An ultrasonic contrast agent and normal saline rapid injection device

Abstract

The application discloses an ultrasonic department contrast agent and physiological saline rapid injection device, and belongs to the technical field of medical devices, which comprises a liquid storage pipe, a piston block is slidably arranged in the liquid storage pipe, a mounting head is fixedly arranged at the lower end of the liquid storage pipe, a liquid outlet is formed at the lower end of the mounting head, the liquid outlet is in communication with the liquid storage pipe, a delivery needle is arranged at the lower end of the mounting head, a sharp needle is slidably arranged at the lower side of the delivery needle, a pulling assembly is arranged in the liquid storage pipe, and the pulling assembly is used for pulling the sharp needle, the pulling assembly comprises a connecting frame fixedly connected to the upper end of the sharp needle, a plurality of connecting rods are fixedly arranged at the top outer wall of the connecting frame, and a pressing plate is fixedly arranged at one end of the connecting rod outside the liquid storage pipe, the pressing plate can control the extension and retraction of the sharp needle, the sharp needle is retracted after the delivery needle enters the blood vessel, the sharp needle is prevented from piercing the blood vessel again in subsequent operation to cause harm to the patient, and the safety during the needle insertion process is effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a device for rapid injection of ultrasound contrast agents and saline solution. Background Technology

[0002] In ultrasound diagnosis and treatment, the injection of contrast agents and saline is a crucial step in many examinations and treatments. The safety and accuracy of this procedure directly impact the treatment outcome and patient experience. Currently, most injection devices used clinically are syringes, which have revealed numerous technical deficiencies in practical use, failing to meet the clinical demands for safe, efficient, and precise injection. The puncture structure design of traditional injection devices presents safety hazards. The needle tip is often a fixed point, which, after insertion into the patient's blood vessel, can easily puncture the vessel wall again during subsequent adjustments, leading to vascular damage, bleeding, pain, and even complications, severely compromising the safety of the puncture process. Furthermore, the sharp tip of the needle is prone to scraping against the vessel wall during movement, further exacerbating vascular damage. Additionally, the fixed needle poses a risk of injury to personnel during retrieval after use.

[0003] In view of this, the present invention discloses a rapid injection device for ultrasound contrast agents and physiological saline. Summary of the Invention

[0004] To address the safety deficiencies in existing technologies, the present invention aims to provide a rapid injection device for ultrasound contrast agents and saline solution.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A rapid injection device for ultrasound contrast agents and saline includes a reservoir tube, a piston block slidably installed inside the reservoir tube, an installation head fixedly installed at the lower end of the reservoir tube, an outlet at the lower end of the installation head communicating with the inside of the reservoir tube, a delivery needle installed at the lower end of the installation head, a pointed needle slidably installed inside the bottom end of the delivery needle, a groove formed on the inner wall of the delivery needle, and a protrusion formed on the upper side of the outer wall of the pointed needle at a position corresponding to the groove, the protrusion sliding inside the groove;

[0007] The liquid storage tube is equipped with a pulling component for pulling the needle. The pulling component includes a connecting frame fixedly connected to the upper end of the needle. Multiple connecting rods are fixedly installed on the outer wall of the top of the connecting frame. The connecting rods extend through the outer wall of the liquid storage tube to the outside of the liquid storage tube. A pressing plate is fixedly installed at the end of the connecting rod located outside the liquid storage tube.

[0008] Optionally, a fixing plate is installed on the outer wall of the liquid storage tube and at a position below the pressing plate, and a compression spring is provided between the fixing plate and the pressing plate.

[0009] Optionally, the lower side of the connecting frame extends through the piston block to the lower side of the piston block, the piston block and the connecting frame are coaxially arranged, and a sealing gasket is embedded in the contact part between the piston block and the connecting frame.

[0010] Optionally, the lower end of the delivery needle has a rounded corner structure, and multiple openings are provided through the lower outer wall of the delivery needle. A push rod is slidably installed inside the openings, and the end of the push rod away from the center of the delivery needle has a hemispherical structure.

[0011] Optionally, a pressure block is fixedly installed at one end of the push rod inside the delivery needle. The pressure block has a hemispherical structure and its diameter is larger than that of the push rod. Multiple slots are opened on the outer wall of the needle corresponding to the position of the push rod, and each push rod passes through and is slidably connected in each corresponding slot.

[0012] Optionally, multiple extrusion frames are fixedly installed inside the upper side of the needle, and the extrusion frames are all inclined. The upper ends of the multiple extrusion frames are fixedly connected to each other, and the bottom end of each extrusion frame is connected to the inner bottom wall of each corresponding slot. The number of extrusion frames is equal to the number of slots.

[0013] Optionally, a push handle is fixedly installed on the upper end of the piston block. The top of the push handle extends through the top wall of the liquid storage tube to the outside of the liquid storage tube. A rotating plate is rotatably connected to the upper part of the inside of the liquid storage tube. The push handle extends through the rotating plate to the lower side of the rotating plate. The push handle is slidably connected to the rotating plate. A sealing gasket is embedded at the contact point between the rotating plate and the push handle. The connecting frame passes through the center of the rotating plate and is coaxially arranged with the rotating plate. A sealing gasket is embedded at the contact point between the rotating plate and the connecting frame.

[0014] Optionally, an air inlet is provided through one side of the rotating plate, and a stop block is fixedly installed on one side of the inner wall of the liquid storage tube at a position corresponding to the air inlet. An arc-shaped groove is provided on the stop block, and the width of the arc-shaped groove gradually decreases from one side to the other.

[0015] Optionally, a groove is provided through the outer wall of the liquid storage tube, and the connecting rod is slidably connected to the groove, with the groove located on the upper side of the rotating plate.

[0016] Optionally, a magnet is embedded at the top of the connecting frame, a handle is installed at the top of the push handle, and an extension rod is provided at the bottom of the handle. The bottom end of the extension rod penetrates the top wall of the liquid storage tube and is slidably connected to the liquid storage tube. A magnet is embedded at the bottom of the extension rod, and the magnet on the connecting frame and the magnet on the extension rod attract each other.

[0017] Compared with the prior art, the technical solution provided by this invention has at least the following beneficial effects:

[0018] In the above scheme, the extension and retraction of the needle tip can be controlled by the set pressure plate. After the delivery needle enters the blood vessel, the needle tip retracts, avoiding secondary puncture of the blood vessel by the needle tip during subsequent operations and preventing harm to the patient, thus effectively ensuring the safety of the acupuncture process.

[0019] The rounded corner structure at the lower end of the delivery needle, combined with the retractable push rod, supports the inner wall of the blood vessel, reducing scratching damage to the blood vessel caused by the delivery needle. The hemispherical push rod further reduces friction damage with the blood vessel, ensuring the safety of the puncture process in all aspects.

[0020] By using the rotating plate and air inlet in conjunction with the arc-shaped groove on the baffle, staff can adjust the airflow by rotating the push handle, thereby precisely controlling the injection speed. This avoids causing discomfort to patients due to excessively fast injection and allows for flexible adjustments based on the needs of patients of different ages, improving the adaptability and comfort of the injection process.

[0021] After injection is completed, the magnet drives the connecting frame and the needle to rise further, so that the lower end of the needle is blocked by the top rod. This effectively prevents the needle from accidentally extending due to shaking or vibration during equipment recovery, avoiding injury to recovery personnel and improving the safety of the equipment throughout its entire life cycle. Attached Figure Description

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the liquid storage tube of the present invention;

[0025] Figure 3 This is a schematic diagram of the rotating plate, the stop block, and the arc-shaped groove of the present invention.

[0026] Figure 4 This is a schematic diagram of the connecting rod and magnet portion of the present invention;

[0027] Figure 5 This is a schematic diagram of the mounting head and delivery needle of the present invention;

[0028] Figure 6 This is a schematic diagram of the groove and opening portion of the present invention;

[0029] Figure 7This is a schematic diagram of the structure of the needle, protrusion, and groove portion of the present invention;

[0030] Figure 8 This is a schematic diagram of the top rod and tip of the present invention.

[0031] [Figure Labels]

[0032] 1. Liquid storage tube; 101. Piston block; 102. Mounting head; 103. Liquid outlet; 104. Fixing plate; 105. Compression spring; 106. Sealing gasket; 107. Push handle; 108. Rotating plate; 109. Air inlet; 110. Stop block; 111. Arc groove; 112. Slide groove; 113. Extension rod;

[0033] 2. Feeding needle; 201. Groove; 202. Opening; 203. Push rod; 204. Pressure block;

[0034] 3. Pointed needle; 301. Protrusion; 302. Groove; 303. Extrusion frame;

[0035] 4. Pull assembly; 401. Connecting frame; 402. Connecting rod; 403. Pressing plate; 404. Magnet.

[0036] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0038] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0039] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0040] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0041] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0042] like Figures 1 to 8 As shown, this embodiment of the invention provides a rapid injection device for ultrasound contrast agents and saline, including a reservoir tube 1, a piston block 101 slidably installed inside the reservoir tube 1, an installation head 102 fixedly installed at the lower end of the reservoir tube 1, an outlet 103 opened at the lower end of the installation head 102, the outlet 103 communicating with the inside of the reservoir tube 1, a delivery needle 2 installed at the lower end of the installation head 102, a pointed needle 3 slidably installed at the bottom end of the delivery needle 2, both the pointed needle 3 and the delivery needle 2 are hollow structures, grooves 201 are opened on both sides of the inner wall of the delivery needle 2, and a protrusion 301 is opened at the top of the outer wall of the pointed needle 3 at a position corresponding to the groove 201. The protrusion 301 slides inside the groove 201, the groove 201 is used to restrict the movement direction of the protrusion 301, and the pointed needle 3 can move along the direction of the groove 201 under the action of the protrusion 301 when moving, thereby preventing the pointed needle 3 from rotating relative to the delivery needle 2.

[0043] like Figures 1 to 2As shown, a pulling assembly 4 is provided inside the liquid storage tube 1. The pulling assembly 4 is used to pull the needle 3. The pulling assembly 4 includes a connecting frame 401 fixedly connected to the upper end of the needle 3. A rotating plate 108 is rotatably connected inside the liquid storage tube 1. The top end of the connecting frame 401 passes through the center of the rotating plate 108 and is coaxially arranged with it. The top end of the push handle 107 passes through the rotating plate 108 and then through the top wall of the liquid storage tube 1 and extends to the outside of the liquid storage tube 1. The push handle 107 is slidably connected to the rotating plate 108. The bottom end of the push handle 107 is installed on the piston block 101. The piston block 101 is slidably connected inside the liquid storage tube 1. When the piston block 101 moves, it drives the needle 3 to move through the connecting frame 401. The lower part of the connecting frame 401 passes through the piston block 101 and extends to the bottom of the piston block 101. The piston block 101 and the connecting frame 401 are coaxially arranged, and a sealing gasket 106 is embedded in the contact part between the piston block 101 and the connecting frame 401. A sealing gasket 106 is also embedded in the contact part between the rotating plate 108 and the push handle 107. A sealing gasket 106 is also embedded in the contact part between the rotating plate 108 and the connecting frame 401.

[0044] Multiple connecting rods 402 are fixedly installed on the top outer wall of the connecting frame 401. The connecting rods 402 extend through the upper side wall of the liquid storage tube 1 to its outside. A pressing plate 403 is fixedly installed at one end of the connecting rod 402 outside the liquid storage tube 1. A fixing plate 104 is fixedly installed on the outer wall of the liquid storage tube 1 at a position directly below the pressing plate 403. A compression spring 105 is provided between the fixing plate 104 and the pressing plate 403. A sliding groove 112 is opened through the upper outer wall of the liquid storage tube 1. The connecting rod 402 passes through the sliding groove 112 and is slidably connected to the sliding groove 112. The sliding groove 112 is located above the rotating plate 108. The elastic force of the compression spring 105 on the pressing plate 403 can make the pressing plate 403 and the connecting rod 402 rise a certain distance. However, the compression spring 105 cannot move the connecting rod 402 to the uppermost end of the sliding groove 112 by its own elastic force.

[0045] like Figures 5 to 8As shown, the bottom end of the conveying needle 2 has a rounded corner structure, and multiple openings 202 are formed through the outer wall of the bottom end of the conveying needle 2. A push rod 203 is slidably installed inside the opening 202. The end of the push rod 203 away from the center of the conveying needle 2 has a hemispherical structure. A pressure block 204 is fixedly installed at the end of the push rod 203 inside the conveying needle 2. Multiple extrusion frames 303 are fixedly installed inside the top of the tip needle 3, and the extrusion frames 303 are all inclined. The upper ends of the multiple extrusion frames 303 are fixedly connected to each other. The pressure block 204 has a hemispherical structure, and the diameter of the pressure block 204 is larger than the diameter of the push rod 203. A slot 302 is formed on the outer wall of the top of the tip needle 3 at a position corresponding to the push rod 203. The number of slots 302 is equal to the number of push rods 203. The push rod 203 passes through the corresponding slot 302 and through the opening 202. The bottom end of each extrusion frame 303 is connected to the inner bottom wall of the corresponding slot 302. The number of slots 302 is equal to the number of extrusion frames 303.

[0046] like Figures 1 to 8 As shown, when the compression spring 105 is stretched to its maximum length, the upper end of the connecting rod 402 is still a certain distance from the top inner wall of the slide groove 112. At this time, the lower end of the needle 3 is located inside the conveying needle 2, and the bottom end of the needle 3 is not higher than the upper end of the push rod 203 and the pressure block 204. The upper end of the piston block 101 is fixedly installed with a push handle 107.

[0047] In use, first press the pressing plate 403, causing it to move relative to the fixed plate 104. At this time, the pressing plate 403 can compress the spring 105. Furthermore, the movement of the pressing plate 403 can drive the connecting rod 402 to move along the slide groove 112. When the connecting rod 402 moves, it can drive the connecting frame 401 to move. When the connecting frame 401 moves, it can compress the needle 3, causing the needle 3 to move relative to the conveying needle 2. At this time, the needle 3 can extend from inside the conveying needle 2. Then, the operator inserts the needle 3... Insert the needle 2 into the patient's blood vessel until the tip of the delivery needle 2 enters the patient's blood vessel, then release the pressure plate 403. At this time, under the action of the compression spring 105, the pressure plate 403 can move back to the initial position, and through the connecting rod 402 and the connecting frame 401, it drives the needle 3 to move back to the initial position, so that the needle 3 retracts into the delivery needle 2. This can prevent the needle 3 from puncturing the blood vessel a second time when the delivery needle 2 is inserted into the blood vessel, thus preventing the tip of the needle 3 from being outside the blood vessel, and at the same time, it can prevent secondary injury to the patient.

[0048] like Figures 5 to 8As shown, during the ascent of the needle 3, the needle 3 can drive the compression frame 303 to rise. At this time, since the compression frame 303 is set at an angle, it can compress the pressure block 204. Under the action of the decomposed force of the compression force, the pressure block 204 and the push rod 203 can move together, thereby causing the push rod 203 to move along the direction of the opening 202. The push rod 203 and the pressure block 204 can move into the opening 202, allowing the needle 3 to rise without obstruction. After the push rod 203 moves, it can extend around the delivery needle 2 to support the inner wall of the patient's blood vessel, preventing the end of the delivery needle 2 from scraping against the inner wall of the blood vessel and causing injury to the patient. The hemispherical push rod 203 can effectively reduce the friction between the needle and the inner wall of the blood vessel, reducing the harm to the patient.

[0049] When the pressure block 204 moves the push rod 203 a certain distance, the pressure block 204 will be blocked by the inner wall of the opening 202 and will no longer move. When the needle 3 rises to the top, the bottom of the needle 3 will no longer contact the pressure block 204. At this time, under the elasticity of the blood vessel itself, it can squeeze the end of the push rod 203, causing the push rod 203 to move into the delivery needle 2.

[0050] like Figures 1 to 4 As shown, an air inlet 109 is provided through one side of the upper end of the rotating plate 108. A stop block 110 is fixedly installed on one side of the inner wall of the liquid storage tube 1 at a position corresponding to the air inlet 109. An arc groove 111 is provided on the upper end of the stop block 110. The width of the arc groove 111 gradually decreases from one side to the other.

[0051] By rotating the push handle 107, the operator can rotate the piston block 101 and the rotating plate 108 by a certain angle. When the rotating plate 108 rotates, it can move relative to the stop block 110, thereby rotating relative to the arc groove 111 on the stop block 110. At this time, the air inlet 109 on the rotating plate 108 will correspond to different positions of the arc groove 111. Thus, when the push handle 107 is pushed to lower the piston block 101, the air flow into the liquid storage tube 1 is controlled. This allows the operator to control the speed of liquid injection and avoid discomfort to the patient caused by excessive injection speed. At the same time, the operator can select the appropriate air intake speed according to the patient's age to control the appropriate injection speed.

[0052] A magnet 404 is embedded in the upper end of the connecting frame 401. A handle is installed at the top of the push handle 107. An extension rod 113 is installed at the bottom end of the handle. The bottom end of the extension rod 113 penetrates the top wall of the liquid storage tube 1 and is slidably connected to the liquid storage tube 1. A magnet 404 is embedded in the bottom end of the extension rod 113, and the magnet 404 on the connecting frame 401 and the magnet 404 on the extension rod 113 attract each other. The reservoir tube 1 is filled with contrast agent or saline solution. When the push handle 107 is continuously pushed downwards to move the contrast agent or saline solution, the push handle 107 can drive the extension rod 113 to move, so that the lower end of the extension rod 113 gradually approaches the upper end of the connecting frame 401. After the extension rod 113 descends to the lowest point, the magnet 404 on the extension rod 113 can attract the magnet 404 on the connecting frame 401, so that the connecting frame 401 continues to rise a certain distance. At this time, the connecting frame 401 can drive the needle 3 to rise a certain distance. At this time, the lower end of the needle 3 is located above the top rod 203. When the pressure band is removed, the blood vessel contracts under its own elasticity, which can push the top rod 203 to move into the delivery needle 2. After the top rod 203 moves into the delivery needle 2, it can block the lower end of the needle 3, preventing the needle 3 from slipping out of the delivery needle 2. At the same time, it can prevent the needle 3 from sticking out of the delivery needle 2 and causing injury to the retrieval personnel when the equipment shakes or vibrates.

[0053] The workflow of the technical solution of this invention is as follows:

[0054] In use, first press the pressure plate 403 to extend the needle 3 from the delivery needle 2. Then, use the needle 3 and delivery needle 2 to draw contrast agent or saline from the container. Next, insert the needle 3 into the patient's vein. Once part of the delivery needle 2 has entered the vein, release the pressure plate 403. At this point, the needle 3 will retract into the delivery needle 2 under the action of the compression spring 105, the pressure plate 403, the connecting rod 402, and the connecting bracket 401, preventing secondary damage to the blood vessel during subsequent insertion and ensuring safety during acupuncture. The system is designed to ensure safety. During the process of the needle 3 retracting into the delivery needle 2, the push rod 203 extends out of the opening 202, thereby supporting the blood vessels around the end of the delivery needle 2 and preventing the end of the delivery needle 2 from rubbing against the inner wall of the blood vessel, which could cause damage to the blood vessel. After the injection is completed, the connecting frame 401 will rise a certain distance under the action of the magnet 404. At this time, the lower end of the needle 3 will be higher than the top of the push rod 203 and the uppermost end of the pressure block 204, so that the needle 3 is blocked by the push rod 203, preventing the needle 3 from causing injury to the retrieval personnel during the retrieval process.

[0055] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A rapid injection device for ultrasound contrast agents and saline, comprising a reservoir, characterized in that: A piston block is slidably installed inside the liquid storage tube. An installation head is fixedly installed at the lower end of the liquid storage tube. An outlet is opened at the lower end of the installation head and communicates with the inside of the liquid storage tube. A delivery needle is installed at the lower end of the installation head. A sharp needle is slidably installed inside the bottom end of the delivery needle. A groove is opened on the inner wall of the delivery needle. A protrusion is opened on the upper side of the outer wall of the sharp needle at a position corresponding to the groove. The protrusion slides inside the groove. The liquid storage tube is equipped with a pulling component inside. The pulling component is used to pull the needle. The pulling component includes a connecting frame fixedly connected to the upper end of the needle. Multiple connecting rods are fixedly installed on the outer wall of the top of the connecting frame. The connecting rods extend through the outer wall of the liquid storage tube to the outside of the liquid storage tube. A pressing plate is fixedly installed at one end of the connecting rod located outside the liquid storage tube. The lower end of the delivery needle has a rounded corner structure, and multiple openings are provided through the lower outer wall of the delivery needle. A push rod is slidably installed inside the openings, and the end of the push rod away from the center of the delivery needle has a hemispherical structure. A pressure block is fixedly installed at one end of the push rod inside the delivery needle. The pressure block has a hemispherical structure and its diameter is larger than that of the push rod. Multiple slots are opened on the outer wall of the needle corresponding to the position of the push rod. Each push rod passes through and is slidably connected in each corresponding slot. Multiple extrusion frames are fixedly installed inside the upper side of the needle, and the extrusion frames are all inclined. The upper ends of the multiple extrusion frames are fixedly connected to each other, and the bottom end of each extrusion frame is connected to the inner bottom wall of each corresponding slot. The number of extrusion frames is equal to the number of slots.

2. The rapid injection device for ultrasound contrast agents and saline according to claim 1, characterized in that: A fixing plate is installed on the outer wall of the liquid storage tube and below the pressing plate, and a compression spring is provided between the fixing plate and the pressing plate.

3. The rapid injection device for ultrasound contrast agents and saline according to claim 2, characterized in that: The connecting frame extends through the piston block to the lower side of the piston block. The piston block and the connecting frame are coaxially arranged, and a sealing gasket is embedded in the contact part between the piston block and the connecting frame.

4. The rapid injection device for ultrasound contrast agents and saline according to claim 1, characterized in that: A push handle is fixedly installed on the upper end of the piston block. The top of the push handle extends through the top wall of the liquid storage tube to the outside of the liquid storage tube. A rotating plate is rotatably connected to the upper part of the inside of the liquid storage tube. The push handle extends through the rotating plate to the lower side of the rotating plate. The push handle is slidably connected to the rotating plate. A sealing gasket is embedded at the contact point between the rotating plate and the push handle. The connecting frame passes through the center of the rotating plate and is coaxially arranged with the rotating plate. A sealing gasket is embedded at the contact point between the rotating plate and the connecting frame.

5. The rapid injection device for ultrasound contrast agents and saline according to claim 4, characterized in that: An air inlet is provided through one side of the rotating plate, and a stop block is fixedly installed on one side of the inner wall of the liquid storage tube at the position corresponding to the air inlet. An arc-shaped groove is provided on the stop block, and the width of the arc-shaped groove gradually decreases from one side to the other.

6. The rapid injection device for ultrasound contrast agents and saline according to claim 5, characterized in that: A sliding groove is provided through the outer wall of the liquid storage tube, and the connecting rod is slidably connected to the sliding groove. The sliding groove is located on the upper side of the rotating plate.

7. The rapid injection device for ultrasound contrast agents and saline according to claim 6, characterized in that: A magnet is embedded at the top of the connecting frame, a handle is installed at the top of the push handle, and an extension rod is provided at the bottom of the handle. The bottom end of the extension rod penetrates the top wall of the liquid storage tube and is slidably connected to the liquid storage tube. A magnet is embedded at the bottom of the extension rod, and the magnet on the connecting frame and the magnet on the extension rod attract each other.

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