An extracorporeal circulation flushing tubing and hemodialysis system

Abstract

This application discloses an extracorporeal circulation flushing tubing and a hemodialysis system. The extracorporeal circulation flushing tubing includes a first tubing assembly and a second tubing assembly. A blood pump is mounted on the first tubing assembly. Instruments are mounted at one end of the first tubing assembly downstream of the blood pump and at one end of the second tubing assembly. A second interface branch is provided at the other end of the second tubing assembly for connecting to a waste fluid collection assembly. Multiple first interface branches are provided on the first tubing assembly, each located upstream of the blood pump and used to connect to a flushing fluid supply assembly. Each first interface branch is equipped with a first clamping component. By reserving multiple first interface branches for connecting to flushing fluid supply assemblies supplying different flushing fluids, and by using the first clamping components to seal each first interface branch, different first interface branches can be selected for different instruments to achieve the desired cleaning effect, improving ease of use and safety.

Description

Technical Field

[0001] This application relates to the field of blood purification technology, and in particular to an extracorporeal circulation flushing tubing and a hemodialysis system. Background Technology

[0002] A blood purification system typically includes an extracorporeal circulation system and a blood purification device connected to the extracorporeal circulation system. The extracorporeal circulation system includes an outflow line and a return line. During blood purification treatment, blood is drawn out of the body through the outflow line, purified by the blood purification device, and then returned to the body through the return line, thereby removing pathogenic factors and other harmful substances from the blood.

[0003] Pre-flushing of extracorporeal circulation medical devices before use is a crucial step in ensuring treatment safety. Its main purpose is to remove air, particulate matter, and disinfectant residue from the tubing and the extracorporeal circulation device, ensuring system airtightness and biocompatibility. For example, during hemoperfusion therapy, the flushing volume of the perfusion device is generally 2000–5000 ml of normal saline (or heparinized normal saline). The adsorbent material in hemoperfusion devices is typically resin-based or activated carbon-based. Resin-based perfusion devices, with their microporous structure, are more prone to particulate residue, while activated carbon-based perfusion devices have adsorbents that easily detach, thus requiring a large flushing volume.

[0004] In this regard, the extracorporeal circulation flushing tubing in the relevant technology is difficult to meet the different flushing requirements of different extracorporeal circulation medical devices, thus causing inconvenience in use. Utility Model Content

[0005] This application proposes an extracorporeal circulation flushing tubing to effectively solve the technical problem of inconvenience in use due to the different flushing requirements of different extracorporeal circulation medical devices in related technologies.

[0006] This application also proposes a hemodialysis system including the above-mentioned extracorporeal circulation flushing tubing.

[0007] The first aspect of this application provides an extracorporeal circulation flushing tubing, including: a first tubing assembly and a second tubing assembly;

[0008] A blood pump is installed on the first pipeline assembly;

[0009] One end of the first tubing assembly downstream of the blood pump and one end of the second tubing assembly are used to place the instrument to be flushed;

[0010] The other end of the second pipeline assembly is provided with at least one second interface branch, which is used to connect to the waste liquid collection assembly;

[0011] The first pipeline assembly is provided with a plurality of first interface branches, each of which is located upstream of the blood pump. The first interface branches are used to connect to the flushing fluid supply assembly, and each of the first interface branches is provided with a first clamping component for sealing.

[0012] Furthermore, a second clamping component for sealing is provided on the second interface branch.

[0013] Furthermore, the extracorporeal circulation flushing tubing also includes an auxiliary tubing assembly, one end of which is used to detachably connect the device or the position between the blood pump and the device in the first tubing assembly, the other end of which is used to detachably connect the second interface branch, and the auxiliary tubing assembly is provided with a third clamping component for sealing.

[0014] Furthermore, the auxiliary tubing assembly is provided with at least one third interface branch. When multiple devices are arranged between one end of the first tubing assembly downstream of the blood pump and one end of the second tubing assembly, the third interface branch is used to connect to at least some of the adjacent devices. The third clamping component is respectively arranged on the auxiliary tubing assembly and the third interface branch.

[0015] Furthermore, the first interface branch is detachably connected to the flushing fluid supply assembly via a first detachable connecting component, and the second interface branch is detachably connected to the waste liquid collection assembly via a second detachable connecting component.

[0016] Furthermore, the first interface branch can also be used to connect an arterial blood circuit, and the second interface branch can also be used to connect a venous blood circuit.

[0017] Furthermore, multiple first interface branches are provided, and the first clamping components on each first interface branch have different markings.

[0018] Furthermore, the blood pump is provided with a pressure detection component and / or a filtration component for filtration at its input and output ends, respectively.

[0019] Furthermore, the device is configured as at least one of a dialyzer, a perfusion device, or an adsorption column.

[0020] As can be seen from the above technical solutions, the embodiments of this application have at least the following beneficial effects: the first pipeline assembly and the second pipeline assembly constitute an extracorporeal circulation flushing pipeline for the instrument. On this basis, multiple first interface branches are reserved for connecting flushing fluid supply components that supply different flushing fluids. With the cooperation of each first clamping component to seal each first interface branch, different first interface branches can be selected according to different instruments to achieve the cleaning effect, thereby improving the convenience and safety of use.

[0021] A second aspect of this application provides a hemodialysis system, including: an extracorporeal circulation flushing tubing as described in the first aspect of this application.

[0022] It is easy to understand that the hemodialysis system in the second aspect embodiment of this application has the same technical effect as the extracorporeal circulation flushing tubing in the first aspect embodiment, and therefore will not be described again.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of an adsorption column used as the instrument for cleaning the extracorporeal circulation flushing tubing in one embodiment of this application;

[0026] Figure 2 A schematic diagram of an embodiment of this application where the instruments for cleaning the extracorporeal circulation flushing tubing are an irrigation device and a dialyzer;

[0027] Figure 3 A schematic diagram of a dialyzer with a Hansen connector used for cleaning the extracorporeal circulation flushing tubing in one embodiment of this application;

[0028] Figure 4 This is a schematic diagram of a dialyzer with a Luer connector, used as the instrument for cleaning the extracorporeal circulation flushing tubing in one embodiment of this application.

[0029] Figure label:

[0030] 100. First pipeline assembly; 110. First interface branch; 120. First clamping component;

[0031] 200, Second piping assembly; 210, Second interface branch; 220, Second clamping component;

[0032] 300. Auxiliary piping assembly; 310. Third interface branch; 320. Third clamping component;

[0033] 400. Blood pump; 410. Detection components;

[0034] 500. Rinse fluid supply assembly;

[0035] 600. Waste liquid collection assembly;

[0036] 710, Adsorption column; 720, Perfusion device; 730, Dialyzer. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] See Figures 1 to 4 As shown, an embodiment of the first aspect of this application discloses an extracorporeal circulation flushing pipeline, including a first pipeline assembly 100 and a second pipeline assembly 200;

[0039] A blood pump 400 is provided on the first tubing assembly 100; one end of the first tubing assembly 100 downstream of the blood pump 400 and one end of the second tubing assembly 200 are used to place the instrument to be rinsed; the other end of the second tubing assembly 200 is provided with at least one second interface branch 210, which is used to connect to the waste liquid collection assembly 600; the first tubing assembly 100 is provided with a plurality of first interface branches 110, each of which is located upstream of the blood pump 400, and is used to connect to the rinsing fluid supply assembly 500, and each of the first interface branches 110 is provided with a first clamping member 120 for sealing.

[0040] In the embodiments of this application, an extracorporeal circulation flushing pipeline for the instrument is formed by the first pipeline assembly 100 and the second pipeline assembly 200. Based on this, multiple first interface branches 110 are reserved for connecting flushing fluid supply assemblies 500 that supply different flushing fluids. With the cooperation of each first clamping component 120 to seal each first interface branch 110, different first interface branches 110 can be selected according to different instruments to achieve the cleaning effect, thereby improving the convenience and safety of use.

[0041] It is understood that the blood pump 400 provides the flow power for the flushing solution, enabling the corresponding flushing solution to enter from the corresponding first interface branch 110, flow along the first pipeline assembly 100 through the instrument to be cleaned, and the waste liquid after flushing is discharged and collected through the waste liquid collection assembly 600 of the second interface branch 210 via the second pipeline assembly 200. In this embodiment, the first pipeline assembly 100 has multiple reserved first interface branches 110, each corresponding to a type or amount of flushing solution. When the corresponding flushing solution is needed, the first clamping member 120 of the corresponding first interface branch 110 is opened, while the first clamping members 120 of other first interface branches 110 remain sealed. This allows different instruments to be flushed with the corresponding and appropriate flushing solution. After use, the flushing solution is discharged through the second interface branch 210. The entire flushing process effectively avoids the cumbersome operation of connecting different flushing solution supply assemblies 500 according to the flushing requirements of different instruments in related technologies, ensuring operational safety while improving ease of use and efficiency.

[0042] In some embodiments, the flushing fluid supply component 500 is a liquid bag containing a corresponding flushing fluid (such as at least one of different concentrations, flushing volumes, or types), and the waste fluid collection component 600 is a waste fluid bag. In other embodiments, the flushing fluid supply component 500 and the waste fluid collection component 600 may also be container-type components of a structural type, thereby achieving the effect of storing the corresponding liquid and cooperating with the extracorporeal circulation flushing pipeline of the embodiments of this application, which will not be described in detail here.

[0043] The following will combine Figures 1 to 4 The extracorporeal circulation flushing pipeline disclosed in the embodiments of this application will be explained and described in detail.

[0044] In some embodiments of this application, reference is made to Figures 1 to 4 The second interface branch 210 is provided with a second clamping component 220 for sealing. It can be understood that by providing the second clamping component 220 on the second interface branch 210, not only can the replacement of the waste liquid collection component 600 be made more convenient, but also, when expanding the use of the extracorporeal circulation flushing pipeline of this application embodiment, the second interface branch 210 can be sealed before switching, so that the second interface branch 210 can cooperate with other components to provide convenience for the use of the cleaned instruments, and also provide a basis for the safety of use when setting up the auxiliary pipeline component 300.

[0045] In some embodiments, the other end of the second pipeline assembly 200 is provided with a plurality of second interface branches 210, and a second clamping member 220 for sealing is provided on each of the plurality of second interface branches 210. At least a portion of the second interface branches 210 are used to connect to the waste liquid collection assembly 600 to improve the convenience of collecting waste liquid.

[0046] In some embodiments of this application, reference is made to Figure 2 , Figure 3 and Figure 4 The extracorporeal circulation flushing tubing also includes an auxiliary tubing assembly 300. One end of the auxiliary tubing assembly 300 is used for detachable connection between the instrument or the blood pump 400 in the first tubing assembly 100 and the instrument. The other end of the auxiliary tubing assembly 300 is used for detachable connection to the second interface branch 210, and the auxiliary tubing assembly 300 is provided with a third clamping member 320 for sealing. It is understood that the auxiliary tubing assembly 300 is required for flushing specific instruments, such as the dialyzer 730 or the intra- and extra-membrane flushing of a plasma separator. Specifically, refer to... Figure 3 , Figure 4 When the second clamping member 220 of the second tubing assembly 200 is opened, intra-membrane flushing of the dialyzer 730 or plasma separator can be achieved. When the second clamping member 220 of the second tubing assembly 200 is closed and the auxiliary tubing assembly 300 is connected, one end of the auxiliary tubing assembly 300 is used for detachable connection of the instrument, and the other end is connected to the second interface branch 210, which can achieve extra-membrane flushing of the dialyzer 730 or plasma separator.

[0047] In some embodiments, the configuration and usage of the auxiliary pipeline assembly 300 can be adapted to the actual situation and used for auxiliary flushing of other types of instruments, thereby improving the safety and convenience of use. Further details will not be provided here.

[0048] Furthermore, referring to Figure 2 The auxiliary tubing assembly 300 is provided with at least one third interface branch 310. When multiple instruments are arranged between one end of the first tubing assembly 100 downstream of the blood pump 400 and one end of the second tubing assembly 200, the third interface branch 310 is used to connect between at least some of the adjacent instruments. A third clamping member 320 is respectively provided on the auxiliary tubing assembly 300 and the third interface branch 310. It can be understood that one end of the auxiliary tubing assembly 300 is connected to the position between the blood pump 400 and the instruments in the first tubing assembly 100, and the other end is connected to the second interface branch 210. The third interface branch 310 formed in the middle connects between adjacent instruments. With the opening or closing of the third interface branch 310 and the third clamping member 320 provided on the auxiliary tubing assembly 300, the amount of saline solution used can be saved by performing combined flushing.

[0049] In some embodiments, reference is made to Figure 2 When the adjacent instruments are the perfusion device 720 and the dialyzer 730, the above-mentioned arrangement can achieve the following flushing methods: flushing the perfusion device 720 individually, flushing the dialyzer 730 individually, or flushing the perfusion device 720 and the dialyzer 730 in series.

[0050] In some embodiments, in order to further expand the use of the extracorporeal circulation flushing tubing of the present application embodiments, a first clamping component 120 is also provided on the first tubing assembly 100. By adjusting at least one of the first clamping component 120, the second clamping component 220 or the third clamping component 320 according to the actual situation during use, the tubing of the corresponding interface branch is opened or clamped, thereby facilitating the operation of clinical treatment.

[0051] In some embodiments, at least one of the first clamping member 120, the second clamping member 220, or the third clamping member 320 may be configured as a catheter clamp. In other embodiments, it may also be configured as other components commonly used in clinical blood purification procedures for switching between tubing connection and disconnection states, which will not be further described here.

[0052] In some embodiments of this application, the first interface branch 110 is detachably connected to the flushing fluid supply assembly 500 via a first detachable connecting component, and the second interface branch 210 is detachably connected to the waste fluid collection assembly 600 via a second detachable connecting component. It is understood that the first detachable connecting component reduces the frequency of fluid bag changes by medical personnel, while the second detachable connecting component not only facilitates the setting of an appropriate number of waste fluid interface branches but also allows for adjustments to at least one of the first interface branch 110, the second interface branch 210, or the third interface branch 310 in accordance with the specific configuration of the auxiliary tubing assembly 300. This flexibly addresses the flushing requirements of different devices, achieving convenient, rapid, and safe flushing of blood purification medical devices and enabling multiple mode switching.

[0053] In some embodiments, at least one of the first or second detachable connecting components includes, but is not limited to, commonly used detachable connecting structural components such as detachable accessory tubes, connectors, and puncture devices. Specifically, at least one of these components can be selected in combination to achieve the effect of a detachable connection, thereby facilitating transfer operations. In some specific embodiments, the dialyzer 730 can use commonly used detachable connectors such as Hansen connectors or Luer connectors, making it convenient for medical personnel to operate and flush dialyzers 730 of different models and specifications.

[0054] In some embodiments, when the first interface branch 110 is used to connect to the flushing fluid supply assembly 500, the second interface branch 210 is used to connect to the waste fluid collection assembly 600. In some embodiments, when the first interface branch 110 is used to connect to the arterial blood circuit, the second interface branch 210 is used to connect to the venous blood circuit.

[0055] Understandably, exemplarily, when rinsing the adsorption column 710, rinsing fluid such as physiological saline is connected to the first interface branch 110 as needed. After circulating through the tubing and adsorption column 710, the fluid returns to the waste bag. After rinsing, the catheter clamps on the first interface branch 110 and the second interface branch 210 are closed to seal the extracorporeal circulation tubing. Subsequently, the first interface branch 110 can be connected to the arterial blood circuit, and the second interface branch 210 can be connected to the venous blood circuit. Opening the catheter clamps allows for blood purification treatment.

[0056] In some embodiments of this application, multiple first interface branches 110 are provided, and the first clamping components 120 on each first interface branch 110 have different markings. It is understood that designing multiple first interface branches 110 allows for the simultaneous connection of multiple saline or other fluid bags, enabling flushing of the dialyzer 730 and reducing the frequency of fluid bag changes by medical staff. Furthermore, multiple catheter clamps facilitate independent control of each fluid bag. If different drugs or anticoagulants are added to the fluid bags, different catheter clamp colors are used to distinguish between different fluid bags.

[0057] In some embodiments, different markings include, but are not limited to, types such as color, foolproof structure, size, text, or label, so that users can clearly and quickly identify the solution corresponding to the liquid bag, thereby improving the ease of use.

[0058] In some embodiments of this application, the blood pump 400 is provided with a pressure detection component 410 and / or a filtration component for filtration at its input and output ends, respectively. It is understood that the pressure before and after the pump is detected by the detection component 410, and the filtration component is used to effectively filter impurities, thereby ensuring safe use.

[0059] In some embodiments, the blood pump 400 is equipped with level reservoirs at both its input and output ends. This dual-level reservoir design allows for the measurement of both the pressure before and after the pump (internal pressures of the perfusion unit 720 and dialyzer 730), ensuring the safety of the instruments during flushing. Specifically, the filter screen in the level reservoir prevents rubber particles from being introduced during the insertion and removal of the insertion needle from the rubber stopper on the fluid bag.

[0060] In some embodiments of this application, the device is configured as at least one of a dialyzer 730, an perfusion device 720, or an adsorption column 710. It is understood that the embodiments of this application can flush the adsorption column 710 through the cooperative arrangement of the first tubing assembly 100 and the second tubing assembly 200. Furthermore, the auxiliary tubing assembly 300 can be used to flush the intra- and extra-membrane areas of the hemodialysis machine 730 and the plasma separator. The connection method of the auxiliary tubing assembly 300 can be further designed to realize a hemodialysis series hemoperfusion flushing tubing, thereby enabling convenient, rapid, and safe flushing of blood purification medical devices (such as the perfusion device 720, dialyzer 730, etc.) and achieving multiple mode switching.

[0061] In one specific embodiment, the extracorporeal circulation flushing tubing of this application can be used in direct clinical blood purification operations. After pre-flushing, it can be directly connected to the blood purification equipment and tubing for treatment. It can also be used for pre-flushing of instruments. When blood purification operations need to be performed continuously, and instruments have reached their usage time and need to be replaced for continuous operation, this flushing tubing can be used for pre-flushing before connecting the flushed device to the treatment tubing, thereby saving flushing time and enabling continuous clinical treatment. Furthermore, the extracorporeal circulation flushing tubing of this application can be made easier for clinical personnel to operate by adding multiple functional components. Based on the integrated tubing supply, adding any component and forming corresponding interface branches can achieve the effect of a new supply product.

[0062] The extracorporeal circulation flushing tubing of this application embodiment is described in detail below with reference to a specific example. It should be noted that the following embodiment is merely an exemplary description and should not be construed as limiting the embodiments of this application.

[0063] See Figures 1 to 4 As shown, the extracorporeal circulation flushing tubing of this embodiment includes a pre-device tubing and a post-device tubing. A blood pump 400 is installed on the pre-device tubing. The pre-pump tubing of the blood pump 400 sequentially includes three or more puncture device interface branches and a first liquid level reservoir. A second liquid level reservoir is installed on the post-pump tubing. The post-device tubing includes two or more waste fluid interface branches, each of which is equipped with a catheter clamp of a different color. The extracorporeal circulation flushing tubing of this embodiment can be used to flush instruments, including at least one of a dialyzer 730, a perfusion device 720, and an adsorption column 710.

[0064] Furthermore, it is equipped with detachable auxiliary pipelines and detachable connectors for use. Specifically, the detachable connectors can be set as Hansen connectors or Luer connectors.

[0065] Reference Figure 1In this embodiment, the extracorporeal circulation flushing tubing serves as a single adsorption column 710 flushing tubing, connecting the adsorption column 710 and the flushing tubing. As needed, branch lines are connected to the puncture site to connect flushing solutions such as physiological saline. After circulation through the tubing and adsorption column 710, the solution returns to the waste bag. After flushing with the flushing solution is complete, the catheter clamp is closed to seal the extracorporeal circulation tubing. Subsequently, the puncture device connection branch can be connected to the arterial blood circuit, and the waste fluid interface branch can be connected to the venous blood circuit to achieve blood purification treatment.

[0066] Reference Figure 2 In this embodiment, the extracorporeal circulation flushing tubing serves as a series hemodialysis hemoperfusion flushing tubing. By designing the auxiliary tubing and adjusting the liquid flow direction through the opening and closing of the catheter clamp, it is possible to flush the perfusion device 720 individually, flush the dialyzer 730 individually, or flush the perfusion device 720 and dialyzer 730 in series. Combining flushing can save the amount of physiological saline used.

[0067] Reference Figure 3 and Figure 4 In this embodiment, the extracorporeal circulation flushing tubing serves as the intra- and extra-membrane flushing tubing for the hemodialyzer 730 and the plasma separator. Under normal use, it can achieve intra-membrane flushing of the dialyzer 730 or the plasma separator. After the device is closed, the catheter clamp on the tubing connects to the detachable auxiliary tubing, which can achieve extra-membrane flushing of the dialyzer 730 or the plasma separator.

[0068] The second aspect of this application discloses a hemodialysis system. The hemodialysis system may be a blood purification medical system that includes blood purification medical devices such as an perfusion device 720 and a dialyzer 730. The hemodialysis system includes: the extracorporeal circulation flushing tubing of the first aspect of this application.

[0069] It is easy to understand that the hemodialysis system in the second aspect embodiment of this application has the same technical effect as the extracorporeal circulation flushing tubing in the first aspect embodiment, and therefore will not be described again.

[0070] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0071] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more. It should be noted that the term "and / or" used herein is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Similarly, at least one of A or B can also represent: A alone, A and B simultaneously, or B alone.

[0072] In the description of this application, it should be noted that, unless otherwise expressly 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0073] In the foregoing description of this specification, references to terms such as "one embodiment," "another embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An external circulation flushing pipeline, characterized in that, include: First piping assembly and second piping assembly; A blood pump is installed on the first pipeline assembly; One end of the first tubing assembly downstream of the blood pump and one end of the second tubing assembly are used to place the instrument to be flushed; The other end of the second pipeline assembly is provided with at least one second interface branch, which is used to connect to the waste liquid collection assembly; The first pipeline assembly is provided with at least one first interface branch, each of the first interface branches being located upstream of the blood pump. The first interface branch is used to connect to the flushing fluid supply assembly, and the first interface branch is provided with a first clamping component for sealing.

2. The extracorporeal circulation flushing pipeline according to claim 1, characterized in that: The second interface branch is provided with a second clamping component for sealing.

3. The extracorporeal circulation flushing pipeline according to claim 2, characterized in that: The extracorporeal circulation flushing tubing also includes an auxiliary tubing assembly. One end of the auxiliary tubing assembly is used to detachably connect the device or the position between the blood pump and the device in the first tubing assembly. The other end of the auxiliary tubing assembly is used to detachably connect the second interface branch, and the auxiliary tubing assembly is provided with a third clamping component for sealing.

4. The extracorporeal circulation flushing pipeline according to claim 3, characterized in that: The auxiliary tubing assembly is provided with at least one third interface branch. When multiple devices are arranged between one end of the first tubing assembly downstream of the blood pump and one end of the second tubing assembly, the third interface branch is used to connect to at least some of the adjacent devices. The third clamping component is respectively arranged on the auxiliary tubing assembly and the third interface branch.

5. The extracorporeal circulation flushing pipeline according to claim 1, characterized in that: The first interface branch is detachably connected to the flushing fluid supply assembly via a first detachable connecting component, and the second interface branch is detachably connected to the waste liquid collection assembly via a second detachable connecting component.

6. The extracorporeal circulation flushing pipeline according to claim 5, characterized in that: The first interface branch can also be used to connect an arterial blood circuit, and the second interface branch can also be used to connect a venous blood circuit.

7. The extracorporeal circulation flushing pipeline according to claim 1, characterized in that: Multiple first interface branches are provided, and the first clamping components on each first interface branch have different markings.

8. The extracorporeal circulation flushing pipeline according to claim 1, characterized in that: The blood pump is equipped with a pressure detection component and / or a filtration component for filtration at its input and output ends, respectively.

9. The extracorporeal circulation flushing pipeline according to claim 1, characterized in that: The device is configured as at least one of a dialyzer, a perfusion device, or an adsorption column.

10. A hemodialysis system, characterized in that, include: The extracorporeal circulation flushing tubing as described in any one of claims 1 to 9.

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