An ultrasound-assisted thrombolytic based thrombus aspiration catheter device

Abstract

The application discloses a kind of thrombus suction catheter device based on ultrasonic wave auxiliary thrombolysis, it is related to thrombus suction technical field, including pressurizing pump body, the side of pressurizing pump body is connected with physiological saline bag, the side of pressurizing pump and located above physiological saline bag is fixedly installed with multi-pass plate, by the setting of suction catheter module, pressure power module and pressurizing pump body etc. Structure, realize ultrasonic wave to accelerate thrombolytic drug decomposition and ultrasonic thrombolysis, make drug contact with thrombus fully, reduce the use amount of thrombolytic drug, improve drug thrombolysis effect, pressurizing power module drives physiological saline to form scouring jet through jet port, and the debris is stripped, avoid the damage of traditional constant high pressure to blood vessel wall, while suction port is in source instant suction and removes debris to outside, realize closed loop removal, greatly avoid distal embolism, to active and controllable treatment process, greatly shorten operation time, improve removal efficiency, and greatly enhance the safety of various blood vessels and patients.

Description

Technical Field

[0001] This invention relates to the field of thrombus aspiration technology, and in particular to a thrombus aspiration catheter device based on ultrasound-assisted thrombolysis. Background Technology

[0002] The incidence of vascular thromboembolic lesions is increasing year by year with the improvement of living standards. Currently, commonly used thrombectomy methods in hospitals include pharmacolytic thrombolysis and mechanical thrombectomy. Mechanical thrombectomy involves inserting a catheter and delivering miniature mechanical clamps, mechanical drills, ultrasound probes, laser probes, aspiration catheter tips, and retrievable vascular stents to the thrombus. The thrombus is clamped, broken up with a drill or probe, or aspirated or retained with a suction tip, or held in place by a stent or brush head. The thrombus is then moved out of the body through catheter manipulation. Currently, the most commonly used thrombus aspiration catheters typically rely on a power source for direct aspiration.

[0003] Patent document CN115429382A discloses a thrombolysis device comprising: a thrombolysis catheter and an ultrasonic transducer; a radially expandable and contractible stent located at the distal end of the ultrasonic transducer; the ultrasonic transducer being able to penetrate into the thrombolysis catheter from its proximal end; the ultrasonic transducer being able to move axially relative to the thrombolysis catheter, allowing the stent to extend beyond the distal end of the thrombolysis catheter and enabling the ultrasonic transducer to either block or open the distal end of the thrombolysis catheter; a perfusion channel is formed between the ultrasonic transducer and the thrombolysis catheter, and the ultrasonic transducer is used to radiate ultrasonic energy. This invention, through the ultrasonic transducer radiating ultrasonic energy to assist thrombolysis, effectively improves thrombolysis efficiency and also prevents fragmented thrombi from blocking the distal end of the blood vessel by blocking the distal end of the thrombus via the stent.

[0004] However, the thrombolysis time is also relatively long, and the method of impacting blood vessels with constant high pressure is not applicable to all patients and diseased blood vessels. It is easy to damage the patient's blood vessels. The dissolved thrombus still needs to be absorbed by the patient himself. In addition, the treatment time is long and multiple operations are required, which has certain risks and limitations. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a thrombus aspiration catheter device based on ultrasound-assisted thrombolysis. The invention adopts the following technical solution:

[0006] A thrombus aspiration catheter device based on ultrasound-assisted thrombolysis includes a pressure pump body, a saline bag connected to the side of the pressure pump body, a multi-port plate fixedly installed on the side of the pressure pump body and above the saline bag, a connecting tube connected to one side of the multi-port plate, and an aspiration catheter module installed on the other side of the connecting tube.

[0007] The aspiration catheter module includes a Luer connector installed at one end of the connecting tube. A W valve body is fixedly installed at the end of the Luer connector. The surface of the W valve body is conical. An aspiration catheter is fixedly installed on one of the pointed ends of the W valve body. A tip tube is installed at the other end of the aspiration catheter. The tip tube includes several ultrasonic transducers. Two spray ports for spraying physiological saline are opened on the tip tube near the ultrasonic transducers. A return port for absorbing thrombi is opened near the outer side of the tip tube.

[0008] The surface of the pressurized pump body is provided with a pressurized power module that provides power.

[0009] Preferably, the saline bag is connected to the spray nozzle, the multi-pass plate is connected to a waste liquid bag through a pipe at the bottom, the return port is connected to the waste liquid bag, and the opening slope of the spray nozzle is 45 degrees.

[0010] Preferably, the ultrasonic transducer includes a positive electrode and a negative electrode, and a temperature sensor disposed between the positive electrode and the negative electrode. The ultrasonic transducer is a tubular ceramic tube, and both the positive electrode and the negative electrode are electrically connected to an external ultrasonic generator via wires.

[0011] Preferably, a guide wire port is fixedly installed at one end of the W valve body, a guide wire cavity is opened inside the suction conduit, the guide wire port is connected to the guide wire cavity, a contrast ring is installed on one side of the suction conduit near the tip tube, the outer surfaces of the suction conduit and the tip tube are coated with an innovative super-slippery anti-coagulation coating, and a sealing connector is fixedly installed on the side of the W valve body.

[0012] Preferably, the suction conduit has a plurality of main tubes inside, which are connected to a multi-pass plate, and the outer surfaces of the plurality of main tubes are provided with injection holes corresponding to the positions of the injection ports.

[0013] Preferably, a pump rod is slidably connected inside the pressurizing pump body, and a pressurizing power module for driving the pump rod is provided on the outer surface of the pump rod.

[0014] Preferably, the pressurization power module includes a support frame, a servo motor, a crank, a slider, a consumable chuck, and a base. The servo motor is mounted on the surface of the support frame, and a turntable is fixedly mounted on the output end of the servo motor.

[0015] Preferably, a crank is rotatably connected to one side of the turntable at an eccentric position, a consumable chuck is rotatably connected to one end of the crank, and a slider is slidably connected to one side of the consumable chuck, with the slider fixedly mounted on the surface of the support frame.

[0016] Preferably, a base is placed on the surface of the support frame, and the base can be connected to the consumable clamp by bolts. The pump rod is clamped and installed on the base and the consumable clamp.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Through the design of the aspiration catheter module, the pressure power module, and the pressurization pump, ultrasound is used to accelerate the decomposition of thrombolytic drugs and perform ultrasonic thrombolysis, allowing the drugs to fully contact the thrombus, reducing the amount of thrombolytic drugs used and improving the thrombolytic effect. The pressurization power module drives the saline to form a flushing jet through the jet port, which dissipates the fragments and avoids the damage to the blood vessel wall caused by traditional constant high pressure. At the same time, the aspiration port immediately removes the fragments to the outside of the body at the source, realizing closed-loop clearance, which greatly avoids distal embolism. This active and controllable treatment process significantly shortens the operation time, improves clearance efficiency, and greatly enhances the safety for various blood vessels and patients.

[0019] 2. The pressurization power module features three adjustable spray pressure levels: high, medium, and low. Operators can flexibly select the appropriate level based on the patient's age, vessel diameter, and thrombus hardness, avoiding damage to the vessel wall and hemolysis caused by constant high pressure, while also reducing patient discomfort. The aspiration catheter tip sprays fragmented thrombi and draws them back out of the body. The entire thrombectomy process can be performed by the operator in one session, resulting in a short, simple, and efficient procedure. The built-in ultrasound generator provides the transducer with AC power of appropriate frequency and pulse width, ensuring effective ultrasonic thrombolysis. The accompanying peristaltic pump actively assists in aspiration, working in conjunction with Bernoulli negative pressure to enhance the reliability of thrombus aspiration and prevent catheter blockage. In summary, the pressurization power device greatly improves the safety and ease of operation of the procedure.

[0020] 3. The aspiration catheter and the outer layer of the tip are coated with an ultra-slippery anticoagulant coating. This ultra-slippery anticoagulant coating reduces the friction coefficient of the catheter surface, making the pushing process smooth and effortless, avoiding difficulties in advancement. At the same time, it avoids the catheter scraping and irritating the vascular endothelium, reducing the risk of vascular damage. Its anticoagulant properties effectively inhibit the adhesion of thrombi to the catheter wall, thereby preventing catheter blockage. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a front view structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the aspiration catheter module in this invention;

[0025] Figure 4 This is a front view of the suction catheter module in this invention.

[0026] Figure 5 This is a schematic diagram of the guidewire cavity and the main tube in this invention;

[0027] Figure 6 This is a partial structural schematic diagram of the suction catheter module in this invention;

[0028] Figure 7 This is a schematic diagram of the ultrasonic transducer in this invention;

[0029] Figure 8 This is a schematic diagram of the pressurized power module in this invention.

[0030] In the diagram: 1. Pressure pump body; 2. Saline bag; 3. Multi-pass plate;

[0031] 4. Suction catheter module; 41. Luer connector; 42. W valve body; 421. Guide wire port; 422. Guide wire cavity; 43. Suction catheter; 44. Tip tube; 45. Ultrasonic transducer; 46. Jet port; 47. Backflow port; 48. Sealing connector; 49. Imaging ring;

[0032] 5. Pressurized power module; 51. Support frame; 52. Servo motor; 53. Crank; 54. Slider; 55. Consumable chuck; 56. Base;

[0033] 6. Waste liquid bag; 7. Spray hole; 8. Pump rod; 9. Main pipe. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example: Refer to Figures 1 to 6 As shown, a thrombus aspiration catheter device based on ultrasound-assisted thrombolysis includes a pressure pump body 1, a saline bag 2 connected to the side of the pressure pump body 1, and a multi-port plate 3 fixedly installed on the side of the pressure pump body 1 and above the saline bag 2. A connecting tube is connected to one side of the multi-port plate 3, and an aspiration catheter module 4 is installed on the other side of the connecting tube.

[0036] The aspiration catheter module 4 includes a Luer connector 41 installed at one end of the connecting tube. A W valve body 42 is fixedly installed at the end of the Luer connector 41. The surface of the W valve body 42 is conical. An aspiration catheter 43 is fixedly installed on one side of the tip of the W valve body 42. A tip tube 44 is installed at the other end of the aspiration catheter 43. The tip tube 44 includes several ultrasonic transducers 45. Two spray ports 46 for spraying physiological saline are opened on the tip tube 44 near the ultrasonic transducers 45. A return port 47 for absorbing thrombi is opened near the outer side of the tip tube 44.

[0037] The surface of the pressurizing pump body 1 is provided with a pressurizing power module 5 that provides power.

[0038] The external material of the booster pump body 1 is nylon, the multi-port plate 3 is plastic, the infusion tubing and waste tubing connection are silicone, the suction tubing 43 connection is nylon, the W valve body 42 and Luer connector 41 are plastic, and the suction tubing 43 and tip tube 44 are PBEX.

[0039] Specifically, refer to Figure 6 As shown, the saline bag 2 is connected to the spray nozzle 46, the multi-pass plate 3 is connected to the waste liquid bag 6 through the bottom pipe, the return port 47 is connected to the waste liquid bag 6, and the opening slope of the spray nozzle 46 is forty-five degrees.

[0040] When the water jet is sprayed onto the outer wall of the tip tube 44, it forms a cutting water jet at a 45-degree angle to the spray nozzle 46, which effectively removes the thrombus and reduces direct damage to the blood vessel wall. Due to the high-pressure jet from the spray nozzle 46, a negative pressure is generated at the suction port due to Bernoulli's principle, which draws the thrombus from the suction port 47. At the same time, the pressurized pump body 1 pulls back, and the peristaltic pump runs.

[0041] Specifically, refer to Figure 7 As shown, the ultrasonic transducer 45 includes a positive electrode and a negative electrode, and a temperature sensor disposed between the positive electrode and the negative electrode. The ultrasonic transducer 45 is a tubular ceramic tube. Both the positive electrode and the negative electrode are electrically connected to an external ultrasonic generator through wires. The ultrasonic transducer 45 is a tubular ceramic tube composed of positive and negative electrodes and wires, and the wires are connected to a power device.

[0042] Multiple ultrasonic transducers 45 can be excited by the ultrasonic generator of the power equipment to emit ultrasonic waves to break up thrombi, greatly improving the efficiency of thrombectomy. Furthermore, the vibration of the ultrasonic transducers 45 can accelerate the decomposition of thrombolytic drugs and rapidly dissolve thrombi.

[0043] The temperature sensor can detect the temperature of the ultrasonic transducer 45 to prevent damage to blood vessels. The electrode material of the ultrasonic transducer 45 is gold with an insulating and super-slippery coating on the surface. The wires of the transducer and the temperature sensor have plastic insulating outer sheaths and copper inner cores. They are connected to the active pressurization power device through the gap between the main tube 9 and the catheter. The imaging ring 49 is made of tantalum alloy.

[0044] Specifically, refer to Figure 5 and Figure 6 As shown, a guide wire port 421 is fixedly installed at one end of the W valve body 42, and a guide wire cavity 422 is opened inside the suction conduit 43. The guide wire port 421 is connected to the guide wire cavity 422. A contrast ring 49 is installed on one side of the suction conduit 43 near the tip tube 44. The outer surfaces of the suction conduit 43 and the tip tube 44 are coated with an innovative super-slippery anti-coagulation coating. A sealing connector 48 is fixedly installed on the side of the W valve body 42.

[0045] The guidewire lumen 422 is compatible with standard guidewires, enabling rapid percutaneous intervention. The imaging ring 49 allows the surgeon to clearly locate the relative position of the catheter tip and the thrombus via X-ray during the procedure. The innovative ultra-slippery anticoagulant coating greatly reduces the frictional resistance between the aspiration catheter and the tip tube 44 when transported in tortuous blood vessels, improving the smoothness of delivery. The anticoagulant function effectively prevents the formation of new thrombi on the outer wall of the catheter and in the aspiration lumen, avoiding tubing blockage and ensuring the continuous and effective progress of the procedure.

[0046] Specifically, refer to Figure 5 and Figure 6 As shown, the suction conduit 43 has several main pipes 9 inside, which are connected to the multi-pass plate 3. The outer surface of the main pipes 9 is provided with spray holes 7 corresponding to the positions of the spray nozzles 46.

[0047] The internal main tube 9 is made of 304 stainless steel. It accurately delivers high-pressure saline solution to the head nozzle 46 through an independent cavity, achieving isolation between the delivery pipeline and the suction circuit, preventing interference between them, and ensuring the stability of the injection pressure and suction negative pressure.

[0048] In one implementation method: Medical staff connect the saline bag 2 to the inlet port of the pressurizing pump body 1. The multi-port plate 3 acts as a fluid distribution hub here. The pressurizing power module 5 is activated to guide the flushing fluid from the saline bag to the pump chamber of the pressurizing pump body 1. The fluid is then fed into the main pipe 9 in the aspiration catheter module 4 through the multi-port plate 3. The Luer connector 41 is connected to the connecting pipe leading out from the multi-port plate 3 to achieve a quick and sealed connection between the fluid path in the multi-port plate 3 and the aspiration catheter module 4. A standard guidewire is inserted through the guidewire port 421. The guidewire travels along the guidewire cavity 422 inside the W valve body 42 and exits from the tip tube 44. The aspiration catheter 43 and its distal tip 44 are inserted through the vascular puncture site into the target thrombus area, guided by a guidewire. The outer surface of the distal tip 44 of the aspiration catheter 43 is coated with an innovative ultra-slippery anticoagulant coating, which greatly reduces friction with the vessel wall, prevents damage to the vessel intima during advancement, and inhibits the formation of new thrombi outside the catheter. Under X-ray fluoroscopy, guided by a contrast ring 49, the aspiration catheter 43 and its tip 44 are advanced through the vessel to the target thrombus location. The jet port 46 and the aspiration port 47 of the tip 44 are precisely positioned on the thrombus segment. After positioning, the guidewire is withdrawn.

[0049] An ultrasonic generator is connected to a transducer via wires. The external ultrasonic generator provides a high-frequency electrical signal to the tubular ceramic tube ultrasonic transducer 45 through the wires. The transducer generates a 360-degree annular radiating ultrasonic energy field within the blood vessel surrounding the tip tube 44. The piezoelectric ceramic inside the tube generates high-frequency vibrations, inducing a violent cavitation effect and acoustic flow in the surrounding liquid medium. The purpose is to use the shear force and shock wave generated by the bursting of cavitation bubbles to loosen the fibrin skeleton of the thrombus from the inside, pre-fragmenting large thrombi into smaller fragments that are easy to flush away. At the same time, the acoustic flow effect enhances drug diffusion, performing preliminary loosening and cavitation treatment on the thrombus. A temperature sensor provides real-time feedback, and the rotation speed of the pressurization power module 5 is set according to the thrombus properties to determine the frequency and pressure of the pulse jet.

[0050] The pulsed saline solution is generated by the pressurization power module 5, which creates a pulsed positive pressure in the pressurization pump body 1. The saline solution enters the multi-port plate 3 from the saline bag 2 through the pressurization pump body 1. Under the pulsed pressure, it is forced into the distribution chamber of the multi-port plate 3 and then into multiple main tubes 9 in the wall of the aspiration catheter 43. The main tubes 9 extend to the vicinity of the tip tube 44. The jet hole 7 at the end of the tip tube 44 is precisely aligned with the two 45-degree angled jet ports 46 on the tip tube 44. The pulsed saline solution is ejected from the two jet ports 46 at a 45-degree angle at a certain frequency and pressure, forming a pulsating jet. The pulsating jet directly impacts the thrombus that has been loosened by ultrasound. Its cyclical pressure produces a kneading and peeling effect on the thrombus, breaking it into microparticles layer by layer. The 45-degree angle of the jet ports 46 ensures that the jet mainly acts on the thrombus rather than vertically impacting the blood vessel wall, maximizing the protection of the fragile diseased blood vessel while ensuring the efficiency of thrombus fragmentation.

[0051] During the back suction process of the pressurized power module 5, the back suction port 47 located outside the tip tube 44 will recover and suck up the blood mixture containing thrombus fragments that will be flushed down. Under the combined action of jet thrust and negative pressure suction, it enters the main cavity of the suction catheter 43, returns along the catheter, passes through the W valve body 42, Luer connector 41, and connecting tube to reach the multi-pass plate 3, and finally is discharged into the waste liquid bag 6.

[0052] Specifically, refer to Figure 8 As shown, a pump rod 8 is slidably connected inside the pressurized pump body 1, and a pressurized power module 5 for driving the pump rod 8 is provided on the outer surface of the pump rod 8.

[0053] The part of the pump rod 8 that enters the pump body is made of 304 stainless steel, and the head end is made of nylon.

[0054] Instead of the traditional method of transmitting pressure through a hose using an external pressure pump, this device uses a power module to directly drive the pump rod 8, ensuring precise control and stable output of the injection pressure. This fundamentally solves the problem of large pressure fluctuations and the tendency for instantaneous high pressure to impact blood vessels that are common with traditional devices.

[0055] Specifically, refer to Figure 8 As shown, the pressurization power module 5 includes a support frame 51, a servo motor 52, a crank 53, a slider 54, a consumable chuck 55, and a base 56. The servo motor 52 is mounted on the surface of the support frame 51, and a turntable is fixedly mounted on the output end of the servo motor 52.

[0056] The servo motor 52 outputs rotational power through the turntable. The large diameter design of the turntable increases the torque of the power output, ensuring that the pump rod 8 can operate smoothly even under high pressure.

[0057] Specifically, refer to Figure 8 As shown, a crank 53 is rotatably connected to one side of the turntable at an eccentric position. A consumable chuck 55 is rotatably connected to one end of the crank 53. A slider 54 is slidably connected to one side of the consumable chuck 55. The slider 54 is fixedly installed on the surface of the support frame 51.

[0058] The rotary motion of the servo motor 52 is converted into the linear reciprocating motion of the pump rod 8, which has high transmission efficiency, simple and compact structure, smooth operation and low noise, making it very suitable for medical surgical scenarios.

[0059] Specifically, refer to Figure 8 As shown, a base 56 is placed on the surface of the support frame 51. The base 56 can be connected to the consumable clamp 55 by bolts. The pump rod 8 is clamped and installed between the base 56 and the consumable clamp 55.

[0060] By using the base 56, consumable clamp 55 and bolts for clamping, the replacement and installation of the one-time pressure pump body 1 can be completed quickly, which greatly shortens the surgical preparation time, improves surgical efficiency, and avoids the risk of cross-infection.

[0061] As one implementation method,

[0062] In use, the pump rod 8 of the pressurizing pump body 1 is inserted into the pressurizing power module 5. Specifically, the base 56 is locked to the consumable clamp 55 with bolts, which together hold the end of the pump rod 8. When the servo motor 52 is started to rotate, the crank 53 is driven to move through the eccentric shaft on the turntable. The other end of the crank 53 drives the consumable clamp 55 to move linearly back and forth along the slider 54, thereby driving the pump rod 8 to make piston movement in the pressurizing pump body 1. The rotational motion of the motor is converted into the linear pulse motion of the pump rod 8, generating a pulsed liquid flow with controllable frequency and stroke. The pressurizing power can be controlled by the program to control the motion frequency, thereby controlling the pressure.

[0063] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0064] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A thrombus aspiration catheter device based on ultrasound-assisted thrombolysis, comprising a pressure pump body (1), a saline bag (2) connected to the side of the pressure pump body (1), and a multi-port plate (3) fixedly installed on the side of the pressure pump body (1) and above the saline bag (2), characterized in that: One side of the multi-pass plate (3) is connected to a connecting pipe, and the other side of the connecting pipe is equipped with a suction conduit module (4). The aspiration catheter module (4) includes a Luer connector (41) installed at one end of the connecting tube. A W valve body (42) is fixedly installed at the end of the Luer connector (41). The surface of the W valve body (42) is conical. An aspiration catheter (43) is fixedly installed on one side of the tip of the W valve body (42). A tip tube (44) is installed at the other end of the aspiration catheter (43). The tip tube (44) includes several ultrasonic transducers (45). Two spray ports (46) for spraying physiological saline are opened on the tip tube (44) and near the ultrasonic transducers (45). A return port (47) for absorbing thrombi is opened near the outer side of the tip tube (44). The surface of the pressurizing pump body (1) is provided with a pressurizing power module (5) that provides power.

2. The thrombus aspiration catheter device based on ultrasound-assisted thrombolysis according to claim 1, characterized in that: The saline bag (2) is connected to the spray nozzle (46), the multi-pass plate (3) is connected to the waste liquid bag (6) through the bottom pipe, the return port (47) is connected to the waste liquid bag (6), and the opening slope of the spray nozzle (46) is forty-five degrees.

3. The thrombus aspiration catheter device based on ultrasound-assisted thrombolysis according to claim 1, characterized in that: The ultrasonic transducer (45) includes a positive electrode and a negative electrode, and a temperature sensor disposed between the positive electrode and the negative electrode. The ultrasonic transducer (45) is a tubular ceramic tube. Both the positive electrode and the negative electrode are electrically connected to an external ultrasonic generator through wires.

4. The thrombus aspiration catheter device based on ultrasound-assisted thrombolysis according to claim 1, characterized in that: One end of the W valve body (42) is fixedly installed with a guide wire port (421). The inside of the suction conduit (43) is provided with a guide wire cavity (422). The guide wire port (421) is connected to the guide wire cavity (422). A contrast ring (49) is installed on one side of the suction conduit (43) near the tip tube (44). The outer surfaces of the suction conduit (43) and the tip tube (44) are coated with an innovative super-slippery anticoagulant coating. A sealing connector (48) is fixedly installed on the side of the W valve body (42).

5. A thrombus aspiration catheter device based on ultrasound-assisted thrombolysis according to claim 1, characterized in that: The suction conduit (43) has several main tubes (9) inside, which are connected to the multi-pass plate (3). The outer surface of the several main tubes (9) is provided with spray holes (7) corresponding to the position of the spray port (46).

6. The thrombus aspiration catheter device based on ultrasound-assisted thrombolysis according to claim 1, characterized in that: The pump body (1) is internally slidably connected to a pump rod (8), and the outer surface of the pump rod (8) is provided with a pressurizing power module (5) for driving it.

7. A thrombus aspiration catheter device based on ultrasound-assisted thrombolysis according to claim 6, characterized in that: The pressurization power module (5) includes a support frame (51), a servo motor (52), a crank (53), a slider (54), a consumable chuck (55), and a base (56). The servo motor (52) is mounted on the surface of the support frame (51), and a turntable is fixedly mounted on the output end of the servo motor (52).

8. A thrombus aspiration catheter device based on ultrasound-assisted thrombolysis according to claim 7, characterized in that: A crank (53) is rotatably connected to one side of the turntable at an eccentric position. A consumable chuck (55) is rotatably connected to one end of the crank (53). A slider (54) is slidably connected to one side of the consumable chuck (55). The slider (54) is fixedly installed on the surface of the support frame (51).

9. A thrombus aspiration catheter device based on ultrasound-assisted thrombolysis according to claim 8, characterized in that: A base (56) is placed on the surface of the support frame (51). The base (56) can be connected to the consumable clamp (55) by bolts. The pump rod (8) is clamped and installed on the base (56) and the consumable clamp (55).

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