Injection tube assembly, high-pressure injection device, high-pressure injection system and control method of high-pressure injection system

Abstract

The invention relates to an injection pipe assembly, a high-pressure injection device, a high-pressure injection system and a control method of the high-pressure injection system. An injector of the injection pipe assembly is installed on an injection installation position of the high-pressure injection device, a liquid injection pipe set is installed on a liquid injection installation position, a liquid discharging pipe set is installed on a liquid discharging installation position, and an air discharging bag is installed in an installation groove. The boosting driving mechanism is started to drive the piston to move backwards in the syringe, and the liquid medicine is sucked into the syringe through the first pipeline of the liquid injection pipe set. The boosting driving mechanism drives the piston to move forwards in the syringe, and the liquid medicine in the syringe is pushed into the exhaust bag through the second pipeline. After liquid medicine enters the exhaust bag, the liquid medicine sinks due to gravity and boosting pressure and is discharged through the liquid discharging pipe, bubbles float upwards to the space above the liquid medicine, even in the liquid medicine injection process, the bubbles can be prevented from being pushed into the human body in the exhaust bag, and the continuity of the injection process is guaranteed; and meanwhile, the requirements for air tightness and stability of the structure are lowered, and the reliability in the using process is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of syringes, and in particular to a syringe assembly, a high-pressure injection device, a high-pressure injection system and a control method thereof. Background Art

[0002] In the field of medical diagnosis and surgical treatment, such as interventional therapy, tumor treatment, and nuclear medicine isotope injection, imaging technologies such as CT scanning, angiography, and magnetic resonance imaging have become indispensable diagnostic and treatment methods. In order to achieve accurate visualization of the lesion site, a high-pressure syringe is often required to deliver contrast liquid into the patient's body to obtain enhanced images of specific parts. However, in the process of pumping the liquid into the high-pressure syringe, air or gas bubbles can easily adhere to the inner surface of the tube or syringe. For example, during angiography, the injection of air into a vein or artery may cause air embolism; even if the amount of air does not reach the level that causes air embolism, it may cause imaging artifacts and reduce the effectiveness of imaging diagnosis.

[0003] Currently, relevant patents exist to address this issue. 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 liquid outlet and controls the piston rod to move forward to expel gas. If gas is detected during injection, the injection must be stopped; this method cannot achieve real-time removal of bubbles during the injection process.

[0004] Patent CN112261959A describes a method for removing gas from a reservoir. This method proposes driving a piston to move within the fluid reservoir to create a vacuum and expel gas bubbles, and installing a vibrator on the fluid reservoir to assist in exhaust. However, this method places high demands on the airtightness and stability of the system structure. As can be seen, traditional bubble removal technology still has shortcomings, and a more reliable bubble removal solution suitable for the injection process is urgently needed. Summary of the Invention

[0005] Based on this, it is necessary to provide an injection tube assembly, a high-pressure injection device, a high-pressure injection system and a control method thereof that are more reliable and convenient for bubble discharge in order to address the above problems.

[0006] A syringe assembly is used in a high-pressure injection device, the syringe assembly includes a syringe, an injection tube group and a discharge tube group, the syringe includes a syringe barrel and a piston, the piston is movably arranged in the syringe barrel, and a flow port is formed on one side of the syringe barrel; the injection tube group includes a first pipeline, the first pipeline is connected to the flow port of the syringe barrel; the discharge tube group includes a second pipeline, an exhaust bag and a discharge tube, one end of the second pipeline is connected to the flow port of the syringe barrel, and the other end is connected to the exhaust bag, and the discharge tube is connected to the bottom wall of the exhaust bag.

[0007] In one embodiment, the drainage tube group also includes a magnetic ball, and a accommodating cavity is formed in the exhaust bag. The magnetic ball is arranged in the accommodating cavity, and the size of the magnetic ball is larger than the inner diameter of the drainage tube. The exhaust bag is used to be installed in the installation groove of the high-pressure injection device and is positioned opposite to the electromagnetic drive mechanism. The electromagnetic drive mechanism is controlled to control the movement of the magnetic ball in the accommodating cavity.

[0008] In one embodiment, the number of the syringes is at least two, and the syringes are arranged in parallel and spaced apart. The number of the injection tube groups is consistent with the number of the syringes, and each of the injection tube groups is connected to one of the syringes. The drainage tube group also includes a collecting pipeline, and the number of the second pipelines is consistent with the number of the syringes. One end of each of the second pipelines is correspondingly connected to the flow port of the syringe barrel, and the other end is respectively connected to the collecting pipeline, and the collecting pipeline is connected to the exhaust bag.

[0009] In one embodiment, the injection tube group also includes a dripping bucket and a first control valve. The first pipeline is connected to the flow port of the syringe through the first control valve. The first control valve is used to control the one-way flow of liquid from the first pipeline to the syringe; the end of the first pipeline away from the syringe is connected to the bottom wall of the dripping bucket.

[0010] In one embodiment, the injection tube assembly further includes a pressure transmission member, which is disposed on the discharge tube and is used to transmit the liquid pressure in the discharge tube to a pressure detector.

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

[0012] A high-pressure injection device, which includes a body and a booster drive mechanism, wherein the body is formed with 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, the liquid injection mounting position is used to install a liquid injection tube group, the liquid discharge mounting position is provided with a mounting groove, the liquid discharge mounting position is used to install a liquid discharge tube group so that an exhaust bag is installed in the mounting groove; the booster drive mechanism is installed at the injection mounting position of the body, and the booster drive mechanism is used to drive the piston of the syringe to move in the syringe barrel.

[0013] In one embodiment, the high-pressure injection device further includes an electromagnetic drive mechanism, which is mounted on the body and located at the mounting groove, and is controlled to control the movement of the magnetic ball in the exhaust bag.

[0014] In one embodiment, the electromagnetic drive mechanism includes at least two electromagnetic valves, the two electromagnetic valves are arranged on the body at intervals around the installation groove, and the two electromagnetic valves can be started and operated 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 on the three iron cores. The three iron cores are spaced apart in the mounting shell around the mounting slot. The three coils are all connected to the electrical control unit, and the electrical control unit is controlled to connect three-phase alternating current.

[0016] In one embodiment, the high-pressure injection device also includes a liquid level detector, which is arranged in the installation groove. The liquid level detector is used to detect the liquid level of the liquid in the exhaust bag, and the liquid level detector is electrically connected to the electromagnetic drive mechanism. The electromagnetic drive mechanism is used to control operation according to the detection result of the liquid level detector.

[0017] In one embodiment, the high-pressure injection device also includes a first bubble detector and a second bubble detector. The first bubble detector is arranged on the injection installation position, and the first bubble detector is used to detect bubbles in the injection tube group. The second bubble detector is arranged on the drainage installation position and is located behind the installation 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, which is disposed on the drainage installation position and located behind the second bubble detector. The shut-off valve is used to control the flow or shut-off of the drainage pipe.

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

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

[0021] When using the above-mentioned syringe assembly, high-pressure injection device, and high-pressure injection system, the syringe assembly is installed on the high-pressure injection device, so that the syringe is installed on the injection mounting position, the injection tube group is installed on the injection mounting position, the drainage tube group is installed on the drainage mounting position, and the exhaust bag is installed in the mounting groove. The booster drive mechanism is activated to drive the piston to move backward in the syringe, and the liquid medicine is sucked into the syringe through the first pipeline of the injection tube group. Then, the booster drive mechanism drives the piston to move forward in the syringe, pushing the liquid medicine in the syringe into the exhaust bag through the second pipeline. After the liquid medicine enters the exhaust bag, it sinks due to gravity and booster pressure and is discharged through the drainage tube. The bubbles generated during the pushing process float to the space above the liquid medicine, effectively preventing the bubbles from being pushed into the human body, reducing medical risks such as air embolism and imaging artifacts caused by bubbles, and ensuring the safety of patients and the accuracy of diagnosis and treatment. Furthermore, even if bubbles form within the syringe during drug injection, the system can be promptly expelled through the exhaust bladder, eliminating the need to stop the injection process due to bubble detection, as is the case with traditional techniques. This ensures the continuity of the injection process, improves medical efficiency, and reduces the discomfort and potential risks to patients caused by injection interruptions. Furthermore, this system eliminates the need for vacuuming and vibrating exhaust structures, which reduces the requirements for airtightness and stability of the system structure, simplifies the system structure, reduces manufacturing and maintenance costs, and ensures the reliability of the system over extended periods of use.

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

[0023] Controlling the closing of the first pipeline, starting the booster drive mechanism to drive the piston to move in the syringe, so that the liquid medicine flows from the syringe into the exhaust bag;

[0024] activating the electromagnetic drive mechanism to drive the magnetic ball to stir the liquid in the exhaust bag;

[0025] obtaining a liquid level of the liquid in the exhaust bag;

[0026] When the liquid level in the exhaust bag is lower than a preset liquid 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 bag and blocks the drainage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0029] In addition, the drawings are not drawn in 1:1 scale, and the relative sizes of the various elements are only exemplarily drawn in the drawings, and are not necessarily drawn in true scale.

[0030] Figure 1 A structural schematic diagram of a high-pressure injection system in an embodiment.

[0031] Figure 2 A structural schematic diagram of a high-pressure injection system in an embodiment. Figure 1

[0032] A structural schematic diagram of a high-pressure injection system in an embodiment. Figure 3 Figure 2 A structural schematic diagram of a high-pressure injection system in an embodiment.

[0033] Figure 4 A structural schematic diagram of a high-pressure injection system in an embodiment.

[0034] Figure 5 A structural schematic diagram of a high-pressure injection system in an embodiment. Figure 4

[0035] Figure 6 A flow chart of a control method of a high-pressure injection system in an embodiment.

[0036] Explanation of reference signs:

[0037] High-pressure injection system 1; injection tube assembly 10; injector 110; injection tube group 120; first tube line 121; drip chamber 122; first control valve 123; puncture device 124; drainage tube group 130; second tube line 131; air release bag 132; drainage tube 133; air release valve 134; magnetic ball 135; containing cavity 136; collecting tube line 137; butt joint 138; pressure transmission piece 140; particle filter 150; high-pressure injection device 20; machine body 210; boost driving mechanism 220; electromagnetic driving mechanism 230; electromagnetic 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 air bubble detector 250; second air bubble detector 260; intercepting valve 270. DETAILED DESCRIPTION

[0038] ​​To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0039] See Figures 1 to 3 , the high-pressure injection system 1 in one embodiment of the present application, the high-pressure injection system 1 includes a syringe assembly 10 and a high-pressure injection device 20. The syringe assembly 10 is installed on the high-pressure injection device 20 for use to realize the injection control of the liquid medicine. Specifically, the syringe assembly 10 includes a syringe 110, an injection tube group 120 and a drainage tube group 130. The syringe 110 includes a syringe and a piston. The piston is movably arranged in the syringe, and a flow port is formed on one side of the syringe. The injection tube group 120 includes a first pipeline 121, and the first pipeline 121 is connected to the flow port of the syringe. The drainage tube group 130 includes a second pipeline 131, an exhaust bag 132 and a drainage tube 133. One end of the second pipeline 131 is connected to the flow port of the syringe, and the other end is connected to the exhaust bag 132. The drainage tube 133 is connected to the bottom wall of the exhaust bag 132.

[0040] During use, the piston moves backward within the syringe, drawing the liquid medicine into the syringe through first conduit 121 of the injection tube assembly 120. The piston is then driven forward within the syringe, pushing the liquid medicine in the syringe through second conduit 131 into the vent bladder 132. Once inside the vent bladder 132, the liquid medicine sinks due to gravity and boost pressure and is discharged through drain tube 133. However, bubbles generated during the pushing process rise to the space above the liquid medicine, effectively preventing them from being pushed into the human body. This reduces medical risks such as air embolism and imaging artifacts caused by bubbles, ensuring patient safety and the accuracy of diagnostic and treatment.

[0041] In this embodiment, the end of the second conduit 131 away from the syringe is connected to the top wall of the venting bladder 132. This effectively separates the gas from the liquid medicine as it flows through the second conduit 131 into the venting bladder 132, concentrating the gas above the venting bladder 132. In other embodiments, the end of the second conduit 131 away from the syringe can also be connected to the side wall of the venting bladder 132, allowing the liquid medicine to enter the venting bladder 132 from the side wall.

[0042] In one embodiment, a vent is defined on the top wall of the vent bladder 132. An vent is connected to the vent, and an vent valve 134 is provided on the vent, or the vent valve 134 is provided directly at the vent. The vent valve 134 can be used to control the venting of gas from the vent bladder 132 or to close it to maintain the vent bladder 132, thereby ensuring the infusion pressure within the vent bladder 132. Specifically, the vent valve 134 can be a manual on / off valve, manually controlling the venting of the vent bladder 132. For example, the vent valve 134 can be a stopcock structure that screws onto the vent bladder 132, and the vent is opened or closed by turning the stopcock structure. In other embodiments, the vent valve 134 can be a control valve provided on the high-pressure injection device 20, and the venting of the vent bladder 132 is controlled by controlling the operation of the control valve. For example, the control valve can be a push-pushing structure that opens or closes the vent by squeezing the tubing at the vent bladder 132.

[0043] See Figure 3 and Figure 4 In one embodiment, the drainage tube group 130 further includes a magnetic ball 135. A receiving cavity 136 is formed in the exhaust sac 132. The magnetic ball 135 is disposed in the receiving cavity 136, and the size of the magnetic ball 135 is larger than the inner diameter of the drainage tube 133. By providing a controllable magnetic field on the outer wall of the exhaust sac 132, the movement of the magnetic ball 135 in the receiving cavity 136 can be flexibly controlled, which can effectively stir the liquid medicine in the exhaust sac 132, making the liquid medicine mixed more evenly, ensuring that the composition of the liquid medicine injected into the patient's body is uniform, and improving the stability of the diagnosis and treatment effect. At the same time, during the stirring process, the magnetic ball 135 can effectively break up tiny bubbles attached to the inner wall of the exhaust sac 132 and dispersed in the liquid medicine. This active stirring and exhausting method can further reduce the bubble content in the liquid medicine, and greatly reduce the risks of air embolism, imaging artifacts, etc. caused by bubbles. When the injection of the drug solution is completed, the magnetic ball 135 falls to the bottom wall of the exhaust bag 132 by its own weight, and is located at the connection point between the drainage tube 133 and the exhaust bag 132, forming a blocking structure, which effectively prevents the occurrence of drug solution backflow, further improves the safety and reliability of the drug solution injection process, reduces the potential risks in medical operations, and provides medical staff with a more efficient and safer injection auxiliary tool.

[0044] In this embodiment, the cross-sectional dimensions of the portion of the accommodating chamber 136 near the drain pipe 133 decrease toward the drain pipe 133. That is, the portion of the accommodating chamber 136 near the drain pipe 133 is tapered, allowing the magnetic ball 135 to fall under its own weight to the connection between the drain pipe 133 and the accommodating chamber 136, thereby sealing the drain pipe 133.

[0045] In one embodiment, the number of syringes 110 is at least two, and each syringe 110 is arranged in parallel and spaced apart. The number of injection tube groups 120 is consistent with the number of syringes 110, and each injection tube group 120 corresponds to one connected to the syringe 110. The drainage tube group 130 also includes a collection pipeline 137, and the number of second pipelines 131 is consistent with the number of syringes 110. One end of each second pipeline 131 is connected to the flow port of a syringe barrel, and the other end is connected to the collection pipeline 137, and the collection pipeline 137 is connected to the exhaust bag 132. The configuration of multiple syringes 110 enables the system to achieve simultaneous injection of at least two liquid medicines, meeting the needs of mixed injection of different liquid medicines in complex diagnosis and treatment scenarios. Each syringe 110 corresponds to an independent injection tube group 120, which can accurately aspirate different liquid medicines, making it convenient for medical staff to accurately control the amount of each liquid medicine used according to diagnosis and treatment needs, and avoid dosage errors affecting the treatment effect. The liquid medicine in different syringes 110 is injected into the collecting pipe 137 through the corresponding second pipe 131, and finally flows into the venting bag 132. Inside the venting bag 132, the magnetic ball 135 is used to fully mix the liquid medicine while removing bubbles, ensuring that the liquid medicine injected into the patient is uniform and stable, and ensuring the consistency and reliability of the treatment effect.

[0046] In this embodiment, the number of syringes 110 is three, and the three syringes 110 are spaced apart so as to achieve mixing of three kinds of liquid medicine at the same time. In other embodiments, the number of syringes 110 can also be two, so as to achieve mixing of two kinds of liquid medicine at the same time.

[0047] In one embodiment, the second conduit 131 is tilted relative to the collecting conduit 137, and the direction of the inclination of the second conduit 131 is from the syringe 110 to the venting bladder 132. Specifically, the downward inclination of the second conduit 131 along the direction from the syringe 110 to the venting bladder 132 reduces the flow resistance of the drug solution within the conduit, allowing the drug solution to flow more smoothly from the syringe 110 into the collecting conduit 137 and the venting bladder 132, thereby reducing energy loss during delivery. Furthermore, this prevents bubbles from being trapped in bends or blind spots in the conduit, further improving the system's exhaust efficiency and reducing the risk of bubbles entering the human body.

[0048] In one embodiment, one end of the drainage tube 133 of the drainage tube assembly 130 away from the exhaust bag 132 is further connected to a docking connector 138 for connecting to a patient circuit.

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

[0050] In one embodiment, the syringe assembly 10 further includes a particle filter 150, which is disposed on the drain pipe 133. The particle filter 150 can filter the liquid medicine, thereby improving the purity of the liquid medicine and thereby improving the safety of use.

[0051] See Figure 2 and Figure 3 In one embodiment, the injection tube assembly 120 further includes a dripping funnel 122, and the end of the first pipeline 121 away from the syringe 110 is connected to the bottom wall of the dripping funnel 122. During use, the liquid medicine first enters the dripping funnel 122 to exhaust, and then enters the syringe 110 through the first pipeline 121. Since a holding space is formed in the dripping funnel 122, when the liquid medicine flows into the dripping funnel 122, bubbles rise to the top space of the dripping funnel 122 due to buoyancy and accumulate, while the liquid medicine flows out from the first pipeline 121 at the bottom, reducing the risk of bubble generation. At the same time, during the process of sucking the liquid medicine, pressure fluctuations may occur, and the dripping funnel 122 can act as a pressure buffer chamber to absorb and disperse pressure changes. When the piston moves backward rapidly, the liquid medicine in the dripping funnel 122 can temporarily replenish the negative pressure formed by suction, reducing the pressure shock to the syringe barrel and pipeline, and reducing the risk of pipeline rupture or loose joints.

[0052] Specifically, the injection tube assembly 120 also includes a first control valve 123. The first pipeline 121 is connected to the flow port of the syringe through the first control valve 123. The first control valve 123 is used to control the one-way flow of liquid from the first pipeline 121 to the syringe. In other embodiments, the first control valve 123 is used to control the on-off flow of liquid from the first pipeline 121. When the liquid medicine is sucked into the syringe and needs to be pushed out through the discharge tube assembly 130, the first control valve 123 can prevent the liquid medicine from being pushed back into the first pipeline 121. In this embodiment, the first control valve 123 can be a one-way valve structure integrated on the first pipeline 121. Of course, in other embodiments, the first control valve 123 can also be set on the high-pressure injection device 20, and the first pipeline 121 can be opened and closed by pushing against the first pipeline 121.

[0053] Furthermore, the injection tube assembly 120 further includes a puncture device 124, which is connected to the top wall of the dripping funnel 122. The puncture device 124 is provided to facilitate piercing the medicine bottle, thereby achieving the purpose of delivering the liquid medicine to the syringe 110 through the dripping funnel 122 and the first pipeline 121.

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

[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 is formed with an injection mounting position, a liquid injection mounting position, and a liquid discharge mounting position. The injection mounting position is used to mount the syringe 110. The liquid injection mounting position is located above the injection mounting position. The liquid injection mounting position is used to mount the liquid injection tube assembly 120. The liquid discharge mounting position is provided with a mounting groove. The liquid discharge mounting position is used to mount the liquid discharge tube assembly 130, so that the exhaust bag 132 is installed in the mounting groove. The booster drive mechanism 220 is mounted on the injection mounting position of the body 210 and is used to drive the piston of the syringe 110 to move within the syringe barrel.

[0056] During use, the syringe assembly 10 is installed on the high-pressure injection device 20 so that the syringe 110 is installed on the injection mounting position, the injection tube group 120 is installed on the injection mounting position, the drainage tube group 130 is installed on the drainage mounting position, and the exhaust bag 132 is installed in the mounting groove. The booster drive mechanism 220 is started to drive the piston to move backward in the syringe, and the liquid medicine is sucked into the syringe through the first pipeline 121 of the injection tube group 120. Then the booster drive mechanism 220 drives the piston to move forward in the syringe, and pushes the liquid medicine in the syringe into the exhaust bag 132 through the second pipeline 131. After the liquid medicine enters the exhaust bag 132, it sinks due to gravity and the booster pressure and is discharged through the drainage pipe 133. The bubbles generated during the pushing process float to the space above the liquid medicine, effectively preventing the bubbles from being pushed into the human body. Furthermore, even if bubbles form within the syringe during drug injection, the high-pressure injection system 1 can be promptly expelled through the vent bladder 132. This eliminates the need to stop the injection process due to bubble detection, as is the case with conventional techniques. This ensures the continuity of the injection process, improves medical efficiency, and reduces the discomfort and potential risks to patients caused by injection interruptions. Furthermore, this high-pressure injection system 1 eliminates the need for vacuuming or vibrating exhaust mechanisms, which reduces the airtightness and stability requirements of the system structure, simplifies the system structure, reduces manufacturing and maintenance costs, and ensures system reliability over extended periods of 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 at the mounting groove. The electromagnetic drive mechanism 230 is controlled to control the movement of the magnetic ball 135 in the exhaust bag 132. Specifically, the exhaust bag 132 is used to be mounted in the mounting groove of the high-pressure injection device 20 and is positioned relative to the electromagnetic drive mechanism 230. After the medicinal solution is injected into the exhaust bag 132, the electromagnetic drive mechanism 230 is activated to control the movement of the magnetic ball 135 in the exhaust bag 132 to achieve the purpose of exhausting and stirring the medicinal solution. The electromagnetic drive mechanism 230 remotely drives the magnetic ball 135 through a magnetic field, without the need for mechanical transmission components to directly contact the medicinal solution or the interior of the exhaust bag 132. The non-contact driving method of the magnetic ball 135 maintains the integrity and airtightness of the injection tube group.

[0058] like Figure 2 and Figure 3 As shown, in one embodiment, the electromagnetic drive mechanism 230 includes at least two solenoid valves 231, which are spaced apart on the housing 210 around the mounting slot and can be activated alternately. The at least two solenoid valves 231 can generate a dynamically changing magnetic field distribution around the exhaust bladder 132. Compared to the fixed magnetic field of a single solenoid valve 231, the dynamic magnetic field-driven magnetic ball 135 can cover a wider stirring range, effectively dislodging bubbles attached to various locations on the inner wall of the exhaust bladder 132 and accelerating the upward and convergence of tiny bubbles in the liquid medicine, thereby improving bubble removal efficiency. The alternating activation of the solenoid valves 231 causes the magnetic ball 135 to produce complex motion trajectories, creating a multi-dimensional stirring effect that promotes thorough mixing of the different liquid medicine components. In this embodiment, there are two solenoid valves 231, which are positioned opposite each other. In other embodiments, there can be three solenoid valves 231, spaced apart around the mounting slot.

[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 electric control unit, and a mounting shell 234. The three coils 232 are respectively wound on the three iron cores 233, and the three iron cores 233 are spaced around the mounting slot in the mounting shell 234. The three coils 232 are all connected to the electric control unit, which is controlled to connect to the three-phase alternating current. Specifically, the electromagnetic drive mechanism 230 covers at least half of the area of ​​the mounting slot or more. The electric control unit can accurately control the intensity, direction, and speed of change of the magnetic field by adjusting the frequency, phase difference, and voltage amplitude of the three-phase alternating current, so that the movement trajectory, speed, and strength of the magnetic ball 135 can be dynamically adjusted according to the characteristics of the liquid medicine, such as viscosity, bubble content, etc., and the diagnosis and treatment needs. For example, for high-viscosity contrast agents, the magnetic field strength and rotation speed can be increased to improve the efficiency of bubble discharge; for sensitive drugs, the stirring intensity can be reduced to avoid damage to the drug activity. The electromagnetic drive mechanism 230 driven by three-phase alternating current has higher energy conversion efficiency, can reduce power loss, and simplifies the control logic of the electromagnetic drive mechanism 230. Precise control of the magnetic ball 135 can be achieved by simply adjusting the three-phase power supply parameters.

[0060] Specifically, an arc-shaped cavity is formed within the mounting housing 234, and the coil 232 and the iron core 233 are both arranged within the arc-shaped cavity of the mounting housing 234, thereby forming a varying magnetic field circumferentially around the mounting slot. In other embodiments, the mounting housing 234 can also have other structural shapes as long as they facilitate the installation and arrangement of the coil 232 and the iron core 233.

[0061] In one embodiment, a heat sink may be installed on the electromagnetic drive mechanism 230 to reduce the heat generated by the electromagnetic drive mechanism 230 during use, thereby reducing the impact on the use temperature of the liquid medicine and increasing the service life of the electromagnetic drive mechanism 230 .

[0062] In other embodiments, the electromagnetic drive mechanism 230 may also be of other structural types or implemented in other ways, as long as it can drive the magnetic ball 135 to move in the exhaust bag 132 .

[0063] See Figure 4 In one embodiment, the high-pressure injection device 20 further includes a liquid level detector 240, which is disposed in the mounting groove. The liquid level detector 240 is used to detect the liquid level of the liquid in the exhaust bag 132, and the liquid level detector 240 is electrically connected to the electromagnetic drive mechanism 230. The electromagnetic drive mechanism 230 is used to control operation according to 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 are positioned on the sidewalls of the vent bladder 132, with the second liquid level sensor 244 positioned higher than the first liquid level sensor 242. The electromagnetic drive mechanism 230 is located below the second liquid level sensor 244. The upper and lower arrangement of the first and second liquid level sensors 242, 244, in conjunction with the electromagnetic drive mechanism 230, enables fully automatic control of the venting process. Initially, the magnetic ball 135 blocks the discharge tube 133 due to its own weight, while the booster drive mechanism 220 drives the movement of the syringe 110, pushing the liquid medicine into the vent bladder 132. When the liquid medicine level reaches the second liquid level sensor 244, indicating sufficient liquid medicine in the vent bladder 132, the electromagnetic drive mechanism 230 is automatically activated, causing the magnetic ball 135 to leave the discharge tube 133 and begin agitating the mixed liquid medicine and venting the air. When the injection is complete or the liquid level drops abnormally, the electromagnetic drive mechanism 230 automatically shuts down when the liquid level reaches the first liquid level sensor 242, and the magnetic ball 135 falls back to block the discharge tube 133, effectively preventing the liquid from continuing to be infused or flowing back into the exhaust bag 132. This linkage avoids manual intervention, reduces operational errors, and ensures that the exhaust process is precisely matched to the injection status of the liquid.

[0065] In this embodiment, the first liquid level sensor 242 and the second liquid level sensor 244 may be ultrasonic liquid level sensors or photoelectric liquid level sensors. Specifically, the first liquid level sensor 242 and the second liquid level sensor 244 may both 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 positioned at the injection station and is used to detect bubbles within the injection tube assembly 120. Specifically, the first bubble detector 250 can detect bubbles within the first conduit 121. Located near the liquid inlet, it monitors bubbles in real time before the liquid enters the syringe 110. If there is an abnormality in liquid aspiration, such as a persistent absence of liquid in the first conduit 121, the first bubble detector 250 can detect this and promptly trigger an alarm or interrupt the process to prevent abnormal situations such as liquid not being aspirated into the syringe 110 or a large number of bubbles being aspirated into the syringe 110. If only tiny or isolated bubbles are detected in the first conduit 121, normal operation can continue. In this embodiment, an alarm or interruption is triggered only if 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 bubble detector 260, which is disposed on the liquid discharge mounting position and located behind the mounting slot. The second bubble detector 260 is used to detect bubbles within the liquid discharge tube 133. The second bubble detector 260 can detect bubbles before the final discharge of the liquid medicine. If the second bubble detector 260 detects bubbles, the injection process needs to be suspended to ensure safety.

[0068] In one embodiment, the high-pressure injection device 20 further includes a shutoff valve 270 , which is positioned at the drain installation location and behind the second bubble detector 260 . The shutoff valve 270 is used to control the flow or shutoff of the drain pipe 133 . When the second bubble detector 260 detects bubbles exceeding a safety threshold, the shutoff valve 270 is controlled to shut off the flow of fluid through the drain pipe 133, stopping injection and ensuring safety. For example, the shutoff valve 270 may be a stopcock valve.

[0069] In one embodiment, the high-pressure injection device 20 further includes a pressure detector, which is disposed on the drainage mounting position and located behind the mounting slot. The pressure detector is used to detect the liquid pressure within the drainage tube 133. The provision of the pressure detector facilitates detection of the liquid pressure within the drainage tube 133 to ensure the infusion pressure. Specifically, the pressure transmission member 140 of the injection tube assembly is positioned opposite the pressure detector, allowing the pressure detector to detect the pressure within the drainage tube 133 via the pressure transmission member 140.

[0070] In one embodiment, an exhaust port is provided on the top wall of the exhaust bladder 132, which is provided with an exhaust pipe. An exhaust valve 134 is provided on the body at a position corresponding to 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 based on the sensing data from the pressure detector. By controlling the exhaust valve 134, the exhaust pipe can be connected or disconnected, thereby controlling the exhaust of the exhaust bladder 132. Specifically, when the pressure detector detects that the pressure exceeds the high safety pressure value, the exhaust valve 134 can be controlled to open to achieve rapid pressure relief and ensure safety of use. When the pressure detector detects that the pressure is below the low safety pressure value, the exhaust valve 134 can be controlled to close to maintain the injection pressure of the syringe assembly 10. Of course, in other embodiments, the opening size of the exhaust valve 134 can also be dynamically adjusted based on the monitored pressure of the discharge pipe 133 to achieve the purpose of adjusting or stabilizing the infusion pressure of the discharge pipe 133.

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

[0072] The boost drive mechanism 220 is controlled to drive the piston backward within the syringe barrel to draw the liquid medicine into the syringe barrel. Specifically, according to the set usage amount, different syringes 110 are controlled to draw corresponding amounts of liquid medicine. In this embodiment, within a preset time range, or when the bubble content in the first conduit 121 is detected to be greater than a set bubble threshold, the boost drive mechanism 220 is controlled to stop driving the piston and trigger an alarm.

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

[0074] Step S1: Control the closing of the first pipeline 121, start the boost drive mechanism 220 to drive the piston to move in the syringe, so that the liquid medicine flows from the syringe into the exhaust bag 132. Specifically, control the closing of the first control valve 123, start the boost drive mechanism 220 to drive the piston to move in the syringe, so that the liquid medicine flows from the syringe into the exhaust bag 132. At this time, the exhaust valve 134 of the exhaust bag 132 is opened until the liquid medicine in the exhaust bag 132 reaches the exhaust level, and then the exhaust valve 134 of the exhaust bag 132 is closed.

[0075] Step S2: Activate the electromagnetic drive mechanism 230 to drive the magnetic ball 135 to agitate the liquid in the vent bladder 132. Specifically, the booster drive mechanism 220 continues to drive the piston within the syringe, causing the liquid to flow from the syringe into the vent bladder 132 and then be discharged through the discharge tube 133. The high-pressure injection system 1 is now ready for use. When the discharge tube 133 is connected to the patient, the electromagnetic drive mechanism 230 continues to agitate the magnetic ball 135 within the liquid in the vent bladder 132.

[0076] Step S3: Obtaining the liquid level in the venting bladder 132 . The liquid level in the venting bladder 132 is monitored to track the progress of the injection of the liquid medicine. The liquid level in the venting bladder 132 is obtained by the first liquid level sensor 242 and the second liquid level sensor 244 .

[0077] Specifically, during the injection process, the bubble situation in the drainage pipe 133 is detected. If it is detected that the bubble content in the drainage pipe 133 is 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 control the drainage pipe 133 to shut off, and the injection is stopped to ensure safety of use.

[0078] Step S4: When the liquid level in the vent bladder 132 falls below 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 vent bladder 132 and block the drainage tube 133. When the liquid level in the vent bladder 132 falls below the preset level, it indicates that the injection of the drug solution is complete or that there is an abnormality in the drug solution in the vent bladder 132. The electromagnetic drive mechanism 230 is controlled to stop operating, causing the magnetic ball 135 to fall and block the drainage tube 133, ensuring the safety of the drug solution injection.

[0079] Step S5: Obtain the injection pressure during the injection process. When it is detected that the injection pressure exceeds the high value of the safety pressure, the exhaust valve 134 on the exhaust bag 132 is controlled to open to achieve rapid pressure relief and ensure safety of use; when it is detected that the injection pressure is lower than the low value of the safety pressure, the exhaust valve 134 is controlled to close 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 liquid medicine aspiration stage, the first bubble detector 250 monitors the bubble content in the first pipeline 121 in real time. If the bubble threshold is exceeded and the aspiration is abnormal, the piston movement is paused and the alarm is triggered, thereby reducing the gas-containing liquid medicine entering the syringe from the source, thereby avoiding excessive bubbles in the syringe due to bubble compression and turbulence. During the injection and drainage stage, the electromagnetic drive mechanism 230 controls the magnetic ball 135 to move in the exhaust sac 132, which not only breaks up the tiny bubbles attached to the sac wall and the liquid medicine, but also the continuous stirring of the magnetic ball 135 ensures that the various liquid medicines are fully mixed in the exhaust sac 132, thereby avoiding the influence of uneven concentration on the diagnosis and treatment effect. At the drainage pipe 133, the second bubble detector 260 detects the bubble situation during the drainage process, and captures the residual bubbles in the discharged liquid medicine in real time, further reducing the possibility of bubbles entering the human body, reducing the risk of air embolism, and ensuring the safety of infusion. After the liquid medicine in the exhaust bag 132 drops and the injection is completed, the magnetic ball 135 blocks the drainage tube 133 to prevent backflow, thereby further ensuring the safety of the infusion process.

[0082] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0083] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0084] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0085] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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 above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An injection tube assembly, used in a high-pressure injection device, characterized in that: The syringe assembly comprises: A syringe, comprising a syringe and a piston, wherein the piston is movably disposed in the syringe, and a flow port is formed on one side of the syringe; An injection tube assembly, the injection tube assembly comprising a first pipeline connected to a flow port of the syringe; and The drainage tube group includes a second pipeline, an exhaust bag and a drainage tube. One end of the second pipeline is connected to the flow port of the injection cylinder, and the other end is connected to the exhaust bag. The drainage tube is connected to the bottom wall of the exhaust bag.

2. The syringe assembly according to claim 1, wherein: The drainage tube group also includes a magnetic ball. A accommodating cavity is formed in the exhaust bag. The magnetic ball is arranged in the accommodating cavity, and the size of the magnetic ball is larger than the inner diameter of the drainage tube. The exhaust bag is used to be installed in the installation groove of the high-pressure injection device and is positioned opposite to the electromagnetic drive mechanism. The electromagnetic drive mechanism is controlled to control the movement of the magnetic ball in the accommodating cavity.

3. The syringe assembly according to claim 2, wherein: The number of the syringes is at least two, and the syringes are arranged in parallel and spaced apart. The number of the injection tube groups is consistent with the number of the syringes, and each of the injection tube groups is connected to one of the syringes. The drainage tube group also includes a collecting pipeline, and the number of the second pipelines is consistent with the number of the syringes. One end of each of the second pipelines is correspondingly connected to the flow port of the syringe barrel, and the other end is respectively connected to the collecting pipeline, and the collecting pipeline is connected to the exhaust bag.

4. The syringe assembly according to any one of claims 1 to 3, characterized in that: The injection tube assembly further includes a dripping funnel and a first control valve. The first pipeline is connected to the flow port of the syringe through the first control valve. The first control valve is used to control the one-way flow of liquid from the first pipeline to the syringe. The end of the first pipeline away from the syringe is connected to the bottom wall of the dripping funnel. and / or The syringe assembly further comprises a pressure transmission member, which is disposed on the discharge tube and is used to transmit the liquid pressure in the discharge tube to the pressure detector; and / or The injection tube assembly further includes a particle filter, which is disposed on the discharge tube.

5. A high-pressure injection device, characterized in that: The high-pressure injection device comprises: A body, wherein an injection mounting position, a liquid injection mounting position, and a liquid drainage mounting position are formed on the body, the injection mounting position is used to mount a syringe, the liquid injection mounting position is located above the injection mounting position, the liquid injection mounting position is used to mount a liquid injection tube group, a mounting groove is provided at the liquid drainage mounting position, the liquid drainage mounting position is used to mount a liquid drainage tube group, so that the exhaust bag is mounted in the mounting groove; and A boost drive mechanism is installed at the injection installation position of the machine body, and is used to drive the piston of the syringe to move in the syringe barrel.

6. The high-pressure injection device according to claim 5, characterized in that: The high-pressure injection device further comprises an electromagnetic drive mechanism, which is mounted on the body and located at the mounting slot. The electromagnetic drive mechanism is controlled to control the movement of the magnetic ball in the exhaust bag.

7. The high-pressure injection device according to claim 6, characterized in that: The electromagnetic drive mechanism includes at least two electromagnetic valves, the two electromagnetic valves are arranged on the body at intervals around the installation groove, and the two electromagnetic valves can be started and operated alternately; or The electromagnetic drive mechanism includes three coils, three iron cores, an electric control unit and a mounting shell. The three coils are respectively wound on the three iron cores. The three iron cores are spaced apart in the mounting shell around the mounting slots. The three coils are all connected to the electric control unit, and the electric control unit is controlled to connect three-phase alternating current.

8. The high-pressure injection device according to claim 7, characterized in that: The high-pressure injection device further includes a liquid level detector, which is disposed in the mounting groove and is used to detect the liquid level of the liquid in the exhaust bag. The liquid level detector is electrically connected to the electromagnetic drive mechanism, and the electromagnetic drive mechanism is used to control operation according to the detection result of the liquid level detector. The high-pressure injection device further includes a first bubble detector and a second bubble detector, wherein the first bubble detector is arranged on the injection installation position and is used to detect bubbles in the injection tube assembly, and the second bubble detector is arranged on the discharge installation position and is located behind the installation groove, and is used to detect bubbles in the discharge tube; The high-pressure injection device further includes a shut-off valve, which is arranged on the drainage installation position and located behind the second bubble detector, and is used to control the flow or cut-off of the drainage pipe; The high-pressure injection device also includes a pressure detector, which is arranged on the drainage installation position and located behind the installation groove. The pressure detector is used to detect the liquid pressure in the drainage pipe; an exhaust port is opened on the top wall of the exhaust bag, and an exhaust pipe is arranged at the exhaust port. An exhaust valve is provided at a position corresponding to the exhaust pipe on the body. The exhaust valve is electrically connected to the pressure detector, and the exhaust valve is used to control the opening or closing of the exhaust port 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 according to any one of claims 1 to 4 and the high-pressure injection device according to any one of claims 5 to 8.

10. A control method for a high-pressure injection system, applied to the high-pressure injection system as claimed in claim 9, characterized in that: The control method includes: Controlling the closing of the first pipeline, starting the booster drive mechanism to drive the piston to move in the syringe, so that the liquid medicine flows from the syringe into the exhaust bag; activating the electromagnetic drive mechanism to drive the magnetic ball to stir the liquid in the exhaust bag; obtaining a liquid level of the liquid in the exhaust bag; When the liquid level in the exhaust bag is lower than a preset liquid 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 bag and blocks the drainage pipe.

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