An ECMO adult oxygenator

Abstract

This utility model discloses an ECMO adult oxygenator, belonging to the field of medical device technology. It includes an outer cylinder, an inner cylinder, a first middle cylinder, a second middle cylinder, an upper cover, and a lower cover. The inner cylinder is disposed inside the outer cylinder. The first and second middle cylinders are spaced apart from the inner cylinder to the outer cylinder. The upper cover is installed on the top of the outer cylinder, and the lower cover is installed on the bottom of the outer cylinder. A blood inlet is provided on one side of the upper cover, and a bleeding outlet is provided on one side of the outer cylinder. An air inlet and a water outlet are respectively provided on the side of the upper cover away from the blood inlet. A heat exchange membrane fiber is disposed between the inner cylinder and the first middle cylinder. Oxygenation membrane fibers are disposed between the second middle cylinder and both the first and outer cylinders. The second middle cylinder divides the oxygenation membrane fibers into two layers, allowing for a longer blood flow length within the oxygenation membrane fibers, thereby improving oxygenation efficiency. By using two layers of oxygenation membrane fibers, the individual width of each oxygenation membrane fiber can be smaller, thus reducing the difficulty of the weaving process.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, specifically relating to an ECMO adult oxygenator. Background Technology

[0002] ECMO, or Extracorporeal Membrane Oxygenation, is a treatment method that provides mechanically assisted breathing and circulatory support. It is primarily used to provide continuous extracorporeal respiration and circulation for patients with severe cardiopulmonary failure, thus sustaining their lives. Through the circulatory system, the patient's blood is guided to a large machine. The machine uses filtration and oxidation technologies to bring the blood to the levels of oxygen and nutrients required by the body, and then the processed blood is returned to the patient. This replaces or assists the respiratory and circulatory systems in life-threatening situations such as injury, disease, or cardiac / pulmonary insufficiency, thus sustaining life. ECMO is widely used in the treatment of severe respiratory failure, acute heart failure, and pediatric cardiac surgery, and is an extremely important life support technology.

[0003] Currently, existing oxygenators typically consist of a two-layer structure: a heat exchange membrane fiber and an oxygenation membrane fiber. The heat exchange membrane fiber is usually placed on the inner side, while the oxygenation membrane fiber is placed on the outer side. When the oxygenator is working, blood passes through the gaps between the oxygenation membrane fibers, and the width of the oxygenation membrane fiber is equivalent to the length of blood flow. Therefore, the width of the oxygenation membrane fiber is crucial to the oxygenation efficiency. Existing technologies usually use a single-layer oxygenation membrane fiber. As the width of the oxygenation membrane fiber increases, the weaving difficulty gradually increases. Therefore, the oxygenation efficiency of existing oxygenators with a single-layer oxygenation membrane fiber structure needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide an ECMO oxygenator for adults to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ECMO adult oxygenator, comprising an outer cylinder, an inner cylinder, a first middle cylinder, a second middle cylinder, an upper cover, and a lower cover. The inner cylinder is disposed inside the outer cylinder. The first and second middle cylinders are disposed between the inner and outer cylinders from the inside out. The upper cover is installed on the top of the outer cylinder, and the lower cover is installed on the bottom of the outer cylinder. A blood inlet is provided on one side of the upper cover, and a bleeding outlet is provided on one side of the outer cylinder. An air inlet and a water outlet are respectively provided on the side of the upper cover away from the blood inlet. An air outlet is provided at the bottom of the lower cover near the bleeding outlet. A water inlet is provided on the side of the lower cover away from the bleeding outlet. A venous drainage port is provided at the top of the upper cover. An arterial drainage port is provided on the side of the outer cylinder away from the bleeding outlet. A heat exchange membrane fiber is disposed between the inner cylinder and the first middle cylinder. An oxygenation membrane fiber is disposed between the second middle cylinder and both the first and outer cylinders. The oxygenation membrane fiber has two layers.

[0006] In a preferred embodiment, the bottom of the upper cover and the top of the lower cover are integrally provided with two concentrically arranged retaining rings.

[0007] In a preferred embodiment, both ends of the inner cylinder and the middle cylinder are provided with annular grooves that are adapted to the retaining ring.

[0008] In a preferred embodiment, a sampling port is provided at the bottom of the bleeding opening.

[0009] In a preferred embodiment, the top cover is provided with a first potting layer between the outer cylinder and the inner cylinder.

[0010] In a preferred embodiment, the lower cover is provided with a second glue layer between the outer cylinder and the inner cylinder.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This ECMO adult oxygenator divides the oxygenation membrane fibers into two layers through the middle cylinder, allowing blood to flow a longer distance within the oxygenation membrane fibers, thereby improving oxygenation efficiency.

[0013] This ECMO adult oxygenator uses two layers of oxygenation membrane fibers, which allows for a smaller individual width of the oxygenation membrane fibers, thus reducing the difficulty of the weaving process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0016] Figure 3 This is a rear cross-sectional view of the present invention.

[0017] In the diagram: 1. Outer cylinder; 2. Inner cylinder; 3. Middle cylinder one; 4. Middle cylinder two; 5. Top cover; 6. Bottom cover; 7. Blood inlet; 8. Bleeding outlet; 9. Air inlet; 10. Water outlet; 11. Air outlet; 12. Water inlet; 13. Venous drainage outlet; 14. Arterial drainage outlet; 15. Heat exchange membrane fiber; 16. Oxygenation membrane fiber; 17. Clamping ring; 18. Annular groove; 19. Sampling port; 20. First glue layer; 21. Second glue layer. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0020] Please see Figure 1-3 This utility model provides an ECMO adult oxygenator, including an outer cylinder 1, an inner cylinder 2, a first middle cylinder 3, a second middle cylinder 4, an upper cover 5, and a lower cover 6. The inner cylinder 2 is disposed inside the outer cylinder 1. The first middle cylinder 3 and the second middle cylinder 4 are disposed between the inner cylinder 2 and the outer cylinder 1 from the inside to the outside. The upper cover 5 is installed on the top of the outer cylinder 1, and the lower cover 6 is installed on the bottom of the outer cylinder 1. The bottom of the upper cover 5 and the top of the lower cover 6 are integrally provided with two concentrically arranged retaining rings 17. Both ends of the inner cylinder 2 and the first middle cylinder 3 are provided with annular grooves 18 that are adapted to the retaining rings 17. Through the cooperation of the retaining rings 17 and the annular grooves 18, the inner cylinder 2 and the first middle cylinder 3 can be locked and positioned with the upper cover 5 and the lower cover 6.

[0021] The upper cover 5 is provided with a first glue layer 20 between the outer cylinder 1 and the inner cylinder 2, and the lower cover 6 is provided with a second glue layer 21 between the outer cylinder 1 and the inner cylinder 2. The first glue layer 20 and the second glue layer 21 can seal the upper cover 5 and the lower cover 6 with the outer cylinder 1 and the inner cylinder 2.

[0022] Reference Figures 1-3 The upper cover 5 has a blood inlet 7 on one side, and the outer cylinder 1 has a bleeding outlet 8 on one side. The upper cover 5 has an air inlet 9 and a water outlet 10 on the side away from the blood inlet 7. The lower cover 6 has an air outlet 11 at its bottom near the bleeding outlet 8, and a water inlet 12 on the side away from the bleeding outlet 8. The upper cover 5 has a venous drainage outlet 13 at its top, and the outer cylinder 1 has an arterial drainage outlet 14 on the side away from the bleeding outlet 8. A heat exchange membrane filament 15 is installed between the inner cylinder 2 and the first middle cylinder 3. An oxygenation membrane filament 16 is installed between the second middle cylinder 4 and the first middle cylinder 3, and between the second middle cylinder 4 and the outer cylinder 1. The oxygenation membrane filament 16 has two layers, which are divided into two layers by the middle cylinder 2 4. Hot water enters the heat exchange membrane filament 15 between the inner cylinder 2 and the middle cylinder 3 from the inlet 12 and is finally discharged from the outlet 10. Blood enters the inner cylinder 2 from the blood inlet 7, and is first heated by the heat exchange membrane filament 15 between the inner cylinder 2 and the middle cylinder 3. Then it passes through the two layers of oxygenation membrane filament 16 on both sides of the middle cylinder 2 4 and is discharged from the outlet 8. Because the middle cylinder 2 4 divides the oxygenation membrane filament 16 into two layers, the blood can flow a longer distance in the oxygenation membrane filament 16, thereby improving the oxygenation efficiency.

[0023] The bottom of the bleeding port 8 is provided with a sampling port 19, through which the blood discharged from the bleeding port 8 can be sampled.

[0024] The working principle and usage process of this utility model are as follows: First, hot water enters the heat exchange membrane filament 15 between the inner cylinder 2 and the middle cylinder 3 through the inlet 12, and finally exits through the outlet 10. Blood enters the inner cylinder 2 through the blood inlet 7, and is first heated by the heat exchange membrane filament 15 between the inner cylinder 2 and the middle cylinder 3. Then, it passes through the two layers of oxygenation membrane filament 16 on both sides of the middle cylinder 4 and exits through the blood outlet 8. Since the middle cylinder 4 divides the oxygenation membrane filament 16 into two layers, the blood can flow a longer length in the oxygenation membrane filament 16, thereby improving the oxygenation efficiency. In addition, the individual width of the two layers of oxygenation membrane filament 16 can be smaller, thereby reducing the difficulty of the weaving process.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ECMO (Extracorporeal Membrane Oxygenator) for adults, comprising an outer cylinder (1), an inner cylinder (2), a first middle cylinder (3), a second middle cylinder (4), an upper cover (5), and a lower cover (6), characterized in that: The inner cylinder (2) is located inside the outer cylinder (1). The middle cylinder one (3) and the middle cylinder two (4) are spaced apart from the inside to the outside between the inner cylinder (2) and the outer cylinder (1). The upper cover (5) is installed on the top of the outer cylinder (1), and the lower cover (6) is installed on the bottom of the outer cylinder (1). A blood inlet (7) is provided on one side of the upper cover (5), and a bleeding outlet (8) is provided on one side of the outer cylinder (1). An air inlet (9) and a water outlet (10) are respectively provided on the side of the upper cover (5) away from the blood inlet (7). The lower cover (6) is close to the outlet. An air outlet (11) is provided at the bottom of one side of the bleeding port (8). A water inlet (12) is provided on the side of the lower cover (6) away from the bleeding port (8). A venous drainage port (13) is provided at the top of the upper cover (5). An arterial drainage port (14) is provided on the side of the outer cylinder (1) away from the bleeding port (8). A heat exchange membrane filament (15) is provided between the inner cylinder (2) and the first middle cylinder (3). An oxygenation membrane filament (16) is provided between the second middle cylinder (4) and the first middle cylinder (3) and the outer cylinder (1). The oxygenation membrane filament (16) has two layers.

2. The ECMO adult oxygenator according to claim 1, characterized in that: The bottom of the upper cover (5) and the top of the lower cover (6) are both integrally provided with two concentrically arranged retaining rings (17).

3. An ECMO adult oxygenator according to claim 2, characterized in that: Both ends of the inner cylinder (2) and the middle cylinder (3) are provided with annular grooves (18) that are adapted to the retaining ring (17).

4. An ECMO adult oxygenator according to claim 1, characterized in that: A sampling port (19) is provided at the bottom of the bleeding port (8).

5. An ECMO adult oxygenator according to claim 1, characterized in that: The top cover (5) is provided with a first potting layer (20) between the outer cylinder (1) and the inner cylinder (2).

6. An ECMO adult oxygenator according to claim 1, characterized in that: The lower cover (6) is provided with a second glue layer (21) between the outer cylinder (1) and the inner cylinder (2).

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