Oxygenation system

Abstract

The invention relates to the technical field of medical treatment, and particularly discloses an oxygenation system which comprises an oxygenator and a temperature changing device, the oxygenator is used for oxygenating venous blood, a first gas pipeline is arranged in the oxygenator, and the first gas pipeline is provided with a first port and a second port; the temperature changing device comprises a second gas pipeline, the second gas pipeline is provided with a first gas path port and a second gas path port, the first gas path port is connected with the first port, the second gas path port is connected with the second port, the second gas pipeline is connected with a heating module, and the heating module heats gas flowing through the second gas pipeline. And the heated gas circularly flows in the second gas pipeline and the first gas pipeline. The mode of heating through water circulation in the traditional technology is broken through, the blood temperature is guaranteed, meanwhile, the overall weight is reduced, use in the emergency rescue environment is facilitated, the risk of electric leakage does not need to be considered, safety is high, meanwhile, the risk of freezing does not need to be considered, and normal use can be achieved in the extremely low-temperature environment.

Description

Technical Field

[0001] The present application relates to the field of medical technology, and in particular to an oxygenation system. Background Art

[0002] ECMO (extracorporeal membrane oxygenation) is commonly used in emergency rescue. It can initiate life support at the scene of acute cardiovascular disease or acute respiratory disease, which helps to avoid multiple organ failure caused by disease deterioration and greatly improves the patient's survival rate.

[0003] At present, in the process of using ECMO to provide life support, the patient's blood needs to circulate outside the body. If the ambient temperature is low, the temperature of the blood returned to the patient will be low, which may easily cause adverse consequences such as arrhythmia, hypothermia, poor organ perfusion, etc., which will seriously endanger the patient's life. In order to solve the above problems, a variable temperature circuit is usually set in the ECMO oxygenator to adjust the temperature of the blood flowing through the oxygenator to ensure that the temperature of the blood returned to the patient is close to the patient's body temperature.

[0004] However, the current temperature change method usually uses water or a solution mainly composed of water, which has many disadvantages. Summary of the invention

[0005] Based on this, it is necessary to provide an oxygenation system to address the above problems, including:

[0006] An oxygenator, for oxygenating venous blood, wherein an independent first gas pipeline is provided in the oxygenator, and the first gas pipeline has a first port and a second port;

[0007] The temperature changing device comprises a second gas pipeline, wherein the second gas pipeline has a first gas path port and a second gas path port, wherein the first gas path port is connected to the first port, and the second gas port is connected to the second port, and the second gas pipeline is connected to a heating module, and the heating module heats the gas flowing through the second gas pipeline, and the heated gas circulates in the second gas pipeline and the first gas pipeline.

[0008] In one embodiment, the heating module includes a heating wire.

[0009] In one of the embodiments, a gas flow regulating module is further provided in the second gas pipeline.

[0010] In one of the embodiments, the gas flow rate in the second gas pipeline and the first gas pipeline is 20 L / min to 30 L / min.

[0011] In one of the embodiments, the gas flow regulating module includes a gas driving device.

[0012] In one embodiment, the heating module is disposed in the air outlet direction of the gas driving device.

[0013] In one of the embodiments, at least one temperature measuring module is disposed on the first gas pipeline and / or the second gas pipeline.

[0014] In one embodiment, the oxygenation system further includes a controller, and the controller is electrically connected to the temperature measurement module and the heating module respectively.

[0015] In one embodiment, the temperature measurement module includes a temperature sensor.

[0016] In one embodiment, the gas includes air or oxygen.

[0017] The oxygenation system provided in the embodiment of the present application is provided with an independent first gas pipeline in the oxygenator, and the two ends of the first gas pipeline are respectively a first port and a second port, wherein the first port can be connected to the first gas pipeline port of the second gas pipeline in the temperature changing device, and the second port can be connected to the second gas pipeline port of the second gas pipeline, that is, the first gas pipeline and the second gas pipeline can jointly constitute a gas circulation loop, and the heating module connected by the second gas pipeline can heat the gas in the gas circulation loop, so that the heated gas can heat the blood in the oxygenator through the gas circulation loop, so that the temperature of the blood returned to the patient can be better controlled. The above oxygenation system breaks through the traditional technology of heating by water circulation, while ensuring the blood temperature, reducing the overall weight, improving portability, facilitating use in emergency rescue environments, and there is no need to consider the risk of leakage, improving the safety of system use, and there is no need to consider the risk of freezing, and it can be used normally in extremely low temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of an oxygenation system provided in one embodiment of the present application;

[0019] Figure 2 A schematic diagram of the structure of an oxygenation system provided in another embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the structure of an oxygenation system provided in another embodiment of the present application.

[0021] Description of reference numerals:

[0022] 100, oxygenator; 110, first gas pipeline; 111, first port; 112, second port;

[0023] 200, temperature changing device; 210, second gas pipeline; 211, first gas path port; 212, second gas path port; 220, heating module; 230, gas flow regulating module; 240, temperature measuring module. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to understand the disclosure of the present application more thoroughly and comprehensively.

[0025] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] 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 the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] As described in the background technology, ECMO (extracorporeal membrane oxygenation) is commonly used in emergency rescue. It can initiate life support at the scene of acute cardiovascular disease or acute respiratory disease, which helps to avoid multiple organ failure caused by disease deterioration and greatly improves the patient's survival rate.

[0029] Because the patient's blood needs to circulate outside the body during ECMO life support, if the ambient temperature is low, the temperature of the blood returned to the patient will be low, which can easily cause adverse consequences such as arrhythmia, hypothermia, and poor organ perfusion. This will affect the support effect and even endanger the patient's life.

[0030] In order to solve the above problems, a variable temperature circuit is usually set in the ECMO oxygenator. The constant temperature circulating water can usually be set to 37°C or other specified temperature to adjust the temperature of the blood flowing through the oxygenator to ensure that the temperature of the blood returned to the patient is close to the patient's body temperature.

[0031] However, using water as a temperature-changing medium has the following disadvantages: the water circulation system and its temperature-changing device are heavy, difficult to carry, and difficult to use in emergency rescue environments; since water is conductive, the temperature-changing device (heating wire or semiconductor chip) usually cannot directly contact water but needs to be conducted through insulation, which will cause power loss, and thus cause the system to consume a lot of power, making it difficult to support long-term operation through a portable power supply; at the same time, due to the conductivity of water, the system may leak water due to bumps and collisions during transportation, which will easily bring short-circuit risks to other adjacent equipment; in addition, when used in extremely cold environments, the water-based system may be frozen in standby mode, causing the system to fail to operate normally.

[0032] In response to the above problems, an embodiment of the present application provides an oxygenation system, which can solve a series of problems caused by the above water circulation system.

[0033] Reference Figure 1 The oxygenation system provided in this embodiment includes an oxygenator 100 and a temperature changing device 200 .

[0034] The oxygenator 100 is used to oxygenate venous blood, and an independent first gas pipeline 110 is provided in the oxygenator 100, and the first gas pipeline 110 has a first port 111 and a second port 112. The temperature changing device 200 includes a second gas pipeline 210, and the second gas pipeline 210 has a first gas path port 211 and a second gas path port 212, the first gas path port 211 is connected to the first port 111, and the second gas port is connected to the second port 112, and the second gas pipeline 210 is connected to a heating module 220, and the heating module 220 heats the gas flowing through the second gas pipeline 210, and the heated gas circulates in the second gas pipeline 210 and the first gas pipeline 110.

[0035] In the oxygenation system provided in the embodiment of the present application, an independent first gas pipeline 110 is arranged in the oxygenator 100, and the two ends of the first gas pipeline 110 are respectively a first port 111 and a second port 112, wherein the first port 111 can be connected to the first gas circuit port 211 of the second gas pipeline 210 in the temperature changing device 200, and the second port 112 can be connected to the second gas circuit port 212 of the second gas pipeline 210, that is, the first gas pipeline 110 and the second gas pipeline 210 can jointly constitute a gas circulation loop, and the heating module 220 connected through the second gas pipeline 210 can heat the gas in the gas circulation loop, so that the heated gas can heat the blood in the oxygenator 100 through the gas circulation loop, so that the temperature of the blood returned to the patient can be better controlled. The above-mentioned oxygenation system breaks through the traditional technology of heating through water circulation. While ensuring the blood temperature, it reduces the overall weight and improves portability, which is conducive to use in emergency rescue environments. There is no need to consider the risk of leakage, which improves the safety of system use. At the same time, there is no need to consider the risk of freezing, and it can be used normally in extremely low temperature environments.

[0036] In actual applications, venous blood drawn from a patient's body may enter the oxygenator 100 , where the venous blood is oxygenated by oxygen, and the oxygenated blood is then returned to the patient's body.

[0037] In conventional technology, a water circulation system is usually used to adjust the temperature of the blood in the oxygenator 100, but it has many problems as mentioned above. Therefore, the present application changes the blood temperature adjustment method, and sets an independent gas pipeline in the oxygenator 100, which is defined as the first gas pipeline 110 in this embodiment. At the same time, a gas pipeline is also set in the temperature changing device 200, which is defined as the second gas pipeline 210 in this embodiment. Before using the oxygenation system, the first port 111 of the first gas pipeline 110 can be connected with the first gas line port 211 of the second gas pipeline 210, and the second port 112 of the second gas pipeline 210 can be connected with the second gas line port 212 of the second gas pipeline 210, and then the first gas pipeline 110 and the second gas pipeline 210 are connected to form a gas circulation loop. Through the heating effect of the heating module 220 set on the second gas pipeline 210, the temperature of the gas in the gas circulation loop can be adjusted, and then the temperature of the blood in the oxygenator 100 can be adjusted.

[0038] The first gas pipeline 110 is disposed inside the cavity of the oxygenator 100 and is not connected to the cavity of the oxygenator 100. The temperature changing device 200 is detachably connected to the oxygenator 100, thereby improving the portability of the oxygenation system.

[0039] In one embodiment, the heating module 220 may include a heating wire, or may include a semiconductor sheet or other module that can be used to heat the gas pipeline.

[0040] Reference Figure 2 In one embodiment, a gas flow regulating module 230 is further provided in the second gas pipeline 210. The gas flow regulating module 230 can be used to regulate the circulation speed of the gas in the gas pipeline.

[0041] Since the specific heat of water in the water circulation system in the traditional technology is relatively high, the temperature change speed is relatively fast and the heating efficiency is relatively high. Although the specific heat of gas is not as high as that of water, more energy can be delivered by adjusting the airflow circulation speed. Usually, in the water circulation system, the water flow rate of the water tank is 5L / min, and it takes a relatively high power to drive the water flow. In the closed gas circuit of this embodiment, only a relatively low power consumption gas flow regulating module 230 is required to generate a relatively high gas flow rate, which can fully make up for the defect of poor thermal conductivity of the gas.

[0042] In one embodiment, the gas flow rate in the second gas pipeline 210 and the first gas pipeline 110 is 20L / min to 30L / min. Specifically, the gas flow rate can be 20L / min, 25L / min, or 30L / min. In practical applications, the gas flow rate adjustment module 230 can be adjusted according to current needs to adjust the gas flow rate in the gas pipeline to the required gas flow rate, thereby achieving the effect of adjusting the heat propagation speed.

[0043] In one embodiment, the gas flow regulating module 230 may include a gas driving device. Using a gas driving device as the gas flow regulating module 230 is low in cost and easy to implement.

[0044] In one embodiment, the heating module 220 is arranged in the air outlet direction of the gas driving device. The air outlet direction of the gas driving device is the air flow direction in the gas pipeline, that is, the gas driving device and the heating module 220 are arranged in sequence along the air flow direction, which helps to speed up the flow speed of the heated gas.

[0045] In this embodiment, the gas driving device may be a fan.

[0046] Reference Figure 3 In one embodiment, at least one temperature measuring module 240 is disposed on the first gas pipeline 110 and / or the second gas pipeline 210 .

[0047] That is, at least one temperature measuring module 240 is set in the gas circulation loop formed by the first gas pipeline 110 and the second gas pipeline 210. The temperature measuring module 240 can be set on the first gas pipeline 110, or on the second gas pipeline 210, or on the first gas pipeline 110 and the second gas pipeline 210 at the same time.

[0048] In a preferred embodiment, a plurality of temperature measuring points are provided on the second gas pipeline 210, and a temperature measuring module 240 is provided at each temperature measuring point. Compared with providing the temperature measuring module 240 on the first gas pipeline 110 in the oxygenator 100, providing the temperature measuring module 240 on the external second gas pipeline 210 is more convenient for management, disassembly and installation. In addition, the provision of a plurality of temperature measuring modules 240 is conducive to detecting the temperature at different positions on the second gas pipeline 210, thereby improving the accuracy of temperature detection.

[0049] In one embodiment, the oxygenation system further includes a controller, which is electrically connected to the temperature measurement module 240 and the heating module 220. When the controller obtains the temperature detected by the temperature measurement module 240, the heating module 220 can be adjusted according to the current temperature, so as to adjust the temperature in the gas pipeline in real time.

[0050] In addition, the controller may also be electrically connected to the air flow regulating module 230 to adjust the operating state of the air flow regulating module 230 according to the current temperature.

[0051] In one embodiment, the temperature measurement module 240 may include a temperature sensor.

[0052] In one embodiment, the gas may include air or oxygen. Generally, air can be used. Since air is an insulator, it can be directly heated without considering the risk of leakage, which improves safety. In addition, there is no risk of air freezing, and the device can be started and used normally even in an extremely low temperature environment.

[0053] 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.

[0054] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An oxygenation system, characterized in that: include: An oxygenator, for oxygenating venous blood, wherein an independent first gas pipeline is provided in the oxygenator, and the first gas pipeline has a first port and a second port; The temperature changing device comprises a second gas pipeline, wherein the second gas pipeline has a first gas path port and a second gas path port, wherein the first gas path port is connected to the first port, and the second gas port is connected to the second port, and the second gas pipeline is connected to a heating module, and the heating module heats the gas flowing through the second gas pipeline, and the heated gas circulates in the second gas pipeline and the first gas pipeline.

2. The oxygenation system according to claim 1, characterized in that The heating module includes a heating wire.

3. The oxygenation system according to claim 1, characterized in that The second gas pipeline is also provided with a gas flow regulating module.

4. The oxygenation system according to claim 3, characterized in that The gas flow rate in the second gas pipeline and the first gas pipeline is 20L / min to 30L / min.

5. The oxygenation system according to claim 3, characterized in that The gas flow regulating module includes a gas driving device.

6. The oxygenation system according to claim 5, characterized in that The heating module is arranged in the air outlet direction of the gas driving device.

7. The oxygenation system according to claim 1, characterized in that At least one temperature measuring module is arranged on the first gas pipeline and / or the second gas pipeline.

8. The oxygenation system according to claim 7, characterized in that The oxygenation system further includes a controller, which is electrically connected to the temperature measurement module and the heating module respectively.

9. The oxygenation system according to claim 7, characterized in that The temperature measurement module includes a temperature sensor.

10. The oxygenation system according to claim 1, characterized in that The gas includes air or oxygen.

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