Pre-filling bag for ECMO

Abstract

The utility model relates to the technical field of medical equipment, and particularly discloses a pre-filling bag for ECMO, the pre-filling bag comprises a bag body, the bag body is provided with an inner cavity, the bag body is provided with a liquid inlet, an exhaust port, an outflow port and a backflow port which are communicated with the inner cavity, the exhaust port is covered with a waterproof breathable film, a filter screen is arranged in the inner cavity, and the inner cavity is provided with a water-proof breathable film. And an independent cavity is defined by the filter screen and the reflux inlet. Therefore, when liquid enters the inner cavity of the bag body, air in the liquid can be quickly discharged through the waterproof breathable film, and meanwhile, when the backflow liquid enters the inner cavity of the bag body through the backflow opening, the backflow liquid firstly enters the independent cavity defined by the filter screen and the backflow opening and then flows out through the filter screen, so that gas wrapped in the liquid when the liquid flows back can be effectively intercepted; by means of the pre-filling bag for the ECMO, bubbles can be effectively discharged, and the bubbles are prevented from entering an ECMO pipeline.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a pre-filled bag for ECMO. Background Art

[0002] Extracorporeal membrane oxygenation (ECMO) is mainly used to provide continuous extracorporeal respiration and circulation to patients with severe cardiopulmonary failure to maintain their lives. The ECMO system consists of pipes, oxygenators, blood pumps, monitoring systems, etc. It draws venous blood out of the body, drives the blood to circulate through the blood pump, and returns the blood to the body after oxygenation through the oxygenator, thereby maintaining the patient's vital signs.

[0003] Before connecting a patient to the ECMO system, the ECMO tube needs to be pre-filled with saline or other pre-filling fluid and the gas needs to be expelled to prevent the gas from entering the human body and causing gas embolism. However, the existing pre-filling technology still cannot effectively solve the problem of bubbles entering the ECMO tube. Summary of the invention

[0004] Based on this, it is necessary to provide a pre-filled bag for ECMO to address the above problems, including a bag body, the bag body having an inner cavity, the bag body being provided with a liquid inlet, an exhaust port, an outflow port and a reflux port which are communicated with the inner cavity, the exhaust port being covered with a waterproof breathable membrane, a filter being provided in the inner cavity, and the filter and the reflux port forming an independent chamber.

[0005] In one embodiment, the pore size of the filter is between 40 μm and 60 μm.

[0006] In one embodiment, the area of ​​the waterproof breathable membrane is greater than or equal to 10 cm×10 cm.

[0007] In one of the embodiments, the liquid inlet is connected to a liquid inlet assembly, and the liquid inlet assembly includes at least two liquid inlet channels, and each of the liquid inlet channels is connected to a corresponding pre-filling tube.

[0008] In one embodiment, the liquid inlet assembly includes a main pipeline and at least two branch pipelines communicating with the main pipeline, each of the branch pipelines is connected to a corresponding pre-filling tube, and each of the branch pipelines and the main pipeline forms a liquid inlet channel.

[0009] In one embodiment, the main pipeline is connected to three branch pipelines.

[0010] In one embodiment, the inner diameter of the pre-filling tube is between 5 mm and 10 mm.

[0011] In one embodiment, the pre-filling tube is connected to a pre-filling liquid bag.

[0012] In one embodiment, the prefilled liquid bag comprises a saline bag.

[0013] In one embodiment, the outflow port and the return port are both connected with quick-connect connectors.

[0014] The ECMO prefill bag provided in the embodiment of the present application is provided with a liquid inlet, an exhaust port, an outflow port and a reflux port which are connected to the inner cavity, wherein the exhaust port is covered with a waterproof breathable membrane, and a filter is provided in the inner cavity of the bag body, and the filter and the reflux port form an independent chamber. Thus, when liquid enters the inner cavity of the bag body, the air in the liquid can be quickly discharged through the waterproof breathable membrane, and at the same time, when the refluxed liquid enters the inner cavity of the bag body through the reflux port, it first enters the independent chamber formed by the filter and the reflux port, and then flows out through the filter, thereby effectively intercepting the gas entrained in the liquid when the liquid refluxes, and through the above-mentioned ECMO prefill bag, bubbles can be effectively discharged to prevent bubbles from entering the ECMO pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an ECMO pre-filled bag provided in one embodiment of the present application.

[0016] Description of reference numerals:

[0017] 100, bag body; 110, inner cavity; 120, liquid inlet; 130, exhaust port; 131, waterproof breathable membrane; 140, outflow port; 150, reflux port; 160, filter; 170, liquid inlet assembly; 171, liquid inlet channel; 172, pre-filling tube; 173, main line; 174, branch line; 180, quick-connect connector. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Extracorporeal membrane oxygenation (ECMO) is mainly used to provide continuous extracorporeal respiration and circulation to patients with severe cardiopulmonary failure to maintain their lives. The ECMO system consists of pipes, oxygenators, blood pumps, monitoring systems, etc. It draws venous blood out of the body, drives the blood to circulate through the blood pump, and returns the blood to the body after oxygenation through the oxygenator, thereby maintaining the patient's vital signs.

[0023] Before connecting a patient to the ECMO system, the ECMO tube needs to be pre-filled with saline or other pre-filling fluid and the gas needs to be expelled to prevent the gas from entering the human body and causing gas embolism. However, the existing pre-filling technology still cannot effectively solve the problem of bubbles entering the ECMO tube.

[0024] To solve the above problems, refer to Figure 1The present application provides a prefilled bag for ECMO, including a bag body 100, the bag body 100 having an inner cavity 110, the bag body 100 is provided with a liquid inlet 120, an exhaust port 130, an outflow port 140 and a reflux port 150 which are communicated with the inner cavity 110, the exhaust port 130 is covered with a waterproof breathable membrane 131, a filter screen 160 is provided in the inner cavity 110, and the filter screen 160 and the reflux port 150 form an independent chamber.

[0025] The bag body 100 may have a top and a bottom relative to each other, the liquid inlet 120 and the exhaust port 130 may be arranged at the top of the bag body 100, and the outflow port 140 and the reflux port 150 may be arranged at the bottom of the bag body 100. When the pre-filled bag is used, the pre-filled liquid may enter the inner cavity 110 of the bag body 100 through the liquid inlet 120 at the top of the bag body 100, and the pre-filled liquid may flow out through the outflow port 140 at the bottom of the bag body 100 under the action of gravity, and at the same time, the gas in the pre-filled liquid may move toward the top and be discharged through the waterproof breathable membrane 131 at the top exhaust port 130, thereby enabling the gas in the bag body 100 to be quickly discharged. Furthermore, when the refluxed liquid enters the inner cavity 110 of the bag body 100 through the reflux port 150, it may first enter the independent chamber surrounded by the filter screen 160 and the reflux port 150, and then flow out through the filter screen 160, thereby effectively intercepting the gas entrained in the liquid when the liquid refluxes. Through the above-mentioned ECMO pre-filled bag, the gas can be double-filtered through the waterproof breathable membrane 131 and the filter 160, which can effectively and quickly discharge the bubbles and prevent the bubbles from entering the ECMO pipeline.

[0026] In one embodiment, the pore size of the filter 160 is between 40 μm and 60 μm. For example, the pore size of the filter 160 can be set to 40 μm, 45 μm, 50 μm, 55 μm, or 60 μm, etc., and can be set according to actual needs.

[0027] In this embodiment, the total area of ​​the filter 160 can be set to 15 cm×15 cm. The filter 160 can be set to a bent shape, an arc shape, or an irregular shape, as long as it can filter the gas of the liquid entering through the reflux port 150.

[0028] In one embodiment, the area of ​​the waterproof breathable membrane 131 is greater than or equal to 10 cm×10 cm. The area of ​​the waterproof breathable membrane 131 is set to be greater than or equal to 10 cm×10 cm, thereby improving the gas filtering efficiency. The waterproof breathable membrane 131 can be set on the side of the exhaust port 130 facing the inner cavity 110 of the bag body 100, and attached to the inner wall of the inner cavity 110.

[0029] In one embodiment, the liquid inlet 120 is connected to a liquid inlet assembly 170 , and the liquid inlet assembly 170 includes at least two liquid inlet channels 171 , and each of the liquid inlet channels 171 is connected to a corresponding pre-filling tube 172 .

[0030] In conventional technology, the liquid inlet 120 is often connected to only one liquid inlet channel 171, and the pre-filling speed is slow. In this embodiment, the liquid inlet assembly 170 includes at least two liquid inlet channels 171, each of which is connected to a corresponding pre-filling tube 172, and each pre-filling tube 172 can be fed with pre-filling liquid, that is, the pre-filling liquid can enter the inner cavity 110 through at least two liquid inlet channels 171, which effectively improves the pre-filling speed.

[0031] When the amount of pre-filled liquid flowing into the inner cavity 110 increases at the same time, there are certain requirements for the exhaust efficiency. In this embodiment, a waterproof and breathable membrane 131 with an area of ​​not less than 10cm×10cm is provided at the exhaust port 130. Therefore, when the amount of pre-filled liquid entering the inner cavity 110 increases, the gas in the inner cavity 110 can also be quickly discharged.

[0032] In one embodiment, the liquid inlet component 170 includes a main line 173 and at least two branch lines 174 communicating with the main line 173 , each of the branch lines 174 is connected to a corresponding pre-filling tube 172 , and each of the branch lines 174 and the main line 173 form a liquid inlet channel 171 .

[0033] That is, by configuring the liquid inlet assembly 170 to include a main line 173 and at least two branch lines 174, the effect of multiple liquid inlet channels 171 is achieved. The branch lines 174 are configured in a one-to-one correspondence with the pre-filling tubes 172. In practical applications, the pre-filling liquid can enter the branch lines 174 through each pre-filling tube 172, then enter the main line 173, and finally enter the inner cavity 110 of the bag body 100 through the liquid inlet 120.

[0034] Among them, the main pipeline 173, each branch pipeline 174 and each pre-filling tube 172 are all arranged perpendicular to the liquid inlet 120, so that the pre-filling liquid can enter each liquid inlet channel 171 under its own gravity and flow into the inner cavity 110 of the bag body 100.

[0035] In one embodiment, the main pipeline 173 is connected to three branch pipelines 174. That is, three liquid inlet channels 171 are provided, and the pre-filled liquid can enter the inner cavity 110 of the bag body 100 through the three liquid inlet channels 171 at the same time. This can avoid the situation where too many liquid inlet channels 171 lead to too much pre-filled liquid entering the inner cavity 110 of the bag body 100, and the gas cannot be discharged in time. At the same time, it can avoid the problem that too few liquid inlet channels 171 lead to too difficult entry speed of the pre-filled liquid and too low pre-filling efficiency. Providing three liquid inlet channels 171 can not only improve the efficiency of pre-flushing liquid injection, but also adapt to the exhaust efficiency of the waterproof breathable membrane 131, effectively improving the pre-filling effect.

[0036] In one embodiment, the inner diameter of the pre-filling tube 172 is between 5 mm and 10 mm, and can be specifically 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm, etc., and can be set according to actual needs.

[0037] The inner diameter of the main pipeline 173 is larger than that of the branch pipeline 174 , and the inner diameter of the branch pipeline 174 is larger than that of the pre-filling tube 172 . The pre-filling tube 172 is inserted into the branch pipeline 174 .

[0038] In one embodiment, the pre-filling tube 172 is connected to a pre-filling liquid bag. The pre-filling liquid bag may include a physiological saline bag. The pre-filling tube 172 may be a needle-shaped pre-filling tube 172. When in use, the needle-shaped pre-filling tube 172 is inserted into the pre-filling liquid bag, thereby preventing leakage and contamination of the pre-filling liquid.

[0039] In one embodiment, the outflow port 140 and the reflux port 150 are both connected with a quick-connect connector 180. The quick-connect connector 180 can enable the pre-filled bag to be quickly connected and quickly disconnected from the pre-filled tube 172, thereby improving the convenience of use.

[0040] 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.

[0041] 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. A prefilled bag for ECMO, characterized in that: The bag comprises a bag body having an inner cavity. The bag body is provided with a liquid inlet, an exhaust port, an outflow port and a reflux port which are connected with the inner cavity. The exhaust port is covered with a waterproof breathable membrane. A filter screen is arranged in the inner cavity. The filter screen and the reflux port form an independent chamber.

2. The ECMO prefilled bag according to claim 1, characterized in that: The pore size of the filter is between 40 μm and 60 μm.

3. The ECMO prefilled bag according to claim 1, characterized in that: The area of ​​the waterproof breathable membrane is greater than or equal to 10 cm×10 cm.

4. The ECMO prefill bag according to claim 1, characterized in that: The liquid inlet is connected to a liquid inlet assembly, and the liquid inlet assembly includes at least two liquid inlet channels, and each of the liquid inlet channels is connected to a corresponding pre-filling tube.

5. The ECMO prefilled bag according to claim 4, characterized in that: The liquid inlet assembly includes a main pipeline and at least two branch pipelines communicating with the main pipeline, each of the branch pipelines is connected to a corresponding pre-filling tube, and each of the branch pipelines and the main pipeline forms a liquid inlet channel.

6. The ECMO prefill bag according to claim 5, characterized in that: The main pipeline is connected to the three branch pipelines.

7. The ECMO prefill bag according to claim 5, characterized in that: The inner diameter of the pre-filling tube is between 5 mm and 10 mm.

8. The ECMO prefill bag according to claim 5, characterized in that: The pre-filling tube is connected with a pre-filling liquid bag.

9. The ECMO prefill bag according to claim 8, characterized in that: The pre-filled liquid bag comprises a physiological saline bag.

10. The ECMO prefill bag according to claim 1, characterized in that: The outflow port and the reflux port are both connected with quick-connect connectors.

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