An integrated protective kit for a radiopharmaceutical injector used in nuclear medicine

Abstract

This utility model relates to the technical field of nuclear medicine protective equipment, and in particular to an integrated protective kit for a nuclear medicine radiopharmaceutical injector, which simultaneously achieves effective radiation shielding and prevents contamination caused by exposed needles; it includes a first protective tube and a second protective tube; the first protective tube is sleeved on the outside of the injector's volume tube, and a viewing window is provided on the first protective tube along the length of the injector; the first protective tube also has a first protective cover for closing the viewing window; the second protective tube is sleeved on the outside of the injector needle portion, and the second protective tube is slidably connected to the first protective tube, and a second protective cover is provided at the front end of the second protective tube; the second protective tube also has an opening and closing unit for driving the opening and closing of the second protective cover, and the opening and closing unit is connected to the first protective tube through a transmission mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of nuclear medicine protective equipment, and in particular to an integrated protective kit for a nuclear medicine radiopharmaceutical injector. Background Technology

[0002] Nuclear medicine utilizes radionuclides and their labeled compounds. Once introduced into the human body, these radionuclides participate in metabolic processes and continuously emit radiation. By detecting these radiations externally, the distribution and metabolic changes of the radionuclides within the body can be understood, providing a basis for disease diagnosis and research. In the field of nuclear medicine, the use of syringes to extract and inject radiopharmaceuticals is a common medical procedure. However, traditional protective sleeves offer only one function and cannot simultaneously provide effective radiation shielding while preventing needle exposure and contamination. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, the present invention provides an integrated protective kit for a radiopharmaceutical injector for nuclear medicine.

[0004] This utility model discloses an integrated protective kit for a radiopharmaceutical injector for nuclear medicine, comprising a first protective tube and a second protective tube.

[0005] The first protective tube is sleeved on the outside of the syringe capacity tube. A viewing window is provided on the first protective tube along the length of the syringe. The first protective tube is also provided with a first protective cover for closing the viewing window.

[0006] The second protective tube is sleeved on the outside of the syringe needle part. The second protective tube is slidably connected to the first protective tube. The front end of the second protective tube is provided with a second protective cap. The second protective tube is also provided with an opening and closing unit for driving the second protective cap to open and close. The opening and closing unit is connected to the first protective tube through a transmission mechanism.

[0007] Furthermore, the second protective cover is composed of multiple baffles. The opening and closing unit includes a fixed plate and a rotating plate that are spaced apart along the axial direction of the second protective tube. The rotating plate is connected to the transmission mechanism. The baffles are disposed between the fixed plate and the rotating plate and are evenly distributed along the circumferential direction. Both the fixed plate and the rotating plate have openings for the syringe needle to protrude. The fixed plate has a first path groove and the rotating plate has a second path groove. Each baffle has a rotating shaft on both sides, and the rotating shaft is rotatably connected to the first path groove and the second path groove respectively. The first path groove is an equilateral polygonal groove, and the second path groove is a plurality of radial through grooves distributed in a circle.

[0008] Furthermore, the transmission mechanism includes a rack mounted on the first protective tube and a gear assembly meshing with the rack. The rack is fixedly mounted along the length of the first protective tube, and the gear assembly is connected to the rotating plate.

[0009] Furthermore, a locking element and a resetting element are provided between the second protective tube body and the first protective tube body.

[0010] Furthermore, the locking component includes multiple limiting grooves symmetrically arranged inside the second protective tube. Each limiting groove is provided with a sliding block and a first elastic element. The sliding block is elastically connected to one side inner wall of the limiting groove through the first elastic element. A wedge block is fixed on the side of the sliding block near the first protective tube. A wedge groove adapted to the wedge block is provided on the first protective tube.

[0011] Furthermore, a sliding rod is fixed on the side of the sliding block away from the first protective tube body, and the sliding rod penetrates the inner wall of the limiting groove and extends to the outside.

[0012] Furthermore, the reset component includes several second elastic members disposed on the outer side of the first protective tube and the inner side of the second protective tube, with the two ends of the second elastic members respectively connected to the outer wall of the first protective tube and the inner wall of the second protective tube.

[0013] Furthermore, the inner wall of the first protective tube is provided with a buffer layer.

[0014] Furthermore, the inner wall of the second protective tube is provided with a guide groove, and the outer side of the first protective tube is provided with a guide block that cooperates with the guide groove. The guide block can slide within the guide groove.

[0015] The integrated protective kit for a radiopharmaceutical injector used in nuclear medicine provided by this utility model has the following beneficial effects:

[0016] Both the first and second protective tubes are made of radiation-proof materials. By covering the outside of the syringe's volume tube with the first protective tube, the radiation emitted by radioactive nuclides is blocked, reducing the radiation dose to the operator. By covering the needle with the second protective tube, dynamic protection of the needle is achieved through a sliding connection. When not in use, the second protective cover is closed to prevent the needle from being exposed and causing contamination or puncture risks. When in use, it is automatically opened by the opening and closing unit to ensure convenient operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly described below.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a top view of the structure of this utility model;

[0020] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of section AA in the middle;

[0021] Figure 4 yes Figure 3 A magnified structural diagram of part B in the middle section;

[0022] Figure 5 A schematic diagram of the structure of the second protective cover and opening / closing unit of this utility model;

[0023] The attached diagram is labeled as follows: 1. First protective tube body; 11. Viewing window; 12. First protective cover; 13. Wedge groove; 14. Buffer layer; 15. Guide block; 2. Second protective tube body; 21. Second protective cover; 211. Baffle; 22. Opening and closing unit; 221. Fixing plate; 222. Rotating plate; 223. Opening; 224. First path groove; 225. Second path groove; 23. Guide groove; 3. Transmission mechanism; 31. Rack; 32. Gear assembly; 4. Locking element; 41. Limiting groove; 42. Sliding block; 43. First elastic element; 44. Wedge block; 45. Slide rod; 5. Reset element; 51. Second elastic element. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] See Figure 1-3 As shown in the figure, an integrated protective kit for a nuclear medicine radiopharmaceutical injector according to an embodiment of the present invention includes a first protective tube 1 and a second protective tube 2. Both the first and second protective tubes are made of materials with good radiation shielding properties, such as lead or tungsten alloys, to block the radiation emitted by the agent from spreading to the outside world and reduce the risk of radiation exposure to operators and the surrounding environment.

[0026] In this embodiment, the first protective tube 1 is sleeved on the outside of the syringe capacity tube. A viewing window 11 is provided on the first protective tube 1 along the length of the syringe. The viewing window 11 is made of lead glass, allowing medical personnel to visually observe the syringe scale and drug flow status, while still maintaining the shielding effect against radiation and preventing radiation leakage from the viewing window 11. The first protective tube 1 is also provided with a first protective cover 12 for sealing the viewing window 11, which adopts a magnetic quick-opening structure or a snap-locking system to ensure that the viewing window 11 is normally closed during operation, further enhancing the protective effect.

[0027] In this embodiment, the second protective tube 2 is sleeved on the outside of the syringe needle. The second protective tube 2 is slidably connected to the first protective tube 1. The front end of the second protective tube 2 is provided with a second protective cap 21, which is in a closed state when not injected, effectively preventing radioactive agents from leaking from the needle and avoiding pollution to the surrounding environment. The second protective tube 2 is also provided with an opening and closing unit 22 for driving the opening and closing of the second protective cap 21. The opening and closing unit 22 is connected to the first protective tube 1 through a transmission mechanism 3. Through the opening and closing unit 22 and the transmission mechanism 3, when the operator pushes the second protective tube 2 to slide relative to the first protective tube 1, the transmission mechanism 3 converts this sliding action into the driving force of the opening and closing unit 22. During the retraction phase of the second protective tube 2, the second protective cap 21 automatically opens under the drive of the opening and closing unit 22, exposing the needle. During the forward phase of the second protective tube 2, the second protective cap 21 automatically closes under the drive of the opening and closing unit 22, hiding the needle.

[0028] By adopting the above technical solution, effective shielding against radiation and prevention of contamination caused by exposed needles can be achieved simultaneously.

[0029] As a preferred embodiment of the above technical solution, such as Figure 5 As shown, the second protective cover 21 is composed of multiple baffles 211, and its surface is covered with an anti-radiation coating; the opening and closing unit 22 includes a fixed plate 221 and a rotating plate 222 that are spaced apart along the axial direction of the second protective tube body 2. The rotating plate 222 is connected to the transmission mechanism 3. The baffles 211 are disposed between the fixed plate 221 and the rotating plate 222 and are evenly distributed along the circumferential direction. Both the fixed plate 221 and the rotating plate 222 have openings 223 for the syringe needle to protrude. The fixed plate 221 has a first path groove 224 and the rotating plate 222 has a second path groove 225. Each baffle 211 has a rotating shaft on both sides, and the rotating shaft is rotatably connected to the first path groove 224 and the second path groove 225 respectively. The first path groove 224 is an equilateral polygonal groove, and the second path groove 225 is a plurality of radial through grooves distributed in a circle.

[0030] In this embodiment, the first path groove 224 and the second path groove 225 are used to constrain the movement path of the rotating shaft, thereby controlling the movement of the baffle 211. As the rotating plate 222 rotates, when the baffles 211 are close together, they cooperate to form a closed protective cover structure to block the opening 223, hide the syringe needle, and complete the automatic closing of the second protective cover 21. When the baffles 211 are separated, the opening 223 is exposed, the syringe needle can be protruded, and the second protective cover 21 is opened, exposing the needle. The sliding action of the second protective tube 2 is converted into the rotation of the rotating plate 222 through the transmission mechanism 3, thereby controlling the opening and closing of the baffle 211. The entire operation process is smooth and flexible.

[0031] As a preferred embodiment of the above technical solution, such as Figure 3 As shown, the transmission mechanism 3 includes a rack 31 mounted on the first protective tube 1 and a gear assembly 32 meshing with the rack 31. The rack 31 is fixedly mounted along the length of the first protective tube 1, and the gear assembly 32 is connected to the rotating plate 222.

[0032] In this embodiment, the gear assembly 32 consists of multiple cooperating gears, including an input gear meshing with the rack 31, an intermediate transition gear for changing the torque direction, and an output gear connecting the rotating plate 222. Through the movement of the rack 31, the input gear converts the linear motion of the rack 31 into its own rotational motion, and then transmits the rotational motion to the subsequent gears in sequence, ultimately driving the rotating plate 222 to rotate synchronously. The meshing transmission between the rack 31 and the gear assembly 32 is a rigid transmission with extremely high transmission accuracy. By controlling the tooth profile error and assembly clearance of the gears, the opening and closing action of the second protective cover 21 can be precisely matched with the sliding operation of the second protective tube 2, avoiding situations where the protective cover is not opened or closed properly or malfunctions. At the same time, during the gear transmission process, the tooth surfaces are in line contact, resulting in strong load-bearing capacity. Even under frequent operation, it can maintain stable operation, improving the reliability of the protective kit.

[0033] As a preferred embodiment of the above technical solution, such as Figures 1 to 3 As shown, a locking element 4 and a resetting element 5 are also provided between the second protective tube body 2 and the first protective tube body 1;

[0034] In this embodiment, the locking element 4 provides physical locking to prevent accidental sliding of the second protective tube 2 during operation. In critical operations such as radioactive agent extraction and injection, locking the tube position can prevent accidental exposure or retraction of the needle, thus avoiding the risk of radioactive material leakage. For example, during injection, the locking element 4 fixes the second protective tube 2 at the needle exposure position, ensuring a stable injection process and reducing the probability of operational errors by medical personnel. The reset element 5 ensures that after the operation is completed, the second protective tube 2 can automatically return to a safe state by releasing the locking element 4, without the need for additional manual operation, further improving operational safety.

[0035] As a preferred embodiment of the above technical solution, such as Figure 4 As shown, the locking component 4 includes a plurality of limiting grooves 41 symmetrically arranged in the second protective tube body 2. Each limiting groove 41 is provided with a sliding block 42 and a first elastic element 43. The sliding block 42 is elastically connected to one side inner wall of the limiting groove 41 through the first elastic element 43. A wedge block 44 is fixed on the side of the sliding block 42 near the first protective tube body 1. A wedge groove 13 adapted to the wedge block 44 is provided on the first protective tube body 1.

[0036] In this embodiment, the first elastic element 43 is the power source of the locking element 4. Initially, it is in a compressed state, continuously providing the sliding block 42 with an elastic thrust towards the outside of the limiting groove 41. When the second protective tube 2 slides relative to the first protective tube 1, the sliding block 42 is subjected to the elastic force of the first elastic element 43 within the limiting groove 41, causing the wedge block 44 to maintain a tendency to move closer to the first protective tube 1. As the second protective tube 2 slides to a specific position, the wedge block 44 gradually aligns with the wedge groove 13 on the first protective tube 1. Due to the adaptive inclined structure of the wedge block 44 and the wedge groove 13, when When the two come into contact, the wedge block 44 is pushed by the elastic force of the first elastic element 43 and gradually embedded along the inclined surface of the wedge groove 13. When the wedge block 44 is fully embedded in the wedge groove 13, the two form a tight locking structure. At this time, the elastic force of the first elastic element 43, through the sliding block 42 and the wedge block 44, firmly locks the second protective tube 2 onto the first protective tube 1. Through the structure of multiple limiting grooves 41, sliding blocks 42 and wedge blocks 44, a multi-point locking method is formed, which disperses the external force on the second protective tube 2 and improves the stability of the locking between the second protective tube 2 and the first protective tube 1.

[0037] In this embodiment, a sliding rod 45 is fixed on the side of the sliding block 42 away from the first protective tube 1. The sliding rod 45 passes through the inner wall of the limiting groove 41 and extends to the outside. The end of the sliding rod 45 is provided with an ergonomic ridge. When it is necessary to unlock, an external force greater than the elastic force of the first elastic member 43 and the friction between the wedge block 44 and the wedge groove 13 is applied to the second protective tube 2 through the ridge. When the reset member 5 pushes the second protective tube 2 to move, the wedge block 44 is subjected to a reverse thrust in the wedge groove 13, which overcomes the elastic force and friction of the first elastic member 43 and gradually exits from the wedge groove 13. At the same time, it drives the sliding block 42 to retract in the limiting groove 41. The first elastic member 43 is recompressed until the wedge block 44 is completely disengaged from the wedge groove 13, and the second protective tube 2 is restored to a sliding state.

[0038] As a preferred embodiment of the above technical solution, such as Figure 3 As shown, the reset component 5 includes a plurality of second elastic members 51 disposed on the outer side of the first protective tube 1 and the inner side of the second protective tube 2, and the two ends of the second elastic members 51 are respectively connected to the outer wall of the first protective tube 1 and the inner wall of the second protective tube 2.

[0039] In this embodiment, the second elastic element 51 is in a pre-compressed state in the initial state, providing an initial elastic force between the first protective tube 1 and the second protective tube 2. When the operator pushes the second protective tube 2 to slide relative to the first protective tube 1, exposing the needle, the second elastic element 51 is further compressed as the second protective tube 2 moves, storing more elastic potential energy. After the operation is completed and the second protective tube 2 is released, the second elastic element 51, which has stored elastic potential energy, begins to release energy and, with its own elastic restoring force, pushes the second protective tube 2 to slide along the first protective tube 1 back to the initial position. Through the uniform distribution of multiple second elastic elements 51, it is ensured that the second protective tube 2 is subjected to uniform force during the reset process, avoiding problems such as tilting or jamming of the protective tube due to uneven force. This allows the second protective tube 2 to slide smoothly along the first protective tube 1 and accurately return to the initial position, ensuring that the second protective cover 21 can close accurately, effectively preventing accidental exposure of the needle, and further improving the reliability of the protection.

[0040] As a preferred embodiment of the above technical solution, such as Figure 3 As shown, the inner wall of the first protective tube 1 is provided with a buffer layer 14.

[0041] In this embodiment, the buffer layer 14 is made of materials such as sponge, silicone or foam plastic, and is filled between the first protective tube 1 and the syringe. When the tube encounters a collision or vibration, the buffer layer absorbs and disperses the impact force with its good elasticity and flexibility, preventing the impact force from directly acting on the syringe and causing damage.

[0042] As a preferred embodiment of the above technical solution, such as Figure 1 As shown, the inner wall of the second protective tube 2 is provided with a guide groove 23, which extends axially along the inner wall of the second protective tube 2 and is a regular elongated groove; the outer side of the first protective tube 1 is provided with a guide block 15 that cooperates with the guide groove 23, which is a rectangular or trapezoidal protrusion structure, and the guide block 15 can slide in the guide groove 23.

[0043] In this embodiment, the movement freedom of the second protective tube 2 is restricted by the cooperation of the guide groove 23 and the guide block 15, so that it can only slide along the axial direction. This ensures that the opening and closing action of the second protective cover 21 is accurate and reliable, preventing the exposure of radioactive materials due to improper opening and closing of the protective cover, and providing more reliable protection for operators and the surrounding environment.

[0044] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An integrated protection kit for a radiopharmaceutical injector for nuclear medicine, characterized in that, It includes a first protective tube (1) and a second protective tube (2); The first protective tube (1) is sleeved on the outside of the syringe capacity tube. A viewing window (11) is provided on the first protective tube (1) along the length of the syringe. The first protective tube (1) is also provided with a first protective cover (12) for closing the viewing window (11). The second protective tube (2) is sleeved on the outside of the syringe needle part. The second protective tube (2) is slidably connected to the first protective tube (1). The front end of the second protective tube (2) is provided with a second protective cover (21). The second protective tube (2) is also provided with an opening and closing unit (22) for driving the second protective cover (21) to open and close. The opening and closing unit (22) is connected to the first protective tube (1) through a transmission mechanism (3).

2. The integrated shielding kit for a radiopharmaceutical injector for nuclear medicine according to claim 1, characterized in that, The second protective cover (21) is composed of multiple baffles (211). The opening and closing unit (22) includes a fixed plate (221) and a rotating plate (222) spaced apart along the axial direction of the second protective tube (2). The rotating plate (222) is connected to the transmission mechanism (3). The baffles (211) are disposed between the fixed plate (221) and the rotating plate (222) and are evenly distributed along the circumferential direction. Both the fixed plate (221) and the rotating plate (222) are provided with syringe needles. The head protrudes through an opening (223), the fixed plate (221) is provided with a first path groove (224), the rotating plate (222) is provided with a second path groove (225), and each of the baffles (211) is provided with a rotating shaft () on both sides, the rotating shaft () being rotatably connected to the first path groove (224) and the second path groove (225) respectively; the first path groove (224) is an equilateral polygonal groove, and the second path groove (225) is a plurality of radial through grooves distributed in a circle.

3. The integrated shielding kit for a radiopharmaceutical injector for nuclear medicine according to claim 2, characterized in that, The transmission mechanism (3) includes a rack (31) disposed on the first protective tube (1) and a gear assembly (32) meshing with the rack (31). The rack (31) is fixedly disposed along the length direction of the first protective tube (1), and the gear assembly (32) is connected to the rotating plate (222).

4. The integrated shielding kit for a radiopharmaceutical injector for nuclear medicine according to claim 1, characterized in that, A locking element (4) and a resetting element (5) are also provided between the second protective tube body (2) and the first protective tube body (1).

5. The integrated shielding kit for a radiopharmaceutical injector for nuclear medicine according to claim 4, characterized in that, The locking element (4) includes a plurality of limiting grooves (41) symmetrically arranged in the second protective tube body (2). Each limiting groove (41) is provided with a sliding block (42) and a first elastic element (43). The sliding block (42) is elastically connected to the inner wall of one side of the limiting groove (41) through the first elastic element (43). A wedge block (44) is fixed on the side of the sliding block (42) close to the first protective tube body (1). The first protective tube body (1) is provided with a wedge groove (13) adapted to the wedge block (44).

6. The integrated shielding kit for a radiopharmaceutical injector for nuclear medicine according to claim 5, characterized in that, The sliding block (42) is fixed with a sliding rod (45) on the side away from the first protective tube (1). The sliding rod (45) passes through the inner wall of the limiting groove (41) and extends to the outside.

7. The integrated shielding kit for a radiopharmaceutical injector for nuclear medicine according to claim 4, characterized in that, The reset component (5) includes a plurality of second elastic members (51) disposed on the outside of the first protective tube (1) and the inside of the second protective tube (2), with the two ends of the second elastic members (51) respectively connected to the outer wall of the first protective tube (1) and the inner wall of the second protective tube (2).

8. The integrated shielding kit for a radiopharmaceutical injector for nuclear medicine according to claim 1, characterized in that, The inner wall of the first protective tube (1) is provided with a buffer layer (14).

9. The integrated shielding kit for a radiopharmaceutical injector for nuclear medicine according to claim 1, characterized in that, The inner wall of the second protective tube (2) is provided with a guide groove (23), and the outer side of the first protective tube (1) is provided with a guide block (15) that cooperates with the guide groove (23). The guide block (15) can slide in the guide groove (23).

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