DSA high-pressure radiography injection equipment capable of adjusting flow speed

Abstract

The utility model relates to the technical field of medical apparatus and instruments, and discloses a DSA high-pressure radiography injection device capable of adjusting flow velocity, which comprises a high-pressure needle cylinder, a push rod is slidably connected in the high-pressure needle cylinder, a fixing plug is fixedly connected in the high-pressure needle cylinder, an installation sleeve is fixedly connected on the outer wall of the high-pressure needle cylinder, and the high-pressure needle cylinder is fixedly connected with the installation sleeve. A protective sleeve is fixedly connected to the interior of the mounting sleeve, a rotating rod is rotatably connected to the interior of the protective sleeve, a main bevel gear is fixedly connected to one end of the rotating rod, a first rotary knob is fixedly connected to the other end of the rotating rod, and a first threaded rod is rotatably connected to the interior of the protective sleeve. According to the high-pressure radiography injection device, the first rotary knob is rotated, the main bevel gear drives the first threaded rod and the auxiliary bevel gear to rotate, then the clamping plug is driven to move up and down, the problem that most of existing high-pressure radiography injection devices cannot regulate and control the internal flow speed of the high-pressure needle cylinder is solved, the adjustability of the devices is improved, and the devices are convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a DSA high-pressure contrast injection device with adjustable flow rate. Background Art

[0002] High-pressure contrast agent injectors are mainly used for contrast agent injection during angiography and can also be used for contrast agent injection during CT angiography. The function of a high-pressure injector is to ensure that a sufficient amount of high-concentration X-ray contrast agent is quickly injected into the examination site within a certain period of time. It is mostly composed of an injection syringe and an injection head, a driving and control system, a supporting and fixing part, and accessories. It can be fixed on a wall, ceiling, treatment table, cart, and mobile rack.

[0003] During the high-pressure enhanced CT angiography process, the existing DSA high-pressure contrast injection equipment generally sucks the contrast agent into the high-pressure syringe syringe through a straw, and then connects the contrast catheter. When the contrast agent in the high-pressure syringe syringe is used up, the contrast catheter needs to be removed and the contrast agent is sucked in with a straw to complete the angiography process.

[0004] However, in the existing DSA high-pressure contrast injection equipment, the flow rate of the contrast agent output inside the high-pressure syringe cannot be accurately adjusted, which may easily cause the contrast agent to flow too fast or too slow when flowing to the contrast catheter, thereby resulting in unsatisfactory contrast effect. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a DSA high-pressure contrast injection device with adjustable flow rate, aiming to improve the problem that most of the existing high-pressure contrast injection devices cannot regulate the internal flow rate of the high-pressure syringe.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a DSA high-pressure angiography injection device with adjustable flow rate, comprising a high-pressure syringe, a push rod is slidably connected inside the high-pressure syringe, a fixing plug is fixedly connected inside the high-pressure syringe, a mounting sleeve is fixedly connected to the outer wall of the high-pressure syringe, a protective sleeve is fixedly connected inside the mounting sleeve, a rotating rod is rotatably connected inside the protective sleeve, one end of the rotating rod is fixedly connected to a main bevel gear, the other end of the rotating rod is fixedly connected to a first knob, a first threaded rod is rotatably connected inside the protective sleeve, the outer wall of the first threaded rod is fixedly connected to a secondary bevel gear, the main bevel gear is meshed with the secondary bevel gear, the outer wall of the first threaded rod is threadedly connected to a plug, the outer wall of the plug is fixedly connected to a limiting block, the outer wall of the limiting block is slidably connected to the inside of the fixing plug, and the outer wall of the mounting sleeve is fixedly connected to a connecting component.

[0007] Furthermore, the connecting assembly comprises an extension tube, one end of which is fixedly connected to the outer wall of the mounting sleeve, and the other end of which is fixedly connected to a contrast catheter.

[0008] Furthermore, a one-way valve is fixedly connected to the outer wall of the extension tube, and a fixed tube is fixedly connected to the outer wall of the one-way valve.

[0009] Furthermore, a contrast agent container is slidably connected to the outer wall of the fixing tube, and a bilaterally symmetrical fixing ring is slidably connected to the outer wall of the fixing tube.

[0010] Furthermore, the outer wall of the fixing ring is rotatably connected to a connecting seat.

[0011] Furthermore, the internal thread of the fixing ring is connected to a second threaded rod, one end of the second threaded rod is fixedly connected to a second knob, and the other end of the second threaded rod is rotatably connected to a cushion.

[0012] Furthermore, the outer wall of the cushion is in contact with the outer wall of the contrast agent container.

[0013] Furthermore, a mounting plate is fixedly connected to the outer wall of the fixing ring, and a fixing bolt is threadedly connected to the inner wall of the fixing ring.

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

[0015] 1. In the utility model, firstly, by rotating the first knob, the main bevel gear drives the first threaded rod and the auxiliary bevel gear to rotate, and then drives the plug to move up and down, so as to achieve the effect of accurately adjusting the contrast agent flow rate inside the high-pressure syringe, which solves the problem that most of the existing high-pressure contrast injection devices cannot adjust the internal flow rate of the high-pressure syringe, improves the adjustability of the device, and facilitates the use of the device.

[0016] 2. In the utility model, the second threaded rod is driven to push the cushion by rotating the second knob until the cushion is clamped on the surface of the contrast agent container, thereby achieving the effect of firmly fixing the contrast agent container, solving the problem that the existing high-pressure contrast injection equipment cannot stably connect the contrast agent container with only one connector, improving the stability of the equipment and ensuring the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a DSA high-pressure contrast injection device with adjustable flow rate proposed by the utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of a high-pressure syringe of a DSA high-pressure contrast injection device with adjustable flow rate 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 provides a schematic diagram of the structure of the cushion part of a DSA high-pressure contrast injection device with adjustable flow rate.

[0021] Legend:

[0022] 1. High-pressure syringe; 2. Push rod; 3. Fixed plug; 4. Mounting sleeve; 5. Protective sleeve; 6. First threaded rod; 7. Rotating rod; 8. Main bevel gear; 9. First knob; 10. Secondary bevel gear; 11. Plug; 12. Limit block; 13. Extension tube; 14. Angiographic catheter; 15. One-way valve; 16. Fixed tube; 17. Contrast agent container; 18. Fixed ring; 19. Connecting seat; 20. Second threaded rod; 21. Second knob; 22. Cushion; 23. Mounting plate; 24. Fixing bolt. 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 DSA high-pressure contrast injection device with adjustable flow rate, comprising a high-pressure syringe 1, a push rod 2 is slidably connected inside the high-pressure syringe 1, a fixed plug 3 is fixedly connected inside the high-pressure syringe 1, a mounting sleeve 4 is fixedly connected to the outer wall of the high-pressure syringe 1, a protective sleeve 5 is fixedly connected inside the mounting sleeve 4, a rotating rod 7 is rotatably connected inside the protective sleeve 5, one end of the rotating rod 7 is fixedly connected to a main bevel gear 8, and the other end of the rotating rod 7 is fixedly connected to a first knob 9, a first threaded rod 6 is rotatably connected inside the protective sleeve 5, an outer wall of the first threaded rod 6 is fixedly connected to a secondary bevel gear 10, the main bevel gear 8 is meshed with the secondary bevel gear 10, a plug 11 is threadedly connected to the outer wall of the first threaded rod 6, a limit block 12 is fixedly connected to the outer wall of the limit block 12, the outer wall of the limit block 12 is slidably connected to the inside of the fixed plug 3, and a connecting component is fixedly connected to the outer wall of the mounting sleeve 4;

[0025] Specifically, when the flow rate inside the high-pressure syringe 1 needs to be adjusted, first, the first knob 9 is turned to drive the rotating rod 7 and the main bevel gear 8 to rotate. Since the main bevel gear 8 and the secondary bevel gear 10 are meshed with each other, the secondary bevel gear 10 can rotate with the main bevel gear 8. Such a rotational action drives the first threaded rod 6 to rotate inside the protective sleeve 5. The movement of the first threaded rod 6 causes the plug 11 to slide inside the fixed plug 3. At the same time, the limit block 12 limits the position of the plug 11 to ensure its movement within a certain range. By adjusting the gap between the plug 11 and the fixed plug 3, the flow rate of the contrast agent inside the high-pressure syringe 1 can be accurately adjusted. This improves the adjustability of the device, allowing the operator to accurately adjust the flow rate as needed, thereby improving the convenience and flexibility of the device. At the same time, the flow rate inside the high-pressure syringe 1 can be adjusted according to the specific situation to ensure that the flow rate is accurately controllable when performing angiography on the patient, thereby improving the efficiency and safety of the medical device.

[0026] Reference Figure 1 and Figure 4 The connecting assembly includes an extension tube 13, one end of which is fixedly connected to the outer wall of the mounting sleeve 4, and the other end of the extension tube 13 is fixedly connected to a contrast catheter 14; the outer wall of the extension tube 13 is fixedly connected to a one-way valve 15, and the outer wall of the one-way valve 15 is fixedly connected to a fixed tube 16; the outer wall of the fixed tube 16 is slidably connected to a contrast medium container 17, and the outer wall of the fixed tube 16 is slidably connected to a left-right symmetrical fixing ring 18; the outer wall of the fixing ring 18 is rotatably connected to a connecting seat 19; the inner thread of the fixing ring 18 is connected to a second threaded rod 20, one end of the second threaded rod 20 is fixedly connected to a second knob 21, and the other end of the second threaded rod 20 is rotatably connected to a cushion 22; the outer wall of the cushion 22 fits the outer wall of the contrast medium container 17; the outer wall of the fixing ring 18 is fixedly connected to a mounting plate 23, and the inner thread of the mounting plate 23 is connected to a fixing bolt 24;

[0027] Specifically, first, the fixing tube 16 is inserted into the interior of the contrast agent container 17. The mounting plate 23 is fixed by fixing bolts 24, which ensures that the container will not fall off or move easily when subjected to external force. In order to further increase the stability of the fixation, the fixing ring 18 can be easily sleeved on the outer wall of the contrast agent container 17. This makes the fixing process simpler and more efficient. By turning the second knob 21, the second threaded rod 20 can be driven to rotate inside the fixing ring 18. This allows the fixing ring 18 to push the cushion 22 to move inward until the cushion 22 completely clamps the contrast agent container 17. This not only ensures the stable fixation of the container, but also avoids any damage or scratches that may occur during the fixing process.

[0028] Working principle: when the flow rate inside the high-pressure syringe 1 needs to be adjusted, the first knob 9 is turned to drive the rotating rod 7 and the main bevel gear 8 to rotate. Since the main bevel gear 8 and the auxiliary bevel gear 10 are meshed with each other, the auxiliary bevel gear 10 can rotate with the main bevel gear 8, thereby driving the first threaded rod 6 to rotate inside the protective sleeve 5, thereby driving the plug 11 to slide inside the fixed plug 3, wherein the limit block 12 can limit the position of the plug 11, and by adjusting the gap size between the plug 11 and the fixed plug 3, the effect of accurately adjusting the flow rate of the contrast agent inside the high-pressure syringe 1 is achieved, thereby improving The adjustability of the device facilitates the use of the device. When the contrast agent container 17 needs to be firmly fixed, the fixing tube 16 is inserted into the contrast agent container 17, and the fixing bolt 24 is turned to fix the mounting plate 23, and then the fixing ring 18 is sleeved on the outer wall of the contrast agent container 17. The second threaded rod 20 is driven to rotate inside the fixing ring 18 by turning the second knob 21, so that the fixing ring 18 can push the cushion 22 to move inward until the cushion 22 completely clamps the contrast agent container 17, thereby achieving the effect of firmly fixing the contrast agent container 17, improving the stability of the device, and ensuring the normal operation of the device.

[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 DSA high-pressure contrast injection device with adjustable flow rate, comprising a high-pressure syringe (1), characterized in that: The high-pressure syringe (1) is slidably connected to a push rod (2), the high-pressure syringe (1) is fixedly connected to a fixing plug (3), the outer wall of the high-pressure syringe (1) is fixedly connected to a mounting sleeve (4), the mounting sleeve (4) is fixedly connected to a protective sleeve (5), the protective sleeve (5) is rotatably connected to a rotating rod (7), one end of the rotating rod (7) is fixedly connected to a main bevel gear (8), the other end of the rotating rod (7) is fixedly connected to a first knob (9), the protective sleeve (5) is rotatably connected to a first threaded rod (6), the outer wall of the first threaded rod (6) is fixedly connected to a secondary bevel gear (10), the main bevel gear (8) is meshed with the secondary bevel gear (10), the outer wall of the first threaded rod (6) is threadedly connected to a plug (11), the outer wall of the plug (11) is fixedly connected to a limiting block (12), the outer wall of the limiting block (12) is slidably connected to the inside of the fixing plug (3), and the outer wall of the mounting sleeve (4) is fixedly connected to a connecting assembly.

2. A DSA high-pressure contrast injection device with adjustable flow rate according to claim 1, characterized in that: The connection assembly comprises an extension tube (13), one end of the extension tube (13) being fixedly connected to the outer wall of the mounting sleeve (4), and the other end of the extension tube (13) being fixedly connected to a contrast catheter (14).

3. A DSA high-pressure contrast injection device with adjustable flow rate according to claim 2, characterized in that: A one-way valve (15) is fixedly connected to the outer wall of the extension tube (13), and a fixed tube (16) is fixedly connected to the outer wall of the one-way valve (15).

4. The DSA high-pressure contrast injection device with adjustable flow rate according to claim 3, characterized in that: The outer wall of the fixed tube (16) is slidably connected to a contrast medium container (17), and the outer wall of the fixed tube (16) is slidably connected to a bilaterally symmetrical fixed ring (18).

5. The DSA high-pressure contrast injection device with adjustable flow rate according to claim 4, characterized in that: The outer wall of the fixing ring (18) is rotatably connected to a connecting seat (19).

6. The DSA high-pressure contrast injection device with adjustable flow rate according to claim 5, characterized in that: The internal thread of the fixing ring (18) is connected to a second threaded rod (20); one end of the second threaded rod (20) is fixedly connected to a second knob (21); and the other end of the second threaded rod (20) is rotatably connected to a soft pad (22).

7. The DSA high-pressure contrast injection device with adjustable flow rate according to claim 6, characterized in that: The outer wall of the soft cushion (22) fits the outer wall of the contrast agent container (17).

8. The DSA high-pressure contrast injection device with adjustable flow rate according to claim 7, characterized in that: The outer wall of the fixing ring (18) is fixedly connected to a mounting plate (23), and the inner thread of the mounting plate (23) is connected to a fixing bolt (24).

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