Device capable of detecting sealing performance of blood circulation pipeline

Abstract

The utility model relates to the technical field of blood purification, and particularly discloses a device capable of detecting the sealing performance of a blood circulation pipeline, which comprises an artery blood loop, a vein blood loop, an extramembranous pump front loop, an extramembranous pump rear loop, in-vitro treatment consumables and an adsorption column, the input end and the output end of the extracorporeal treatment consumable are respectively connected with the artery blood loop and the vein blood loop, the input end of the extracorporeal pump front loop is connected with a side end interface of the extracorporeal treatment consumable, the output end of the extracorporeal pump front loop is connected with the input end of the extracorporeal pump rear loop, and the output end of the extracorporeal pump rear loop is connected with the input end of the vein blood loop; the artery blood loop is provided with a pipeline clamp, a pressure monitoring device and a power pump; the vein blood loop is provided with a pressure monitoring device and a pipeline clamp. According to the scheme, leakage detection can be carried out on the extracorporeal circulation pipeline, the pipeline section where leakage occurs can be accurately positioned, and the problems that an existing extracorporeal circulation pipeline leakage detection process is complex, and leakage sites cannot be accurately positioned are solved.

Description

Technical Field

[0001] The present application relates to the field of blood purification, and in particular to a device capable of detecting the sealing performance of a blood circulation pipeline. Background Art

[0002] With the continuous development of my country's social economy, the application of blood purification treatment models is becoming increasingly widespread. As a treatment method, blood purification mainly removes certain pathogenic substances (toxins) from the patient's blood by drawing it out of the body through specific instruments or methods, thereby purifying the blood and treating the disease.

[0003] Blood purification usually requires connecting a blood purification device to establish an extracorporeal circulation circuit. Under the current treatment model, the extracorporeal circulation circuit is manually installed on the treatment equipment by medical staff and then physically connected to the patient. However, during the installation of the extracorporeal circulation circuit, it is difficult to effectively judge whether the extracorporeal circulation circuit connection is firm and whether the interface is airtight. If the extracorporeal circuit is not sealed due to incorrect installation or loose connection, then during the extracorporeal circulation treatment, there may be situations such as leakage, disconnection or incorrect connection of the extracorporeal pathway, which may cause the patient's blood to be lost outside the body.

[0004] Therefore, determining whether the installation and connection of the extracorporeal circulation circuit have good sealing plays a vital role in improving the safety of extracorporeal treatment. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a device for detecting the sealing of blood circulation tubing, which is used to check the sealing condition of blood circulation tubing and accurately locate the local unsealed position. This solves the problem that existing extracorporeal circulation tubing cannot be tested for sealing and cannot accurately locate the leakage position.

[0006] To achieve the above technical objectives, the present application provides a device for detecting the sealing of blood circulation pipelines, comprising an arterial blood circuit 1, a venous blood circuit 2, an extramural pump front circuit 3, an extramural pump back circuit 4, an extracorporeal treatment consumable 5, and an adsorption column 6; the input end of the extracorporeal treatment consumable 5 is detachably connected to the output end of the arterial blood circuit 1, and the output end of the extracorporeal treatment consumable 5 is detachably connected to the input end of the venous blood circuit 2, characterized in that:

[0007] The input end of the extracellular pump front loop 3 is detachably connected to the side interface of the extracorporeal treatment consumable 5, and the output end of the extracellular pump front loop 3 is connected to the input end of the extracellular pump rear loop 4;

[0008] The extramembrane pump back loop 4 is provided with an adsorption column 6, and the output end of the extramembrane pump back loop 4 is detachably connected to the input end of the venous blood loop 2;

[0009] A first pipeline clamp 11, a first pressure monitoring device 12, and a first power pump 7 are sequentially provided along the input end of the arterial blood circuit 1 to the output end connected to the extracorporeal treatment consumables 5;

[0010] A second pressure monitoring device 22 and a second pipeline clamp 21 are sequentially provided along the path from the extracorporeal treatment consumables 5 to the output end of the venous blood circuit 2 .

[0011] Furthermore, a third pipe clamp 31 and a pressure monitoring device 32 are connected in sequence along the input end of the extramembranous pump front loop 3 to the output end of the extramembranous pump front loop 3, and a second power pump 8 is also provided at the connection between the end of the extramembranous pump front loop 3 and the extramembranous pump rear loop 4; the extramembranous pump rear loop 4 is also provided with a fourth pipe clamp 41 and a fourth pressure monitoring device 42, and a fourth pressure monitoring device 42, an adsorption column 6, and a fourth pipe clamp 41 are arranged in sequence along the input end of the extramembranous pump front loop 3 to the output end of the extramembranous pump rear loop 4.

[0012] Furthermore, the detachable connection includes one of a Luer connector connection and a threaded connection.

[0013] Furthermore, the output end of the extramembrane pump back circuit 4 is connected to the input end of the venous blood circuit 2 by a collecting pipe.

[0014] Furthermore, the output end of the extramembrane pump rear circuit 4 and the input end of the venous blood circuit 2 are connected by a Y-shaped collecting pipe.

[0015] Furthermore, the first pressure monitoring device 12 is detachably connected to the arterial blood circuit 1; the second pressure monitoring device 22 is detachably connected to the venous blood circuit 2; the third pressure monitoring device 32 is detachably connected to the extramembranous pump front circuit 3; and the fourth pressure monitoring device 42 is detachably connected to the extramembranous pump rear circuit 4.

[0016] Furthermore, the detachable connection is one of a Luer connector connection and a threaded connection.

[0017] Furthermore, the Luer connector connection is a three-way Luer connector connection.

[0018] Furthermore, the extracorporeal treatment consumable 5 is a plasma separator.

[0019] Furthermore, the materials of the arterial blood circuit 1, the venous blood circuit 2, the extramembrane pump front circuit 3, and the extramembrane pump rear circuit 4 are all polyvinyl chloride or polyurethane.

[0020] In summary, the present application provides a device that can detect the sealing of blood circulation pipelines, including: an arterial blood circuit 1, a venous blood circuit 2, an extramembrane pump front circuit 3, an extramembrane pump back circuit 4, an extracorporeal treatment consumable 5, and an adsorption column 6; the input end of the extracorporeal treatment consumable 5 is detachably connected to the output end of the arterial blood circuit 1, and the output end of the extracorporeal treatment consumable 5 is detachably connected to the input end of the venous blood circuit 2; the input end of the extracorporeal pump front circuit 3 is detachably connected to the side interface of the extracorporeal treatment consumable 5, and the output end of the extracorporeal pump front circuit 3 is connected to the input end of the extracorporeal pump back circuit 4; the extracorporeal pump back circuit 4 is provided with an adsorption column 6, and the output end of the extracorporeal pump back circuit 4 is detachably connected to the input end of the venous blood circuit 2; a first pipeline clamp 11, a first pressure monitoring device 12, and a first power pump 7 are provided in sequence along the input end of the arterial blood circuit 1 to the extracorporeal treatment consumable 5; a second pressure monitoring device 22 and a second pipeline clamp 21 are provided in sequence along the extracorporeal treatment consumable 5 to the output end of the venous blood circuit 2. The device for detecting the tightness of blood circulation tubing provided in this application can quickly detect leaks in extracorporeal circulation tubing and accurately locate leaking tubing sections. Compared with existing technologies, the device in this application has a simple structure, is easy to operate, and can accurately locate leaking tubing sections in a short time, solving the problem of the complex leak detection process and the inability to accurately locate the leak site in existing extracorporeal circulation tubing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 A schematic structural diagram of a device capable of detecting the sealing of a blood circulation pipeline provided in an embodiment of the present application;

[0023] In the figure: 1 arterial blood circuit, 11 first tube clamp, 12 first pressure monitor, 2 venous blood circuit, 21 second tube clamp, 22 second pressure monitor, 3 extramembrane pump front circuit, 31 third tube clamp, 32 third pressure monitor, 4 extramembrane pump rear circuit, 41 fourth tube clamp, 42 fourth pressure monitor, 5 extracorporeal treatment consumables, 6 adsorption column, 7 first power pump, 8 second power pump. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions of the embodiments of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection requested by this application.

[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application.

[0027] Example 1, see Figure 1 The embodiment of the utility model provides a device capable of detecting the sealing of a blood circulation pipeline, comprising an arterial blood circuit 1, a venous blood circuit 2, an extramembrane pump front circuit 3, an extramembrane pump back circuit 4, an in vitro treatment consumable 5, and an adsorption column 6;

[0028] The input end of the extracorporeal treatment consumable 5 is detachably connected to the output end of the arterial blood circuit 1 , and the output end of the extracorporeal treatment consumable 5 is detachably connected to the input end of the venous blood circuit 2 ;

[0029] The input end of the extracellular pump front loop 3 is detachably connected to the side interface of the extracorporeal treatment consumable 5, and the output end of the extracellular pump front loop 3 is connected to the input end of the extracellular pump rear loop 4;

[0030] The extramembrane pump back loop 4 is provided with an adsorption column 6, and the output end of the extramembrane pump back loop 4 is detachably connected to the input end of the venous blood loop 2;

[0031] A first pipeline clamp 11, a first pressure monitoring device 12, and a first power pump 7 are sequentially provided along the input end of the arterial blood circuit 1 to the output end connected to the extracorporeal treatment consumables 5; a second pressure monitoring device 22 and a second pipeline clamp 21 are sequentially provided along the extracorporeal treatment consumables 5 to the output end of the venous blood circuit 2.

[0032] It should be noted that the first pipeline clamp 11 can close and open the arterial blood circuit 1 to control the input of liquid, and the first pressure monitoring device 12 is used to monitor the pressure changes inside the arterial blood circuit 1; the second pipeline clamp 21 can close and open the venous blood circuit 2 to control the output of liquid, and the second pressure monitoring device 22 is used to monitor the pressure changes inside the venous blood circuit 2.

[0033] Based on the above structure, when it is necessary to test the sealing of the circulation pipeline, open all the pipeline clamps, start the power pump, fill the extracorporeal circulation pipeline with flushing fluid, and maintain the operating state; when testing the arterial blood circuit 1, close the first pipeline clamp 11 of the arterial blood circuit 1. At this time, the flushing fluid in the arterial blood circuit 1 is discharged by the power pump 7, and the internal pressure of the arterial blood circuit 1 is reduced. When the pressure detected by the first pressure monitoring device 12 reaches the preset pressure, turn off the first power pump 7 and record the pressure value detected by the first pressure monitoring device 12 at this time as the first pressure. After a certain period of time, the pressure value detected by the first pressure monitoring device 12 is recorded again and set as the second pressure; when the difference between the first pressure and the second pressure is less than 15 mmHg, the sealing of this section of the pipeline is strong, and the connection between the arterial blood circuit 1 and the first power pump 7 is reliable. When leak testing the venous blood circuit 2, the second line clamp 21 of the venous blood circuit 2 is closed. Flushing fluid is then introduced into the venous blood circuit 2, and the internal pressure of the line begins to increase. When the pressure detected by the second pressure monitoring device 22 reaches the preset pressure, the first and second power pumps 7 and 8 are closed, and the pressure value detected by the second pressure monitoring device 22 is recorded as the first pressure. After a certain period of time, the pressure value detected by the second pressure monitoring device 22 is recorded again and set as the second pressure. When the difference between the first and second pressures is less than 15 mmHg, the sealing of this section of the line is strong, and the connection between the first power pump 7, the extracorporeal treatment consumables 5, and the venous blood circuit 2 is reliable. If the difference between the first and second pressures is greater than or equal to 15 mmHg, the line clamp is opened to release the residual pressure in the line, and the test is repeated. If the above conditions are not met twice or more, the line connection needs to be adjusted and the test repeated until the conditions are met.

[0034] In some embodiments, a third pipe clamp 31 and a pressure monitoring device 32 are connected in sequence along the input end of the extramembranous pump front loop 3 to the output end of the extramembranous pump front loop 3, and a second power pump 8 is also provided at the connection between the end of the extramembranous pump front loop 3 and the extramembranous pump rear loop 4; the extramembranous pump rear loop 4 is also provided with a fourth pipe clamp 41 and a fourth pressure monitoring device 42, and a fourth pressure monitoring device 42, an adsorption column 6, and a fourth pipe clamp 41 are arranged in sequence along the input end of the extramembranous pump front loop 3 to the output end of the extramembranous pump rear loop 4.

[0035] It should be noted that the third pipe clamp 31 can close and open the extramembranous pump front circuit 3 to control the input of liquid, and the third pressure monitoring device 32 is used to monitor the pressure changes inside the extramembranous pump front circuit 3; the fourth pipe clamp 41 can close and open the extramembranous pump rear circuit 4 to control the output of liquid, and the fourth pressure monitoring device 42 is used to monitor the pressure changes inside the extramembranous pump rear circuit 4.

[0036] Based on the above structure, when it is necessary to test the sealing of the circulation pipeline, open all the pipeline clamps of the pipeline, start the power pump, fill the extracorporeal circulation pipeline with flushing fluid, and maintain the operating state; when it is necessary to check for leaks in the extramembrane pump front loop 3: close the third pipeline clamp 31 of the extramembrane pump front loop 3. At this time, the flushing fluid in the extramembrane pump front loop 3 is discharged, and the inside of the extramembrane pump front loop 3 is in a negative pressure state. When the pressure detected by the third pressure monitoring device 32 reaches the preset pressure, turn off the second power pump 8 and record the pressure value detected by the third pressure monitoring device 32 at this time as the first pressure. After a certain period of time, record the pressure value detected by the second pressure monitoring device 22 again and set it to the second pressure; when the difference between the first pressure and the second pressure is less than 15 mmHg, the sealing of this section of the pipeline is relatively strong, and the connection between the extramembrane pump front loop 3 and the second power pump 8 is reliable. When leak testing is required for the extramembrane pump rear loop 4, the fourth pipe clamp 41 of the extramembrane pump rear loop 4 is closed. Flushing fluid is then introduced into the extramembrane pump rear loop 4, and the internal pressure of the extramembrane pump rear loop 4 begins to increase. When the pressure detected by the fourth pressure monitoring device 42 reaches the preset pressure, the second power pump 8 is closed and the pressure value detected by the second pressure monitoring device 42 is recorded as the first pressure. After a certain period of time, the pressure value detected by the second pressure monitoring device 42 is recorded again and set as the second pressure. When the difference between the first and second pressures is less than 15 mmHg, the sealing of this section of the pipeline is strong, and the connection between the second power pump 8, the adsorption column 6, and the extramembrane pump rear loop 4 is reliable. If the difference between the first and second pressures is greater than or equal to 15 mmHg, the pipe clamp is opened to release the residual pressure in the pipeline, and the inspection is repeated. If the above conditions are not met twice or more, the pipeline connection needs to be adjusted and the test repeated until the conditions are met.

[0037] In some embodiments, the detachable connection comprises one of a Luer connection and a threaded connection.

[0038] Specifically, the conical design of the Luer connector allows for a tight connection between the connectors. Combined with sealing elements such as sealing rings or gaskets, it provides a reliable seal, effectively preventing blood leakage and gas from entering the tubing system. Furthermore, during extracorporeal circulation, the tubing system may be affected by factors such as pressure fluctuations and vibration. The Luer connector's sealing performance can remain stable under these conditions, ensuring safe extracorporeal circulation. Furthermore, the Luer connector and threaded connection enable quick and convenient connection and disconnection, allowing medical personnel to quickly adjust and replace equipment in emergency situations, improving operational flexibility and efficiency.

[0039] In some embodiments, the output end of the extramembrane pump back circuit 4 and the input end of the venous blood circuit 2 are connected by a collecting tube.

[0040] Preferably, the output end of the extramembrane pump back loop 4 and the input end of the venous blood loop 2 are connected by a Y-shaped collecting pipe, which can collect and accommodate the solutions transported from the extramembrane pump back loop 4 and the venous blood loop 2.

[0041] In some embodiments, the first pressure monitoring device 12 is detachably connected to the arterial blood circuit 1; the second pressure monitoring device 22 is detachably connected to the venous blood circuit 2; the third pressure monitoring device 32 is detachably connected to the extramembranous pump front circuit 3; and the fourth pressure monitoring device 42 is detachably connected to the extramembranous pump rear circuit 4.

[0042] During installation, the detachable connection allows the pressure detector to be easily installed on the pipeline at different locations according to actual needs; especially for complex piping systems, it can be flexibly adjusted according to the selection of monitoring points to improve installation efficiency.

[0043] Preferably, the detachable connection is a Luer connector connection or a threaded connection. Using either the Luer connector connection or the threaded connection uniformly during testing can prevent different connection methods from affecting the pressure test results, further improving the accuracy and reliability of the test results.

[0044] Furthermore, the Luer connector is a three-way Luer connector. The three-way Luer connector can be connected to the pressure detector and pipeline at the same time. During the pressure test process, other monitoring equipment can be easily introduced or samples can be collected without frequent disassembly and reconnection of the pipeline. The connection direction and position of the three-way connector can also be flexibly adjusted according to actual testing needs to adapt to different pipeline layouts and testing scenarios.

[0045] In some embodiments, the extracorporeal treatment consumable 5 is a plasma separator.

[0046] In some embodiments, the arterial blood circuit 1, the venous blood circuit 2, the extramembrane pump front circuit 3, and the extramembrane pump rear circuit 4 are all made of polyvinyl chloride or polyurethane, so that during the leak detection process, they are not easily deformed due to changes in internal pressure of the pipeline, thereby affecting the accuracy of the detection results.

[0047] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the aforementioned examples or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A device capable of detecting the sealing property of a blood circulation pipeline, comprising an arterial blood circuit (1), a venous blood circuit (2), an extramembrane pump front circuit (3), an extramembrane pump back circuit (4), an extracorporeal treatment consumable (5), and an adsorption column (6); the input end of the extracorporeal treatment consumable (5) is detachably connected to the output end of the arterial blood circuit (1), and the output end of the extracorporeal treatment consumable (5) is detachably connected to the input end of the venous blood circuit (2), characterized in that: The input end of the extramembrane pump front loop (3) is detachably connected to the side interface of the extracorporeal treatment consumable (5), and the output end of the extramembrane pump front loop (3) is connected to the input end of the extramembrane pump rear loop (4); The extramembrane pump back loop (4) is provided with the adsorption column (6), and the output end of the extramembrane pump back loop (4) is detachably connected to the input end of the venous blood loop (2); A first pipeline clamp (11), a first pressure monitoring device (12), and a first power pump (7) are sequentially provided along the input end of the arterial blood circuit (1) to the output end connected to the extracorporeal treatment consumable (5); A second pressure monitoring device (22) and a second pipeline clamp (21) are sequentially provided along the path from the extracorporeal treatment consumable (5) to the output end of the venous blood circuit (2).

2. The device for detecting the sealing property of a blood circulation pipeline according to claim 1, characterized in that: A third pipe clamp (31) and a third pressure monitoring device (32) are connected in sequence along the input end of the extramembrane pump front loop (3) to the output end of the extramembrane pump front loop (3), and a second power pump (8) is also provided at the connection between the end of the extramembrane pump front loop (3) and the extramembrane pump rear loop (4); The extramembranous pump rear loop (4) is also provided with a fourth pipe clamp (41) and a fourth pressure monitoring device (42), and the fourth pressure monitoring device (42), the adsorption column (6), and the fourth pipe clamp (41) are sequentially provided along the input end of the extramembranous pump rear loop (4) to the output end of the extramembranous pump rear loop (4).

3. The device for detecting the sealing property of a blood circulation pipeline according to claim 1, characterized in that: The detachable connection includes one or more of a Luer connector connection and a threaded connection.

4. The device for detecting the sealing property of a blood circulation pipeline according to claim 1, characterized in that: The output end of the extramembrane pump rear loop (4) and the input end of the venous blood loop (2) are connected by a collecting pipe.

5. The device for detecting the sealing property of a blood circulation pipeline according to claim 4, characterized in that: The output end of the extramembrane pump rear circuit (4) and the input end of the venous blood circuit (2) are connected by a Y-shaped collecting pipe.

6. The device for detecting the sealing property of a blood circulation pipeline according to claim 2, characterized in that: The first pressure monitoring device (12) is detachably connected to the arterial blood circuit (1); The second pressure monitoring device (22) is detachably connected to the venous blood circuit (2); The third pressure monitoring device (32) is detachably connected to the front circuit (3) of the extramembrane pump; The fourth pressure monitoring device (42) is detachably connected to the extramembrane pump rear circuit (4).

7. The device for detecting the sealing property of a blood circulation pipeline according to claim 6, characterized in that: The detachable connection is one of a Luer connector connection and a threaded connection.

8. The device for detecting the sealing property of a blood circulation pipeline according to claim 7, characterized in that: The Luer connector connection is a three-way Luer connector connection.

9. The device for detecting the sealing property of a blood circulation pipeline according to claim 1, characterized in that: The in vitro treatment consumable (5) is a plasma separator.

10. The device for detecting the sealing property of a blood circulation pipeline according to claim 1, characterized in that: The arterial blood circuit (1), the venous blood circuit (2), the extramembranous pump front circuit (3), and the extramembranous pump rear circuit (4) are all made of polyvinyl chloride or polyurethane.

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