Medical pulsed thrombus removal system and method

Abstract

The present application discloses a medical pulsed thrombus removal system and method, which relates to the field of medical devices. The system includes: a catheter monitoring module, which is used to detect the state of the catheter in real time when performing thrombus removal; the state of the catheter is blocked or unblocked; one end of the catheter is located inside the blood vessel, and the other end extends to the outside of the blood vessel and is connected to a suction device; the suction device is used to generate a pulse signal and aspirate the thrombus in the blood vessel through the catheter; a frequency adjustment module, which is respectively connected to the catheter monitoring module and the suction device, and is used to dynamically adjust the frequency of the pulse signal according to the duration of the blockage when the state of the catheter is blocked. The present application monitors the state of the catheter in real time, and when the catheter is blocked, dynamically adjusts the frequency of the pulse signal generated by the suction device, thereby decomposing the thrombus blocked at the catheter port, thereby improving the removal efficiency of the blocked thrombus.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a medical pulsed thrombus removal system and method. Background Art

[0002] During thrombus aspiration, fibrin-rich thrombi are difficult to extract due to their high viscosity and tight adhesion to the vessel wall. Furthermore, the cells, which are predominantly red blood cells, are soft and fragile, and fragments can easily flow distally during the procedure, causing secondary blockage. Thrombus aspiration can cause thrombi to become clogged at the catheter port, necessitating slow extraction, which can easily cause the thrombi to break or dislodge and is inconvenient for the doctor. Summary of the Invention

[0003] The purpose of this application is to provide a medical pulsed thrombus removal system and method, which can improve the efficiency of removing thrombi that block the catheter orifice.

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

[0005] In a first aspect, the present application provides a medical pulsed thrombus removal system, comprising:

[0006] A catheter monitoring module is used to monitor the status of the catheter in real time during thrombus removal; the status of the catheter is whether it is blocked or unblocked; one end of the catheter is located inside the blood vessel, and the other end extends outside the blood vessel and is connected to a suction device; the suction device is used to generate a pulse signal and aspirate the thrombus in the blood vessel through the catheter;

[0007] The frequency adjustment module is connected to the catheter monitoring module and the suction device respectively, and is used to dynamically adjust the frequency of the pulse signal according to the duration of the blockage when the catheter is blocked.

[0008] Optionally, the catheter monitoring module includes:

[0009] The pressure detection submodule is arranged inside the catheter and is used to detect the pressure value inside the catheter in real time when thrombus removal is performed;

[0010] The blockage determination submodule is connected to the pressure detection submodule and is used to determine the state of the catheter according to the pressure value.

[0011] Optionally, the pressure detection submodule is a pressure sensor.

[0012] Optionally, when the pressure value is greater than a set pressure threshold, the state of the catheter is blocked; otherwise, the state of the catheter is not blocked.

[0013] Optionally, the frequency adjustment module is further configured to control the frequency of the pulse signal to maintain a set frequency value when the catheter is in an unblocked state.

[0014] Optionally, the frequency adjustment module includes:

[0015] A duration judgment submodule, connected to the catheter monitoring module, is used to judge whether the duration of the blockage is greater than a set duration threshold;

[0016] The frequency adjustment submodule is connected to the duration judgment submodule and the suction device respectively, and is used to increase the frequency of the pulse signal according to a set step size when the blockage duration is greater than a set duration threshold.

[0017] Optionally, the setting step size is 2 Hz.

[0018] Optionally, the medical pulse thrombus removal system further includes:

[0019] The alarm module is connected to the suction device and is used to determine in real time whether the frequency of the pulse signal is greater than or equal to the set frequency threshold. If so, an alarm signal is generated to alert the staff to use physical methods to deal with the catheter blockage.

[0020] In a second aspect, the present application provides a medical pulsed thrombus removal method, comprising:

[0021] During thrombus removal, the status of the catheter is detected in real time; the status of the catheter is blocked or unblocked; one end of the catheter is located inside the blood vessel, and the other end extends outside the blood vessel and is connected to a suction device; the suction device is used to generate a pulse signal and aspirate the thrombus in the blood vessel through the catheter;

[0022] When the state of the catheter is blocked, the frequency of the pulse signal is dynamically adjusted according to the duration of the blockage.

[0023] Optionally, the medical pulsed thrombus removal method further comprises:

[0024] It is determined in real time whether the frequency of the pulse signal is greater than or equal to the set frequency threshold. If so, an alarm signal is generated to alert the staff to use physical methods to deal with the catheter blockage.

[0025] In a third aspect, the present application provides a medical pulsed thrombectomy system, the medical pulsed thrombectomy system comprising at least one of the first set of features and the second set of features:

[0026] The first set of characteristics includes:

[0027] A catheter monitoring module is used to monitor the status of the catheter in real time during thrombus removal; the status of the catheter is whether it is blocked or unblocked; one end of the catheter is located inside the blood vessel, and the other end extends outside the blood vessel and is connected to a suction device; the suction device is used to generate a pulse signal and aspirate the thrombus in the blood vessel through the catheter;

[0028] a frequency adjustment module, connected to the catheter monitoring module and the suction device, respectively, for dynamically adjusting the frequency of the pulse signal according to the duration of the blockage when the catheter is blocked;

[0029] The second set of characteristics includes:

[0030] an air pressure sensor, disposed in the catheter, for collecting the air pressure value of the catheter in real time when suction is performed in the blood vessel;

[0031] The suction controller is connected to the air pressure sensor and the suction device respectively, and is used to identify the thrombus state in the blood vessel according to the air pressure value of the catheter.

[0032] Optionally, the catheter includes a suction extension tube portion and a suction catheter portion; the connection between the suction extension tube portion and the suction catheter portion is configured to be detachable; the suction controller is provided on the suction extension tube portion; and the distal end of the suction catheter portion can be placed into a blood vessel.

[0033] Optionally, the suction extension tube includes a Luer connector, a suction hose, a power adapter, a suction control module, and a switch; the distal end of the suction hose is connected to the Luer connector, its proximal end is connected to the suction control module, and the switch is connected between its two ends.

[0034] Optionally, the system further comprises a separator, an introducer and a hemostatic valve; the separator is used to clear the inner lumen of the suction catheter.

[0035] Optionally, the suction device includes a negative pressure suction pump and a disposable collection canister; the disposable collection canister is used to collect the adsorbate.

[0036] Optionally, the disposable collection tank is equipped with a stop-flow filter; the stop-flow filter includes a self-sealing material; when the stop-flow filter comes into contact with the liquid, the self-sealing material can prevent the liquid from entering the pump; the disposable collection tank includes an upper cover with a conical interface, which is convenient for connecting the pipeline during suction surgery.

[0037] Optionally, the negative pressure suction pump is a floating vortex compression pump; the negative pressure suction pump includes a fixed involute scroll disk and an involute motion scroll disk that eccentrically rotates and translates.

[0038] Optionally, the system also includes a shell for supporting a negative pressure suction pump and a disposable collection tank; an operator interface and a pressure relief button are disposed on the shell; the operator interface includes a switch button and an indicator light; the indicator light is used to indicate the suction status.

[0039] Optionally, the suction status includes blood status, thrombus status, tube blockage status and fault status; the color of the indicator light corresponds to the suction status one by one.

[0040] Optionally, in the blood state, the medical pulse thrombectomy system automatically switches to the intermittent aspiration mode; in the thrombus state, the medical pulse thrombectomy system automatically switches to the continuous aspiration mode; in the blocked tube state, the medical pulse thrombectomy system automatically switches to the continuous aspiration mode.

[0041] According to the specific embodiments provided in this application, this application has the following technical effects:

[0042] This application provides a medical pulsed thrombus removal system and method. By monitoring the status of the catheter in real time and dynamically adjusting the frequency of the pulse signal generated by the suction device when the catheter is blocked, the system breaks down the thrombus blocked at the catheter orifice, thereby improving the efficiency of removing the blocked thrombus. This system can adaptively aspirate thrombi within the lumen based on the thrombus status within the lumen, improving the efficiency of thrombus aspiration and avoiding the problem of excessive blood loss caused by continuous aspiration when the lumen is pure blood, thereby improving the safety of thrombus aspiration. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] 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.

[0044] Figure 1 Schematic diagram of thrombus blocking the catheter port.

[0045] Figure 2 A block diagram of a medical pulsed thrombectomy system provided in accordance with an embodiment of the present application.

[0046] Figure 3 A schematic flow chart of a medical pulsed thrombus removal method provided in one embodiment of the present application.

[0047] Figure 4 A block diagram of an adaptive suction system based on intravascular state recognition provided in one embodiment of the present application.

[0048] Figure 5This is a structural diagram of an adaptive suction system based on intravascular state recognition provided by one embodiment of the present application.

[0049] Figure 6 A flowchart of an adaptive suction method based on intravascular state recognition provided in one embodiment of the present application.

[0050] Figure 7 A schematic diagram of the hardware composition of a medical pulsed thrombus removal system is provided for an embodiment of the present application. Figure 1 .

[0051] Figure 8 A schematic diagram of the hardware composition of a medical pulsed thrombus removal system is provided for an embodiment of the present application. Figure 2 .

[0052] Figure 9 A schematic diagram of a medical pulsed thrombectomy system that is convenient to disassemble and assemble is provided for one embodiment of the present application.

[0053] Figure 10 A cross-sectional view of a medical pulsed thrombectomy system is provided for one embodiment of the present application.

[0054] Figure 11 A schematic structural diagram of an intelligent thrombus aspiration extension tube coupled to an aspiration catheter is provided for one embodiment of the present application.

[0055] Figure 12 A schematic diagram of a suction catheter kit with accessories is provided for one embodiment of the present application.

[0056] Figure 13 A cross-sectional view of a disposable collection canister used in conjunction with a medical pulsed thrombectomy system is provided for one embodiment of the present application.

[0057] Figure markings: 2-suction extension tube; 201-catheter monitoring module; 202-frequency adjustment module; 203-catheter; 204-suction device; 205-alarm module; 206-suction controller; 207-air pressure sensor; 2031-Luer connector; 2032-switch handle; 2033-power adapter; 1000-medical pulse thrombus removal system; 11-negative pressure suction pump; 12-disposable collection tank; 120-collection tank cover; 121-tank; 122-conical interface; 123-stop filter; 13-pump host card slot; 14-pressure relief button; 15-user operation interface; 3-suction catheter part; 2035-Y-type hemostatic valve; 2036-introducer; 2037-separator. DETAILED DESCRIPTION

[0058] 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.

[0059] When using a catheter to aspirate thrombus, during the negative pressure rising stage, due to the large blood flow and short rising time, the pressure acting on the thrombus can be regarded as an impact load. This impact load causes the thrombus to deform, and the elastic force generated and the pressure caused by the negative pressure act together on the thrombus, causing structural changes inside the thrombus. In the subsequent pressure maintenance process, due to the gradual deformation of the thrombus and the effect of blood flow inside the catheter, the suction force at the distal end of the catheter will slowly decrease to a threshold value. This threshold value is related to parameters such as the negative pressure value, intracranial pressure, blood viscosity, catheter and pressure extension tube specifications. If the pressure maintenance time is sufficient, the thrombus will reach a state of equilibrium and the internal structure will no longer change. Under stable negative pressure, the above process has only one cycle. If the impact load at startup cannot move the thrombus, the stubborn thrombus will gradually reach a state of equilibrium under stable negative pressure and remain stable. The static friction between it and the blood vessel wall is greater than the suction force at the end of the catheter, and it cannot be extracted, causing blockage at the catheter mouth. Figure 1 shown.

[0060] The related technology uses a guidewire installed in the catheter to break up the blood clot blocking the catheter opening and achieve suction. This physical treatment method is inefficient and relies on the doctor's experience to achieve, and its safety is difficult to guarantee.

[0061] Alternatively, a pulsed signal can be used to gradually dissolve a clot blocking the catheter orifice through an aspiration-release-absorption-release process. When pulses are applied, impact loads are repeatedly applied to the clot and surrounding vessels, resulting in significant time-varying forces on the clot and surrounding vessels in terms of aspiration driving force, frictional resistance, inertial force, and elastic force. Because a clot is a non-uniform viscoelastic solid, the strain reduction caused by a decrease in stress under tension lags behind the strain caused by an increase in stress. Furthermore, prolonged periods of equilibrium in tension can cause some deformation in the viscoelastic solid, preventing full recovery. Consequently, under the action of a pulse, the clot enters the next pulse cycle before returning to its initial state. The cumulative structural changes from multiple pulses, combined with the impact load from the last pulse's rise, cause the clot to move slightly, shifting its friction from static to smaller dynamic friction, making it easier to extract. This method uses a fixed pulse signal frequency and employs a single, set frequency to dissolve the clot, resulting in low efficiency.

[0062] The present application decomposes the blocked thrombus at the catheter port by adjusting the frequency of the pulse signal, that is, adjusting the time interval between suction and discharge, thereby improving the decomposition efficiency of the blocked thrombus and ensuring safety.

[0063] 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.

[0064] In an exemplary embodiment, Figure 2 As shown, a medical pulsed thrombus removal system is provided, including a catheter monitoring module 201 and a frequency adjustment module 202.

[0065] Catheter monitoring module 201 is used to monitor the status of catheter 203 in real time during thrombus removal. The status of catheter 203 is either blocked or unblocked. One end of catheter 203 is located inside the blood vessel, while the other end extends outside the vessel and connects to aspiration device 204. Aspiration device 204 is used to generate a pulse signal and aspirate thrombi within the vessel through catheter 203.

[0066] In a specific application example, the catheter monitoring module 201 includes a pressure detection submodule and a blockage determination submodule.

[0067] The pressure detection submodule is disposed inside the catheter 203 and is used to detect the pressure value inside the catheter 203 in real time during thrombus removal. The pressure detection submodule is a pressure sensor.

[0068] The blockage determination submodule is connected to the pressure detection submodule, and is used to determine the state of the catheter 203 according to the pressure value.

[0069] Specifically, when the pressure value is greater than a set pressure threshold, the state of the conduit 203 is blocked, otherwise the state of the conduit 203 is not blocked. The pressure threshold corresponding to the blockage at the conduit opening is determined by conducting multiple experiments in advance.

[0070] The frequency adjustment module 202 is connected to the catheter monitoring module 201 and the suction device 204 respectively. The frequency adjustment module 202 is used to dynamically adjust the frequency of the pulse signal according to the duration of the blockage when the catheter 203 is blocked. The frequency adjustment module 202 is a controller.

[0071] In another exemplary embodiment, the frequency adjustment module 202 is further configured to control the frequency of the pulse signal to maintain a set frequency value when the catheter 203 is not blocked.

[0072] In a specific application example, the frequency adjustment module 202 includes a duration determination submodule and a frequency adjustment submodule.

[0073] The duration determination submodule is connected to the catheter monitoring module 201 and is used to determine whether the duration of the blockage is greater than a set duration threshold. The set duration threshold is determined by multiple experiments in advance, for example, 10 seconds.

[0074] The frequency adjustment submodule is connected to the duration determination submodule and the suction device 204 respectively. The frequency adjustment submodule is used to increase the frequency of the pulse signal according to a set step size when the blockage duration is greater than a set duration threshold. Preferably, the set step size is 2 Hz.

[0075] In order to ensure the safety of thrombus aspiration, the medical pulse thrombus removal system further includes an alarm module 205 .

[0076] The alarm module 205 is connected to the suction device 204 and is used to determine in real time whether the frequency of the pulse signal is greater than or equal to a set frequency threshold. If so, an alarm signal is generated to alert the staff to use physical methods to deal with the catheter blockage.

[0077] Among them, by conducting multiple experiments in advance, the maximum frequency value of the pulse signal is determined, and this is used as the set frequency threshold. When the frequency of the pulse signal increases to the set frequency threshold, it means that the problem of catheter port blockage cannot be overcome by pulse frequency conversion. At this time, a physical method is required to break up the thrombus blocking the catheter port by setting a guide wire in the catheter 203.

[0078] In one specific application example, the pressure sensor detects internal catheter pressure to determine if the catheter port is blocked. If the port is not blocked, a low-frequency (e.g., 1 Hz) pulse signal is used to aspirate the thrombus. If the port is blocked and the blockage persists for more than 10 seconds, the pulse signal frequency is increased to 3 Hz, and the catheter port is continuously monitored for blockage. If the port is still blocked and the blockage persists for more than 10 seconds, the pulse signal frequency is increased again until it is cleared, at which point the pulse signal frequency is adjusted back to a low frequency (1 Hz). Furthermore, if the blockage persists even after increasing the frequency to the maximum, physical measures are needed to address the blockage.

[0079] In an exemplary embodiment, the suction device 204 includes pipeline fittings, a pulsed negative pressure end, a proportional valve, a collection tank, a negative pressure regulating valve, a vacuum pump, a transmission device, and a servo motor.

[0080] The pipeline fitting is connected to the conduit 203, the pulse negative pressure end and the proportional valve are both installed in the pipeline fitting, one end of the collection tank is connected to the proportional valve, the other end of the collection tank is connected to one end of the negative pressure regulating valve, the other end of the negative pressure regulating valve is connected to the vacuum pump, the transmission device is connected to the negative pressure regulating valve, and the servo motor is respectively connected to the transmission device and the frequency adjustment module 202. The collection tank is used to collect the basic negative pressure.

[0081] The base negative pressure is the negative pressure delivered by the vacuum pump to the collection tank. It serves as the basis for 100% regulation of the proportional valve, improving the accuracy of negative pressure regulation and ensuring safety. The negative pressure provided by the vacuum pump is connected to the negative pressure regulating valve via a pipeline. The output of the negative pressure regulating valve is related to its angular position, allowing for more precise regulation of the output base negative pressure.

[0082] The pulsed negative pressure is output to conduit 203 and is provided by a proportional valve between the collection tank and the extension tube. Pulses are generated by controlling the proportional valve's output. Due to the relatively small volume of liquid within the extension tube and conduit 203, pulse delay is minimal, enabling high-frequency, high-pressure differential negative pressure pulse output. The proportional valve proportionally outputs a corresponding negative pressure based on the base negative pressure, thereby controlling specific pulse parameters, including pulse waveform, peak pressure, differential pressure, frequency, rise time, dwell time, fall time, duty cycle, and frequency.

[0083] Among them, the pressure regulating valve adopts a precise large-flow vacuum pressure regulating valve with a valve accuracy of up to 0.2kPa and a control accuracy stable within 1kPa, which can stably control the basic negative pressure; the proportional valve accuracy can also be stable within 1kPa, and the overall control accuracy greatly exceeds the traditional pressure regulating knob.

[0084] The present application dynamically adjusts the frequency of the pulse signal to cause the thrombus clot blocking the catheter port to oscillate back and forth, thereby efficiently solving the problem of thrombus blockage at the catheter port.

[0085] Based on the same inventive concept, the present application also provides a method for applying the aforementioned medical pulsed thrombectomy system. The solution provided by this method is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more of the following embodiments of the medical pulsed thrombectomy method can be found in the above-mentioned limitations on the medical pulsed thrombectomy system and will not be further elaborated here.

[0086] In an exemplary embodiment, Figure 3 As shown, a medical pulse thrombus removal method is provided, including the following steps 301 to 303.

[0087] Step 301: During thrombus removal, the status of the catheter is monitored in real time. The status of the catheter is either blocked or unblocked. One end of the catheter is located inside the blood vessel, while the other end extends outside the blood vessel and is connected to a suction device. The suction device is used to generate a pulse signal and aspirate the thrombus within the blood vessel through the catheter.

[0088] Step 302 : When the state of the catheter is blocked, dynamically adjust the frequency of the pulse signal according to the duration of the blockage.

[0089] Step 303: determine in real time whether the frequency of the pulse signal is greater than or equal to a set frequency threshold. If so, generate an alarm signal to alert the staff to use physical means to deal with the catheter blockage.

[0090] In order to strictly control the patient's blood loss during surgery, the present application also provides an adaptive suction system that can identify the thrombus status; the adaptive suction system can be used alone or in conjunction with the catheter monitoring module and the frequency adjustment module to improve the efficiency of thrombus removal.

[0091] In an exemplary embodiment, Figure 4 and Figure 5 As shown, an adaptive suction system based on lumen state recognition is provided, including an air pressure sensor 207 and a suction controller 206.

[0092] The air pressure sensor 207 is arranged in the conduit 203 (such as Figure 9 As shown, the air pressure sensor 207 is usually deployed in the suction extension tube 2 and close to the switch handle 2032; sometimes it is also deployed near the end of the Luer connector 2031). It is used to collect the air pressure value of the catheter 203 in real time when suctioning the blood vessel lumen. Figure 7 As shown, one end of the suction catheter portion 3 is located in the lumen, and the other end extends to the outside of the lumen and is connected to the Luer connector 2031.

[0093] The suction controller 206 is connected to the air pressure sensor 207 and the suction device 204, respectively. The suction controller 206 is used to identify the state of the thrombus in the vascular cavity near the end of the suction catheter portion 3 placed in the vascular cavity based on the air pressure value of the catheter 203, and adjust the operating state of the suction device 204 according to the thrombus state in the vascular cavity to aspirate the thrombus in the vascular cavity through the suction catheter portion 3. The thrombus state includes pure blood, mixed thrombus in blood, and thrombus blockage.

[0094] In a specific application example, the suction controller 206 can be a main control printed circuit board (PCB), which is connected to a power module via a power adapter 2033 (typically, the power module is deployed in the suction device 204 and is connected to the control circuit of the suction device 204). The PCB can also integrate the catheter monitoring module 201 and the frequency adjustment module 202 and be fixed by a shell support; Figure 5 As shown, the circuit board is fixed in the fixed shell, and the conduit 203 and the power adapter 2033 are fixed on both sides of the fixed shell respectively, forming a fixed shell. Figure 7 The traditional Chinese medicine pulse thrombectomy system 1000 has a relatively independent suction extension tube portion 2 (also called an intelligent suction extension tube).

[0095] As an optional embodiment, a switch handle 2032 is provided between the suction catheter portion 3 and the suction extension tube portion 2. The air pressure sensor 207 is provided at the switch handle 2032. The suction extension tube portion 2 is connected to the suction catheter portion 3 via a Luer connector 2031.

[0096] In an exemplary embodiment, the suction controller 206 includes a data processing module and a control module.

[0097] The data processing module is connected to the air pressure sensor 207 , and is used to identify the thrombus status in the lumen according to the air pressure value of the catheter 203 .

[0098] The control module is connected to the data processing module and the suction device 204. The control module is used to adjust the operating state of the suction device 204 (e.g., intermittent / pulse suction, variable-frequency pulse suction, or continuous suction) according to the state of the thrombus in the blood vessel lumen, thereby aspirating the thrombus in the lumen through the suction catheter portion 3. Variable-frequency pulse suction achieves precise energy control by adjusting the frequency, width, or amplitude of the pulse signal.

[0099] As an optional embodiment, the data processing module is specifically configured to: determine the relationship between the air pressure value of the catheter 203 and a first set air pressure threshold and a second set air pressure threshold; if the air pressure value of the catheter 203 is greater than the first set air pressure threshold, the thrombus state in the blood vessel lumen is thrombus obstruction; if the air pressure value of the catheter 203 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 blood vessel lumen is mixed thrombus in blood; if the air pressure value of the catheter 203 is less than the second set air pressure threshold, the thrombus state in the blood vessel lumen is pure blood. The first set air pressure threshold is greater than the second set air pressure threshold.

[0100] 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.

[0101] The first air pressure acquisition unit is connected to the air pressure sensor 207 and is used to acquire the air pressure value of the catheter 203 when the suction device 204 is closed, so as to obtain a first air pressure value.

[0102] The second air pressure acquisition unit is connected to the air pressure sensor 207 and is used to acquire the air pressure value of the catheter 203 after the suction device 204 is turned on for a set time to obtain a second air pressure value.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] In addition, the suction controller 206 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.

[0107] The present application only requires the installation of a single air pressure sensor 207 and the use of relevant numerical comparisons to adaptively aspirate blood clots within the vascular lumen based on the thrombus state within the lumen. This improves the efficiency of clot aspiration 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.

[0108] 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.

[0109] In an exemplary embodiment, Figure 6 As shown, an adaptive suction method based on lumen state recognition is provided, including the following steps 304 to 306.

[0110] Step 304: When the blood vessel cavity is being aspirated, the air pressure value of the catheter is collected in real time. One end of the aspiration catheter is located in the blood vessel cavity, and the other end extends to the outside of the blood vessel cavity and is connected to the aspiration extension tube.

[0111] Specifically, an air pressure sensor is provided at the switch handle of the suction extension tube to detect the air pressure value of the catheter in real time.

[0112] like Figures 7 to 13 As shown, in a specific application example, the suction device 204 includes a negative pressure suction pump 11 and a disposable collection tank 12. The negative pressure suction pump 11 is provided with a vacuum pump, and the vacuum pump and the disposable collection tank 12 are connected through the pump host card slot 13. The suction extension tube 2 and the disposable collection tank 12 are connected through the tapered interface 122. The suction extension tube 2 and the suction catheter part 3 are connected through the Luer connector 2031; the suction extension tube 2 and the power adapter 2033 are connected to the control circuit / integrated circuit PCB associated with the user operation interface 15; by controlling the operating state of the vacuum pump in the negative pressure suction pump 11, suction of the blood vessel cavity is achieved; as shown Figure 10 As shown, the liquid circuit and the gas circuit are coupled through a disposable collecting tank 12 .

[0113] Step 305: Identify the thrombus status in the blood vessel cavity based on the air pressure value of the catheter 203. The thrombus status includes pure blood, mixed thrombus in blood, and thrombus blockage.

[0114] In a specific application example, the relationship between the air pressure value of the catheter 203 and a first set air pressure threshold and a second set air pressure threshold is determined; if the air pressure value of the catheter 203 is greater than the first set air pressure threshold, the thrombus state in the blood vessel lumen is thrombus obstruction; if the air pressure value of the catheter 203 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 blood vessel lumen is mixed thrombus in blood; if the air pressure value of the catheter 203 is less than the second set air pressure threshold, the thrombus state in the blood vessel lumen is pure blood. The first set air pressure threshold is greater than the second set air pressure threshold.

[0115] In another specific application example, the air pressure in catheter 203 is obtained when suction device 204 is closed, obtaining a first air pressure value. The air pressure in catheter 203 is obtained after suction device 204 is opened for a set period of time, obtaining 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 vascular lumen is determined based on the slope of the line showing the change in air pressure over time.

[0116] The set time can be 100 milliseconds. In this example, the air pressure value at the switch handle 2032 is collected in different time periods: once when the suction device 204 is closed, and again 100 milliseconds after the suction device 204 is opened. Based on the time and air pressure values ​​of the two collections, a straight line of the air pressure change over time is plotted, and the suction slope is calculated to identify whether there is a thrombus in the blood vessel cavity.

[0117] 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 of the blood vessel 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 in the blood vessel 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 in the blood vessel lumen is pure blood. The first set slope threshold is greater than the second set slope threshold.

[0118] 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.

[0119] Step 306 : adjusting the operating state of the suction device 204 according to the state of the thrombus in the blood vessel lumen, so as to suction the thrombus in the blood vessel lumen through the suction catheter portion.

[0120] In a specific application example, the operation state of the suction device 204 is adjusted by a solenoid valve. Specifically, the operation state of the suction device 204 is adjusted by controlling the opening time and closing time of the solenoid valve in each cycle.

[0121] Specifically, when the thrombus in the vessel lumen is pure blood, the solenoid valve is open for a period of 200 to 2000 milliseconds during the next cycle, remaining closed for the remainder of the time. In this state, blood loss needs to be minimized, so the solenoid valve's open time is significantly shorter than its closed time. The preferred ratio of open time to closed time is 0.2 to 0.5.

[0122] When the thrombus in the blood vessel lumen is mixed with blood, the solenoid valve is closed for 500 to 2000 milliseconds during the next cycle, and remains open for the rest 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 almost the same, or the open time is greater than the closed time. A preferred ratio of open to closed time is 1 to 5.

[0123] When the thrombus in the blood vessel lumen is blocked, the solenoid valve is opened for a much longer time 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 opening time is greater than or equal to 2000 milliseconds.

[0124] The medical pulse thrombus removal system 1000 provided by the present invention may also include a thrombus aspiration catheter kit if necessary: Figure 12 As shown, the thrombus aspiration catheter kit includes an aspiration catheter unit 3 and a separator 2037; the thrombus aspiration catheter kit is intended for aspirating thrombi within blood vessels (excluding neurovascular vessels). The thrombus aspiration catheter kit also includes a Y-shaped hemostatic valve 2035, an introducer 2036, a tearable sheath, and a shaped needle. Typically, the thrombus aspiration catheter kit is packaged separately from the aspiration extension tube unit 2.

[0125] The thrombus aspiration catheter kit is designed for removing thrombi from blood vessels through mechanical aspiration. The goal of the thrombus aspiration catheter kit is to directly aspirate thrombi using a vacuum pump. If the thrombus aspiration catheter is blocked by thrombus, a separator 2037 can be used to clear the lumen of the thrombus aspiration catheter. The thrombus aspiration catheter is introduced into a peripheral vessel via a guide catheter or vascular sheath and guided over a guidewire to the primary occlusion site. The aspiration catheter is used in conjunction with aspiration device 204 (vacuum aspiration pump 11) to aspirate thrombi from the occluded vessel. If needed, a separator 2037 can be inserted into the aspiration catheter to assist in thrombus removal. Separator 2037 is advanced and retracted through the aspiration catheter at the proximal edge of the primary occlusion site to facilitate clearing thrombi from the aspiration catheter tip. The device is visible under X-ray fluoroscopy. The aspiration catheter is used in conjunction with aspiration device 204, connected to the aspiration device 204 using an aspiration extension tube. The suction catheter can be steam-shaped using a shaping needle, and can be equipped with a rotating hemostatic valve and a tearable sheath. The separator 2037 can be equipped with an introducer 2036 and a twister on the separator 2037.

[0126] Instructions for operating the thrombus aspiration catheter kit are as follows.

[0127] 1. Confirm the blood vessel diameter and select an appropriately sized suction catheter.

[0128] 2. If a shaping needle is provided, the tip of the suction catheter can be steam shaped.

[0129] 3. Connect the provided Y-shaped hemostatic valve 2035 to the suction catheter.

[0130] 4. If using a guide catheter, insert the aspiration catheter into the Y-shaped hemostasis valve 2035 connected to the proximal catheter hub of the guide catheter. If using a puncture sheath, insert the aspiration catheter through the puncture sheath valve using a tear-away sheath. After inserting the aspiration catheter through the puncture sheath valve, remove the tear-away sheath.

[0131] 5. Under X-ray fluoroscopic guidance, advance the aspiration catheter along the guidewire into the target vessel, place the aspiration catheter proximal to the thrombus, and remove the guidewire from the aspiration catheter.

[0132] 6. Connect the suction extension tube to the disposable collection canister 12 of the suction device 204 and turn on the negative pressure suction pump. Confirm that the negative pressure suction pump has reached maximum vacuum. Ensure that the suction extension tube is switched to the closed position.

[0133] Thrombus Aspiration Extension Tube (Aspiration Extension Tube Section 2): Consists of a Luer connector 2031, aspiration hose I, aspiration hose II, a suction connector, a power adapter 2033, a suction controller 206, and a switch. The Thrombus Aspiration Extension Tube transfers vacuum between the thrombus aspiration catheter and the thrombus aspiration negative pressure suction pump when providing intermittent or continuous aspiration.

[0134] The preparation and use of the thrombus aspiration extension tube are as follows.

[0135] 1. Connect the thrombus aspiration extension tube to a compatible disposable collection container (12). Simultaneously, plug the power adapter into the power port of the aspiration device (204). Then, turn on the aspiration pump. Verify that the aspiration pump has reached maximum vacuum. Ensure the device is switched to the OFF position.

[0136] 2. Connect the Luer connector 2031 female end of the thrombus aspiration extension tube to the swivel Luer connector male end of the aspiration catheter.

[0137] 3. To start aspiration, open the valve on the thrombus aspiration extension tube to the ON position and use a compatible aspiration catheter according to the relevant instructions for use.

[0138] 4. The light on the thrombus aspiration extension tube will illuminate to indicate the following conditions.

[0139] a. Solid Green = Thrombus Aspiration Extension Set is powered in the OFF position and ready for use.

[0140] b. Flashing Green = Thrombus Aspiration Extension Set is powered in the ON position.

[0141] c. Flashing Yellow = Thrombus Aspiration Extension Set is powered in the ON position and low / no flow is detected for more than 20 seconds.

[0142] d. Solid red = system error.

[0143] e. Flashing red = No vacuum detected.

[0144] 5. If a steady red light is observed, stop using the unit and replace as needed.

[0145] 6. To stop aspiration, move the switch on the thrombus aspiration extension tube to the OFF position and turn off the aspiration pump.

[0146] 7. After the treatment is completed, remove the controller at the entrance of the collection tank: after depressurizing the suction pump, remove the thrombus aspiration extension tube from the entrance of the collection tank, and disconnect the Type C port connected to the negative pressure suction pump 11.

[0147] Thrombus Aspiration Negative Pressure Pump (Aspiration Device 204): Serves as a negative pressure source for use with a validated thrombus aspiration catheter / thrombus aspiration catheter system for peripheral thrombus aspiration. This pump primarily utilizes floating vortex compression technology, a variable-volume compression technique consisting of a fixed involute scroll and an eccentrically swirling, translationally moving involute scroll, to generate a vacuum source. Waste fluid is collected in a disposable collection canister 12.

[0148] The thrombus aspiration negative pressure suction pump consists of a negative pressure suction pump 11 and a disposable collection canister 12. The disposable collection canister 12 includes a canister 121 and a stop-flow filter 123. The vacuum level is displayed by a four-position negative pressure indicator light. The higher the negative pressure indicator light, the higher the vacuum level, with a maximum vacuum level of 99kPa.

[0149] The thrombus aspiration negative pressure suction pump features a handle for easy movement. In the user interface 15, an indicator light on the on / off button indicates the operating status of the product. The disposable collection canister 12 features a dedicated connector. Simply align the bottom of the canister 12 with the pump main unit's slot 13 and press it into place, facilitating assembly and postoperative removal. The canister 12's top cover features a tapered connector 122 for easy connection to the tubing during the suction procedure.

[0150] The disposable collection tank 12 comes pre-installed with a removable tank cover 120 and a stop-flow filter 123. This filter is designed to prevent liquid and aerosol contamination of the suction pump. Made of a sintered porous material, it filters airborne particles while preventing the passage of aqueous liquids and aerosol contaminants. If the collection tank overflows, the filter self-seals upon contact with the liquid, halting suction and preventing the overflow from entering the pump, protecting the suction pump from contamination.

[0151] The operating procedure of the thrombus aspiration negative pressure suction pump is as follows.

[0152] 1. Place the pump on a flat, stable, load-bearing surface so that the power cord is easily accessible to the operator.

[0153] 2. Plug the power cord into the power socket, make sure the voltage is the same as that indicated on the device nameplate, and the green indicator light on the switch button lights up.

[0154] 3. Install the disposable collection canister 12 onto the thrombus aspiration negative pressure pump. Connect the tapered connector of the aspiration extension tube in the thrombus aspiration catheter / thrombus aspiration catheter system to the tapered interface 122 of the disposable collection canister 12. Turn off the switch on the aspiration extension tube and press the power button. The device will begin operating. The power button indicator will illuminate, and the negative pressure indicator lights will begin to illuminate in sequence.

[0155] 4. After the vacuum of the equipment stabilizes, all negative pressure indicators light up. At this time, the negative pressure in the collection tank reaches the working condition. Turn on the switch of the suction extension tube and the equipment can be used.

[0156] 5. During use, pay attention to the liquid level in the collection tank. If the filling level reaches 75% of the volume, replace the collection tank.

[0157] 6. After use, turn off the pump and press the on / off button. The negative pressure in the collection tank will be released and the negative pressure indicator lights will dim, indicating standby.

[0158] 7. Unplug the power plug and make sure the indicator light in the on / off button is no longer on.

[0159] Typically, the thrombus aspiration negative pressure suction pump further includes a pressure relief button 14 .

[0160] ZYLOX EagleEye ® The thrombus aspiration extension tube is an intelligent algorithm control unit designed for peripheral thrombus removal launched in this application, and adopts intelligent assisted mechanical thrombus aspiration technology (Computer-aided Mechanical Aspiration Thrombectomy, CMAT). The intelligent thrombus aspiration extension tube intelligently switches between intermittent or continuous thrombus aspiration mode by real-time monitoring of the blood flow or contact of the aspiration catheter in the unobstructed blood vessel segment, and prompts the operator with audio and visual signals when the aspiration catheter contacts the thrombus, thereby reducing blood loss. How to control the amount of blood loss is a major pain point for clinical use of negative pressure aspiration thrombus removal devices. Compared with other traditional mechanical thrombus removal technologies, ZYLOX EagleEye ® Thrombus aspiration extension tube can provide a safer and more efficient aspiration experience. ZYLOX EagleEye ® The thrombus aspiration extension tube has a built-in pressure sensor that identifies thrombus status through pressure changes within the aspiration catheter and intelligently switches aspiration modes, enabling intermittent or continuous aspiration, thereby strictly controlling blood loss. In a retrospective study of iliofemoral deep vein thrombosis removal, the median blood loss using this technology was only 155.0 mL, eliminating the need for postoperative blood transfusions. This not only significantly improves the efficiency of thrombus removal, but also avoids vascular damage and distal embolism caused by excessive aspiration, reducing surgical risks.

[0161] ZYLOX EagleEye ® Equipped with 4 signal lights and two sound prompts, it reminds the surgeon of the suction status in real time, making the operation more comfortable: Green light - blood status prompt (intermittent suction), indicating that there is no obvious thrombus in the blood vessel, the system automatically switches to intermittent suction mode (100ms of suction and 1s of pause), reducing unnecessary suction and controlling blood loss; Blue light - thrombus status prompt (continuous suction), indicating that thrombus is detected, the system automatically switches to continuous suction mode to ensure that the thrombus is efficiently removed; Yellow light - blocked tube status prompt (continuous suction), indicating that catheter 203 is blocked for more than 20s, the system will continue to suction to try to clear it, and prompt the surgeon to use separator 2037 to clear catheter 203 to improve operation efficiency; Red light - fault status, indicating that the system has detected a fault and the equipment needs to be checked to find and solve the problem in time to avoid delaying the operation.

[0162] The 3.3mm extra-large inner diameter design of the thrombus aspiration extension tube makes thrombus aspiration more efficient. The inner diameter of the traditional extension tube is about 2.8mm (>10F catheter inner diameter), while ZYLOX EagleEye ® The thrombus aspiration extension tube adopts an extra-large inner diameter design of 3.3mm (≈12F catheter inner diameter) to ensure efficient aspiration of thrombus and reduce the risk of tube blockage.

[0163] One-touch switch (2032), easy to operate: ZYLOX EagleEye ® Thrombus aspiration extension tube is equipped with a one-button switch design, which is easy to operate. ® When the thrombus aspiration extension tube switch is in the on state, the intelligent control unit will operate automatically, eliminating the need to frequently operate the manual switch, freeing the operator's hands.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] 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.

[0168] 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. A medical pulse thrombus removal system, characterized in that: The medical pulse thrombus removal system comprises: A catheter monitoring module is configured to detect the status of the catheter in real time during thrombus removal; the status of the catheter is either blocked or unblocked; one end of the catheter is located inside the blood vessel, and the other end extends to the outside of the blood vessel and is connected to a suction device; the suction device is configured to generate a pulse signal and aspirate the thrombus in the blood vessel through the catheter; the suction device comprises a pipeline fitting, a pulsed negative pressure end, a proportional valve, a collection tank, a negative pressure regulating valve, a vacuum pump, a transmission device, and a servo motor; wherein the pipeline fitting is connected to the catheter, the pulsed negative pressure end and the proportional valve are both disposed in the pipeline fitting, one end of the collection tank is connected to the proportional valve, the other end of the collection tank is connected to one end of the negative pressure regulating valve, the other end of the negative pressure regulating valve is connected to the vacuum pump, the transmission device is connected to the negative pressure regulating valve, and the servo motor is connected to the transmission device and the frequency adjustment module, respectively; the collection tank is configured to collect a base negative pressure; the base negative pressure is the negative pressure output to the collection tank by the vacuum pump, and the negative pressure provided by the vacuum pump is connected to the negative pressure regulating valve via a pipeline; the pulsed negative pressure is the negative pressure output to the catheter, provided by the proportional valve between the collection tank and the extension tube, and the pulse is provided by controlling the output of the proportional valve; a frequency adjustment module, connected to the catheter monitoring module and the suction device, respectively, for dynamically adjusting the frequency of the pulse signal according to the duration of the blockage when the catheter is blocked; The frequency adjustment module includes: A duration judgment submodule, connected to the catheter monitoring module, is used to judge whether the duration of the blockage is greater than a set duration threshold; The frequency adjustment submodule is connected to the duration judgment submodule and the suction device respectively, and is used to increase the frequency of the pulse signal according to a set step size when the blockage duration is greater than a set duration threshold; the set step size is 2Hz.

2. The medical pulse thrombectomy system according to claim 1, characterized in that: The catheter monitoring module includes: The pressure detection submodule is arranged inside the catheter and is used to detect the pressure value inside the catheter in real time when thrombus removal is performed; The blockage determination submodule is connected to the pressure detection submodule and is used to determine the state of the catheter according to the pressure value.

3. The medical pulse thrombectomy system according to claim 2, characterized in that: The pressure detection submodule is a pressure sensor.

4. The medical pulse thrombectomy system according to claim 2, characterized in that: When the pressure value is greater than a set pressure threshold, the state of the catheter is blocked; otherwise, the state of the catheter is not blocked.

5. The medical pulse thrombectomy system according to claim 1, characterized in that: The frequency adjustment module is further configured to control the frequency of the pulse signal to maintain a set frequency value when the catheter is in an unblocked state.

6. The medical pulse thrombectomy system according to claim 1, characterized in that: The medical pulse thrombus removal system also includes: The alarm module is connected to the suction device and is used to determine in real time whether the frequency of the pulse signal is greater than or equal to the set frequency threshold. If so, an alarm signal is generated to alert the staff to use physical methods to deal with the catheter blockage.

7. A medical pulse thrombus removal system, characterized in that: The medical pulsed thrombectomy system comprises a first set of features and a second set of features; The first set of characteristics includes: A catheter monitoring module is configured to detect the status of the catheter in real time during thrombus removal; the status of the catheter is either blocked or unblocked; one end of the catheter is located inside the blood vessel, and the other end extends to the outside of the blood vessel and is connected to a suction device; the suction device is configured to generate a pulse signal and aspirate the thrombus in the blood vessel through the catheter; the suction device comprises a pipeline fitting, a pulsed negative pressure end, a proportional valve, a collection tank, a negative pressure regulating valve, a vacuum pump, a transmission device, and a servo motor; wherein the pipeline fitting is connected to the catheter, the pulsed negative pressure end and the proportional valve are both disposed in the pipeline fitting, one end of the collection tank is connected to the proportional valve, the other end of the collection tank is connected to one end of the negative pressure regulating valve, the other end of the negative pressure regulating valve is connected to the vacuum pump, the transmission device is connected to the negative pressure regulating valve, and the servo motor is connected to the transmission device and the frequency adjustment module, respectively; the collection tank is configured to collect a base negative pressure; the base negative pressure is the negative pressure output to the collection tank by the vacuum pump, and the negative pressure provided by the vacuum pump is connected to the negative pressure regulating valve via a pipeline; the pulsed negative pressure is the negative pressure output to the catheter, provided by the proportional valve between the collection tank and the extension tube, and the pulse is provided by controlling the output of the proportional valve; a frequency adjustment module, connected to the catheter monitoring module and the suction device, respectively, for dynamically adjusting the frequency of the pulse signal according to the duration of the blockage when the catheter is blocked; The frequency adjustment module includes: a duration determination submodule connected to the catheter monitoring module, configured to determine whether the duration of the blockage is greater than a set duration threshold; a frequency adjustment submodule connected to the duration determination submodule and the suction device, respectively, configured to increase the frequency of the pulse signal according to a set step size when the duration of the blockage is greater than the set duration threshold; the set step size is 2 Hz; The second set of characteristics includes: an air pressure sensor, disposed in the catheter, for collecting the air pressure value of the catheter in real time when suction is performed in the blood vessel; The suction controller is connected to the air pressure sensor and the suction device respectively, and is used to identify the thrombus state in the blood vessel according to the air pressure value of the catheter.

8. The medical pulse thrombectomy system according to claim 7, characterized in that: The catheter includes a suction extension tube portion and a suction catheter portion; the connection between the suction extension tube portion and the suction catheter portion is configured to be detachable; the suction controller is provided on the suction extension tube portion; and the distal end of the suction catheter portion can be placed in a blood vessel.

9. The medical pulse thrombectomy system according to claim 8, characterized in that: The suction extension tube includes a Luer connector, a suction hose, a power adapter, a suction control module, and a switch; the distal end of the suction hose is connected to the Luer connector, the proximal end is connected to the suction control module, and the switch is connected between the two ends.

10. The medical pulse thrombectomy system according to claim 8, characterized in that: The medical pulse thrombus removal system further comprises a separator, an introducer and a hemostatic valve; the separator is used for clearing the inner cavity of the suction catheter.

11. The medical pulse thrombectomy system according to claim 7, characterized in that: The suction device also includes a negative pressure suction pump and a disposable collection canister; the disposable collection canister is used to collect the adsorbate.

12. The medical pulse thrombectomy system according to claim 11, characterized in that: The disposable collection tank has a built-in overflow filter; the overflow filter includes a self-sealing material; when the overflow filter comes into contact with the liquid, the self-sealing material can prevent the liquid from entering the pump; the disposable collection tank includes an upper cover with a conical interface, which is convenient for connecting the pipeline during suction surgery.

13. The medical pulse thrombectomy system according to claim 11, characterized in that: The negative pressure suction pump is a floating vortex compression pump; the negative pressure suction pump comprises a fixed involute scroll disk and an involute motion scroll disk which performs eccentric gyratory translation.

14. The medical pulse thrombectomy system according to claim 11, characterized in that: The medical pulse thrombus removal system also includes a shell for supporting a negative pressure suction pump and a disposable collection canister; an operator interface and a pressure relief button are disposed on the shell; the operator interface includes a switch button and an indicator light; the indicator light is used to indicate the suction status.

15. The medical pulse thrombectomy system according to claim 14, characterized in that: The suction status includes blood status, thrombus status, tube blockage status and fault status; the indicator light color corresponds to the suction status one by one.

16. The medical pulse thrombectomy system according to claim 15, characterized in that: In the blood state, the medical pulse thrombectomy system automatically switches to the intermittent aspiration mode; in the thrombus state, the medical pulse thrombectomy system automatically switches to the continuous aspiration mode; in the blocked tube state, the medical pulse thrombectomy system automatically switches to the continuous aspiration mode.

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