Syringe assembly, high pressure injection device, high pressure injection system and control method thereof

Abstract

The application relates to an injection tube assembly, a high-pressure injection device, a high-pressure injection system and a control method thereof. The syringe of the injection tube assembly is installed on an injection installation position of the high-pressure injection device, the liquid injection tube group is installed on a liquid injection installation position, the liquid discharge tube group is installed on a liquid discharge installation position, and the exhaust bag is installed in the installation groove. The boost driving mechanism drives the piston to move backward in the injection cylinder, and the liquid medicine is sucked into the injection cylinder through the first pipeline of the liquid injection tube group. The boost driving mechanism drives the piston to move forward in the injection cylinder, and the liquid medicine in the injection cylinder is pushed into the exhaust bag through the second pipeline. After the liquid medicine enters the exhaust bag, the liquid medicine sinks due to gravity and boost pressure and is discharged through the liquid discharge tube, and the bubbles float to the space above the liquid medicine. Even during the liquid medicine injection process, the bubbles can be prevented from being pushed into the human body in the exhaust bag, the continuity of the injection process is guaranteed, the requirement for the structure air tightness and stability is reduced, and the reliability during use is ensured.

Description

Technical Field

[0001] This application relates to the field of syringe technology, and in particular to syringe tubing assemblies, high-pressure injection devices, high-pressure injection systems and control methods thereof. Background Technology

[0002] In the fields of medical diagnosis and surgical treatment, such as interventional therapy, tumor treatment, and nuclear medicine isotope injection, imaging technologies such as CT scans, angiography, and MRI scans have become indispensable diagnostic and treatment tools. To achieve precise visualization of lesions, a high-pressure injector is often needed to deliver contrast agents into the patient's body to obtain enhanced images of specific areas. However, during the process of drawing the agent into the high-pressure injector, air or gas bubbles can easily adhere to the inner surface of the tubing or injector. For example, during angiography, air injection into veins or arteries can lead to air embolism; even if the amount of air is insufficient to cause air embolism, it can still cause imaging artifacts, reducing the diagnostic effectiveness of the imaging.

[0003] Currently, relevant patented technologies exist to address this problem. For example, patent CN117379633A discloses a high-pressure injection system, a dressing change method, and a bubble removal method. This method creates negative pressure by controlling the piston rod to move backward, then opens the outlet and controls the piston rod to move forward to expel gas. However, if gas is detected during the injection process, the injection must be stopped; this method cannot achieve real-time bubble removal during injection.

[0004] Patent CN112261959A describes a method for removing gas from a reservoir, proposing to generate a vacuum by driving a piston to move within the fluid reservoir to expel gas bubbles, and to install a vibrator on the fluid reservoir to assist in venting. However, this method places high demands on the airtightness and stability of the system structure. It is evident that traditional bubble removal techniques still have shortcomings, and a more reliable bubble removal technology suitable for injection processes is urgently needed. Summary of the Invention

[0005] Therefore, it is necessary to provide a more reliable injection tube assembly, a high-pressure injection device, a high-pressure injection system, and a control method thereof to address the above problems and facilitate the removal of air bubbles.

[0006] An injection tube assembly is used in a high-pressure injection device. The injection tube assembly includes a syringe, an injection tube assembly, and a drain tube assembly. The syringe includes an injection barrel and a piston, the piston being movably disposed within the injection barrel, and a flow port being formed on one side of the injection barrel. The injection tube assembly includes a first tube connected to the flow port of the injection barrel. The drain tube assembly includes a second tube, an air vent, and a drain tube. One end of the second tube is connected to the flow port of the injection barrel, and the other end is connected to the air vent. The drain tube is connected to the bottom wall of the air vent.

[0007] In one embodiment, the drain tube assembly further includes a magnetic ball, and a receiving cavity is formed within the vent bladder. The magnetic ball is disposed within the receiving cavity, and the size of the magnetic ball is larger than the inner diameter of the drain tube. The vent bladder is used to be installed in the mounting slot of the high-pressure injection device and positioned opposite to the electromagnetic drive mechanism. The electromagnetic drive mechanism is controlled to control the movement of the magnetic ball within the receiving cavity.

[0008] In one embodiment, the number of syringes is at least two, and the syringes are arranged side by side with intervals. The number of injection tubing groups is the same as the number of syringes, and each injection tubing group is connected to a corresponding syringe. The drainage tubing group also includes a collection line. The number of second lines is the same as the number of syringes. One end of each second line is connected to the flow port of a syringe, and the other end is connected to the collection line. The collection line is connected to the air bladder.

[0009] In one embodiment, the injection tubing assembly further includes a drip chamber and a first control valve. The first tubing is connected to the flow port of the syringe via the first control valve. The first control valve is used to control the unidirectional flow of liquid from the first tubing to the syringe. The end of the first tubing away from the syringe is connected to the bottom wall of the drip chamber.

[0010] In one embodiment, the injection tube assembly further includes a pressure transmitter disposed on the drain tube, the pressure transmitter being used to transmit the liquid pressure in the drain tube to a pressure detector.

[0011] In one embodiment, the injection tube assembly further includes a particle filter disposed on the drain tube.

[0012] A high-pressure injection device includes a body and a booster drive mechanism. The body has an injection mounting position, a liquid injection mounting position, and a liquid discharge mounting position. The injection mounting position is used to install a syringe. The liquid injection mounting position is located above the injection mounting position and is used to install a liquid injection tube assembly. The liquid discharge mounting position has an installation groove for installing a liquid discharge tube assembly, so that an air bladder is installed in the installation groove. The booster drive mechanism is installed at the injection mounting position of the body and is used to drive the piston of the syringe to move within the injection barrel.

[0013] In one embodiment, the high-pressure injection device further includes an electromagnetic drive mechanism mounted on the body and located at the mounting slot, the electromagnetic drive mechanism being controlled to control the movement of a magnetic ball within the exhaust bladder.

[0014] In one embodiment, the electromagnetic drive mechanism includes at least two solenoid valves, which are spaced apart on the body around the mounting slot, and the two solenoid valves can be activated alternately.

[0015] In one embodiment, the electromagnetic drive mechanism includes three coils, three iron cores, an electrical control unit, and a mounting shell. The three coils are respectively wound around the three iron cores. The three iron cores are spaced apart in the mounting shell around the mounting groove. All three coils are connected to the electrical control unit, which is controlled to connect three-phase AC power.

[0016] In one embodiment, the high-pressure injection device further includes a liquid level detector disposed in the mounting groove. The liquid level detector is used to detect the liquid level in the exhaust bladder, and the liquid level detector is electrically connected to the electromagnetic drive mechanism, which is used to control operation based on the detection result of the liquid level detector.

[0017] In one embodiment, the high-pressure injection device further includes a first bubble detector and a second bubble detector. The first bubble detector is disposed on the injection mounting position and is used to detect bubbles in the injection tube assembly. The second bubble detector is disposed on the drainage mounting position and located behind the mounting groove. The second bubble detector is used to detect bubbles in the drainage tube.

[0018] In one embodiment, the high-pressure injection device further includes a shut-off valve disposed on the drain mounting position and located behind the second bubble detector, the shut-off valve being used to control the flow or shut-off of the drain pipe.

[0019] In one embodiment, the high-pressure injection device further includes a pressure detector disposed on the drain mounting position and located behind the mounting groove, the pressure detector being used to detect the liquid pressure in the drain pipe.

[0020] A high-pressure injection system, the high-pressure injection system comprising the injection tube assembly as described above and the high-pressure injection device as described above.

[0021] In use, the aforementioned injection tubing assembly, high-pressure injection device, and high-pressure injection system are assembled by installing the injection tubing assembly onto the high-pressure injection device, with the syringe mounted in the injection mounting position, the injection tubing assembly mounted in the injection mounting position, and the drainage tubing assembly mounted in the drainage mounting position, ensuring the vent bladder is installed in the mounting slot. The booster drive mechanism is activated, driving the piston to move backward within the injection barrel, drawing the medication into the barrel through the first tubing of the injection tubing assembly. Then, the booster drive mechanism drives the piston forward within the injection barrel, pushing the medication into the vent bladder through the second tubing. After entering the vent bladder, the medication sinks due to gravity and booster pressure and is discharged through the drainage tubing. Air bubbles generated during this process rise to the space above the medication, effectively preventing them from being pushed into the body. This reduces medical risks such as air embolism and imaging artifacts caused by air bubbles, ensuring patient safety and the accuracy of diagnosis and treatment. Furthermore, even if air bubbles are generated inside the syringe during drug injection, the aforementioned high-pressure injection system can promptly expel them through the air bladder, eliminating the need to stop the injection process due to the discovery of air bubbles, as is the case with traditional techniques. This ensures the continuity of the injection process, improves medical efficiency, and reduces patient discomfort and potential risks caused by injection interruptions. Simultaneously, this high-pressure injection system eliminates the need for vacuuming and vibration-based venting methods, reducing the requirements for system airtightness and stability, simplifying the system structure, lowering manufacturing and maintenance costs, and ensuring system reliability during long-term use.

[0022] A control method for a high-pressure injection system, applied in the high-pressure injection system described above, the control method comprising:

[0023] The first pipeline is shut off, and the booster drive mechanism is activated to move the piston inside the syringe so that the liquid medicine flows from the syringe into the vent bladder.

[0024] The electromagnetic drive mechanism is activated to drive the magnetic ball to agitate the liquid in the exhaust bladder;

[0025] Obtain the liquid level inside the vent bladder;

[0026] When the liquid level inside the exhaust bladder is lower than the preset level, the electromagnetic drive mechanism is controlled to stop driving the magnetic ball, so that the magnetic ball falls onto the bottom wall of the exhaust bladder and blocks the drain pipe. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown in the drawings only as examples and not necessarily to actual scale.

[0030] Figure 1 This is a schematic diagram of the high-pressure injection system in one embodiment.

[0031] Figure 2 for Figure 1 The diagram shown is a structural schematic of the high-pressure injection system, omitting the main body.

[0032] Figure 3 for Figure 2 A partial structural diagram of the high-pressure injection device.

[0033] Figure 4 This is a front sectional view of the exhaust bladder and electromagnetic drive mechanism in one embodiment.

[0034] Figure 5 for Figure 4 The diagram shows a top sectional view of the exhaust bladder and electromagnetic drive mechanism.

[0035] Figure 6 This is a flowchart of a control method for a high-pressure injection system in one embodiment.

[0036] Explanation of reference numerals in the attached figures:

[0037] High-pressure injection system 1; injection tube assembly 10; syringe 110; injection tube assembly 120; first pipeline 121; drip chamber 122; first control valve 123; puncture device 124; drainage tube assembly 130; second pipeline 131; air bladder 132; drainage tube 133; air vent valve 134; magnetic ball 135; receiving cavity 136; collection pipeline 137; docking joint 138; pressure transmission component 140; particle filter 150; high-pressure injection device 20; body 210; booster drive mechanism 220; electromagnetic drive mechanism 230; solenoid valve 231; coil 232; iron core 233; mounting shell 234; liquid level detector 240; first liquid level sensor 242; second liquid level sensor 244; first bubble detector 250; second bubble detector 260; shut-off valve 270. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] See Figures 1 to 3 According to one embodiment of this application, a high-pressure injection system 1 includes an injection tube assembly 10 and a high-pressure injection device 20. The injection tube assembly 10 is installed on the high-pressure injection device 20 to control the injection of the drug solution. Specifically, the injection tube assembly 10 includes a syringe 110, an injection tube assembly 120, and a drain tube assembly 130. The syringe 110 includes an injection barrel and a piston, with the piston movably disposed inside the injection barrel, and a flow port formed on one side of the injection barrel. The injection tube assembly 120 includes a first tube 121 connected to the flow port of the injection barrel. The drain tube assembly 130 includes a second tube 131, an air vent 132, and a drain tube 133. One end of the second tube 131 is connected to the flow port of the injection barrel, and the other end is connected to the air vent 132. The drain tube 133 is connected to the bottom wall of the air vent 132.

[0040] In use, the piston moves backward within the syringe, drawing the medication into the syringe through the first line 121 of the injection tubing assembly 120. Then, the piston moves forward within the syringe, pushing the medication through the second line 131 into the vent bladder 132. After entering the vent bladder 132, the medication sinks due to gravity and the boosting pressure and is discharged through the drain line 133. Air bubbles generated during this process rise to the space above the medication, effectively preventing them from being pushed into the body. This reduces medical risks caused by air bubbles, such as air embolism and imaging artifacts, ensuring patient safety and the accuracy of diagnosis and treatment.

[0041] In this embodiment, the end of the second conduit 131 furthest from the syringe is connected to the top wall of the vent bladder 132, so that as the liquid medicine flows into the vent bladder 132 through the second conduit 131, gas and liquid medicine are effectively separated, and the gas is concentrated above the vent bladder 132. In other embodiments, the end of the second conduit 131 furthest from the syringe may also be connected to the side wall of the vent bladder 132, so that the liquid medicine enters the vent bladder 132 from the side wall.

[0042] In one embodiment, an exhaust port is provided on the top wall of the exhaust bladder 132, and an exhaust pipe is connected to the exhaust port. An exhaust valve 134 is provided on the exhaust pipe, or the exhaust valve 134 is directly provided at the exhaust port. The exhaust valve 134 can control the discharge of gas from the exhaust bladder 132 or close it to maintain the infusion pressure within the exhaust bladder 132. Specifically, the exhaust valve 134 can be a manually operated valve, allowing manual control of the exhaust of the exhaust bladder 132. For example, the exhaust valve 134 can be a stopcock structure, which is screwed onto the exhaust port of the exhaust bladder 132, allowing the exhaust port to be opened or closed by turning the stopcock structure. In other embodiments, the exhaust valve 134 can be a control valve provided on the high-pressure injection device 20, controlling the exhaust of the exhaust bladder 132 by controlling the operation of the control valve. For example, the control valve can be a push structure, which opens or closes the exhaust port by squeezing and pushing against the pipe at the exhaust port of the exhaust bladder 132.

[0043] See Figure 3 and Figure 4 In one embodiment, the drainage tube assembly 130 further includes a magnetic ball 135. A receiving cavity 136 is formed within the exhaust bladder 132, and the magnetic ball 135 is disposed within the receiving cavity 136, with the size of the magnetic ball 135 being larger than the inner diameter of the drainage tube 133. By setting a controllable magnetic field on the outer wall of the exhaust bladder 132, the movement of the magnetic ball 135 within the receiving cavity 136 can be flexibly controlled, effectively agitating the medication within the exhaust bladder 132, resulting in more uniform mixing of the medication, ensuring uniform composition of the medication injected into the patient, and improving the stability of the treatment effect. Simultaneously, during agitation, the magnetic ball 135 can effectively break up tiny air bubbles attached to the inner wall of the exhaust bladder 132 and dispersed in the medication. This active agitation and venting method can further reduce the air bubble content in the medication, minimizing the risk of air embolism and imaging artifacts caused by air bubbles. After the medication is injected, the magnetic ball 135 falls to the bottom wall of the air bladder 132 under its own weight and is located at the connection between the drain tube 133 and the air bladder 132, forming a sealing structure. This effectively prevents the backflow of the medication, further improving the safety and reliability of the medication injection process, reducing potential risks in medical operations, and providing medical staff with a more efficient and safer injection aid.

[0044] In this embodiment, the cross-sectional dimension of the portion of the receiving cavity 136 near the drain pipe 133 tends to decrease towards the drain pipe 133. That is, the portion of the receiving cavity 136 near the drain pipe 133 has a conical shape, so that the magnetic ball 135 can fall to the connection between the drain pipe 133 and the receiving cavity 136 under its own weight, thereby sealing the drain pipe 133.

[0045] In one embodiment, the number of syringes 110 is at least two, arranged side-by-side with intervals between them. The number of injection tubing assemblies 120 is the same as the number of syringes 110, and each injection tubing assembly 120 corresponds to one syringe 110 connected to it. The drainage tubing assembly 130 also includes a conduit 137. The number of second tubing 131 is the same as the number of syringes 110. One end of each second tubing 131 is connected to the flow port of a syringe, and the other end is connected to the conduit 137, which is connected to the exhaust bladder 132. The configuration of multiple syringes 110 enables the system to simultaneously inject at least two medications, meeting the needs of mixing different medications in complex diagnostic and treatment scenarios. Each syringe 110 corresponds to an independent injection tubing assembly 120, which can accurately draw different medications, facilitating medical personnel to precisely control the dosage of each medication according to the diagnostic and treatment needs, and avoiding dosage errors that could affect the treatment effect. The medication solutions from different syringes 110 are injected into the main tubing 137 through their respective second tubing 131, and finally flow into the deflation bladder 132. Inside the deflation bladder 132, a magnetic ball 135 is used to ensure that the medication solution is fully mixed while expelling air bubbles, ensuring that the composition of the medication solution injected into the patient is uniform and stable, thus guaranteeing the consistency and reliability of the treatment effect.

[0046] In this embodiment, three syringes 110 are used, spaced apart, to simultaneously mix three different medications. In other embodiments, two syringes 110 can be used to simultaneously mix two different medications.

[0047] In one embodiment, the second conduit 131 is inclined relative to the main conduit 137, and the inclination direction of the second conduit 131 is from the syringe 110 to the exhaust bladder 132. Specifically, the second conduit 131 is inclined downwards along the direction from the syringe 110 to the exhaust bladder 132, which reduces the flow resistance of the drug solution in the conduit, allowing the drug solution to flow more smoothly from the syringe 110 into the main conduit 137 and the exhaust bladder 132, reducing energy loss during delivery. At the same time, it avoids air bubbles from accumulating in bends or dead corners of the conduit, further improving the exhaust efficiency of the system and reducing the risk of air bubbles entering the human body.

[0048] In one embodiment, the end of the drain tube 133 of the drain tube assembly 130 away from the air bladder 132 is also connected to a docking connector 138 for connecting to the patient's tubing.

[0049] See Figure 2 and Figure 3In one embodiment, the injection tube assembly 10 further includes a pressure transmitter 140, which is disposed on the drain tube 133 and is used to transmit the liquid pressure in the drain tube 133 to the pressure detector. The pressure transmitter 140 facilitates real-time monitoring of the infusion pressure in the drain tube 133 to meet usage requirements.

[0050] In one embodiment, the injection tube assembly 10 further includes a particle filter 150, which is disposed on the drain pipe 133. By providing the particle filter 150, the drug solution can be filtered, improving the purity of the drug solution and thus enhancing its safety.

[0051] See Figure 2 and Figure 3 In one embodiment, the injection tubing assembly 120 further includes a dripping funnel 122, with the end of the first tubing 121 furthest from the syringe 110 connected to the bottom wall of the dripping funnel 122. During use, the medication first enters the dripping funnel 122 to release air, then flows through the first tubing 121 into the syringe 110. Because the dripping funnel 122 has a containment space, when the medication flows into it, air bubbles rise to the top of the funnel due to buoyancy and accumulate, while the medication flows out from the bottom of the first tubing 121, reducing the risk of bubble formation. Simultaneously, pressure fluctuations may occur during medication aspiration, and the dripping funnel 122 can act as a pressure buffer chamber, absorbing and dispersing pressure changes. When the piston moves rapidly backward, the medication in the dripping funnel 122 can temporarily replenish the negative pressure created by aspiration, reducing pressure impact on the syringe and tubing, and lowering the risk of tubing rupture or loosening of connectors.

[0052] Specifically, the injection tubing assembly 120 also includes a first control valve 123. The first tubing 121 is connected to the flow port of the syringe via the first control valve 123. The first control valve 123 controls the unidirectional flow of liquid from the first tubing 121 to the syringe. In other embodiments, the first control valve 123 controls the opening and closing of liquid from the first tubing 121. When the liquid is drawn into the syringe and needs to be pushed out through the drain tubing assembly 130, the first control valve 123 prevents the liquid from being pushed back into the first tubing 121. In this embodiment, the first control valve 123 can be a one-way valve structure integrated on the first tubing 121. Of course, in other embodiments, the first control valve 123 can also be located on the high-pressure injection device 20, and the first tubing 121 can be opened and closed by pushing against it.

[0053] Furthermore, the injection tubing assembly 120 also includes a puncture device 124, which is connected to the top wall of the drip chamber 122. By providing the puncture device 124, it is easy to puncture the medicine bottle, thereby enabling the medicine to be delivered to the syringe 110 through the drip chamber 122 and the first tubing 121.

[0054] In this embodiment, the injection tube assembly is a consumable and can be removed from the high-pressure injection device 20 after use to replace it with a new injection tube assembly.

[0055] See Figure 1 and Figure 2 In one embodiment, the high-pressure injection device 20 includes a body 210 and a booster drive mechanism 220. The body 210 has an injection mounting position, a liquid injection mounting position, and a liquid discharge mounting position. The injection mounting position is used to mount a syringe 110. The liquid injection mounting position is located above the injection mounting position and is used to mount a liquid injection tube assembly 120. The liquid discharge mounting position has a mounting groove for mounting a liquid discharge tube assembly 130, so that an exhaust bladder 132 is mounted in the mounting groove. The booster drive mechanism 220 is mounted at the injection mounting position of the body 210 and is used to drive the piston of the syringe 110 to move within the injection barrel.

[0056] In use, the injection tube assembly 10 is installed on the high-pressure injection device 20, so that the syringe 110 is installed in the injection mounting position, the injection tube assembly 120 is installed in the injection mounting position, the drainage tube assembly 130 is installed in the drainage mounting position, and the vent bladder 132 is installed in the mounting groove. The booster drive mechanism 220 is activated to drive the piston to move backward inside the injection barrel, drawing the medication into the injection barrel through the first tube 121 of the injection tube assembly 120. Then, the booster drive mechanism 220 drives the piston to move forward inside the injection barrel, pushing the medication into the vent bladder 132 through the second tube 131. After entering the vent bladder 132, the medication sinks due to gravity and booster pressure and is discharged through the drainage tube 133. Air bubbles generated during the pushing process rise to the space above the medication, effectively preventing air bubbles from being pushed into the body. Furthermore, even if air bubbles are generated inside the syringe during drug injection, the aforementioned high-pressure injection system 1 can be promptly expelled through the exhaust bladder 132, eliminating the need to stop the injection process due to the discovery of air bubbles as required by traditional techniques. This ensures the continuity of the injection process, improves medical efficiency, and reduces discomfort and potential risks to patients caused by injection interruptions. Simultaneously, this high-pressure injection system 1 eliminates the need for vacuuming and vibration-based exhaust methods, reducing the requirements for system airtightness and stability, simplifying the system structure, lowering manufacturing and maintenance costs, and ensuring the system's reliability during long-term use.

[0057] See Figure 2 and Figure 3In one embodiment, the high-pressure injection device 20 further includes an electromagnetic drive mechanism 230, which is mounted on the body 210 and located in the mounting slot. The electromagnetic drive mechanism 230 is controlled to control the movement of the magnetic ball 135 within the exhaust bladder 132. Specifically, the exhaust bladder 132 is installed in the mounting slot of the high-pressure injection device 20 and positioned opposite the electromagnetic drive mechanism 230. When the medication is injected into the exhaust bladder 132, the electromagnetic drive mechanism 230 is activated to control the movement of the magnetic ball 135 within the exhaust bladder 132, achieving the purpose of venting and agitating the medication. The electromagnetic drive mechanism 230 remotely drives the magnetic ball 135 through a magnetic field, eliminating the need for mechanical transmission components to directly contact the medication or the interior of the exhaust bladder 132. This non-contact method of driving the magnetic ball 135 maintains the integrity and airtightness of the injection tube assembly.

[0058] like Figure 2 and Figure 3 As shown, in one embodiment, the electromagnetic drive mechanism 230 includes at least two solenoid valves 231. The two solenoid valves 231 are spaced apart on the body 210 around the mounting groove, and can be activated alternately. The at least two solenoid valves 231 can form a dynamically changing magnetic field distribution around the exhaust bladder 132. Compared to the fixed magnetic field of a single solenoid valve 231, the magnetic ball 135 driven by the dynamic magnetic field can cover a larger agitation range, effectively breaking up air bubbles attached to various locations on the inner wall of the exhaust bladder 132, and accelerating the upward convergence of tiny air bubbles in the liquid, thus improving the efficiency of bubble removal. The alternately activated solenoid valves 231 cause the magnetic ball 135 to produce complex motion trajectories, creating a multi-dimensional agitation effect and promoting thorough mixing of different component liquids. In this embodiment, the number of solenoid valves 231 is two, and the two solenoid valves 231 are arranged opposite each other. In other embodiments, the number of solenoid valves 231 can also be three, and the three solenoid valves 231 are spaced apart around the mounting groove.

[0059] like Figure 4 and Figure 5As shown, in another embodiment, the electromagnetic drive mechanism 230 includes three coils 232, three iron cores 233, an electrical control unit, and a mounting shell 234. The three coils 232 are respectively wound around the three iron cores 233, and the three iron cores 233 are spaced apart within the mounting shell 234 around the mounting groove. All three coils 232 are connected to the electrical control unit, which is controlled to connect three-phase alternating current. Specifically, the electromagnetic drive mechanism 230 covers at least half or more of the area of ​​the mounting groove. The electrical control unit can precisely control the strength, direction, and rate of change of the magnetic field by adjusting the frequency, phase difference, and voltage amplitude of the three-phase alternating current, so that the trajectory, speed, and force of the magnetic ball 135 can be dynamically adjusted according to the characteristics of the drug solution, such as viscosity and bubble content, and the needs of diagnosis and treatment. For example, for high-viscosity contrast agents, the magnetic field strength and rotation speed can be increased to improve the efficiency of bubble removal; for sensitive drugs, the agitation intensity can be reduced to avoid damage to drug activity. The three-phase AC driven electromagnetic drive mechanism 230 has higher energy conversion efficiency, which can reduce power loss and simplify the control logic of the electromagnetic drive mechanism 230. The magnetic ball 135 can be precisely controlled by simply adjusting the three-phase power supply parameters.

[0060] Specifically, an arc-shaped cavity is formed inside the mounting shell 234, and the coil 232 and the iron core 233 are both arranged inside the arc-shaped cavity of the mounting shell 234 to facilitate the formation of a changing magnetic field in the circumference of the mounting slot. In other embodiments, the mounting shell 234 can also have other structural shapes, as long as it facilitates the installation and arrangement of the coil 232 and the iron core 233.

[0061] In one embodiment, a heat sink may also be installed on the electromagnetic drive mechanism 230 to reduce the heat generated by the electromagnetic drive mechanism 230 during use, which may affect the operating temperature of the liquid medicine and improve the service life of the electromagnetic drive mechanism 230.

[0062] In other embodiments, the electromagnetic drive mechanism 230 may be of other structural types or other implementations, as long as it can drive the magnetic ball 135 to move within the exhaust bladder 132.

[0063] See Figure 4 In one embodiment, the high-pressure injection device 20 further includes a liquid level detector 240, which is installed in the mounting groove. The liquid level detector 240 is used to detect the liquid level in the exhaust bladder 132, and is electrically connected to the electromagnetic drive mechanism 230. The electromagnetic drive mechanism 230 is used to control the operation based on the detection result of the liquid level detector 240.

[0064] Specifically, the liquid level detector 240 includes a first liquid level sensor 242 and a second liquid level sensor 244. Both the first and second liquid level sensors 242 and 244 are positioned on the side wall of the exhaust bladder 132, with the second liquid level sensor 244 positioned higher than the first liquid level sensor 242. An electromagnetic drive mechanism 230 is located below the second liquid level sensor 244. Through the linkage between the upper and lower positioned first and second liquid level sensors 242 and the electromagnetic drive mechanism 230, fully automatic control of the exhaust process is achieved. Initially, the magnetic ball 135 blocks the drain pipe 133 due to its own weight. The booster drive mechanism 220 drives the syringe 110 to move, pushing the medicine into the exhaust bladder 132. When the medicine level reaches the second liquid level sensor 244, the amount of medicine in the exhaust bladder 132 is sufficient. The electromagnetic drive mechanism 230 is automatically activated, causing the magnetic ball 135 to leave the drain pipe 133 and begin agitating the mixed medicine and venting the air. When the injection is completed or the liquid level drops abnormally, the electromagnetic drive mechanism 230 automatically shuts off when the liquid level drops to the first liquid level sensor 242. The magnetic ball 135 falls back to block the drain pipe 133, effectively preventing the drug solution from continuing to be infused or flowing back into the vent bladder 132. This linkage avoids manual intervention, reduces operational errors, and ensures that the venting process is precisely matched with the drug injection status.

[0065] In this embodiment, the first liquid level sensor 242 and the second liquid level sensor 244 can be ultrasonic liquid level sensors or photoelectric liquid level sensors. Specifically, both the first liquid level sensor 242 and the second liquid level sensor 244 can be ultrasonic liquid level sensors.

[0066] See again Figure 2 and Figure 3 In one embodiment, the high-pressure injection device 20 further includes a first bubble detector 250, which is disposed at the injection mounting position and is used to detect bubbles in the injection tubing assembly 120. Specifically, the first bubble detector 250 can detect bubbles in the first tubing 121, located near the drug inlet, and can monitor bubbles in real time before the drug enters the syringe 110. If the drug aspiration is abnormal, and there is a continuous absence of drug in the first tubing 121, the first bubble detector 250 can make a judgment and promptly trigger an alarm or interrupt the process to prevent the abnormal situation of the drug not being aspirated into the syringe 110 or a large number of bubbles being aspirated into the syringe 110. If only tiny bubbles or a few bubbles are detected in the first tubing 121, the device can still operate normally. In this embodiment, the alarm or interruption process is only triggered when the bubble content detected by the first bubble detector 250 exceeds a set bubble threshold within a preset time.

[0067] In one embodiment, the high-pressure injection device 20 further includes a second air bubble detector 260, which is disposed at the drain mounting position and located behind the mounting groove. The second air bubble detector 260 is used to detect air bubbles in the drain pipe 133. The second air bubble detector 260 can detect air bubbles before the final output of the liquid. When the second air bubble detector 260 detects air bubbles, the injection needs to be paused to ensure safety.

[0068] In one embodiment, the high-pressure injection device 20 further includes a shut-off valve 270, which is disposed at the drain mounting position and located downstream of the second bubble detector 260. The shut-off valve 270 is used to control the flow or stoppage of the drain pipe 133. When the second bubble detector 260 detects bubbles larger than a safety threshold, it can control the shut-off valve 270 to stop the flow in the drain pipe 133, thus stopping the injection and ensuring safety. For example, the shut-off valve 270 can be a stop valve.

[0069] In one embodiment, the high-pressure injection device 20 further includes a pressure detector, which is disposed on the drain mounting position and located behind the mounting groove. The pressure detector is used to detect the liquid pressure in the drain pipe 133. The pressure detector facilitates the detection of the liquid pressure in the drain pipe 133 to ensure the infusion pressure. Specifically, the pressure transmission element 140 of the injection tubing assembly is positioned opposite the pressure detector, so that the pressure detector can detect the pressure in the drain pipe 133 through the pressure transmission element 140.

[0070] In one embodiment, an exhaust port is provided on the top wall of the exhaust bag 132, and an exhaust pipe is provided at the exhaust port. An exhaust valve 134 is provided on the body corresponding to the position of the exhaust pipe. The exhaust valve 134 is electrically connected to a pressure detector and is used to control the opening or closing of the exhaust port according to the sensing data of the pressure detector. By controlling the exhaust valve 134, the exhaust pipe can be connected or cut off, thereby controlling the exhaust of the exhaust bag 132. Specifically, when the pressure detector detects that the pressure exceeds the high safety pressure value, the exhaust valve 134 can be opened to achieve rapid pressure relief and ensure the safety of use. When the pressure detector detects that the pressure is lower than the low safety pressure value, the exhaust valve 134 can be closed to maintain the injection pressure of the injection tube assembly 10. Of course, in other embodiments, the opening size of the exhaust valve 134 can also be dynamically adjusted according to the monitored pressure of the drainage tube 133 to adjust or stabilize the infusion pressure of the drainage tube 133.

[0071] like Figure 2 , Figure 4 and Figure 6 As shown, in one embodiment, a control method for a high-pressure injection system 1 is provided, comprising the following steps:

[0072] The booster drive mechanism 220 drives the piston to move backward within the syringe barrel to draw in the medication. Specifically, different syringes 110 draw in the corresponding amount of medication according to the set dosage. In this embodiment, if the bubble content in the first tubing 121 exceeds a set bubble threshold within a preset time range, the booster drive mechanism 220 stops driving the piston and triggers an alarm.

[0073] Specifically, if the bubble content in the first pipeline 121 is detected to be greater than the set bubble threshold, for example, greater than 10% by volume, the booster drive mechanism 220 is triggered to push back, so that the gas can be pushed out and then re-vacuumed and the bubble content in the first pipeline 121 is detected. If the bubble content in the first pipeline 121 is detected to be greater than the set bubble threshold twice in a row, the booster drive mechanism 220 is controlled to stop driving the piston to move and an alarm is triggered. At this time, it is necessary to check whether the drug installation and connection are normal.

[0074] Step S1: Control the closure of the first pipeline 121, and activate the booster drive mechanism 220 to drive the piston to move inside the syringe, so that the liquid medicine flows from the syringe into the vent bladder 132. Specifically, control the closure of the first control valve 123, activate the booster drive mechanism 220 to drive the piston to move inside the syringe, so that the liquid medicine flows from the syringe into the vent bladder 132. At this time, open the vent valve 134 of the vent bladder 132 until the liquid medicine in the vent bladder 132 reaches the vent level, and then close the vent valve 134 of the vent bladder 132.

[0075] Step S2: Activate the electromagnetic drive mechanism 230 to drive the magnetic ball 135 to agitate the liquid in the exhaust bladder 132. Specifically, the booster drive mechanism 220 continues to drive the piston to move within the syringe barrel, causing the medication to flow from the syringe barrel into the exhaust bladder 132 and be discharged through the drain pipe 133. At this point, the high-pressure injection system 1 is in standby mode. When the drain pipe 133 is connected to the patient, the electromagnetic drive mechanism 230 is activated again to drive the magnetic ball 135 to agitate the liquid in the exhaust bladder 132.

[0076] Step S3: Obtain the liquid level inside the air bladder 132. Monitor the liquid level inside the air bladder 132 and track the injection progress of the medication. Obtain the liquid level inside the air bladder 132 using the first liquid level sensor 242 and the second liquid level sensor 244.

[0077] Specifically, during the injection process, the air bubble situation in the drain tube 133 is detected. If the air bubble content in the drain tube 133 is found to be greater than the safety threshold, for example, greater than 0.1% by volume, the booster drive mechanism 220 is controlled to stop, and the shut-off valve 270 is controlled to shut off the drain tube 133, thus stopping the injection and ensuring safety.

[0078] Step S4: When the liquid level inside the air bladder 132 is lower than a preset level, the electromagnetic drive mechanism 230 is controlled to stop driving the magnetic ball 135, causing the magnetic ball 135 to fall onto the bottom wall of the air bladder 132 and block the drain pipe 133. When the liquid level inside the air bladder 132 is lower than a preset level, it indicates that the medication injection has been completed or that the medication inside the air bladder 132 is abnormal. The electromagnetic drive mechanism 230 is then controlled to stop operating, causing the magnetic ball 135 to fall and block the drain pipe 133, ensuring the safety of the medication injection.

[0079] Step S5: Obtain the injection pressure during the injection process. When the injection pressure is detected to exceed the high safe pressure value, control the vent valve 134 on the vent bladder 132 to open, so as to quickly release pressure and ensure the safety of use. When the injection pressure is detected to be lower than the low safe pressure value, control the vent valve 134 to close, so as to maintain and increase the injection pressure.

[0080] Of course, in other embodiments, the injection pressure during the injection process is obtained, and the opening size of the exhaust valve 134 is dynamically adjusted according to the monitored injection pressure to achieve the purpose of adjusting or stabilizing the injection pressure.

[0081] In the above control method, during the drug aspiration stage, the first bubble detector 250 monitors the bubble content in the first tubing 121 in real time. If the bubble content exceeds the set bubble threshold, indicating an aspiration abnormality, the piston movement is paused and an alarm is triggered. This reduces the amount of gaseous drug entering the syringe from the source, preventing excessive bubbles in the syringe due to bubble compression and turbulence. During the injection drainage stage, the electromagnetic drive mechanism 230 controls the movement of the magnetic ball 135 within the air bladder 132. This not only breaks up tiny bubbles attached to the bladder wall and in the drug solution, but the continuous agitation of the magnetic ball 135 also ensures that various drugs are fully mixed within the air bladder 132, preventing uneven concentration from affecting the treatment effect. At the drainage tube 133, the second bubble detector 260 detects the bubble situation during the drainage process, capturing residual bubbles in the drained drug solution in real time, further reducing the possibility of bubbles entering the body, reducing the risk of air embolism, and ensuring the safety of the infusion. Furthermore, after the medication in the air bladder 132 has descended and the injection is completed, the magnetic ball 135 blocks the drain tube 133 to prevent backflow, further ensuring the safety of the infusion process.

[0082] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0083] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An injection tube assembly, used in a high-pressure injection device, characterized in that, The injection tube assembly includes: A syringe, comprising a syringe barrel and a piston, the piston being movably disposed within the syringe barrel, and a flow port being formed on one side of the syringe barrel; The injection tubing assembly includes a first tubing connected to the flow port of the syringe; and The drainage tube assembly includes a second tube, an air bladder, a drainage tube, and a magnetic ball. One end of the second tube is connected to the flow port of the syringe, and the other end is connected to the air bladder. The drainage tube is connected to the bottom wall of the air bladder. A receiving cavity is formed inside the air bladder, and the magnetic ball is disposed in the receiving cavity. The size of the magnetic ball is larger than the inner diameter of the drainage tube. The air bladder is used to be installed in the mounting slot of the high-pressure injection device and positioned opposite to the electromagnetic drive mechanism. The electromagnetic drive mechanism is controlled to control the movement of the magnetic ball within the receiving cavity. By setting an electromagnetic drive mechanism that can form a controllable magnetic field on the outer wall of the air bladder, the movement of the magnetic ball within the receiving cavity can be controlled, which can agitate the liquid medicine inside the air bladder and make the liquid medicine mix evenly. During the agitation process, the magnetic ball effectively breaks up the tiny air bubbles attached to the inner wall of the air bladder and dispersed in the liquid medicine. The liquid level detector is installed in the mounting slot. When the injection is completed or the liquid level drops abnormally, the electromagnetic drive mechanism will automatically shut down when the liquid level drops to the first liquid level sensor. The magnetic ball will fall back to block the drain pipe, preventing the liquid from continuing to be infused or flowing back into the air bladder.

2. The injection tube assembly according to claim 1, characterized in that, The number of syringes is at least two, and the syringes are arranged side by side with intervals. The number of injection tube groups is the same as the number of syringes, and each injection tube group is connected to a corresponding syringe. The drainage tube group also includes a collection tube. The number of second tubes is the same as the number of syringes. One end of each second tube is connected to the flow port of a syringe, and the other end is connected to the collection tube. The collection tube is connected to the air bladder.

3. The injection tube assembly according to claim 1 or 2, characterized in that, The injection tubing assembly also includes a drip chamber and a first control valve. The first tubing is connected to the flow port of the syringe via the first control valve. The first control valve is used to control the unidirectional flow of liquid from the first tubing to the syringe. The end of the first tubing away from the syringe is connected to the bottom wall of the drip chamber.

4. The injection tube assembly according to claim 1 or 2, characterized in that, The injection tube assembly further includes a pressure transmitter disposed on the drain tube, the pressure transmitter being used to transmit the liquid pressure within the drain tube to a pressure detector; and / or The injection tube assembly also includes a particle filter disposed on the drain tube.

5. A high-pressure injection device, characterized in that, The high-pressure injection device includes: The body has an injection mounting position, a liquid injection mounting position, and a liquid discharge mounting position. The injection mounting position is used to install a syringe. The liquid injection mounting position is located above the injection mounting position and is used to install a liquid injection tube assembly. The liquid discharge mounting position has an installation groove and is used to install a liquid discharge tube assembly. The liquid discharge tube assembly includes a second tube, an air vent, a liquid discharge tube, and a magnetic ball. One end of the second tube is connected to the flow port of the syringe barrel, and the other end is connected to the air vent. The liquid discharge tube is connected to the bottom wall of the air vent. The air vent is installed in the installation groove and has a receiving cavity. The magnetic ball is disposed in the receiving cavity, and the size of the magnetic ball is larger than the inner diameter of the liquid discharge tube. An electromagnetic drive mechanism is installed on the body and located in the mounting slot, opposite to the exhaust bladder. The electromagnetic drive mechanism is controlled to move the magnetic ball inside the exhaust bladder within the receiving cavity to agitate the medicine liquid inside the exhaust bladder and make the medicine liquid mix evenly. During the agitation process, the magnetic ball effectively breaks up the tiny air bubbles attached to the inner wall of the exhaust bladder and dispersed in the medicine liquid. A booster drive mechanism, installed at the injection mounting position of the machine body, is used to drive the piston of the syringe to move within the syringe barrel; and A liquid level detector is installed in the mounting slot. The liquid level detector is used to detect the liquid level in the exhaust bladder and is electrically connected to the electromagnetic drive mechanism. When the injection is completed or the liquid level drops abnormally, when the liquid level drops to the first liquid level sensor, the electromagnetic drive mechanism is automatically shut off, and the magnetic ball falls back to block the drain pipe to prevent the drug from continuing to be infused or flowing back into the exhaust bladder.

6. The high-pressure injection device according to claim 5, characterized in that, The electromagnetic drive mechanism includes at least two solenoid valves, which are spaced apart on the body around the mounting slot, and the two solenoid valves can be activated alternately; or The electromagnetic drive mechanism includes three coils, three iron cores, an electrical control unit, and a mounting shell. The three coils are respectively wound around the three iron cores. The three iron cores are spaced apart in the mounting shell around the mounting groove. All three coils are connected to the electrical control unit, which is controlled to connect three-phase AC power.

7. The high-pressure injection device according to claim 6, characterized in that, The high-pressure injection device further includes a first bubble detector and a second bubble detector. The first bubble detector is disposed on the injection mounting position and is used to detect bubbles in the injection tube assembly. The second bubble detector is disposed on the drainage mounting position and located behind the mounting groove. The second bubble detector is used to detect bubbles in the drainage tube.

8. The high-pressure injection device according to claim 7, characterized in that, The high-pressure injection device also includes a shut-off valve, which is disposed on the drain installation position and located behind the second bubble detector. The shut-off valve is used to control the flow or shut-off of the drain pipe. The high-pressure injection device also includes a pressure detector, which is installed on the drain mounting position and located behind the mounting groove. The pressure detector is used to detect the liquid pressure in the drain pipe. An exhaust port is provided on the top wall of the exhaust bladder, and an exhaust pipe is provided at the exhaust port. An exhaust valve is provided on the body at the position corresponding to the exhaust pipe. The exhaust valve is electrically connected to the pressure detector and is used to control the exhaust port to open or close according to the sensing data of the pressure detector.

9. A high-pressure injection system, characterized in that, The high-pressure injection system includes the injection tube assembly as described in any one of claims 1-4 and the high-pressure injection device as described in any one of claims 5-8.

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