Oxygenator

Abstract

The invention relates to an oxygenator, which comprises a shell, a blood inlet, a blood outlet, a water inlet, a water outlet, an air inlet and an air outlet, wherein the upper part of the shell is provided with a blood inlet; the lower part of the shell is provided with a blood outlet; the top of the shell is provided with a water inlet and a water outlet; the oxygenation temperature changing assembly is vertically arranged in the shell and sequentially comprises a mandrel, a temperature changing film, a partition plate and an oxygenation film from inside to outside, the temperature changing film is communicated with the water inlet and the water outlet, the oxygenation film is communicated with the air inlet and the air outlet, the blood inlet end of the mandrel is communicated with the blood inlet, and the blood outlet end of the mandrel corresponds to the upper portion of the temperature changing film; wherein blood reaches the variable-temperature film from the blood inlet through the mandrel, is diffused towards the periphery by taking the mandrel as the center, obliquely penetrates through the variable-temperature film, the partition plate and the oxygenation film from top to bottom and then flows out of the blood outlet; and the blood inlet and the blood outlet are positioned on the same vertical line. According to the oxygenator, blood uniformly penetrates through the oxygenation membrane for gas exchange, the flow field is uniform, and the gas exchange utilization efficiency of the oxygenation membrane is high.

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 method of drawing blood out of the body, oxygenating it through an artificial heart-lung bypass made of special materials, and then injecting it into the patient's arterial or venous system, playing a partial role of replacing the heart and lungs and maintaining the oxygenation and blood supply of human organs and tissues. The oxygenator is an important component in the ECMO system. The oxygenator provides the maintenance of blood temperature outside the body and the execution of blood oxygenation functions. There are mainly three circulation pathways in the oxygenator: blood path, blood enters the oxygenator through a specific channel and is heated by the variable temperature membrane area of ​​the oxygenator to maintain a constant blood temperature; gas path, oxygen penetrates into the blood through the oxygenation membrane filaments in the oxygenation area, and at the same time, carbon dioxide in the venous blood penetrates into the oxygenation membrane filaments and is released from the blood; water path, liquid with a constant temperature provides heat energy to the blood through the variable temperature membrane filaments to maintain the temperature of the blood in the extracorporeal circulation pipeline.

[0003] At present, most of the blood inlet and bleeding outlet of oxygenators form a 90° angle, which easily causes uneven distribution of blood channel flow field. In order to avoid this situation, a few oxygenators place the blood inlet and bleeding outlet horizontally at the two ends of the bottom of the oxygenator, but this design causes uneven distribution of blood above and below 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 outer shell has a blood inlet on the top and a blood outlet on the bottom, a water inlet and a water outlet on the top, an air inlet on the upper part of the outer shell, and an air outlet on the bottom of the outer shell;

[0008] The oxygenation temperature-variable component is vertically arranged in the housing. The oxygenation temperature-variable component includes a core shaft, a temperature-variable membrane, a baffle, and an oxygenation membrane from the inside to the outside. The temperature-variable membrane is connected to the water inlet and the water outlet, 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, diffuses around the core shaft, and passes through the temperature-variable membrane, the partition, and the oxygenation membrane from top to bottom, and then flows out from the bleeding outlet.

[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 at the upper and lower sides of the variable temperature membrane, and the oxygenation blocking layer is located at 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 space-occupying space separated from the first blood flow space is further provided inside the core shaft, and the first space-occupying space is far 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 isolating component arranged on the inner wall of the core shaft, and the first isolating 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 part 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 at the bleeding end of the blood inlet channel, and the inner wall diameter corresponding to the second expansion portion gradually becomes wider 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 flow guide hole is flush with the top surface of the oxygenation membrane, the bottom of the upper flow guide hole is flush with the bottom surface of the temperature-variable membrane, and the bottom of the lower flow 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 at the upper part and a second blood flow space located at the lower part.

[0025] Preferably, the second isolation component is arranged 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 passage 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 isolating ring is arranged on the lower cover, and the third isolating ring and the side wall of the lower cover enclose 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 redesigns the overall structure, and places the blood inlet and the blood outlet at both ends of the axis of the oxygenator, so that the blood evenly passes 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;

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

[0035] Figure 1 It is a 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 The cross-sectional view of the oxygenator of the present invention Figure 1 ;

[0038] Figure 4 The 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 It is a structural schematic diagram of the lower cover of the present invention;

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

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

[0043] Fig. 9 It is a schematic diagram of the structure of the partition of the present invention;

[0044] Fig.10 is a cross-sectional view of a partition of the present invention;

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

[0046] Fig.12 Schematic diagram of the flow direction of water in the oxygenator of the present invention;

[0047] Fig.13 Schematic diagram of the flow direction of gas in the oxygenator of the present invention.

[0048] Wherein: 100, 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 part; 112, second expansion part; 113, first isolation ring; 114, second isolation ring; 115, third isolation ring; 200, oxygenation temperature change component; 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] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by 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 a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. 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 as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In this application, " / " means "or".

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related 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 outer shell has a blood inlet on the top and a blood outlet on the bottom, a water inlet and a water outlet on the top, an air inlet on the upper part of the outer shell, and an air outlet on the bottom of the outer shell;

[0057] The oxygenation temperature-variable component is vertically arranged in the housing. The oxygenation temperature-variable component includes a core shaft, a temperature-variable membrane, a baffle, and an oxygenation membrane from the inside to the outside. The temperature-variable membrane is connected to the water inlet and the water outlet, 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, diffuses around the core shaft, and passes through the temperature-variable membrane, the partition, and the oxygenation membrane from top to bottom, and then flows out from the bleeding outlet.

[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 evenly passes 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, which is a cylindrical structure, including a housing 100 and an oxygenation temperature-changing assembly 200 disposed in the housing 100. A blood inlet 104 is provided on the upper portion of the housing 100, a bleeding outlet 105 is provided on the lower portion, a water inlet 106 and a water outlet 107 are provided on the top of the housing 100, an air inlet 108 is provided on the upper portion of the housing 100, and an air outlet 109 is provided on the bottom portion of the housing 100. The blood inlet 104 and the bleeding outlet 105 are located at two ends of the axis of the oxygenator. The oxygenation temperature-variable assembly 200 is vertically arranged in the housing 100. The oxygenation temperature-variable assembly 200 includes a core shaft 210, a temperature-variable membrane 220, a partition 230, and an oxygenation membrane 240 from the inside to the outside. 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. When in use, blood reaches the temperature-variable membrane 220 from the blood inlet 104 through the core shaft 210, diffuses to the surroundings with the core shaft 210 as the center, and passes through the temperature-variable membrane 220, the partition 230, and the oxygenation membrane 240 from top to bottom, and then flows out from the bleeding outlet 105.

[0062] In this embodiment, the oxygenator also includes a variable temperature blocking layer 250 and an oxygenation blocking layer 260 arranged in the outer shell 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 a plurality of temperature-variable membrane wires, and flow gaps are formed between adjacent temperature-variable membrane wires for blood to pass through. The oxygenation membrane 240 includes a plurality of oxygen pressure membrane wires, and flow gaps are formed between adjacent oxygen pressure membrane wires for blood to pass through. The temperature-variable membrane 220 and the oxygenation membrane 240 are both constructed as 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 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 housing 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 , and the inner wall diameter 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 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. Blood flows in through the blood inlet end of the core shaft 210 and flows out from the guide hole 212. A plurality of guide holes 212 are provided, which are evenly arranged along the circumference of the core shaft 210 to disperse and drain blood.

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

[0069] The first space 213 and the first blood flow space 211 are separated by a first isolation component 214 disposed on the inner wall of the core shaft 210. The first isolation component 214 is a protrusion protruding toward the blood inlet end, and the protrusion is an arc-shaped protrusion. The structure here can further disperse the blood and form a uniform flow field for the blood.

[0070] In this embodiment, the upper end of the mandrel 210 passes through the variable temperature blocking layer 250 located on the upper side of the variable temperature film 220, and the top surface of the mandrel 210 is flush with the top surface of the variable temperature blocking layer 250 located on the upper side of the variable temperature film 220, and the lower end of the mandrel 210 passes through the variable temperature blocking layer 250 located on the lower side of the variable temperature film 220, and the bottom surface of the mandrel 210 is flush with the bottom surface of the variable temperature blocking layer 250 located on the lower side of the variable temperature film 220. The top of the guide hole 212 is flush with the top surface of the variable temperature film 220, the bottom end of the guide hole 212 is correspondingly arranged in the middle of the variable temperature film 220, and the first isolation component 214 is arranged at 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 part of the partition 230 is provided with an upper guide hole 231, and the lower part is provided with a lower guide hole 232. The upper guide hole 231 connects the temperature-changing membrane 220 and the oxygenation membrane 240, and the lower guide hole 232 connects the oxygenation membrane 240 and the bleeding port 105. A plurality of upper guide holes 231 are provided, which are evenly arranged along the circumference of the partition 230 to achieve a uniform blood flow field. A plurality of lower guide holes 232 are provided, which are evenly arranged along the circumference of the partition 230 to achieve a uniform 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 component 233 is provided on the inner wall of the partition 230, dividing the inner space of the partition 230 into a second space 234 located at the top and a second blood flow space 235 located at the bottom. The second space 234 can effectively reduce the blood priming volume.

[0076] The second isolation part 233 is arranged on the inner wall of the partition 230 corresponding to the top of the lower guide hole 232. The second isolation part 233 is a protrusion protruding toward the bleeding outlet 105, and the protrusion is a conical protrusion. The structure here plays a role in draining blood.

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

[0078] In this embodiment, the housing 100 includes a housing 101, an upper cover 102 disposed at the top opening of the housing 101, and a lower cover 103 disposed at the bottom opening of the housing 101. A water inlet 106, a water outlet 107, and an air inlet 108 are disposed on the upper cover 102, an air outlet 109 is disposed on the lower cover 103, and an oxygenation temperature-changing assembly 200 is disposed in the housing 101. Specifically, the water inlet 106 and the water outlet 107 are disposed on the top surface of the upper cover 102, the air inlet 108 is disposed on the side wall of the upper cover 102, the air outlet 109 is disposed on the bottom surface of the lower cover 103, the axial direction of the air inlet 108 is perpendicular to the axial direction of the blood inlet 104, and the axial direction of the air outlet 109 is parallel to the axial direction 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 is arranged around the first isolating ring 113, and the heights of the first isolating ring 113 and the second isolating ring 114 are equal and both are lower than the height of the side wall of the upper cover 102. 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 connected to the first water path space, and the air inlet 108 is connected to the first air path space.

[0080] The lower cover 103 is provided with a third isolating ring 115, the height of which is lower than the height of the side wall of the lower cover 103. The third isolating ring 115 and the side wall of the lower cover 103 enclose 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 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-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An oxygenator, characterized in that: include: A housing (100), wherein a blood inlet (104) is provided on the upper side of the housing (100), a blood outlet (105) is provided on the lower side of the housing (100), a water inlet (106) and a water outlet (107) are provided on the top of the housing (100), an air inlet (108) is provided on the upper part of the housing (100), and an air outlet (109) is provided on the bottom of the housing (100); 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 around the core shaft (210), and passes through the temperature-variable membrane (220), the partition (230), and the oxygenation membrane (240) from top to bottom, and then flows out from the bleeding port (105); The blood inlet (104) and the bleeding outlet (105) are located on the same vertical line.

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

3. The oxygenator according to claim 1, characterized in that It also includes a variable temperature blocking layer (250) and an oxygenation blocking layer (260) disposed 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); Preferably, 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); Preferably, 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); Preferably, the first occupying space (213) and the first blood flow space (211) are separated by a first isolation component (214) arranged on the inner wall of the core shaft (210), and the first isolation component (214) is a protrusion protruding toward the blood inlet end, and the protrusion is an arc-shaped protrusion; Preferably, the upper end of the mandrel (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 mandrel (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), and the lower end of the mandrel (210) passes through the variable temperature sealing layer (250) located on the lower side of the variable temperature membrane (220), and the mandrel (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 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 arranged corresponding to the middle part of the variable temperature membrane (220), and the first isolation component (214) is arranged on 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); Preferably, a second expansion portion (112) is provided on the inner wall of the bleeding end of the blood inlet channel (110), and the inner wall diameter corresponding to the second expansion portion (112) gradually widens as it moves away from the blood inlet (104); Preferably, an end surface of the second expansion portion (112) is parallel to a top end of the guide hole (212).

7. The oxygenator according to claim 3, characterized in that 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 upper part of the partition (230) is provided with an upper flow guide hole (231), and the lower part is provided with a lower flow guide hole (232). The upper flow guide hole (231) communicates with the temperature-variable membrane (220) and the oxygenation membrane (240), and the lower flow guide hole (232) communicates with the oxygenation membrane (240) and the bleeding port (105); Preferably, 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); Preferably, 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 at the top and a second blood flow space (235) located at the bottom; Preferably, 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 A connecting component (236) is provided on the partition (230) at the bottom end of the lower guide hole (232), and the connecting component (236) and the second isolation component (233) form a blood outlet path, which is connected to the bleeding port (105); Preferably, the cross-sectional shape of the blood outlet channel is Y-shaped.

9. 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).

10. The oxygenator according to claim 1, characterized in that The housing (100) comprises a housing (101), an upper cover (102) provided at an open top of the housing (101), and a lower cover (103) provided at an open bottom of the housing (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 housing (101); Preferably, the upper cover (102) is provided with a first isolation ring (113) and a second isolation ring (114), the second isolation ring (114) is arranged around the first isolation ring (113), the first isolation ring (113) and the second isolation ring (114) enclose a first water path space, the second isolation 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 connected to the first water path space, and the air inlet (108) is connected to the first air path space. A third isolation ring (115) is provided on the lower cover (103), 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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