A multi-channel injection and suction device for liver cysts

Abstract

The utility model relates to a kind of multi-channel liquid injection and suction device for liver cyst, comprising: multiple syringes;Multiple fixed seats, each the syringe is fixed in one fixed seat respectively;Multiple drive mechanisms, each the drive mechanism is used to drive the piston of corresponding syringe linear reciprocating motion along its axial direction;Multi-channel switching valve, the multi-channel switching valve has a common interface and multiple independent branch interfaces, the common interface is used to be connected with drainage tube, each the branch interface is connected with the outlet of one syringe by connecting pipeline respectively;Controller, the controller is electrically connected with each drive mechanism, multi-channel switching valve respectively, to control each drive mechanism action, and control the branch interface corresponding to multi-channel switching valve and the common interface communication, to execute liquid injection and / or suction operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a multi-channel injection and aspiration device for liver cysts. Background Technology

[0002] Liver cysts are a common liver disease, and a common clinical treatment method is puncture and catheter drainage combined with sclerotherapy irrigation. The procedure involves connecting multiple syringes sequentially to the same drainage tube within the cyst cavity via a three-way valve. First, a syringe filled with saline solution is used to inject saline. Then, an empty syringe is used to manually aspirate the cyst fluid. After repeatedly irrigating the cyst, a syringe filled with sclerotherapy is used to inject the sclerosing agent. The retention time of the sclerosing agent within the cyst is controlled based on experience or a timer to destroy the cyst's secretory cells.

[0003] However, the manual injection and aspiration procedures in the above treatment methods have many limitations: 1. High risk of infection: During the cleaning process, each manual disconnection and reconnection of the syringe will disrupt the sterile environment of the treatment, increasing the risk of cyst infection; 2. Low operational efficiency: Throughout the treatment process, frequent disassembly, replacement, connection, aspiration, and injection are required, resulting in high labor intensity and long treatment time per session, making it impossible to achieve rapid and continuous treatment; 3. Inability to implement complex treatment plans: With the development of interventional treatment technology, clinical practice has seen the emergence of treatment plans that require precise control of the injection sequence, dosage, speed, and interval of multiple agents (such as sclerosing agents, local anesthetics, contrast agents, etc. at different concentrations). Sometimes, it is necessary to retain the medication in multiple sessions, and sometimes more than two sclerosing agents need to be used. However, the existing manual operation is difficult to control precisely, and there are significant differences between different medical staff and even between the same medical staff in various operations, making it impossible to reliably implement complex treatment plans and seriously restricting the development of liver cyst treatment technology. Utility Model Content

[0004] In view of the above-mentioned defects in the prior art, the technical problem to be solved by this utility model is to provide a multi-channel injection and aspiration device for liver cysts, so as to solve the problems of high infection risk, cumbersome operation and poor treatment accuracy of existing manual operation, and realize sterile, high-precision fully automatic injection and aspiration of liver cysts.

[0005] To achieve the above objectives, this utility model provides a multi-channel injection and aspiration device for liver cysts, comprising:

[0006] Multiple syringes;

[0007] Multiple mounting bases, with each syringe fixed in one of the mounting bases;

[0008] Multiple drive mechanisms, each of which is used to drive the piston of the corresponding syringe to perform linear reciprocating motion along its axial direction;

[0009] A multi-channel switching valve has a common interface and multiple independent branch interfaces. The common interface is used to connect to a drainage tube, and each branch interface is connected to the outlet of a syringe through a connecting pipe.

[0010] The controller is electrically connected to each of the drive mechanisms and the multi-channel switching valve to control the operation of each drive mechanism and to control the multi-channel switching valve to switch the corresponding branch interface to the common interface, thereby performing liquid injection and / or aspiration operations.

[0011] Furthermore, it also includes a housing, in which each of the fixed seats, each of the drive mechanisms, the multi-channel switching valve and the controller are all disposed.

[0012] Furthermore, the fixing base is provided with a clamp, and the syringe barrel is fixed in the clamp.

[0013] Furthermore, the axis of each syringe is perpendicular to the horizontal plane, and the outlet of each syringe faces downward.

[0014] Furthermore, the drive mechanism includes a drive motor and a ball screw. The ball screw includes a screw and a ball nut. The drive motor is connected to the screw in a transmission connection. The ball nut is fixed to the piston handle of the syringe. The controller is electrically connected to the drive motor of each of the drive mechanisms.

[0015] Furthermore, the controller includes:

[0016] The drive control module is used to control the operation of the drive motors of each drive mechanism to drive the piston of the corresponding syringe to perform linear reciprocating motion.

[0017] The switching control module is used to control the multi-channel switching valve to switch the corresponding branch interface to the common interface.

[0018] Furthermore, the connecting pipe is a silicone flexible tube.

[0019] Furthermore, the common interface is equipped with a Luer conical connector for detachable connection with the drainage tube.

[0020] As described above, the multi-channel injection and aspiration device for liver cysts disclosed in this invention has the following beneficial effects:

[0021] 1. The multi-channel switching valve and controller meet the requirements of aseptic operation, greatly improving the aseptic nature and safety of the liver cyst treatment process and avoiding the risk of contamination caused by frequent manual disconnection and reconnection of the syringe.

[0022] 2. Through the drive mechanism and controller, it can automatically complete tedious and complex operations such as aspiration of cyst fluid, flushing, drug injection, and aspiration of residue. It can precisely control the injection sequence, dosage, speed, interval time and indwelling time, avoiding problems such as sequence errors and timing omissions that may occur in manual operation. It standardizes and regulates the process of complex treatment, improves the consistency of treatment effects, increases treatment efficiency and reduces the burden on medical staff.

[0023] 3. It adopts a modular design, integrating multiple drive mechanisms and multi-channel switching valves into one unit. The structure is reasonable, easy to manufacture and maintain, and can be expanded to various medical scenarios such as peritoneal lavage, pleural effusion, and bladder irrigation. It has strong scalability, huge market potential, and broad application prospects. Attached Figure Description

[0024] Figure 1 This is a top view of the electric heat tracing system in this utility model.

[0025] Explanation of icon numbers

[0026] 1. Syringe, 2. Fixing base, 3. Drive mechanism, 4. Multi-channel switching valve, 401. Common interface, 402. Branch interface, 403. Connecting tubing, 5. Controller, 6. Drainage tube, 7. Housing. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0028] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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 on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] See Figure 1 This utility model provides a multi-channel injection and aspiration device for liver cysts, comprising:

[0032] Multiple syringes 1, wherein each syringe 1 can be filled with different treatment liquids such as saline, sclerosing agent, etc., to meet the drug requirements of different treatment steps such as cyst fluid aspiration, repeated flushing, and sclerosing agent injection.

[0033] Multiple fixing bases 2, each syringe 1 is fixed in one fixing base 2.

[0034] Preferably, the fixing base 2 is provided with a clamp, and the barrel of the syringe 1 is fixed in the clamp. The clamp is existing technology, and its structure will not be described in detail here. By setting the clamp, it can be adapted to standard medical sterile syringes 1 of different specifications, such as 10ml, 20ml, 50ml, etc. It is convenient to install and disassemble, and the clamping is stable, which can prevent the syringe 1 from shifting during the driving process.

[0035] Preferably, the axis of each syringe 1 is perpendicular to the horizontal plane, and the outlet of each syringe 1 faces downward, which facilitates injection and aspiration.

[0036] Multiple drive mechanisms 3 are provided, each drive mechanism 3 is used to drive the piston of the corresponding syringe 1 to perform linear reciprocating motion along its axial direction.

[0037] Preferably, the drive mechanism 3 includes a drive motor and a ball screw. The ball screw includes a screw and a ball nut. The drive motor is connected to the screw via a transmission. The ball nut is fixed to the piston handle of the syringe 1. The controller 5 is electrically connected to the drive motor of each drive mechanism 3. Preferably, a slot can be provided on the ball nut, and a claw can be provided on the piston handle of the syringe 1. The piston handle can be fixed to the ball nut by engaging the claw in the slot. In other embodiments, other suitable fixing connection structures can also be used. Preferably, the drive motor is set as a stepper motor with a step angle of 1.8° and the lead of the ball screw is 2mm, which can achieve piston axial displacement control at the 0.01mm level, corresponding to a liquid control accuracy of up to 0.05ml. It can accurately push or pull back the piston of the syringe 1 to realize quantitative injection and aspiration of liquid.

[0038] The multi-channel switching valve 4 has a common interface 401 and multiple independent branch interfaces 402. The common interface 401 is used to connect to the drainage tube, and each branch interface 402 is connected to the outlet of a syringe 1 through a connecting tube 403. Preferably, the multi-channel switching valve 4 is an electromagnetically driven rotary valve, and the controller 5 can control it to connect only one branch interface 402 to the common interface 401 at a certain time, while the other branch interfaces 402 are closed. Preferably, the multi-channel switching valve 4 uses a medical-grade silicone rubber sealing gasket inside to ensure sealing and isolation between channels and prevent leakage and cross-contamination. Preferably, all syringes 1, all connecting tubes 403, and the multi-channel switching valve 4 are pre-sterilized disposable medical consumables that can be replaced as a whole after use.

[0039] The controller 5 is electrically connected to each drive mechanism 3 and the multi-channel switching valve 4 to control the operation of each drive mechanism 3 and to control the multi-channel switching valve 4 to switch the corresponding branch interface 402 to the common interface 401, thereby performing liquid injection and / or aspiration operations.

[0040] Preferably, the controller 5 includes: a drive control module for controlling the operation of the drive motors of each drive mechanism 3 to drive the piston of the corresponding syringe 1 to perform linear reciprocating motion; and a switching control module for controlling the multi-channel switching valve 4 to switch the corresponding branch interface 402 to the common interface 401.

[0041] Preferably, the controller 5 also includes a parameter setting and storage module for setting the task sequence of each channel; and a timing logic module for managing the overall workflow and precise timing, with a timing error of ≤1s, which can accurately control the dwell time of the hardener.

[0042] The basic working principle of the multi-channel injection and aspiration device for liver cysts involved in this utility model is as follows: A controller 5 controls the multi-channel switching valve 4 and multiple drive mechanisms 3, ensuring that only one branch interface 402 of the multi-channel switching valve 4 is connected to the common interface 401 at any given time, and automatically injecting and / or aspirating the corresponding syringe 1, thus achieving automated and high-precision treatment of liver cysts. Specifically, different treatment liquids can be pre-filled into the syringe 1 and connected to multiple branch interfaces 402 of the multi-channel switching valve 4. The controller 5 controls the multi-channel switching valve 4 to connect a specific branch interface 402 to the common interface 401, while simultaneously controlling the corresponding drive mechanism 3 to push or pull back the piston of the syringe 1, thereby achieving quantitative delivery or extraction of the liquid in that specific syringe 1.

[0043] See Figure 1 The present invention will be further described below with reference to a specific embodiment:

[0044] In this embodiment, see Figure 1 As a preferred design, it also includes a housing 7, in which each fixed base 2, each drive mechanism 3, multi-channel switching valve 4 and controller 5 are all located; preferably, for ease of operation, the housing 7 is also provided with a control panel and a display screen. The control panel is used to set the working parameters of each syringe 1, including injection volume, aspiration volume, number of cycles, flow rate, residence time, etc., and can control the start and stop of the device. The display screen is used to display the current working status and preset parameters of each syringe 1 in real time.

[0045] In this embodiment, see Figure 1 As a preferred design, the syringe 1, the fixed base 2, and the drive mechanism 3 are each provided with six, and the branch interface 402 of the multi-channel switching valve 4 is also provided with six.

[0046] In this embodiment, see Figure 1 As a preferred design, the connecting tube 403 is a silicone tube with a length ≤15cm and a volume ≤2ml, which can reduce drug residue in the connecting tube 403 and avoid cross-dilution between different therapeutic agents.

[0047] In this embodiment, see Figure 1 As a preferred design, the common interface 401 is equipped with a Luer conical connector for detachable connection with the drainage tube. The Luer conical connector has a good self-sealing effect and can effectively prevent leakage of medicine and bladder fluid.

[0048] The following is an example of the working process of this device.

[0049] Preparation phase: Medical staff install six syringes 1 pre-filled with different liquids onto six fixed bases 2, and connect the outlet of each syringe 1 to the corresponding branch interface 402 of the multi-channel switching valve 4 through multiple connecting pipes 403. Connect the common interface 401 to the patient's drainage tube. Set the working parameters and task sequence of each syringe 1 through the control panel. For example, the first syringe 1 performs cyst fluid aspiration, the second syringe 1 performs saline flushing, the third syringe 1 performs sclerotherapy injection, and the sclerotherapy injected by the third syringe 1 needs to be left in place, etc.

[0050] Working phase: Step 1, the controller 5 instructs the multi-channel switching valve 4 to switch, so that the first branch interface 402 is connected to the common interface 401. At this time, the first syringe 1 is connected to the drainage tube.

[0051] Step 2: The controller 5 instructs the drive mechanism 3 of the first syringe 1 to work and perform the task according to the preset parameters, such as aspirating cyst fluid. At this time, aspiration can be performed by one syringe 1 or by multiple syringes 1 in sequence, depending on the actual situation.

[0052] Step 3: The controller 5 instructs the multi-channel switching valve 4 to switch, disconnecting the first branch interface 402 and connecting the second branch interface 402 with the common interface 401. At this time, the first syringe 1 is disconnected from the drainage tube, and the second syringe 1 is connected to the drainage tube.

[0053] Step four: The controller 5 instructs the drive mechanism 3 of the second syringe 1 to work and perform the task according to the preset parameters, such as: injecting 50ml of physiological saline and then withdrawing it, repeating 3 times to complete the flushing operation. At this time, flushing can be done by one syringe 1 or multiple syringes 1 in sequence, depending on the actual situation.

[0054] Step 5: The controller 5 instructs the multi-channel switching valve 4 to switch, disconnecting the second branch interface 402 and connecting the third branch interface 402 with the common interface 401. At this time, the second syringe 1 is disconnected from the drainage tube, and the third syringe 1 is connected to the drainage tube.

[0055] Step six: The controller 5 instructs the drive mechanism 3 of the third syringe 1 to work and perform the task according to the preset parameters, such as: injecting the hardening agent, leaving it for a preset time, and then aspirating the residual agent. At this time, the hardening agent can be injected through one syringe 1 or multiple syringes 1 can be injected sequentially, depending on the actual situation.

[0056] No human intervention is required throughout the entire treatment process, from start to finish.

[0057] As can be seen from the above, the multi-channel injection and aspiration device for liver cysts of this invention has the following beneficial effects:

[0058] 1. By using the multi-channel switching valve 4 and controller 5, the aseptic operation requirements are met, greatly improving the aseptic nature and safety of the liver cyst treatment process and avoiding the risk of contamination caused by frequent manual disconnection and reconnection of the syringe 1.

[0059] 2. Through the drive mechanism 3 and controller 5, the tedious and complex operations such as aspiration of cyst fluid, flushing, drug injection, and aspiration of residue can be completed automatically. The injection sequence, dosage, speed, interval time and indwelling time can be precisely controlled to avoid problems such as sequence errors and timing omissions that may occur during manual operation. This standardizes and regulates the process of complex treatment, improves the consistency of treatment effects, increases treatment efficiency and reduces the burden on medical staff.

[0060] 3. It adopts a modular design, integrating multiple drive mechanisms 3 with a multi-channel switching valve 4 into one unit. The structure is reasonable, easy to manufacture and maintain, and can be expanded to various medical scenarios such as peritoneal lavage, pleural effusion, and bladder irrigation. It has strong scalability, huge market potential, and broad application prospects.

[0061] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0062] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A multi-channel infusion and aspiration device for liver cysts, characterized in that: include: Multiple syringes (1); Multiple fixing bases (2), each of the syringes (1) is fixed in one of the fixing bases (2); Multiple drive mechanisms (3), each of the drive mechanisms (3) is used to drive the piston of the corresponding syringe (1) to perform linear reciprocating motion along its axial direction; A multi-channel switching valve (4) has a common interface (401) and multiple independent branch interfaces (402). The common interface (401) is used to connect to the drainage tube, and each branch interface (402) is connected to the outlet of a syringe (1) through a connecting pipe (403). The controller (5) is electrically connected to each of the drive mechanisms (3) and the multi-channel switching valve (4) to control the operation of each drive mechanism (3) and to control the multi-channel switching valve (4) to switch the corresponding branch interface (402) to the common interface (401) to perform liquid injection and / or aspiration operations.

2. The multi-channel infusion and aspiration device for liver cysts according to claim 1, characterized in that: It also includes a housing (7), in which each of the fixed seats (2), each of the drive mechanisms (3), the multi-channel switching valve (4) and the controller (5) are located.

3. The multi-channel infusion and aspiration device for liver cysts according to claim 1, characterized in that: The fixing seat (2) is provided with a clamp, and the barrel of the syringe (1) is fixed in the clamp.

4. The multi-channel infusion and aspiration device for liver cysts according to claim 3, characterized in that: The axis of each syringe (1) is perpendicular to the horizontal plane, and the outlet of each syringe (1) faces downward.

5. The multi-channel infusion and aspiration device for liver cysts according to claim 1, characterized in that: The drive mechanism (3) includes a drive motor and a ball screw. The ball screw includes a screw and a ball nut. The drive motor is connected to the screw in a transmission connection. The ball nut is fixed to the piston handle of the syringe (1). The controller (5) is electrically connected to the drive motor of each drive mechanism (3).

6. The multi-channel infusion and aspiration device for liver cysts according to claim 5, characterized in that: The controller (5) includes: The drive control module is used to control the drive motor of each drive mechanism (3) to drive the piston of the corresponding syringe (1) to perform linear reciprocating motion. The switching control module is used to control the multi-channel switching valve (4) to switch the corresponding branch interface (402) to the common interface (401).

7. The multi-channel infusion and aspiration device for liver cysts according to claim 1, characterized in that: The connecting pipe (403) is a silicone hose.

8. The multi-channel infusion and aspiration device for liver cysts according to claim 1, characterized in that: The common interface (401) is equipped with a Luer conical connector for detachable connection with the drainage tube.

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