Injection device for magnetic resonance high-pressure radiography
By introducing the lever and limiting ring structure into the injection device for magnetic resonance high-pressure contrast, the problem of injecting devices that cannot be accurately injected and piston fall off is solved, and the dose prompt and safe fixation are achieved, which improves the accuracy and safety of injection.
Patent Information
- Application Number
- CN202421599546.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The existing injection devices for magnetic resonance high-pressure contrast imaging cannot accurately inject the specified amount of drugs, and the piston may fall off, which poses a safety hazard.
An injection device is designed, including a syringe barrel, piston rod, lever, torsion spring, limit ring and fixing assembly. The lever is pushed through the lever to make a sound to indicate the dose, and the piston rod is fixed through the limit ring to prevent falling off.
It realizes the prompts for accurate injection of drug doses and prevents the piston rod from falling off, improving the safety and accuracy of the injection process.
Smart Images
Figure CN223127000U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to an injection device for magnetic resonance high-pressure contrast agents. Background Art
[0002] The technical field of medical devices is a field that is constantly developing and innovating. New materials, new technologies, and new treatment methods are emerging continuously, driving the improvement of the performance and effectiveness of medical devices. An injection device for magnetic resonance high-pressure contrast agents is a device used to inject contrast agents into patients during magnetic resonance examinations. These devices play a key role in medical device technology, especially when clearer images and detailed observations of blood vessels and tissues are required.
[0003] The existing injection devices for magnetic resonance high-pressure contrast agents are divided into manual injection and automatic injection. Most hospitals use manual injection with syringes, which cannot accurately inject a specified amount of medicine, resulting in waste of medicine and even harm to the health of patients. Moreover, the piston of an ordinary syringe has a risk of falling off during sliding. For this reason, an injection device for magnetic resonance high-pressure contrast agents is proposed to solve the above problems. Summary of the Utility Model
[0004] To make up for the above deficiencies, the utility model provides an injection device for magnetic resonance high-pressure contrast agents, aiming to improve the problems that manual injection cannot accurately quantify the injected medicine and the piston of the syringe may fall off.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme: An injection device for magnetic resonance high-pressure contrast agents, including an injection cylinder, the bottom of the injection cylinder is fixedly connected with an injection port, a piston rod is arranged inside the injection cylinder, a plurality of shift rods are fixedly connected to the outer side of the piston rod, the top of the injection cylinder is fixedly connected with a guard plate, the top of the guard plate is fixedly connected with a protective cover, the top of the guard plate is fixedly connected with a bracket, a lever is rotatably connected to the inner side of the bracket, two torsion springs are arranged between the lever and the bracket, a metal sheet is arranged below the left end of the lever, a limiting ring is arranged on the inner wall of the injection cylinder, two fixed boxes are fixedly connected to the outer wall of the injection cylinder, and a fixing component is arranged inside the fixed box, and the fixing component is used for fixing and disassembling the limiting ring.
[0006] As a further description of the above technical solution:
[0007] The fixing component includes a cylinder, the cylinder is slidably connected inside the fixed box, a fixing plate is fixedly connected to the outside of the cylinder, and a spring is sleeved on the outside of the cylinder.
[0008] As a further description of the above technical solution:
[0009] A gasket is fixedly connected to the bottom of the metal sheet, and the bottom of the gasket is fixedly connected to the top of the guard plate.
[0010] As a further description of the above technical solution:
[0011] The top of the piston rod is fixedly connected with a handle.
[0012] As a further description of the above technical solution:
[0013] One end of the torsion spring is fixedly connected to the outer wall of the lever, and the other end of the torsion spring is fixedly connected to the inner wall of the bracket.
[0014] As a further description of the above technical solution:
[0015] One end of the cylinder away from the fixing plate is fixedly connected with a handle, and the outer side of the fixing plate is slidably connected to the inside of the fixing box.
[0016] As a further description of the above technical solution:
[0017] One end of the spring is fixedly connected to the inner bottom wall of the fixing box, and the other end of the spring is fixedly connected to the front end of the fixing plate.
[0018] As a further description of the above technical solution:
[0019] The outer side of the cylinder passes through the fixed box and the inside of the injection cylinder, and the outer side of the cylinder is inserted into the inside of the limiting ring.
[0020] The utility model has the following beneficial effects:
[0021] 1. In the utility model, as the lever on the piston rod moves downward, it pushes the lever. Because the lever is connected to a torsion spring on the outside, when one end of the lever is tilted to the maximum height and the lever moves below the lever, the torsion spring will quickly reset the lever, and the lever will quickly knock on the metal sheet below it to make a sound, thereby achieving the purpose of reminding medical staff of the injection dosage during the injection process.
[0022] 2. In the utility model, the limit ring needs to be installed and disassembled before and after injection. Before injection, the limit ring is first fixed to the inner wall of the syringe barrel, and then the cylinder is inserted into the syringe barrel and plugged into the limit ring to fix the limit ring. After the injection is completed, the handle and the cylinder can be pulled outwards, and the limit ring can be removed, which solves the problem that the piston and the piston rod may fall off and affect the injection during the injection process. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a three-dimensional schematic diagram of an injection device for magnetic resonance high-pressure angiography proposed by the utility model;
[0024] Figure 2 Schematic structural diagram of a lever of an injection device for magnetic resonance high-pressure contrast agent proposed by the present utility model;
[0025] Figure 3 Schematic structural diagram of a limit ring of an injection device for magnetic resonance high-pressure contrast agent proposed by the present utility model.
[0026] Legend:
[0027] 1. Syringe barrel; 2. Injection port; 3. Guard plate; 4. Piston rod; 5. Handle; 6. Fixed box; 7. Pull handle; 8. Protective cover; 9. Lever; 10. Poking rod; 11. Bracket; 12. Gasket; 13. Metal sheet; 14. Torsion spring; 15. Cylinder; 16. Spring; 17. Fixed plate; 18. Limit ring. Specific embodiments
[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0029] Refer to Figures 1 - 3 , an embodiment provided by the present utility model: An injection device for magnetic resonance high-pressure contrast agent, including a syringe barrel 1, an injection port 2 is fixedly connected to the bottom of the syringe barrel 1, a piston rod 4 is arranged inside the syringe barrel 1, a plurality of poking rods 10 are fixedly connected to the outer side of the piston rod 4, a guard plate 3 is fixedly connected to the top of the syringe barrel 1, a protective cover 8 is fixedly connected to the top of the guard plate 3, a bracket 11 is fixedly connected to the top of the guard plate 3, a lever 9 is rotatably connected to the inner side of the bracket 11, two torsion springs 14 are arranged between the lever 9 and the bracket 11, a metal sheet 13 is arranged below the left end of the lever 9, a limit ring 18 is arranged on the inner wall of the syringe barrel 1, two fixed boxes 6 are fixedly connected to the outer wall of the syringe barrel 1, a fixing component is arranged inside the fixed box 6, and the fixing component is used for fixing and disassembling the limit ring 18. A gasket 12 is fixedly connected to the bottom of the metal sheet 13, and the bottom of the gasket 12 is fixedly connected to the top of the guard plate 3. A handle 5 is fixedly connected to the top of the piston rod 4, one end of the torsion spring 14 is fixedly connected to the outer wall of the lever 9, and the other end of the torsion spring 14 is fixedly connected to the inner wall of the bracket 11.
[0030] Specifically, when using the syringe, push the handle 5 and the piston rod 4 inward. The piston at the bottom of the piston rod 4 will inject the liquid medicine inside the syringe barrel 1 through the injection port 2 by pressure. There are three lever rods 10 on the outer side of the piston rod 4. When the first lever rod 10 toggles the lever 9, since a torsion spring 14 is arranged on the outer side of the lever 9, after the lever rod 10 moves to the lower side of the lever 9, the force of the torsion spring 14 will quickly reset the lever 9 and make the upturned end of the lever 9 knock downward on the metal sheet 13 below it, making a sound to remind the medical staff of the dosage of the injected medicine.
[0031] Refer to Figures 1 - 3 , the fixing assembly includes a cylinder 15. The cylinder 15 is slidably connected inside the fixing box 6. A fixing plate 17 is fixedly connected to the outside of the cylinder 15. A spring 16 is sleeved on the outer side of the cylinder 15. One end of the cylinder 15 away from the fixing plate 17 is fixedly connected to a pull handle 7. The outside of the fixing plate 17 is slidably connected inside the fixing box 6. One end of the spring 16 is fixedly connected to the inner bottom wall of the fixing box 6, and the other end of the spring 16 is fixedly connected to the front end of the fixing plate 17. The outside of the cylinder 15 penetrates through the fixing box 6 and the inside of the syringe barrel 1, and the outside of the cylinder 15 is inserted inside the limit ring 18.
[0032] Specifically, before injection, first install the limit ring 18 on the inner wall of the syringe barrel 1, pull the pull handle 7 outward, and pull the cylinder 15 outward. At the same time, the fixing plate 17 on the outside of the cylinder 15 will compress the spring 16 inward. Release the pull handle 7, and under the elastic force of the spring 16, insert the cylinder 15 into the inside of the syringe barrel 1 and the inside of the limit ring 18 to complete the fixation of the limit ring 18. When the injection is completed, pull the pull handle 7 outward to remove the limit ring 18.
[0033] Working principle: the dosage of injection medicine is divided into three levels. First, the syringe 1 is filled with medicine. Push the handle 5, and the piston rod 4 slowly moves into the syringe 1. The piston at the bottom of the piston rod 4 uses pressure to inject the medicine through the injection port 2. As the piston rod 4 moves, the three levers 10 on its outside also move accordingly. When the first lever 10 pushes the lever 9 downward, the end of the lever 9 close to the piston rod 4 moves downward, and the other end will tilt upward. Because the two sides of the lever 9 are connected with the torsion spring 14, the force of the torsion spring 14 will restore the lever 9 to its original state. Therefore, when the first lever 10 moves to the bottom of the lever 9, the lever 9 will quickly return to its original state, and because of the elastic force of the torsion spring 14, the outer end of the lever 9 will knock on the metal sheet 13 on the top of the gasket 12, and a sound will be issued to remind the medical staff that the injection dose is the first gear. Continue to push the piston rod 4 downward, the lever 10 will move the lever 9 twice, and the metal sheet 13 will also make two sounds. Before using the syringe, the limiting ring 18 must be placed close to the inner wall of the syringe barrel 1. Then the fixing plate 17 will use the force of the spring 16 to drive the cylinder 15 inward until the cylinder 15 is inserted into the limiting ring 18, and the limiting ring 18 is fixed to the inner wall of the syringe barrel 1. After the injection is completed, you only need to pull the handle 7 outward to disassemble the cylinder 15 and remove the limiting ring 18.
[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An injection device for magnetic resonance high-pressure contrast imaging, comprising an injection cylinder (1), characterized in that: The bottom of the syringe barrel (1) is fixedly connected with an injection port (2). A piston rod (4) is arranged inside the syringe barrel (1). A plurality of toggle levers (10) are fixedly connected to the outer side of the piston rod (4). The top of the syringe barrel (1) is fixedly connected with a guard plate (3). The top of the guard plate (3) is fixedly connected with a protective cover (8). The top of the guard plate (3) is fixedly connected with a bracket (11). A lever (9) is rotatably connected to the inner side of the bracket (11). Two torsion springs (14) are arranged between the lever (9) and the bracket (11). A metal sheet (13) is arranged below the left end of the lever (9). A limiting ring (18) is arranged on the inner wall of the syringe barrel (1). Two fixed boxes (6) are fixedly connected to the outer wall of the syringe barrel (1). A fixing component is arranged inside the fixed box (6), and the fixing component is used for fixing and disassembling the limiting ring (18).
2. The injection device for magnetic resonance high-pressure contrast according to claim 1, characterized in that: The fixing component includes a cylinder (15). The cylinder (15) is slidably connected inside the fixed box (6). A fixing plate (17) is fixedly connected to the outside of the cylinder (15). A spring (16) is sleeved on the outside of the cylinder (15).
3. The injection device for magnetic resonance high-pressure contrast according to claim 1, wherein: A gasket (12) is fixedly connected to the bottom of the metal sheet (13). The bottom of the gasket (12) is fixedly connected to the top of the guard plate (3).
4. The injection device for magnetic resonance high-pressure contrast according to claim 1, wherein: A handle (5) is fixedly connected to the top of the piston rod (4).
5. The injection device for magnetic resonance high-pressure contrast agent according to claim 1, wherein: One end of the torsion spring (14) is fixedly connected to the outer wall of the lever (9), and the other end of the torsion spring (14) is fixedly connected to the inner wall of the bracket (11).
6. The injection device for magnetic resonance high-pressure contrast according to claim 2, wherein: A pull handle (7) is fixedly connected to the end of the cylinder (15) away from the fixing plate (17). The outside of the fixing plate (17) is slidably connected inside the fixed box (6).
7. The injection device for magnetic resonance high-pressure contrast according to claim 2, wherein: One end of the spring (16) is fixedly connected to the inner bottom wall of the fixed box (6), and the other end of the spring (16) is fixedly connected to the front end of the fixing plate (17).
8. The injection device for magnetic resonance high-pressure contrast according to claim 2, wherein: The outside of the cylinder (15) penetrates through the fixed box (6) and the inside of the syringe barrel (1), and the outside of the cylinder (15) is inserted into the inside of the limiting ring (18).