Thrombolytic agent perfusion system

Abstract

The application relates to a thrombolytic agent perfusion system. The thrombolytic agent perfusion system comprises a thrombolytic catheter, a power device, a connecting pipe and a constant pressure valve. The power device is configured to pump the thrombolytic agent into the thrombolytic catheter, and the connecting pipe is connected to the thrombolytic catheter and the power device. The constant pressure valve is arranged on the connecting pipe and can be closed when the pressure in the connecting pipe is lower than a preset pressure value and can be opened when the pressure in the connecting pipe reaches the preset pressure value. The thrombolytic agent perfusion system controls the opening and closing of the constant pressure valve on the connecting pipe. When the pressure of the thrombolytic agent in the connecting pipe reaches the preset pressure value, the constant pressure valve is opened to make the thrombolytic agent flow forward through the constant pressure valve into the thrombolytic catheter; when the pressure of the thrombolytic agent in the connecting pipe is lower than the preset pressure, the constant pressure valve is closed to cut off the thrombolytic agent. In this way, the thrombolytic agent can flow into the thrombolytic catheter intermittently, so as to be infused into the blood vessels of a patient in a pulse mode, thereby improving the permeability of the thrombolytic agent in the blood vessels and achieving the purpose of improving the thrombolytic effect.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to thrombolytic agent infusion systems. Background Technology

[0002] Thrombosis is a common clinical disease. The formation of thrombi often leads to peripheral vascular occlusion, and in severe cases, it can cause dangerous conditions such as ischemic stroke, myocardial infarction, and pulmonary embolism, seriously endangering human life and health. Catheter-directed thrombolysis is a surgical procedure for venous or arterial thrombosis. It involves injecting thrombolytic agents through a catheter to dissolve the thrombus and open the blocked blood vessel.

[0003] Traditional thrombolytic infusion systems typically only support continuous constant-flow infusion, resulting in low permeability of the thrombolytic agent and poor thrombolytic effect. Utility Model Content

[0004] Therefore, it is necessary to provide a thrombolytic agent infusion system that can deliver thrombolytic agents into the thrombus in a pulsed manner, thereby improving the permeability of the thrombolytic agent and thus enhancing the thrombolytic effect.

[0005] This application provides a thrombolytic agent infusion system, including:

[0006] Thrombolytic catheter;

[0007] A power unit is configured to pump the thrombolytic agent into the thrombolytic catheter;

[0008] A connecting tube connects the thrombolytic catheter and the power unit;

[0009] A pressure regulating valve is installed on the connecting pipe; the pressure regulating valve can close when the pressure in the connecting pipe is lower than a preset pressure value, and can open when the pressure in the connecting pipe reaches the preset pressure value.

[0010] In one embodiment, the thrombolytic infusion system further includes:

[0011] A pressure boosting device is installed on the connecting pipe and located between the power unit and the pressure regulating valve; the pressure boosting device is configured to increase the pressure of the thrombolytic agent in the connecting pipe.

[0012] In one embodiment, the pressurization device includes:

[0013] An elastic solvent chamber is connected to the connecting tube; the elastic solvent chamber is used to receive and store the thrombolytic agent entering through the connecting tube;

[0014] A pressurized air chamber is provided outside the elastic solvent chamber; the air pressure inside the pressurized air chamber can be adjusted to regulate the expansion or contraction of the elastic solvent chamber.

[0015] In one embodiment, the pressurization device further includes:

[0016] The gas filling device includes a matching gas source and a gas filling valve. The gas source is used to supply gas to the pressurized gas chamber. The gas filling valve is disposed on the pressurized gas chamber and is used to regulate the opening and closing of the gas supply from the gas source.

[0017] In one embodiment, the elastic solvent chamber is provided with an inlet connector and an outlet connector, the inlet connector being connected to the power unit and the outlet connector being connected to the pressure regulating valve;

[0018] The inlet connector is equipped with a one-way valve; the one-way valve is configured to allow only the thrombolytic agent to flow into the elastic solvent chamber.

[0019] In one embodiment, the connecting pipe includes:

[0020] The first connecting pipe connects the power unit and the pressure regulating valve;

[0021] The second connecting pipe connects the pressure regulating valve and the thrombolytic catheter.

[0022] The first connecting pipe is constructed as an elastic pipe.

[0023] In one embodiment, the first connecting tube includes an inner layer, a middle layer, and an outer layer, which are sequentially nested from the inside out; the inner layer is made of a biocompatible material, the middle layer is made of a pressure-resistant material, and the outer layer is made of a corrosion-resistant material.

[0024] In one embodiment, the thrombolytic infusion system further includes:

[0025] A switching valve is installed on the connecting pipe and located between the power unit and the pressure regulating valve.

[0026] In one embodiment, the pressure regulating valve includes:

[0027] The valve body is equipped with an inlet and an outlet.

[0028] A pressure regulating component is disposed on the valve body; the pressure regulating component is used to adjust the opening pressure value of the constant pressure valve.

[0029] In one embodiment, the pressure regulating valve further includes:

[0030] A pressure gauge connector is located at the outlet of the valve body; the pressure gauge connector is used to connect to a pressure gauge, which can detect the pressure of the thrombolytic agent at the outlet.

[0031] The aforementioned thrombolytic agent infusion system pumps the thrombolytic agent into a thrombolytic catheter via a power unit, and then delivers the thrombolytic agent into the blood vessel through the catheter. A pressure-regulating valve on the connecting tube controls the flow of the agent. When the pressure of the thrombolytic agent in the connecting tube reaches a preset pressure value, the pressure-regulating valve opens, allowing the thrombolytic agent to flow forward through the valve into the thrombolytic catheter. When the pressure of the thrombolytic agent in the connecting tube falls below the preset pressure, the pressure-regulating valve closes, blocking the flow of the thrombolytic agent. This allows the thrombolytic agent to flow intermittently into the thrombolytic catheter, thus delivering it into the patient's blood vessels in a pulsatile manner, thereby improving the permeability of the thrombolytic agent in the blood vessel and enhancing the thrombolytic effect. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the thrombolytic agent infusion system provided in Embodiment 1 of this application;

[0033] Figure 2 This is a partial structural schematic diagram of the thrombolytic agent infusion system provided in Embodiment 1 of this application;

[0034] Figure 3 This is a schematic diagram of the pressure regulating valve provided in Embodiment 1 of this application;

[0035] Figure 4 This is a schematic diagram of the structure of the first connecting pipe provided in Embodiment 1 of this application;

[0036] Figure 5 This is a schematic diagram of the thrombolytic agent infusion system provided in Embodiment 2 of this application;

[0037] Figure 6 This is a schematic diagram of the booster device provided in Embodiment 2 of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Thrombolytic catheter; 11. End port;

[0040] 2. Power unit;

[0041] 3. Pressure regulating valve; 31. Valve body; 311. Liquid inlet; 312. Liquid outlet; 32. Pressure regulating component; 33. Pressure gauge connector;

[0042] 4. Pressurization device; 41. Elastic solvent chamber; 411. Inlet connector; 412. Outlet connector; 42. Pressurization chamber; 43. Gas filling valve; 44. Check valve;

[0043] 5. Switch valve;

[0044] 6. Luer joint;

[0045] 7. Connecting pipe; 71. First connecting pipe; 711. Inner layer; 712. Middle layer; 713. Outer layer; 72. Second connecting pipe. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0052] Example 1:

[0053] See Figure 1 , Figure 1 A schematic diagram of the thrombolytic agent perfusion system provided in Embodiment 1 of this application is shown. This embodiment of the application provides a thrombolytic agent perfusion system for pulsatilely infusing thrombolytic agents into a patient's blood vessels. The thrombolytic agent perfusion system includes a thrombolytic catheter 1, a power unit 2, a connecting tube 7, and a pressure regulating valve 3. The power unit 2 is configured to pump the thrombolytic agent into the thrombolytic catheter 1, and the connecting tube 7 connects the thrombolytic catheter 1 and the power unit 2. The pressure regulating valve 3 is disposed on the connecting tube 7 and can close when the pressure in the connecting tube 7 is lower than a preset pressure value, and can open when the pressure in the connecting tube 7 reaches the preset pressure value. The preset pressure value is specifically set according to the thrombolytic agent pressure required for thrombolysis. The power unit 2 can be an injection pump or a peristaltic pump and can be equipped with a pressure sensor for pressure detection.

[0054] The thrombolytic agent infusion system provided in this application embodiment pumps the thrombolytic agent into the thrombolytic catheter 1 via a power device 2, and then introduces the thrombolytic agent into the blood vessel through the thrombolytic catheter 1. A pressure-regulating valve 3 is installed on the connecting tube 7 to control the opening and closing of the connecting tube 7. When the pressure of the thrombolytic agent in the connecting tube 7 reaches a preset pressure value, the pressure-regulating valve 3 opens, allowing the thrombolytic agent to flow forward through the pressure-regulating valve 3 into the thrombolytic catheter 1; when the pressure of the thrombolytic agent in the connecting tube 7 is lower than the preset pressure, the pressure-regulating valve 3 closes to cut off the flow of the thrombolytic agent. In this way, the thrombolytic agent can flow intermittently into the thrombolytic catheter 1, thereby pulsatilely infusing it into the patient's blood vessel, thus improving the permeability of the thrombolytic agent in the blood vessel and achieving the purpose of improving the thrombolytic effect.

[0055] Specifically, one end of the thrombolytic catheter 1 is connected to the connecting tube 7, and the other end is provided with an end hole 11, through which the thrombolytic agent flows into the blood vessel. Optionally, multiple end holes 11 are provided at the outlet end of the thrombolytic catheter 1 so that the thrombolytic agent can be sprayed out in a mist, which helps to improve the uniformity of infusion.

[0056] In some embodiments, the connecting pipe 7 includes a first connecting pipe 71 and a second connecting pipe 72. The first connecting pipe 71 connects to the power unit 2 and the pressure regulating valve 3, and the second connecting pipe 72 connects to the pressure regulating valve 3 and the thrombolytic catheter 1. The second connecting pipe 72 and the thrombolytic catheter 1 can be connected via a Luer connector 6. During the infusion process, the power unit 2 continuously injects thrombolytic agent into the first connecting pipe 71. The thrombolytic agent continuously flows to the pressure regulating valve 3. When its pressure reaches a preset pressure value, the pressure regulating valve 3 opens to allow the thrombolytic agent to pass through. After the pressure regulating valve 3 opens, it acts as a pressure relief device, and the pressure in the first connecting pipe 71 gradually decreases. When it decreases below the preset pressure value, the pressure regulating valve 3 closes. This process is repeated, and the thrombolytic agent in the second connecting pipe 72 and the thrombolytic catheter 1 is in a pulsating manner.

[0057] In some embodiments, please refer to Figure 1 The thrombolytic agent infusion system also includes a switching valve 5, which is installed on the connecting pipe 7 and located between the power unit 2 and the pressure regulating valve 3. Specifically, the switching valve 5 is installed on the first connecting pipe 71. By installing the switching valve 5, the on / off control of the first connecting pipe 71 is achieved.

[0058] Please see Figure 2 and Figure 3 , Figure 2 A partial structural schematic diagram of the thrombolytic agent infusion system provided in Embodiment 1 of this application is shown; Figure 3 A schematic diagram of the structure of the pressure regulating valve 3 provided in one embodiment of this application is shown.

[0059] In some embodiments, the pressure regulating valve 3 includes a valve body 31 and a pressure regulating component 32. The valve body 31 is provided with an inlet 311 and an outlet 312. The inlet 311 is connected to a first connecting pipe 71, and the outlet 312 is connected to a second connecting pipe 72 to allow the thrombolytic agent in the connecting pipe 7 to pass through. The pressure regulating component 32 is disposed on the valve body 31 and is used to adjust the opening pressure value of the pressure regulating valve 3. The opening pressure value of the regulating valve 2 is specifically set according to the aforementioned preset pressure value.

[0060] Specifically, the pressure regulating valve 3 also includes a valve core structure (not shown in the diagram). The valve core structure is movably disposed inside the valve body 31. By moving relative to the valve body 31, the pressure regulating valve 3 is opened or closed. The regulating action of the pressure regulating element 32 acts on the valve core structure. This is the conventional structure of the pressure regulating valve device, and its specific structure and working principle will not be described in detail here.

[0061] For example, the pressure regulating component 32 is configured as a knob structure. By turning the pressure regulating component 32, the opening pressure value of the pressure regulating valve 3 can be adjusted. The knob structure is located on the outside of the valve body 31 for easy cleaning and disinfection.

[0062] In other embodiments, the pressure regulating component 32 may be configured as an electronic regulating structure such as a solenoid valve, which can realize the regulating function of the constant pressure valve 3. The specific structure of the pressure regulating component 32 is not limited here.

[0063] In some embodiments, the pressure regulating valve 3 further includes an adjustment dial, which is disposed on the outer surface of the valve body 31 and is used to display the opening pressure value corresponding to the pressure regulating element 32 in any state. The resolution of the adjustment dial can be set to 1 mmHg, and by providing a spring-diaphragm composite mechanism inside the valve body 31, the response time of the adjustment dial can be made to be less than 50 ms. When adjusting the opening pressure value of the pressure regulating valve 3, the value displayed on the adjustment dial is observed to determine whether the pressure regulating element 32 has been adjusted to the required level.

[0064] In some embodiments, the pressure regulating valve 3 further includes a pressure gauge connector 33, which is located at the outlet 312 of the valve body 31. The pressure gauge connector 33 is used to connect to a pressure gauge, which can detect the pressure of the thrombolytic agent at the outlet 312. By connecting an external pressure gauge to the pressure gauge connector 33, the pressure of the thrombolytic agent at the outlet 312 is detected to determine whether the outlet pressure of the thrombolytic catheter 1 meets the infusion requirements.

[0065] Please return to the reference. Figure 1In some embodiments, the first connecting tube 71 is constructed as an elastic tube. By constructing the first connecting tube 71 as an elastic tube, its inner diameter increases through elastic deformation, allowing it to store more thrombolytic agent. When the pressure regulating valve 3 is opened, the first connecting tube 71 will retract, thereby increasing the internal pressure and thus increasing the pulse intensity.

[0066] like Figure 4 As shown, Figure 4 A schematic diagram of the structure of the first connecting tube 71 provided in Embodiment 1 of this application is shown. In some embodiments, the first connecting tube 71 includes an inner layer 711, a middle layer 712, and an outer layer 713, which are sequentially arranged from the inside out. The inner layer 711 is constructed of a biocompatible material, the middle layer 712 is constructed of a pressure-resistant material, and the outer layer 713 is constructed of a corrosion-resistant material. Thus, when the inner layer 711 comes into contact with the thrombolytic agent, it will not cause a harmful reaction. Moreover, by selecting the materials of the middle layer 712 and the outer layer 713, the first connecting tube 71 can possess pressure-resistant and corrosion-resistant properties.

[0067] Example 2:

[0068] Embodiment 2 of this application further improves the thrombolytic agent infusion system based on Embodiment 1.

[0069] Please see Figure 5 , Figure 5 A schematic diagram of the thrombolytic agent infusion system provided in Embodiment 2 of this application is shown. In this embodiment, the thrombolytic agent infusion system further includes a pressurizing device 4, which is disposed on the connecting pipe 7 and located between the power unit 2 and the pressure regulating valve 3; the pressurizing device 4 is configured to increase the pressure of the thrombolytic agent in the connecting pipe 7, so as to increase the pulse intensity.

[0070] Specifically, the booster device 4 is installed on the first connecting pipe 71, and the switch valve 5 is installed between the booster device 4 and the power device 2.

[0071] Please see Figure 6 , Figure 6A schematic diagram of the pressurizing device 4 provided in Embodiment 2 of this application is shown. The pressurizing device 4 includes an elastic solvent chamber 41 and a pressurizing gas chamber 42. The elastic solvent chamber 41 is connected to the first connecting pipe 71 and is made of an elastic material. The elastic solvent chamber 41 is used to receive and store the thrombolytic agent entering through the first connecting pipe 71. The pressurizing gas chamber 42 is covered outside the elastic solvent chamber 41. The gas pressure inside the pressurizing gas chamber 42 can be adjusted to regulate the expansion or contraction of the elastic solvent chamber 41. When the pressure regulating valve 3 is closed and the power device 2 continuously pumps the thrombolytic agent into the first connecting pipe 71, the thrombolytic agent will enter the elastic solvent chamber 41 for storage. When the pressure regulating valve 3 is opened, by increasing the gas pressure inside the pressurizing gas chamber 42, the thrombolytic agent stored in the elastic solvent chamber 41 is forced into the first connecting pipe 71, thereby increasing the thrombolytic agent pressure inside the first connecting pipe 71.

[0072] To regulate the air pressure in the pressurized chamber 42, the pressurization device 4 also includes an air supply component, which includes a gas source and an air supply valve 43. The gas source supplies air to the pressurized chamber 42. The air supply valve 43 is located on the pressurized chamber 42 and is used to regulate the opening and closing of the gas supply. During the storage of thrombolytic agents in the elastic solvent chamber 41, the gas in the pressurized chamber 42 is released through the air supply valve 43 or another venting valve. When it is necessary to release thrombolytic agents from the elastic solvent chamber 41, the air supply valve 43 is opened to fill the pressurized chamber 42 with air, thereby increasing the air pressure in the pressurized chamber 42, which in turn generates a compressive force on the elastic solvent chamber 41, thereby forcing the thrombolytic agents in the elastic solvent chamber 41 into the first connecting pipe 71.

[0073] Specifically, the elastic solvent chamber 41 is equipped with an inlet connector 411 and an outlet connector 412. The inlet connector 411 is connected to the power unit 2, and the outlet connector 412 is connected to the pressure regulating valve 3. The inlet connector 411 is equipped with a one-way valve 44, which is configured to allow only the thrombolytic agent to flow into the elastic solvent chamber 41. By providing the one-way valve 44, backflow of the thrombolytic agent in the first connecting pipe 71 towards the power unit 2 is prevented when the elastic solvent chamber 41 is pressurized.

[0074] It should be noted that in this embodiment, the pressurizing device 4 pressurizes the thrombolytic agent in the first connecting tube 71, achieving a good pressurizing effect. Therefore, the first connecting tube 71 is no longer needed to provide pressurization, and it can be made of a non-elastic material. Of course, the first connecting tube 71 can also be made of an elastic material; this is not a limitation.

[0075] The thrombolytic infusion system provided in this application embodiment allows for a single infusion volume of 0.1 to 5 ml and an infusion pressure of 50 to 300 mmHg by setting the opening pressure value of the constant pressure valve 3. The peak / valley pressure difference of the pulse intensity can be adjusted within a range of ±20%.

[0076] 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.

[0077] 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. A thrombolytic agent infusion system, characterized in that, include: Thrombolytic catheter (1); The power unit (2) is configured to pump the thrombolytic agent into the thrombolytic catheter (1); Connecting pipe (7) connects the thrombolytic catheter (1) and the power unit (2); A pressure regulating valve (3) is installed on the connecting pipe (7); the pressure regulating valve (3) can close when the pressure in the connecting pipe (7) is lower than the preset pressure value, and can open when the pressure in the connecting pipe (7) reaches the preset pressure value.

2. The thrombolytic agent infusion system according to claim 1, characterized in that, The thrombolytic agent infusion system also includes: A booster device (4) is installed on the connecting pipe (7) and located between the power unit (2) and the pressure regulating valve (3); the booster device (4) is configured to increase the pressure of the thrombolytic agent in the connecting pipe (7).

3. The thrombolytic agent infusion system according to claim 2, characterized in that, The booster device (4) includes: An elastic solvent chamber (41) is connected to the connecting tube (7); the elastic solvent chamber (41) is used to receive and store the thrombolytic agent entering through the connecting tube (7); A pressurized air chamber (42) is provided outside the elastic solvent chamber (41); the air pressure inside the pressurized air chamber (42) can be adjusted to adjust the expansion or contraction of the elastic solvent chamber (41).

4. The thrombolytic agent infusion system according to claim 3, characterized in that, The booster device (4) also includes: The gas filling device includes a matching gas source and a gas filling valve (43). The gas source is used to supply gas to the pressurized gas chamber (42). The gas filling valve (43) is disposed on the pressurized gas chamber (42) and is used to regulate the opening and closing of the gas supply from the gas source.

5. The thrombolytic agent infusion system according to claim 3, characterized in that, The elastic solvent chamber (41) is provided with an inlet connector (411) and an outlet connector (412). The inlet connector (411) is connected to the power unit (2), and the outlet connector (412) is connected to the pressure regulating valve (3). The inlet connector (411) is provided with a one-way valve (44); the one-way valve (44) is configured to allow the thrombolytic agent to flow into the elastic solvent chamber (41) only.

6. The thrombolytic agent infusion system according to claim 1, characterized in that, The connecting pipe (7) includes: The first connecting pipe (71) connects the power unit (2) and the pressure regulating valve (3). The second connecting pipe (72) connects the pressure regulating valve (3) and the thrombolytic conduit (1). The first connecting pipe (71) is constructed as an elastic pipe.

7. The thrombolytic agent infusion system according to claim 6, characterized in that, The first connecting tube (71) includes an inner layer (711), a middle layer (712) and an outer layer (713), wherein the inner layer (711), the middle layer (712) and the outer layer (713) are sequentially fitted from the inside to the outside; the inner layer (711) is constructed of a biocompatible material, the middle layer (712) is constructed of a pressure-resistant material, and the outer layer (713) is constructed of a corrosion-resistant material.

8. The thrombolytic agent infusion system according to any one of claims 1 to 7, characterized in that, The thrombolytic agent infusion system also includes: The switching valve (5) is installed on the connecting pipe (7) and located between the power unit (2) and the pressure regulating valve (3).

9. The thrombolytic agent infusion system according to any one of claims 1 to 7, characterized in that, The pressure regulating valve (3) includes: The valve body (31) is provided with an inlet (311) and an outlet (312). A pressure regulating component (32) is disposed on the valve body (31); the pressure regulating component (32) is used to adjust the opening pressure value of the constant pressure valve (3).

10. The thrombolytic agent infusion system according to claim 9, characterized in that, The pressure regulating valve (3) also includes: A pressure gauge connector (33) is provided at the outlet (312) of the valve body (31); the pressure gauge connector (33) is used to connect to a pressure gauge, which can detect the pressure of the thrombolytic agent at the outlet (312).

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