Connection tube for blood purification and blood purification assembly

Abstract

The utility model discloses a connecting pipe for blood purification, including the connecting main pipe, the first end of connecting main pipe is equipped with first connecting branch pipe and second connecting branch pipe, the second end of connecting main pipe is equipped with the main connector for with the arterial interface connection of dialyzer, the end of first connecting branch pipe is equipped with the first connector for with the first end interface connection of perfusion device, be equipped with the second connector for with the first multifunctional interface connection of perfusion device on second connecting branch pipe. The utility model discloses a blood purification assembly. The utility model's blood purification assembly passes through adopting the connecting pipe for blood purification, and sets up first connecting branch pipe and second connecting branch pipe at the first end of connecting main pipe, like this, through the arterial interface of dialyzer of main connector connection, through the first end interface of perfusion device of first connector connection, through the first multifunctional interface of perfusion device of second connector connection, that is, even under the condition that the multifunctional interface is equipped on perfusion device, can satisfy the connection requirement.

Description

Technical Field

[0001] This utility model belongs to the field of blood purification technology, specifically a connecting tube and blood purification component for blood purification. Background Technology

[0002] A hemoperfusion device draws blood from the patient's body into the extracorporeal circulation system. The adsorbent (activated carbon, resin, etc.) within the device binds to and removes metabolic byproducts, toxic substances, and drugs from the body, thus achieving the desired elimination. In recent years, with the development and advancements in new perfusion devices, hemoperfusion has found wider application in the rescue and treatment of various severe clinical conditions, including drug or toxin poisoning, severe infections, severe liver failure, end-stage renal disease (uremia), and various autoimmune diseases, in addition to drug or toxin poisoning. Hemodialysis combined with hemoperfusion (HD+HP) has become the most widely used combined artificial kidney treatment method in clinical practice.

[0003] In combined therapy, the perfusion device and dialyzer are usually used in series. The series tubing consists of a catheter with connectors at both ends, such as... Figure 1 As shown, with the increasing number of treatment modalities, the growing complexity of perfusion device designs, and the diverse application scenarios, the currently used series-connected tubing can no longer meet current requirements. For example, Chinese utility model patent CN218739700U discloses a blood purification device, which is a perfusion device with at least one exhaust port. The existing series-connected tubing connection method cannot meet the connection requirements.

[0004] In addition, existing blood purification components for hemodialysis combined with hemoperfusion (HD+HP) have the following shortcomings: (1) The perfusion device cannot be pre-charged separately. The pre-filling waste liquid of the perfusion device will flow into the dialyzer. The fine particles (such as adsorbent fragments) that may be present in the pre-filling waste liquid will cause blockage of the hollow fiber membrane pores in the dialyzer.

[0005] (2) The adsorption time of the perfusion device usually reaches saturation after 2 hours, while dialyzer treatment generally requires 4 hours. Therefore, when using a perfusion device in combination with a dialyzer, the perfusion device should be stopped after 2 hours of treatment. When the perfusion device reaches saturation, it needs to be removed. During the removal of the perfusion device, the connecting joint will be exposed to the air, which may lead to contamination of the connecting joint, which may cause infection in the patient and, in severe cases, may affect the patient's life. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a connecting tube and blood purification components for blood purification, which can meet one or more clinical needs such as adapting to new perfusion devices, pre-flushing the perfusion device separately, or removing the perfusion device from the machine in advance without disassembly.

[0007] To achieve the above objectives, this utility model provides the following technical solution: This utility model first proposes a connecting tube for blood purification, including a main connecting tube, a first connecting branch tube and a second connecting branch tube at the first end of the main connecting tube, and a main connector for connecting to the arterial interface of a dialyzer at the second end of the main connecting tube; the end of the first connecting branch tube is provided with a first connector for connecting to the first end interface of an perfusion device; and the second connecting branch tube is provided with a second connector for connecting to the first multifunctional interface of the perfusion device or a waste bag.

[0008] Furthermore, the second connecting branch pipe is used to connect to the first multi-functional interface of the irrigation device; it also includes a waste liquid bag connecting pipe, which is connected to the connecting main pipe, the first connecting branch pipe or the second connecting branch pipe, and the end of the waste liquid bag connecting pipe is provided with a waste liquid bag connector for connecting to a waste liquid bag.

[0009] Furthermore, it also includes a third connecting branch pipe, which is connected to the main connecting pipe or the second connecting branch pipe, and the end of the third connecting branch pipe is provided with a third connector for connecting to the second multi-functional interface of the irrigation device.

[0010] Furthermore, it also includes a parallel connecting branch pipe, which is connected to the main connecting pipe or the second connecting branch pipe; the end of the parallel connecting branch pipe is provided with a fourth connecting branch pipe and an arterial connecting branch pipe, the end of the fourth connecting branch pipe is provided with a fourth connector for connecting to the second end interface of the perfusion device, and the end of the arterial connecting branch pipe is provided with an arterial connector for connecting to the arterial tube.

[0011] Furthermore, the parallel connecting branch pipe is provided with a fifth connecting branch pipe, one end of which is connected to the parallel connecting branch pipe, and the other end is provided with a fifth connector for connecting to the second multi-functional interface of the irrigation device.

[0012] This utility model also proposes a blood purification component, including an perfusion device, a dialyzer, and a blood purification connecting tube as described above; the first end and the second end of the perfusion device are respectively provided with a first end interface and a second end interface, and the first end of the perfusion device is provided with a first multi-functional interface; the two ends of the dialyzer are respectively provided with an arterial interface and a venous interface. The main connector on the connecting tube is connected to the arterial interface of the dialyzer; the first connector on the first connecting branch tube is connected to the first end interface of the perfusion device; the second connector on the second connecting branch tube is connected to the first multi-functional interface of the perfusion device; the second end interface of the perfusion device is connected to an arterial tube; and the venous interface of the dialyzer is connected to a venous tube.

[0013] Furthermore, it also includes a waste liquid bag, and the blood purification connecting pipe also includes a waste liquid bag connecting pipe, which is connected to the main connecting pipe or the second connecting branch pipe. The end of the waste liquid bag connecting pipe is provided with a waste liquid bag connector, which is connected to the waste liquid bag.

[0014] Furthermore, the second end of the perfusion device is provided with a second multi-functional interface; the blood purification connecting tube also includes a third connecting branch tube, which is connected to the main connecting tube or the second connecting branch tube, and the end of the third connecting branch tube is provided with a third connector, which is connected to the second multi-functional interface of the perfusion device.

[0015] Furthermore, the second end of the perfusion device is provided with a second multi-functional interface; the blood purification connecting tube also includes a parallel connecting branch tube, which is connected to the main connecting tube or the second connecting branch tube; the end of the parallel connecting branch tube is provided with a fourth connecting branch tube and an arterial connecting branch tube, the end of the fourth connecting branch tube is provided with a fourth connector, and the end of the arterial connecting branch tube is provided with an arterial connector; the fourth connector is connected to the second end interface of the perfusion device, and the arterial connector is connected to the arterial tube.

[0016] Furthermore, the second end of the irrigation device is provided with a second multi-functional interface; the parallel connecting branch pipe is provided with a fifth connecting branch pipe, one end of the fifth connecting branch pipe is connected to the parallel connecting branch pipe, and the other end is provided with a fifth connector, which is connected to the second multi-functional interface of the irrigation device.

[0017] The beneficial effects of this utility model are as follows: The blood purification assembly of this utility model adopts a blood purification connecting tube and provides a first connecting branch tube and a second connecting branch tube at the first end of the main connecting tube. In this way, the main connector on the main connecting tube can be connected to the arterial interface of the dialyzer, the first connector on the first connecting branch tube can be connected to the first end interface of the perfusion device, and the second connector on the second connecting branch tube can be connected to the first multi-functional interface of the perfusion device. That is, even if the perfusion device is equipped with a multi-functional interface, the connection requirements can be met.

[0018] This utility model also has the following technical effects: By setting a waste liquid bag connecting pipe to the main connecting pipe or the second connecting branch pipe, and connecting the waste liquid bag to the waste liquid bag through the waste liquid bag connector on the waste liquid bag connecting pipe, the perfusion unit can be pre-charged separately through the second connecting branch pipe connected to the first multi-functional interface of the perfusion unit and the waste liquid bag connecting pipe connected to the waste liquid bag. The pre-filling waste liquid of the perfusion unit will not flow into the dialyzer, preventing fine particles (such as adsorbent fragments) that may be present in the pre-filling waste liquid from clogging the hollow fiber membrane pores in the dialyzer.

[0019] By setting a third connecting branch pipe that connects to the main connecting pipe or the second connecting branch pipe, and connecting the third connector on the third connecting branch pipe to the second multi-functional interface of the perfusion device, the connection requirements of the perfusion device with multi-functional interfaces at both ends can be met. When a waste liquid bag connecting pipe is provided, the perfusion device can be pre-charged separately through the second connecting branch pipe, the third connecting branch pipe, the waste liquid bag connecting pipe and the waste liquid bag. The pre-filling waste liquid of the perfusion device will not flow into the dialyzer, preventing fine particles (such as adsorbent fragments) that may exist in the pre-filling waste liquid from clogging the hollow fiber membrane pores of the dialyzer.

[0020] By setting up parallel connecting branches that connect the main pipe or the second connecting branch, and setting a fourth connecting branch and an arterial connecting branch on the parallel connecting branch, the fourth connector on the fourth connecting branch is connected to the second end interface of the perfusion device, and the arterial connector on the arterial connecting branch is connected to the arterial tube. In this way, by controlling the opening and closing of each pipeline, the arterial tube can be connected to the perfusion device, and the perfusion device and dialyzer can be pre-filled separately, realizing a combined artificial kidney treatment of hemodialysis and hemoperfusion. When the perfusion device is saturated, the opening and closing of each pipeline can be adjusted so that the arterial tube can be directly connected to the dialyzer without disassembling the perfusion device and pipeline, which can effectively avoid the connectors being exposed to the air and avoid contamination of the connectors. Attached Figure Description

[0021] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration: Figure 1 This is a schematic diagram of an existing blood purification assembly that uses series connecting tubes; Figure 2 This is a schematic diagram of the first embodiment of the blood purification component of this utility model; specifically, it is a schematic diagram of the structure when the second connecting branch tube is connected to the first multi-functional interface of the perfusion device; Figure 3 This is a schematic diagram of the structure when the second connecting branch pipe is connected to the waste liquid bag; Figure 4 This is a schematic diagram of the structure when the third connecting branch pipe is connected to the connecting main pipe in the second embodiment of the blood purification component of this utility model; Figure 5 This is a schematic diagram of the structure when the third connecting branch pipe is connected to the second connecting branch pipe in the second embodiment of the blood purification component of this utility model; Figure 6 This is a schematic diagram of the third embodiment of the blood purification component of this utility model; Figure 7 This is a schematic diagram of the structure when the waste liquid bag connecting pipe and the second connecting branch pipe are connected in the fourth embodiment of the blood purification component of this utility model; Figure 8 This is a schematic diagram of the structure when the waste liquid bag connecting pipe and the connecting main pipe are connected in the fourth embodiment of the blood purification component of this utility model; Figure 9 This is a schematic diagram of the structure when the waste liquid bag connecting pipe and the first connecting branch pipe are connected in the first embodiment of the blood purification component of this utility model; Figure 10 This is a schematic diagram of the structure when the waste liquid bag connecting pipe and the connecting main pipe are connected in the first embodiment of the blood purification component of this utility model; Figure 11 This is a schematic diagram of the structure when the waste liquid bag connecting pipe and the connecting main pipe are connected in the second embodiment of the blood purification component of this utility model; Figure 12 This is a schematic diagram of the structure when the waste liquid bag connecting pipe is connected to the first connecting branch pipe in the second embodiment of the blood purification component of this utility model; Figure 13 This is a schematic diagram of the structure when the waste liquid bag connecting pipe is connected to the first connecting branch pipe and the second connecting branch pipe in the third embodiment of the blood purification component of this utility model; Figure 14 This is a schematic diagram of the structure when the waste liquid bag connecting pipe and the connecting main pipe are connected in the third embodiment of the blood purification component of this utility model; Figure 15 This is a schematic diagram of the structure when the waste liquid bag connecting pipe and the connecting main pipe are connected in the fourth embodiment of the blood purification component of this utility model; Figure 16 This is a schematic diagram of the structure when the waste liquid bag connecting pipe is connected to the first connecting branch pipe and the second connecting branch pipe in the fourth embodiment of the blood purification component of this utility model.

[0022] Explanation of reference numerals in the attached figures: 1-Perfusion device; 2-Dialyzer; 3-Waste liquid bag; 10-Main connecting pipe; 101-Main connector; 102-Main switch clamp; 11-First connecting branch pipe; 111-First connector; 112-First switch clamp; 12-Second connecting branch pipe; 121-Second connector; 122-Second switch clamp; 123-Second switch clamp I; 124-Second switch clamp II; 13-Third connecting branch pipe; 131-Third connector; 132-Third switch clamp; 14-Fourth connecting branch pipe; 141-Fourth connector; 142-Fourth switch clamp; 15-Fifth connecting branch pipe; 151-Fifth connector; 152-Fifth switch clamp; 16-Parallel connecting branch pipe; 161-Parallel switch clamp; 17-Artery connecting branch pipe; 171-Artery connector; 18-Waste liquid bag connecting pipe; 181-Waste liquid bag connector; 182-Waste liquid switch clamp; 20-Artery tube; 30-Vein. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0024] Example 1

[0025] (1) First implementation method like Figure 2 As shown, the blood purification assembly of this embodiment includes an perfusion device 1, a dialyzer 2, and a blood purification connecting tube. The perfusion device 1 has a first end interface and a second end interface at its first and second ends, respectively, and the first end of the perfusion device 1 has a first multi-functional interface. Depending on the needs, the first multi-functional interface can be used for pre-flushing and venting, blood sampling during treatment, drug administration, or fluid infusion during blood return operations on the perfusion device 1. The dialyzer 2 has an arterial interface and a venous interface at both ends, respectively.

[0026] The blood purification connecting tube of this embodiment includes a main connecting tube 10, and a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Specifically, the second end of the main connecting tube 10 is provided with a main connector 101 for connecting to the arterial interface of the dialyzer 2. The end of the first connecting branch tube 11 is provided with a first connector 111 for connecting to the first end interface of the perfusion device 1, and a first switch clamp 112 is provided on the first connecting branch tube 11. The second connecting branch tube 12 is provided with a second connector 121 for connecting to the first multi-functional interface of the perfusion device 1 or the waste liquid bag 3, and a second switch clamp 122 is provided on the second connecting branch tube 12.

[0027] In this embodiment, the second connecting branch 12 is used to connect to the first multi-functional interface of the perfusion device 1. The main connector 101 on the main connecting pipe 10 is connected to the arterial interface of the dialyzer 2, the first connector 111 on the first connecting branch 11 is connected to the first end interface of the perfusion device 1, and the second connector 121 on the second connecting branch 12 is connected to the first multi-functional interface of the perfusion device 1. The second end interface of the perfusion device 1 is connected to an arterial tube 20. The venous interface of the dialyzer 2 is connected to a venous tube 30. The main connector 101 and the first connector 111 both use standard blood circuit connectors for hemodialysis tubing products, which are Luer Lock connectors; while the second connector 121 can use a Luer Slip connector.

[0028] The blood purification assembly of this embodiment employs a blood purification connecting tube and provides a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Thus, the main connector 101 on the main connecting tube 10 can connect to the arterial interface of the dialyzer 2, the first connector 111 on the first connecting branch tube 11 can connect to the first end interface of the perfusion device 1, and the second connector 121 on the second connecting branch tube 12 can connect to the first multi-functional interface of the perfusion device 1. In other words, the blood purification assembly of this embodiment can meet the connection requirements even when the first end of the perfusion device 1 has a first multi-functional interface, facilitating air venting from the perfusion device 1 during pre-charging.

[0029] In some other embodiments, the second connecting branch 12 can also be used to connect to the waste liquid bag 3, such as... Figure 3 As shown.

[0030] (2) Second implementation method like Figure 4-5 As shown, the blood purification assembly of this embodiment includes an perfusion device 1, a dialyzer 2, and a blood purification connecting tube. The perfusion device 1 has a first end interface and a second end interface at its first and second ends, respectively, and the first and second ends of the perfusion device 1 also have a first multi-functional interface and a second multi-functional interface. The second multi-functional interface has the same function as the first multi-functional interface. The dialyzer 2 has an arterial interface and a venous interface at its two ends, respectively.

[0031] The blood purification connecting tube of this embodiment includes a main connecting tube 10, and a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Specifically, the second end of the main connecting tube 10 is provided with a main connector 101 for connecting to the arterial interface of the dialyzer 2. The end of the first connecting branch tube 11 is provided with a first connector 111 for connecting to the first end interface of the perfusion device 1, and a first switch clamp 112 is provided on the first connecting branch tube 11. The second connecting branch tube 12 is provided with a second connector 121 for connecting to the first multi-functional interface of the perfusion device 1, and a second switch clamp 122 is provided on the second connecting branch tube 12.

[0032] The blood purification connecting tube in this embodiment further includes a third connecting branch tube 13, which is connected to the main connecting tube 10 or the second connecting branch tube 12. Figure 4 As shown, the third connecting branch pipe 13 is connected to the connecting main pipe 10, as follows: Figure 5 As shown, the third connecting branch pipe 13 can also be connected to the second connecting branch pipe 12. The end of the third connecting branch pipe 13 is provided with a third connector 131 for connecting to the second multi-functional interface of the irrigation device 1. The third connector 131 is the same as the second connector 121, and the third connecting branch pipe 13 is also provided with a third switch clip 132.

[0033] The main connector 101 on the main connecting tube 10 is connected to the arterial interface of the dialyzer 2. The first connector 111 on the first connecting branch tube 11 is connected to the first end interface of the perfusion device 1. The second connector 121 on the second connecting branch tube 12 is connected to the first multi-functional interface of the perfusion device 1. The third connector 131 on the third connecting branch tube 13 is connected to the second multi-functional interface of the perfusion device 1. The second end interface of the perfusion device 1 is connected to an arterial tube 20. The venous interface of the dialyzer 2 is connected to a venous tube 30.

[0034] The blood purification assembly of this embodiment uses blood purification connecting pipes. A main connector 101 on the main connecting pipe 10 can connect to the arterial interface of the dialyzer 2. A first connector 111 on the first connecting branch pipe 11 can connect to the first end interface of the perfusion device 1. A second connector 121 on the second connecting branch pipe 12 can connect to the first multi-functional interface of the perfusion device 1. A third connector 131 on the third connecting branch pipe 13 can connect to the second multi-functional interface of the perfusion device 1. In other words, the blood purification assembly of this embodiment can meet the connection requirements even when the first end of the perfusion device 1 has both a first multi-functional interface and a second multi-functional interface, facilitating air venting during pre-charging of the perfusion device 1.

[0035] (3) Third implementation method like Figure 6As shown, the blood purification assembly of this embodiment includes an perfusion device 1, a dialyzer 2, a waste fluid bag 3, and a blood purification connecting tube. The perfusion device 1 has a first end interface and a second end interface at its first and second ends, respectively, and the first end of the perfusion device 1 has a first multi-functional interface. The dialyzer 2 has an arterial interface and a venous interface at its two ends, respectively.

[0036] The blood purification connecting tube of this embodiment includes a main connecting tube 10, and a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Specifically, the second end of the main connecting tube 10 is provided with a main connector 101 for connecting to the arterial interface of the dialyzer 2, and a main switch clamp 102 is provided on the main connecting tube 10. The end of the first connecting branch tube 11 is provided with a first connector 111 for connecting to the first end interface of the perfusion device 1, and a first switch clamp 112 is provided on the first connecting branch tube 11. The second connecting branch tube 12 is provided with a second connector 121 for connecting to the first multi-functional interface of the perfusion device 1, and a second switch clamp 122 is provided on the second connecting branch tube 12.

[0037] The blood purification connecting tube in this embodiment also includes a waste liquid bag connecting tube 18, which is connected to the main connecting tube 10 or the second connecting branch tube 12. In this embodiment, the waste liquid bag connecting tube 18 is connected to the main connecting tube 10. The end of the waste liquid bag connecting tube 18 is provided with a waste liquid bag connector 181 for connecting to the waste liquid bag 3, and a waste liquid switch clamp 182 is provided on the waste liquid bag connecting tube 18.

[0038] The main connector 101 on the connecting main tube 10 is connected to the arterial interface of the dialyzer 2. The first connector 111 on the first connecting branch tube 11 is connected to the first end interface of the perfusion device 1. The second connector 121 on the second connecting branch tube 12 is connected to the first multi-functional interface of the perfusion device 1. The waste bag connector 181 on the waste bag connecting tube 18 is connected to the waste bag 3. The second end interface of the perfusion device 1 is connected to the arterial tube 20. The venous interface of the dialyzer 2 is connected to the venous tube 30.

[0039] The blood purification assembly of this embodiment employs a blood purification connecting tube and provides a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Thus, the main connector 101 on the main connecting tube 10 can connect to the arterial interface of the dialyzer 2, the first connector 111 on the first connecting branch tube 11 can connect to the first end interface of the perfusion device 1, and the second connector 121 on the second connecting branch tube 12 can connect to the first multi-functional interface of the perfusion device 1. In other words, the blood purification assembly of this embodiment can meet the connection requirements even when the first end of the perfusion device 1 has a first multi-functional interface, facilitating air venting from the perfusion device 1 during pre-charging.

[0040] By setting a waste liquid bag connecting pipe 18 to the main connecting pipe 10 or the second connecting branch pipe 12, and connecting the waste liquid bag 3 through the waste liquid bag connector 181 set on the waste liquid bag connecting pipe 18, when pre-filling the perfusion device 1 alone, the main switch clamp 102 and the first switch clamp 112 are closed, and the second switch clamp 122 and the waste liquid switch clamp 182 are opened. That is, the perfusion device 1 can be pre-filled alone through the second connecting branch pipe 12 connected to the first multi-functional interface of the perfusion device 1 and the waste liquid bag connecting pipe 18 connected to the waste liquid bag 3. The pre-filling waste liquid of the perfusion device will not flow into the dialyzer, preventing fine particles (such as adsorbent fragments) that may exist in the pre-filling waste liquid from clogging the hollow fiber membrane pores of the dialyzer.

[0041] (4) Fourth implementation method like Figure 7-8 As shown, the blood purification assembly of this embodiment includes an perfusion device 1, a dialyzer 2, and a blood purification connecting tube. The perfusion device 1 has a first end interface and a second end interface at its first and second ends, respectively, and also has a first multi-functional interface and a second multi-functional interface at its first and second ends. The dialyzer 2 has an arterial interface and a venous interface at its two ends, respectively.

[0042] The blood purification connecting tube of this embodiment includes a main connecting tube 10, and a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Specifically, the second end of the main connecting tube 10 is provided with a main connector 101 for connecting to the arterial interface of the dialyzer 2. The end of the first connecting branch tube 11 is provided with a first connector 111 for connecting to the first end interface of the perfusion device 1, and a first switch clamp 112 is provided on the first connecting branch tube 11. The second connecting branch tube 12 is provided with a second connector 121 for connecting to the first multi-functional interface of the perfusion device 1, and a second switch clamp 122 is provided on the second connecting branch tube 12.

[0043] The blood purification connecting tube in this embodiment further includes a third connecting branch tube 13, which is connected to the main connecting tube 10 or the second connecting branch tube 12. In this embodiment, the third connecting branch tube 13 can also be connected to the second connecting branch tube 12. The end of the third connecting branch tube 13 is provided with a third connector 131 for connecting to the second multi-functional interface of the perfusion device 1, and the third connecting branch tube 13 is also provided with a third switch clamp 132.

[0044] The blood purification connecting tube in this embodiment also includes a waste liquid bag connecting tube 18, which is connected to the main connecting tube 10 or the second connecting branch tube 12, such as... Figure 7 As shown, the waste liquid bag connecting pipe 18 is connected to the second connecting branch pipe 12, as follows: Figure 8As shown, the waste liquid bag connecting pipe 18 is connected to the connecting main pipe 10. The end of the waste liquid bag connecting pipe 18 is provided with a waste liquid bag connector 181 for connecting with the waste liquid bag 3, and a waste liquid switch clamp 182 is provided on the waste liquid bag connecting pipe 18.

[0045] The main connector 101 on the main connecting pipe 10 is connected to the arterial interface of the dialyzer 2. The first connector 111 on the first connecting branch pipe 11 is connected to the first end interface of the perfusion device 1. The second connector 121 on the second connecting branch pipe 12 is connected to the first multi-functional interface of the perfusion device 1. The third connector 131 on the third connecting branch pipe 13 is connected to the second multi-functional interface of the perfusion device 1. The waste bag connector 181 on the waste bag connecting pipe 18 is connected to the waste bag 3. The second end interface of the perfusion device 1 is connected to the arterial tube 20. The venous interface of the dialyzer 2 is connected to the venous tube 30.

[0046] The blood purification assembly of this embodiment uses blood purification connecting pipes. A main connector 101 on the main connecting pipe 10 can connect to the arterial interface of the dialyzer 2. A first connector 111 on the first connecting branch pipe 11 can connect to the first end interface of the perfusion device 1. A second connector 121 on the second connecting branch pipe 12 can connect to the first multi-functional interface of the perfusion device 1. A third connector 131 on the third connecting branch pipe 13 can connect to the second multi-functional interface of the perfusion device 1. In other words, the blood purification assembly of this embodiment can meet the connection requirements even when the first end of the perfusion device 1 has both a first multi-functional interface and a second multi-functional interface, facilitating air venting during pre-charging of the perfusion device 1.

[0047] By setting a waste liquid bag connecting pipe 18 to the main connecting pipe 10 or the second connecting branch pipe 12, and connecting the waste liquid bag 3 through the waste liquid bag connector 181 set on the waste liquid bag connecting pipe 18, when pre-filling the perfusion device 1 alone, the main switch clamp 102 and the first switch clamp 112 are closed, and the second switch clamp 122, the third switch clamp 132 and the waste liquid switch clamp 182 are opened. That is, the perfusion device 1 can be pre-filled alone through the second connecting branch pipe 12 connected to the first multi-functional interface of the perfusion device 1 and the waste liquid bag connecting pipe 18 connected to the waste liquid bag 3. The pre-filling waste liquid of the perfusion device will not flow into the dialyzer, preventing fine particles (such as adsorbent fragments) that may exist in the pre-filling waste liquid from clogging the hollow fiber membrane pores of the dialyzer.

[0048] Example 2

[0049] (1) First implementation method like Figure 9-10As shown, the blood purification assembly of this embodiment includes an perfusion device 1, a dialyzer 2, and a blood purification connecting tube. The perfusion device 1 has a first end interface and a second end interface at its first and second ends, respectively, and the first end of the perfusion device 1 has a first multi-functional interface. The dialyzer 2 has an arterial interface and a venous interface at its two ends, respectively.

[0050] The blood purification connecting tube of this embodiment includes a main connecting tube 10, and a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Specifically, the second end of the main connecting tube 10 is provided with a main connector 101 for connecting to the arterial interface of the dialyzer 2, and a main switch clamp 102 is provided on the main connecting tube 10. The end of the first connecting branch tube 11 is provided with a first connector 111 for connecting to the first end interface of the perfusion device 1, and a first switch clamp 112 is provided on the first connecting branch tube 11. The second connecting branch tube 12 is provided with a second connector 121 for connecting to the first multi-functional interface of the perfusion device 1.

[0051] The blood purification connecting pipe in this embodiment also includes a waste liquid bag connecting pipe 18, which is connected to the main connecting pipe 10 or the first connecting branch pipe 11, such as... Figure 9 As shown, the waste liquid bag connecting pipe 18 is connected to the first connecting branch pipe 11, as follows: Figure 10 As shown, the waste liquid bag connecting pipe 18 is connected to the connecting main pipe 10. The end of the waste liquid bag connecting pipe 18 is provided with a waste liquid bag connector 181 for connecting with the waste liquid bag 3, and a waste liquid switch clamp 182 is provided on the waste liquid bag connecting pipe 18.

[0052] The blood purification connecting tube in this embodiment further includes a parallel connecting branch tube 16, which is connected to the main connecting tube 10 or the second connecting branch tube 12. In this embodiment, the parallel connecting branch tube 16 is connected to the second connecting branch tube 12. The end of the parallel connecting branch tube 16 is provided with a fourth connecting branch tube 14 and an arterial connecting branch tube 17, which are connected to each other. The end of the fourth connecting branch tube 14 is provided with a fourth connector 141 for connecting to the second end interface of the perfusion device 1, and a fourth switch clamp 142 is provided on the fourth connecting branch tube 14. The end of the arterial connecting branch tube 17 is provided with an arterial connector 171 for connecting to the arterial tube 20, and a parallel switch clamp 161 is provided on the parallel connecting branch tube 16. The second connecting branch pipe 12 is provided with a second switch clamp I 123 and a second switch clamp II 124, wherein the second switch clamp I 123 is located between the second connector 121 and the connection position of the second connecting branch pipe 12 and the parallel connecting branch pipe 16, and the second switch clamp II 124 is located between the connecting main pipe 10 and the connection position of the second connecting branch pipe 12 and the parallel connecting branch pipe 16.

[0053] The main connector 101 on the connecting main tube 10 is connected to the arterial interface of the dialyzer 2. The first connector 111 on the first connecting branch tube 11 is connected to the first end interface of the perfusion device 1. The second connector 121 on the second connecting branch tube 12 is connected to the first multi-functional interface of the perfusion device 1. The fourth connector 141 on the fourth connecting branch tube 14 is connected to the second end interface of the perfusion device 1. The arterial connector 171 on the arterial connecting branch tube 17 is connected to the arterial tube 20. The waste fluid bag connector 181 on the waste fluid bag connecting tube 18 is connected to the waste fluid bag 3. The second end interface of the perfusion device 1 is connected to the arterial tube 20. The venous interface of the dialyzer 2 is connected to the venous tube 30.

[0054] The blood purification assembly of this embodiment uses blood purification connecting pipes. A main connector 101 on the main connecting pipe 10 can connect to the arterial interface of the dialyzer 2. A first connector 111 on the first connecting branch pipe 11 can connect to the first end interface of the perfusion device 1. A second connector 121 on the second connecting branch pipe 12 can connect to the first multi-functional interface of the perfusion device 1. A fourth connector 141 on the fourth connecting branch pipe 14 connects to the second end interface of the perfusion device 1. An arterial connector 171 on the arterial connecting branch pipe 17 connects to the arterial tube 20. In other words, the blood purification assembly of this embodiment can meet the connection requirements even when the first end of the perfusion device 1 has a first multi-functional interface, and facilitates air venting of the perfusion device 1 during pre-charging.

[0055] By setting a parallel connecting branch pipe 16 connected to the main connecting pipe 10 or the second connecting branch pipe 12, and setting a fourth connecting branch pipe 14 and an arterial connecting branch pipe 17 on the parallel connecting branch pipe 16, the fourth connector 141 on the fourth connecting branch pipe 14 is connected to the second end interface of the perfusion device 1, and the arterial connector 171 on the arterial connecting branch pipe 17 is connected to the arterial tube; in this way, opening the fourth switch clamp 142 on the fourth connecting branch pipe 14 can connect the arterial tube 20 to the perfusion device 1, and can also pre-fill the perfusion device 1 and the dialyzer 2 separately, realizing a combined artificial kidney treatment of hemodialysis and hemoperfusion.

[0056] Specifically, when venting and pre-filling the perfusion unit 1 separately, the main switch clamp 102, the first switch clamp 112, and the parallel switch clamp 161 are closed, and the second switch clamp I 123, the second switch clamp II 124, the fourth switch clamp 142, and the waste liquid switch clamp 182 are opened. When pre-filling the dialyzer 2 separately, the first switch clamp 112, the second switch clamp I 123, the fourth switch clamp 142, and the waste liquid switch clamp 182 are closed, and the main switch clamp 102, the second switch clamp II 124, and the parallel switch clamp 161 are opened.

[0057] In addition, during the combined artificial kidney treatment of hemodialysis and hemoperfusion, when the perfusion device 1 is saturated, the first switch clamp 112, the second switch clamp I 123, the fourth switch clamp 142 and the waste liquid switch clamp 182 can be closed, and the main switch clamp 102, the second switch clamp II 124 and the parallel switch clamp 161 can be opened, so that the arterial tube 20 can be directly connected to the dialyzer without disassembling the perfusion device 1 and the tubing, which can effectively prevent the connector from being exposed to the air and prevent the connector from being contaminated.

[0058] (2) Second implementation method like Figure 11-12 As shown, the blood purification assembly of this embodiment includes an perfusion device 1, a dialyzer 2, and a blood purification connecting tube. The perfusion device 1 has a first end interface and a second end interface at its first and second ends, respectively, and also has a first multi-functional interface and a second multi-functional interface at its first and second ends, respectively. The dialyzer 2 has an arterial interface and a venous interface at its two ends, respectively.

[0059] The blood purification connecting tube of this embodiment includes a main connecting tube 10, and a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Specifically, the second end of the main connecting tube 10 is provided with a main connector 101 for connecting to the arterial interface of the dialyzer 2, and a main switch clamp 102 is provided on the main connecting tube 10. The end of the first connecting branch tube 11 is provided with a first connector 111 for connecting to the first end interface of the perfusion device 1, and a first switch clamp 112 is provided on the first connecting branch tube 11. The second connecting branch tube 12 is provided with a second connector 121 for connecting to the first multi-functional interface of the perfusion device 1.

[0060] The blood purification connecting pipe in this embodiment also includes a waste liquid bag connecting pipe 18, which is connected to the main connecting pipe 10 or the first connecting branch pipe 11, such as... Figure 11 As shown, the waste liquid bag connecting pipe 18 is connected to the connecting main pipe 10, as follows: Figure 12 As shown, the waste liquid bag connecting pipe 18 is connected to the first connecting branch pipe 11. The end of the waste liquid bag connecting pipe 18 is provided with a waste liquid bag connector 181 for connecting with the waste liquid bag 3, and a waste liquid switch clamp 182 is provided on the waste liquid bag connecting pipe 18.

[0061] The blood purification connecting tube in this embodiment further includes a parallel connecting branch tube 16, which is connected to the main connecting tube 10 or the second connecting branch tube 12. In this embodiment, the parallel connecting branch tube 16 is connected to the second connecting branch tube 12. The end of the parallel connecting branch tube 16 is provided with a fourth connecting branch tube 14 and an arterial connecting branch tube 17, which are connected to each other. The end of the fourth connecting branch tube 14 is provided with a fourth connector 141 for connecting to the second end interface of the perfusion device 1, and a fourth switch clamp 142 is provided on the fourth connecting branch tube 14. The end of the arterial connecting branch tube 17 is provided with an arterial connector 171 for connecting to the arterial tube 20, and a parallel switch clamp 161 is provided on the parallel connecting branch tube 16.

[0062] In this embodiment, a fifth connecting branch pipe 15 is provided on the parallel connecting branch pipe 16. One end of the fifth connecting branch pipe 15 is connected to the parallel connecting branch pipe 16, and the other end is provided with a fifth connector 151 for connecting to the second multi-functional interface of the irrigation device 1. A fifth switch clamp 152 is also provided on the fifth connecting branch pipe 15.

[0063] In this embodiment, the second connecting branch pipe 12 is provided with a second switch clamp I 123 and a second switch clamp II 124. The second switch clamp I 123 is located between the second connector 121 and the connection position of the second connecting branch pipe 12 and the parallel connecting branch pipe 16, and the second switch clamp II 124 is located between the connecting main pipe 10 and the connection position of the second connecting branch pipe 12 and the parallel connecting branch pipe 16.

[0064] The main connector 101 on the connecting main tube 10 is connected to the arterial interface of the dialyzer 2. The first connector 111 on the first connecting branch tube 11 is connected to the first end interface of the perfusion device 1. The second connector 121 on the second connecting branch tube 12 is connected to the first multi-functional interface of the perfusion device 1. The fourth connector 141 on the fourth connecting branch tube 14 is connected to the second end interface of the perfusion device 1. The arterial connector 171 on the arterial connecting branch tube 17 is connected to the arterial tube 20. The fifth connector 151 on the fifth connecting branch tube 15 is connected to the second multi-functional interface of the perfusion device 1. The waste bag connector 181 on the waste bag connecting tube 18 is connected to the waste bag 3. The arterial connector 171 of the arterial connecting branch tube 17 is connected to the arterial tube 20. The venous interface of the dialyzer 2 is connected to the venous tube 30.

[0065] The blood purification assembly of this embodiment uses blood purification connecting pipes. A main connector 101 on the main connecting pipe 10 can connect to the arterial interface of the dialyzer 2. A first connector 111 on the first connecting branch pipe 11 can connect to the first end interface of the perfusion device 1. A second connector 121 on the second connecting branch pipe 12 can connect to the first multi-functional interface of the perfusion device 1. A fourth connector 141 on the fourth connecting branch pipe 14 connects to the second end interface of the perfusion device 1. An arterial connector 171 on the arterial connecting branch pipe 17 connects to the arterial tube 20. A fifth connector 151 on the fifth connecting branch pipe 15 connects to the second multi-functional interface of the perfusion device 1. In other words, the blood purification assembly of this embodiment can meet the connection requirements even when the first end of the perfusion device 1 has both a first multi-functional interface and a second multi-functional interface, facilitating air venting during pre-charging of the perfusion device 1.

[0066] By setting a parallel connecting branch 16 connected to the second connecting branch 12, and setting a fourth connecting branch 14, a fifth connecting branch 15, and an arterial connecting branch 17 on the parallel connecting branch 16, the fourth connector 141 on the fourth connecting branch 14 is connected to the second end interface of the perfusion device 1, the fifth connector 151 on the fifth connecting branch 15 is connected to the second multi-functional interface of the perfusion device 1, and the arterial connector 171 on the arterial connecting branch 17 is connected to the arterial tube; thus, opening the fourth switch clamp 142 on the fourth connecting branch 14 can connect the arterial tube 20 to the perfusion device 1, and can also pre-fill the perfusion device 1 and the dialyzer 2 separately, realizing a combined artificial kidney treatment of hemodialysis and hemoperfusion.

[0067] Specifically, when venting and pre-charging the perfusion device 1 separately, close the main switch clamp 102, the first switch clamp 112, and the parallel switch clamp 161, and open the second switch clamp I 123, the second switch clamp II 124, the fourth switch clamp 142, the fifth switch clamp 152, and the waste liquid switch clamp 182; after venting is complete, close the fifth switch clamp 152. When pre-charging the dialyzer 2 separately, close the first switch clamp 112, the second switch clamp I 123, the fourth switch clamp 142, the fifth switch clamp 152, and the waste liquid switch clamp 182, and open the main switch clamp 102, the second switch clamp II 124, and the parallel switch clamp 161.

[0068] In addition, during the combined artificial kidney treatment of hemodialysis and hemoperfusion, when the perfusion device 1 is saturated, the first switch clamp 112, the second switch clamp I 123, the fourth switch clamp 142, the fifth switch clamp 152 and the waste liquid switch clamp 182 can be closed, and the main switch clamp 102, the second switch clamp II 124 and the parallel switch clamp 161 can be opened, so that the arterial tube 20 can be directly connected to the dialyzer without disassembling the perfusion device 1 and the tubing, which can effectively prevent the connector from being exposed to the air and prevent the connector from being contaminated.

[0069] (3) Third implementation method like Figure 13-14 As shown, the blood purification assembly of this embodiment includes an perfusion device 1, a dialyzer 2, and a blood purification connecting tube. The perfusion device 1 has a first end interface and a second end interface at its first and second ends, respectively, and the first end of the perfusion device 1 has a first multi-functional interface. The dialyzer 2 has an arterial interface and a venous interface at its two ends, respectively.

[0070] The blood purification connecting tube of this embodiment includes a main connecting tube 10, and a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Specifically, the second end of the main connecting tube 10 is provided with a main connector 101 for connecting to the arterial interface of the dialyzer 2, and a main switch clamp 102 is provided on the main connecting tube 10. The end of the first connecting branch tube 11 is provided with a first connector 111 for connecting to the first end interface of the perfusion device 1, and a first switch clamp 112 is provided on the first connecting branch tube 11. The second connecting branch tube 12 is provided with a second connector 121 for connecting to the first multi-functional interface of the perfusion device 1, and a second switch clamp 122 is provided on the second connecting branch tube 12.

[0071] The blood purification connecting tube in this embodiment also includes a waste liquid bag connecting tube 18, which is connected to the main connecting tube 10, the first connecting branch tube 11, or the second connecting branch tube 12, such as... Figure 13 As shown, the waste liquid bag connecting pipe 18 is connected to the first connecting branch pipe 11 and the second connecting branch pipe 12, as follows: Figure 14 As shown, the waste liquid bag connecting pipe 18 is connected to the connecting main pipe 10. The end of the waste liquid bag connecting pipe 18 is provided with a waste liquid bag connector 181 for connecting with the waste liquid bag 3, and a waste liquid switch clamp 182 is provided on the waste liquid bag connecting pipe 18.

[0072] The blood purification connecting tube in this embodiment further includes a parallel connecting branch tube 16, which is connected to the main connecting tube 10 or the second connecting branch tube 12. In this embodiment, the parallel connecting branch tube 16 is connected to the main connecting tube 10. The end of the parallel connecting branch tube 16 is provided with a fourth connecting branch tube 14 and an arterial connecting branch tube 17, which are connected to each other. The end of the fourth connecting branch tube 14 is provided with a fourth connector 141 for connecting to the second end interface of the perfusion device 1, and a fourth switch clamp 142 is provided on the fourth connecting branch tube 14. The end of the arterial connecting branch tube 17 is provided with an arterial connector 171 for connecting to the arterial tube 20, and a parallel switch clamp 161 is provided on the parallel connecting branch tube 16.

[0073] The main connector 101 on the connecting main tube 10 is connected to the arterial interface of the dialyzer 2. The first connector 111 on the first connecting branch tube 11 is connected to the first end interface of the perfusion device 1. The second connector 121 on the second connecting branch tube 12 is connected to the first multi-functional interface of the perfusion device 1. The fourth connector 141 on the fourth connecting branch tube 14 is connected to the second end interface of the perfusion device 1. The arterial connector 171 on the arterial connecting branch tube 17 is connected to the arterial tube 20. The waste fluid bag connector 181 on the waste fluid bag connecting tube 18 is connected to the waste fluid bag 3. The arterial connector 171 of the arterial connecting branch tube 17 is connected to the arterial tube 20. The venous interface of the dialyzer 2 is connected to the venous tube 30.

[0074] The blood purification assembly of this embodiment uses blood purification connecting pipes. A main connector 101 on the main connecting pipe 10 can connect to the arterial interface of the dialyzer 2. A first connector 111 on the first connecting branch pipe 11 can connect to the first end interface of the perfusion device 1. A second connector 121 on the second connecting branch pipe 12 can connect to the first multi-functional interface of the perfusion device 1. A fourth connector 141 on the fourth connecting branch pipe 14 connects to the second end interface of the perfusion device 1. An arterial connector 171 on the arterial connecting branch pipe 17 connects to the arterial tube 20. In other words, the blood purification assembly of this embodiment can meet the connection requirements even when the first end of the perfusion device 1 has a first multi-functional interface, and facilitates air venting of the perfusion device 1 during pre-charging.

[0075] By setting a parallel connecting branch pipe 16 connected to the main connecting pipe 10, and setting a fourth connecting branch pipe 14 and an arterial connecting branch pipe 17 on the parallel connecting branch pipe 16, the fourth connector 141 on the fourth connecting branch pipe 14 is connected to the second end interface of the perfusion device 1, and the arterial connector 171 on the arterial connecting branch pipe 17 is connected to the arterial tube; thus, by opening the fourth switch clamp 142 on the fourth connecting branch pipe 14, the arterial tube 20 can be connected to the perfusion device 1, and the perfusion device 1 and the dialyzer 2 can be pre-filled separately, realizing a combined artificial kidney treatment of hemodialysis and hemoperfusion.

[0076] Specifically, when pre-charging the perfusion device 1 separately, the main switch clamp 102, the first switch clamp 112, and the parallel switch clamp 161 are closed, and the second switch clamp 122, the fourth switch clamp 142, and the waste liquid switch clamp 182 are opened. When pre-charging the dialyzer 2 separately, the first switch clamp 112, the second switch clamp 122, the fourth switch clamp 142, and the waste liquid switch clamp 182 are closed, and the main switch clamp 102 and the parallel switch clamp 161 are opened.

[0077] In addition, during the combined artificial kidney treatment of hemodialysis and hemoperfusion, when the perfusion device 1 is saturated, the first switch clamp 112, the second switch clamp 122, the fourth switch clamp 142 and the waste liquid switch clamp 182 can be closed, and the main switch clamp 102 and the parallel switch clamp 161 can be opened, so that the arterial tube 20 can be directly connected to the dialyzer without disassembling the perfusion device 1 and the tubing. This can effectively prevent the connector from being exposed to the air and prevent the connector from being contaminated.

[0078] (4) Fourth implementation method like Figure 15-16 As shown, the blood purification assembly of this embodiment includes an perfusion device 1, a dialyzer 2, and a blood purification connecting tube. The perfusion device 1 has a first end interface and a second end interface at its first and second ends, respectively, and also has a first multi-functional interface and a second multi-functional interface at its first and second ends, respectively. The dialyzer 2 has an arterial interface and a venous interface at its two ends, respectively.

[0079] The blood purification connecting tube of this embodiment includes a main connecting tube 10, and a first connecting branch tube 11 and a second connecting branch tube 12 at the first end of the main connecting tube 10. Specifically, the second end of the main connecting tube 10 is provided with a main connector 101 for connecting to the arterial interface of the dialyzer 2, and a main switch clamp 102 is provided on the main connecting tube 10. The end of the first connecting branch tube 11 is provided with a first connector 111 for connecting to the first end interface of the perfusion device 1, and a first switch clamp 112 is provided on the first connecting branch tube 11. The second connecting branch tube 12 is provided with a second connector 121 for connecting to the first multi-functional interface of the perfusion device 1.

[0080] The blood purification connecting pipe in this embodiment also includes a waste liquid bag connecting pipe 18, which is connected to the main connecting pipe 10 or the first connecting branch pipe 11, such as... Figure 15 As shown, the waste liquid bag connecting pipe 18 is connected to the connecting main pipe 10, as follows: Figure 16 As shown, the waste liquid bag connecting pipe 18 is connected to the first connecting branch pipe 11 and the second connecting branch pipe 12. The end of the waste liquid bag connecting pipe 18 is provided with a waste liquid bag connector 181 for connecting with the waste liquid bag 3, and a waste liquid switch clamp 182 is provided on the waste liquid bag connecting pipe 18.

[0081] The blood purification connecting tube in this embodiment further includes a parallel connecting branch tube 16, which is connected to the main connecting tube 10 or the second connecting branch tube 12. In this embodiment, the parallel connecting branch tube 16 is connected to the main connecting tube 10. The end of the parallel connecting branch tube 16 is provided with a fourth connecting branch tube 14 and an arterial connecting branch tube 17, which are connected to each other. The end of the fourth connecting branch tube 14 is provided with a fourth connector 141 for connecting to the second end interface of the perfusion device 1, and a fourth switch clamp 142 is provided on the fourth connecting branch tube 14. The end of the arterial connecting branch tube 17 is provided with an arterial connector 171 for connecting to the arterial tube 20, and a parallel switch clamp 161 is provided on the parallel connecting branch tube 16.

[0082] In this embodiment, a fifth connecting branch pipe 15 is provided on the parallel connecting branch pipe 16. One end of the fifth connecting branch pipe 15 is connected to the parallel connecting branch pipe 16, and the other end is provided with a fifth connector 151 for connecting to the second multi-functional interface of the irrigation device 1. A fifth switch clamp 152 is also provided on the fifth connecting branch pipe 15.

[0083] The main connector 101 on the connecting main tube 10 is connected to the arterial interface of the dialyzer 2. The first connector 111 on the first connecting branch tube 11 is connected to the first end interface of the perfusion device 1. The second connector 121 on the second connecting branch tube 12 is connected to the first multi-functional interface of the perfusion device 1. The fourth connector 141 on the fourth connecting branch tube 14 is connected to the second end interface of the perfusion device 1. The arterial connector 171 on the arterial connecting branch tube 17 is connected to the arterial tube 20. The fifth connector 151 on the fifth connecting branch tube 15 is connected to the second multi-functional interface of the perfusion device 1. The waste bag connector 181 on the waste bag connecting tube 18 is connected to the waste bag 3. The arterial connector 171 of the arterial connecting branch tube 17 is connected to the arterial tube 20. The venous interface of the dialyzer 2 is connected to the venous tube 30.

[0084] The blood purification assembly of this embodiment uses blood purification connecting pipes. A main connector 101 on the main connecting pipe 10 can connect to the arterial interface of the dialyzer 2. A first connector 111 on the first connecting branch pipe 11 can connect to the first end interface of the perfusion device 1. A second connector 121 on the second connecting branch pipe 12 can connect to the first multi-functional interface of the perfusion device 1. A fourth connector 141 on the fourth connecting branch pipe 14 connects to the second end interface of the perfusion device 1. An arterial connector 171 on the arterial connecting branch pipe 17 connects to the arterial tube 20. A fifth connector 151 on the fifth connecting branch pipe 15 connects to the second multi-functional interface of the perfusion device 1. In other words, the blood purification assembly of this embodiment can meet the connection requirements even when the first end of the perfusion device 1 has both a first multi-functional interface and a second multi-functional interface, facilitating air venting during pre-charging of the perfusion device 1.

[0085] By setting a parallel connecting branch 16 connected to the second connecting branch 12, and setting a fourth connecting branch 14, a fifth connecting branch 15, and an arterial connecting branch 17 on the parallel connecting branch 16, the fourth connector 141 on the fourth connecting branch 14 is connected to the second end interface of the perfusion device 1, the fifth connector 151 on the fifth connecting branch 15 is connected to the second multi-functional interface of the perfusion device 1, and the arterial connector 171 on the arterial connecting branch 17 is connected to the arterial tube; thus, opening the fourth switch clamp 142 on the fourth connecting branch 14 can connect the arterial tube 20 to the perfusion device 1, and can also pre-fill the perfusion device 1 and the dialyzer 2 separately, realizing a combined artificial kidney treatment of hemodialysis and hemoperfusion.

[0086] Specifically, when venting and pre-charging the perfusion device 1 separately, the main switch clamp 102, the first switch clamp 112, and the parallel switch clamp 161 are closed, and the second switch clamp 122, the fourth switch clamp 142, the fifth switch clamp 152, and the waste liquid switch clamp 182 are opened; after venting is completed, the fifth switch clamp 152 is closed, and pre-charging continues. When pre-charging the dialyzer 2 separately, the first switch clamp 112, the second switch clamp 122, the fourth switch clamp 142, the fifth switch clamp 152, and the waste liquid switch clamp 182 are closed, and the main switch clamp 102 and the parallel switch clamp 161 are opened.

[0087] In addition, during the combined artificial kidney treatment of hemodialysis and hemoperfusion, when the perfusion device 1 is saturated, the first switch clamp 112, the second switch clamp 122, the fourth switch clamp 142, the fifth switch clamp 152 and the waste liquid switch clamp 182 can be closed, and the main switch clamp 102 and the parallel switch clamp 161 can be opened, so that the arterial tube 20 can be directly connected to the dialyzer without disassembling the perfusion device 1 and the tubing. This can effectively prevent the connector from being exposed to the air and prevent the connector from being contaminated.

[0088] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A connecting tube for blood purification, characterized in that: The system includes a main connecting pipe, a first connecting branch pipe and a second connecting branch pipe at the first end of the main connecting pipe, and a main connector at the second end of the main connecting pipe for connecting to the arterial interface of a dialyzer. The end of the first connecting branch pipe is provided with a first connector for connecting to the first end interface of an perfusion device. The second connecting branch pipe is provided with a second connector for connecting to the first multi-functional interface of the perfusion device or a waste fluid bag. When the second connector is connected to the first multi-functional interface, the blood purification connecting pipe also includes a waste fluid bag connecting pipe, which is connected to the main connecting pipe, the first connecting branch pipe or the second connecting branch pipe, and the end of the waste fluid bag connecting pipe is provided with a waste fluid bag connector for connecting to a waste fluid bag.

2. The connecting tube for blood purification according to claim 1, characterized in that: It also includes a third connecting branch pipe, which is connected to the main connecting pipe or the second connecting branch pipe, and the end of the third connecting branch pipe is provided with a third connector for connecting to the second multi-functional interface of the irrigation device.

3. The connecting tube for blood purification according to claim 1, characterized in that: It also includes a parallel connecting branch pipe, which is connected to the main connecting pipe or the second connecting branch pipe; the end of the parallel connecting branch pipe is provided with a fourth connecting branch pipe and an arterial connecting branch pipe, the end of the fourth connecting branch pipe is provided with a fourth connector for connecting to the second end interface of the perfusion device, and the end of the arterial connecting branch pipe is provided with an arterial connector for connecting to the arterial tube.

4. The connecting tube for blood purification according to claim 3, characterized in that: The parallel connecting branch pipe is provided with a fifth connecting branch pipe. One end of the fifth connecting branch pipe is connected to the parallel connecting branch pipe, and the other end is provided with a fifth connector for connecting to the second multi-functional interface of the irrigation device.

5. A blood purification component, characterized in that: The device includes an perfusion apparatus, a dialyzer, and a connecting tube for blood purification as described in any one of claims 1-4; the perfusion apparatus has a first end interface and a second end interface at its first end and a first multi-functional interface at its first end; the dialyzer has an arterial interface and a venous interface at its two ends. The main connector on the connecting tube is connected to the arterial interface of the dialyzer; the first connector on the first connecting branch tube is connected to the first end interface of the perfusion device; the second connector on the second connecting branch tube is connected to the first multi-functional interface of the perfusion device; the second end interface of the perfusion device is connected to an arterial tube; and the venous interface of the dialyzer is connected to a venous tube.

6. The blood purification component according to claim 5, characterized in that: The second end of the perfusion device is provided with a second multi-functional interface; the blood purification connecting tube also includes a third connecting branch tube, which is connected to the main connecting tube or the second connecting branch tube, and the end of the third connecting branch tube is provided with a third connector, which is connected to the second multi-functional interface of the perfusion device.

7. The blood purification component according to claim 5, characterized in that: The second end of the perfusion device is provided with a second multi-functional interface; the blood purification connecting tube also includes a parallel connecting branch tube, which is connected to the main connecting tube or the second connecting branch tube; the end of the parallel connecting branch tube is provided with a fourth connecting branch tube and an arterial connecting branch tube, the end of the fourth connecting branch tube is provided with a fourth connector, and the end of the arterial connecting branch tube is provided with an arterial connector; the fourth connector is connected to the second end interface of the perfusion device, and the arterial connector is connected to the arterial tube.

8. The blood purification component according to claim 7, characterized in that: The parallel connecting branch pipe is provided with a fifth connecting branch pipe. One end of the fifth connecting branch pipe is connected to the parallel connecting branch pipe, and the other end is provided with a fifth connector. The fifth connector is connected to the second multi-functional interface of the irrigation device.

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