ECMO rapid pre-charge system and usage method suitable for out-of-hospital emergency rescue

Abstract

This invention relates to an ECMO rapid pre-filling system and its usage method suitable for out-of-hospital emergency rescue. The rapid pre-filling system, in sequence according to the pre-filling fluid flow direction, includes a pre-filling bag, a roller pump, a centrifugal pump, and an oxygenator. The pre-filling bag has an outlet and a return outlet. The outlet of the pre-filling bag is connected to the roller pump via a first pipeline. The roller pump is connected to the liquid inlet of the centrifugal pump via a second pipeline. The liquid outlet of the centrifugal pump is connected to the liquid inlet of the oxygenator via a third pipeline. The liquid outlet of the oxygenator is connected to the return outlet of the pre-filling bag via a fourth pipeline. This invention, by adding a roller pump as a power source to the pre-filling fluid circuit, can quickly inject pre-filling fluid into the circuit to be pre-filled, resulting in high efficiency and short time.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an ECMO rapid pre-filling system and its usage method suitable for out-of-hospital emergency rescue. Background Technology

[0002] Extracorporeal membrane oxygenation (ECMO) is primarily used to provide continuous extracorporeal respiration and circulation for patients with severe cardiopulmonary failure, sustaining their lives. It is commonly used in emergency rescue situations, enabling rapid and timely initiation of life support at the scene of acute cardiovascular or respiratory illnesses. This helps prevent the condition from worsening and leading to multiple organ failure, significantly improving patient survival rates. An ECMO system includes tubing, an oxygenator, a blood pump, and a monitoring system. It draws venous blood from the body, uses a blood pump to circulate the blood, oxygenates it through the oxygenator, and then returns it to the body, thus maintaining the patient's vital signs.

[0003] Before connecting a patient to an ECMO system, the ECMO tubing needs to be pre-filled with saline solution and the air purged to prevent air embolism. However, current ECMO systems have long circuits and involve complex internal components such as centrifugal pumps and oxygenators. Relying on traditional gravity-based purging requires repeated adjustments by the operator, resulting in low efficiency and long processing time. Furthermore, because this method lacks additional power assistance for the pre-filling fluid flow, relying solely on the pre-filling bag being suspended at a high height to allow the fluid to flow into the consumables under gravity, the filling speed is slow and requires ample operating space. Given the urgency of the condition, such as the fact that 4-6 minutes of cerebral hypoxia can often lead to death, and ECMO consumables all require pre-filling and purging to function, this process is crucial.

[0004] Therefore, if the pre-filling time can be compressed as much as possible, it may be possible to effectively improve the survival rate of patients after treatment.

[0005] Furthermore, because the pre-filled bag is located before the centrifugal pump in the tubing structure, when the extracorporeal cardiopulmonary support system is running after pre-filling, the negative pressure at the front end of the centrifugal pump increases. If the patient's cardiac preload is low, it is difficult to maintain an effective circulation flow. It is necessary to establish other intravenous access to resuscitate the patient, which adds extra operation and increases the risk of air intake in the circulation loop, leading to paralysis of the cardiopulmonary support system. This is especially difficult to operate in specific environments and small, dimly lit spaces. Summary of the Invention

[0006] Based on this, it is necessary to address the aforementioned technical problems in the existing technology by providing an ECMO rapid pre-filling system and its usage method suitable for off-site emergency rescue. By adding a roller pump as a power source to the pre-filling fluid circuit, the pre-filling fluid can be quickly injected into the pipeline circuit to be pre-filled, which is highly efficient and takes less time.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0008] An ECMO rapid pre-filling system suitable for out-of-hospital emergency rescue includes, in sequence according to the pre-filling fluid flow direction, a pre-filling bag, a roller pump, a centrifugal pump, and an oxygenator. The pre-filling bag is provided with an outlet and a return outlet. The outlet of the pre-filling bag is connected to the roller pump through a first pipeline. The roller pump is connected to the liquid inlet of the centrifugal pump through a second pipeline. The liquid outlet of the centrifugal pump is connected to the liquid inlet of the oxygenator through a third pipeline. The liquid outlet of the oxygenator is connected to the return outlet of the pre-filling bag through a fourth pipeline.

[0009] This invention adds a roller pump as a power source to the pre-filling liquid circuit, which can quickly inject the pre-filling liquid into the pipeline circuit to be pre-filled, with high efficiency and short time.

[0010] In one feasible implementation, the second and fourth pipelines are connected by a fifth pipeline, on which a first pipe clamp is installed to connect or disconnect the flow of liquid within the fifth pipeline. This invention allows switching between a pre-filled pipeline and a normal operating pipeline.

[0011] In one feasible implementation, a second pipe clamp is installed on the second pipeline to connect or disconnect the flow of liquid within the second pipeline. The second pipe clamp is located between the roller pump and the connection point between the second and fifth pipelines. A third pipe clamp is installed on the fourth pipeline to connect or disconnect the flow of liquid within the fourth pipeline. The third pipe clamp is located between the pre-filled bag and the connection point between the fourth and fifth pipelines. In the event of a centrifugal pump failure during operation, the invention can be urgently replaced by the roller pump to ensure system operation and maintain the patient's vital signs.

[0012] In one feasible implementation, the fourth pipeline is connected to the first pipeline via a sixth pipeline, and a fourth pipe clamp is installed on the sixth pipeline to connect or disconnect the flow of liquid in the sixth pipeline.

[0013] Preferably, the pre-filled bag has an outlet pipe connected to its outlet, which is detachably connected to the first pipe; the pre-filled bag has a return pipe connected to its return outlet, which is detachably connected to the fourth pipe; and the sixth pipe is located between the connection point of the outlet pipe and the first pipe and the connection point of the return pipe and the fourth pipe.

[0014] Preferably, the rolling pump is mounted on the centrifugal pump. This arrangement allows for system integration, facilitates equipment miniaturization, and makes the equipment easy to carry and use.

[0015] In one feasible implementation, the rapid pre-charge system has a first working state, in which a first pipe wrench cuts off the flow of liquid in the fifth pipe, a fourth pipe wrench cuts off the flow of liquid in the sixth pipe, a second pipe wrench connects the flow of liquid in the second pipe, a third pipe wrench connects the flow of liquid in the fourth pipe, and a roller pump serves as the power source for the entire system, enabling the liquid in the pre-charge bag to pre-charge and vent the entire system.

[0016] In one feasible implementation, the rapid pre-charge system has a second working state, in which the first pipe clamp connects the flow of liquid in the fifth pipe, the fourth pipe clamp connects the flow of liquid in the sixth pipe, the second pipe clamp cuts off the flow of liquid in the second pipe, the third pipe clamp cuts off the flow of liquid in the fourth pipe, the fourth pipe is connected to the human vein and artery, and the centrifugal pump serves as the power source for the entire system.

[0017] In one feasible implementation, the rapid pre-filling system has a third working state: the first pipe clamp cuts off the flow of liquid in the fifth pipe, the second pipe clamp connects the flow of liquid in the second pipe, the third pipe clamp connects the flow of liquid in the fourth pipe, the fourth pipe clamp connects the flow of liquid in the sixth pipe, the pre-filling bag, the outlet pipe, and the return pipe are removed, the fourth pipe is connected to the human vein and artery, and the roller pump serves as the power source for the entire system.

[0018] In one feasible implementation, the rapid pre-filling system has a fourth operating state: a third clamp cuts off the flow of liquid in the fourth tubing; a first clamp connects the flow of liquid in the fifth tubing; a second clamp connects the flow of liquid in the second tubing; and a fourth clamp connects or cuts off the flow of liquid in the sixth tubing. The fourth tubing is connected to a human vein and artery. A centrifugal pump serves as the power source for the entire system, and a roller pump replenishes the liquid in the pre-filled bag to the human body. When a patient needs fluid replacement, this invention allows for precise control of the volume and rate of fluid replenishment by rotating the roller pump.

[0019] To solve the above technical problems, another technical solution adopted by the present invention is:

[0020] A method of using the ECMO rapid pre-charge system as described above includes the following steps:

[0021] Pre-charge and vent the entire system: the first pipe wrench cuts off the flow of liquid in the fifth pipe, the fourth pipe wrench cuts off the flow of liquid in the sixth pipe, the second pipe wrench connects the flow of liquid in the second pipe, and the third pipe wrench connects the flow of liquid in the fourth pipe. The roller pump serves as the power source for the entire system, and the liquid in the pre-charge bag pre-charges and vents the entire system.

[0022] One feasible implementation also includes the following steps:

[0023] After the venting is completed, the fourth pipe is disconnected and connected to the veins and arteries of the human body respectively. The first pipe clamp connects the flow of liquid in the fifth pipe, the fourth pipe clamp connects the flow of liquid in the sixth pipe, the second pipe clamp cuts off the flow of liquid in the second pipe, and the third pipe clamp cuts off the flow of liquid in the fourth pipe. The centrifugal pump serves as the power source for the entire system.

[0024] Preferably, when the centrifugal pump fails, the first pipe wrench cuts off the flow of liquid in the fifth pipe, the second pipe wrench connects the flow of liquid in the second pipe, the third pipe wrench connects the flow of liquid in the fourth pipe, the fourth pipe wrench connects the flow of liquid in the sixth pipe, the pre-filled bag, the outlet pipe, and the return pipe are removed, and the roller pump serves as the power source for the entire system.

[0025] Preferably, when the human body needs fluid replenishment at the same time, the third pipe wrench cuts off the flow of liquid in the fourth pipe, the first pipe wrench connects the flow of liquid in the fifth pipe, the second pipe wrench connects the flow of liquid in the second pipe, and the fourth pipe wrench connects or cuts off the flow of liquid in the sixth pipe. The centrifugal pump serves as the power source for the entire system, and the roller pump replenishes the liquid in the pre-filled bag to the human body.

[0026] Due to the adoption of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0027] 1. This invention adds a roller pump as a power source to the pre-filling liquid circuit, which can quickly inject the pre-filling liquid into the pipeline circuit to be pre-filled, with high efficiency and short time.

[0028] 2. The present invention uses a roller pump as a power source for pre-charging instead of another centrifugal pump because the centrifugal pump cannot be used as a power source when the air is not completely expelled, while the roller pump can generate kinetic energy without being affected by the air, and can directly perform pre-charging, further simplifying the operation and improving the pre-charging speed.

[0029] 3. Because the present invention does not require the pre-filled liquid bag to be hung high for operation, the operator can maintain a prone or non-standing position to operate in high-risk specific areas or environments with limited operating space (such as small spaces such as inside a carriage), thus improving the safety and convenience of operation.

[0030] 4. After pre-filling, the pre-filled bag can be retained due to the pressure-closing capability of the roller pump, and the pre-filled fluid can be connected to the infusion circuit via the roller pump. When the patient needs fluid replacement, the volume and rate of fluid replacement can be precisely controlled by rotating the roller pump;

[0031] 5. If the centrifugal pump malfunctions during operation, the invention can be urgently replaced by a rolling pump to ensure system operation and maintain the patient's vital signs. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the rapid pre-charge system of the present invention;

[0033] Figure 2 This is a pre-charging working route diagram of the fast pre-charging system of Embodiment 1 of the present invention;

[0034] Figure 3 This is a schematic diagram of the working circuit of the centrifugal pump in Embodiment 2 of the present invention;

[0035] Figure 4 This is a working circuit diagram of the roller press pump in Embodiment 3 of the present invention;

[0036] Figure 5 This is a flowchart illustrating the fluid replenishment process in Embodiment 4 of the present invention.

[0037] Figure 6 This is a schematic diagram of the rapid pre-charge system of the present invention.

[0038] Among them, 1. Pre-filled bag; 11. Liquid outlet; 12. Liquid return outlet; 13. Liquid outlet pipe; 14. Liquid return pipe; 2. Roller pump; 3. Centrifugal pump; 4. Oxygenator; 5. First pipeline; 6. Second pipeline; 7. Third pipeline; 8. Fourth pipeline; 9. Fifth pipeline; 10. Sixth pipeline; 11. First pipe wrench; 12. Second pipe wrench; 13. Third pipe wrench; 14. Fourth pipe wrench. Detailed Implementation

[0039] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," "up," "down," and similar expressions used in this document are for illustrative purposes only.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. In this application, " / " means "or".

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] Currently, because the pre-filling fluid flow lacks power and relies solely on gravity to allow the fluid to flow into the consumables from a high suspension height, the filling speed is very slow. Furthermore, since the pre-filling bag is located before the centrifugal pump in the tubing structure, the high negative pressure during operation after pre-filling makes it difficult to control the fluid flow rate. Therefore, the pre-filling bag is usually removed, and an additional intravenous access is established to resuscitate the patient, adding extra steps and making the circuit more complex. However, given the urgency of the condition—for example, 4-6 minutes of cerebral hypoxia often leads to death—and the fact that ECMO consumables require pre-filling and degassing before operation, minimizing the pre-filling time could potentially significantly improve the patient's survival rate after treatment.

[0044] Based on this, the present invention provides an ECMO rapid pre-filling system and its usage method suitable for out-of-hospital emergency rescue. By adding a roller pump as a power source to the pre-filling fluid circuit, the pre-filling fluid can be quickly injected into the pipeline circuit to be pre-filled, which is highly efficient and takes a short time.

[0045] The present invention will be described in detail below with reference to specific embodiments.

[0046] like Figure 1-6 As shown, this embodiment is applicable to ECMO rapid pre-filling system for out-of-hospital emergency rescue, and includes a pre-filling bag 1, a roller pump 2, a centrifugal pump 3, and an oxygenator 4 in sequence according to the flow direction of the pre-filling fluid.

[0047] In this embodiment, the pre-filled bag 1 is provided with a liquid outlet 11 and a liquid return port 12. The liquid outlet 11 of the pre-filled bag 1 is connected to the roller pump 2 through the first pipeline 5. That is, one end of the first pipeline 5 is connected to the liquid outlet 11 of the pre-filled bag 1, and the other end is connected to the liquid inlet of the roller pump 2.

[0048] The roller pump 2 is connected to the liquid inlet of the centrifugal pump 3 through the second pipeline 6. That is, one end of the second pipeline 6 is connected to the liquid outlet of the roller pump 2, and the other end is connected to the liquid inlet of the centrifugal pump 3.

[0049] The liquid outlet of centrifugal pump 3 is connected to the liquid inlet of oxygenator 4 through the third pipe 7. That is, one end of the third pipe 7 is connected to the liquid outlet of centrifugal pump 3, and the other end is connected to the liquid inlet of oxygenator 4.

[0050] The liquid outlet of the oxygenator 4 is connected to the return port 12 of the pre-filled bag 1 through the fourth pipe 8. That is, one end of the fourth pipe 8 is connected to the liquid outlet of the oxygenator 4, and the other end is connected to the return port 12 of the pre-filled bag 1.

[0051] In this embodiment, a roller pump 2 is added to the pre-filling liquid circuit as a power source, which can quickly inject the pre-filling liquid into the pipeline circuit to be pre-filled, with high efficiency and short time.

[0052] In this embodiment, the second pipe 6 and the fourth pipe 8 are connected by a fifth pipe 9, that is, one end of the fifth pipe 9 is connected to the second pipe 6, and the other end is connected to the fourth pipe 8.

[0053] In this embodiment, a first pipe clamp 11 is provided on the fifth pipe 9 for connecting or cutting off the flow of liquid in the fifth pipe 9. Therefore, this embodiment can realize the switching between the pre-filling pipe and the normal filling working pipe.

[0054] In this embodiment, a second pipe clamp 12 is installed on the second pipeline 6 to connect or disconnect the flow of liquid within the second pipeline 6. The second pipe clamp 12 is located between the liquid outlet of the roller pump and the connection point between the second pipeline 6 and the fifth pipeline 9. A third pipe clamp 13 is installed on the fourth pipeline 8 to connect or disconnect the flow of liquid within the fourth pipeline 8. The third pipe clamp 13 is located between the return port of the pre-filled bag and the connection point between the fourth pipeline 8 and the fifth pipeline 9. In this embodiment, if the centrifugal pump 3 malfunctions during operation, it can be replaced by the roller pump 2 in an emergency to ensure system operation and maintain the patient's vital signs.

[0055] In this embodiment, the fourth pipeline 8 and the first pipeline 5 are connected by a sixth pipeline 10. A fourth pipe clamp 14 is provided on the sixth pipeline 10 to connect or disconnect the flow of liquid in the sixth pipeline 10.

[0056] In this embodiment, an outlet pipe 13 is also connected to the outlet 11. One end of the outlet pipe 13 is connected to the outlet 11, and the other end is detachably connected to the first pipe 5. A return pipe 14 is also connected to the return outlet 12. One end of the return pipe 14 is connected to the return outlet 12, and the other end is detachably connected to the fourth pipe 8. The detachable connection method between the pipes here is a common technical means and will not be described in detail here.

[0057] In this embodiment, the sixth pipeline 10 is located between the connection point of the outlet pipeline 13 and the first pipeline 5 and the connection point of the return pipeline 14 and the fourth pipeline 8. Therefore, the fourth pipe clamp 14 located on the sixth pipeline 10 is also located between the connection point of the outlet pipeline 13 and the first pipeline 5 and the connection point of the return pipeline 14 and the fourth pipeline 8.

[0058] In this embodiment, the roller pump 2 is mounted on the centrifugal pump 3. This arrangement allows for system integration, facilitates equipment miniaturization, and makes the equipment easy to carry and use.

[0059] Example 1

[0060] like Figure 2 As shown, in this embodiment, the rapid pre-filling system has a first working state. At this state, the first pipe clamp 11 cuts off the flow of liquid in the fifth pipe 9, the fourth pipe clamp 14 cuts off the flow of liquid in the sixth pipe 10, the second pipe clamp 12 connects the flow of liquid in the second pipe 6, and the third pipe clamp 13 connects the flow of liquid in the fourth pipe 8. The roller pump serves as the power source for the entire system, causing the liquid in the pre-filling bag 1 to pre-fill and vent the entire system. The flow direction of the pre-filling liquid is as follows: from the outlet 11 of the pre-filling bag 1, through the outlet pipe 13 and the first pipe 5, it flows into the roller pump 2; from the roller pump 2, it flows out through the second pipe 6 into the centrifugal pump 3; from the centrifugal pump 3, it flows out through the third pipe 7 into the oxygenator 4; and from the oxygenator 4, it flows out through the fourth pipe 8, the return pipe 14, and the return outlet 12 into the pre-filling bag 1. When the pipes are connected, the pipe clamp... Figure 2 None of them are displayed.

[0061] This embodiment adds a roller pump as a power source to the pre-filling fluid circuit, which can quickly inject the pre-filling fluid into the pipeline circuit to be pre-filled, resulting in high efficiency and short time. At the same time, the roller pump is used as the power source for pre-filling instead of another centrifugal pump because the centrifugal pump cannot be used as a power source when the air is not completely expelled, while the roller pump can generate kinetic energy without being affected by air, and can directly perform pre-filling, further simplifying the operation and improving the pre-filling speed. There is no need to hang the pre-filling fluid bag high for operation, so in high-risk specific areas or environments with limited operating space (such as small spaces such as inside a carriage), the operator can maintain a prone or non-standing position to operate, improving the safety and convenience of operation.

[0062] Example 2

[0063] like Figure 3 As shown, in this embodiment, the rapid pre-charging system has a second working state. In this state, the first pipe clamp 11 connects the flow of liquid in the fifth pipe 9, the fourth pipe clamp 14 connects the flow of liquid in the sixth pipe 10, the second pipe clamp 12 cuts off the flow of liquid in the second pipe 6, and the third pipe clamp 13 cuts off the flow of liquid in the fourth pipe 8. The fourth pipe 8 is connected to a human vein and artery, and the centrifugal pump 3 serves as the power source for the entire system. When the fourth pipe 8 is connected to a human vein and artery, the disconnection point on the fourth pipe 8 is located between the liquid outlet of the oxygenator 4 and the connection point between the fourth pipe 8 and the fifth pipe 9. Specifically, when the pipes are connected, the pipe clamp... Figure 3 None of them are displayed.

[0064] Example 3

[0065] like Figure 4 As shown, in this embodiment, the rapid pre-filling system has a third working state. At this state, the first pipe clamp 11 cuts off the flow of liquid in the fifth pipe 9, the second pipe clamp 12 connects the flow of liquid in the second pipe 6, the third pipe clamp 13 connects the flow of liquid in the fourth pipe 8, and the fourth pipe clamp 14 connects the flow of liquid in the sixth pipe 10. The pre-filling bag 1, the outlet pipe 13, and the return pipe 14 are removed, and the fourth pipe is connected to the human vein and artery. The roller pump 2 serves as the power source for the entire system. When the fourth pipe 8 is connected to the human vein and artery, the disconnection point on the fourth pipe 8 is located between the liquid outlet of the oxygenator 4 and the connection point between the fourth pipe 8 and the fifth pipe 9. Specifically, when the pipes are connected, the pipe clamp... Figure 4 None of them are displayed.

[0066] Here, the pre-filled bag 1, the liquid outlet pipe 13, and the liquid return pipe 14 can also remain in place. However, it is recommended to remove them during use to reduce pipe tangling.

[0067] In this embodiment, if the centrifugal pump fails during operation, it can be replaced by a rolling pump in an emergency to ensure system operation and maintain the patient's vital signs.

[0068] Example 4

[0069] like Figure 5As shown, in this embodiment, the rapid pre-filling system has a fourth operating state. In this state, the third pipe clamp 13 cuts off the flow of liquid in the fourth pipe 8, the first pipe clamp 11 connects the flow of liquid in the fifth pipe 9, the second pipe clamp 12 connects the flow of liquid in the second pipe 6, and the fourth pipe clamp 14 connects or cuts off the flow of liquid in the sixth pipe 10. The fourth pipe 8 is then connected to the human veins and arteries. The centrifugal pump 3 serves as the power source for the entire system, and the roller pump 2 replenishes the liquid in the pre-filling bag 1 to the human body. When the fourth pipe 8 is connected to the human veins and arteries, the disconnection point on the fourth pipe 8 is located between the liquid outlet of the oxygenator 4 and the connection point between the fourth pipe 8 and the fifth pipe 9. Specifically, when the pipes are connected, the pipe clamp... Figure 5 None of them are displayed.

[0070] In this embodiment, after pre-filling, the pre-filled bag can be retained due to the pressure-closing capability of the roller pump, and the liquid can be connected to the infusion circuit via the roller pump. When the patient needs fluid resuscitation, the volume and rate of resuscitation can be precisely controlled by rotating the roller pump.

[0071] The method of using the ECMO rapid pre-charge system described in this application includes the following steps:

[0072] The entire system is pre-charged and vented: the first pipe clamp 11 cuts off the flow of liquid in the fifth pipe 9, the fourth pipe clamp 14 cuts off the flow of liquid in the sixth pipe 10, the second pipe clamp 12 connects the flow of liquid in the second pipe 6, and the third pipe clamp 13 connects the flow of liquid in the fourth pipe 8. The roller pump 2 serves as the power source for the entire system, causing the liquid in the pre-charge bag 1 to pre-charge and vent the entire system. The flow direction of the pre-charge liquid is as follows: from the outlet 11 of the pre-charge bag 1, through the outlet pipe 13 and the first pipe 5, it flows into the roller pump 2; from the roller pump 2, it flows out through the second pipe 6 into the centrifugal pump 3; from the centrifugal pump 3, it flows out through the third pipe 7 into the oxygenator 4; from the oxygenator 4, it flows out through the fourth pipe 8, the return pipe 14, and the return port 12 into the pre-charge bag 1.

[0073] In this embodiment, the following steps are also included:

[0074] After the venting is completed, the fourth pipe 8 is disconnected and connected to the veins and arteries of the human body respectively. The first pipe clamp 11 connects the flow of liquid in the fifth pipe 9, the fourth pipe clamp 14 connects the flow of liquid in the sixth pipe 10, the second pipe clamp 12 cuts off the flow of liquid in the second pipe 6, and the third pipe clamp 13 cuts off the flow of liquid in the fourth pipe 8. The centrifugal pump 3 serves as the power source for the entire system.

[0075] When centrifugal pump 3 fails, the first pipe wrench 11 cuts off the flow of liquid in the fifth pipe 9, the second pipe wrench 12 connects the flow of liquid in the second pipe 6, the third pipe wrench 14 connects the flow of liquid in the fourth pipe 8, and the fourth pipe wrench 14 connects the flow of liquid in the sixth pipe 10. The pre-filling bag 1, the liquid outlet pipe 13, and the liquid return pipe 14 are removed, and the roller pump 2 serves as the power source for the entire system.

[0076] When the human body needs fluid replenishment, the third pipe clamp 13 cuts off the flow of liquid in the fourth pipe 8, the first pipe clamp 11 connects the flow of liquid in the fifth pipe 9, the second pipe clamp 12 connects the flow of liquid in the second pipe 6, and the fourth pipe clamp 14 connects or cuts off the flow of liquid in the sixth pipe 10. The centrifugal pump 3 serves as the power source for the entire system, and the roller pump 2 replenishes the liquid in the pre-filled bag 1 to the human body.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An ECMO rapid pre-charge system suitable for out-of-hospital emergency rescue, characterized in that, The components, arranged sequentially according to the flow direction of the pre-filled liquid, include a pre-filled bag, a roller pump, a centrifugal pump, and an oxygenator. The pre-filled bag has an outlet and a return outlet. The outlet of the pre-filled bag is connected to the roller pump through a first pipeline. The roller pump is connected to the liquid inlet of the centrifugal pump through a second pipeline. The liquid outlet of the centrifugal pump is connected to the liquid inlet of the oxygenator through a third pipeline. The liquid outlet of the oxygenator is connected to the return outlet of the pre-filled bag through a fourth pipeline. The second pipeline is connected to the fourth pipeline via a fifth pipeline, and a first pipe clamp is provided on the fifth pipeline for connecting or cutting off the flow of liquid in the fifth pipeline; A second pipe clamp is provided on the second pipeline for connecting or cutting off the flow of liquid in the second pipeline. The second pipe clamp is located between the roller pump and the connection point between the second pipeline and the fifth pipeline. A third pipe clamp is provided on the fourth pipeline for connecting or cutting off the flow of liquid in the fourth pipeline. The third pipe clamp is located between the pre-filled bag and the connection point between the fourth pipeline and the fifth pipeline. The fourth pipeline is connected to the first pipeline via a sixth pipeline. A fourth pipe clamp is installed on the sixth pipeline to connect or disconnect the flow of liquid in the sixth pipeline. The pre-filled bag has a liquid outlet connected to a liquid outlet pipe, which is detachably connected to the first pipe. The pre-filled bag has a liquid return pipe connected to a liquid return port, which is detachably connected to the fourth pipe. The sixth pipe is located between the connection point between the liquid outlet pipe and the first pipe and the connection point between the liquid return pipe and the fourth pipe. The rolling pump is mounted on the centrifugal pump; The rapid pre-filling system has four operating states. In the first operating state, the roller pump serves as the power source for the entire system, allowing the liquid in the pre-filling bag to pre-fill and degas the entire system. In the second operating state, the fourth pipeline is connected to the human vein and artery, and the centrifugal pump serves as the power source for the entire system. In the third operating state, the fourth pipeline is connected to the human vein and artery, and the roller pump serves as the power source for the entire system. In the fourth operating state, the fourth pipeline is connected to the human vein and artery, the centrifugal pump serves as the power source for the entire system, and the roller pump replenishes the liquid in the pre-filling bag to the human body.

2. The ECMO rapid pre-charge system for out-of-hospital emergency rescue according to claim 1, characterized in that, The rapid pre-charge system has a first working state, in which the first pipe clamp cuts off the flow of liquid in the fifth pipe, the fourth pipe clamp cuts off the flow of liquid in the sixth pipe, the second pipe clamp connects the flow of liquid in the second pipe, and the third pipe clamp connects the flow of liquid in the fourth pipe.

3. The ECMO rapid pre-charge system for out-of-hospital emergency rescue according to claim 1, characterized in that, The rapid pre-charge system has a second working state, in which the first pipe clamp connects to the flow of liquid in the fifth pipe, the fourth pipe clamp connects to the flow of liquid in the sixth pipe, the second pipe clamp cuts off the flow of liquid in the second pipe, and the third pipe clamp cuts off the flow of liquid in the fourth pipe.

4. The ECMO rapid pre-charge system for out-of-hospital emergency rescue according to claim 1, characterized in that, The rapid pre-charge system has a third working state, in which the first pipe wrench cuts off the flow of liquid in the fifth pipe, the second pipe wrench connects the flow of liquid in the second pipe, the third pipe wrench connects the flow of liquid in the fourth pipe, the fourth pipe wrench connects the flow of liquid in the sixth pipe, and the pre-charge bag, the liquid outlet pipe, and the liquid return pipe are removed.

5. The ECMO rapid pre-charge system for out-of-hospital emergency rescue according to claim 1, characterized in that, The rapid pre-charge system has a fourth operating state, in which the third pipe clamp cuts off the flow of liquid in the fourth pipe, the first pipe clamp connects the flow of liquid in the fifth pipe, the second pipe clamp connects the flow of liquid in the second pipe, and the fourth pipe clamp connects or cuts off the flow of liquid in the sixth pipe.

6. A method of using the ECMO rapid pre-charge system as described in any one of claims 1 to 5, characterized in that, Includes the following steps: Pre-charge and vent the entire system: the first pipe wrench cuts off the flow of liquid in the fifth pipe, the fourth pipe wrench cuts off the flow of liquid in the sixth pipe, the second pipe wrench connects the flow of liquid in the second pipe, and the third pipe wrench connects the flow of liquid in the fourth pipe. The roller pump serves as the power source for the entire system, and the liquid in the pre-charge bag pre-charges and vents the entire system.

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