A dual pump extracorporeal membrane oxygenation device

Abstract

The utility model discloses a kind of double-pump extracorporeal membrane lung oxygenation equipment, belong to medical technical field. Mainly including first blood pump, second blood pump and oxygenator, the oxygenator is gas exchange device with fiber membrane, for removing carbon dioxide in blood and supplementing oxygen, the inlet end of the first blood pump is used to connect to the venous end of patient, the outlet end of the first blood pump is connected to the inlet end of oxygenator, the outlet end of the oxygenator is connected with Y type pipe, one end of the Y type pipe is directly back to the venous end and provides breathing support, the other end of the Y type pipe is connected to the inlet end of second blood pump, the outlet end of the second blood pump is connected to the arterial end of patient. The inlet end and outlet end of the oxygenator are respectively provided with pre-membrane pressure gauge and post-membrane pressure gauge. The double-pump extracorporeal membrane lung oxygenation equipment of the application achieves the effect of reducing cardiac afterload.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, and more specifically, to a dual-pump extracorporeal membrane oxygenation (ECMO) device. Background Technology

[0002] Extracorporeal membrane oxygenation (ECMO), commonly known as "artificial lung," is an extracorporeal life support technology used to support the cardiopulmonary function of critically ill patients. Clinically, there are two main modes: VV-ECMO and VA-ECMO. VV-ECMO is primarily used for patients with severe respiratory failure. Blood is drawn from a vein, oxygenated by an oxygenator, and then returned to another vein to replace or assist the lungs' gas exchange function. VA-ECMO is mainly for patients with cardiogenic shock or cardiac arrest, providing support to the circulatory system. Blood is drawn from the venous end, oxygenated by an oxygenator, and then returned to the arterial end. However, in clinical practice, many patients not only have severe respiratory failure but also cardiac failure. In such cases, a hybrid ECMO mode, such as V-AV, is often required. This mode requires two return lines for arterial and venous return. Currently, clinical ECMO devices often only have one blood pump. When using hybrid ECMO, the resistance at the arterial return end is higher, and a single blood pump cannot regulate the flow rate at both the arterial and venous ends, making it impossible to individualize adjustments for complex clinical situations and ensuring adequate organ perfusion. VA-ECMO often uses femoral artery cannulation for blood return, which can hinder effective perfusion of the patient's brain and upper body. In such cases, a dual-arterial cannula can be added for blood return, increasing perfusion to the upper body through the common carotid artery return end. The common carotid artery pump allows for precise control of blood flow to the upper body, reducing the risk of cerebral hyperperfusion and improving North-South syndrome. Therefore, this patent suggests establishing a dual-pump design on the ECMO machine to precisely control the blood return flow for individualized treatment. Furthermore, VA-ECMO increases cardiac afterload through arterial blood return, which can increase cardiac workload in patients with severe heart failure, hindering cardiac recovery. The V-AV mode can shunt arterial blood return, reducing cardiac afterload and enabling individualized flow management strategies.

[0003] Therefore, it is necessary to provide a dual-pump extracorporeal membrane oxygenation (ECMO) device to solve the above problems. Utility Model Content

[0004] Based on the aforementioned problems in the prior art, the purpose of this application is to provide a dual-pump extracorporeal membrane oxygenation device to reduce cardiac afterload.

[0005] The technical solution adopted by this application to solve its technical problem is: a dual-pump extracorporeal membrane oxygenation device, including a first blood pump, a second blood pump, and an oxygenator. The oxygenator is a gas exchange device with a fiber membrane, used to remove carbon dioxide from the blood and supplement oxygen. The inlet end of the first blood pump is connected to the patient's venous end, and the outlet end of the first blood pump is connected to the inlet end of the oxygenator. The outlet end of the oxygenator is connected to a Y-shaped tube. One end of the Y-shaped tube is directly reinfused to the venous end to provide respiratory support, and the other end of the Y-shaped tube is connected to the inlet end of the second blood pump. The outlet end of the second blood pump is connected to the patient's arterial end.

[0006] Furthermore, it also includes a control console, to which both the first and second blood pumps are signal connected. The control console is used to provide real-time monitoring and control of the flow rate and rotation speed of the first and second blood pumps based on the patient's hemodynamic status and cardiopulmonary needs.

[0007] Furthermore, the oxygenator is equipped with a pre-membrane pressure gauge and a post-membrane pressure gauge at its inlet and outlet ends, respectively.

[0008] Furthermore, the oxygenator is also connected to a heat exchanger and an air detector.

[0009] The beneficial effects of this utility model are:

[0010] By including a first blood pump, a second blood pump, and an oxygenator, a complete extracorporeal blood circulation loop is formed. This allows for more precise regulation of the flow rate in each loop, managing blood perfusion in the upper and lower body to reduce "north-south syndrome" and ensuring that oxygenated blood effectively perfuses vital organs. For patients with severe heart failure, blood return reduces cardiac afterload and workload through arteriovenous shunts, which is beneficial for cardiac function recovery. Attached Figure Description

[0011] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is an overall schematic diagram of a dual-pump extracorporeal membrane oxygenation device according to this application;

[0013] In the diagram: 1. First blood pump; 2. Second blood pump; 3. Oxygenator; 4. Y-tube; 5. Pre-membrane pressure gauge; 6. Post-membrane pressure gauge; 7. Heat exchanger; 8. Air detector. Detailed Implementation

[0014] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0016] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0017] like Figure 1 As shown, this application provides a dual-pump extracorporeal membrane oxygenation device, including a first blood pump 1, a second blood pump 2, an oxygenator 3, and a control console (not shown). The first blood pump 1 and the second blood pump 2 are both signal-connected to the control console. The control console is used to provide real-time monitoring and control of the flow rate and rotation speed of the first blood pump 1 and the second blood pump 2 according to the patient's hemodynamic status and cardiopulmonary needs.

[0018] In this embodiment, both the first blood pump 1 and the second blood pump 2 are centrifugal pumps. The oxygenator 3 is a gas exchange device with a fiber membrane, used to remove carbon dioxide from the blood and replenish oxygen.

[0019] The inlet end of the first blood pump 1 is connected to the patient's femoral vein, and the outlet end of the first blood pump 1 is connected to the inlet end of the oxygenator 3.

[0020] The outlet end of the oxygenator 3 is connected to a Y-tube 4. One end of the Y-tube 4 is connected to the patient's femoral artery to provide respiratory support, and the other end of the Y-tube 4 is connected to the inlet end of the second blood pump 2. The outlet end of the second blood pump 2 is connected to the patient's internal jugular vein.

[0021] A complete extracorporeal blood circulation circuit is formed by including a first blood pump 1, a second blood pump 2, and an oxygenator 3.

[0022] This dual-pump extracorporeal membrane oxygenation (ECMO) device allows for more precise flow regulation of each circuit, managing blood perfusion in the upper and lower body to reduce "north-south syndrome" and ensuring effective oxygenated blood perfusion of vital organs. For patients with severe heart failure, blood return through arteriovenous shunts reduces cardiac afterload, decreases cardiac workload, and promotes cardiac function recovery.

[0023] The oxygenator 3 is equipped with a pre-membrane pressure gauge 5 and a post-membrane pressure gauge 6 at its inlet and outlet ends, respectively. The oxygenator 3 is also connected to a heat exchanger 7 and an air detector 8. The heat exchanger 7 regulates the temperature of the circulating blood to maintain the patient's core body temperature within a safe range. The air detector 8 detects air bubbles in the blood circuit to prevent air embolism.

[0024] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A dual-pump extracorporeal membrane oxygenation (ECMO) device, characterized in that: The device includes a first blood pump (1), a second blood pump (2), and an oxygenator (3). The oxygenator (3) is a gas exchange device with a fiber membrane, used to remove carbon dioxide from the blood and replenish oxygen. The inlet end of the first blood pump (1) is connected to the patient's venous end, and the outlet end of the first blood pump (1) is connected to the inlet end of the oxygenator (3). The outlet end of the oxygenator (3) is connected to a Y-tube (4). One end of the Y-tube (4) is directly returned to the venous end to provide respiratory support, and the other end of the Y-tube (4) is connected to the inlet end of the second blood pump (2). The outlet end of the second blood pump (2) is connected to the patient's arterial end.

2. The dual-pump extracorporeal membrane oxygenation device according to claim 1, characterized in that: It also includes a console, to which both the first blood pump (1) and the second blood pump (2) are signal connected. The console is used to provide real-time monitoring and control of the flow rate and rotation speed of the first blood pump (1) and the second blood pump (2) according to the patient's hemodynamic status and cardiopulmonary needs.

3. The dual-pump extracorporeal membrane oxygenation device according to claim 1, characterized in that: The oxygenator (3) is equipped with a pre-membrane pressure gauge (5) and a post-membrane pressure gauge (6) at its inlet and outlet ends, respectively.

4. The dual-pump extracorporeal membrane oxygenation device according to claim 1, characterized in that: The oxygenator (3) is also connected to a heat exchanger (7) and an air detector (8).

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