by the sentence "including a" does not exclude the presence of another identical element in the process, article or device including the element.

[0053] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration, in no way limiting. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or having more advantages than other embodiments or design schemes. Rather, the words such as "exemplary" or "for example" are used in the specific manner to present the relevant concept.

[0054] The radiotherapy equipment usually uses a radioactive substance as a radiation source, in order to ensure safety, the storage and transportation of the radioactive source usually need to be stored by using the source storage tank to avoid the influence of leakage radiation on safety.

[0055] The existing source storage tank for storing the radioactive source usually includes a tank body with a containing cavity, and a plug for plugging the cavity. In this way, the radioactive source can be placed in the cavity of the tank body, and then plugged with the plug to avoid leakage and ensure safety. However, the plug is usually made of metal with high density, such as lead, which leads to the self-weight of the plug being large, the plug being difficult to remove, and the operation difficulty of extracting the radioactive source from the source storage tank being increased.

[0056] To solve the above problems, the present application provides a source storage device, as shown in the drawings, Figure 1 The source storage device 100 provided by the present application includes a source storage tank 1, and a containing cavity 10 with an opening is formed in the source storage tank 1, and the containing cavity 10 is used for accommodating a source cassette 300.

[0057] It should be noted that the source cassette 300 is used for accommodating the radioactive source, so as to carry and transfer the radioactive source, and avoid direct exposure of the radioactive source to the outside.

[0058] The source storage device 100 provided by the present application further includes a shielding plug 2 for closing the opening of the containing cavity 10. In this way, the radioactive source accommodated in the containing cavity 10 can be ensured not to leak by closing the containing cavity 10 through the shielding plug 2, and the safety of transportation or storage is ensured. It should be noted that in order to play an effective shielding role, the shielding plug and the source storage tank are usually made of metal with high density, such as metal lead.

[0059] As shown in the drawings, Figure 1 The shielding plug 2 includes a shielding plug body 21 and a plug member 22. As shown in the drawings, Figure 2 Along the axis direction of the shielding plug body 21, a hollow part 210 penetrating through the shielding plug body 21 is arranged, and the hollow part 210 is in communication with the containing cavity 10 of the source storage tank 1.

[0060] In this way, the source cassette which needs to be accommodated in the containing cavity 10 can be in and out of the containing cavity 10 through the hollow part 210 in communication with the containing cavity 10.

[0061] Based on this, the plug 22 is used to seal the hollow part 210. The plug 22 is disposed in the hollow part 210, and the plug 22 can be pulled in or out along the axial direction of the shielding plug body 21.

[0062] In this way, when the source box is placed in the receiving cavity 10, the perforated part 210 can be sealed by the plug 22 to achieve a seal for the perforated part 210 and prevent radiation leakage.

[0063] As described above, the source storage device 100 provided in this application mainly includes a source storage tank 1 and a shielding plug 2. The shielding plug 2 includes a shielding plug body 21 and a plugging component 22. The shielding plug body 21 has a perforated portion 210 communicating with the receiving cavity 10, and the plugging component 22 is used to seal the perforated portion 210. This allows the source cartridge to be placed or removed simply by removing the plugging component 22 used to seal the perforated portion 210, leaving the perforated portion 210 in an open state.

[0064] For example, when it is necessary to place the source cartridge into the receiving cavity 10, simply remove the plug 22 located in the perforated portion 210, so that the plug 22 no longer blocks the perforated portion 210, and the perforated portion 210 is connected to the receiving cavity 10. This allows the source cartridge to be pushed into the receiving cavity 10 through the perforated portion 210 on the shielding plug body 21, without needing to remove the entire shielding plug 2; only the plug 22 needs to be removed. It is understood that the weight of the plug 22 is less than the weight of the entire shielding plug 2, and the difficulty of removing only the plug 22 is less than the difficulty of removing the entire shielding plug 2. This solves the problem of cumbersome operation in existing source storage equipment when extracting radioactive sources from the source transport container.

[0065] In some embodiments of this application, such as Figure 2 As shown, the hollow portion 210 is a stepped hollow structure. For example, the hollow portion 210 may include a first hollow section 2101 and a second hollow section 2102. The first hollow section 2101 is closer to the receiving cavity 10 of the storage tank 1 than the second hollow section 2102, and the diameter of the first hollow section 2101 is smaller than the diameter of the second hollow section 2102.

[0066] In this case, the diameter of the plug 22 provided in this application is larger than the diameter of the first hollow section 2101, and the diameter of the plug 22 also needs to be less than or equal to the diameter of the second hollow section 2102. In this way, when the plug 22 is disposed in the hollow portion 210, the diameter of the plug 22 being less than or equal to the diameter of the second hollow section 2102 ensures that the plug 22 can be disposed within the second hollow section 2102 of the hollow portion 210, thereby achieving the function of sealing the hollow portion 210.

[0067] Meanwhile, the diameter of the first hollow section 2101 is smaller than the diameter of the second hollow section 2102, and a step is formed at the joint of the first hollow section 2101 and the second hollow section 2102. Further, the diameter of the plug member 22 is also larger than the diameter of the first hollow section 2101, so that the step formed at the joint of the first hollow section 2101 and the second hollow section 2102 can provide support for the plug member 22, avoiding the plug member 22 from falling into the accommodating cavity 10 through the hollow portion 210, and ensuring that the plug member 22 can effectively seal the accommodating cavity. It is conceivable that the plug member 22 can also be a structure matched with the hollow portion 210, so as to ensure that the plug member 22 can effectively seal the accommodating cavity and will not fall into the accommodating cavity 10 through the hollow portion 210, and the present application will not be described here.

[0068] In some embodiments of the present application, as shown in Figure 3 The plug member 22 can also be a stepped structure. For example, the plug member 22 can include a first section 221 and a second section 222 connected together. The first section 221 is arranged closer to the accommodating cavity than the second section 222. The diameter of the first section 221 matches the diameter of the first hollow section 2101, and the diameter of the second section 222 matches the diameter of the second hollow section 2102, so that the first section 221 of the plug member 22 can be arranged in the first hollow section 2101, and the second section 222 can be arranged in the second hollow section 2102. The step formed at the joint of the first hollow section 2101 and the second hollow section 2102 can abut against the second section 222 of the plug member 22, thereby providing support for the plug member 22, so that the plug member 22 can be arranged in the hollow portion 210.

[0069] It should be noted that the diameter of the first section 221 matches the diameter of the first hollow section 2101, and the diameter of the second section 222 matches the diameter of the second hollow section 2102, which means that the diameter of the first section 221 should be less than or equal to the diameter of the first hollow section 2101, the diameter of the second section 222 should be less than or equal to the diameter of the second hollow section 2102, and the diameter of the second section 222 should also be larger than the diameter of the first hollow section 2101.

[0070] In this way, it can be ensured that the first section 221 of the plug member 22 can be arranged in the first hollow section 2101, the second section 222 of the plug member 22 can be arranged in the second hollow section 2102, and the second section 222 of the plug member 22 can abut against the step formed at the joint of the first hollow section 2101 and the second hollow section 2102, avoiding the plug member 22 from falling into the accommodating cavity 10.

[0071] In addition, in some embodiments, in order to enable the plug 22 to better seal the hollow portion 210, the diameter of the first section 221 of the plug 22 can be equal to the diameter of the first hollow section 2101, and the diameter of the second section 222 of the plug 22 can be equal to the diameter of the second hollow section 2102. In this way, when the plug 22 is placed in the hollow portion 210, the first section 221 of the plug 22 can be tightly fitted with the first hollow section 2101, and the second section 222 of the plug 22 can be tightly fitted with the second hollow section 2102. In this way, the hollow portion 210 can be better sealed,

[0072] When the hollow portion 210 of the shielding plug body 21 is provided in a stepped shape, a part of the stepped hollow portion 210 can be used to accommodate the source cartridge. That is, when the source cartridge is accommodated in the accommodation cavity 10, a part of the source cartridge can also be accommodated in the hollow portion 210. In this way, the source storage device 100 provided by the present application can accommodate a source cartridge with a length greater than the accommodation cavity 10, that is, the source storage device 100 provided by the present application can fully utilize the depth of the source storage tank 1, and can accommodate a larger source cartridge without changing the size of the source storage tank 1 itself, thereby improving the effective loading capacity of the source storage device 100 provided by the present application, fully utilizing the height space of the source tank, and the same height of the source tank can accommodate a longer source cartridge, thereby improving the application flexibility of the source storage device 100.

[0073] In addition, in some embodiments of the present application, the accommodation cavity 10 and the hollow portion 210 of the source storage tank 1 can be a structure conforming to the source cartridge. In this way, when the source cartridge is accommodated in the accommodation cavity 10 and the hollow portion 210, the inner wall of the accommodation cavity 10 and the hollow portion 210 can support the source cartridge, ensuring that the source cartridge can be stably placed in the accommodation cavity 10. At the same time, it can also play a better role in shielding radiation.

[0074] As shown in FIG. 1, Figure 3 As shown in FIG. 1,

[0075] On the other hand, the source cartridge is connected with the source cartridge connecting portion 2201 of the plug 22, so that the source cartridge can be taken out together with the plug 22, which is convenient for taking out the source cartridge. It can be understood that when it is necessary to place the source cartridge in the accommodation cavity 10, the source cartridge can be connected with the source cartridge connecting portion 2201 of the plug 22 first, and then the plug 22 and the source cartridge are placed together. When the plug 22 is placed in the hollow portion 210 and the plugging of the hollow portion 210 is completed, the source cartridge also enters the accommodation cavity 10.

[0076] In addition, it should be noted that in the conventional guide source process, the shielding plug 2 is usually removed as a whole before the source magazine is taken out. The shielding plug 2 provided in the present application is composed of a shielding plug main body 21 and a plug member 22, wherein the plug member 22 is connectable with the source magazine through a source magazine connecting portion 2201. In this way, since the plug member 22 is connected with the source magazine, the source magazine can be taken out at the same time as the plug member 22 is taken out. The process of separately removing the shielding plug 2 at the guide source site can be avoided, greatly simplifying the guide source work intensity, improving the guide source efficiency and safety.

[0077] In some embodiments of the present application, the plug member 22 and the source magazine can also be fixedly connected, i.e. the plug member 22 and the source magazine connecting portion 2201 are fixedly connected, for example, the plug member 22 can be connected with the source magazine connecting portion 2201 by welding. In this way, during storage and transportation, only the integrated structure of the plug member 22 and the source magazine needs to be put in or pulled out. On this basis, in order to take and place the plug member 22, the end of the plug member 22 away from the accommodation cavity 10 is also provided with a pull rod connecting portion 2202 (see Figure 3 ), which is used to connect with a pull rod.

[0078] It should be noted that the pull rod is used to connect with the plug member 22, and the plug member 22 is pushed and pulled through the pull rod, so as to realize pulling the plug member 22 out of the hollow portion 210 or pushing the plug member 22 into the hollow portion 210.

[0079] In some embodiments of the present application, as shown in Figure 4 , the source magazine connecting portion 2201 is provided with a first threaded hole 22010, based on which the source magazine 300 is provided with a first threaded member 301. In this way, the first threaded member 301 of the source magazine 300 can be threadedly connected in the first threaded hole 22010, realizing the connection between the source magazine 300 and the source magazine connecting portion 2201, and thus realizing the connection between the source magazine 300 and the plug member 22.

[0080] When it is needed to place the source magazine 300 in the accommodation cavity 10, the source magazine 300 is first threadedly connected with the plug member 22 through the first threaded hole 22010 and the first threaded member 301, so that the source magazine 300 is connected with the plug member 22, and then the plug member 22 is connected with the pull rod, the plug member 22 connected with the source magazine 300 is pushed into the hollow portion 210 through the pull rod, and the source magazine 300 connected with the plug member 22 is also pushed into the accommodation cavity 10.

[0081] In some other embodiments of the present application, as shown in Figure 5As shown, the source box connecting portion 2201 is provided with a first through hole 22011, and based on this, the source box 300 is provided with a first hook 302. The first hook 302 is hung in the first through hole 22011. In this way, the connection between the source box 300 and the plug member 22 can be achieved by hanging the first hook 302 provided on the source box 300 in the first through hole 22011 of the source box connecting portion 2201.

[0082] In this way, when it is necessary to place the source box 300 in the accommodation cavity 10, the source box 300 and the plug member 22 are connected through the first hook 302 and the first through hole 22011, so that the source box 300 is hung on the plug member 22. Then, the plug member 22 is connected with the pull rod, the plug member 22 connected with the source box 300 is pushed into the hollow portion 210 through the pull rod, and the source box 300 connected with the plug member 22 is also pushed into the accommodation cavity 10. The source box 300 can be hung in the accommodation cavity 10, so that the source box 300 can avoid direct contact with the bottom of the accommodation cavity 10, thereby reducing the force of the source tank 1 acting on the source box 300 when the source tank 1 is jolted or collided during transportation, ensuring the stability of the source box 300 during transportation, and making the transportation safer.

[0083] In addition, in some embodiments of the present application, the source box connecting portion 2201 can further be provided with a first clamping portion 22013, and the source box 300 can be provided with a second clamping portion 303. The plug member 22 and the source box 300 can be connected by clamping each other through the first clamping portion 22013 and the second clamping portion 303. For example, the first clamping portion 22013 can be a clamping groove, and the second clamping portion 303 can be a clamping block. In this way, the clamping block is inserted into the clamping groove, the clamping block and the clamping groove are clamped with each other, and the connection between the plug member 22 and the source box 300 is achieved.

[0084] As shown in the drawings, Figure 6 In some embodiments of the present application, the pull rod connecting portion 2202 provided on the plug member 22 is provided with a second threaded hole 22020, and based on this, one end of the pull rod 400 is provided with a threaded segment 401. In this way, the threaded segment 401 of the pull rod 400 is screwed into the second threaded hole 22020. The plug member 22 and the pull rod 400 are connected through the second threaded hole 22020 and the threaded segment 401.

[0085] When it is necessary to push or pull the plug member 22 into or out of the hollow portion 210 through the pull rod 400, the threaded segment 401 of the pull rod 400 can be screwed with the second threaded hole 22020 provided on the pull rod connecting portion 2202, so as to achieve the connection between the pull rod 400 and the plug member 22, and then achieve the pushing or pulling of the plug member 22.

[0086] In some other embodiments of the present application, as Figure 7As shown, the pull rod connecting portion 2202 is provided with a clamping groove 22021, and one end of the pull rod 400 is provided with a clamping block 402 based on this.

[0087] When it is necessary to push or pull out the plug 22 in the hollow portion 210 through the pull rod 400, the clamping block 402 of the pull rod 400 can be clamped with the clamping groove 22021 provided on the pull rod connecting portion 2202, so as to realize the connection between the pull rod 400 and the plug 22, and then realize the pushing or pulling out of the plug 22.

[0088] As shown in the figure, Figure 1 In order to ensure the safety of transportation and storage, the storage device 100 provided by the application further comprises a transportation protection tool, which mainly comprises a shielding cover 51, and the shielding cover 51 is arranged on the periphery of the storage tank 1. Along the height direction of the storage tank 1, the size from the top of the shielding cover 51 to the bottom of the storage tank 1 is greater than the height of the storage tank 1. That is, the shielding cover 51 is arranged on the upper periphery of the storage tank 1 to further shield the area where the opening of the containing cavity 10 (the hollow portion 210) is directed, and further reduce the risk of radiation leakage.

[0089] The above-mentioned transportation protection tool further comprises a base 52 and a support 53, wherein the storage tank 1 and the shielding cover 51 are arranged on the base 52. Based on this, along the height direction of the storage tank 1, the support 53 is arranged in a spaced manner with the base 52, the support 53 is arranged around the periphery of the shielding cover 51, and the support 53 is used to provide support for the shielding cover 51, so as to ensure that the shielding cover 51 can be stably arranged above the storage tank 1.

[0090] Based on this, the transportation protection tool further comprises a connecting assembly 54 connected between the base 52 and the support 53. The connecting assembly 54 is used to provide support for the support 53.

[0091] Further, in some embodiments of the application, as shown in the figure, Figure 1 The transportation protection tool can further comprise an auxiliary support plate 55, which is sleeved with the outer periphery of the storage tank 1, and the auxiliary support plate 55 is connected with the connecting assembly 54. The auxiliary support plate 55 can provide support for the storage tank 1, and reduce the possibility of the storage tank 1 from falling or shaking.

[0092] On this basis, the application further provides a radioactive source transfer system, which comprises any one of the above-mentioned storage devices 100. As shown in the figure, Figure 8As shown, the radioactive source transfer system further comprises a source guiding device, the source guiding device comprises a source guiding tank 61, an inner part of the source guiding tank 61 forms a source storage space 610, and the source storage space 610 is used for accommodating the source capsule. The source guiding tank 61 is provided with a source guiding opening 6101 and a pull rod through hole 6102 at two ends respectively. The source guiding opening 6101 can be in communication with the hollow part 210 formed on the shielding plug main body 21 to form a moving channel, and the plug blocking piece 22 can be pulled in or pulled out through the moving channel.

[0093] The source guiding device further comprises a pull rod assembly 62, the pull rod assembly 62 comprises a pull rod 400, the pull rod 400 is connected with the pull rod connecting part 2202 of the plug blocking piece 22, and the pull rod 400 extends into or out of the source storage space 610 of the source guiding tank 61 through the pull rod through hole 6102 provided on the source guiding tank 61. Further, the pull rod assembly 62 can be further inserted into the hollow part 210 and connected with the plug blocking piece 22, so as to pull the plug blocking piece 22 into the source storage space 610 from the hollow part 210, or push the plug blocking piece 22 into the hollow part 210 from the source storage space 610. It should be noted that when the plug blocking piece 22 enters or exits the source storage space 610, the source capsule 300 connected with the plug blocking piece 22 also enters or exits the source storage space 610 together with the plug blocking piece 22.

[0094] It should be noted that the pull rod assembly 62 can be composed of a plurality of pull rods 400 connected together. Connecting a plurality of pull rods 400 together can lengthen the length of the pull rod assembly 62, so as to facilitate pulling the plug blocking piece 22 and / or the source capsule 300 into or out of the source storage space 610.

[0095] As shown in Figure 9 and Figure 13 As shown, the radioactive source transfer system further comprises a shielding door 63, and the shielding door 63 is arranged at the source guiding opening 6101 of the source guiding tank 61. The shielding door 63 can move relative to the source guiding opening 6101, so that the source guiding opening 6101 is closed or opened.

[0096] In this way, when the source capsule needs to be extracted from the source storage tank 1, the shielding door 63 moves relative to the source guiding opening 6101 to open the source guiding opening 6101, so that the source guiding opening 6101 is in communication with the hollow part of the source storage tank 1 to form a moving channel, and then the pull rod assembly 62 can be inserted into the hollow part 210 to be connected with the plug blocking piece 22, so as to pull the plug blocking piece 22 through the pull rod assembly 62 and pull the plug blocking piece into the source storage space 610 of the source guiding tank 61. After the source capsule 300 enters the source storage space 610 together with the plug blocking piece 22, the shielding door 63 moves relative to the source guiding opening 6101 again to close the source guiding opening 6101, so as to avoid that the source capsule placed in the source storage space 610 leaks radiation to the outside.

[0097] It should be noted that the shape of the shielding door 63 can be adapted to the shape of the source port 6101, or the size of the shielding door 63 can be larger than the size of the source port 6101, so that the shielding door 63 can close the source port 6101, thereby giving the radioactive source transport system better shielding.

[0098] In some embodiments of this application, the shielding door 63 is further provided with a limiting structure to restrict the range of movement of the shielding door when it is opened or closed. For example, the shielding door is provided with a limiting groove, and a limiting pin adapted to the limiting groove is provided at the source port. The pin and the source port are fixed in position relative to each other. When the shielding door is moved and the source port is opened, one end of the pin can slide in the limiting groove to restrict the movement of the shielding door. The method of providing the pin and the limiting groove can not only restrict the movement of the shielding door, but also make the movement direction of the shielding door parallel to the plane where the source port is located, so that the source port has better shielding performance.

[0099] It should be noted that other limiting structures can also be set in this embodiment to restrict the movement of the shielding door. This embodiment is only an example to illustrate the way to restrict the movement of the shielding door and does not mean that this application is limited to this.

[0100] For example, in one implementation of the radioactive source transport system in this embodiment, the radioactive source transport system further includes a lifting structure, which is fixedly connected to the shielding door to facilitate the user moving the shielding door via the lifting structure. The lifting structure can be a handle or a lifting assembly, for example... Figure 9 As shown, the lifting structure includes a first linkage rod 701, a first connecting shaft 702, and a first support shaft 703.

[0101] The first linkage 701 and the first support shaft 703 are rotatably connected, and the first support shaft 703 is fixed to the outer wall of the source-conducting tank 61. In one implementation of this embodiment, the first connecting shaft 702 is disposed on the first linkage 701, and the shielding door 63 is connected to the first linkage 701 through the first connecting shaft 702. In this embodiment, the first linkage 701, the first connecting shaft 702, and the first support shaft 703 are provided. When the shielding door 63 is opened or closed by the first linkage 701, the process of moving the shielding door 63 is more convenient and labor-saving. At the same time, it also allows the operator's operating position to be far away from the opening or closing position of the shielding door 63 during the source-conducting process, thereby improving the safety of the operation process.

[0102] Optionally, the lifting structure may also include at least one positioning pin and a fixing socket 704. The fixing socket 704 is provided on the outer wall of the source canister 61. The first linkage rod 701 is provided with a socket (not shown in the figure). At least one positioning pin can pass through the socket and the fixing socket on the first linkage rod to fix the first linkage rod, thereby fixing the shielding door 63 and preventing it from being opened, thus avoiding accidental opening of the shielding door 63 and leakage of the radioactive source.

[0103] Optionally, in one implementation of the source-conducting tank 61 in this embodiment, such as... Figure 9 As shown, at least one lifting lug 705 is also provided on the outer wall of the source tank 61, and the at least one lifting lug 705 is used to lift the source tank 61.

[0104] When multiple lifting lugs 705 are provided on the source source container 61, the lifting lugs 705 are symmetrically arranged on both sides of the outer wall of the source source container 61, so that the process of moving the source source container through the symmetrically arranged lifting lugs is safer and more stable, and avoids tilting. During the process of lifting the source source container through the lifting lugs, the posture of the source source container can also be adjusted, making the movement of the source source container and the assembly of the source source container with other components more convenient.

[0105] like Figure 10 As shown, Figure 10 This is a schematic diagram of a lifting assembly provided in an embodiment of this application. In this assembly, a first sliding groove 701 is provided at one end of a first connecting rod 701. A first connecting shaft 702 is disposed in the first sliding groove 7010. The first connecting shaft 702 can move along the first sliding groove 7010, thereby allowing the shielding door 63 to move along the first sliding groove 7010.

[0106] Optionally, in one application scenario of this embodiment, the first slide 7010 can also limit the movement position of the shielding door to prevent excessive movement of the door and potential radioactive leakage. Simultaneously, the first slide 7010 can also prevent detachment during the use of the first connecting rod 701 and the first connecting shaft 702, improving safety. This embodiment is merely an example illustrating the installation of a lifting structure in a radiation source transfer system and does not represent a limitation of this application.

[0107] In some embodiments of this application, such as Figure 11 As shown, the radioactive source transfer system also includes a lead door 81 and a drive structure 82.

[0108] The lead door 81 forms a channel from a first end of the lead door 81 to another end away from the first end, the channel having a first opening 8101 provided at the first end of the lead door 81 and a second opening 8102 provided at the other end of the lead door 81 away from the first end, the lead door 81 being provided with a third opening 8103 at a side thereof, and a shielding block 8104 being provided in the channel between the first opening 8101 and the second opening 8102, the shielding block 8104 being movable relative to the lead door 81 in a direction away from or towards the third opening 8103 to close or open the channel. A driving structure 82 is connected to the shielding block 8104, and the driving structure 82 is capable of moving the shielding block 8104 in the direction away from or towards the third opening 8103.

[0109] In the source guiding process, as shown in Figure 11 , the lead door 81 is placed below the source guiding tank 61, and the first opening 8101 of the lead door 81 is opposite to the source guiding opening 6101 Figure 13 of the source guiding tank 61.

[0110] As shown in Figure 11 , the driving structure 82 can be a handle or a driving assembly, as shown in Figure 12 , the driving assembly includes a second connecting rod 8201, a second connecting shaft 8202 and a second supporting shaft 8203.

[0111] The second connecting rod 8201 is rotatably connected to the second supporting shaft 8203, and the second supporting shaft 8203 is fixed to the outer wall of the lead door 81.

[0112] The shielding block 8104 Figure 12 is connected to the second connecting rod 8201 through the second connecting shaft 8202, and when the shielding block 8104 is moved, the shielding block 8104 can be moved in the direction away from or towards the third opening 8103 by moving the second connecting rod 8201.

[0113] Optionally, in an implementation manner of the embodiment, the second connecting rod 8201 can be further provided with a second sliding groove 8204 at one end connected to the shielding block 8104, and the second connecting shaft 8203 is arranged in the second sliding groove 8204, and the second connecting shaft 8203 can move along the second sliding groove 8204 to keep the moving track of the shielding block 8104 in a straight line when the shielding block 8104 is moved by the second connecting rod 8201.

[0114] In an implementation form of the present application, the radioactive source transfer system further comprises a shielding ring 9 arranged outside the first opening 8101 of the lead door 81 at the connection position of the guide source tank 61 and the guide source opening 6101, so as to better prevent radioactive source leakage during the guiding of the radioactive source, and thus the radioactive source transfer system of the present application has better shielding performance during use. Figure 13 In some embodiments of the present application, as shown in FIG. 6, the radioactive source transfer system further comprises a guide plate 6100 arranged at the end of the plug away from the accommodation cavity. The guide plate 6100 is used to guide the direction of pulling in or pulling out of the plug, so as to ensure that when the pull rod assembly pulls the plug, the plug can be pulled into the source storage space of the guide source tank.

[0115] On this basis, the present application further provides a source changing system of a radiotherapy device, which comprises the radioactive source transfer system. Figure 13 As shown in FIG. 7, the source changing system of the radiotherapy device further comprises a radiotherapy device 700 provided with a source storage bin 710 for placing the source capsule 300. When the shielding door 63 is opened, the source storage bin 710 can be in communication with the guide source opening 6101 of the guide source tank 61 to form a source changing channel, so that the plug 22 and the source capsule 300 can be pulled in or pulled out through the source changing channel, thereby realizing the source changing of the radiotherapy device.

[0116] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0117] The above is only a specific implementation form of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A source device, characterized by comprising: The source storage device comprises: a source storage tank, in which a receiving cavity with an opening is formed, and the receiving cavity is used for accommodating a source cassette; a shielding plug, which is used for closing the opening of the receiving cavity, and comprises: a shielding plug body, which is provided with a hollow part penetrating through the shielding plug body along the axial direction of the shielding plug body, and the hollow part is communicated with the receiving cavity; a plug member, which is used for plugging the hollow part, is arranged in the hollow part, and can be pulled in or pulled out along the axial direction of the shielding plug body.

2. The source storage device according to claim 1, wherein: the hollow part is a stepped hollow.

3. The source storage device according to claim 2, wherein: a part of the stepped hollow of the hollow part is used for accommodating the source cassette.

4. The source storage device according to claim 1, wherein: an end of the plug member close to the receiving cavity is provided with a source cassette connecting part, and the source cassette connecting part is used for connecting with the source cassette.

5. The source storage device according to claim 1, wherein: an end of the plug member away from the receiving cavity is provided with a pull rod connecting part, and the pull rod connecting part is used for connecting with a pull rod.

6. The source storage device according to claim 4, wherein: the source cassette connecting part is provided with a first threaded hole, the source cassette is provided with a first threaded part, and the first threaded part is threadedly connected in the first threaded hole; or, the source cassette connecting part is provided with a first through hole, the source cassette is provided with a first hook, and the first hook is hung in the first through hole.

7. The source storage device according to claim 5, wherein: the pull rod connecting part is provided with a second threaded hole, an end of the pull rod is provided with a threaded section, and the threaded section is threadedly connected in the second threaded hole; or, the pull rod connecting part is provided with a clamping groove, an end of the pull rod is provided with a clamping block, and the clamping block is clamped with the clamping groove.

8. The reservoir device of claim 1, wherein, The source storage device further comprises: a transportation protection tool, which comprises: a shielding cover, which is arranged on the periphery of the source storage tank, and the size from the top of the shielding cover to the bottom of the source storage tank along the height direction of the source storage tank is greater than the height of the source storage tank; a base, on which the source storage tank and the shielding cover are arranged; a support, which is arranged in the height direction of the source storage tank and is spaced apart from the base, and the support is arranged around the periphery of the shielding cover; a connecting assembly, which is connected between the base and the support.

9. A radioactive source transfer system, characterized by, The source storage device according to any one of claims 1-8; a source guiding device, which comprises: a source guiding tank, in which a source storage space is formed, and two ends are respectively provided with a source guiding opening and a pull rod through hole; the source guiding opening can be communicated with the hollow part to form a moving channel, and the plug member can be pulled in or pulled out through the moving channel; a pull rod assembly, which comprises a pull rod, the pull rod is connected with the pull rod connecting part of the plug member, and the pull rod extends into or out of the source storage space through the pull rod through hole; a shielding door, which is arranged at the source guiding opening of the source guiding tank and can move relative to the source guiding opening to close or open the source guiding opening. The source guiding device according to any one of claims 9-12.

10. A source changing system of a radiotherapy apparatus, characterized by, ​ The radioactive source transfer system of claim 9; The radiotherapy device is provided with a source storage bin for placing the source capsule, and the source storage bin can communicate with the source guide port to form a source exchange channel, so that the plug and the source capsule can be pulled in or pulled out through the source exchange channel.

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