A medical radioactivity meter accurate measurement concentration positioning guide frame
By designing a precise concentration measurement guide frame for medical radioactivity meters, and utilizing a limiting structure and anti-fall device, the problem of drug bottles or needles falling off was solved, achieving efficient and safe radiopharmaceutical detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD AFFILIATED HOSPITAL OF PLA NAVAL MEDICAL UNIVERSITY
- Filing Date
- 2025-07-02
- Publication Date
- 2026-08-04
AI Technical Summary
During the preparation and use of radiopharmaceuticals, there is a risk of radiopharmaceutical vials or syringe needles detaching, which can lead to equipment contamination, interruption of the testing process, and reduced operational efficiency.
A positioning guide frame for precise concentration measurement of a medical radioactivity meter was designed, comprising a positioning frame, a limiting structure, and an anti-fall device. It uses clamping blocks and a ring-shaped anti-fall net to prevent medicine bottles or needles from falling off, and combines magnetic blocks to achieve quick assembly and disassembly.
It effectively prevents medicine bottles or needles from falling off, improves testing efficiency and smoothness, and ensures that testing accuracy is not affected.
Smart Images

Figure CN224594853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical testing auxiliary equipment technology, specifically to a positioning guide frame for precise concentration measurement of a medical radioactivity meter. Background Technology
[0002] In the preparation and use of radiopharmaceuticals, the activity meter is a key device for measuring the concentration of radionuclides. Operators typically use a guide frame, along with a syringe or vial, to perform measurements inside the activity meter. However, with prolonged use, some problems have gradually emerged, causing numerous inconveniences and challenges for operators during actual operation:
[0003] There is a risk that radioactive vials or syringe needles may fall off during operation. If a vial or needle falls off from the side, it may fall directly into the ionization chamber of the activity meter, which will not only contaminate the equipment, but also require interruption of the detection process for cleaning, significantly reducing operational efficiency.
[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned problems and provide a positioning guide frame for precise concentration measurement of a medical radioactivity meter.
[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a positioning guide frame for precise concentration measurement of a medical radioactivity meter, comprising:
[0007] A positioning frame, the positioning frame including a handle and a first telescopic rod connected to the handle, wherein a support plate with through holes is fixedly connected to the outer wall of the first telescopic rod;
[0008] A support base is fixedly connected to the outer wall of the first telescopic rod, and the top of the support base has a first groove and a second groove respectively;
[0009] The limiting structure is set in the first groove and includes a pair of clamping blocks with semi-circular limiting grooves. By moving the pair of clamping blocks toward the same side, medicine bottles of different sizes can be clamped and limited.
[0010] The fall arrest device includes an annular fall arrest net disposed within the second groove.
[0011] Preferably, the limiting structure further includes a device box fixedly connected in the first groove, and the two clamping blocks are respectively named a first limiting block and a second limiting block. The first limiting block is fixedly connected to the inner wall of the device box, and the second limiting block is movably connected to the inner wall of the device box.
[0012] Preferably, at least three sets of elastic reset units are connected to the side of the second limiting block away from the first limiting block;
[0013] The elastic reset unit includes a shock-absorbing spring fixedly connected to the second limiting block. The other end of the shock-absorbing spring is fixedly connected to the inner wall of the equipment box. A second telescopic rod is provided inside the shock-absorbing spring. The two ends of the second telescopic rod are respectively fixedly connected to the second limiting block and the inner wall of the equipment box.
[0014] Preferably, the top of the annular fall arrestor net is fixedly connected to an annular fixing frame, the annular fixing frame has a T-shaped cross-section, and the vertical part of the annular fixing frame is inserted into the second groove.
[0015] Preferably, a T-shaped fixing block and a first magnet block are fixedly connected to the top of the annular fixing frame.
[0016] Preferably, the bottom end of the support plate has a T-shaped positioning groove corresponding to the position of the fixing block, and a second magnet block is fixedly connected to the bottom end of the support plate.
[0017] The advantages of this utility model compared with the prior art are as follows:
[0018] A fall protection device is installed on the support base. The ring-shaped fall protection net within this device reduces the risk of needles and vials falling out. Furthermore, the ring-shaped fall protection net, with its mesh structure, is lightweight and thin, minimizing its impact on detection accuracy. Additionally, the ring-shaped fixing frame is magnetically secured by a first and second magnet, achieving stable fixation and quick assembly / disassembly. This design not only ensures the reliability of the fall protection device but also significantly improves the efficiency of the equipment, allowing for rapid assembly / disassembly when changing vials or syringes, thereby enhancing the speed and smoothness of subsequent testing. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a three-dimensional representation of the present invention. Figure 1.
[0021] Figure 2 This is a three-dimensional representation of the present invention. Figure 2 .
[0022] Figure 3 This is a structural diagram of the present invention.
[0023] Figure 4 This is an enlarged view of the present invention at point A.
[0024] Figure 5 This is an enlarged view of the present invention at point B.
[0025] Figure 6 This is a perspective view of the limiting structure in this utility model.
[0026] Figure 7 This is a diagram showing the state of this utility model in use.
[0027] As shown in the figure:
[0028] 1. Positioning frame; 101. Handle; 102. First telescopic rod; 103. Support plate;
[0029] 2. Support base; 3. First groove; 4. Second groove; 5. Clamping block; 6. Annular anti-fall net; 7. Equipment box; 8. First limiting block; 9. Second limiting block; 10. Elastic reset unit; 11. Shock-absorbing spring; 12. Second telescopic rod; 13. Annular fixing frame; 14. Fixing block; 15. First magnet block; 16. Positioning groove; 17. Second magnet block. Detailed Implementation
[0030] The following will refer to the appendix in the embodiments of this utility model. Figure 1 To the attached Figure 7 As shown, the technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0031] Example 1:
[0032] Please pay close attention. Figures 1 to 5 As shown, this utility model provides a positioning guide frame for precise concentration measurement of a medical radioactivity meter, including a positioning frame 1, a support base 2, a limiting structure, and an anti-fall device.
[0033] The positioning frame 1 includes a handle 101, with a first telescopic rod 102 fixedly connected to the bottom center of the handle 101. The first telescopic rod 102 has a self-locking function and is a CT Shida quick-lock telescopic rod. A support plate 103 is fixedly connected to the lower part of the outer wall of the first telescopic rod 102, and a through hole is opened in the center of the top of the support plate 103. At the same time, a support base 2 is also fixedly connected to the lower part of the outer wall of the first telescopic rod 102, and the support base 2 is located below the support plate 103.
[0034] In addition, a first groove 3 is formed in the middle of the top of the support base 2, and a second annular groove 4 is formed at the outer edge of the top of the support base 2; thus, the limiting structure is set in the first groove 3, and the anti-fall device is set in the second groove 4.
[0035] Therefore, in the specific implementation process of this embodiment:
[0036] When positioning the syringe is required, insert the syringe directly into the through hole in the middle of the support plate 103, with the syringe handle resting against the top of the support plate 103. Simultaneously, activate the anti-drop device to prevent the syringe needle from falling out. Then, place the entire device and syringe inside the activity meter.
[0037] When it is necessary to position the medicine bottle, place the medicine bottle into the limiting structure so that the limiting structure can position the medicine bottle, and then activate the anti-fall device to prevent the medicine bottle from falling during the movement.
[0038] Example 2:
[0039] To further clarify and fully explain the structure and operating principle of the limiting structure in Embodiment 1, this utility model also provides Embodiment 2, which you should carefully review. Figure 3 and Figure 6 As shown, in this second embodiment, the anti-fall device includes an equipment box 7 fixedly connected to the bottom wall of the first groove 3. A pair of clamping blocks 5 are provided inside the equipment box 7. A semi-circular limiting groove is opened in the middle of the side of the pair of clamping blocks 5, so that the clamping blocks 5 fit more closely with the outer wall of the medicine bottle.
[0040] The two clamping blocks 5 are named the first limiting block 8 and the second limiting block 9, respectively. They are arranged one in front of the other. The first limiting block 8 is fixedly connected to the rear part of the bottom wall of the device box 7, and the second limiting block 9 is slidably connected to the front part of the bottom wall of the device box 7.
[0041] Next, at least three sets of elastic reset units 10 are connected to the side of the second limiting block 9 away from the first limiting block 8, that is, the front end of the second limiting block 9, which can apply elastic force to the second limiting block 9, thereby making the medicine bottle more stable.
[0042] Specifically, each set of elastic reset units 10 includes a shock-absorbing spring 11 and a second telescopic rod 12. The rear end of the shock-absorbing spring 11 is fixedly connected to the front end of the second limiting block 9, and the front end of the shock-absorbing spring 11 is fixedly connected to the front wall of the equipment box 7. The second telescopic rod 12 is located inside the shock-absorbing spring 11, and the front and rear ends of the second telescopic rod 12 are fixedly connected to the front end of the second limiting block 9 and the front wall of the equipment box 7, respectively.
[0043] It should be noted that, in order to make the first limiting block 8 and the second limiting block 9 hold the medicine bottle more stably, anti-slip textures are fixedly connected to the inner walls of the limiting grooves of the first limiting block 8 and the second limiting block 9 to increase friction. In addition, in order to make the medicine bottle easier to place between the first limiting block 8 and the second limiting block 9, rounded corners are beveled on the side of the top of the first limiting block 8 and the second limiting block 9 that are close to each other.
[0044] Therefore, in the specific implementation of this second embodiment, the second limiting block 9 is moved away from the first limiting block 8. When there is enough distance to place the medicine bottle, the medicine bottle is then placed between the first limiting block 8 and the second limiting block 9. Then, the second limiting block 9 is slowly released. During this process, the release force of the shock-absorbing springs 11 on the three sets of elastic reset units 10 pushes the second limiting block 9 back to its original position. When the limiting groove on the second limiting block 9 abuts against the medicine bottle, the force on the shock-absorbing springs 11 will press the second limiting block 9 tightly against the medicine bottle. By clamping the medicine bottle with the first limiting block 8 and the second limiting block 9, the medicine bottle is made more stable during the testing process.
[0045] Example 3:
[0046] In order to further clarify and fully explain the structure and operating principle of the fall protection device in the above embodiment one, this utility model also provides embodiment three, in which the limiting structure includes an annular fall protection net 6. The annular fall protection net 6 adopts a thin and small mesh structure. The bottom end of the annular fall protection net 6 is fixedly connected to the bottom wall of the second groove 4, and the rest of the annular fall protection net 6 is stacked in the second groove 4.
[0047] Next, a ring-shaped fixing frame 13 is glued to the top of the ring-shaped fall arrestor net 6. It should be noted that the ring-shaped fixing frame 13 has a T-shaped cross-section, and its vertical portion is inserted into the second groove 4. Thus, when the ring-shaped fixing frame 13 moves towards the side closer to the support plate 103, it can unfold the ring-shaped fall arrestor net 6. The unfolded ring-shaped fall arrestor net 6 can then enclose the area between the support plate 103 and the support base 2, preventing medicine bottles or needles from falling into the activity meter.
[0048] Then, a T-shaped fixing block 14 is fixedly connected to the front of the top of the annular fixing frame 13, and a positioning groove 16 is opened at the front of the bottom of the support plate 103. The shape of the positioning groove 16 is in clearance fit with the fixing block 14, with a gap of 1 mm between them. In this way, the fixing block 14 can be inserted into the positioning groove 16, so that the position of the annular fixing frame 13 is fixed.
[0049] Meanwhile, since the fixing block 14 is only inserted into the positioning groove 16, the side of the annular fixing frame 13 away from the fixing block 14 may fall downward. To reduce this, a first magnet block 15 is fixedly connected to the rear side of the top of the annular fixing frame 13, and a second magnet block 17 is fixedly connected to the rear part of the bottom of the support plate 103. The first magnet block 15 and the second magnet block 17 are magnetically attracted to each other.
[0050] Therefore, in actual use, after positioning the medicine bottle or syringe, the vertical part of the annular fixing bracket 13 is moved out of the second groove 4, and the annular fixing bracket 13 is moved upward. During this process, the annular fixing bracket 13 slowly drives the annular fall protection net 6 to unfold.
[0051] Next, the fixing block 14 is inserted into the positioning groove 16. When the fixing block 14 is fully inserted into the positioning groove 16, the first magnet block 15 and the second magnet block 17 are magnetically attracted to each other. At this time, the annular fixing frame 13 is fixed and kept horizontal. The unfolded annular anti-fall net 6 effectively blocks the area between the support plate 103 and the support base 2, preventing the medicine bottle or needle from falling into the activity meter.
[0052] In summary, the medical radioactivity meter positioning guide frame for precise concentration measurement provided by this utility model has at least the following advantages:
[0053] 1. A limiting structure is set up. The two clamping blocks 5 of the limiting structure can limit and fix medicine bottles of different sizes, thus expanding the applicability of the equipment.
[0054] 2. A fall protection device is installed. When the medicine bottle or needle falls, it will be blocked by the ring-shaped fall protection net 6 to prevent it from falling into the activity meter.
[0055] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
[0056] The detailed description of known functions and components is omitted in this disclosure. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of commercially available instruments.
Claims
1. A medical radioactivity meter accurate measurement concentration positioning guide frame, characterized in that, include: Positioning frame (1), the positioning frame (1) includes a handle (101) and a first telescopic rod (102) connected to the handle (101), and a support plate (103) with through holes is fixedly connected to the outer wall of the first telescopic rod (102); The support base (2) is fixedly connected to the outer wall of the first telescopic rod (102), and the top of the support base (2) is respectively provided with a first groove (3) and a second groove (4); The limiting structure is set in the first groove (3) and includes a pair of clamping blocks (5) with semi-circular limiting grooves. The pair of clamping blocks (5) are displaced to the adjacent side to clamp and limit medicine bottles of different sizes. The fall arrest device includes an annular fall arrest net (6) disposed in the second groove (4).
2. The precise measurement concentration positioning guide frame of a medical radioactivity meter according to claim 1, characterized in that: The limiting structure also includes a device box (7) fixedly connected in the first groove (3). The two clamping blocks (5) are named the first limiting block (8) and the second limiting block (9), respectively. The first limiting block (8) is fixedly connected to the inner wall of the device box (7), and the second limiting block (9) is movably connected to the inner wall of the device box (7).
3. The precise measurement concentration positioning guide frame of a medical radioactivity meter according to claim 2, characterized in that: At least three sets of elastic reset units (10) are connected to the side of the second limiting block (9) away from the first limiting block (8); The elastic reset unit (10) includes a shock-absorbing spring (11) fixedly connected to the second limiting block (9). The other end of the shock-absorbing spring (11) is fixedly connected to the inner wall of the equipment box (7). A second telescopic rod (12) is provided inside the shock-absorbing spring (11). The two ends of the second telescopic rod (12) are fixedly connected to the second limiting block (9) and the inner wall of the equipment box (7), respectively.
4. The precise measurement concentration positioning guide frame of a medical radioactivity meter according to claim 1, characterized in that: The top of the ring-shaped fall arrest net (6) is fixedly connected to a ring-shaped fixing frame (13). The ring-shaped fixing frame (13) has a T-shaped cross section, and the vertical part of the ring-shaped fixing frame (13) is inserted into the second groove (4).
5. The precise measurement concentration positioning guide frame of a medical radioactivity meter according to claim 4, characterized in that: The top of the annular fixing frame (13) is fixedly connected to a T-shaped fixing block (14) and a first magnet block (15).
6. A precision measurement concentration positioning guide frame for a medical radioactivity meter according to claim 5, characterized in that: The bottom end of the support plate (103) has a T-shaped positioning groove (16) corresponding to the position of the fixing block (14), and the bottom end of the support plate (103) is fixedly connected to a second magnet block (17).