Acoustic contrast injection device

Abstract

The invention discloses an acoustic contrast injection device which comprises a second empty barrel connected with the side wall of a first empty barrel. A pressurizing mechanism and a piston connected with the pressurizing mechanism are arranged in the second empty barrel, the pressurizing mechanism is driven to drive the piston in the second empty barrel to move under the reciprocating action of a piston shaft and the piston in the first empty barrel, pressure is applied to a contrast agent through the piston in the second empty barrel, and the contrast agent is driven to flow towards the first empty barrel; the first empty barrel and the second empty barrel are used for containing radiography liquid raw materials, a doctor fixes the first empty barrel and the second empty barrel with one hand, the piston shaft is rapidly pushed and pulled in a reciprocating mode with the other hand, the first empty barrel and the second empty barrel push and inject normal saline and blood into the first empty barrel and the second empty barrel to be mixed with air in the second empty barrel, and therefore radiography bubbles uniform in size are formed. Under the action of the pressurizing mechanism, the operation is simpler, and compared with a pneumatic or electric mode for injecting the contrast agent, the equipment cost and the use cost are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an acoustic contrast injection device. Background Technology

[0002] During right ventricular contrast imaging, contrast agent is injected via a peripheral vein. The contrast agent bubbles are larger than 10 micrometers, with an average size of about 15 micrometers. They cannot pass through pulmonary capillary aneurysms and cannot enter the left ventricular system. At the same time, due to the significant acoustic impedance difference between microbubbles and blood, even individual microbubbles (low-speed, minute blood flow) can be clearly visualized. Then, based on the imaging sequence, pathway, and time, a diagnosis and differential diagnosis can be made for certain structural and blood flow abnormalities.

[0003] Currently, the commonly used contrast agent is a oscillating saline microbubble. Two syringes are connected via a medical three-way valve. One syringe contains 8 ml of saline and 1 ml of blood, while the other contains 1 ml of air. Medical staff manually alternately push the two syringes to agitate the saline into milky-white contrast agent microbubbles. However, this method has many drawbacks. The two syringes require a three-way valve, as well as connection to the injection tubing and needle, making the structure relatively complex. Furthermore, the alternating pushing of the two syringes by hand is difficult. In addition, some existing contrast injection devices are electrically or pneumatically driven, significantly increasing equipment and operating costs. The devices also require considerable space, and operators need specialized training before they can operate them, further increasing labor costs. Therefore, those skilled in the art have proposed an acoustic contrast injection device to address the problems mentioned in the background section. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an acoustic contrast injection device, including a first empty barrel, a piston shaft is provided inside the first empty barrel, a piston is connected to the end of the piston shaft located inside the first empty barrel, the piston can move along the axial direction of the first empty barrel, and also includes a second empty barrel, the discharge port of the second empty barrel is connected to the side wall of the first empty barrel. The second empty container is equipped with a pressurizing mechanism and a piston connected to the pressurizing mechanism. Under the action of the piston shaft and the reciprocating movement of the piston in the first empty container, the pressurizing mechanism is driven to move the piston in the second empty container. The piston in the second empty container applies pressure to the contrast agent, driving the contrast agent to flow into the first empty container.

[0005] Preferably, the first empty bucket has a first connecting pipe connected to the side wall near the liquid outlet, and the second empty bucket is provided with a second connecting pipe. The second connecting pipe is used for discharging material. The first connecting pipe and the second connecting pipe are connected by a two-way valve. By opening or closing the two-way valve, the connection and closure of the first connecting pipe and the second connecting pipe can be realized.

[0006] Preferably, the first empty bucket and the second empty bucket are arranged in parallel or at an angle.

[0007] Preferably, there is a cavity between the piston inside the second empty barrel and the inner wall of the second empty barrel. In use, the air in the cavity is mixed with the contrast agent raw material extracted from the first empty barrel to form contrast bubbles.

[0008] Preferably, it also includes a fastener disposed between the first empty bucket and the second empty bucket to support the first empty bucket and the second empty bucket.

[0009] Preferably, a counter is also installed on the fixing member to record the number of reciprocating push-pull cycles of the piston shaft.

[0010] Preferably, it also includes a drive mechanism, which is connected to the booster mechanism. The drive mechanism presses the button of the counter under the drive of the booster mechanism for counting.

[0011] Preferably, the driving mechanism includes a driving rod, one end of which is fixedly connected to a limiting sleeve, and the other end of which is equipped with an upper magnet. A lower magnet is located below the upper magnet and is installed at one end of a movable rod. The lower magnet is located above the button of the counter. The magnetic poles of the lower magnet and the upper magnet are opposite at their closest points. The other end of the movable rod is slidably connected to a sliding rod, and the movable rod can move up and down along the axis of the sliding rod. The lower end of the sliding rod is fixedly connected to a positioning sleeve, and the positioning sleeve is fixedly connected to a support column. A return spring is fitted on the outside of the sliding rod and is located between the movable rod and the positioning sleeve.

[0012] Preferably, the pressurizing mechanism includes a support tube, one end of which is fixedly connected to a piston, a spring is fitted on the outside of the support tube, a limiting sleeve is fitted on the other end of the support tube, the support tube passes through a stopper, and the stopper is installed at the opening of the second empty barrel; The plug has a through-hole in the support tube, allowing the support tube to move axially along the plug. One end of the spring abuts against the plug, and the other end of the spring abuts against the piston.

[0013] Preferably, the outlet of the first empty container is threaded to one end of the injection hose, and an external threaded connector is provided at the connection between the injection hose and the outlet.

[0014] The technical effects and advantages of this invention are as follows: 1. In this invention, the first empty container and the second empty container are used to contain the contrast agent raw materials. The doctor holds the first empty container and the second empty container with one hand, and pushes and pulls the piston shaft back and forth quickly with the other hand. The first empty container and the second empty container push each other to mix the drawn saline and blood with the air in the second empty container, thereby forming a contrast bubble of uniform size. It is then smoothly injected into the human body through the injection tube. With the action of the pressurization mechanism, the operation is simpler. Compared with the use of pneumatic or electric methods to inject contrast agents, it greatly reduces equipment costs and operating costs.

[0015] 2. In this invention, with the assistance of the pressurizing mechanism, it can be operated by pressing with one finger, and the three-way connector used in traditional injection is reduced, resulting in a simpler structure, lower cost, and higher stability.

[0016] 3. In this invention, the driving mechanism, driven by the pressurizing mechanism, can synchronously drive the counter to count. When the counter displays the number of times the piston shaft needs to be pressed, the doctor can stop the operation.

[0017] 4. In this invention, 8 ml of physiological saline is drawn from the first empty tank, and then 1 ml of blood is drawn. After connecting with the second empty tank, the blood can be mixed with 1 ml of air in the second empty tank without adjusting the position of the piston in the second empty tank, thus making the operation more convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the acoustic contrast injection device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the first empty barrel in the acoustic contrast injection device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the internal structure of the second empty barrel in the acoustic contrast injection device provided in this application embodiment; Figure 4 This is a schematic diagram of the drive mechanism in the acoustic contrast injection device provided in this application embodiment; Figure 5 This is a schematic diagram of the acoustic contrast injection device provided in another embodiment of this application; Figure 6 This is a schematic diagram of the acoustic contrast injection device provided in another embodiment of this application; Figure 7 This is a schematic diagram of the structure of the second empty barrel in an acoustic contrast injection device provided in another embodiment of this application. In the figure: 100, first empty barrel; 110, first connecting pipe; 120, piston shaft; 200, second empty barrel; 210, second connecting pipe; 220, support pipe; 230, piston; 240, spring; 250, plug; 260, limiting sleeve; 270, plug; 280, sleeve; 290, guide rod; 300, injection tubing; 400, drive mechanism; 410, drive rod; 420, upper magnet; 430, movable rod; 440, lower magnet; 450, sliding rod; 460, positioning sleeve; 470, return spring; 500, first fixing member; 510, clamp; 520, support column; 530, support rod; 540, counter; 550, limiting protrusion; 600, two-way valve; 700, second fixing member. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0020] Please see Figures 1-2 As shown, this embodiment provides an acoustic contrast injection device, including a first empty barrel 100 and a second empty barrel 200. The bottoms of the first empty barrel 100 and the second empty barrel 200 are connected. The discharge port of the second empty barrel 200 is connected to the side wall of the first empty barrel 100. It also includes a fixing member, which is disposed between the first empty barrel 100 and the second empty barrel 200 to support the first empty barrel 100 and the second empty barrel 200, so that the first empty barrel 100 and the second empty barrel 200 are more stable during use. A counter 540 is also installed on the fixing member to record the number of reciprocating push and pull of the piston shaft 120.

[0021] It also includes a drive mechanism 400, which is connected to a booster mechanism. The drive mechanism 400 presses the button of the counter 540 for counting under the drive of the booster mechanism.

[0022] The outlet of the first empty container 100 is threadedly connected to one end of the injection tubing 300. The connection between the injection tubing 300 and the outlet is provided with an external threaded connector. The second empty container 200 is provided with a pressurizing mechanism for pressurizing the contrast agent. Under the action of the piston shaft 120 and the reciprocating movement of the piston in the first empty container 100, the pressurizing mechanism drives the piston 230 in the second empty container 200 to move. The piston 230 in the second empty container 200 pressurizes the contrast agent and drives the contrast agent to flow into the first empty container 100.

[0023] A piston shaft 120 is provided inside the first empty barrel 100. One end of the piston shaft 120 is located inside the first empty barrel 100 and is connected to a piston. The piston can move along the axial direction of the first empty barrel 100. The other end of the piston shaft 120 extends to the outside of the first empty barrel 100. This design is prior art and will not be described in detail here.

[0024] In use, the first empty container 100 and the second empty container 200 are used to contain contrast fluid raw materials and blood. The contrast fluid raw materials can be saline for right heart contrast imaging or saline and contrast powder for left heart contrast imaging. The contrast fluid raw materials in the first empty container 100 are fully mixed to form a microbubble suspension. One hand holds the first empty container 100 and the second empty container 200, while the fingers of the other hand quickly press the piston shaft 120. The first empty container 100 and the second empty container 200 push each other to inject the air, saline and blood they have drawn in, thereby forming contrast bubbles of uniform size. The contrast bubbles are then smoothly injected into the human body through the injection tubing 300. With the action of the pressurization mechanism, the operation is even simpler.

[0025] The first empty bucket 100 and the second empty bucket 200 are set in parallel, and can also be at an angle. The angle can be set or adjusted according to actual needs to facilitate the operation of doctors.

[0026] Please see Figure 2-3 As shown, in this embodiment, the fixing member is a first fixing member 500. The first fixing member 500 includes a clamp 510 and a support column 520 connected to the clamp 510. The clamp 510 is arc-shaped, and there are two clamps 510. The outer walls of the two clamps 510 are respectively fixed to the two ends of the support column 520. The two clamps 510 are symmetrically arranged at the two ends of the support column 520.

[0027] The clamp 510 is made of elastic material, including but not limited to PVC or metal, so that the clamp 510 can be fitted onto the outside of the first empty barrel 100 or the second empty barrel 200 for easy installation and removal.

[0028] Furthermore, the support column 520 and the clamp 510 are made of the same material, which allows the first fixing member 500 to be integrally formed. On the one hand, the structure of the first fixing member 500 is more stable, and on the other hand, it can save production costs.

[0029] Furthermore, a support rod 530 is fixedly connected to one end of the support column 520. The support rod 530 is used to install the counter 540. The strap connecting the counter 540 is fixed to the support rod 530. The support rod 530 is also provided with a limiting protrusion 550. Multiple limiting protrusions 550 can be provided. The limiting protrusions 550 abut against the side wall of the counter 540 to prevent the counter 540 from being displaced during use.

[0030] Furthermore, in this embodiment, the counter 540 can be selected as an electronic counter or a manual counter according to actual needs. During the angiography, the doctor can operate the counter 540 with his other hand to count. When the counter 540 displays the number of times the piston shaft 120 needs to be pressed, the doctor can stop the operation.

[0031] The first empty tank 100 is connected to the first connecting pipe 110 on the side wall near the liquid outlet. The second empty tank 200 is provided with a second connecting pipe 210, which is used for discharging material. The first connecting pipe 110 and the second connecting pipe 210 are connected by a two-way valve 600. By opening or closing the two-way valve 600, the connection and closure of the first connecting pipe 110 and the second connecting pipe 210 can be realized.

[0032] In use, the first connecting pipe 110 is inserted into one end of the two-way valve 600, the second connecting pipe 210 is inserted into the other end of the two-way valve 600, and then the first connecting pipe 110 and the second connecting pipe 210 are fixed together with the two-way valve 600 by two locking pieces 610 respectively.

[0033] Furthermore, the locking element 610 can be a bolt, and the two-way valve 600 has a corresponding screw hole.

[0034] The locking element 610 can also be a pin, with an insertion hole in the two-way valve 600 and a slot in the first connecting pipe 110 and the second connecting pipe 210.

[0035] In this embodiment, the pressurizing mechanism includes a support tube 220, one end of which is fixedly connected to a piston 230. A spring 240 is fitted on the outside of the support tube 220, and a limiting sleeve 260 is fitted on the other end of the support tube 220. The support tube 220 passes through a stopper 250, which is installed at the opening of the second empty barrel 200. The stopper 250 has a through-hole corresponding to the support tube 220, so that the support tube 220 can move axially along the stopper 250. One end of the spring 240 abuts against the stopper 250, and the other end of the spring 240 abuts against the piston 230.

[0036] Specifically, the limiting sleeve 260 is located outside the plug 250 and can be threaded or bonded to the support tube 220. This prevents the support tube 220 from fully entering the second empty tank 200 under the action of the spring 240. It also allows for a cavity with a volume of 1ml between the piston 230 inside the second empty tank 200 and the inner wall of the second empty tank 200. This allows saline solution to enter the cavity through the first connecting tube 110 and the second connecting tube 210 and mix with air. With this design, the first empty tank 100 can draw 8ml of saline solution and then draw 1ml of blood. After connecting with the second empty tank 200, the blood can mix with the 1ml of air inside the second empty tank 200 without needing to adjust the position of the piston 230 inside the second empty tank 200 to draw 1ml of air, thus making the operation more convenient.

[0037] Furthermore, the stopper 250 can be equipped with a snap-fit ​​structure to connect with the second empty container 200, or it can be fixed together with the second empty container 200 by adhesive bonding.

[0038] See Figure 4As shown, the drive mechanism 400 includes a drive rod 410. One end of the drive rod 410 is fixedly connected to a limiting sleeve 260. An upper magnet 420 is installed at the other end of the drive rod 410. A lower magnet 440 is located below the upper magnet 420. The lower magnet 440 is installed at one end of the movable rod 430 and is located above the button of the counter 540. The magnetic poles of the lower magnet 440 and the upper magnet 420 are opposite at their respective ends. When the upper magnet 420 and the lower magnet 440 approach each other, they repel each other under the action of magnetic force. The other end of the movable rod 430 is slidably connected to a slide rod 450. The movable rod 430 can move up and down along the axis of the slide rod 450. The lower end of the slide rod 450 is fixedly connected to a positioning sleeve 460. The positioning sleeve 460 is fixedly connected to a support column 520. A return spring 470 is fitted on the outside of the slide rod 450. The return spring 470 is located between the movable rod 430 and the positioning sleeve 460.

[0039] When the drive rod 410 moves downward with the limit sleeve 260, it drives the drive rod 410 and the upper magnet 420 to move downward. The upper magnet 420 and the lower magnet 440 move closer to each other. Under the action of magnetic force, the lower magnet 440 and the movable rod 430 move downward. The return spring 470 is compressed. When the movable rod 430 contacts the button of the counter 5, the counter 5 counts once. When the drive rod 410 moves upward with the limit sleeve 260, it drives the drive rod 410 and the upper magnet 420 to move upward. The upper magnet 420 and the lower magnet 440 move away from each other. Under the action of the return spring 470, the movable rod 430 and the lower magnet 440 move upward. The movable rod 430 separates from the button of the counter 5. This reciprocating operation can trigger the counter 5 to count while the piston shaft 120 is being pushed and pulled back and forth, making it convenient for doctors to observe the number of times the piston shaft 120 is pushed and pulled back and forth.

[0040] In use, the piston shaft 120 is pressed quickly with a finger, and the saline solution in the first empty tank 100 enters the second empty tank 200 through the first connecting tube 110 and the second connecting tube 210. The piston 230 is compressed by the spring 240, and the support tube 220 moves upward along the stopper 250. When the piston shaft 120 is released, under the action of the spring 240, the piston 230 compresses the saline solution and air to mix. By repeatedly pressing and releasing the piston shaft 120, the first empty tank 100 and the second empty tank 200 push each other to inject the air and saline solution they have drawn in, thereby forming a uniformly sized contrast air bubble. Then, the two-way valve 600 is closed to cut off the connection between the first empty tank 100 and the second empty tank 200. The piston shaft 120 is then pushed to smoothly inject the contrast air bubble into the human body. With the assistance of the pressurization mechanism, it can be operated with just one finger, and the three-way connector used in traditional injection is reduced, making the structure simpler and the stability higher.

[0041] See Figure 5As shown, in another embodiment, based on the above embodiment, the fixing member is a second fixing member 700. The second fixing member 700 is a shell structure with an opening at one end. The first empty tank 100 and the second empty tank 200 are placed in the second fixing member 700 and fixed. The first empty tank 100 and the second empty tank 200 are connected. The bottom of the second fixing member 700 is provided with a through hole 801 corresponding to the liquid outlet of the first empty tank 100 and the second empty tank 200.

[0042] In use, the doctor holds the outer wall of the second fixation member 700 with one hand and presses the piston shaft 120 with the fingers of the other hand. Following the operation described in the above embodiment, the piston shaft 120 is repeatedly pressed and released. The first empty barrel 100 and the second empty barrel 200 push each other to inject the air, saline and blood they have drawn in, thereby forming uniformly sized contrast bubbles and injecting them smoothly into the human body. With the assistance of the pressurization mechanism, it can be operated with just one finger. It also reduces the number of three-way connectors used in traditional injections, making the structure simpler and more stable.

[0043] See Figure 6-7 As shown, in another embodiment, the second empty bucket 200 can also be perpendicular to the first empty bucket 100. A piston 230 is provided inside the second empty bucket 200. A sleeve 280 is fixedly connected to one side of the piston 230. A spring 240 is fitted on the outside of the sleeve 280. A plug 270 is installed at the opening of the second empty bucket 200. A guide rod 290 is fixedly connected to the inner wall of the plug 270. The guide rod 290 can be inserted into the sleeve 280, and the sleeve 280 and the guide rod 290 are slidably connected.

[0044] In this embodiment, the plug 270 and the second empty bucket 200 are connected together by a snap-fit. Alternatively, the plug 270 can be provided with an external thread and the inner wall of the second empty bucket 200 can be provided with an internal thread, and the two can be fixed together by a threaded connection.

[0045] A cavity with a volume of 1 ml is provided between the piston 230 and the discharge port of the second empty tank 200 to contain air. During use, the air in the cavity is mixed with the contrast agent raw material drawn from the first empty tank 100 to form contrast bubbles. Through this design, 8 ml of physiological saline drawn from the first empty tank 100 can be mixed with the 1 ml of air inside the second empty tank 200 after being connected to it, eliminating the need to adjust the position of the piston 230 inside the second empty tank 200 to draw 1 ml of air, thus making operation more convenient. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention are implemented according to conventional means in the art unless otherwise specified or limited.

Claims

1. An acoustic contrast injection device, comprising a first empty container, a piston shaft disposed within the first empty container, a piston connected to the end of the piston shaft located within the first empty container, the piston being movable axially along the first empty container, characterized in that, It also includes a second empty barrel, the discharge port of which is connected to the side wall of the first empty barrel; The second empty container is equipped with a pressurizing mechanism and a piston connected to the pressurizing mechanism. Under the action of the piston shaft and the reciprocating movement of the piston in the first empty container, the pressurizing mechanism is driven to move the piston in the second empty container. The piston in the second empty container applies pressure to the contrast agent, driving the contrast agent to flow into the first empty container.

2. The acoustic contrast injection device according to claim 1, characterized in that, The first empty bucket has a first connecting pipe connected to the side wall near the liquid outlet. The second empty bucket has a second connecting pipe opposite it. The second connecting pipe is used for discharging material. The first connecting pipe and the second connecting pipe are connected by a two-way valve. By opening or closing the two-way valve, the connection and closure of the first connecting pipe and the second connecting pipe can be realized.

3. The acoustic contrast injection device according to claim 1, characterized in that, The first empty bucket and the second empty bucket are arranged in parallel or at an angle.

4. The acoustic contrast injection device according to claim 1, characterized in that, There is a cavity between the piston inside the second empty barrel and the inner wall of the second empty barrel. When in use, the air in the cavity is mixed with the contrast agent raw material extracted from the first empty barrel to form contrast bubbles.

5. The acoustic contrast injection device according to claim 1, characterized in that, It also includes a fastener, which is disposed between the first empty bucket and the second empty bucket to support the first empty bucket and the second empty bucket.

6. The acoustic contrast injection device according to claim 5, characterized in that, The fixing component is also equipped with a counter to record the number of times the piston shaft reciprocates.

7. The acoustic contrast injection device according to claim 6, characterized in that, It also includes a drive mechanism, which is connected to a booster mechanism. The drive mechanism presses the button of the counter under the drive of the booster mechanism for counting.

8. The acoustic contrast injection device according to claim 7, characterized in that, The driving mechanism includes a driving rod, one end of which is fixedly connected to a limiting sleeve, and the other end of which is equipped with an upper magnet. A lower magnet is located below the upper magnet and is installed at one end of a movable rod. The lower magnet is located above the button of the counter. The magnetic poles of the lower magnet and the upper magnet are opposite at their closest points. The other end of the movable rod is slidably connected to a sliding rod, which can move up and down along the axis of the sliding rod. The lower end of the sliding rod is fixedly connected to a positioning sleeve, which is fixedly connected to a support column. A return spring is fitted on the outside of the sliding rod and is located between the movable rod and the positioning sleeve.

9. The acoustic contrast injection device according to claim 1, characterized in that, The pressurization mechanism includes a support tube, one end of which is fixedly connected to a piston. A spring is fitted on the outside of the support tube, and a limiting sleeve is fitted on the other end of the support tube. The support tube passes through a stopper, which is installed at the opening of the second empty barrel. The plug has a through-hole in the support tube, allowing the support tube to move axially along the plug. One end of the spring abuts against the plug, and the other end of the spring abuts against the piston.

10. The acoustic contrast injection device according to claim 1, characterized in that, The outlet of the first empty container is threaded to one end of the injection hose, and an external threaded connector is provided at the connection between the injection hose and the outlet.

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