A cardiovascular angiography injection device

Abstract

This invention discloses a cardiovascular angiography injection device, specifically relating to the field of medical device technology. It includes a tube body with a pushing component. The pushing component includes a central ring located in the middle of the tube body, and a gathering cavity is formed inside the tube body. An extension conical ring is located at the top of the central ring. This invention allows for stable vertical displacement of the vertical tube by rotating handles on both sides of the tube body with both hands, utilizing the meshing transmission of a toothed disc and toothed plates. This is independent of the ring handles, and releasing the handles allows for rapid repositioning of the toothed disc, toothed plates, and vertical tube, avoiding the tedious manual repositioning process. This design significantly improves operational flexibility during injection. Medical personnel can adjust the handle rotation angle at any time according to treatment needs, precisely controlling the vertical tube displacement speed and distance, thereby achieving flexible adjustment of the contrast agent injection speed and effectively reducing hand fatigue during prolonged operation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a cardiovascular angiography injection device. Background Technology

[0002] Cardiovascular angiography involves rapidly injecting a contrast agent into the heart chambers or blood vessels through a cardiac catheter, allowing the heart and blood vessels to be visualized under X-ray irradiation. Simultaneously, methods such as rapid radiography, videography, or videotape recording are used to capture the visualization process of the heart and blood vessels. This technique is particularly important in interventional radiology.

[0003] Among them, patent publication number CN117861016A discloses a clinical cardiovascular angiography injection device, including an injection cylinder, a needle disposed at one end of the injection cylinder, a piston disc that is sealed and slidably disposed inside the injection cylinder, and a connecting rod that is fixedly connected to the piston disc; the clinical cardiovascular angiography injection device also includes: two first ring handles provided on the outer wall of the injection cylinder, the first ring handles being detachably connected to the injection cylinder through an elastic locking mechanism, the two first ring handles being symmetrical about the central axis of the injection cylinder; a second ring handle, disposed at the end of the connecting rod away from the piston disc, and connected to the connecting rod through a deflection locking mechanism, the second ring handle also being equipped with an elastic assist mechanism;

[0004] When this structure is in use, as medical personnel push the piston disc to slide towards the needle within the syringe, the elastic assist mechanism stores elastic potential energy. Consequently, when the medical personnel release the force exerted on the second ring handle by their fingers, the elastic assist mechanism rebounds, causing the piston disc to automatically move away from the needle within the syringe. However, this operation requires the operator to insert their fingers into the first and second ring handles, resulting in limited flexibility during the pushing process and difficulty in accurately controlling the injection action, thus failing to ensure injection accuracy. At the same time, this structure does not easily achieve quantitative fluid delivery, causing many inconveniences in diagnostic and treatment operations and failing to meet the clinical requirements for the accuracy and stability of contrast agent injection. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a cardiovascular angiography injection device, which aims to solve the problems mentioned in the background art.

[0006] The present invention provides the following technical solution: a cardiovascular angiography injection device, comprising a tube body, wherein a pushing component is provided on the tube body;

[0007] The pushing component includes a central ring disposed in the middle of the tube body, a gathering cavity is provided inside the tube body, an extended conical ring is provided at the top of the central ring, a filter membrane for filtration is provided at the top of the extended conical ring, and a baffle for blocking is provided in the middle of the central ring.

[0008] The bottom of the baffle is provided with a sliding post, which passes through the central ring and extends to the bottom of the central ring. An elastic support member that abuts against the bottom of the central ring is sleeved on the outside of the sliding post.

[0009] The top of the tube body is provided with a vertical tube that can move up and down. The bottom of the vertical tube is provided with a discharge hole. Several toothed plates are sleeved on the outside of the vertical tube, and the toothed plates are stacked. Several first springs are provided at the bottom of the vertical tube, and the bottom of each first spring extends to the filter membrane.

[0010] Optionally, in one possible implementation, both the tube body and the gathering cavity are shaped like a frustum, so that the extended conical ring extends to the top of the gathering cavity to seal the liquid. Mounting plates are respectively provided on both sides of the top of the tube body, and a toothed disc is rotatably connected in each of the two mounting plates. A handle is provided on the outer side of each toothed disc. The toothed disc meshes with the toothed plate so that the toothed disc deflects and drives the vertical tube to move up and down. A sliding groove is opened on one side of each of the two handles, and a slider is slidably connected in each sliding groove. A second spring is provided on the slider. One end of the second spring extends to the bottom side of the mounting plate so that when the handle is deflected, the second spring is forced and the toothed disc is reset by the elasticity of the second spring itself.

[0011] Optionally, in one possible implementation, a temporary injection tube is provided at the top of the vertical tube, the temporary injection tube is connected to the vertical tube, and the vertical tube is inserted into the tube body and slidably connected to the tube body. A flow-dividing cone is provided at the bottom of the inner cavity of the tube body. The flow-dividing cone is shaped like a frustum. Several flow-dividing plates are provided on the outer side of the slider, and several flow-dividing holes are distributed between each pair of adjacent flow-dividing plates. The multiple flow-dividing holes are all opened through the flow-dividing cone. A needle extending to the bottom of the inner wall of the flow-dividing cone is provided at the bottom of the tube body. An acrylic transparent plate is embedded in the side of the tube body.

[0012] The technical effects and advantages of this invention are as follows:

[0013] 1. This invention allows for stable vertical displacement of the vertical tube by rotating the handles on both sides of the tube body with both hands, utilizing the meshing transmission of the gear disc and gear plates, without being constrained by the ring handle. Simultaneously, the slider within the handle groove and the second spring form an automatic reset mechanism; releasing the handle drives the gear disc, gear plates, and vertical tube to quickly reset, avoiding the tedious manual reset operation. This design significantly improves operational flexibility during injection, allowing medical personnel to adjust the handle rotation angle at any time according to treatment needs, precisely controlling the vertical tube's displacement speed and distance, thereby achieving flexible adjustment of the contrast agent injection rate and effectively reducing hand fatigue during prolonged operation.

[0014] 2. This invention features a filter membrane mounted on the extended conical ring at the top of the central ring. After the contrast agent flows out from the vertical tube discharge port, it must first be filtered by the filter membrane before entering the subsequent delivery channel. The filter membrane effectively intercepts any tiny impurities, particles, or air bubbles that may be present in the contrast agent, preventing them from causing adverse reactions such as embolism and inflammation when injected into the patient's blood vessels. Simultaneously, the extended conical ring is compatible with the frustum-shaped structure of the tube body and the convergence cavity, allowing it to tightly fit the top of the convergence cavity to seal the medication and prevent contrast agent leakage before injection. Furthermore, the first spring at the bottom of the vertical tube not only assists in the vertical tube's repositioning but also provides flexible support for the filter membrane, preventing excessive compression and damage to the membrane when the vertical tube moves downwards. This ensures the filter membrane continuously and stably performs its filtering function, providing a safe guarantee for contrast agent delivery.

[0015] 3. This invention features a frustum-shaped diversion cone at the bottom of the tube's inner cavity, which, together with diversion plates and diversion holes on the cone, forms a multi-channel diversion structure. After the filtered contrast agent enters the bottom of the tube, it is evenly dispersed between the diversion plates under the guidance of the cone, and then flows stably to the needle through the diversion holes. This avoids pulsed delivery of the contrast agent due to uneven local flow rates, ensuring a constant and uniform flow rate and improving the stability of the contrast agent's imaging effect. Furthermore, the temporary injection tube at the top of the vertical tube serves as a quantitative storage container for the contrast agent. Medical personnel can pre-inject a predetermined dose of contrast agent into the temporary injection tube based on the patient's weight, examination site, and other diagnostic needs. By controlling the vertical tube's displacement, the contrast agent can be completely pushed forward, solving the problem of quantitative delivery in existing devices and minimizing dosage error, further improving injection accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0017] Figure 1 This is a front view of the overall structure of the present invention.

[0018] Figure 2 This is a side view of the overall structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the tube body, mounting plate, toothed disc, acrylic transparent plate, flow divider, flow divider cone, and needle of the present invention.

[0020] Figure 4This is a schematic diagram of the temporary injection tube, vertical tube, toothed plate, filter membrane, central ring, and discharge hole of the present invention.

[0021] Figure 5 This is a schematic diagram of the tube body, mounting plate, gear plate, handle, slider, and second spring of the present invention.

[0022] Figure 6 This is a schematic diagram of the flow divider cone and flow divider plate of the present invention.

[0023] Figure 7 This is a schematic diagram of the vertical tube, toothed plate, first spring, central ring, extended conical ring, baffle and filter membrane of the present invention.

[0024] The attached diagram is labeled as follows: 1. Tube body; 2. Gathering chamber; 3. Central ring; 4. Extending conical ring; 5. Filter membrane; 6. Baffle; 7. Sliding column; 8. Elastic support; 9. Vertical tube; 10. Discharge hole; 11. Toothed plate; 12. First spring; 13. Mounting plate; 14. Toothed disc; 15. Handle; 16. Sliding block; 17. Second spring; 18. Temporary injection tube; 19. Diverting cone; 20. Diverting plate; 21. Diverting hole; 22. Acrylic transparent plate; 23. Needle. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] This embodiment discloses a cardiovascular angiography injection device, which aims to solve the problems of poor injection flexibility, low accuracy and difficulty in quantitative fluid delivery of existing devices.

[0027] It includes a tube body 1, which is equipped with a push component for precise delivery of contrast agent.

[0028] As shown in Figures 1 and 2, the core structure of this cardiovascular angiography injection device includes a tube body 1 and a pushing component mounted on the tube body 1. It is also equipped with auxiliary structures such as a mounting plate 13, a toothed disc 14, a handle 15, a temporary injection tube 18, a shunt cone 19, a needle 23, and an acrylic transparent plate 22. All components work together to ensure the accuracy, stability, and convenience of the contrast agent injection process.

[0029] As shown in Figures 4 and 7, the specific structure and functions of the push component are as follows:

[0030] The push assembly includes a central ring 3 located in the middle of the tube body 1. The tube body 1 has a gathering cavity 2 inside. The central ring 3 provides a foundation for the installation and support of other components of the push assembly, while the gathering cavity 2 is used to temporarily gather the contrast agent, laying the foundation for subsequent precise push.

[0031] An extended conical ring 4 is provided at the top of the central ring 3, and a filter membrane 5 for filtration is provided at the top of the extended conical ring 4. The filter membrane 5 can effectively filter impurities in the contrast agent, preventing impurities from entering the patient's blood vessels and causing adverse reactions; the extended conical ring 4 is adapted to the frustum-shaped structure of the tube body 1 and the convergence cavity 2, and can extend to the top of the inner cavity of the convergence cavity 2 to seal the drug solution and prevent leakage of the contrast agent before injection.

[0032] A baffle 6 for blocking is provided in the middle of the central ring 3. A sliding post 7 is provided at the bottom of the baffle 6, and the sliding post 7 passes through the central ring 3 and extends to the bottom of the central ring 3. An elastic support member 8 is sleeved on the outside of the sliding post 7, which abuts against the bottom of the central ring 3. The baffle 6 can play a certain role in blocking the contrast agent. With the elastic force of the elastic support member 8, it can buffer the contrast agent during injection and avoid sudden changes in the injection speed. At the same time, the sliding post 7 can ensure the stability of the baffle 6 during the up and down movement.

[0033] The top of the tube body 1 is equipped with a vertically movable tube 9, and the bottom of the vertical tube 9 has a discharge hole 10. Several toothed plates 11 are sleeved on the outside of the vertical tube 9, and the toothed plates 11 are stacked. Several first springs 12 are provided at the bottom of the vertical tube 9, and the bottom end of each first spring 12 extends to the filter membrane 5. The vertical displacement of the vertical tube 9 can drive the discharge hole 10 to release and stop the contrast agent. The stacked toothed plates 11 provide the driving basis for the displacement of the vertical tube 9. The first springs 12 can assist the vertical tube 9 to return to its original position with their own elastic force after the vertical tube 9 moves down, and at the same time play a certain role in protecting the filter membrane 5, preventing the filter membrane 5 from being damaged due to excessive force.

[0034] As shown in Figure 3, both the tube body 1 and the gathering cavity 2 are truncated cone-shaped. This design not only facilitates the extension of the conical ring 4 to the top of the gathering cavity 2 to seal the contrast agent, but also guides the contrast agent to gather towards the center, improving the utilization rate of the contrast agent. Mounting plates 13 are respectively provided on both sides of the top of the tube body 1. The mounting plates 13 provide a stable mounting platform for the drive components such as the gear disc 14, ensuring the normal operation of the drive structure.

[0035] As shown in Figure 5, two mounting plates 13 are rotatably connected to toothed discs 14, and each toothed disc 14 has a handle 15 on its outer side. The toothed discs 14 mesh with the toothed plates 11. By turning the handles 15, medical personnel can rotate the toothed discs 14. Since the toothed discs 14 mesh with the toothed plates 11, the rotation of the toothed discs 14 can be converted into the up-and-down movement of the toothed plates 11, which in turn drives the vertical tube 9 to move up and down, providing power for the injection of contrast agent.

[0036] Meanwhile, each of the two handles 15 has a groove on one side, and a slider 16 is slidably connected in each groove. A second spring 17 is installed on the slider 16, with one end of the second spring 17 extending to the bottom side of the mounting plate 13. When medical staff rotate the handle 15, the slider 16 slides in the groove, causing the second spring 17 to be stretched or compressed. When medical staff release the handle 15, the second spring 17 uses its own elastic force to drive the slider 16 to reset, thereby driving the handle 15 and the toothed disc 14 to reset, realizing the automatic reset of the vertical tube 9, simplifying the operation process and improving the injection efficiency.

[0037] A temporary injection tube 18 is provided at the top of the vertical tube 9. The temporary injection tube 18 is connected to the vertical tube 9, and the vertical tube 9 is inserted into the tube body 1 and slidably connected to the tube body 1. The temporary injection tube 18 can be used to temporarily store contrast agent. Medical staff can inject an appropriate amount of contrast agent into the temporary injection tube 18 according to the needs of diagnosis and treatment, and then control the displacement of the vertical tube 9 to achieve precise injection of contrast agent, which facilitates quantitative delivery and solves the problem of difficult quantitative delivery in existing devices.

[0038] As shown in Figure 6, a flow-diverting cone 19 is provided at the bottom of the inner cavity of the tube body 1. The flow-diverting cone 19 is shaped like a frustum. Several flow-diverting plates 20 are located on the outer side of the slider 16, and several flow-diverting holes 21 are distributed between each pair of adjacent flow-diverting plates 20. All flow-diverting holes 21 are formed through the flow-diverting cone 19. After the contrast agent is released from the discharge hole 10, it enters the bottom of the inner cavity of the tube body 1. Guided by the flow-diverting cone 19 and diverted by the flow-diverting plates 20 and flow-diverting holes 21, the contrast agent flows evenly and stably to the needle tip 23, avoiding local accumulation or uneven flow rate of the contrast agent within the tube body, thus further improving the injection accuracy.

[0039] The bottom of the tube body 1 is equipped with a needle 23 extending to the bottom of the inner wall of the shunt cone 19. The needle 23 is used to inject contrast agent into the patient's heart chamber or blood vessels. The connection between the needle 23 and the shunt cone 19 ensures that the contrast agent can smoothly enter the needle 23 from the shunt structure. An acrylic transparent plate 22 is embedded in the side of the tube body 1. Medical staff can observe the remaining amount of contrast agent, the flow status, and the usage of the filter membrane 5 inside the tube body 1 in real time through the acrylic transparent plate 22, which facilitates timely adjustment of the injection operation and improves the safety and reliability of diagnosis and treatment.

[0040] The specific working principle is as follows: Medical staff first inject an appropriate amount of contrast agent into the temporary storage injection tube 18. The contrast agent flows into the vertical tube 9 through the temporary storage injection tube 18. At this time, since the vertical tube 9 is in the initial position, the discharge hole 10 is not fully connected to the convergence cavity 2, and the contrast agent is temporarily stored in the vertical tube 9.

[0041] When contrast agent injection is required, medical staff hold both handles 15 and rotate them towards the tube body 1. The handles 15 drive the toothed disc 14 to rotate within the mounting plate 13. Since the toothed disc 14 meshes with the toothed plate 11 on the outside of the vertical tube 9, the rotation of the toothed disc 14 causes the toothed plate 11 to move downward, thereby causing the vertical tube 9 to move downward along the tube body 1.

[0042] As the vertical tube 9 moves downward, its bottom discharge hole 10 gradually connects with the focusing cavity 2, and the contrast agent in the vertical tube 9 flows into the focusing cavity 2 through the discharge hole 10. After the contrast agent is focused in the focusing cavity 2, it passes through the filter membrane 5, which filters out impurities in the contrast agent. The filtered contrast agent then enters the space between the central ring 3 and the baffle 6.

[0043] As the vertical tube 9 continues to descend, the first spring 12 at the bottom of the vertical tube 9 is compressed, simultaneously exerting downward pressure on the baffle 6. The baffle 6 drives the sliding column 7 to move downward, compressing the elastic support 8. When the baffle 6 moves to a certain position, it contacts the top of the shunt cone 19, opening the space between the baffle 6 and the central ring 3, allowing the filtered contrast agent to flow into the bottom of the inner lumen of the tube body 1. Under the action of the shunt cone 19, the shunt plate 20, and the shunt orifice 21, the contrast agent is evenly shunted and flows to the needle 23, ultimately being injected into the patient's heart chamber or blood vessel through the needle 23.

[0044] When the injection is complete or needs to be paused, the medical staff releases handle 15. The second spring 17, using its own elastic force, pulls the slider 16 to slide within the groove of handle 15, causing handle 15 to rotate in the opposite direction, thereby resetting the gear disc 14. The resetting of the gear disc 14 causes the gear plate 11 and the vertical tube 9 to move upward, the vertical tube 9 returns to its initial position, the discharge hole 10 is disconnected from the collection cavity 2, and the contrast agent injection stops. At the same time, the first spring 12 and the elastic support 8 also use their own elastic force to push the vertical tube 9 and the baffle 6 to reset respectively, preparing for the next injection.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cardiovascular angiography injection device, comprising a tubing (1), characterized in that: A pusher component is provided on the tube body (1); The pushing component includes a central ring (3) disposed in the middle of the tube body (1), a gathering cavity (2) is provided inside the tube body (1), an extension cone ring (4) is provided at the top of the central ring (3), a filter membrane (5) for filtration is provided at the top of the extension cone ring (4), and a baffle (6) for blocking is provided in the middle of the central ring (3). The bottom of the baffle (6) is provided with a sliding post (7), and the sliding post (7) passes through the central ring (3) and extends to the bottom of the central ring (3). An elastic support member (8) is sleeved on the outside of the sliding post (7) and abuts against the bottom of the central ring (3). The top of the tube body (1) is provided with a vertical tube (9) that can move up and down. The bottom of the vertical tube (9) is provided with a discharge hole (10). Several toothed plates (11) are sleeved on the outside of the vertical tube (9), and each toothed plate (11) is stacked. Several first springs (12) are provided at the bottom of the vertical tube (9), and the bottom of each first spring (12) extends to the filter membrane (5). The tube body (1) and the gathering cavity (2) are both set in the shape of a frustum, so that the extension cone ring (4) extends to the top of the inner cavity of the gathering cavity (2) to seal the liquid medicine. The top two sides of the tube body (1) are respectively provided with mounting plates (13). The two mounting plates (13) are respectively rotatably connected to a toothed disc (14), and each toothed disc (14) is provided with a handle (15) on its outer side. The toothed disc (14) meshes with the toothed plate (11) so that the toothed disc (14) deflects and drives the vertical tube (9) to move up and down. The bottom of the inner cavity of the tube (1) is provided with a flow-dividing cone (19), and the flow-dividing cone (19) is shaped like a frustum. The outer side of the diversion cone (19) is provided with several diversion plates (20), and several diversion holes (21) are distributed between each two adjacent diversion plates (20). All of the diversion holes (21) are opened through the diversion cone (19).

2. The cardiovascular angiography injection device according to claim 1, characterized in that: Each of the two handles (15) has a sliding groove on one side, and a slider (16) is slidably connected in each sliding groove. A second spring (17) is provided on the slider (16). One end of the second spring (17) extends to the bottom side of the mounting plate (13), so that when the handle (15) is deflected, the second spring (17) is subjected to force and the toothed disc (14) is reset by the elastic drive of the second spring (17) itself.

3. The cardiovascular angiography injection device according to claim 1, characterized in that: The top end of the vertical tube (9) is provided with a temporary injection tube (18), which is connected to the vertical tube (9), and the vertical tube (9) is inserted into the tube body (1) and slidably connected to the tube body (1).

4. The cardiovascular angiography injection device according to claim 1, characterized in that: The bottom of the tube (1) is provided with a needle (23) extending to the bottom of the inner wall of the diversion cone (19), and an acrylic transparent plate (22) is embedded in the side of the tube (1).

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