An oxygenator

Abstract

The present invention relates to an oxygenator, comprising: a housing, a blood inlet provided at the top of the housing, a bleeding outlet provided at the bottom, a water inlet and a water outlet provided at the top of the housing, an air inlet provided at the top of the housing, and an air outlet provided at the bottom of the housing; an oxygenation temperature-variable assembly vertically disposed within the housing, the oxygenation temperature-variable assembly comprising, from the inside out, a core shaft, a temperature-variable membrane, a baffle, and an oxygenation membrane, the temperature-variable membrane communicating with the water inlet and the water outlet, the oxygenation membrane communicating with the air inlet and the air outlet, the blood inlet end of the core shaft communicating with the blood inlet, and the bleeding end corresponding to the top of the temperature-variable membrane; blood flows from the blood inlet through the core shaft to the temperature-variable membrane, diffuses in all directions with the core shaft as the center, and obliquely passes through the temperature-variable membrane, the baffle, and the oxygenation membrane from top to bottom before flowing out of the bleeding outlet; the blood inlet and the bleeding outlet are located on the same vertical line. The oxygenator of the present invention allows blood to evenly pass through the oxygenation membrane for gas exchange, resulting in a uniform flow field and high gas exchange utilization efficiency of the oxygenation membrane.

Description

Technical Field

[0001] The present invention relates to the technical field of extracorporeal oxygenation, in particular to an oxygenator. Background Art

[0002] Extracorporeal membrane oxygenation (ECMO) is a system in which blood is drawn out of the body, oxygenated through an artificial heart-lung bypass made of special materials, and then injected into the patient's arterial or venous system, playing a partial role as a replacement for the heart and lungs, maintaining oxygenation and blood supply to the body's organs and tissues. The oxygenator is a key component in the ECMO system. The oxygenator maintains the temperature of the blood outside the body and performs the blood oxygenation function. There are three main circulation pathways in the oxygenator: the blood path, in which blood enters the oxygenator through a specific channel and is heated by the oxygenator's variable temperature membrane area to maintain a constant blood temperature; the gas path, in which oxygen penetrates into the blood through the oxygenation membrane filaments in the oxygenation area, while carbon dioxide in the venous blood penetrates the oxygenation membrane filaments and is released from the blood; and the water path, in which a liquid with a constant temperature provides heat energy to the blood through the variable temperature membrane filaments, maintaining the blood temperature in the extracorporeal circulation pipeline.

[0003] Currently, most oxygenators have their blood inlet and bleeding ports at a 90° angle, which can easily lead to uneven blood flow distribution. To avoid this, a few oxygenators have the blood inlet and bleeding ports positioned horizontally at either end of the oxygenator's bottom. However, this design results in uneven blood distribution across the top and bottom of the oxygenator. Summary of the Invention

[0004] Based on this, it is necessary to provide an oxygenator to address the above technical problems existing in the prior art, so that blood can evenly pass through the oxygenation membrane for gas exchange, the flow field is uniform, and the gas exchange utilization efficiency of the oxygenation membrane is high.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An oxygenator, comprising:

[0007] The shell has a blood inlet on the top and a bleeding outlet on the bottom, a water inlet and a water outlet on the top, an air inlet on the upper part and an air outlet on the bottom;

[0008] The oxygenation temperature-variable component is vertically arranged in the housing. The oxygenation temperature-variable component includes, from the inside to the outside, a core shaft, a temperature-variable membrane, a partition, and an oxygenation membrane. The temperature-variable membrane is connected to the water inlet and the water outlet, and the oxygenation membrane is connected to the air inlet and the air outlet. The blood inlet end of the core shaft is connected to the blood inlet, and the bleeding end corresponds to the upper part of the temperature-variable membrane.

[0009] The blood enters the blood inlet through the core shaft and reaches the temperature-variable membrane, then spreads out from the core shaft to the surrounding areas, and then passes through the temperature-variable membrane, the partition, and the oxygenation membrane from top to bottom, and then flows out from the bleeding port.

[0010] The blood inlet and the bleeding outlet are located on the same vertical line.

[0011] Preferably, the oxygenator is a cylindrical structure, and the blood inlet and the blood outlet are located at two ends of the axis of the oxygenator.

[0012] Preferably, the oxygenator further comprises a variable temperature blocking layer and an oxygenation blocking layer arranged in the shell, the variable temperature blocking layer is located on the upper and lower sides of the variable temperature membrane, and the oxygenation blocking layer is located on the upper and lower sides of the oxygenation membrane.

[0013] Preferably, both the temperature-variable membrane and the oxygenation membrane are cylindrical structures, and the oxygenation membrane is sleeved outside the temperature-variable membrane, and the axial height of the temperature-variable membrane is smaller than the axial height of the oxygenation membrane.

[0014] Preferably, the top surface of the temperature-variable membrane is flush with the top surface of the oxygenation membrane, and the axial height of the temperature-variable membrane is 1 / 2-2 / 3 of the axial height of the oxygenation membrane.

[0015] Preferably, the core shaft is sleeved in the temperature-variable membrane, and the structure of the core shaft is cylindrical. A first blood flow space is provided inside the core shaft, and a guide hole is provided on the shaft wall corresponding to the first blood flow space. The position of the guide hole corresponds to the upper part of the temperature-variable membrane. Blood flows in through the blood inlet end of the core shaft and flows out from the guide hole.

[0016] Preferably, a first occupying space separated from the first blood flow space is further provided inside the core shaft, and the first occupying space is away from the blood inlet end relative to the first blood flow space.

[0017] Preferably, the first occupying space and the first blood flow space are separated by a first isolation component provided on the inner wall of the core shaft, and the first isolation component is a protrusion protruding toward the blood inlet end, and the protrusion is an arc-shaped protrusion.

[0018] Preferably, the upper end of the core shaft passes through the temperature-variable sealing layer located on the upper side of the temperature-variable membrane, and the top surface of the core shaft is flush with the top surface of the temperature-variable sealing layer located on the upper side of the temperature-variable membrane, the lower end of the core shaft passes through the temperature-variable sealing layer located on the lower side of the temperature-variable membrane, and the bottom surface of the core shaft is flush with the bottom surface of the temperature-variable sealing layer located on the lower side of the temperature-variable membrane, the top of the guide hole is flush with the top surface of the temperature-variable membrane, the bottom end of the guide hole is correspondingly arranged in the middle of the temperature-variable membrane, and the first isolation component is arranged at the inner wall of the core shaft corresponding to the bottom end of the guide hole.

[0019] Preferably, the blood inlet end of the core shaft is connected to the blood inlet port through a blood inlet blood path. The blood inlet blood path extends from the blood inlet port, passes through the outer shell and is connected to the blood inlet end of the core shaft. The blood inlet blood path is provided with a first expansion portion above the outer shell. The diameter of the pipeline corresponding to the first expansion portion gradually widens as it moves away from the blood inlet port.

[0020] Preferably, a second expansion portion is provided on the inner wall of the bleeding end of the blood inlet line, and the diameter of the inner wall corresponding to the second expansion portion gradually widens as it moves away from the blood inlet.

[0021] Preferably, the end surface of the second expansion portion is parallel to the top end of the guide hole.

[0022] Preferably, the partition is arranged between the temperature-variable membrane and the oxygenation membrane, and the structure of the partition is cylindrical. The upper part of the partition is provided with an upper guide hole, and the lower part is provided with a lower guide hole. The upper guide hole connects the temperature-variable membrane and the oxygenation membrane, and the lower guide hole connects the oxygenation membrane and the bleeding port.

[0023] Preferably, the top of the upper guide hole is flush with the top surface of the oxygenation membrane, the bottom of the upper guide hole is flush with the bottom surface of the temperature-variable membrane, and the bottom of the lower guide hole is flush with the bottom surface of the oxygenation membrane.

[0024] Preferably, a second isolation component is provided on the inner wall of the partition, dividing the inner space of the partition into a second occupying space located above and a second blood flow space located below.

[0025] Preferably, the second isolation component is provided on the inner wall of the partition corresponding to the top end of the lower guide hole, and the second isolation component is a protrusion protruding toward the bleeding outlet, and the protrusion is a conical protrusion.

[0026] Preferably, a connecting component is provided at the bottom end of the lower guide hole on the partition, and the connecting component and the second isolation component form a blood outlet path that is connected to the bleeding outlet.

[0027] Preferably, the cross-sectional shape of the blood outlet channel is Y-shaped.

[0028] Preferably, water enters from the water inlet, passes through the temperature-variable membrane, the second occupying space, and the temperature-variable membrane in sequence, and then flows out from the water outlet.

[0029] Preferably, the outer shell includes a shell body, an upper cover arranged at the top opening of the shell body and a lower cover arranged at the bottom opening of the shell body, the water inlet, water outlet and air inlet are arranged on the upper cover, the air outlet is arranged on the lower cover, and the oxygenation temperature change component is arranged in the shell body.

[0030] Preferably, a first isolation ring and a second isolation ring are provided on the upper cover, the second isolation ring is arranged around the first isolation ring, the first isolation ring and the second isolation ring enclose a first water path space, the second isolation ring and the side wall of the upper cover enclose a first air path space, the water inlet and the water outlet are respectively connected to the first water path space, and the air inlet is connected to the first air path space.

[0031] A third isolation ring is provided on the lower cover, and the third isolation ring and the side wall of the lower cover form a second air path space, and the air outlet is communicated with the second air path space.

[0032] Due to the adoption of the above technical solution, the present invention has the following advantages compared with the prior art:

[0033] 1. The oxygenator of the present invention has a redesigned overall structure, with the blood inlet and the blood outflow port located at both ends of the axis of the oxygenator. This allows blood to evenly pass through the oxygenation membrane for gas exchange, resulting in a uniform flow field and high gas exchange utilization efficiency of the oxygenation membrane, thereby improving the oxygenation effect.

[0034] 2. The oxygenator of the present invention is provided with a space inside, which can effectively reduce the blood priming volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of the oxygenator of the present invention;

[0036] Figure 2 is a top view of the oxygenator of the present invention;

[0037] Figure 3 A cross-sectional view of the oxygenator of the present invention Figure 1 ;

[0038] Figure 4 A cross-sectional view of the oxygenator of the present invention Figure 2 ;

[0039] Figure 5 It is a structural schematic diagram of the upper cover of the present invention;

[0040] Figure 6 This is a schematic structural diagram of the lower cover of the present invention;

[0041] Figure 7 It is a structural schematic diagram of the core shaft of the present invention;

[0042] Figure 8 is a cross-sectional view of the mandrel of the present invention;

[0043] Figure 9 Schematic diagram of the structure of the separator of the present invention;

[0044] Figure 10 is a cross-sectional view of a separator of the present invention;

[0045] Figure 11 Schematic diagram of blood flow in the oxygenator of the present invention;

[0046] Figure 12 Schematic diagram of the water flow direction of the oxygenator of the present invention;

[0047] Figure 13 Schematic diagram of the gas flow of the oxygenator of the present invention.

[0048] Wherein: 100, outer shell; 101, shell body; 102, upper cover; 103, lower cover; 104, blood inlet; 105, bleeding outlet; 106, water inlet; 107, water outlet; 108, air inlet; 109, air outlet; 110, blood inlet; 111, first expansion portion; 112, second expansion portion; 113, first isolation ring; 114, second isolation ring; 115, third isolation ring; 200, oxygenation temperature change assembly; 2 10. Core shaft; 211. First blood flow space; 212. Guide hole; 213. First space; 214. First isolation component; 220. Variable temperature membrane; 230. Partition; 231. Upper guide hole; 232. Lower guide hole; 233. Second isolation component; 234. Second space; 235. Second blood flow space; 236. Connecting component; 240. Oxygenation membrane; 250. Variable temperature sealing layer; 260. Oxygenation sealing layer. DETAILED DESCRIPTION

[0049] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise specifically defined. In this application, " / " means "or".

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0053] The present invention is described in detail below with reference to specific embodiments.

[0054] In the prior art, due to the structural design of the oxygenator, the blood channel flow field is unevenly distributed. Therefore, the applicant proposed this technical solution:

[0055] An oxygenator, comprising:

[0056] The shell has a blood inlet on the top and a bleeding outlet on the bottom, a water inlet and a water outlet on the top, an air inlet on the upper part and an air outlet on the bottom;

[0057] The oxygenation temperature-variable component is vertically arranged in the housing. The oxygenation temperature-variable component includes, from the inside to the outside, a core shaft, a temperature-variable membrane, a partition, and an oxygenation membrane. The temperature-variable membrane is connected to the water inlet and the water outlet, and the oxygenation membrane is connected to the air inlet and the air outlet. The blood inlet end of the core shaft is connected to the blood inlet, and the bleeding end corresponds to the upper part of the temperature-variable membrane.

[0058] The blood enters the blood inlet through the core shaft and reaches the temperature-variable membrane, then spreads out from the core shaft to the surrounding areas, and then passes through the temperature-variable membrane, the partition, and the oxygenation membrane from top to bottom, and then flows out from the bleeding port.

[0059] The blood inlet and the bleeding outlet are located on the same vertical line.

[0060] The oxygenator of the present invention redesigns the overall structure and places the blood inlet and the blood outlet at the upper and lower ends of the oxygenator, so that the blood can evenly pass through the oxygenation membrane for gas exchange, the flow field is uniform, the gas exchange utilization efficiency of the oxygenation membrane is high, and the oxygenation effect is improved.

[0061] like Figure 1-13As shown, this embodiment provides an oxygenator having a cylindrical structure, comprising a housing 100 and an oxygenation temperature-changing assembly 200 disposed within the housing 100. A blood inlet 104 is provided at the top of the housing 100, a bleeding outlet 105 is provided at the bottom, a water inlet 106 and a water outlet 107 are provided at the top of the housing 100, an air inlet 108 is provided at the top of the housing 100, and an air outlet 109 is provided at the bottom of the housing 100. The blood inlet 104 and bleeding outlet 105 are located at opposite ends of the axis of the oxygenator. The oxygenation and temperature-variable assembly 200 is vertically disposed within the housing 100. From the inside out, the oxygenation and temperature-variable assembly 200 comprises, in order, a core shaft 210, a temperature-variable membrane 220, a partition 230, and an oxygenation membrane 240. The temperature-variable membrane 220 communicates with the water inlet 106 and the water outlet 107, while the oxygenation membrane 240 communicates with the air inlet 108 and the air outlet 109. The blood inlet end of the core shaft 210 communicates with the blood inlet 104, while the bleeding end corresponds to the upper portion of the temperature-variable membrane 220. During use, blood flows from the blood inlet 104 through the core shaft 210 to the temperature-variable membrane 220, diffuses outward from the core shaft 210, and then diagonally passes through the temperature-variable membrane 220, the partition 230, and the oxygenation membrane 240 from top to bottom before flowing out of the bleeding outlet 105.

[0062] In this embodiment, the oxygenator further includes a variable temperature blocking layer 250 and an oxygenation blocking layer 260 disposed within the housing 100. The variable temperature blocking layer 250 is located on the upper and lower sides of the variable temperature membrane 220, and the oxygenation blocking layer 260 is located on the upper and lower sides of the oxygenation membrane 240. The upper end surfaces of the variable temperature blocking layer 250 and the oxygenation blocking layer 260 are flush.

[0063] In this embodiment, the temperature-variable membrane 220 includes multiple temperature-variable membrane filaments, with flow gaps formed between adjacent temperature-variable membrane filaments for blood to pass through. The oxygenation membrane 240 includes multiple oxygenation pressure membrane filaments, with flow gaps formed between adjacent oxygenation pressure membrane filaments for blood to pass through. Both the temperature-variable membrane 220 and the oxygenation membrane 240 are cylindrical structures, with the oxygenation membrane 240 sheathed outside the temperature-variable membrane 220. The axial height of the temperature-variable membrane 220 is less than the axial height of the oxygenation membrane 240. Specifically, the top surface of the temperature-variable membrane 220 is flush with the top surface of the oxygenation membrane 240, and the axial height of the temperature-variable membrane 220 is 1 / 2-2 / 3 of the axial height of the oxygenation membrane 240.

[0064] In this embodiment, the blood inlet 104 is connected to the blood inlet end of the core shaft 210 through the blood inlet line 110 . The blood inlet line 110 extends from the blood inlet 104 , passes through the through hole provided on the shell 100 and is connected to the blood inlet end of the core shaft 210 .

[0065] In order to better diffuse the blood, the blood inlet line 110 is provided with a first expansion portion 111 above the housing 100 . The diameter of the line corresponding to the first expansion portion 111 gradually widens as it moves away from the blood inlet 104 .

[0066] A second expansion portion 112 is provided on the inner wall of the bleeding end of the blood inlet channel 110 . The diameter of the inner wall corresponding to the second expansion portion 112 gradually widens as it moves away from the blood inlet 104 .

[0067] In this embodiment, the core shaft 210 is sleeved within the temperature-variable membrane 220 and is cylindrical in structure. A first blood flow space 211 is defined within the core shaft 210. A guide hole 212 is defined on the shaft wall corresponding to the first blood flow space 211. The guide hole 212 is positioned corresponding to the upper portion of the temperature-variable membrane 220. Blood flows into the core shaft 210 through the blood inlet end and out through the guide hole 212. Multiple guide holes 212 are provided, evenly distributed along the circumference of the core shaft 210, to disperse and drain blood.

[0068] A first space 213 is provided inside the core shaft 210, which is separated from the first blood flow space 211. The first space 213 is further away from the blood inlet end than the first blood flow space 211. The provision of the first space 213 can reduce the blood priming volume.

[0069] The first space 213 is separated from the first blood flow space 211 by a first isolation member 214 provided on the inner wall of the core shaft 210. The first isolation member 214 is a curved protrusion protruding toward the blood inlet end. This structure further disperses the blood, forming a uniform blood flow field.

[0070] In this embodiment, the upper end of the mandrel 210 passes through the temperature-variable sealing layer 250 located above the temperature-variable membrane 220, and the top surface of the mandrel 210 is flush with the top surface of the temperature-variable sealing layer 250 located above the temperature-variable membrane 220. The lower end of the mandrel 210 passes through the temperature-variable sealing layer 250 located below the temperature-variable membrane 220, and the bottom surface of the mandrel 210 is flush with the bottom surface of the temperature-variable sealing layer 250 located below the temperature-variable membrane 220. The top of the guide hole 212 is flush with the top surface of the temperature-variable membrane 220, and the bottom of the guide hole 212 is located corresponding to the middle of the temperature-variable membrane 220. The first isolation component 214 is provided on the inner wall of the mandrel 210 corresponding to the bottom end of the guide hole 212.

[0071] In this embodiment, the end of the blood inlet channel 110 extends into the core shaft 210 , and the end surface of the second expansion portion 112 is parallel to the top of the guide hole 212 .

[0072] In this embodiment, the partition 230 is arranged between the temperature variable membrane 220 and the oxygenation membrane 240, and the structure of the partition 230 is cylindrical. The top surface of the partition 230 is flush with the top surface of the oxygenation blocking layer 260 located on the upper side of the oxygenation membrane 240, and the bottom surface of the partition 230 is flush with the bottom surface of the oxygenation blocking layer 260 located on the lower side of the oxygenation membrane 240.

[0073] The upper portion of the partition 230 is provided with an upper guide hole 231, and the lower portion is provided with a lower guide hole 232. The upper guide hole 231 connects the temperature-variable membrane 220 and the oxygenation membrane 240, while the lower guide hole 232 connects the oxygenation membrane 240 and the bleeding port 105. Multiple upper guide holes 231 are provided, evenly spaced along the circumference of the partition 230, thereby uniformly distributing the blood flow field. Multiple lower guide holes 232 are also provided, evenly spaced along the circumference of the partition 230, thereby uniformly distributing the blood flow field.

[0074] Specifically, the top of the upper guide hole 231 is flush with the top surface of the oxygenation membrane 240 , the bottom of the upper guide hole 231 is flush with the bottom surface of the temperature-variable membrane 220 , and the bottom of the lower guide hole 232 is flush with the bottom surface of the oxygenation membrane 240 .

[0075] In this embodiment, a second isolation member 233 is provided on the inner wall of the partition 230, dividing the interior space of the partition 230 into a second space 234 located above and a second blood flow space 235 located below. The provision of the second space 234 can effectively reduce the blood priming volume.

[0076] The second isolation member 233 is provided on the inner wall of the partition 230 corresponding to the top of the lower guide hole 232. The second isolation member 233 is a conical protrusion protruding toward the bleeding outlet 105. This structure has a drainage effect on blood.

[0077] In this embodiment, a connecting component 236 is provided on the partition plate 230 at the bottom end of the lower guide hole 232. The connecting component 236 and the second isolation component 233 form a blood outlet path that communicates with the bleeding port 105. The cross-section of the blood outlet path is Y-shaped.

[0078] In this embodiment, the housing 100 includes a housing 101, an upper cover 102 located at the open top of the housing 101, and a lower cover 103 located at the open bottom of the housing 101. A water inlet 106, a water outlet 107, and an air inlet 108 are located on the upper cover 102, and an air outlet 109 is located on the lower cover 103. The oxygenation and temperature-changing assembly 200 is disposed within the housing 101. Specifically, the water inlet 106 and the water outlet 107 are located on the top surface of the upper cover 102, the air inlet 108 is located on the side wall of the upper cover 102, and the air outlet 109 is located on the bottom surface of the lower cover 103. The axis of the air inlet 108 is perpendicular to the axis of the blood inlet 104, and the axis of the air outlet 109 is parallel to the axis of the blood outlet 105.

[0079] The upper cover 102 is provided with a first isolating ring 113 and a second isolating ring 114. The second isolating ring 114 surrounds the first isolating ring 113. The first and second isolating rings 113 and 114 are of equal height and are both lower than the sidewalls of the upper cover 102. The first and second isolating rings 113 and 114 enclose a first water path, while the second isolating ring 114 and the sidewalls of the upper cover 102 enclose a first air path. The water inlet 106 and water outlet 107 are respectively connected to the first water path, and the air inlet 108 is connected to the first air path.

[0080] A third isolation ring 115 is provided on the lower cover 103. The third isolation ring 115 is lower than the side wall of the lower cover 103. The third isolation ring 115 and the side wall of the lower cover 103 form a second air path space, and the air outlet 109 is connected to the second air path space.

[0081] In this embodiment, water enters from the water inlet 106 , passes through the temperature-variable membrane 220 , the second occupying space 234 , and the temperature-variable membrane 220 in sequence, and then flows out from the water outlet 107 .

[0082] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0083] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An oxygenator, characterized in that include: A housing (100), wherein the upper portion of the housing (100) is provided with a blood inlet (104), the lower portion is provided with a bleeding outlet (105), the top portion of the housing (100) is provided with a water inlet (106) and a water outlet (107), the upper portion of the housing (100) is provided with an air inlet (108), and the bottom portion of the housing (100) is provided with an air outlet (109); The oxygenation temperature-variable component (200) is vertically arranged in the housing (100), and the oxygenation temperature-variable component (200) includes, from the inside to the outside, a core shaft (210), a temperature-variable membrane (220), a partition (230), and an oxygenation membrane (240). The temperature-variable membrane (220) is connected to the water inlet (106) and the water outlet (107), and the oxygenation membrane (240) is connected to the air inlet (108) and the air outlet (109). The blood inlet end of the core shaft (210) is connected to the blood inlet (104), and the bleeding end corresponds to the upper part of the temperature-variable membrane (220); The blood flows from the blood inlet (104) through the core shaft (210) to the temperature-variable membrane (220), diffuses in all directions with the core shaft (210) as the center, and obliquely passes through the temperature-variable membrane (220), the partition (230), and the oxygenation membrane (240) from top to bottom before flowing out from the bleeding port (105); The blood inlet (104) and the bleeding outlet (105) are located on the same vertical line; The partition (230) is provided between the temperature-variable membrane (220) and the oxygenation membrane (240), and the structure of the partition (230) is cylindrical. The upper portion of the partition (230) is provided with an upper guide hole (231), and the lower portion is provided with a lower guide hole (232). The upper guide hole (231) is connected to the temperature-variable membrane (220) and the oxygenation membrane (240), and the lower guide hole (232) is connected to the oxygenation membrane (240) and the bleeding port (105). A second isolation component (233) is provided on the inner wall of the partition (230), dividing the inner space of the partition (230) into a second occupying space (234) located above and a second blood flow space (235) located below; A connecting component (236) is provided on the partition (230) at the bottom end of the lower guide hole (232); the connecting component (236) and the second isolation component (233) form a blood outflow path, which is in communication with the bleeding port (105); The cross-sectional shape of the blood outlet channel is Y-shaped.

2. The oxygenator according to claim 1, characterized in that The oxygenator is a cylindrical structure, and the blood inlet (104) and the bleeding outlet (105) are located at two ends of the axis of the oxygenator.

3. The oxygenator according to claim 1, characterized in that The invention also includes a variable temperature blocking layer (250) and an oxygenation blocking layer (260) arranged in the housing (100), wherein the variable temperature blocking layer (250) is located on the upper and lower sides of the variable temperature membrane (220), and the oxygenation blocking layer (260) is located on the upper and lower sides of the oxygenation membrane (240).

4. The oxygenator according to claim 3, characterized in that The temperature-variable membrane (220) and the oxygenation membrane (240) are both cylindrical structures, and the oxygenation membrane (240) is sleeved outside the temperature-variable membrane (220), and the axial height of the temperature-variable membrane (220) is smaller than the axial height of the oxygenation membrane (240); The top surface of the temperature-variable membrane (220) is flush with the top surface of the oxygenation membrane (240), and the axial height of the temperature-variable membrane (220) is 1 / 2-2 / 3 of the axial height of the oxygenation membrane (240).

5. The oxygenator according to claim 3, characterized in that The core shaft (210) is sleeved in the temperature-variable membrane (220), and the structure of the core shaft (210) is cylindrical. A first blood flow space (211) is provided inside the core shaft (210), and a guide hole (212) is provided on the shaft wall corresponding to the first blood flow space (211). The position of the guide hole (212) corresponds to the upper part of the temperature-variable membrane (220), and blood flows in through the blood inlet end of the core shaft (210) and flows out from the guide hole (212); A first occupying space (213) separated from the first blood flow space (211) is further provided inside the core shaft (210), and the first occupying space (213) is farther away from the blood inlet end relative to the first blood flow space (211); The first occupying space (213) and the first blood flow space (211) are separated by a first isolation component (214) provided on the inner wall of the core shaft (210), wherein the first isolation component (214) is a protrusion protruding toward the blood inlet end, and the protrusion is an arc-shaped protrusion; The upper end of the core shaft (210) passes through the variable temperature sealing layer (250) located on the upper side of the variable temperature membrane (220), and the top surface of the core shaft (210) is flush with the top surface of the variable temperature sealing layer (250) located on the upper side of the variable temperature membrane (220); the lower end of the core shaft (210) passes through the variable temperature sealing layer (250) located on the lower side of the variable temperature membrane (220), and the core shaft (210) The bottom surface of the guide hole (212) is flush with the bottom surface of the variable temperature sealing layer (250) located on the lower side of the variable temperature membrane (220), the top of the guide hole (212) is flush with the top surface of the variable temperature membrane (220), the bottom end of the guide hole (212) is correspondingly arranged in the middle of the variable temperature membrane (220), and the first isolation component (214) is arranged at the inner wall of the core shaft (210) corresponding to the bottom end of the guide hole (212).

6. The oxygenator according to claim 5, characterized in that The blood inlet end of the core shaft (210) is connected to the blood inlet port (104) via a blood inlet line (110). The blood inlet line (110) extends from the blood inlet port (104), passes through the housing (100) and is connected to the blood inlet end of the core shaft (210). The blood inlet line (110) is provided with a first expansion portion (111) above the housing (100). The diameter of the line corresponding to the first expansion portion (111) gradually widens as it moves away from the blood inlet port (104). A second expansion portion (112) is provided on the inner wall of the blood inlet channel (110) at the bleeding end, and the diameter of the inner wall corresponding to the second expansion portion (112) gradually widens as it moves away from the blood inlet (104); The end surface of the second expansion portion (112) is parallel to the top end of the guide hole (212).

7. The oxygenator according to claim 3, characterized in that The top end of the upper flow guide hole (231) is flush with the top surface of the oxygenation membrane (240), the bottom end of the upper flow guide hole (231) is flush with the bottom surface of the temperature-variable membrane (220), and the bottom end of the lower flow guide hole (232) is flush with the bottom surface of the oxygenation membrane (240); The second isolation component (233) is arranged on the inner wall of the partition (230) corresponding to the top end of the lower guide hole (232), and the second isolation component (233) is a protrusion protruding toward the bleeding outlet (105), and the protrusion is a conical protrusion.

8. The oxygenator according to claim 7, characterized in that Water enters from the water inlet (106), passes through the temperature-variable membrane (220), the second occupying space (234), and the temperature-variable membrane (220) in sequence, and then flows out from the water outlet (107).

9. The oxygenator according to claim 1, wherein: The housing (100) comprises a shell body (101), an upper cover (102) provided at an open top of the shell body (101), and a lower cover (103) provided at an open bottom of the shell body (101); the water inlet (106), the water outlet (107), and the air inlet (108) are provided on the upper cover (102); the air outlet (109) is provided on the lower cover (103); and the oxygenation temperature-changing component (200) is provided in the shell body (101); The upper cover (102) is provided with a first isolating ring (113) and a second isolating ring (114), the second isolating ring (114) is arranged around the first isolating ring (113), the first isolating ring (113) and the second isolating ring (114) enclose a first water path space, the second isolating ring (114) and the side wall of the upper cover (102) enclose a first air path space, the water inlet (106) and the water outlet (107) are respectively communicated with the first water path space, and the air inlet (108) is communicated with the first air path space. A third isolation ring (115) is provided on the lower cover (103), and the third isolation ring (115) and the side wall of the lower cover (103) enclose a second air path space, and the air outlet (109) is in communication with the second air path space.

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