CRRT (continuous renal replacement therapy) non-planned shutdown circulation kit and continuous renal replacement therapy system

Abstract

The utility model provides a CRRT (continuous renal replacement therapy) non-planned shutdown circulation management kit and a continuous renal replacement therapy system, and relates to the field of medical equipment. The CRRT non-planned shutdown circulating tube kit comprises a hemodialysis puncture tube, a three-way valve, a tube sealing assembly and a filtering assembly. The hemodialysis puncture tube is provided with a first blood guide end and a first blood return end, and a first valve port of the three-way valve is communicated with the first blood guide end; the pipe sealing assembly comprises a liquid storage part and a pipe sealing body which communicate with each other. The pipe sealing body communicates with a second valve port of the three-way valve. The filtering assembly comprises a hemodialysis main pipe, and a blood pump and a filter which are mounted on the hemodialysis main pipe; the hemodialysis main pipe is provided with a second blood leading end and a second blood returning end; the second blood leading end is communicated with the tube sealing main body, and the second blood return end is selectively communicated with the first blood return end or a third valve port of the three-way valve. The working state of the kit can be adjusted as required, and the kit is flexible to use, low in use cost, low in operation difficulty and high in treatment efficiency.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and in particular, to a CRRT unplanned shutdown pipe circulation kit and a continuous renal replacement therapy system. Background Art

[0002] Continuous renal replacement therapy (CRRT), also known as continuous blood purification (CBP), is a treatment method that continuously removes various metabolites, toxins, drugs, and pathogenic biomolecules in the body by using principles such as diffusion, convection, and adsorption, regulates body fluid electrolytes and acid-base balance, and protects and supports organ functions. In the prior art, during the process of CRRT for patients, it is possible to face the need to suspend CRRT treatment to perform other item examinations or to suspend it for other reasons, and CRRT needs to be resumed after a period of time.

[0003] In such a situation, if the corresponding kit needs to be replaced due to the suspension reason, it will increase the treatment cost for patients, increase the workload of medical staff, increase the treatment difficulty, and reduce the treatment efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a CRRT unplanned shutdown pipe circulation kit and a continuous renal replacement therapy system, which can reduce the treatment cost, save time and effort, reduce the treatment difficulty, and improve the treatment efficiency.

[0005] The embodiments of the utility model are implemented as follows:

[0006] In a first aspect, the utility model provides a CRRT unplanned shutdown pipe circulation kit, including:

[0007] A hemodialysis puncture tube, a three-way valve, a tube sealing assembly, and a filtering assembly; the hemodialysis puncture tube is provided with a first blood drawing end and a first blood return end, and the first valve port of the three-way valve is communicated with the first blood drawing end; the tube sealing assembly includes a liquid storage part and a tube sealing main body that are communicated, and the tube sealing main body is communicated with the second valve port of the three-way valve; the filtering assembly includes a main hemodialysis tube, a blood pump, and a filter that are all installed on the main hemodialysis tube, and the main hemodialysis tube is provided with a second blood drawing end and a second blood return end; the second blood drawing end is communicated with the tube sealing main body, and the second blood return end can be selectively communicated with the first blood return end or the third valve port of the three-way valve.

[0008] In an optional embodiment, a switching member is provided at at least one of the first valve port, the second valve port, and the third valve port.

[0009] Based on the above solution, by providing a switching member at each valve port, the use state of the corresponding valve port can be controlled by operating the corresponding switching member during the debugging process, and the operation is flexible and reliable.

[0010] In an alternative embodiment, the switching member is provided as a solenoid valve.

[0011] Based on the above solution, by providing a solenoid valve, it is convenient to control, and automatic control can be achieved, improving control accuracy.

[0012] In an alternative embodiment, the sealing tube assembly further includes a branch pipe, one end of the branch pipe communicates with the sealing tube main body, and the other end of the branch pipe communicates with the second blood drawing end.

[0013] Based on the above solution, by providing a branch pipe to connect to the main hemodialysis pipe, the branch pipe and the sealing tube main body are arranged at an angle and have a reasonable distance from each other, and interference is not likely to occur. When using the branch pipe to connect to the main hemodialysis pipe, the sealing tube main body is not likely to form an obstruction, and the operation is convenient and fast.

[0014] In an alternative embodiment, the sealing tube assembly further includes a control valve, and the control valve is installed on the branch pipe for controlling the on-off of the branch pipe and the main hemodialysis pipe.

[0015] Based on the above solution, by adjusting the working state of the control valve, the connection state of the branch pipe and the main hemodialysis pipe can be adjusted, and the use is flexible and reliable.

[0016] In an alternative embodiment, a first valve is further provided on the hemodialysis puncture tube, and the first valve is used for controlling the on-off of the first blood drawing end.

[0017] Based on the above solution, by controlling the on-off of the first blood drawing end with the first valve, the operation is convenient and flexible, and when the first blood drawing end is closed by the first valve, the sealing performance of the first blood drawing end can be improved.

[0018] In an alternative embodiment, a second valve is further provided on the hemodialysis puncture tube, and the second valve is used for controlling the on-off of the first blood return end.

[0019] Based on the above solution, by controlling the on-off of the first blood return end with the second valve, the operation is convenient and flexible. And when the first blood return end is closed by the second valve, the sealing performance of the first blood return end can be improved.

[0020] In an alternative embodiment, the filtration assembly further includes a third valve, and the third valve is installed on the main hemodialysis pipe for controlling the on-off of the second blood drawing end.

[0021] Based on the above solution, by controlling the on-off of the second blood drawing end with the third valve, the operation is convenient and flexible, and when the second blood drawing end is closed by the third valve, the sealing performance of the second blood drawing end can be improved.

[0022] In an alternative embodiment, the filtering assembly further includes a fourth valve, which is installed on the main hemodialysis tube and is used to control the on-off of the second blood return end.

[0023] Based on the above solution, controlling the on-off of the second blood return end through the fourth valve is convenient and flexible in operation. Moreover, when the second blood return end is closed by the fourth valve, the sealing performance of the second blood return end can be improved.

[0024] In a second aspect, the present invention provides a continuous renal replacement therapy system, which includes:

[0025] The CRRT unplanned downtime tube flushing kit according to any one of the foregoing embodiments.

[0026] The beneficial effects of the embodiments of the present invention are:

[0027] To sum up, the CRRT unplanned downtime tube flushing kit provided in this embodiment adds a three-way valve and a tube sealing assembly between the hemodialysis puncture tube and the filtering assembly. During normal operation, the first valve and the second valve port of the three-way valve are used to connect the first blood drawing end of the hemodialysis puncture tube and the tube sealing main body, and the tube sealing main body is connected to the second blood drawing end of the main hemodialysis tube. In this way, the connection between the first blood drawing end and the second blood drawing end is realized. At the same time, the second blood return end of the main hemodialysis tube is normally connected to the first blood return end of the hemodialysis puncture tube. During the operation, the blood pump drives the blood to circulate, and the blood is filtered by the filter and then enters the patient's body. When an unplanned downtime occurs during the treatment process, at this time, the liquid storage part of the tube sealing assembly is used to input the tube sealing liquid into the first blood drawing end and the first blood return end to seal the hemodialysis puncture tube. After sealing the tube, the first blood drawing end and the first blood return end of the hemodialysis puncture tube are closed, the first blood return end and the second blood return end are separated, and the second blood return end is connected to the third valve port of the three-way valve. At the same time, the three-way valve is separated from the first blood drawing end. In this way, the three-way valve, the tube sealing assembly and the filtering assembly are used in cooperation and are all separated from the hemodialysis puncture tube. The hemodialysis puncture tube can be retained on the patient's body, and the blood pump can continue to operate to realize the circulation of the blood in the main hemodialysis tube and filter the blood. In this way, when it is necessary to deliver the blood to the patient's body again, only need to connect the first valve port of the three-way valve to the first blood drawing end, remove the second blood return end from the third valve port and connect it to the first blood return end, and open the corresponding port, the blood can normally circulate through the patient's body, the operation is convenient, there is no need to replace the pipeline, the cost is reduced, and the treatment efficiency is improved. Description of the Drawings

[0028] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant accompanying drawings can also be obtained based on these drawings.

[0029] Figure 1 It is an exploded view of the CRRT unplanned shutdown tube flushing kit according to the embodiment of the present utility model;

[0030] Figure 2 It is a schematic diagram of a state of the CRRT unplanned shutdown tube flushing kit according to the embodiment of the present utility model;

[0031] Figure 3 It is a schematic diagram of another state of the CRRT unplanned shutdown tube flushing kit according to the embodiment of the present utility model.

[0032] Icon:

[0033] 100 - hemodialysis puncture tube; 110 - first blood drawing end; 120 - first blood return end; 200 - three - way valve; 210 - first valve port; 220 - second valve port; 230 - third valve port; 300 - tube sealing assembly; 310 - tube sealing main body; 320 - liquid storage part; 330 - branch pipe; 400 - filtration assembly; 410 - hemodialysis main pipe; 411 - second blood drawing end; 412 - second blood return end; 420 - blood pump; 430 - filter. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0036] It should be noted that: similar reference numerals and letters represent similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0038] In addition, the terms "horizontal", "vertical", etc. do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0039] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] In the prior art, in the case of an unplanned pause during CRRT treatment and subsequent need to resume treatment, it is necessary to replace the corresponding kit, which will increase the treatment cost for patients, increase the workload of medical staff, increase the treatment difficulty, and reduce the treatment efficiency.

[0041] In view of this, the designer provides a CRRT unplanned downtime catheter circulation kit, which can realize the multiple use of the kit, reduce costs, avoid multiple puncture operations, save time and effort, reduce labor intensity, and improve treatment efficiency.

[0042] Please combine with Figures 1 - 3, in this embodiment, the CRRT unplanned downtime blood vessel flushing kit includes a hemodialysis puncture tube 100, a three-way valve 200, a sealing tube assembly 300, and a filtration assembly 400. The hemodialysis puncture tube 100 is provided with a first blood drawing end 110 and a first blood return end 120, and the first valve port 210 of the three-way valve 200 communicates with the first blood drawing end 110; the sealing tube assembly 300 includes a liquid storage member 320 and a sealing tube main body 310 that are connected, and the sealing tube main body 310 communicates with the second valve port 220 of the three-way valve 200; the filtration assembly 400 includes a hemodialysis main tube 410, a blood pump 420, and a filter 430 that are all installed on the hemodialysis main tube 410. The hemodialysis main tube 410 is provided with a second blood drawing end 411 and a second blood return end 412; the second blood drawing end 411 communicates with the sealing tube main body 310, and the second blood return end 412 can selectively communicate with the first blood return end 120 or the third valve port 230 of the three-way valve 200.

[0043] Continuing from the above, the working method of the CRRT unplanned downtime blood vessel flushing kit provided in this embodiment is as follows:

[0044] Please combine with Figure 2 , the operating state of the CRRT unplanned downtime blood vessel flushing kit in cooperation with the patient:

[0045] The first valve port 210 of the three-way valve 200 communicates with the first blood drawing end 110 of the hemodialysis puncture tube 100, the second valve port 220 of the three-way valve 200 communicates with the sealing tube main body 310, the sealing tube main body 310 communicates with the second blood drawing end 411 of the hemodialysis main tube 410, and the second blood return end 412 of the hemodialysis main tube 410 communicates with the first blood return end 120 of the hemodialysis puncture tube 100. In this way, the hemodialysis puncture tube 100, the three-way valve 200, the sealing tube main body 310, the hemodialysis main tube 410, and the blood vessel puncture tube form a circulation loop. That is, the first blood drawing end 110 of the hemodialysis puncture tube 100 and the sealing tube main body 310 are connected by using the first valve and the second valve port 220 of the three-way valve 200, and the sealing tube main body 310 communicates with the second blood drawing end 411 of the hemodialysis main tube 410. In this way, the connection between the first blood drawing end 110 and the second blood drawing end 411 is realized. At the same time, the second blood return end 412 of the hemodialysis main tube 410 is normally connected to the first blood return end 120 of the hemodialysis puncture tube 100. During operation, the blood pump 420 is started, and the blood in the patient's body can enter the hemodialysis main tube 410 from the first blood drawing end 110, return to the hemodialysis puncture tube 100 after passing through the filter 430, and return to the patient's body.

[0046] Please combine with Figure 3 , when an unplanned downtime occurs during the treatment process, the operating state of the CRRT unplanned downtime blood vessel flushing kit:

[0047] The liquid storage member 320 of the catheter sealing assembly 300 is used to input the catheter sealing liquid into the first blood drawing end 110 and the first blood return end 120 to realize the catheter sealing of the hemodialysis puncture tube 100. The first blood drawing end 110 is preferentially catheter-sealed to avoid catheter blockage. After catheter sealing, the first blood drawing end 110 and the first blood return end 120 of the hemodialysis puncture tube 100 are closed, the first blood return end 120 is separated from the second blood return end 412, and the second blood return end 412 is connected to the third valve port 230 of the three-way valve 200. At the same time, the first valve port 210 of the three-way valve 200 is separated from the first blood drawing end 110. In this way, the three-way valve 200, the catheter sealing assembly 300, and the filtration assembly 400 are used in cooperation and are all separated from the hemodialysis puncture tube 100. The hemodialysis puncture tube 100 can be retained on the patient's body, and the blood pump 420 can continue to operate to realize the circulating flow of the blood in the main hemodialysis tube 410 and filter the blood. In this way, when it is necessary to deliver the blood to the patient's body again, only the first valve port 210 of the three-way valve 200 needs to be connected to the first blood drawing end 110, the second blood return end 412 is removed from the third valve port 230 and connected to the first blood return end 120, and the corresponding ports are opened. The blood can normally circulate through the patient's body, the operation is convenient, there is no need to replace the pipeline, the cost is reduced, and the treatment efficiency is improved.

[0048] The following embodiments will illustrate the details of the CRRT unplanned downtime catheter flushing kit provided by the present application by way of example.

[0049] In this embodiment, optionally, a switch member is provided at at least one of the first valve port 210, the second valve port 220, and the third valve port 230. For example, in this embodiment, switch members can be provided at the first valve port 210, the second valve port 220, and the third valve port 230. By providing switch members at each valve port, the use state of the corresponding valve port can be controlled by operating the corresponding switch member during the debugging process, and the operation is flexible and reliable.

[0050] It should be noted that the switch member is set as an electromagnetic valve, which can realize automatic control, is convenient and flexible to operate, saves time and effort, and improves the control accuracy.

[0051] In this embodiment, optionally, the catheter sealing assembly 300 further includes a branch pipe 330. One end of the branch pipe 330 is connected to the catheter sealing main body 310, and the other end of the branch pipe 330 is connected to the second blood drawing end 411. After the branch pipe 330 is connected to the catheter sealing main body 310, the branch pipe 330 and the catheter sealing main body 310 are substantially in a Y shape, that is, the branch pipe 330 is located on the side of the catheter sealing main body 310, and the catheter sealing main body 310 is connected to the second valve port 220 of the three-way valve 200.

[0052] It should be noted that by setting the branch pipe 330 to connect to the main hemodialysis pipe 410, the branch pipe 330 and the sealing pipe body 310 are arranged at an angle and have a reasonable distance from each other, so that interference is not likely to occur. When using the branch pipe 330 to connect to the main hemodialysis pipe 410, the sealing pipe body 310 is not likely to form an obstruction, and the operation is convenient and fast.

[0053] It should be understood that a sealing ring can be provided at the connection between the first valve port 210 and the first blood drawing end 110. Correspondingly, sealing rings can be provided at all other interfaces to improve the sealing performance.

[0054] In this embodiment, optionally, the sealing pipe assembly 300 further includes a control valve, which is installed on the branch pipe 330 and is used to control the on-off of the branch pipe 330 and the main hemodialysis pipe 410. By adjusting the working state of the control valve, the connection state of the branch pipe 330 and the main hemodialysis pipe 410 can be adjusted, and the use is flexible and reliable.

[0055] It should be understood that the control valve can be, but is not limited to, an electromagnetic valve.

[0056] In this embodiment, optionally, the hemodialysis puncture tube 100 is further provided with a first valve and a second valve. The first valve is used to control the on-off of the first blood drawing end 110. The second valve is used to control the on-off of the first blood return end 120.

[0057] It is worth noting that by controlling the on-off of the first blood drawing end 110 with the first valve, the operation is convenient and flexible, and when the first blood drawing end 110 is closed by the first valve, the sealing performance of the first blood drawing end 110 can be improved. By controlling the on-off of the first blood return end 120 with the second valve, the operation is convenient and flexible. And when the first blood return end 120 is closed by the second valve, the sealing performance of the first blood return end 120 can be improved.

[0058] It should be understood that both the first valve and the second valve can be set as electromagnetic valves.

[0059] In this embodiment, optionally, the filtration assembly 400 further includes a third valve and a fourth valve. The third valve is installed on the main hemodialysis pipe 410 and is used to control the on-off of the second blood drawing end 411. The fourth valve is installed on the main hemodialysis pipe 410 and is used to control the on-off of the second blood return end 412.

[0060] It should be understood that by controlling the on-off of the second blood drawing end 411 with the third valve, the operation is convenient and flexible, and when the second blood drawing end 411 is closed by the third valve, the sealing performance of the second blood drawing end 411 can be improved. By controlling the on-off of the second blood return end 412 with the fourth valve, the operation is convenient and flexible. And when the second blood return end 412 is closed by the fourth valve, the sealing performance of the second blood return end 412 can be improved.

[0061] It should be noted that both the third valve and the fourth valve can be set as electromagnetic valves.

[0062] It should be noted that the liquid storage member 320 can store pre-flushing liquid saline, which can be transported by a pump body.

[0063] In addition, when sealing the first blood drawing end 110, the control valve on the branch pipe 330 is closed, and the third valve port 230 of the three-way valve 200 is closed. The pre-flushing liquid saline can flow from the sealing tube main body 310 to the three-way valve 200 and enter the first blood drawing end 110. When sealing the first blood return end 120, the first blood drawing end 110 is closed and the branch pipe 330 is opened. The pre-flushing liquid saline can enter the hemodialysis main pipe 410 from the branch pipe 330, and then enter the first blood return end 120.

[0064] The CRRT unplanned shutdown circulation tube kit provided by this embodiment can realize the independent circulation of blood from the patient after an unplanned shutdown. After resuming normal treatment, it can cooperate the hemodialysis main pipe 410 with the hemodialysis puncture tube 100 again, and can transport the blood into the patient's body to avoid waste of blood. At the same time, it can reduce the workload of clinical medical staff, ensure the safety of patients, avoid wasting a set of CRRT pipelines, and reduce the cost of patients. In addition, the CRRT unplanned shutdown circulation tube kit of this embodiment is an integrated device, which is convenient to operate. By setting multiple solenoid valves, it can be automatically controlled, avoiding repeated disconnection and connection clinically and preventing infection.

[0065] This embodiment also provides a continuous renal replacement therapy system, including a CRRT unplanned shutdown circulation tube kit, which at least has the advantages of low cost and convenient use.

[0066] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A CRRT unplanned shutdown circulation kit, characterized in that: include: A hemodialysis puncture tube (100), a three-way valve (200), a tube sealing assembly (300) and a filter assembly (400); the hemodialysis puncture tube (100) is provided with a first blood outlet end (110) and a first blood return end (120); the first valve port (210) of the three-way valve (200) is connected to the first blood outlet end (110); the tube sealing assembly (300) includes a liquid storage part (320) and a tube sealing body (310) which are connected to each other; the tube sealing body (310) is connected to the second valve port (210) of the three-way valve (200) 220); the filtering component (400) comprises a hemodialysis main pipe (410) and a blood pump (420) and a filter (430) both mounted on the hemodialysis main pipe (410); the hemodialysis main pipe (410) is provided with a second blood inlet end (411) and a second blood return end (412); the second blood inlet end (411) is connected to the sealing tube body (310), and the second blood return end (412) can be selectively connected to the first blood return end (120) or the third valve port (230) of the three-way valve (200).

2. The CRRT unplanned shutdown circulation kit according to claim 1, characterized in that: A switch element is provided at at least one of the first valve port (210), the second valve port (220) and the third valve port (230).

3. The CRRT unplanned shutdown circulation kit according to claim 2, characterized in that: The switch element is configured as a solenoid valve.

4. The CRRT unplanned shutdown circulation kit according to claim 1, characterized in that: The tube sealing assembly (300) further comprises a branch tube (330), one end of which is connected to the tube sealing body (310), and the other end of which is connected to the second blood outlet end (411).

5. The CRRT unplanned shutdown circulation kit according to claim 4, characterized in that: The tube sealing assembly (300) further comprises a control valve, which is installed on the branch tube (330) and is used to control the connection and disconnection between the branch tube (330) and the main hemodialysis tube (410).

6. The CRRT unplanned shutdown circulation kit according to claim 1, characterized in that: The hemodialysis puncture tube (100) is also provided with a first valve, and the first valve is used to control the opening and closing of the first blood drawing end (110).

7. The CRRT unplanned shutdown circulation kit according to claim 1, characterized in that: The hemodialysis puncture tube (100) is also provided with a second valve, and the second valve is used to control the opening and closing of the first blood return end (120).

8. The CRRT unplanned shutdown circulation kit according to claim 1, characterized in that: The filtering component (400) further comprises a third valve, which is installed on the hemodialysis main pipe (410) and is used to control the on-off of the second blood outlet end (411).

9. The CRRT unplanned shutdown circulation kit according to claim 1, characterized in that: The filtering assembly (400) further comprises a fourth valve, which is installed on the hemodialysis main pipe (410) and is used to control the opening and closing of the second blood return end (412).

10. A continuous renal replacement therapy system, characterized in that: The continuous renal replacement therapy system comprises: The CRRT unplanned shutdown circulation kit according to any one of claims 1-9.

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