Vascular artificial embolism formation and control system

Abstract

This application relates to a vascular artificial embolism formation and control system. The system includes an embolism pressure control component, a gas pipeline, a liquid level adjustment component, and a liquid pipeline. The embolism pressure control component controls the gas pressure and volume of the artificial embolism; the liquid level adjustment component includes a liquid extraction control element and a liquid collection container, used to adjust the blood level in the blood vessel after the artificial embolism at the required pressure is formed, thereby controlling the position of the artificial embolism within the blood vessel. This control system can precisely control the gas pressure, gas volume, and position of the artificial embolism in the blood vessel, overcoming the problem of blood backflow during the retrograde movement of the artificial embolism, and significantly reducing the risk of the artificial embolism entering the circulatory system through collateral circulation, effectively preventing the possibility of gas embolism causing harm to other parts of the body; it also reduces the consumption of artificial embolism gas and the loss of blood from the patient during the procedure.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a system for the formation and control of artificial air embolism in blood vessels. Background Technology

[0002] Portal vein thrombosis (PVTh) refers to a thrombus that occurs in the main portal vein, superior mesenteric vein, inferior mesenteric vein, or splenic vein. It is mostly secondary to coagulation abnormalities and portal vein stasis caused by chronic liver disease and tumors. The presence of PVTh can lead to narrowing or obstruction of the portal vein, increasing resistance to blood flow to the liver and thus affecting its blood supply. In liver transplantation complicated by PVTh, if the PVTh is not properly cleared in a timely manner, the transplanted liver may not receive sufficient blood supply, severely impacting the patient's recovery and prognosis.

[0003] In related technologies, artificial gas embolism (i.e., artificial gas embolism) is created at the site of a thrombus in the portal vein to simultaneously block blood flow in multiple branches of the portal vein system, eliminating the need for complex and time-consuming surgical procedures to free and block these deeply embedded vessels. This allows for direct optical visualization of the vessel wall and thrombectomy. However, these technologies cannot accurately control the size (gas volume) and location of the artificial gas embolism within the vessel, which can easily cause blood backflow, leading to congestion and blockage near the mesentery. Furthermore, the artificial gas embolism may even enter the circulatory system through collateral vessels, posing a risk of coronary gas embolism or pulmonary embolism. In addition, because these technologies cannot accurately control the gas volume of the artificial gas embolism, there is a risk that excessive gas from the embolism may enter the circulatory system through dissolution, diffusion, or misoperation. Summary of the Invention

[0004] Therefore, it is necessary to provide a vascular artificial embolism formation and control system to address the problems of existing technologies being unable to accurately control the amount and location of gas in artificial emboli, and the risk of excessive embolism gas entering the blood circulation system.

[0005] A vascular artificial embolism formation and control system, comprising:

[0006] The ventilator pressure control component is used to control the air pressure and gas volume of the artificial ventilator.

[0007] A gas pipeline, wherein the inlet end of the gas pipeline is connected to the output end of the embolism pressure control component, and the outlet end of the gas pipeline is connected to the blood vessel.

[0008] The liquid level adjustment assembly includes a liquid extraction control component and a liquid collection container, used to adjust the blood level in the blood vessel after the artificial air embolism with the required air pressure is formed in the blood vessel, so as to control the position of the artificial air embolism entering the blood vessel. The interior of the liquid collection container is connected to the gas pipeline.

[0009] A liquid pipeline, wherein the liquid extraction control device is disposed in the liquid pipeline, the inlet end of the liquid pipeline is connected to the blood in the blood vessel, and the outlet end of the liquid pipeline is connected to the inside of the liquid collection container.

[0010] In one embodiment, the embolism pressure control component includes:

[0011] A gas storage container for storing the gas that forms the artificial embolism;

[0012] A first pressure control device is used to extract a required metered amount of gas from the gas storage container and output at least a portion of the metered amount of gas to the gas pipeline and the liquid collection container to form the artificial air embolism with the required gas pressure in the blood vessel.

[0013] In one embodiment, the vent pressure control assembly further includes a syringe, wherein the first pressure control device draws the metered gas from the gas storage container into the syringe, and then outputs at least a portion of the metered gas in the syringe to the gas line and the liquid collection container.

[0014] In one embodiment, the embolism pressure control component further includes a pressure feedback channel connected to the input end of the syringe, wherein the first pressure control device monitors and adjusts the pressure of the metered gas drawn into the syringe through the pressure feedback channel.

[0015] In one embodiment, the embolism pressure control assembly further includes: a first on / off control element, the first on / off control element including a first on / off control element first end, a second on / off control element second end and a third on / off control element third end, the first on / off control element first end being connected to the gas storage container, the second on / off control element second end being connected to the syringe and the gas pressure feedback channel, and the third on / off control element third end being connected to the gas pipeline.

[0016] In one embodiment, the embolism pressure control component includes:

[0017] A gas storage container, connected to the gas pipeline, is used to store a fixed amount of gas required to form the artificial embolism;

[0018] A second pressure control device is used to output at least a portion of the metered gas from the gas storage container to the gas pipeline and the liquid collection container to form the artificial air embolism with the required gas pressure in the blood vessel.

[0019] In one embodiment, the vent pressure control assembly further includes: a sealed container, a gas storage container disposed inside the sealed container, the gas storage container being a flexible gas storage container, the output end of the second pressure control device communicating with the interior of the sealed container, the second pressure control device introducing control gas into the sealed container, causing at least a portion of the metered gas in the gas storage container to be output to the gas pipeline and the liquid collection container.

[0020] In one embodiment, the pressure of the control gas is greater than or equal to the required pressure of the artificial embolism.

[0021] In one embodiment, a second on / off control element is provided on the connecting pipe between the liquid collection container and the gas pipeline. The second on / off control element includes a first end, a second end, and a third end. The first end of the second on / off control element is connected to the gas pipeline, the second end is connected to the interior of the liquid collection container, and the third end is an adjustable end that can be opened and closed.

[0022] In one embodiment, a gas pressure display device is provided on the gas pipeline.

[0023] In one embodiment, the device further includes a connecting sheath and an endoscope, the connecting sheath being sealed to the blood vessel, and the probe end of the endoscope entering the blood vessel through the connecting sheath.

[0024] In one embodiment, the inlet end of the liquid tubing is connected to the blood in the blood vessel via the connecting sheath, or the inlet end of the liquid tubing is connected to the blood in the blood vessel via the channel of the endoscope.

[0025] In one embodiment, the outlet of the gas line is connected to the blood vessel via the connecting sheath.

[0026] In one embodiment, a third on / off control element is provided on the gas pipeline. The third on / off control element includes a first end, a second end, and a third end. The first end is connected to the gas pipeline, the second end is connected to the blood vessel, and the third end is an adjustable end that can be opened and closed.

[0027] The aforementioned vascular artificial embolism formation and control system can precisely control the air pressure and gas volume of the artificial embolism by setting an embolism pressure control component. After the artificial embolism with the required air pressure is formed in the blood vessel, the liquid level adjustment component can appropriately extract blood from the blood vessel to adjust the blood level, causing the artificial embolism to move against the direction of blood flow, thereby precisely controlling the movement position of the artificial embolism.

[0028] By comprehensively controlling the pressure, volume, and location of the artificial embolism through the aforementioned control system, the risk of blood backflow during its movement is significantly reduced, avoiding a series of problems that may be caused by blood backflow (such as tissue congestion and stasis). Furthermore, it overcomes the problem of excessive entry of the artificial embolism into the circulatory system through dissolution and diffusion, effectively preventing the potential for gas embolism to cause harm in other parts of the body. Controlling the volume of gas in the artificial embolism prevents excessive entry of gas into the patient's downstream circulatory system, ensuring surgical safety. It also effectively reduces the consumption of artificial embolism gas (such as medical carbon dioxide) and blood loss during surgery, and the blood in the liquid collection container can be recycled and reused once a certain amount is reached. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an embodiment of the vascular artificial embolism formation and control system of this application.

[0030] Figure 2 This is a schematic diagram of another embodiment of the vascular artificial embolism formation and control system of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Gas embolism pressure control assembly; 2. Gas pipeline; 3. Liquid collection container; 4. Liquid pipeline; 5. Gas storage container; 6. First pressure control device; 7. Syringe; 8. Gas pressure feedback channel; 9. First on / off control element; 10. Second pressure control device; 11. Sealed container; 12. Liquid extraction control element; 13. Second on / off control element; 14. Gas pressure display device; 15. Connecting sheath; 16. Endoscope; 17. Third on / off control element; 100. Artificial gas embolism; 200. Blood vessel; 300. Liquid level. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0039] See Figure 1 As shown, an embodiment of this application provides a vascular artificial embolism formation and control system, including: an embolism pressure control component 1, a gas pipeline 2, a liquid level adjustment component, and a liquid pipeline 4. The embolism pressure control component 1 is used to control the gas pressure and gas volume of the artificial embolism 100. The inlet end of the gas pipeline 2 is connected to the output end of the embolism pressure control component 1, and the outlet end of the gas pipeline 2 is connected to the blood vessel 200. The liquid level adjustment component includes a liquid extraction control component 12 and a liquid collection container 3, which is used to adjust the blood level 300 in the blood vessel 200 after the artificial embolism 100 with the required gas pressure is formed in the blood vessel 200, so as to control the position of the artificial embolism 100 entering the blood vessel 200. The interior of the liquid collection container 3 is connected to the gas pipeline 2. The liquid extraction control component 12 is disposed on the liquid pipeline 4. The inlet end of the liquid pipeline 4 is connected to the blood in the blood vessel 200, and the outlet end of the liquid pipeline 4 is connected to the interior of the liquid collection container 3.

[0040] This vascular artificial embolism formation and control system can precisely control the air pressure and gas volume of the artificial embolism 100 by setting the embolism pressure control component 1. After the artificial embolism 100 with the required air pressure is formed in the blood vessel 200, the blood in the blood vessel 200 can be appropriately extracted by the liquid level adjustment component to adjust the blood liquid level 300, so that the artificial embolism 100 moves against the direction of blood flow, thereby precisely controlling the movement position of the artificial embolism 100.

[0041] By comprehensively controlling the air pressure, gas volume, and position of the artificial embolism 100 through the aforementioned control system, the risk of blood backflow during the movement of the artificial embolism 100 is significantly reduced, avoiding a series of problems that may be caused by blood backflow (such as tissue congestion and stasis). It also overcomes the problem of excessive entry of the artificial embolism 100 into the circulatory system through dissolution and diffusion, effectively preventing the possibility of gas embolism causing harm in other parts of the body. By controlling the gas volume of the artificial embolism 100, excessive gas from the embolism is prevented from entering the patient's downstream circulatory system, ensuring the patient's surgical safety. In addition, it effectively reduces the consumption of gas (such as medical carbon dioxide) and blood loss of the artificial embolism 100 during the operation. The blood in the liquid collection container 3 can be recycled and reused after reaching a certain amount.

[0042] The embolism pressure control component 1 is used to control the gas pressure and gas volume of the artificial embolism 100. The embolism pressure control component 1 can regulate and maintain the gas pressure required by the artificial embolism 100 and control the amount of gas entering the blood vessel 200 (circulatory system). The embolism pressure control component 1 has a gas output end, referred to simply as the output end.

[0043] Gas line 2 is used to introduce gas (such as medical carbon dioxide) to form the artificial air embolism 100. Gas line 2 has an inlet and an outlet. The inlet of gas line 2 is connected to the output of the air embolism pressure control component 1, and the outlet of gas line 2 is connected to the blood vessel 200. The gas output from the air embolism pressure control component 1 enters the blood vessel 200 through gas line 2 to form the artificial air embolism 100 at the required pressure. The pressure of the gas output from the air embolism pressure control component 1 is comparable to the normal pressure of the blood vessel to maintain the stability of the artificial air embolism morphology.

[0044] The liquid level adjustment component is used to adjust the blood level 300 in the blood vessel 200 after the artificial embolism 100 with the required air pressure is formed within the blood vessel 200, thereby controlling the position of the artificial embolism 100 within the blood vessel 200. The liquid level adjustment component includes a liquid extraction control element 12 and a liquid collection container 3. The liquid collection container 3 has a certain volume and can be a blood collection sealing bag or a blood collection sealing tube. After the artificial embolism 100 with the required air pressure is formed within the blood vessel 200, the blood level 300 is adjusted by appropriately extracting blood from the blood vessel 200, thereby causing the artificial embolism 100 to move in the opposite direction of blood flow until it reaches the desired position (the position where the thrombus is exposed). The interior of the liquid collection container 3 is connected to the gas pipeline 2 to maintain a relatively constant embolism pressure during the process of blood being extracted from the blood vessel 200 to the liquid collection container 3.

[0045] In order to facilitate blood extraction after the artificial embolism 100 with the required air pressure is formed in the blood vessel 200, it is necessary to ensure that the inside of the liquid collection container 3 is connected to the gas pipeline 2 so that the air pressure inside the liquid collection container 3 is consistent with the air pressure inside the gas pipeline 2, so that the blood can be smoothly transferred to the liquid collection container 3, thereby controlling the movement of the artificial embolism 100.

[0046] See Figure 1 As shown, the liquid extraction control 12 is used to provide the power for blood extraction. In one embodiment, the liquid extraction control 12 employs a peristaltic pump, which can precisely control the blood flow rate to control the amount of blood extracted, thereby controlling the position of the artificial embolism 100 in the blood vessel 200, as long as the artificial embolism 100 can be moved to the thrombus location, reducing excessive blood loss.

[0047] After the artificial embolism 100 with the required air pressure is formed in the blood vessel 200, the liquid extraction control device 12 extracts the blood from the blood vessel 200 and draws the blood into the liquid collection container 3. During this process, the blood level 300 moves in the opposite direction of the blood flow, and the artificial embolism 100 moves in the opposite direction of the blood flow until the artificial embolism 100 reaches the position where the thrombus is exposed, at which point the blood extraction can be stopped.

[0048] A liquid extraction control unit 12 is installed in the liquid pipeline 4, which is used to circulate blood drawn from the blood vessel 200. The liquid pipeline 4 has an inlet end and an outlet end. The inlet end of the liquid pipeline 4 is connected to the blood in the blood vessel 200, and the outlet end of the liquid pipeline 4 is connected to the inside of the liquid collection container 3. The blood drawn from the blood vessel 200 flows into the liquid collection container 3 through the liquid pipeline 4 for blood collection. If necessary, when the blood in the liquid collection container 3 reaches a certain amount, it can be recycled and reused, thus avoiding waste.

[0049] In one embodiment of this application, the air embolism pressure control component 1 includes: a gas storage container 5 and a first pressure control device 6. The gas storage container 5 is used to store gas for forming an artificial air embolism 100, and the first pressure control device 6 is used to extract a required amount of gas from the gas storage container 5 and output at least a portion of the required amount of gas to the gas pipeline 2 and the liquid collection container 3 to form an artificial air embolism 100 with the required pressure in the blood vessel 200.

[0050] See Figure 1 As shown, the embolism pressure control assembly 1 includes a gas storage container 5 and a first pressure control device 6. The gas storage container 5 is used to store the gas forming the artificial embolism 100, and the gas can be medical carbon dioxide. In one embodiment, the gas storage container 5 has a certain volume, and the amount of gas that the gas storage container 5 can store is not limited. For example, the gas storage container 5 can store more gas than the amount required for the artificial embolism 100 for subsequent use.

[0051] In one embodiment, the gas storage container 5 is a flexible gas storage bag, which is well-sealed, durable, lightweight, and has low operating costs.

[0052] The first pressure control device 6 is used to extract a required metered amount of gas from the gas storage container 5 and output at least a portion of the metered amount of gas to the gas line 2 and the liquid collection container 3 to form an artificial embolism 100 with the required gas pressure in the blood vessel 200. The amount of gas required to form the artificial embolism 100 is pre-calculated, and the first pressure control device 6 extracts a metered amount of gas from the gas storage container 5. This metered amount of gas is greater than the amount required for the artificial embolism 100 and is available for use. In actual operation, depending on the actual situation, a portion of the metered gas can be output to the gas line 2 and the liquid collection container 3, or all of the metered gas can be output to the gas line 2 and the liquid collection container 3. This metered gas limit restricts the upper limit (maximum amount of gas) of the artificial embolism 100 (the amount of embolism gas entering the blood vessel), preventing excessive embolism gas from entering the patient's circulatory system and ensuring the patient's surgical safety.

[0053] In one embodiment, the first pressure control device 6 employs a pressure-controlled injection pump, which can precisely control the pressure of the output gas, thereby achieving high-precision control and adjustment of the pressure and volume of the artificial ventilator 100.

[0054] In one embodiment of this application, the vent pressure control assembly 1 further includes a syringe 7, wherein a first pressure control device 6 draws a metered amount of gas from the gas storage container 5 into the syringe 7, and then outputs at least a portion of the metered amount of gas in the syringe 7 to the gas pipeline 2 and the liquid collection container 3.

[0055] The embolism pressure control assembly 1 also includes a syringe 7 for containing gas drawn from the gas storage container 5. During gas extraction, the first pressure control device 6 precisely controls the process to ensure that a fixed amount of gas for forming the artificial embolism 100 is drawn from the gas storage container 5 into the syringe 7. After gas extraction is complete, at least a portion of the fixed amount of gas in the syringe 7 is output to the gas line 2 and the liquid collection container 3, and then delivered to the blood vessel 200.

[0056] In one embodiment of this application, the embolization pressure control component 1 further includes a pressure feedback channel 8, which is connected to the input end of the syringe 7. The first pressure control device 6 monitors and adjusts the pressure of a quantitative gas drawn into the syringe 7 through the pressure feedback channel 8.

[0057] The first pressure control device 6 can monitor and regulate the process of drawing a metered amount of gas from the gas storage container 5 to the syringe 7 in order to control the gas pressure of the metered amount of gas. For example, the gas pressure drawn into the syringe 7 should be close to one standard atmosphere.

[0058] The embolism pressure control component 1 also includes a pressure feedback channel 8. One end of the pressure feedback channel 8 is connected to the input end of the syringe 7, and the other end is connected to the channel of the first pressure control device 6. The first pressure control device 6 monitors and adjusts the pressure of the gas drawn into the syringe 7 through the pressure feedback channel 8.

[0059] In one embodiment of this application, the bladder pressure control component 1 further includes: a first on / off control element 9, which includes a first on / off control element first end, a second on / off control element second end and a third on / off control element third end. The first on / off control element first end is connected to the gas storage container 5, the second on / off control element second end is connected to the syringe 7 and the gas pressure feedback channel 8, and the third on / off control element third end is connected to the gas pipeline 2.

[0060] See Figure 1 As shown, in order to simplify the pipeline structure, the gas vent pressure control component 1 also includes a first on / off control element 9. In one embodiment, the first on / off control element 9 is a three-way valve. The first on / off control element 9 has three ports, namely, the first on / off control element 9 includes a first on / off control element first end, a second on / off control element second end and a third on / off control element third end. The first on / off control element first end is connected to the gas storage container 5, the second on / off control element second end is connected to the syringe 7 and the gas pressure feedback channel 8, and the third on / off control element third end is connected to the gas pipeline 2.

[0061] The first on / off control element 9 can switch between the process of extracting and outputting a fixed amount of gas in the gas vent pressure control component 1, which simplifies the pipeline structure and facilitates control operation.

[0062] In one embodiment of this application, a second on / off control element 13 is provided on the connecting pipe between the liquid collection container 3 and the gas pipeline 2. The second on / off control element 13 includes a first end, a second end, and a third end. The first end is connected to the gas pipeline 2, the second end is connected to the interior of the liquid collection container 3, and the third end is an adjustable end that can be opened and closed.

[0063] See Figure 1 As shown, in order to simplify the pipeline structure, a second on / off control element 13 is provided on the connecting pipeline between the liquid collection container 3 and the gas pipeline 2. In one embodiment, the second on / off control element 13 is a three-way valve. The second on / off control element 13 has three ports, namely, the second on / off control element 13 includes a first end, a second end, and a third end. The first end of the second on / off control element is connected to the gas pipeline 2, the second end is connected to the inside of the liquid collection container 3, and the third end is an adjustable end that can be opened and closed.

[0064] During the operation of the vascular artificial embolism formation and control system, the third end of the second on / off control component is closed. After the system completes its operation, the third end of the second on / off control component can be opened to depressurize the gas in the pipeline and the artificial embolism 100, allowing the embolism 100 to be removed from the blood vessel 200. Furthermore, during the operation of the system, there may be situations where the gas volume in the gas pipeline 2 is insufficient. If necessary, the third end of the second on / off control component can be opened to replenish the gas pipeline 2 with external gas, thus achieving operational flexibility for the control system.

[0065] The second on / off control element 13 can conveniently control the internal air pressure of the liquid collection container 3, making the internal air pressure of the liquid collection container 3 the same as the internal air pressure of the gas pipeline 2. Moreover, when the system is working, the third end of the second on / off control element can be opened to enable the artificial air embolism 100 to be quickly removed from the blood vessel 200, thereby allowing the vascular artificial air embolism formation and control system to be removed from the operating table.

[0066] In one embodiment of this application, a gas pressure display device 14 is provided on the gas pipeline 2.

[0067] See Figure 1 As shown, a pressure display device 14 is installed on the gas pipeline 2. Specifically, the pressure display device 14 is an independent digital pressure display device, which can monitor and display the pressure of the gas in the artificial air vent 100 in real time.

[0068] In one embodiment of this application, the vascular artificial embolism formation and control system of this application further includes a connecting sheath 15 and an endoscope 16. The connecting sheath 15 is sealed to the blood vessel 200, and the probe end of the endoscope 16 enters the blood vessel 200 through the connecting sheath 15.

[0069] See Figure 1 As shown, the vascular artificial embolism formation and control system of this application also includes a connecting sheath 15 and an endoscope 16. The connecting sheath 15 is an interface for vascular intervention, used to airtightly connect the gas line 2, the liquid line 4, and the endoscope 16 to the artificial embolism 100. The connecting sheath 15 is sealed to the blood vessel 200, protecting the blood vessel and facilitating the entry and exit of auxiliary instruments, thus improving the safety and efficiency of the surgical procedure. The probe end of the endoscope 16 can enter the blood vessel 200 through the connecting sheath 15 to perform corresponding surgical operations, such as intraoperative exploration and embolism removal.

[0070] In one embodiment, endoscope 16 is a flexible endoscope.

[0071] In one embodiment of this application, the inlet end of the liquid line 4 is connected to the blood in the blood vessel 200 via the connecting sheath 15, or the inlet end of the liquid line 4 is connected to the blood in the blood vessel 200 via the channel of the endoscope 16.

[0072] See Figure 1 As shown, in one embodiment, the inlet end of the liquid tubing 4 passes through the connecting sheath 15 and communicates with the blood in the blood vessel 200. Alternatively, in other embodiments, the endoscope 16 has a channel, and the inlet end of the liquid tubing 4 can also communicate with the blood in the blood vessel 200 through the channel of the endoscope 16. The method of communication between the inlet end of the liquid tubing 4 and the blood vessel 200 is varied and can be selected as needed.

[0073] In one embodiment of this application, the outlet end of the gas pipeline 2 is connected to the blood vessel 200 via a connecting sheath 15.

[0074] See Figure 1 As shown, in one embodiment, the outlet of the gas line 2 is connected to the blood vessel 200 via a connecting sheath 15. This arrangement of the gas line 2 provides greater operating space and avoids interference with other structures, thus improving the reliability of the system structure.

[0075] In one embodiment of this application, a third on / off control element 17 is provided on the gas pipeline 2. The third on / off control element 17 includes a first end, a second end, and a third end. The first end is connected to the gas pipeline 2, the second end is connected to the blood vessel 200, and the third end is an adjustable end that can be opened and closed.

[0076] See Figure 1 As shown, in order to simplify the pipeline structure, a third on / off control component 17 is provided on the gas pipeline 2. In one embodiment, the third on / off control component 17 is a three-way valve. The third on / off control component 17 has three ports, namely, the third on / off control component 17 includes a first end, a second end, and a third end. The first end is connected to the gas pipeline 2, the second end is connected to the blood vessel 200, and the third end is an adjustable end that can be opened and closed.

[0077] During the operation of the vascular artificial embolism formation and control system, the third end of the third on / off control component is closed. After the system completes its operation, the third end of the third on / off control component can be opened to depressurize the gas in the pipeline and the artificial embolism 100, allowing the embolism 100 to be removed from the blood vessel 200. Furthermore, during the operation of the system, there may be situations where the gas volume in the gas pipeline 2 is insufficient. If necessary, the third end of the third on / off control component can be opened to replenish the gas pipeline 2 with external gas, thus achieving operational flexibility for the control system.

[0078] The on / off control of the gas pipeline 2 can be easily achieved by setting the third on / off control component 17. Moreover, when the system is working, the artificial air embolism 100 can be quickly removed from the blood vessel 200 by opening the third end of the third on / off control component, thereby allowing the vascular artificial air embolism formation and control system to be removed from the operating table.

[0079] The following is in conjunction with the appendix Figure 1 The process of forming and controlling the artificial embolism 100 by the vascular artificial embolism formation and control system of this application is described below:

[0080] Before the vascular artificial embolism formation and control system of this application is put into operation, the structural components of the vascular artificial embolism formation and control system of this application are connected in the required sequence, and the ports of the first on / off control component 9, the second on / off control component 13 and the third on / off control component 17 are kept in the closed cut-off state. Then the connecting sheath 15 is airtightly connected to the vascular cut-off end.

[0081] Step 1: Extract a fixed amount of gas.

[0082] First, the first on / off control element 9 is controlled to open its first and second ends and close its third end, thereby drawing the required amount of gas from the gas storage container 5 into the syringe 7 for the artificial ventilator 100. During this process, the first pressure control device 6 monitors and adjusts the pressure of the gas drawn into the syringe 7 through the pressure feedback channel 8.

[0083] Step 2: Initial pressure setting.

[0084] Controlling the first on / off control element 9 and the second on / off control element 13, closing the first end of the first on / off control element, and opening the second end, third end, first end, and second end of the second on / off control element, allows the metered gas in the syringe 7 to be output into the gas line 2 and the liquid collection container 3. During this process, the first pressure control device 6 can control the output pressure of the metered gas to be set slightly higher than the normal blood vessel pressure (e.g., 1-2 mmHg higher than the normal portal vein pressure).

[0085] Step 3: Artificial air embolism 100 is formed in blood vessel 200.

[0086] Control the third on / off control element 17 to open both the first and second ends of the third on / off control element, and then release the hemostatic clamp at the vascular rupture end. Since the gas pressure in the gas line 2 is slightly higher than the normal pressure in the blood vessel, the gas in the gas line 2 will be injected into the port of the blood vessel 200, forming an artificial air embolism 100. Then, the output pressure of the first pressure control device 6 can be adjusted in real time as needed to maintain a stable equilibrium (relatively static) state at the interface between the air embolism and the blood.

[0087] Step 4: Controlling the size and fluid level of the air embolus in the blood vessel.

[0088] To perform direct optical visualization and surgical procedures on deep blood vessel walls, the artificial embolism 100 must be moved against the direction of blood flow. At this time, the liquid extraction control unit 12 is activated, drawing blood from the blood vessel 200 (blood upstream of the artificial embolism 100 in the direction of blood flow) into the liquid collection container 3. Since the liquid collection container 3 is connected to the artificial embolism 100, some blood in the blood vessel 200 migrates (moves out) along the normal blood flow direction to the liquid collection container 3. The blood level 300 moves against the direction of blood flow, effectively blocking the upstream blood vessel (cutting off blood flow). Simultaneously, the artificial embolism 100 can smoothly move against the direction of blood flow (the blood level 300 moves against the direction of blood flow), gradually revealing the blood vessel wall as it is submerged in blood, until the artificial embolism 100 reaches the thrombus location (the designated location).

[0089] Step 5: Intravascular optical direct vision exploration and thrombectomy.

[0090] Once the artificial embolism 100 reaches the designated location along the blood vessel 200, the blood vessel wall is directly visualized and / or embolectomy is performed using the endoscope 16.

[0091] Step Six: System Evacuation.

[0092] After the vascular exploration and / or thrombectomy is completed, the endoscope 16 and the inlet of the fluid line 4 are withdrawn from the blood vessel, and the severed end of the blood vessel 200 is clamped with hemostatic forceps. Controlling the first on / off control element 9, the second on / off control element 13, and the third on / off control element 17, closing the second end of the first on / off control element, the third end of the first on / off control element, the first end of the second on / off control element, the second end of the second on / off control element, the first end of the third on / off control element, and the second end of the third on / off control element, opening the third end of the second on / off control element and the third end of the third on / off control element, releasing the gas from the gas line 2 and the artificial embolism 100, and loosening the connecting sheath 15, the vascular artificial embolism formation and control system can be safely removed from the operating table.

[0093] See Figure 2 As shown, in another embodiment of the present application, the embolism artificial embolism formation and control system includes an embolism pressure control component 1 comprising: a gas storage container 5 and a second pressure control device 10. The gas storage container 5 is connected to a gas pipeline 2 and is used to store a quantitative amount of gas required to form an artificial embolism 100. The second pressure control device 10 is used to output at least a portion of the quantitative amount of gas in the gas storage container 5 to the gas pipeline 2 and the liquid collection container 3 to form an artificial embolism 100 with the required pressure in the blood vessel 200.

[0094] The embolism pressure control component 1 includes a gas storage container 5 and a second pressure control device 10. The gas storage container 5 stores a fixed amount of gas required to form the artificial embolism 100, which may be medical carbon dioxide. In one embodiment, the gas storage container 5 has a certain volume, and the fixed amount of gas required to form the artificial embolism 100 is pre-stored in the gas storage container 5. For example, the gas storage container 5 can store a gas volume greater than the amount of gas required for the artificial embolism 100, for later use. In actual operation, depending on the actual situation, a portion of the fixed amount of gas can be output to the gas line 2 and the liquid collection container 3, or all of the fixed amount of gas can be output to the gas line 2 and the liquid collection container 3. This fixed amount of gas limits the upper limit (maximum gas volume) of the amount of gas in the artificial embolism 100 (the amount of embolism gas entering the blood vessel), which can prevent excessive embolism gas from entering the patient's circulatory system and ensure the patient's surgical safety.

[0095] The second pressure control device 10 is used to output at least a portion of the metered gas from the gas storage container 5 to the gas pipeline 2 and the liquid collection container 3 to form an artificial air embolism 100 with the required gas pressure in the blood vessel 200. In one embodiment, the second pressure control device 10 employs a gas pressure controller with a built-in pressure control program. The gas pressure controller can precisely control the pressure of the output gas, achieving high-precision control and adjustment of the gas volume of the artificial air embolism 100.

[0096] In one embodiment of this application, the vent pressure control assembly 1 further includes: a sealed container 11, a gas storage container 5 disposed inside the sealed container 11, the gas storage container 5 being a flexible gas storage container, the output end of the second pressure control device 10 being connected to the interior of the sealed container 11, the second pressure control device 10 introducing control gas into the sealed container 11, causing at least a portion of the metered gas in the gas storage container 5 to be output to the gas pipeline 2 and the liquid collection container 3.

[0097] See Figure 2As shown, the vent pressure control assembly 1 further includes a sealed container 11, which has an inner cavity of a certain volume. A gas storage container 5 is disposed within the sealed container 11 and maintains the sealed container 11 in a sealed state. In one embodiment, the gas storage container 5 is a flexible gas storage bag, which has good sealing performance, is durable, lightweight, and has low operating costs.

[0098] The output of the second pressure control device 10 is connected to the inside of the sealed container 11. The second pressure control device 10 can introduce control gas into the sealed container 11 and output at least a portion of the metered gas in the gas storage container 5 to the gas pipeline 2 and the liquid collection container 3.

[0099] In one embodiment of this application, the pressure of the control gas is greater than or equal to the required pressure of the artificial ventilator 100.

[0100] The second pressure control device 10 outputs control gas to the sealed container 11. The pressure of the control gas is greater than or equal to the required pressure of the artificial ventilator 100. The pressure of the control gas is transmitted to the gas storage container 5. The gas storage container 5 is a flexible gas storage container. The gas storage container 5 will deform under pressure, thereby outputting at least a portion of the gas stored inside the gas storage container 5 to the gas pipeline 2 and the liquid collection container 3. In this process, the second pressure control device 10 can adjust the pressure of the control gas to ensure that the gas output to the gas pipeline 2 and the liquid collection container 3 meets the required pressure of the artificial ventilator 100.

[0101] The vascular artificial embolism formation and control system of this application differs from simply increasing the embolism pressure (high pressure differential) to force fluid movement. This application, while maintaining a relative balance between the pressure of the artificial embolism 100 and the normal portal vein pressure (maintaining a low pressure differential), allows the artificial embolism 100 to move smoothly in the opposite direction of blood flow (upstream of the blood vessel) by migrating a portion of the blood along the original forward blood flow direction to the liquid collection container 3. This gradually exposes the blood-submerged vessel wall and thrombus, thereby providing space for optical examination and surgical procedures of vascular wall lesions. Simultaneously, the maximum amount of gas from the artificial embolism 100 that might enter the bloodstream through dissolution and diffusion is limited to prevent excessive gas from entering the patient's circulatory system, ensuring surgical safety and saving on the consumption of medical artificial embolism gas (such as medical carbon dioxide).

[0102] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0103] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A vascular artificial air embolism formation and control system, characterized in that, include: The vent pressure control assembly (1) is used to control the air pressure and gas volume of the artificial vent (100); Gas pipeline (2), the inlet end of the gas pipeline (2) is connected to the output end of the gas embolism pressure control component (1), and the outlet end of the gas pipeline (2) is connected to the blood vessel (200); The liquid level adjustment assembly includes a liquid extraction control (12) and a liquid collection container (3), which is used to adjust the blood level (300) in the blood vessel (200) after the artificial embolism (100) with the required air pressure is formed in the blood vessel (200), so that the artificial embolism (100) moves against the direction of blood flow and controls the position of the artificial embolism (100) entering the blood vessel (200). The interior of the liquid collection container (3) is connected to the gas pipeline (2). Liquid pipeline (4), the liquid extraction control device (12) is disposed on the liquid pipeline (4), the inlet end of the liquid pipeline (4) is connected to the blood in the blood vessel (200), and the outlet end of the liquid pipeline (4) is connected to the inside of the liquid collection container (3).

2. The vascular artificial air embolism formation and control system according to claim 1, characterized in that, The vent pressure control component (1) includes: A gas storage container (5) is used to store the gas that forms the artificial embolism (100); A first pressure control device (6) is used to extract a required amount of gas from the gas storage container (5) and output at least a portion of the required amount of gas to the gas pipeline (2) and the liquid collection container (3) to form the artificial embolism (100) with the required gas pressure in the blood vessel (200).

3. The vascular artificial air embolism formation and control system according to claim 2, characterized in that, The gas embolism pressure control assembly (1) further includes a syringe (7), wherein the first pressure control device (6) draws the metered gas from the gas storage container (5) into the syringe (7), and then outputs at least a portion of the metered gas in the syringe (7) to the gas pipeline (2) and the liquid collection container (3).

4. The vascular artificial air embolism formation and control system according to claim 3, characterized in that, The vent pressure control component (1) further includes a pressure feedback channel (8), which is connected to the input end of the syringe (7). The first pressure control device (6) monitors and adjusts the pressure of the metered gas drawn into the syringe (7) through the pressure feedback channel (8).

5. The vascular artificial air embolism formation and control system according to claim 4, characterized in that, The gas embolism pressure control assembly (1) further includes: a first on / off control element (9), the first on / off control element (9) includes a first on / off control element first end, a first on / off control element second end and a first on / off control element third end, the first on / off control element first end is connected to the gas storage container (5), the first on / off control element second end is connected to the syringe (7) and the gas pressure feedback channel (8), and the first on / off control element third end is connected to the gas pipeline (2).

6. The vascular artificial air embolism formation and control system according to claim 1, characterized in that, The vent pressure control component (1) includes: A gas storage container (5) is connected to the gas pipeline (2), and the gas storage container (5) is used to store a fixed amount of gas required to form the artificial gas embolism (100); A second pressure control device (10) is used to output at least a portion of the metered gas in the gas storage container (5) to the gas pipeline (2) and the liquid collection container (3) to form the artificial gas embolism (100) with the required gas pressure in the blood vessel (200).

7. The vascular artificial air embolism formation and control system according to claim 6, characterized in that, The gas vent pressure control assembly (1) further includes: a sealed container (11), the gas storage container (5) is disposed inside the sealed container (11), the gas storage container (5) is a flexible gas storage container, the output end of the second pressure control device (10) is connected to the inside of the sealed container (11), the second pressure control device (10) introduces control gas into the sealed container (11) and causes at least a portion of the metered gas in the gas storage container (5) to be output to the gas pipeline (2) and the liquid collection container (3).

8. The vascular artificial air embolism formation and control system according to claim 7, characterized in that, The pressure of the control gas is greater than or equal to the pressure required by the artificial vent (100).

9. The vascular artificial air embolism formation and control system according to claim 1, characterized in that, A second on / off control element (13) is provided on the connecting pipe between the liquid collection container (3) and the gas pipeline (2). The second on / off control element (13) includes a first end, a second end, and a third end. The first end of the second on / off control element is connected to the gas pipeline (2), the second end is connected to the inside of the liquid collection container (3), and the third end is an adjustable end that can be opened and closed.

10. The vascular artificial air embolism formation and control system according to claim 1, characterized in that, A pressure display device (14) is installed on the gas pipeline (2).

11. The vascular artificial air embolism formation and control system according to any one of claims 1-10, characterized in that, It also includes a connecting sheath (15) and an endoscope (16), the connecting sheath (15) being sealed to the blood vessel (200), and the probe end of the endoscope (16) entering the blood vessel (200) through the connecting sheath (15).

12. The vascular artificial air embolism formation and control system according to claim 11, characterized in that, The inlet end of the liquid line (4) is connected to the blood in the blood vessel (200) through the connecting sheath (15), or the inlet end of the liquid line (4) is connected to the blood in the blood vessel (200) through the channel of the endoscope (16).

13. The vascular artificial air embolism formation and control system according to claim 12, characterized in that, The outlet of the gas pipeline (2) is connected to the blood vessel (200) through the connecting sheath (15).

14. The vascular artificial air embolism formation and control system according to claim 13, characterized in that, The gas pipeline (2) is provided with a third on / off control device (17), which includes a first end, a second end and a third end. The first end is connected to the gas pipeline (2), the second end is connected to the blood vessel (200), and the third end is an adjustable end that can be opened and closed.

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