Self-adaptive suction system and method based on lumen state recognition

Abstract

The invention discloses a self-adaptive aspiration system and method based on lumen state recognition, and relates to the field of thrombus aspiration, and the system comprises an air pressure sensor and an aspiration controller. The air pressure sensor is arranged in the suction catheter and used for collecting the air pressure value of the suction catheter in real time when the catheter cavity is sucked. The suction controller is connected with the air pressure sensor and the suction part and used for recognizing the state of the thrombus in the lumen according to the air pressure value of the suction catheter and adjusting the running state of the suction part according to the state of the thrombus in the lumen so that the thrombus in the lumen can be sucked through the suction catheter. The thrombus in the lumen can be sucked in a self-adaptive mode according to the state of the thrombus in the lumen, the thrombus suction efficiency is improved, the problem that when pure blood exists in the lumen, continuous suction causes a large amount of blood loss is avoided, and the thrombus suction safety is improved.

Description

Technical Field

[0001] The present application relates to the field of thrombus aspiration, and in particular to an adaptive aspiration system and method based on lumen state recognition. Background Art

[0002] When clearing the lumen, doctors usually manually control the opening and closing of the valve to aspirate the thrombus. Since the colors of blood and thrombus are similar, it is difficult for doctors to visually identify normal blood and blood with thrombus in the lumen, which may lead to lumen blockage or blood mixed with a large amount of thrombus in the lumen. It may take a long time to determine that the lumen is blocked, and the aspiration efficiency is very low. When the patient's lumen is filled with pure blood, negative pressure may still be used for continuous aspiration, causing the patient to lose a lot of blood. Summary of the Invention

[0003] The purpose of this application is to provide an adaptive aspiration system and method based on lumen state recognition, which can improve the efficiency and safety of thrombus aspiration.

[0004] To achieve the above objectives, this application provides the following solutions:

[0005] In a first aspect, the present application provides an adaptive suction system based on lumen state recognition, comprising:

[0006] An air pressure sensor is disposed in the suction catheter and is used to collect the air pressure value of the suction catheter in real time when suction is performed on the lumen; one end of the suction catheter is located in the lumen, and the other end extends to the outside of the lumen and is connected to the suction component;

[0007] The suction controller is connected to the air pressure sensor and the suction component respectively, and is used to identify the thrombus status in the lumen according to the air pressure value of the suction catheter, and adjust the operating state of the suction component according to the thrombus status in the lumen, so as to suction the thrombus in the lumen through the suction catheter; the thrombus status includes pure blood, mixed thrombus in blood and thrombus blockage.

[0008] Optionally, a switch handle is provided between the suction conduit and the suction component; and the air pressure sensor is provided at the switch handle.

[0009] Optionally, the suction controller comprises:

[0010] a data processing module connected to the air pressure sensor and configured to identify the state of the thrombus in the lumen according to the air pressure value of the aspiration catheter;

[0011] The control module is connected to the data processing module and the suction component respectively, and is used to adjust the operating state of the suction component according to the state of the thrombus in the lumen, so as to suction the thrombus in the lumen through the suction catheter.

[0012] Optionally, the data processing module is specifically used to: determine the size relationship between the air pressure value of the suction catheter and the first set air pressure threshold and the second set air pressure threshold; if the air pressure value of the suction catheter is greater than the first set air pressure threshold, the thrombus state in the lumen is thrombus blockage; if the air pressure value of the suction catheter is less than or equal to the first set air pressure threshold, and greater than the second set air pressure threshold, the thrombus state in the lumen is mixed thrombus in the blood; if the air pressure value of the suction catheter is less than the second set air pressure threshold, the thrombus state in the lumen is pure blood; wherein, the first set air pressure threshold is greater than the second set air pressure threshold.

[0013] Optionally, the data processing module includes:

[0014] a first air pressure acquisition unit, connected to the air pressure sensor, for acquiring an air pressure value of the suction conduit when the suction component is closed, to obtain a first air pressure value;

[0015] a second air pressure acquisition unit, connected to the air pressure sensor, for acquiring an air pressure value of the suction conduit after the suction component is opened for a set time, to obtain a second air pressure value;

[0016] a straight line drawing unit, connected to the first air pressure acquisition unit and the second air pressure acquisition unit, respectively, for drawing a straight line showing the change of air pressure over time according to the first air pressure value and the second air pressure value;

[0017] The state determination unit is connected to the line drawing unit and is used to determine the state of the thrombus in the lumen according to the slope of the line of the air pressure change over time.

[0018] Optionally, the state determination unit is specifically used to: determine the relationship between the slope of the straight line of the air pressure change over time and the first set slope threshold and the second set slope threshold; if the slope of the straight line of the air pressure change over time is greater than the first set slope threshold, the state in the lumen is thrombus blockage; if the slope of the straight line of the air pressure change over time is less than or equal to the first set slope threshold, and greater than the second set slope threshold, the thrombus state in the lumen is mixed thrombus in the blood; if the slope of the straight line of the air pressure change over time is less than or equal to the second set slope threshold, the thrombus state in the lumen is pure blood; wherein, the first set slope threshold is greater than the second set slope threshold.

[0019] In a second aspect, the present application provides an adaptive suction method based on lumen state recognition, comprising:

[0020] When the lumen is being aspirated, the air pressure value of the aspiration catheter is collected in real time; one end of the aspiration catheter is located in the lumen, and the other end extends to the outside of the lumen and is connected to the aspiration component;

[0021] Identifying the thrombus status in the lumen according to the air pressure value of the aspiration catheter; the thrombus status includes pure blood, mixed thrombus in blood, and thrombus blockage;

[0022] The operating state of the suction component is adjusted according to the state of the thrombus in the lumen, so as to suction the thrombus in the lumen through the suction catheter.

[0023] Optionally, identifying the thrombus status in the lumen according to the air pressure value of the aspiration catheter specifically includes:

[0024] Determining a magnitude relationship between the air pressure value of the suction catheter and a first set air pressure threshold and a second set air pressure threshold; the first set air pressure threshold is greater than the second set air pressure threshold;

[0025] If the air pressure value of the suction catheter is greater than the first set air pressure threshold, the thrombus state in the lumen is thrombus blockage;

[0026] If the air pressure value of the aspiration catheter is less than or equal to the first set air pressure threshold and greater than the second set air pressure threshold, the thrombus state in the lumen is mixed thrombus in the blood;

[0027] If the air pressure value of the suction catheter is less than the second set air pressure threshold, the state of the thrombus in the lumen is pure blood.

[0028] Optionally, identifying the thrombus status in the lumen according to the air pressure value of the aspiration catheter specifically includes:

[0029] Acquiring an air pressure value of the suction conduit when the suction component is closed to obtain a first air pressure value;

[0030] Acquiring an air pressure value of the suction conduit after the suction component is opened for a set time to obtain a second air pressure value;

[0031] Draw a straight line showing the change of air pressure over time based on the first air pressure value and the second air pressure value;

[0032] The state of the thrombus in the lumen is determined according to the slope of the straight line showing the change of air pressure over time.

[0033] Optionally, determining the state of the thrombus in the lumen according to the slope of the straight line showing the change of air pressure over time specifically includes:

[0034] Determining a relationship between a slope of a line showing changes in air pressure over time and a first set slope threshold and a second set slope threshold; the first set slope threshold being greater than the second set slope threshold;

[0035] If the slope of the straight line showing the change of air pressure over time is greater than the first set slope threshold, the state of the lumen is thrombus blockage;

[0036] If the slope of the straight line showing the change of air pressure over time is less than or equal to the first set slope threshold and greater than the second set slope threshold, the thrombus state in the lumen is mixed thrombus in the blood;

[0037] If the slope of the straight line showing the change of air pressure with time is less than or equal to the second set slope threshold, the state of the thrombus in the lumen is pure blood.

[0038] According to the specific embodiments provided in this application, this application has the following technical effects:

[0039] The present application provides an adaptive suction system and method based on lumen state recognition, which collects the air pressure value of the suction catheter in real time, identifies the thrombus state in the lumen based on the air pressure value, and adjusts the operating state of the suction component according to the thrombus state in the lumen. The thrombus in the lumen can be adaptively suctioned according to the thrombus state in the lumen, thereby improving the thrombus suction efficiency and avoiding the problem of large-scale blood loss caused by continuous suction when the lumen is pure blood, thereby improving the safety of thrombus suction. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 A block diagram of an adaptive suction system based on lumen state recognition provided by an embodiment of the present application;

[0042] Figure 2 A schematic structural diagram of an adaptive suction system based on lumen state recognition provided in one embodiment of the present application;

[0043] Figure 3 A flow chart of an adaptive suction method based on lumen state recognition provided in one embodiment of the present application.

[0044] Reference numerals: 101 - air pressure sensor, 102 - suction controller, 103 - suction component, 201 - power adapter, 202 - suction catheter, 203 - switch handle, 204 - Luer connector. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0047] In an exemplary embodiment, Figure 1 and Figure 2 As shown, an adaptive suction system based on lumen state recognition is provided, including an air pressure sensor 101 and a suction controller 102.

[0048] The air pressure sensor 101 is disposed in the suction catheter 202 and is used to collect the air pressure value of the suction catheter 202 in real time when the lumen is suctioned. One end of the suction catheter 202 is located in the lumen, and the other end extends outside the lumen and is connected to the suction component 103.

[0049] The suction controller 102 is connected to the air pressure sensor 101 and the suction component 103, respectively. The suction controller 102 is used to identify the state of the thrombus in the lumen based on the air pressure value of the suction catheter 102, and adjust the operating state of the suction component 103 according to the thrombus state in the lumen to aspirate the thrombus in the lumen through the suction catheter 202. The thrombus state includes pure blood, mixed thrombus in blood, and thrombus blockage.

[0050] In a specific application example, the suction controller 102 may adopt a main control printed circuit board (PCB), which is connected to the power module via the power adapter 201 and is powered by the power module.

[0051] As an optional embodiment, a switch handle 203 is provided between the suction conduit 202 and the suction component 103. The air pressure sensor 101 is provided at the switch handle 203. The suction conduit 202 is connected to the suction component 103 via a Luer connector 204.

[0052] In an exemplary embodiment, the suction controller 102 includes a data processing module and a control module.

[0053] The data processing module is connected to the air pressure sensor 101 , and is used to identify the thrombus status in the lumen according to the air pressure value of the suction catheter 202 .

[0054] The control module is connected to the data processing module and the suction component 103 respectively. The control module is used to adjust the operating state of the suction component 103 according to the state of the thrombus in the lumen, so as to suction the thrombus in the lumen through the suction catheter 202.

[0055] As an optional embodiment, the data processing module is specifically configured to: determine the relationship between the air pressure value of the aspiration catheter 202 and a first set air pressure threshold and a second set air pressure threshold; if the air pressure value of the aspiration catheter 202 is greater than the first set air pressure threshold, the thrombus state in the lumen is thrombus obstruction; if the air pressure value of the aspiration catheter 202 is less than or equal to the first set air pressure threshold and greater than the second set air pressure threshold, the thrombus state in the lumen is mixed thrombus in blood; if the air pressure value of the aspiration catheter 202 is less than the second set air pressure threshold, the thrombus state in the lumen is pure blood. The first set air pressure threshold is greater than the second set air pressure threshold.

[0056] As another optional implementation, the data processing module includes: a first air pressure acquisition unit, a second air pressure acquisition unit, a straight line drawing unit, and a state determination unit.

[0057] The first air pressure acquisition unit is connected to the air pressure sensor 101 and is used to acquire the air pressure value of the suction conduit 202 when the suction component 103 is closed, so as to obtain a first air pressure value.

[0058] The second air pressure acquisition unit is connected to the air pressure sensor 101 and is used to acquire the air pressure value of the suction conduit 202 after the suction component 103 is opened for a set time, thereby obtaining a second air pressure value.

[0059] The straight line drawing unit is connected to the first air pressure acquisition unit and the second air pressure acquisition unit respectively, and is used to draw a straight line showing the change of air pressure over time according to the first air pressure value and the second air pressure value.

[0060] The state determination unit is connected to the line drawing unit, and is used to determine the state of the thrombus in the lumen according to the slope of the line of the air pressure change over time.

[0061] Specifically, the state determination unit is configured to: determine the relationship between the slope of a line showing changes in air pressure over time and a first set slope threshold and a second set slope threshold; if the slope of the line showing changes in air pressure over time is greater than the first set slope threshold, the state within the lumen is thrombus obstruction; if the slope of the line showing changes in air pressure over time is less than or equal to the first set slope threshold and greater than the second set slope threshold, the state of the thrombus within the lumen is mixed thrombus in blood; and if the slope of the line showing changes in air pressure over time is less than or equal to the second set slope threshold, the state of the thrombus within the lumen is pure blood. The first set slope threshold is greater than the second set slope threshold.

[0062] In addition, the suction controller 102 also includes a data storage module, which is used to store the real-time air pressure value, the first set air pressure threshold, the second set air pressure threshold, the first set slope threshold and the second set slope threshold during the suction process of the tubular cavity.

[0063] The present application only requires the installation of a single air pressure sensor 101 and the use of relevant numerical comparisons to adaptively aspirate the clot within the lumen based on the clot's state within the lumen. This improves clot aspiration efficiency and avoids the problem of excessive blood loss caused by continuous aspiration when the lumen is pure blood, thereby improving the safety of clot aspiration. Testing has shown that current aspiration extension tubes ranging from 8F to 12F can meet the requirements of the present application's adaptive aspiration method.

[0064] Based on the same inventive concept, the present application also provides a method for applying the aforementioned adaptive suction system based on lumen state recognition. The solution provided by this method is similar to the solution described in the aforementioned system. Therefore, the specific limitations of one or more embodiments of the adaptive suction method based on lumen state recognition provided below can be found in the above-mentioned limitations of the adaptive suction system based on lumen state recognition, and will not be repeated here.

[0065] In an exemplary embodiment, Figure 3 As shown, an adaptive suction method based on lumen state recognition is provided, including the following steps 301 to 303.

[0066] Step 301: When the lumen is being aspirated, the air pressure value of the aspiration catheter is collected in real time. One end of the aspiration catheter is located in the lumen, and the other end extends to the outside of the lumen and is connected to the aspiration component.

[0067] Specifically, an air pressure sensor is provided at the switch handle of the suction catheter to detect the air pressure value of the suction catheter in real time.

[0068] In a specific application example, the suction component includes a negative pressure suction host and a waste liquid collection device. A vacuum pump is provided in the negative pressure suction host, and the vacuum pump is connected to the suction catheter. The waste liquid collection device is provided at the suction end of the negative pressure suction host. By controlling the operating state of the vacuum pump in the negative pressure suction host, suction of the lumen is achieved.

[0069] Step 302: Identify the thrombus status in the lumen according to the air pressure value of the suction catheter. The thrombus status includes pure blood, mixed thrombus in blood, and thrombus blockage.

[0070] In a specific application example, the relationship between the air pressure value of the suction catheter and a first set air pressure threshold and a second set air pressure threshold is determined; if the air pressure value of the suction catheter is greater than the first set air pressure threshold, the thrombus state in the lumen is thrombus obstruction; if the air pressure value of the suction catheter is less than or equal to the first set air pressure threshold and greater than the second set air pressure threshold, the thrombus state in the lumen is mixed thrombus in blood; if the air pressure value of the suction catheter is less than the second set air pressure threshold, the thrombus state in the lumen is pure blood. The first set air pressure threshold is greater than the second set air pressure threshold.

[0071] In another specific application example, the air pressure in the suction catheter is obtained when the suction component is closed to obtain a first air pressure value. The air pressure in the suction catheter is obtained after the suction component is opened for a set time to obtain a second air pressure value. Based on the first and second air pressure values, a line is plotted showing the change in air pressure over time. The state of the thrombus in the lumen is determined based on the slope of the line showing the change in air pressure over time.

[0072] The set time can be 100 milliseconds. In this example, the air pressure at the switch handle is collected in different time periods: once when the suction component is closed, and again 100 milliseconds after the suction component is opened. Based on the time and air pressure values ​​of the two collections, a straight line is drawn showing the change in air pressure over time, and the suction slope is calculated to identify the presence of a thrombus in the lumen.

[0073] Specifically, the relationship between the slope of the line showing the change in air pressure over time and a first set slope threshold and a second set slope threshold is determined; if the slope of the line showing the change in air pressure over time is greater than the first set slope threshold, the state within the lumen is thrombus obstruction; if the slope of the line showing the change in air pressure over time is less than or equal to the first set slope threshold and greater than the second set slope threshold, the state of the thrombus within the lumen is mixed thrombus in blood; if the slope of the line showing the change in air pressure over time is less than or equal to the second set slope threshold, the state of the thrombus within the lumen is pure blood. The first set slope threshold is greater than the second set slope threshold.

[0074] The first set air pressure threshold, the second set air pressure threshold, the first set slope threshold, and the second set slope threshold are all reasonable values ​​determined in advance through a large number of experiments.

[0075] Step 303: Adjust the operating state of the suction component according to the state of the thrombus in the lumen, so as to suction the thrombus in the lumen through the suction catheter.

[0076] In a specific application example, the operating state of the suction component is adjusted by a solenoid valve, specifically by controlling the opening and closing time of the solenoid valve in each cycle to achieve the adjustment of the operating state of the suction component.

[0077] Specifically, when the thrombus in the lumen is pure blood, the solenoid valve is open for 200 to 2000 milliseconds during the next cycle and remains closed the rest of the time. In this state, blood loss needs to be minimized, so the solenoid valve is opened much shorter than it is closed. The preferred ratio of open to closed time is 0.2 to 0.5.

[0078] When the thrombus in the lumen is mixed with blood, the solenoid valve is closed for 500 to 2000 milliseconds during the next cycle, remaining open for the remainder of the time. In this state, due to the presence of a large amount of thrombus in the blood, a large amount of suction is required to quickly reperfuse the embolic vessel. Therefore, the solenoid valve's open and closed times are nearly equal, or the open time is greater than the closed time. A preferred ratio of open to closed time is 1 to 5.

[0079] When the thrombus in the lumen is blocked, the solenoid valve is kept open for a much longer period than it is closed during the next cycle, or the solenoid valve remains open until the thrombus in the lumen changes, and then switches to the other two control modes. Preferably, the solenoid valve is kept open for a period greater than or equal to 2000 milliseconds.

[0080] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0081] In this application, all actions to obtain signals, information or data are carried out in compliance with the relevant data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0082] The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may include, but are not limited to, general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic units, data processing logic units based on quantum computing, and the like.

[0083] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0084] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core concept of this application. At the same time, for those skilled in the art, based on the concept of this application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. An adaptive suction system based on lumen state recognition, characterized in that: The adaptive suction system based on lumen state recognition includes: An air pressure sensor is disposed in the suction catheter and is used to collect the air pressure value of the suction catheter in real time when suction is performed on the lumen; one end of the suction catheter is located in the lumen, and the other end extends to the outside of the lumen and is connected to the suction component; The suction controller is connected to the air pressure sensor and the suction component respectively, and is used to identify the thrombus status in the lumen according to the air pressure value of the suction catheter, and adjust the operating state of the suction component according to the thrombus status in the lumen, so as to suction the thrombus in the lumen through the suction catheter; the thrombus status includes pure blood, mixed thrombus in blood and thrombus blockage.

2. The adaptive suction system based on lumen state recognition according to claim 1, characterized in that: A switch handle is provided between the suction conduit and the suction component; and the air pressure sensor is provided at the switch handle.

3. The adaptive suction system based on lumen state recognition according to claim 1, characterized in that: The suction controller comprises: a data processing module connected to the air pressure sensor and configured to identify the state of the thrombus in the lumen according to the air pressure value of the aspiration catheter; The control module is connected to the data processing module and the suction component respectively, and is used to adjust the operating state of the suction component according to the state of the thrombus in the lumen, so as to suction the thrombus in the lumen through the suction catheter.

4. The adaptive suction system based on lumen state recognition according to claim 3, characterized in that: The data processing module is specifically used to: determine the size relationship between the air pressure value of the suction catheter and the first set air pressure threshold and the second set air pressure threshold; if the air pressure value of the suction catheter is greater than the first set air pressure threshold, the thrombus state in the lumen is thrombus blockage; if the air pressure value of the suction catheter is less than or equal to the first set air pressure threshold and greater than the second set air pressure threshold, the thrombus state in the lumen is mixed thrombus in the blood; if the air pressure value of the suction catheter is less than the second set air pressure threshold, the thrombus state in the lumen is pure blood; wherein, the first set air pressure threshold is greater than the second set air pressure threshold.

5. The adaptive suction system based on lumen state recognition according to claim 3, characterized in that: The data processing module includes: a first air pressure acquisition unit, connected to the air pressure sensor, for acquiring an air pressure value of the suction conduit when the suction component is closed, to obtain a first air pressure value; a second air pressure acquisition unit, connected to the air pressure sensor, for acquiring an air pressure value of the suction conduit after the suction component is opened for a set time, to obtain a second air pressure value; a straight line drawing unit, connected to the first air pressure acquisition unit and the second air pressure acquisition unit, respectively, for drawing a straight line showing the change of air pressure over time according to the first air pressure value and the second air pressure value; The state determination unit is connected to the line drawing unit and is used to determine the state of the thrombus in the lumen according to the slope of the line of the air pressure change over time.

6. The adaptive suction system based on lumen state recognition according to claim 5, characterized in that: The state determination unit is specifically used to: determine the relationship between the slope of the straight line of the air pressure change over time and the first set slope threshold and the second set slope threshold; if the slope of the straight line of the air pressure change over time is greater than the first set slope threshold, the state in the lumen is thrombus blockage; if the slope of the straight line of the air pressure change over time is less than or equal to the first set slope threshold, and greater than the second set slope threshold, the thrombus state in the lumen is mixed thrombus in the blood; if the slope of the straight line of the air pressure change over time is less than or equal to the second set slope threshold, the thrombus state in the lumen is pure blood; wherein, the first set slope threshold is greater than the second set slope threshold.

7. An adaptive suction method based on lumen state recognition, characterized in that: The adaptive suction method based on lumen state recognition includes: When the lumen is being aspirated, the air pressure value of the aspiration catheter is collected in real time; one end of the aspiration catheter is located in the lumen, and the other end extends to the outside of the lumen and is connected to the aspiration component; Identifying the thrombus status in the lumen according to the air pressure value of the aspiration catheter; the thrombus status includes pure blood, mixed thrombus in blood, and thrombus blockage; The operating state of the suction component is adjusted according to the state of the thrombus in the lumen, so as to suction the thrombus in the lumen through the suction catheter.

8. The adaptive suction method based on lumen state recognition according to claim 7, characterized in that: Identifying the thrombus status in the lumen according to the air pressure value of the aspiration catheter specifically includes: Determining a magnitude relationship between the air pressure value of the suction catheter and a first set air pressure threshold and a second set air pressure threshold; the first set air pressure threshold is greater than the second set air pressure threshold; If the air pressure value of the suction catheter is greater than the first set air pressure threshold, the thrombus state in the lumen is thrombus blockage; If the air pressure value of the aspiration catheter is less than or equal to the first set air pressure threshold and greater than the second set air pressure threshold, the thrombus state in the lumen is mixed thrombus in the blood; If the air pressure value of the suction catheter is less than the second set air pressure threshold, the state of the thrombus in the lumen is pure blood.

9. The adaptive suction method based on lumen state recognition according to claim 7, characterized in that: Identifying the thrombus status in the lumen according to the air pressure value of the aspiration catheter specifically includes: Acquiring an air pressure value of the suction conduit when the suction component is closed to obtain a first air pressure value; Acquiring an air pressure value of the suction conduit after the suction component is opened for a set time to obtain a second air pressure value; Draw a straight line showing the change of air pressure over time based on the first air pressure value and the second air pressure value; The state of the thrombus in the lumen is determined according to the slope of the straight line showing the change of air pressure with time.

10. The adaptive suction method based on lumen state recognition according to claim 9, characterized in that: Determining the thrombus state in the lumen according to the slope of the line showing the change of air pressure over time specifically includes: Determining a relationship between a slope of a line showing changes in air pressure over time and a first set slope threshold and a second set slope threshold; the first set slope threshold being greater than the second set slope threshold; If the slope of the straight line showing the change of air pressure over time is greater than the first set slope threshold, the state of the lumen is thrombus blockage; If the slope of the straight line showing the change of air pressure over time is less than or equal to the first set slope threshold and greater than the second set slope threshold, the thrombus state in the lumen is mixed thrombus in the blood; If the slope of the straight line showing the change of air pressure with time is less than or equal to the second set slope threshold, the state of the thrombus in the lumen is pure blood.

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