Jet flow plug breaking device with adjustable water flow direction

Abstract

The invention discloses a jet flow thrombus breaking device with an adjustable water flow direction, and relates to the technical field of medical apparatus and instruments, the jet flow thrombus breaking device comprises a thrombus taking catheter, a flow guiding device, a flow guiding device and a flow guiding device, the flow guide assembly is rotatably arranged in the flow guide device cavity, and the flow guide assembly comprises a flow guide plate and an adjusting mechanism used for adjusting the space posture of the flow guide plate; and a handle. Through the rotatable flow guide assembly and the angle-adjustable flow guide plate, flexible and accurate control over the high-pressure water flow direction is achieved. The limitation of water flow in the fixed direction is fundamentally broken through, the water flow can be reflected to the side wall of the blood vessel and any angle in the circumferential direction, and dead-angle-free covering and efficient breaking of wall-attached thrombus and long-section thrombus are achieved. In combination with adjacent negative pressure suction, a closed loop of immediate suction after breaking is formed, the thrombus breaking range is remarkably expanded, and the escape phenomenon of thrombus fragments is fundamentally eradicated.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a jet thrombus fragmentation device with adjustable water flow direction. Background Technology

[0002] Intravascular thrombosis is a major cause of critical illnesses such as acute myocardial infarction and stroke. Physical thrombectomy techniques are crucial for quickly opening blocked blood vessels. Among these techniques, jet thrombectomy devices, as highly efficient interventional instruments, use a catheter to spray high-pressure water into the thrombus, breaking it up before supplementing with negative pressure aspiration for rapid removal. These devices have attracted considerable attention due to their direct operation and rapid action.

[0003] Existing jet thrombectomy devices typically include a thrombectomy catheter, a high-pressure water source, and a negative pressure source. The catheter contains isolated suction and high-pressure water channels. High-pressure water is pumped in from the proximal end of the catheter and ejected from the distal outlet to impact the thrombus. The fragmented thrombus is then suctioned out of the body through the suction channels.

[0004] However, the outlet direction of such existing devices is usually fixed. This results in a limited water jet range, making it difficult to effectively treat mural thrombi attached to the sidewalls of blood vessels or diffuse thrombi blocking long lumens. During surgery, residues often remain because the water flow cannot cover all thrombi, which not only reduces the efficiency of thrombus fragmentation but also increases the risk of thrombus fragments detaching and escaping, causing secondary embolism in downstream vessels. Therefore, we propose a jet thrombus fragmentation device with adjustable water flow direction. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned in the background art regarding the limited thrombus fragmentation range, difficulty in effectively removing wall-attached thrombi and long thrombi, and high risk of thrombus escape in existing jet thrombus fragmentation devices due to their fixed water flow outlet direction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A jet thrombus breaking device with adjustable water flow direction, comprising: The thrombectomy catheter has internally isolated suction channels, high-pressure water flow channels, and flow guiding device chambers; A flow guiding assembly is rotatably disposed within the cavity of the flow guiding device. The flow guiding assembly includes a flow guiding plate and an adjustment mechanism for adjusting the spatial attitude of the flow guiding plate. The high-pressure water flow channel forms a 30° deflection in the distal region of the thrombectomy tube, so that its outlet faces the flow guiding plate. A handle is attached to the proximal end of the thrombectomy catheter; The outlet of the high-pressure water flow channel is oriented toward the guide plate. The proximal ends of the high-pressure water flow channel and the suction channel are configured to be connected to a high-pressure water flow pump and a negative pressure source, respectively. The high-pressure water flow pump is configured to provide a continuous water flow mode, a pulse water flow mode, or a manual control mode. The negative pressure source includes a negative pressure suction pump and is configured to be able to adjust the negative pressure. In the initial state where the adjustment mechanism is not driven, the surface of the guide plate forms an angle or faces the outlet of the high-pressure water flow channel, so that the water flow is reflected towards the suction port area of ​​the suction channel.

[0007] Preferably, the flow guiding assembly further includes a rotation control component for driving the entire flow guiding assembly to rotate around the thrombectomy catheter.

[0008] Preferably, the adjustment mechanism is a balloon driving mechanism, which includes a balloon structure and a balloon inflation tube communicating with the balloon structure. The balloon structure is disposed on one side of the guide plate, and the inflation and deflation of the balloon structure directly act on the guide plate to drive it to rotate around the axis.

[0009] Preferably, the balloon structure is a compliant or semi-compliant balloon.

[0010] Preferably, the adjusting mechanism is a wire pulling mechanism, which includes a regulating wire, a pulling control component, a connecting shaft, and a base plate. The connecting shaft connects the base plate and a rotation control component, and has a cavity inside. The base plate is connected to the guide plate via a rotating shaft. One end of the regulating wire is connected to the side of the guide plate away from the outlet of the high-pressure water flow channel, and the other end passes through the cavity inside the base plate and the connecting shaft in sequence, and is connected to the pulling control component. The regulating wire is made of ultra-elastic nickel-titanium alloy or ultra-high molecular weight polyethylene material.

[0011] Preferably, the distal end of the thrombectomy catheter has an aspiration port and a guide wire hole that communicate with the aspiration channel. The aspiration port is located on the side of the distal end of the thrombectomy catheter, or at the farthest end of the thrombectomy catheter and is a beveled, wedge-shaped, or straight opening.

[0012] Preferably, when the suction port is located at the farthest end of the thrombectomy conduit, the deflector is configured to reflect the water flow from the high-pressure water flow channel toward the central region of the suction port.

[0013] Preferably, the handle includes a catheter seat fixedly connected to the proximal end of the thrombectomy catheter, and multiple fluid connectors that are in fluid communication with the flow guiding device cavity, the suction channel and the high-pressure water flow channel, respectively.

[0014] Preferably, the deflector is made of metal or polymer material.

[0015] Preferably, the outlet of the high-pressure water flow pump, the guide plate, and the suction port of the suction channel are configured in a coordinated manner, so that the thrombus fragments formed by the high-pressure water flow can be immediately sucked into the suction port to form an instantaneous crushing and suction.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The jet thrombectomy device with adjustable water flow direction provided in this application can reflect high-pressure water flow to the sidewall of the blood vessel or any angle around the vessel through a rotatable and adjustable guide plate, so as to achieve precise and blind-angle fragmentation of wall thrombi and long thrombi, and solve the fundamental problem of fixed water flow direction and limited fragmentation range in the prior art.

[0017] High-pressure water flow directly breaks up large thrombi near the suction port, and the fragments are immediately extracted with the help of the adjacent negative pressure suction port, forming a closed-loop workflow of breaking up and suctioning immediately. This fundamentally avoids the risk of thrombus fragments escaping to downstream blood vessels with the blood flow after they loosen.

[0018] The deflector acts as a buffer, converting the direct impact of the high-pressure water jet into a reflected or deflected shear flow, effectively dispersing and reducing the impact of the water flow on the fragile blood vessel wall. At the same time, the pulsed water flow mode further reduces the continuous impact on the blood vessel, significantly improving the safety of the operation.

[0019] By specifically utilizing the reflected water flow to directly impact large or old blood clots blocking the suction port, the catheter can be quickly cleared and suction function restored, overcoming the shortcomings of traditional negative pressure suction catheters that are easily blocked, leading to surgical failure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments 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.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of the present invention.

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of the longitudinal section structure of the embolic removal catheter.

[0023] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the far end of the flow guiding component at point A.

[0024] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the proximal end of the flow guiding component at point B.

[0025] Figure 5 This is a schematic diagram of the balloon drive mechanism in use according to Embodiment 1 of the present invention.

[0026] Figure 6 This is a schematic diagram of the balloon drive mechanism in use according to Embodiment 1 of the present invention.

[0027] Figure 7 This is a schematic diagram of the overall rotation of the flow guiding component for circumferential scanning in Embodiment 1 of the present invention.

[0028] Figure 8 This is a schematic diagram of the longitudinal cross-sectional structure of the distal end of the thrombectomy catheter in Embodiment 2 of the present invention.

[0029] Figure 9 For the present invention Figure 8 Enlarged schematic diagram of the far end of the flow guiding component at point C.

[0030] Figure 10 For the present invention Figure 8 Enlarged schematic diagram of the proximal end of the flow guiding component at point D.

[0031] Figure 11 This is a schematic diagram of the working state of the guide plate after its angle is changed by the pulling of the wire in Embodiment 2 of the present invention.

[0032] Figure 12 This is a schematic diagram showing the distal end of the thrombectomy catheter and the aspiration port of Embodiment 3 of the present invention, which are obliquely oriented.

[0033] Figure 13 For the present invention Figure 12 The diagram shows the working state of the catheter when it is used to treat a blood clot at the tip.

[0034] Figure 14 This is a schematic diagram of the distal end of the thrombectomy catheter and the aspiration port of Embodiment 3 of the present invention, which are wedge-shaped or straight.

[0035] Figure 15 For the present invention Figure 14 The diagram shows the working state of the catheter when it is used to treat a blood clot at the tip.

[0036] Figure number descriptions: 1. Thrombectomy catheter; 11. Suction channel; 12. High-pressure water flow channel; 13. Flow guiding device cavity; 14. Suction port; 15. Guide wire hole; 2. Flow guiding assembly; 21. Flow guiding plate; 211. Rotating shaft; 22. Balloon structure; 23. Balloon inflation tube; 24. Rotation control component; 25. Adjustment wire; 26. Traction control component; 27. Connecting shaft; 28. Base plate; 3. Handle; 31. Catheter seat; 32. Fluid connector; 321. First Luer connector; 322. Second Luer connector; 323. Third Luer connector; 4. High-pressure water flow pump; 5. Negative pressure source. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings.

[0038] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0039] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0040] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0041] Please see Figure 1-7 This embodiment provides a jet thrombus breaking device with adjustable water flow direction. It mainly consists of a thrombus-retrieving guide tube 1, a flow guiding assembly 2, a handle 3, a high-pressure water pump 4, and a negative pressure source 5. The thrombus-retrieving guide tube 1 is a multi-cavity tube, internally forming a mutually isolated suction channel 11, a high-pressure water flow channel 12, and a flow guiding device cavity 13. The proximal end of the high-pressure water flow channel 12 is connected to the handle 3, and it is arranged in a straight line along one side of the thrombus-retrieving guide tube 1. After reaching the distal end of the thrombus-retrieving guide tube 1, its direction deflects 180°, extending to the distal region near the suction port 14, with its outlet facing the guide plate 21. The proximal end of the flow guiding device cavity 13 is connected to the handle 3, and it is arranged in a straight line along one side of the suction port 14, extending to the proximal end of the suction port 14, and is coaxial with the end of the high-pressure water flow channel 12. The distal side of the thrombectomy catheter 1 is provided with a suction port 14 that communicates with the suction channel 11, and the distal face of the catheter is provided with a guide wire hole 15 for guiding the catheter forward through the guide wire.

[0042] The flow guiding assembly 2 is rotatably disposed within the flow guiding device cavity 13. The flow guiding assembly 2 includes a flow guiding plate 21, a base plate 28, a connecting shaft 27, a balloon structure 22, a balloon inflation tube 23, and a rotation control component 24. The flow guiding plate 21 is made of metal, such as stainless steel, or a polymer material, such as PEEK. The flow guiding plate 21 is connected to the base plate 28 on one side via a rotating shaft 211. The balloon structure 22 is disposed on the other side of the flow guiding plate 21 and the base plate 28. The balloon structure 22 is made of a compliant or semi-compliant material, and its outer diameter can be increased or decreased proportionally according to the inflation pressure. It is in fluid communication with the balloon inflation tube 23. The balloon inflation tube 23 passes through a cavity opened inside the base plate 28 and the connecting shaft 27, extending to its proximal end. The distal end of the connecting shaft 27 is fixedly connected to the base plate 28, and the proximal end is connected to the rotation control component 24. By rotating the rotation control component 24, the entire flow guiding assembly 2 can be driven to rotate around the axis of the thrombectomy catheter 1. When the balloon structure 22 is not inflated, the flow guiding plate 21 is in the first position, and its surface forms an angle with the outlet of the high-pressure water flow channel 12, so that the high-pressure water flow is partially reflected or directly directed towards the suction port 14 area.

[0043] The handle 3 is connected to the proximal end of the thrombectomy catheter 1, and includes a catheter seat 31 and multiple fluid connectors 32. The catheter seat 31 is fixedly connected to the proximal end of the thrombectomy catheter 1. The fluid connectors 32 are Luer connectors, including a first Luer connector 321, a second Luer connector 322, and a third Luer connector 323. The first Luer connector 321 communicates with the balloon inflation tube 23 for connecting an inflation pump (not shown in the figure); the second Luer connector 322 communicates with the suction channel 11 for connecting a negative pressure source 5; and the third Luer connector 323 communicates with the high-pressure water flow channel 12 for connecting a high-pressure water flow pump 4.

[0044] The high-pressure water pump 4 is connected to the third Luer connector 323 via a hose. The high-pressure water pump 4 has automatic and manual modes. In automatic mode, there are continuous water flow mode and pulsed water flow mode. In continuous water flow mode, pressing the start switch will cause the high-pressure water pump 4 to continuously inject high-pressure water into the thrombectomy tube 1. In pulsed water flow mode, pressing the start switch will cause the high-pressure water pump 4 to inject high-pressure water into the thrombectomy tube 1 at a certain frequency, for example, 1-10Hz. In manual mode, the timing of high-pressure water injection into the thrombectomy tube 1 can be controlled by a manual control switch.

[0045] The negative pressure source 5 consists of a hose with a negative pressure interface and an outlet, and a negative pressure suction pump. The negative pressure interface is connected to the second Luer connector 322 of the handle 3. The negative pressure of the negative pressure suction pump can be adjusted by a switch.

[0046] Example 2 Please see Figure 8-11 The main difference between this embodiment and Embodiment 1 lies in the adjustment mechanism of the guide plate 21.

[0047] In this embodiment, the adjustment mechanism is a wire pulling mechanism. This mechanism includes a regulating wire 25, a pulling control component 26, a connecting shaft 27, and a base plate 28. The guide plate 21 and the base plate 28 are connected in the middle via a rotating shaft 211. One end of the regulating wire 25 is connected to one side of the guide plate 21, and the other end passes through holes in the base plate 28 and a cavity inside the connecting shaft 27, finally connecting to the pulling control component 26 located at the proximal end. The connecting shaft 27 connects the base plate 28 and the rotation control component 24. The regulating wire 25 is made of superelastic nickel-titanium alloy or ultra-high molecular weight polyethylene, possessing good flexibility and fatigue resistance. By pulling or releasing the pulling control component 26, the angle of the guide plate 21 can be changed. When the regulating wire 25 is not pulled, the guide plate 21 is in the first position, i.e., the initial state, its surface being approximately parallel to or forming an acute angle with the outlet of the high-pressure water flow channel 12, causing the high-pressure water flow to be reflected or deflected towards the suction port 14 area.

[0048] Example 3 Please see Figure 12-15 This embodiment is a further optimization of the above embodiment, mainly in the position of the suction port 14 and the initial state of the guide plate 21. In this embodiment, the suction port 14 of the thrombectomy tube 1 is located at the farthest end of the tube. The suction port 14 can be constructed as an oblique opening, a wedge-shaped opening, or a straight opening. Correspondingly, the proximal end of the guide device cavity 13 is connected to the handle 3 and extends along the inside of the thrombectomy tube 1, with its distal end located near the suction port 14, coaxial with or corresponding to the outlet of the high-pressure water flow channel 12.

[0049] Accordingly, the guide plate 21 of the flow guiding assembly 2 is specially configured such that, when the adjustment mechanism is in an undriven state—for example, when the balloon structure 22 is not inflated or the control wire 25 is not pulled—its surface faces the outlet of the high-pressure water flow channel 12, ensuring that the high-pressure water flow ejected from the outlet is directly reflected towards the axial region of the suction port 14. This design allows the device to optimally solve the problem of clogging at the suction port 14 in its initial state.

[0050] Working principle First, guided by a guidewire, the distal end of the thrombectomy catheter 1 is advanced to the location of the lesion thrombus within the blood vessel. The negative pressure source 5 is then turned on and adjusted to a suitable negative pressure level via a switch, generating negative pressure through the suction channel 11 and suction port 14. For small or very fresh thrombi, they can be directly drawn into the suction port 14 and expelled from the body through the suction channel 11 under negative pressure.

[0051] If the thrombus is large, hard, or old and blocks the suction port 14, the high-pressure water pump 4 is activated. When dealing with hard or old thrombi, the pulse mode of the high-pressure water pump 4 can be activated to more effectively break up the thrombus through high-frequency water jet impact. At the same time, due to the intermittent impact rather than continuous high-speed water flow, the risk of hemoglobinuria can be significantly reduced.

[0052] High-pressure water is ejected at high speed from the outlet of the high-pressure water channel 12. Because the high-pressure water channel 12 is deflected 180° at its distal end, the water flow is directed towards the guide plate 21. If the guide plate 21 is in its initial state and the adjustment mechanism is not driven, the water flow will be reflected by the guide plate 21 towards the axial region of the suction port 14, directly impacting the large thrombus blocking the port and breaking it into smaller pieces. After the high-pressure water breaks the thrombus, the thrombus fragments are immediately captured and discharged by the negative pressure suction port 14, creating an immediate fragmentation and suction effect. This prevents the thrombus fragments from escaping with the blood flow to downstream blood vessels, thus preventing the formation of new thrombi. The broken thrombus is rapidly drawn in and discharged under negative pressure.

[0053] When it is necessary to observe mural thrombi on the sidewall of the blood vessel via angiography, or to treat thrombi in a specific location in front of the aspiration port 14, the adjustment mechanism is activated. In Embodiment 1, water is injected into the balloon structure 22 by an inflation pump to inflate it. The balloon structure 22 expands and pushes the guide plate 21 to rotate around the pivot 211, thereby changing its angle with the water flow direction. After the high-pressure water flow hits the lifted guide plate 21, its reflection angle also changes accordingly, directing it towards the sidewall of the blood vessel or other desired directions.

[0054] In Embodiment 2, when it is necessary to adjust the water flow direction, the traction control component 26 is pulled towards the proximal end, causing the control wire 25 to move towards the proximal end. The control wire 25 pulls the side connected to the guide plate 21, forcing the guide plate 21 to rotate around the rotating shaft 211, thereby changing the direction of water flow reflection. The remaining working principles, such as initial plug breaking and circumferential scanning, are similar to those in Embodiment 1.

[0055] The fragmented thrombus is carried to the vicinity of the suction port 14 and aspirated under the combined action of blood flow and negative pressure. To further expand the fragmentation area, the rotation control component 24 can be operated. This operation causes the entire diversion assembly 2 to rotate around the axis of the thrombectomy catheter 1. This allows the reflected high-pressure water jet to perform a 360° circumferential scan, enabling thrombectomy without dead zones on the inner wall of the blood vessel.

[0056] In Example 3, since the aspiration port 14 is located at the distal end of the catheter, and the guide plate 21 initially faces the direction of the high-pressure water flow, the water flow is reflected towards the axial region of the aspiration port 14, allowing for more direct treatment of thrombi blocking the front of the catheter. Throughout the process, the presence of the guide plate 21 prevents the high-pressure water flow from directly impacting the vessel wall. Its reflection effect weakens the water flow energy to some extent and transforms the concentrated impact force into a more dispersed shear force, significantly reducing the risk of damage to the vascular endothelium. Simultaneously, the immediate fragmentation and aspiration method greatly reduces the risk of thrombus fragment escape.

[0057] In summary, this invention effectively solves key problems of existing thrombectomy devices, such as thrombus escape, aspiration port blockage, and insufficient ability to treat wall-attached thrombi, by combining adjustable jet flow with negative pressure aspiration.

[0058] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A jet-type thrombus-breaking device with adjustable water flow direction, characterized in that, include: The thrombectomy catheter (1) has an internally isolated suction channel (11), a high-pressure water flow channel (12), and a flow guiding device cavity (13). The flow guiding assembly (2) is rotatably disposed in the flow guiding device cavity (13). The flow guiding assembly (2) includes a flow guiding plate (21) and an adjustment mechanism for adjusting the spatial attitude of the flow guiding plate (21). The high-pressure water flow channel (12) forms a 180° deflection in the distal region of the thrombectomy tube (1) so that its outlet is directly facing the flow guiding plate (21). Handle (3) is connected to the proximal end of the thrombectomy catheter (1); The outlet of the high-pressure water flow channel (12) is positioned facing the guide plate (21). The proximal ends of the high-pressure water flow channel (12) and the suction channel (11) are configured to be connected to a high-pressure water flow pump (4) and a negative pressure source (5), respectively. The high-pressure water flow pump (4) is configured to provide a continuous water flow mode, a pulse water flow mode, or a manual control mode. The negative pressure source (5) includes a negative pressure suction pump and is configured to be able to adjust the negative pressure. In the initial state where the adjustment mechanism is not driven, the surface of the guide plate (21) forms an angle or faces the outlet of the high-pressure water flow channel (12) so that the water flow is reflected towards the suction port (14) area of ​​the suction channel (11).

2. The jet thrombus breaking device with adjustable water flow direction according to claim 1, characterized in that: The flow guiding assembly (2) also includes a rotation control component (24) for driving the flow guiding assembly (2) to rotate around the axis of the thrombectomy catheter (1).

3. The jet thrombus breaking device with adjustable water flow direction according to claim 1, characterized in that: The adjustment mechanism is a balloon drive mechanism, which includes a balloon structure (22) and a balloon inflation tube (23) connected to the balloon structure (22). The balloon structure (22) is located on one side of the guide plate (21). The inflation and deflation of the balloon structure (22) directly act on the guide plate (21) to drive it to rotate around the axis (211).

4. A jet thrombus breaking device with adjustable water flow direction according to claim 3, characterized in that: The balloon structure (22) is a compliant or semi-compliant balloon.

5. A jet thrombus breaking device with adjustable water flow direction according to claim 1, characterized in that: The adjustment mechanism is a wire pulling mechanism, which includes a control wire (25), a pulling control component (26), a connecting shaft (27), and a base plate (28). The connecting shaft (27) connects the base plate (28) and a rotation control component (24), and has a cavity inside. The base plate (28) is connected to the guide plate (21) through a rotating shaft (211). One end of the control wire (25) is connected to the side of the guide plate (21) away from the outlet of the high-pressure water flow channel (12), and the other end passes through the cavity inside the base plate (28) and the connecting shaft (27) in sequence, and is connected to the pulling control component (26). The control wire (25) is made of superelastic nickel-titanium alloy or ultra-high molecular weight polyethylene material.

6. A jet thrombus breaking device with adjustable water flow direction according to claim 1, characterized in that: The distal end of the thrombectomy catheter (1) is provided with a suction port (14) and a guide wire hole (15) communicating with the suction channel (11). The suction port (14) is located on the side of the distal end of the thrombectomy catheter (1), or at the farthest end of the thrombectomy catheter (1) and is oblique, wedge-shaped or straight.

7. A jet thrombus breaking device with adjustable water flow direction according to claim 6, characterized in that: When the suction port (14) is located at the farthest end of the thrombectomy conduit (1), the guide plate (21) is configured to reflect the water flow from the high-pressure water flow channel (12) toward the central area of ​​the suction port (14).

8. A jet thrombus breaking device with adjustable water flow direction according to claim 1, characterized in that: The handle (3) includes a catheter seat (31) fixedly connected to the proximal end of the thrombectomy catheter (1), and multiple fluid connectors (32) that are in fluid communication with the flow guiding device cavity (13), the suction channel (11) and the high-pressure water flow channel (12), respectively.

9. A jet thrombus breaking device with adjustable water flow direction according to claim 1, characterized in that: The guide plate (21) is made of metal or polymer material.

10. A jet thrombus breaking device with adjustable water flow direction according to claim 1, characterized in that: The outlet of the high-pressure water pump (4), the guide plate (21), and the suction port (14) of the suction channel (11) are configured in a coordinated manner so that the thrombus fragments formed by the high-pressure water flow can be immediately sucked into the suction port (14) to form a process of immediate crushing and suction.

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