ECMO pre-charging device

Abstract

The utility model generally relates to the technical field of medical equipment, in particular to an ECMO pre-filling device which comprises a pre-filling support, a pre-filling bag and a peristaltic pump, the pre-filling support is sequentially provided with a first connecting part, a second connecting part and a third connecting part from top to bottom, an infusion bottle is arranged on the first connecting part, the pre-filling bag is arranged on the second connecting part, and the peristaltic pump is arranged on the pre-filling bag. A peristaltic pump is arranged on the third connecting part, the infusion bottle is communicated with the pre-filling bag through an infusion tube, the bottom of the pre-filling bag is connected with a conveying tube, the conveying tube carries out infusion pumping on the ECMO pipeline through the peristaltic pump, and a backflow tube of the ECMO pipeline is communicated with the pre-filling bag. Layered management can be achieved through the pre-filling support, the infusion bottle, the pre-filling bag and the peristaltic pump are sequentially arranged from high to low in the pre-filling liquid flowing direction, and the flowing resistance of the pre-filling liquid and collision mixing between gas and liquid are reduced; meanwhile, the peristaltic pump has a good emptying effect, the ECMO pipeline can be gradually filled with the pre-filling liquid, and gas is prevented from entering the ECMO pipeline again.

Description

Technical Field

[0001] This utility model generally relates to the field of medical device technology, and more specifically, to an ECMO pre-filling device. Background Technology

[0002] Extracorporeal membrane oxygenation (ECMO) is a technology for rescuing patients with severe cardiopulmonary failure. It represents the level of critical care in a country, region, or hospital, and is currently considered to redefine the boundary between life and death. ECMO is an extracorporeal circulation technology that operates outside the cardiac operating room. Its principle involves using a blood pump to draw venous blood from the body, oxygenate it through an oxygenator, and then inject it into the patient's arterial or venous system, providing partial cardiopulmonary replacement and maintaining oxygenated blood supply to the body's organs and tissues. The blood pump's role is to generate the force that drives blood to flow through the tubing; within a reasonable negative pressure range, it has a suction effect, but its effectiveness in removing air is not ideal.

[0003] With technological advancements, ECMO is increasingly used in critical care. However, pre-filling of the tubing is essential before use. Incomplete pre-filling can lead to gas embolism and membrane pulmonary coagulation, threatening the patient's life. Furthermore, incomplete pre-filling increases the time required for subsequent pre-filling, raising patient costs and hindering the timely and effective application of ECMO. Utility Model Content

[0004] This application provides an ECMO pre-filling device to solve the technical problems of ECMO pre-filling.

[0005] This application provides an ECMO pre-filling device, including: a pre-filling support, a pre-filling bag, and a peristaltic pump. The pre-filling support is provided with a first connecting part, a second connecting part, and a third connecting part from top to bottom. An infusion bottle is provided on the first connecting part, the pre-filling bag is provided on the second connecting part, and the peristaltic pump is provided on the third connecting part. The infusion bottle and the pre-filling bag are connected through an infusion tube. A delivery tube is connected to the bottom of the pre-filling bag. The delivery tube pumps infusion into the ECMO tubing via the peristaltic pump. The return tube of the ECMO tubing is connected to the pre-filling bag.

[0006] According to some embodiments of the present invention, the pre-filled bag includes a bag body, an infusion port, a delivery port, and a return port. The delivery port is provided at the bottom of the bag body, and one or more infusion ports for connecting to the infusion tube are provided at the top of the bag body. Two sets of return ports are provided. One end of the return port is provided at the bottom of the bag body for connecting to the return tube, and the other end of the return port extends upward and is higher than the level of the pre-filled liquid in the bag body.

[0007] According to some embodiments of the present invention, the conveying interface is provided at the bottom of one side of the bag body, and the bottom of the bag body is inclined toward the conveying interface.

[0008] According to some embodiments of the present invention, the pre-charge bracket includes an upper bracket rod, a lower bracket rod, a first locking nut, and bracket legs. The upper bracket rod and the lower bracket rod are movably sleeved together. The lower bracket rod is provided with the first locking nut, which can laterally abut against the upper bracket rod to fix the upper bracket rod relative to the lower bracket rod. The bottom of the lower bracket rod is provided with three sets of bracket legs, which are distributed at 120° intervals between each other around the axis of the lower bracket rod.

[0009] According to some embodiments of the present invention, the first connecting part is disposed on the top of the upper support rod, the first connecting part includes three sets of hooks, and the three sets of hooks are arranged at 120° intervals between each other with respect to the axis of the upper support rod, and the infusion bottle is hung on each set of hooks.

[0010] According to some embodiments of the present invention, the second connecting part includes a slip ring, a second locking nut, and a short-handled hook. The slip ring is movably connected to the upper support rod. The second locking nut is disposed on the slip ring and can laterally abut against the upper support rod to fix the slip ring relative to the upper support rod. The short-handled hook is disposed on the slip ring for hanging the pre-filled bag.

[0011] According to some embodiments of the present invention, the third connecting part includes a placement platform and a reinforcing rib. The placement platform is annular and is sleeved on the lower support rod. The reinforcing rib is disposed below the placement platform and connects the placement platform and the lower support rod. An annular stop bar is provided on the edge of the placement platform.

[0012] According to some embodiments of the present invention, the peristaltic pump is disposed on one side of the storage platform, and a counterweight bucket is disposed on the other side of the storage platform to balance the pre-charged bracket.

[0013] According to some embodiments of the present invention, the bottom of the pre-charge bracket is provided with a movable wheel, and a brake assembly is provided on the movable wheel.

[0014] As can be seen from the above technical solution, the advantages and positive effects of this ECMO pre-filling device are as follows: This application uses a dedicated ECMO pre-filling device to pre-fill the ECMO tubing. The pre-filling support allows for layered management, arranging the infusion bottle, pre-filling bag, and peristaltic pump sequentially from high to low according to the flow direction of the pre-filling fluid, reducing the flow resistance of the pre-filling fluid and the collision and mixing between gas and liquid. Simultaneously, the peristaltic pump has a good evacuation effect, gradually filling the ECMO tubing with pre-filling fluid and preventing gas from re-entering. The entire operation is sterile. Compared with traditional methods, this pre-filling is more thorough, saves time, reduces contamination, ensures the effective implementation of ECMO, improves work efficiency, saves time for patient rescue, and reduces costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an ECMO pre-filling device disclosed in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the pre-fill bag structure of an ECMO pre-fill device disclosed in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the pre-charge bracket structure of an ECMO pre-charge device disclosed in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the pre-charging of an ECMO pre-charging device disclosed in an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Pre-filled support; 2. Pre-filled bag; 3. Peristaltic pump; 10. First connecting part; 11. Second connecting part; 12. Third connecting part; 4. Infusion bottle; 40. Infusion tubing; 20. Delivery tubing; 21. Return tubing; 13. Upper support rod; 14. Lower support rod; 15. First locking nut; 16. Support leg; 110. Slip ring; 111. Second locking nut; 112. Short-handled hook; 120. Placement platform; 121. Reinforcing rib; 122. Counterweight bucket; 17. Casters; 22. Bag body; 23. Infusion interface; 24. Delivery interface; 25. Return interface; 5. Blood pump; 6. Oxygenator; 70. Blood inflow tubing; 71. Blood outflow tubing; 8. Oxygen supply tubing; 9. Connecting tubing. Detailed Implementation

[0022] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0023] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0024] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0026] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0027] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0028] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0029] like Figure 1 As shown in the figure, an ECMO pre-filling device includes: a pre-filling support 1, a pre-filling bag 2, and a peristaltic pump 3. The pre-filling support 1 is provided with a first connecting part 10, a second connecting part 11, and a third connecting part 12 from top to bottom. An infusion bottle 4 is provided on the first connecting part 10, the pre-filling bag 2 is provided on the second connecting part 11, and the peristaltic pump 3 is provided on the third connecting part 12. The infusion bottle 4 and the pre-filling bag 2 are connected through an infusion tube 40. A delivery tube 20 is connected to the bottom of the pre-filling bag 2. The delivery tube 20 pumps infusion into the ECMO tubing via the peristaltic pump 3. The return tube 21 of the ECMO tubing is connected to the pre-filling bag 2. This application utilizes a dedicated ECMO pre-filling device to pre-fill ECMO tubing. The pre-filling support 1 allows for layered management, arranging the infusion bottle 4, pre-filling bag 2, and peristaltic pump 3 sequentially from high to low according to the flow direction of the pre-filling fluid. This reduces flow resistance of the pre-filling fluid and collisions and mixing between gas and liquid. Simultaneously, the peristaltic pump 3 has a good evacuation effect, gradually filling the ECMO tubing with pre-filling fluid while preventing gas re-entry. The entire operation is aseptic. Compared to traditional methods, this pre-filling is more thorough, saves time, reduces contamination, ensures effective ECMO implementation, improves work efficiency, buys time for patient rescue, and saves costs.

[0030] like Figure 2As shown, in some embodiments of this utility model, the pre-filled bag 2 includes a bag body 22, an infusion port 23, a delivery port 24, and a return port 25. The delivery port 24 is provided at the bottom of one side of the bag body 22, and the bottom of the bag body 22 is inclined towards the delivery port 24. One or more infusion ports 23 for connecting to the infusion tube 40 are provided at the top of the bag body 22. Two sets of return ports 25 are provided. One end of the return port 25 is located at the bottom of the bag body 22 for connecting to the return tube 21, and the other end of the return port 25 extends upward and is higher than the level of the pre-filled liquid in the bag body 22. The bottom of the bag body 22 is inclined towards the delivery port 24 to ensure that the pre-filled liquid completely covers the delivery port 24, avoiding incomplete pre-filling due to insufficient liquid level and gas entry at the end. The top of the bag 22 is provided with one or more infusion ports 23 for connecting to the infusion tube 40. These ports can be used to connect multiple infusion bottles 4, accelerating the replenishment of pre-filled liquid into the pre-filled bag 2 and maintaining a high liquid level. The return pipe 21 is positioned above the liquid level. During pre-filling, the return pipe 21 carries in some gas, which is discharged above the liquid level, reducing mixing with the pre-filled liquid and thus lowering the gas concentration within the pre-filled liquid.

[0031] like Figure 3 As shown, in some embodiments of this utility model, the pre-charge bracket 1 includes an upper bracket rod 13, a lower bracket rod 14, a first locking nut 15, and bracket legs 16. The upper bracket rod 13 and the lower bracket rod 14 are movably sleeved together. The first locking nut 15 is provided on the lower bracket rod 14, and the first locking nut 15 can laterally abut against the upper bracket rod 13, fixing the upper bracket rod 13 relative to the lower bracket rod 14. Three sets of bracket legs 16 are provided at the bottom of the lower bracket rod 14, and the three sets of bracket legs 16 are arranged at 120° intervals between each other around the axis of the lower bracket rod 14. The lower bracket rod 14 can extend and retract relative to the upper bracket rod 13 to adjust the height of the pre-charge bracket 1. Then, by tightening the first locking nut 15, the first locking nut 15 abuts against the upper bracket rod 13 laterally, fixing the upper bracket rod 13 relative to the lower bracket rod 14, making adjustment convenient. The bottom of the lower support rod 14 is provided with three sets of support legs 16, which enable the pre-charged support 1 to be kept upright and avoid tilting.

[0032] like Figure 3As shown, in some embodiments of this utility model, the first connecting part 10 is disposed on the top of the upper support rod 13. The first connecting part 10 includes three sets of hooks, and the three sets of hooks are arranged at 120° intervals between each other around the axis of the upper support rod 13. Each set of hooks is used to hang the infusion bottle 4. The three sets of hooks are evenly distributed, which can better balance the force on the pre-filling support 1. At the same time, the three sets of hooks can hang three sets of infusion bottles 4 simultaneously, which can speed up the filling speed of the infusion bottle 4 into the pre-filling bag 2 and improve the pre-filling efficiency.

[0033] like Figure 3 As shown, in some embodiments of this utility model, the second connecting part 11 includes a slip ring 110, a second locking nut 111, and a short-handled hook 112. The slip ring 110 is movably sleeved with the upper support rod 13. The second locking nut 111 is disposed on the slip ring 110 and can laterally abut against the upper support rod 13, thereby fixing the slip ring 110 relative to the upper support rod 13. The short-handled hook 112 is disposed on the slip ring 110 for hanging the pre-filled bag 2. The second connecting part 11 can be adjusted in height by the slip ring 110 moving up and down relative to the upper support rod 13, and the second locking nut 111 laterally abuts against the upper support rod 13, thereby fixing the slip ring 110 relative to the upper support rod 13. This facilitates the adjustment of the height of the second connecting part 11 during use, ensuring that the pre-filled bag 2 reaches the optimal position, reducing bends and entanglements between pipes, and facilitating efficient liquid flow.

[0034] like Figure 1 and Figure 3As shown, in some embodiments of this utility model, the third connecting part 12 includes a placement platform 120 and a reinforcing rib 121. The placement platform 120 is annular and is sleeved on the lower support rod 14. The reinforcing rib 121 is located below the placement platform 120 and connects the placement platform 120 and the lower support rod 14. Annular baffles are provided on the edge of the placement platform 120. The peristaltic pump 3 is located on one side of the placement platform 120, and a counterweight 122 is provided on the other side of the placement platform 120 to balance the pre-charged support 1. The annular shape of the placement platform 120 helps to ensure the balanced force on the pre-charged support 1. That is, when the force on one side of the pre-charged support 1 is too large, the pre-charged support 1 can be balanced by adjusting the position of the counterweight 122 and the peristaltic pump 3 on the placement platform 120. The reinforcing rib 121 can strengthen the support of the placement platform 120 and improve the structural strength of the placement platform 120. The annular stop bar restricts the movement of objects, thus preventing falls. Specifically, the counterweight 122 can be a water bucket. Precise control of force balance is achieved by adjusting the water volume in the bucket. The bottom of the bucket has a water outlet connected to a valve and a water outlet pipe. During use, the water volume in the bucket is continuously changed by adjusting the valve, allowing for dynamic balance during pre-filling. As the pre-filling fluid in the pre-filled bag 2 enters the ECMO tubing, the weight of the pre-filled bag 2 decreases, and the water in the bucket also decreases as it flows out of the outlet pipe, achieving dynamic balance on both sides of the pre-filling support 1.

[0035] like Figure 3 As shown, in some embodiments of this utility model, the pre-charge bracket 1 is provided with a movable wheel 17 at its bottom, and a brake assembly is provided on the movable wheel 17. The movable wheel 17 facilitates the movement of the pre-charge bracket 1, and when it is necessary to fix the pre-charge bracket 1, simply pressing down the brake assembly can brake the movable wheel 17.

[0036] like Figure 4As shown, in some embodiments of this utility model, the ECMO tubing includes a blood pump 5, an oxygenator 6, a blood inflow tube 70, a blood outflow tube 71, an oxygen supply tube 8, and a connecting tube 9. The outlet of the blood pump 5 is connected to the inlet of the oxygenator 6 via the connecting tube 9. The blood inflow tube 70 is connected to the outlet of the oxygenator 6. The blood outflow tube 71 is connected to the inlet of the blood pump 5. The blood inflow tube 70 and the blood outflow tube 71 are connected. The oxygen supply tube 8 is connected to the oxygen supply port of the oxygenator 6. Blood enters from the inlet of the blood pump 5 through the blood outflow tube 71. Under the pumping action of the blood pump 5, it then enters the oxygenator 6 through the connecting tube 9 from the outlet of the blood pump 5. The oxygenator 6 combines the blood with the oxygen passing through the oxygen supply tube 8, oxygenating the deoxygenated blood into oxygenated blood. The blood is then transported back to the patient's body through the blood inflow tube 70, completing extracorporeal circulation. The delivery tube 20 is connected to the blood outflow tube 71 near the end of the blood pump 5. Two sets of return tubes 21 are provided, connected to the blood outflow tube 71 and the oxygen supply tube 8 respectively, and the return tube 21 is connected to the blood outflow tube 71 near the end of the blood inflow tube 70. The ECMO tubing and the ECMO pre-filling device are detachably connected; that is, the delivery tube 20 is detachably connected to the blood outflow tube 71, and the return tube 21 is detachably connected to both the blood outflow tube 71 and the oxygen supply tube 8. Before pre-filling, the above connections must be established before starting the pre-filling operation.

[0037] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0038] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. An ECMO pre-filling device, characterized in that, include: The pre-filled support (1), the pre-filled bag (2), and the peristaltic pump (3) are arranged from top to bottom as a first connecting part (10), a second connecting part (11), and a third connecting part (12). An infusion bottle (4) is arranged on the first connecting part (10), the pre-filled bag (2) is arranged on the second connecting part (11), and the peristaltic pump (3) is arranged on the third connecting part (12). The infusion bottle (4) and the pre-filled bag (2) are connected through an infusion tube (40). The bottom of the pre-filled bag (2) is connected to a delivery tube (20). The delivery tube (20) pumps the ECMO tubing through the peristaltic pump (3). The return tube (21) of the ECMO tubing is connected to the pre-filled bag (2).

2. The ECMO pre-charge device according to claim 1, characterized in that: The pre-filled bag (2) includes a bag body (22), an infusion port (23), a delivery port (24), and a return port (25). The delivery port (24) is provided at the bottom of the bag body (22), and one or more infusion ports (23) for connecting the infusion tube (40) are provided at the top of the bag body (22). There are two sets of return ports (25). One end of the return port (25) is provided at the bottom of the bag body (22) for connecting the return tube (21), and the other end of the return port (25) extends upward and is higher than the pre-filled liquid level in the bag body (22).

3. The ECMO pre-charge device according to claim 2, characterized in that: The conveying interface (24) is provided at the bottom of one side of the bag body (22), and the bottom of the bag body (22) is inclined towards the conveying interface (24).

4. The ECMO pre-charge device according to claim 1, characterized in that: The pre-charge bracket (1) includes an upper bracket rod (13), a lower bracket rod (14), a first locking nut (15), and bracket legs (16). The upper bracket rod (13) and the lower bracket rod (14) are movably sleeved together. The first locking nut (15) is provided on the lower bracket rod (14). The first locking nut (15) can abut against the upper bracket rod (13) laterally, so that the upper bracket rod (13) is fixed relative to the lower bracket rod (14). The bottom of the lower bracket rod (14) is provided with three sets of bracket legs (16). The three sets of bracket legs (16) are arranged at 120° intervals between each other with respect to the axis of the lower bracket rod (14).

5. The ECMO pre-charge device according to claim 4, characterized in that: The first connecting part (10) is disposed on the top of the upper support rod (13). The first connecting part (10) includes three sets of hooks, and the three sets of hooks are arranged at 120° intervals between each other with respect to the axis of the upper support rod (13). Each set of hooks is equipped with the infusion bottle (4).

6. The ECMO pre-charge device according to claim 4, characterized in that: The second connecting part (11) includes a slip ring (110), a second locking nut (111), and a short hook (112). The slip ring (110) is movably connected to the upper support rod (13). The second locking nut (111) is disposed on the slip ring (110). The second locking nut (111) can laterally abut against the upper support rod (13) to fix the slip ring (110) relative to the upper support rod (13). The short hook (112) is disposed on the slip ring (110) for hanging the pre-filled bag (2).

7. The ECMO pre-charge device according to claim 4, characterized in that: The third connecting part (12) includes a storage platform (120) and a reinforcing rib (121). The storage platform (120) is circular and is sleeved on the lower support rod (14). The reinforcing rib (121) is located below the storage platform (120) and connects the storage platform (120) and the lower support rod (14). The edge of the storage platform (120) is provided with an annular stop bar.

8. The ECMO pre-charge device according to claim 7, characterized in that: The peristaltic pump (3) is located on one side of the storage platform (120), and a counterweight bucket (122) is located on the other side of the storage platform (120) to balance the pre-charge bracket (1).

9. The ECMO pre-filling device according to any one of claims 1 to 8, characterized in that: The pre-charge bracket (1) is provided with a movable wheel (17) at its bottom, and a brake assembly is provided on the movable wheel (17).

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