Pipeline type nuclear magnetic resonance high-pressure radiography injector

Abstract

The utility model relates to the technical field of medical instruments, and discloses a pipeline type nuclear magnetic resonance high-pressure radiography injector which comprises an injection needle cylinder, a push plug is slidably connected into the injection needle cylinder, a metering tube is fixedly connected into the injection needle cylinder, a needle tube is fixedly connected to the outer wall of the injection needle cylinder, and a valve is arranged on the needle tube. The outer wall of the needle tube is in threaded connection with a connecting tube, the outer wall of the connecting tube is fixedly connected with a fixing frame, a four-way tube is slidably connected into the fixing frame, a positioning assembly is arranged on the outer wall of the four-way tube, and a sliding rod is slidably connected into the fixing frame. According to the high-pressure radiography injector, the push plate is pushed by the elastic force of the spring so as to drive the sliding rod to be inserted into the four-way pipe, then all medicament bottles can be connected into the four-way pipe, the problem that most of existing high-pressure radiography injectors cannot be directly connected with other medicament bottles is solved, and the convenience of the injectors is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a pipeline type nuclear magnetic resonance high-pressure contrast injection syringe. Background Art

[0002] With the development of medical imaging, magnetic resonance contrast agents are widely used in clinical diagnosis, playing an important role in the diagnosis of diseases and the selection of surgical plans. In the past, contrast agent injection was usually performed by manual intravenous push, which was difficult to achieve the required speed. The application of high-pressure injectors and intelligent technology has greatly improved the injection speed, scanning accuracy and image quality, and can accurately guarantee the volume, flow rate and injection time of contrast agents, thereby significantly improving the quality and diagnostic effect of perfusion imaging and three-dimensional dynamic imaging.

[0003] The existing high-pressure contrast injection device contains a pressure sensor, an infusion system, an injection syringe, etc., which are used to deliver the contrast agent into the patient's body. The injection head is used to connect the patient's body surface and the injection device body to ensure that the contrast agent is accurately injected into the patient's body.

[0004] However, the injection speed of the existing high-pressure contrast agent injector is extremely fast and cannot be adjusted by human intervention. At the same time, the injector cannot be connected to multiple medicine bottles, which requires the needle to be pulled out of the contrast agent bottle and then inserted into the saline bottle to obtain it. This method causes the needle to come into contact with the air more often, which can easily cause infection. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a pipeline-type nuclear magnetic resonance high-pressure contrast injection syringe, aiming to improve the problem that most of the existing high-pressure contrast injection syringes cannot be directly connected to other medicine bottles.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pipeline-type nuclear magnetic resonance high-pressure angiography injector, comprising an injection syringe, a push plug is slidably connected inside the injection syringe, a metering tube is fixedly connected inside the injection syringe, a needle tube is fixedly connected to the outer wall of the injection syringe, a connecting tube is threadedly connected to the outer wall of the needle tube, a fixed frame is fixedly connected to the outer wall of the connecting tube, a four-way tube is slidably connected to the inner part of the fixed frame, a positioning assembly is provided on the outer wall of the four-way tube, a sliding rod is slidably connected to the inner part of the fixed frame, the outer wall of the sliding rod is slidably connected to the inner part of the four-way tube, the outer wall of the sliding rod is fixedly connected to a push plate, the outer wall of the push plate is slidably connected to the inner part of the fixed frame, the outer wall of the sliding rod is sleeved with a spring, and the outer wall of the sliding rod is fixedly connected to a top plate.

[0007] Furthermore, the positioning assembly comprises a positioning block, an outer wall of the positioning block is fixedly connected to an outer wall of the four-way pipe, and an outer wall of the positioning block is slidably connected to the interior of the fixing frame.

[0008] Furthermore, one end of the spring is fixedly connected to the inside of the fixing frame, and the other end of the spring is fixedly connected to the outer wall of the push plate.

[0009] Furthermore, an injection tube is fixedly connected to the interior of the cross-way tube, and an external tube is fixedly connected to the interior of the cross-way tube.

[0010] Furthermore, a contrast agent tube is fixedly connected to the interior of the four-way tube, and a fixing ring is fixedly connected to the outer wall of the contrast agent tube.

[0011] Furthermore, the internal thread of the fixing ring is connected to a threaded rod, and the outer wall of the threaded rod is rotatably connected to the interior of the contrast agent tube.

[0012] Furthermore, a knob is fixedly connected to the top of the outer wall of the threaded rod, and a buffer plate is fixedly connected to the inside of the contrast agent tube.

[0013] Furthermore, the interior of the contrast agent tube is fixedly connected to a limiting ball, the outer wall of the threaded rod is rotatably connected to a baffle, and the outer wall of the baffle is slidably connected to the interior of the limiting ball.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, firstly, the push plate is pushed by the elastic force of the spring, and then the slide rod is driven to be inserted into the interior of the four-way tube, and then each medicine bottle can be connected to the interior of the four-way tube, so as to achieve the effect of directly connecting other medicine tubes, avoiding air pollution when replacing the syringe, solving the problem that most of the existing high-pressure contrast injection syringes cannot be directly connected to other medicine bottles, improving the convenience of the syringe, and facilitating the use of the syringe.

[0016] 2. In the utility model, the baffle is driven to slide inside the limiting ball by turning the knob, thereby changing the gap between the baffle and the limiting ball, thereby achieving the effect of adjusting the flow rate of the contrast agent inside the contrast agent tube, solving the problem that most of the existing high-pressure contrast injectors cannot regulate the flow rate of the internal contrast agent, and improving the practicability of the injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a pipeline-type nuclear magnetic resonance high-pressure contrast injection device proposed by the utility model;

[0018] Figure 2This is a cross-sectional view of the internal structure of a four-way tube of a pipeline-type nuclear magnetic resonance high-pressure contrast injection syringe proposed by the utility model;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 The utility model discloses a cross-sectional view of the internal structure of a contrast medium tube of a pipeline-type nuclear magnetic resonance high-pressure contrast injection syringe.

[0021] Legend:

[0022] 1. Injection syringe; 2. Push plug; 3. Measuring tube; 4. Needle tube; 5. Connecting tube; 6. Fixed frame; 7. Cross-way tube; 8. Positioning block; 9. Sliding rod; 10. Push plate; 11. Spring; 12. Top plate; 13. Injection tube; 14. External tube; 15. Contrast agent tube; 16. Fixed ring; 17. Threaded rod; 18. Knob; 19. Buffer plate; 20. Limit ball; 21. Baffle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 3 , the utility model provides an embodiment: a pipeline type nuclear magnetic resonance high pressure angiography syringe, comprising an injection syringe 1, a push plug 2 is slidably connected inside the injection syringe 1, a metering tube 3 is fixedly connected inside the injection syringe 1, a needle tube 4 is fixedly connected to the outer wall of the injection syringe 1, a connecting tube 5 is threadedly connected to the outer wall of the needle tube 4, a fixing frame 6 is fixedly connected to the outer wall of the connecting tube 5, a four-way tube 7 is slidably connected inside the fixing frame 6, a positioning assembly is arranged on the outer wall of the four-way tube 7, a sliding rod 9 is slidably connected inside the fixing frame 6, an outer wall of the sliding rod 9 is fixedly connected to a push plate 10, an outer wall of the push plate 10 is slidably connected inside the fixing frame 6, a spring 11 is sleeved on the outer wall of the sliding rod 9, and a top plate 12 is fixedly connected to the outer wall of the sliding rod 9; one end of the spring 11 is fixedly connected to the inside of the fixing frame 6, and the other end of the spring 11 is fixedly connected to the outer wall of the push plate 10;

[0025] Specifically, when it is necessary to combine the various medicine tubes, the push plate 10 can be driven to compress the spring 11 by pulling the top plate 12. In this process, the slide bar 9 will slide along the inside of the fixed frame 6. Next, the positioning block 8 on the outer wall of the four-way tube 7 needs to be aligned with the inside of the fixed frame 6 and slide in. This allows the fixed frame 6 to be tightly sleeved on the outer wall of the four-way tube 7, thereby forming a stable connection structure. When the four-way tube 7 is connected to the fixed frame 6, the top plate 12 can be loosened. At this time, the spring 11 will use its elastic force to push the push plate 10, thereby driving the slide bar 9 to slide into the four-way tube 7. In this process, the spring 11 ensures that the slide bar 9 can slide smoothly into the four-way tube 7 and fit closely with it. Thereby, direct connection of multiple medicine tubes can be achieved, thereby improving its convenience of use.

[0026] Reference Figure 1 , Figure 2 and Figure 4 The positioning assembly includes a positioning block 8, the outer wall of the positioning block 8 is fixedly connected to the outer wall of the four-way tube 7, and the outer wall of the positioning block 8 is slidably connected to the inside of the fixed frame 6; the inside of the four-way tube 7 is fixedly connected to the injection tube 13, and the inside of the four-way tube 7 is fixedly connected to the external tube 14; the inside of the four-way tube 7 is fixedly connected to the contrast agent tube 15, and the outer wall of the contrast agent tube 15 is fixedly connected to the fixing ring 16; the inner thread of the fixing ring 16 is connected to the threaded rod 17, and the outer wall of the threaded rod 17 is rotatably connected to the inside of the contrast agent tube 15; the top of the outer wall of the threaded rod 17 is fixedly connected to the knob 18, and the inside of the contrast agent tube 15 is fixedly connected to the buffer plate 19; the inside of the contrast agent tube 15 is fixedly connected to the limiting ball 20, the outer wall of the threaded rod 17 is rotatably connected to the baffle 21, and the outer wall of the baffle 21 is slidably connected to the inside of the limiting ball 20;

[0027] Specifically, when the contrast agent flow rate needs to be adjusted, the threaded rod 17 can be driven to rotate by turning the knob 18. The rotation of the threaded rod 17 will drive the baffle 21 to slide inside the limiting ball 20. In this process, the buffer plate 19 can effectively reduce the impact of the contrast agent on the baffle 21, protect the baffle 21 from damage, and ensure the stability of the contrast agent flow. By adjusting the gap between the baffle 21 and the limiting ball 20, the contrast agent flow rate can be precisely controlled. When the gap is small, the flow rate of the contrast agent will be subject to certain restrictions, thereby slowing down the flow rate; when the gap is large, the flow rate of the contrast agent will increase accordingly. This adjustment method not only enables continuous adjustment of the contrast agent flow rate, but also improves the practicality of the injection.

[0028] Working principle: When it is necessary to combine the various medicine tubes, the push plate 10 is driven by pulling the top plate 12 to compress the spring 11, and at the same time, the slide bar 9 also slides inside the fixed frame 6, and then the positioning block 8 on the outer wall of the four-way tube 7 is aligned with the inside of the fixed frame 6 and slides in, so that the fixed frame 6 can be sleeved on the outer wall of the four-way tube 7, and then the top plate 12 is loosened, so that the spring 11 pushes the push plate 10 by elastic force, and then drives the slide bar 9 to slide into the four-way tube 7, so as to achieve the effect of directly connecting other medicine tubes, which improves the injection The convenience of the injector facilitates the use of the syringe. When it is necessary to adjust the flow rate of the contrast agent inside the contrast agent tube 15, the threaded rod 17 is rotated by turning the knob 18, and then the baffle 21 is driven to slide inside the limiting ball 20, wherein the buffer plate 19 can reduce the impact of the contrast agent on the baffle 21, and the flow rate of the contrast agent is regulated by controlling the gap between the baffle 21 and the limiting ball 20, thereby achieving the effect of adjusting the flow rate of the contrast agent inside the contrast agent tube 15, thereby improving the practicability of the injection.

[0029] 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. A pipeline-type nuclear magnetic resonance high-pressure angiography injector, comprising an injection syringe (1), characterized in that: The injection syringe (1) is slidably connected to a push plug (2), the injection syringe (1) is fixedly connected to a metering tube (3), the outer wall of the injection syringe (1) is fixedly connected to a needle tube (4), the outer wall of the needle tube (4) is threadedly connected to a connecting tube (5), the outer wall of the connecting tube (5) is fixedly connected to a fixing frame (6), the fixing frame (6) is slidably connected to a four-way tube (7), the outer wall of the four-way tube (7) is provided with a positioning assembly, the fixing frame (6) is slidably connected to a slide rod (9), the outer wall of the slide rod (9) is slidably connected to the inside of the four-way tube (7), the outer wall of the slide rod (9) is fixedly connected to a push plate (10), the outer wall of the push plate (10) is slidably connected to the inside of the fixing frame (6), the outer wall of the slide rod (9) is sleeved with a spring (11), and the outer wall of the slide rod (9) is fixedly connected to a top plate (12).

2. The pipeline type nuclear magnetic resonance high pressure contrast injection device according to claim 1, characterized in that: The positioning assembly comprises a positioning block (8), the outer wall of the positioning block (8) being fixedly connected to the outer wall of the four-way pipe (7), and the outer wall of the positioning block (8) being slidably connected to the interior of the fixed frame (6).

3. The pipeline type nuclear magnetic resonance high pressure angiography injector according to claim 1, characterized in that: One end of the spring (11) is fixedly connected to the inside of the fixing frame (6), and the other end of the spring (11) is fixedly connected to the outer wall of the push plate (10).

4. The pipeline type nuclear magnetic resonance high pressure angiography injector according to claim 2, characterized in that: An injection tube (13) is fixedly connected to the interior of the cross-way tube (7), and an external tube (14) is fixedly connected to the interior of the cross-way tube (7).

5. The pipeline type nuclear magnetic resonance high pressure angiography injector according to claim 4, characterized in that: A contrast agent tube (15) is fixedly connected to the interior of the cross-way tube (7), and a fixing ring (16) is fixedly connected to the outer wall of the contrast agent tube (15).

6. The pipeline type nuclear magnetic resonance high pressure contrast injection device according to claim 5, characterized in that: The internal thread of the fixing ring (16) is connected to a threaded rod (17), and the outer wall of the threaded rod (17) is rotatably connected to the interior of the contrast agent tube (15).

7. The pipeline type nuclear magnetic resonance high pressure angiography injector according to claim 6, characterized in that: A knob (18) is fixedly connected to the top of the outer wall of the threaded rod (17), and a buffer plate (19) is fixedly connected to the inside of the contrast agent tube (15).

8. The pipeline type nuclear magnetic resonance high pressure contrast injection device according to claim 7, characterized in that: The interior of the contrast agent tube (15) is fixedly connected to a limiting ball (20), the outer wall of the threaded rod (17) is rotatably connected to a baffle (21), and the outer wall of the baffle (21) is slidably connected to the interior of the limiting ball (20).

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