Protective transportation device for medical radiopharmaceuticals

Abstract

The protective transportation device for the medical radiopharmaceuticals comprises a protective barrel, a protective cover and a plurality of adsorption assemblies arranged in the protective barrel, storage grooves are formed among the adsorption assemblies, the adsorption assemblies are distributed in the circumferential direction of an inner cavity of the protective barrel at equal angles, and the radial sections of the adsorption assemblies are each of a 90-degree fan-shaped structure; each adsorption assembly comprises a plurality of splicing frames, every two adjacent splicing frames are tightly attached, circulating holes are formed in the circumferential outer walls of the splicing frames, the multiple adsorption assemblies distributed in the circumferential direction at equal angles are arranged in the protection barrel, the radial section of each adsorption assembly is of a 90-degree fan-shaped structure, and the multiple adsorption assemblies are formed by stacking the multiple splicing frames; the circulation holes of the adjacent splicing frames are formed in a staggered mode to form a continuous snake-shaped airflow channel, the structure remarkably prolongs the escape path of radioactive gas, the gas is forced to undergo multiple times of steering and diffusion resistance when passing through the multiple adsorption layers, and therefore the leakage risk is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of radiopharmaceutical transportation technology, and more particularly to a protective transportation device for medical radiopharmaceuticals. Background Technology

[0002] In the medical field, radiopharmaceuticals, such as sodium astatine, are widely used in nuclear medicine for disease diagnosis and targeted therapy, playing an irreplaceable and vital role. However, due to the significant radioactivity of these drugs, there are high safety risks during transportation, necessitating strict safety precautions. During decay, these radioactive materials not only release penetrating gamma rays but may also produce neutron radiation, posing potential harm to the surrounding environment and human tissues. Furthermore, under certain conditions, there is a possibility of radioactive gases escaping from containers, further increasing the risk of environmental pollution and inhalation radiation exposure.

[0003] To effectively shield radiation, prevent leakage, and ensure the stability of the transportation process, specialized protective transport equipment conforming to international and national standards must be used, such as lead-shielded containers or composite material transport boxes, equipped with sealing, monitoring, and labeling systems. These measures are crucial for ensuring the safety of transport personnel, the public, and the environment, and are key components of the radiopharmaceutical safety management system.

[0004] Currently, most commonly used radiation shielding transport cylinders are made of lead or lead composite materials, which have a certain gamma-ray shielding capability. Some devices incorporate multi-layered adsorption structures within the cylinder to delay or adsorb potentially leaking radioactive gases. However, the adsorption layer structures in existing technologies are mostly straight-through or simply stacked, resulting in short and unidirectional airflow paths. This leads to short gas escape paths and insufficient residence time, making it difficult for the adsorption material to fully function and posing a high risk of leakage.

[0005] Therefore, it is necessary to provide a protective transport device for medical radiopharmaceuticals to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention overcomes the shortcomings of the prior art and provides a protective transport device for medical radiopharmaceuticals.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a protective transport device for medical radiopharmaceuticals, comprising a protective cylinder, a protective cover, and a plurality of adsorption components disposed within the protective cylinder.

[0008] A storage groove is provided between several adsorption components, and the several adsorption components are distributed at equal angles along the circumference of the inner cavity of the protective cylinder. The radial cross-section of several adsorption components is a 90° fan-shaped structure.

[0009] The adsorption assembly includes: several splicing frames, with two adjacent splicing frames tightly fitted together, and each of the several splicing frames having flow holes on its outer circumferential wall. The flow holes of adjacent adsorption layers are staggered, so that when the several splicing frames are stacked, the flow holes form a continuous serpentine airflow channel.

[0010] In a preferred embodiment of the present invention, a plurality of limiting holes are provided between two adjacent adsorption components, and a limiting rod is engaged in each of the plurality of limiting holes.

[0011] In a preferred embodiment of the present invention, a snap-fit ​​groove is provided at a corresponding position on one side of the inner wall of an adjacent splicing frame, and a snap-fit ​​plate is fixedly connected at a corresponding position on the other side of the inner wall of the adjacent splicing frame.

[0012] In a preferred embodiment of the present invention, the snap-fit ​​plate and the snap-fit ​​groove snap together to form a complementary concave-convex structure.

[0013] In a preferred embodiment of the present invention, a filling groove is provided on the upper surface of each of the splicing frames, and the filling groove is filled with polyethylene radiation shielding material.

[0014] In a preferred embodiment of the present invention, the protective cover is located above the protective cylinder, and the protective cover is threadedly connected to the protective cylinder.

[0015] In a preferred embodiment of the present invention, a rubber sealing ring is provided between the protective cover and the protective cylinder.

[0016] In a preferred embodiment of the present invention, both the protective cover and the protective cylinder are made of lead composite material.

[0017] In a preferred embodiment of the present invention, the bottom of the protective cover is coated with a boron polyethylene coating.

[0018] In a preferred embodiment of the present invention, the diameter of the flow hole is 2-5 mm.

[0019] This invention addresses the shortcomings of the prior art and has the following beneficial effects:

[0020] (1) This invention provides a protective transport device for medical radiopharmaceuticals. By setting several adsorption components with a radial cross-section of 90° fan-shaped structure and equidistant circumferential distribution in the protective cylinder, the adsorption components are composed of multiple stacked splicing frames, and the flow holes of adjacent splicing frames are staggered to form a continuous serpentine airflow channel. This structure significantly extends the path of radioactive gas escape, forcing the gas to undergo multiple turns and diffusion resistance when passing through multiple adsorption layers, thereby effectively reducing the risk of leakage. Compared with the traditional straight-through or simple multi-layer shielding structure, this serpentine channel setting not only increases the gas residence time, but also enhances the physical interception capability of radioactive particles, directly improving the overall sealing performance of the device, avoiding the problem of low protection efficiency caused by short and straight airflow channels in the prior art, and further ensuring the safety of operators and the surrounding environment during transportation.

[0021] (2) This invention provides a protective transport device for medical radiopharmaceuticals. By setting complementary snap-fit ​​plates and snap-fit ​​groove structures between splicing frames and configuring limiting rods and limiting holes between adjacent adsorption components, the device achieves rapid positioning and stable connection of the flow holes between each adsorption layer. Furthermore, it makes the multi-layer adsorption components less prone to misalignment or loosening during assembly and disassembly, thus improving the maintainability and reusability of the device. Compared with the problems of inconvenient assembly and disassembly and easy wear caused by the integral or bolt-fixed structure commonly used in the prior art, the modular splicing setting simplifies the operation process, reduces maintenance costs, and ensures that each layer fits tightly, avoiding radiation leakage paths due to gaps, thereby further improving the integrity of the device structure and the stability of long-term use.

[0022] (3) The present invention provides a protective transport device for medical radiopharmaceuticals. By using a threaded connection between the protective cover and the protective cylinder and setting a rubber sealing ring, and by making both the protective cover and the protective cylinder into lead composite material, and coating the bottom of the protective cover with boron polyethylene coating, this not only achieves a tight lock between the cover and the cylinder through the threaded structure, effectively preventing accidental opening, but also further blocks the leakage of radioactive gas along the gap with the help of the rubber sealing ring. The lead composite material provides efficient shielding against γ-rays, and the boron polyethylene coating at the bottom enhances the absorption capacity of neutron radiation, significantly improving the overall protection. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1This is a partial cross-sectional view of the main body of the first-view device according to a preferred embodiment of the present invention;

[0025] Figure 2 This is a partial cross-sectional view of the second-view device body according to a preferred embodiment of the present invention;

[0026] Figure 3 This is a structural diagram of the device body according to a preferred embodiment of the present invention;

[0027] In the diagram: 1. Protective cylinder; 2. Protective cover; 3. Adsorption assembly; 31. Splicing frame; 32. Clip plate; 33. Clip groove; 34. Flow hole; 35. Limiting rod; 36. Storage slot. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein. Therefore, the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] like Figure 1 As shown, the present invention provides a protective transport device for medical radiopharmaceuticals, comprising a protective cylinder 1, a protective cover 2, and a plurality of adsorption components 3 disposed within the protective cylinder 1.

[0033] like Figures 1-3 As shown, a storage groove 36 is provided between several adsorption components 3, and several adsorption components 3 are distributed at equal angles along the circumferential direction of the inner cavity of the protective cylinder 1. The radial cross section of several adsorption components 3 is a 90° fan-shaped structure.

[0034] It should be noted that the protective cylinder 1 is equipped with several adsorption components, which are distributed at equal angles in a 90° fan-shaped structure, and each component has a storage slot in the center for placing the drug container, to ensure the stability and safety of the container during transportation.

[0035] The adsorption component 3 includes: several splicing frames 31, with two adjacent splicing frames 31 tightly fitted together, and each of the several splicing frames 31 has a flow hole 34 on its outer circumference. The diameter of the flow hole 34 is 2-5mm, and the flow holes 34 of adjacent adsorption layers are staggered, so that when several splicing frames 31 are stacked, the flow holes 34 form a continuous serpentine airflow channel.

[0036] It should be noted that each of the adsorption components 3 is composed of several splicing frames 31, and the flow holes 34 between adjacent splicing frames 31 are arranged in an alternating manner to form a continuous serpentine airflow channel. This not only increases the complexity of the gas flow path, but also makes any radioactive gas that may escape have to undergo multiple turns before it can pass through the entire device.

[0037] The diameter of the flow hole 34 is set to 2-5mm, which ensures appropriate ventilation and effectively controls the gas flow rate, so that gas molecules have more opportunities to come into contact with the adsorbent material and be absorbed.

[0038] Because the flow holes 34 of adjacent adsorption layers are staggered, the gas is forced to travel along a tortuous path when passing through multiple adsorption layers. This not only prolongs the gas residence time, but also enhances the control of the gas flow direction, thereby greatly increasing the chance of the gas being captured by the adsorption material.

[0039] This serpentine airflow channel design directly reduces the risk of leakage, and compared to the traditional straight-through design, it significantly improves sealing performance and protection efficiency.

[0040] Furthermore, as the gas undergoes multiple turns and diffusion resistances as it passes through multiple adsorption layers, this complex flow path actually enhances the physical interception capability of radioactive particles; gas molecules encounter new adsorption surfaces during each turn, and each contact is a potential capture point, effectively reducing the number of uncaptured radioactive particles.

[0041] Furthermore, this multi-layered, multi-directional interception mechanism means that even if some layers fail to completely block all particles, subsequent layers will continue to function, providing additional safety guarantees. This not only enhances the overall protection capabilities of the device but also ensures that a high level of safety standards can be maintained under various conditions, making it particularly suitable for demanding medical radiopharmaceutical transportation scenarios.

[0042] like Figures 1-3 As shown, several limiting holes are provided between two adjacent adsorption components 3, and limiting rods 35 are snapped into each of the limiting holes; a snap-fit ​​groove 33 is provided at a corresponding position on one side inner wall of the adjacent splicing frame 31, and a snap-fit ​​plate 32 is fixedly connected at a corresponding position on the other side inner wall of the adjacent splicing frame 31. The snap-fit ​​plate 32 snaps into the snap-fit ​​groove 33 to form a complementary concave-convex structure.

[0043] The upper surface of several splicing frames 31 is provided with filling grooves, which are filled with polyethylene radiation shielding material.

[0044] It should be noted that the limiting holes and limiting rods 35 provided between adjacent adsorption components 3 are interlocked, so that each adsorption component 3 can be positioned in the circumferential direction and prevent relative rotation or axial displacement. This connection method can achieve a stable connection between components without additional fasteners during assembly, avoiding structural loosening caused by vibration or impact, thereby ensuring the stability of the internal storage slot 36 space and providing a reliable fixing environment for the radiopharmaceutical container.

[0045] Among them, the adjacent splicing frames 31 form a complementary concave-convex structure through the snap-fit ​​plate 32 and the snap-fit ​​groove 33. This setting enables the splicing frames 31 to fit tightly in both the circumferential and radial directions, which not only improves the overall structural strength of the individual adsorption component 3, but also effectively seals the splicing gaps and prevents radioactive gas from forming a short-circuit leakage channel along the splicing interface.

[0046] Meanwhile, the filling groove on the upper surface of the splicing frame 31 is filled with polyethylene radiation shielding material. Polyethylene is rich in hydrogen atoms and has excellent slowing and absorption capabilities for neutron radiation. This material is directly filled into the splicing structure, so that the radiation shielding layer is integrated with the structural components, which significantly improves the radiation shielding performance of the components themselves without increasing the volume.

[0047] The sealing structure, together with the limiting, snapping and filling settings of the internal adsorption component 3, realizes a multi-level protective closed loop from the inside to the outside and from the structure to the material, so that the whole device forms an organic unity in mechanical stability, leakage prevention performance and radiation shielding capability, which is significantly better than the traditional transport container protective cylinder 1 that only relies on a single seal or simple stacking structure.

[0048] like Figures 1-3 As shown, the protective cover 2 is located above the protective cylinder 1. The protective cover 2 and the protective cylinder 1 are both made of lead composite material and are connected by threads. The bottom of the protective cover 2 is coated with boron polyethylene coating. A rubber sealing ring is provided between the protective cover 2 and the protective cylinder 1.

[0049] It should be noted that the structure and materials of the protective cover 2 and the protective cylinder 1 achieve a unified effect of efficient radiation shielding and sealing.

[0050] Specifically, the protective cover 2 and the protective cylinder 1 are connected by a thread. After being rotated and tightened, they can generate a continuous and uniform axial clamping force, ensuring that the mating surfaces of the two are tightly fitted. This structure not only facilitates quick opening and closing by manual or tool operation, but also has good anti-vibration and loosening ability, avoiding the risk of the cover accidentally loosening due to bumps during transportation, thus providing a stable and reliable sealing foundation for the entire device.

[0051] Both the protective cover 2 and the protective cylinder 1 are made of lead composite material. Lead has a high linear attenuation coefficient for γ-rays, which can effectively absorb and block high-energy photons released by radiopharmaceuticals. The composite material form can optimize the overall weight and structural strength while ensuring shielding performance.

[0052] Based on this, the bottom of the protective cover 2 is additionally coated with a boron polyethylene coating. The hydrogen atoms in polyethylene can effectively slow down neutrons, while boron has an extremely high absorption cross section for thermal neutrons. This coating is specifically designed to supplement the shielding against neutron radiation that may accompany radiopharmaceuticals, and can make up for the deficiency of lead material in its weak neutron protection ability, thereby achieving dual radiation protection against gamma rays and neutrons.

[0053] Furthermore, the rubber sealing ring set between the protective cover 2 and the protective cylinder 1 undergoes elastic deformation under pressure during the thread tightening process, filling the micro-unevenness and gap between the metal threaded connection surfaces, forming a continuous airtight barrier, and preventing radioactive gas from diffusing outward along the thread gap.

[0054] This sealing mechanism, combined with the gamma-ray shielding of lead composite materials and the neutron absorption function of boron polyethylene coating, achieves a high degree of unity in structural sealing and radiation protection integrity in the protective cover area 2. It completely avoids the shortcomings of traditional single metal covers in terms of both sealing and shielding functions, and significantly improves the safety and reliability of the device in high-radioactive environments.

[0055] When using this invention, during installation, take one splicing frame 31 as the bottom layer, align its radial cross-section with a 90° fan-shaped structure with the corresponding position inside the protective cylinder 1 and place it in. Then take a second splicing frame 31, align the snap-fit ​​plate 32 on one side of its inner wall with the snap-fit ​​groove 33 on the other side of the inner wall of the placed splicing frame 31, and push it in smoothly along the axial direction to achieve a tight snap-fit ​​between the two, forming a complementary concave-convex structure connection. Continue to stack the splicing frames 31 layer by layer in the same way. During this process, pay attention to the fact that the flow holes 34 on the adjacent splicing frames 31 should be staggered to ensure that the flow holes 34 are connected after stacking to form a continuous serpentine airflow channel.

[0056] Then, the next adsorption component 3 is installed in the protective cylinder 1 in the same way, with equal angles along the circumference. After the adsorption component 3 is assembled, a limiting rod 35 is inserted into the limiting hole at the top of the component. The limiting rod 35 and the limiting hole cooperate to achieve axial and circumferential limiting, preventing relative rotation or offset between components. After multiple adsorption components 3 are installed in sequence, a closed storage groove 36 is naturally formed in the central area.

[0057] At this point, carefully place the container containing the medical radiopharmaceutical into the storage slot 36, ensuring that it is centered, stable, and without shaking; after all components are installed, align the threads on the inner side of the protective cover 2 with the threads on the outer wall of the upper end of the protective cylinder 1, and slowly rotate and tighten until the protective cover 2 and the protective cylinder 1 are completely sealed. During the tightening process, the rubber sealing ring between the two is compressed and undergoes elastic deformation, filling the thread gap and forming an effective airtight layer.

[0058] Since the bottom of the protective cover 2 is coated with boron polyethylene, and both the protective cover 2 and the protective cylinder 1 are made of lead composite material, the entire device has the dual shielding capability against gamma rays and neutron radiation after the cover is closed.

[0059] During transportation and use, the device body effectively extends the escape path of radioactive gas through the serpentine airflow channel formed by several internal adsorption components 3. The gas must pass through multiple turns and diffusion resistances before it can be released outward, significantly reducing the risk of leakage. At the same time, polyethylene radiation shielding material is filled in the filling groove on the upper surface of the splicing frame 31, further enhancing the neutron absorption performance of the components themselves. When it is necessary to remove the drug, the operation is reversed: rotate counterclockwise to remove the protective cover 2, pull out the limiting rod 35 in sequence, and then disassemble the adsorption components 3 layer by layer to remove the drug container. The whole process is simple to operate and can be reused.

[0060] Based on the preferred embodiments of the present invention described above, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A protective transport device for medical radiopharmaceuticals, comprising a protective cylinder (1), a protective cover (2), and a plurality of adsorption components (3) disposed within the protective cylinder (1), characterized in that: A storage groove (36) is provided between several adsorption components (3), and several adsorption components (3) are distributed at equal angles along the circumferential direction of the inner cavity of the protective cylinder (1). The radial cross section of several adsorption components (3) is a 90° fan-shaped structure. The adsorption component (3) includes: a plurality of splicing frames (31), two adjacent splicing frames (31) are tightly fitted together, and the outer circumferential walls of the plurality of splicing frames (31) are provided with flow holes (34), and the flow holes (34) of adjacent adsorption layers are staggered, so that when the plurality of splicing frames (31) are stacked, the flow holes (34) form a continuous serpentine airflow channel.

2. The protective transport device for medical radiopharmaceuticals according to claim 1, characterized in that: Several limiting holes are provided between two adjacent adsorption components (3), and a limiting rod (35) is engaged in each of the limiting holes.

3. The protective transport device for medical radiopharmaceuticals according to claim 1, characterized in that: A snap-fit ​​groove (33) is provided on one side of the inner wall of the adjacent splicing frame (31), and a snap-fit ​​plate (32) is fixedly connected to the corresponding position on the other side of the inner wall of the adjacent splicing frame (31).

4. The protective transport device for medical radiopharmaceuticals according to claim 3, characterized in that: The snap-fit ​​plate (32) and the snap-fit ​​groove (33) snap together to form a complementary concave-convex structure.

5. The protective transport device for medical radiopharmaceuticals according to claim 1, characterized in that: A filling groove is provided on the upper surface of several of the splicing frames (31), and the filling groove is filled with polyethylene radiation shielding material.

6. The protective transport device for medical radiopharmaceuticals according to claim 1, characterized in that: The protective cover (2) is located above the protective cylinder (1), and the protective cover (2) is threadedly connected to the protective cylinder (1).

7. A protective transport device for medical radiopharmaceuticals according to claim 6, characterized in that: A rubber sealing ring is provided between the protective cover (2) and the protective cylinder (1).

8. The protective transport device for medical radiopharmaceuticals according to claim 1, characterized in that: Both the protective cover (2) and the protective cylinder (1) are made of lead composite material.

9. A protective transport device for medical radiopharmaceuticals according to claim 8, characterized in that: The bottom of the protective cover (2) is coated with a boron polyethylene coating.

10. A protective transport device for medical radiopharmaceuticals according to claim 1, characterized in that: The diameter of the flow hole (34) is 2-5 mm.

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