Thrombus aspiration catheter device

Abstract

The utility model relates to a kind of thrombus suction catheter device, comprising: catheter assembly, it includes suction pipe;Operating handle, including handle body and first handle unit, the handle body is connected with the suction pipe proximal end fixedly, the first handle unit is slidably connected with the handle body;Elastic member, its distal end is connected with the first handle unit, proximal end is connected with the handle body, so that the first handle unit relative to the handle body is moved to the proximal end when the elastic member is compressed.The operator of the utility model can perceive, judge the suction force size in suction catheter by operating handle, and then the suction strategy can be adjusted according to the suction force size, improve suction efficiency, reduce blood loss.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a thrombus aspiration catheter device. Background Technology

[0002] In the field of interventional vascular therapy, the core treatment goal for thromboembolic diseases (such as acute myocardial infarction, ischemic stroke, and deep vein thrombosis of the lower extremities) is to rapidly and safely remove thrombi from blood vessels and restore blood flow perfusion. Currently, thrombectomy catheters are key devices for achieving this goal. They create negative pressure at the distal end of the catheter to directly extract the thrombus from the blood vessel, offering advantages such as minimal invasiveness and rapid recovery. During the procedure, the operator advances the distal end of the catheter to the thrombus site, activates the negative pressure source, and uses continuous or intermittent aspiration to draw the thrombus into the catheter lumen and remove it from the body, thereby rapidly restoring blood flow. These devices are widely used in scenarios such as acute ischemic stroke (AIS), acute myocardial infarction (AMI), and pulmonary embolism (PE).

[0003] However, with current aspiration catheters, operators cannot perceive the suction force during operation. Either the suction force is insufficient, resulting in low efficiency in thrombus removal, or the suction force is too large, increasing the risk of blood loss and vascular damage. Utility Model Content

[0004] Based on this, it is necessary to provide a thrombus aspiration device to address the above problems, comprising: a catheter assembly including a suction tube; an operating handle including a handle body and a first handle unit, wherein the handle body is fixedly connected to the proximal end of the suction tube, and the first handle unit is slidably connected to the handle body; and an elastic element, the distal end of which is connected to the first handle unit and the proximal end of which is connected to the handle body, such that the elastic element is compressed when the first handle unit moves proximally relative to the handle body.

[0005] Furthermore, the handle body includes a second handle unit with a cavity, the first handle unit is slidably disposed in the cavity, one end of the elastic member abuts against the second handle unit, and the other end abuts against the first handle unit.

[0006] Furthermore, the upper and / or lower sidewalls of the cavity have a first protrusion or a first groove, and the upper and / or lower sidewalls of the outer periphery of the first handle unit have a first groove or a first protrusion that slides therewith; and / or, the proximal sidewall of the cavity has a first limiting member, and the proximal sidewall of the outer periphery of the first handle unit has a second limiting member, and the two ends of the elastic member are respectively connected to the first limiting member and the second limiting member.

[0007] Furthermore, the handle body also includes a connecting sleeve, the distal end of which is connected to the suction tube and the proximal end of which is connected to the second handle unit; it also includes a transmission rod disposed in the inner cavity of the connecting sleeve, the distal end of which is provided with an abutment portion and the proximal end of which is fixedly connected to the first handle unit, the elastic element being sleeved on the outer periphery of the transmission rod, the proximal end of which abuts against the second handle unit and the distal end of which abuts against the abutment portion.

[0008] Furthermore, it also includes a washer disposed on the distal side of the second handle unit, the transmission rod passing through the washer, and the proximal end of the elastic element abutting against the washer.

[0009] Furthermore, the washer is fixedly connected to the second handle unit, the inner side of the washer has a second protrusion or a second groove, and the outer periphery of the transmission rod is provided with a second groove or a second protrusion extending along the axis and cooperating with it.

[0010] Furthermore, the catheter assembly also includes an adjustment tube that is slidably sleeved on the outer periphery of the suction tube; it also includes a tapered adjustable suction port unit, the small-diameter end of which is connected to the distal end of the suction tube; when the adjustment tube slides relative to the suction tube, the adjustable suction port unit can retract into the adjustment tube, or unfold from the inside to the outside of the adjustment tube step by step.

[0011] Furthermore, the distal end of the regulating tube has a first developing element, and the distal end of the suction tube has a second developing element.

[0012] Furthermore, the distal inner cavity of the regulating tube has a tapered opening that extends outward from the distal end of the inner cavity of the regulating tube and whose inner diameter gradually increases.

[0013] Furthermore, the adjustable suction port unit includes at least one wave ring, and a membrane is provided on the outer and / or inner side of the wave ring, with the proximal end of the membrane being sealed to the distal end of the suction tube.

[0014] Furthermore, the adjustable suction port unit includes multiple wave coils, and adjacent wave coils are connected to each other by reinforcing rods.

[0015] Furthermore, it also includes a mounting ring and at least one connecting rod, the mounting ring being fixedly connected to the distal end of the suction tube; one end of the connecting rod being fixedly connected to the mounting ring, and the other end being fixedly connected to one of the wave coils.

[0016] Furthermore, it also includes an adapter, which includes an adapter body and a side branch connected to each other. One end of the adapter body is connected to the second handle unit or the connecting sleeve, and the other end is connected to the suction tube. The suction tube communicates with the side branch.

[0017] Furthermore, the first handle unit is provided with an indicator mark, and the second handle unit is provided with scale lines that cooperate with the indicator mark.

[0018] The technical solution of this utility model has the following beneficial effects:

[0019] The operating handle is equipped with two relative sliding second handle units and a first handle unit, with an elastic element between them. The operator can determine the suction force in the aspiration catheter by sensing the relative sliding distance between the second handle unit and the first handle unit, and thus adjust the aspiration strategy according to the suction force to improve aspiration efficiency and reduce blood loss. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the thrombus aspiration catheter device in the first embodiment;

[0021] Figure 2 This is a cross-sectional view of the thrombus aspiration catheter device in the first embodiment (with the adjustable aspiration port unit removed);

[0022] Figure 3 for Figure 2 The right view in the middle;

[0023] Figure 4 for Figure 2 AA section diagram;

[0024] Figure 5 This is a cross-sectional view of the washer in the first embodiment;

[0025] Figure 6 This is a partial structural diagram of the distal side of the thrombus aspiration catheter device in the first embodiment;

[0026] Figure 7 This is a partial structural diagram of the distal side of a thrombus aspiration catheter device in another embodiment;

[0027] Figure 8 This is a partial structural diagram of the distal side of a thrombus aspiration catheter device in yet another embodiment;

[0028] Figure 9 This is a partial cross-sectional view of the thrombus aspiration catheter device in the second embodiment;

[0029] Figure 10 This is a partial cross-sectional view of a thrombus aspiration catheter device in another embodiment. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "upper," "lower," "left," "right," and similar expressions used to indicate orientation are for illustrative purposes only and do not represent the only possible implementation.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] It should be noted that, for medical devices, the end of the medical device that is relatively closer to the operator is generally called the "proximal end," and the end that is relatively farther from the operator is called the "distal end." Based on this principle, the "proximal end" and "distal end" of any component of the delivery system are defined. "Proximal end" and "distal end" are only used to describe the orientation and do not refer to the end face of the proximal end or the end face of the distal end. "Axial axis" or "longitudinal axis" refers to the direction parallel to the line connecting the center of the distal end and the center of the proximal end of the medical device. "Radial axis" or "lateral axis" refers to the direction perpendicular to the axial direction.

[0034] First Embodiment

[0035] See Figure 1-3As shown, this embodiment provides a thrombus aspiration device 100. The aspiration device 100 includes a catheter assembly 20, with an adjustable aspiration port unit 30 connected to the distal end of the catheter assembly 20 and an operating handle 10 connected to the proximal end. The catheter assembly 20 includes a suction tube 22, and the operating handle 10 includes a handle body 10a and a first handle unit 12. The handle body 10a is fixedly connected to the proximal end of the suction tube 22, and the first handle unit 12 is slidably connected to the handle body 10a. The distal end of an elastic member 17 is connected to the first handle unit 12, and the proximal end is connected to the handle body 10a, such that the elastic member 17 is compressed when the first handle unit 12 moves proximally relative to the handle body 10a.

[0036] See also Figure 1-3 The thrombus aspiration device 100 is further described below. The catheter assembly 20 includes a suction tube 22 and an adjustment tube slidably sleeved around the periphery of the suction tube 22. The handle body 10a includes a second handle unit 13, a connecting sleeve 11, and an adapter 14 connected sequentially from proximal to distal. The proximal end of the suction tube 22 is connected to the adapter 14. The adapter 14 includes an adapter body 141 and a side branch 142 connected to each other. The adapter body 141 is the main tube, open at one end and closed at the other, meaning its inner length is shorter than its overall length. The side branch 142 is a branch tube connected to the side of the main tube and communicates with its inner lumen. The closed end (proximal end) of the adapter body 141 is fixedly connected to the connecting sleeve 11, and the open end is connected to the suction tube 22, thereby allowing communication between the suction tube 22 and the side branch 142. In actual use, negative pressure can be provided by the side branch 142 to achieve aspiration of the thrombus by the suction tube 122.

[0037] The second handle unit 13 is generally block-shaped, with its distal end fixedly connected to the connecting sleeve 11. The second handle unit 13 has an internal cavity 133, which is through-hole, extending through both the front and rear sides of the second handle unit 13, thus allowing both the front and rear sides of the cavity 133 to communicate with the outside. In other embodiments, the cavity may only be through-hole on the front or rear side, i.e., one side closed and the other open. The first handle unit 12 is also a block structure with a through-hole. The presence of this through-hole facilitates the operator's grip. For example, the operator's fingers can pass through the through-hole of the first handle unit 12 to grasp it. The shape of the first handle unit 12 matches the cavity 133, allowing the first handle unit 12 to slide axially within the cavity 133.

[0038] The connecting sleeve 11 is a hollow, axially extending sleeve structure, inside which a transmission rod 15 and an elastic element 17 are disposed. Specifically, one end of the transmission rod 15 is fixedly provided with an abutment portion 16, and the other end is provided with threads. After the proximal end of the transmission rod 15 passes through the first handle unit 12, it is threadedly connected to the first handle unit 12 by a nut 19. The transmission rod 15 and the abutment portion 16 can be threaded, integrally disposed, or welded. To achieve the positioning of the proximal end of the elastic element 17, a washer 18 is provided on the distal end of the second handle unit 13. The washer 18 can directly abut against the distal end face of the second handle unit 13, or be embedded in a groove on the distal end of the second handle unit 13. The inner diameter of the washer 18 is smaller than the inner cavity diameter D of the distal end of the second handle unit 13, thereby enabling the proximal end of the elastic element to abut against the washer 18, achieving reliable abutment between the elastic element 17 and the second handle unit 13, and ensuring that it contracts or elongates normally along the axial direction during deformation. In other embodiments, the washer 18 may be omitted. In this case, the inner cavity diameter D can be reduced to be smaller than the outer inner or outer diameter of the elastic element 17. In this case, the proximal side of the elastic element 17 directly abuts against the distal end face of the second handle unit.

[0039] See Figure 4 As shown, the transmission rod 15 has a second groove 151 extending axially on one or opposite side of its outer periphery. See also Figure 5As shown, the washer 18 includes a washer body 181 and an annular cavity 182 disposed in the central region of the washer body 181. A second protrusion 183, corresponding to the second groove 151, protrudes from the inner ring of the washer body 181 and extends along the center of the washer 18, protruding into the annular cavity 182. To allow the transmission rod 15 to pass smoothly through the washer 18 with the second protrusion 183, the second groove 151 extends axially towards the proximal end of the transmission rod 15. During installation, the second groove 151 and the second protrusion 183 are aligned, so that the transmission rod 15 passes through the washer 18 and the second protrusion 183 extends into the second groove 151. After the washer 18 is fixedly disposed on the proximal side of the second handle unit 13, due to the presence of the groove-protrusion structure, the transmission rod 15 can only slide relative to the washer 18 and cannot rotate, thus restricting the rotation of the transmission rod 15 through the washer 18. The above-described configuration prevents the transmission rod 15 from rotating during its interaction with the elastic element 17, thus avoiding loosening of the threaded connection between the transmission rod 15 and the first handle unit 12 and ensuring the stability of their connection. In other embodiments, the proximal end of the transmission rod 15 is integrally formed or welded to the first handle unit 12, while the abutment 16 is threadedly connected to the transmission rod 15. That is, one of the transmission rod 15, the second handle unit, and the abutment is non-detachable (welded or integrally formed), while the other is detachable threaded. The presence of the groove-protrusion structure also prevents loosening of the threaded connection between the abutment 16 and the transmission rod. In other embodiments, the second protrusion 183 can be provided on the transmission rod 15, while the second groove 151 can be provided on the washer 18; that is, the protrusion and groove can be interchanged, as long as they can cooperate to achieve limiting.

[0040] See also Figure 2As shown, the proximal end of the elastic element 17 abuts against the second handle unit 13 via a washer 18, while the distal end abuts against the holding member 16. The holding member 16 connects to the first handle unit 12 and transmits force via a transmission rod 15, so that when the first handle unit 12 moves proximally relative to the second handle unit 13, it compresses the elastic element 17. In this embodiment, the elastic element 17 is a helical cylindrical spring, a helical conical spring, or an elastic rod, and its stiffness coefficient (K) can be set according to actual needs. During the aspiration of the thrombus, the suction tube 22 is subjected to a distal reaction force F, which is transmitted through the suction tube 22 to the second handle unit 13 of the handle body 11a. Therefore, when the operator holds the first handle unit 12 still, the reaction force F pulls the second handle unit 13 distally, causing the second handle unit 13 to move relative to the first handle unit 12 and compress the elastic element 17. The greater the suction force, the greater the reaction force F, and the greater the compression of the elastic element 17. Therefore, the operator can sense the magnitude of the suction force of the suction catheter 22 in real time by grasping the first handle unit 12, thereby judging the thrombus aspiration operation status and adjusting the aspiration strategy in real time based on the sensed suction force to reduce blood loss during the aspiration process and improve aspiration efficiency. For better determination of the relative movement distance between the first handle unit 12 and the second handle unit 13, see [link to relevant documentation]. Figure 1 As shown, in this embodiment, an indicator mark 121 is provided on the first handle unit 12, and a scale line 131 that cooperates with the indicator mark 121 is provided on the second handle unit 13. By determining the specific position of the indicator mark on the scale line 131, the relative displacement between the first handle unit 12 and the second handle unit 13 can be accurately determined.

[0041] See Figure 6 The structure of the adjustable suction port unit 30 is described below. In its natural state (when not compressed), the adjustable suction port unit 30 is conical, with its small-diameter end (i.e., the end with the smallest diameter proximal to the end) connected to the distal end of the suction tube 22. The adjustable suction port unit 30 is elastically deformable; when the adjusting tube 21 slides relative to the suction tube 22, the adjustable suction port unit 30 can retract into the adjusting tube or gradually expand from the inside to the outside of the adjusting tube 21. The adjustable suction port unit 30 includes at least one corrugated coil 31, with a membrane 32 disposed on the outer and / or inner sides of the corrugated coil 31. The proximal end of the membrane 32 is sealed to the distal end of the suction tube 22. The corrugated coil 31 can be made of medical-grade stainless steel or a shape memory alloy such as nickel-titanium alloy, while the membrane is a biocompatible biomembrane, such as PET or PTFE. The membrane 32 ensures the transmission of suction force while maintaining the seal of the adjustable suction port unit 30, preventing thrombus escape. Furthermore, the membrane 32, when expanded, adheres better to the vessel wall, further preventing thrombus escape.

[0042] A mounting ring 24 is fixedly connected to the distal end of the suction tube 22, and the mounting ring 24 is connected to the wave coil 31 via a connecting rod 33. The connecting rod 33 extends along the coating, with one end connected to the mounting ring 24 and the other end connected to the wave coil 31. Thus, the connecting rod 33 and the wave coil 31 together form a framework supporting the coating 32, improving the structural strength of the coating 32 and the elastic deformation capability of the entire adjustable suction port unit 30. There may be one or more connecting rods 33; when multiple rods are used, they are spaced apart circumferentially. A first developing element 211 is located at the distal end of the adjusting tube 21, and a second developing element 221 is located at the distal end of the suction tube 22. By providing the first developing element 211 and the second developing element 221, the positions of the ends of the adjusting tube 21 and the suction tube 22 can be observed separately, and the relative positions between the adjusting tube 21 and the suction tube 22 can be easily observed, facilitating the determination of the deployment status of the adjustable suction port unit 30.

[0043] See Figure 7 As shown, in one embodiment, multiple corrugated rings 31 can be arranged along the axial direction, with the size of the corrugated rings gradually increasing from the proximal end to the distal end, thereby making the adjustable suction port unit 30 conical in shape. Since multiple corrugated rings 31 are provided, and some corrugated rings replace the connecting rod 33, there is no need to provide a mounting ring and a corresponding connecting rod structure.

[0044] See Figure 8 As shown, in another embodiment, when multiple wave coils 31 are provided, in order to enhance the overall strength of the wave coils 31, adjacent wave coils can be connected by reinforcing rods 34 between at least one wave crest or wave trough. Multiple reinforcing rods can be used to connect all or part of the wave crests or wave troughs between adjacent wave coils. Furthermore, to facilitate the adjustment of the tube 21 by fitting it onto the outside of the adjustable suction port unit 30 for adjusting its unfolded size, a tapered opening 212 is provided in the distal inner cavity of the tube 21. The tapered opening 212 extends outward from the distal end of the inner cavity of the tube 21, with its inner diameter gradually increasing.

[0045] Example 2

[0046] The thrombus aspiration device in this embodiment is basically the same as that in the first embodiment, except that the structure of the operating handle is different. In this embodiment, the elastic element is placed in the cavity of the second handle unit instead of in the connecting sleeve.

[0047] Specifically, see Figure 9As shown, an elastic element 17a is disposed in the cavity of the second handle unit 13a, such that one end of the elastic element 17a abuts against the second handle unit 13a and the other end abuts against the first handle unit 12a. With this arrangement, when the second handle unit 13a moves relative to the first handle unit 12a, the elastic element 17a is compressed, and the magnitude of the suction force is determined by sensing the amount of compression of the elastic element 17a. To position the elastic element 17a, a first limiting member 133 is provided on the proximal sidewall of the cavity of the second handle unit 13a, and a second limiting member 123 is provided on the proximal sidewall of the outer periphery of the first handle unit. Both ends of the elastic element 17a are connected to the first limiting member 133 and the second limiting member 123 respectively, thereby limiting the ends of the elastic element 17a and ensuring reliable contact between it and the second handle unit 13a and the first handle unit 12a. The first limiting member 133 or the second limiting member 123 can be configured as a protrusion or a groove. When configured as a protrusion, the outer circumference of the protrusion is smaller than the inner diameter of the elastic member 17a, allowing the protrusion to extend into the elastic member 17a for circumferential restraint. When configured as a groove, the elastic member 17a can be engaged within the groove structure.

[0048] Furthermore, the upper and / or lower sidewalls of the cavity of the second handle unit 13a have a first groove 132, and the upper and / or lower sidewalls of the outer periphery of the first handle unit 12a have a first protrusion 122 that slides with the first groove 132. By providing the first groove 132 and the first protrusion 122, it is ensured that when the second handle unit 13a moves relative to the first handle unit 12a, the first handle unit 12a moves along the first groove 132, thereby ensuring that the two will not deviate during movement, which would cause the sliding pair formed between them to fail or disengage. In other embodiments, the first groove 132 can also be provided on the first handle unit 12a and the first protrusion 122 can be provided on the second handle unit 13a. That is, the positions of the protrusion-groove structure described above can be interchanged, as long as the two form a sliding pair.

[0049] In other embodiments, see Figure 10 As shown, considering that the elastic element 17a can be placed in the cavity of the second handle unit 13a, the handle body does not need to include a connecting sleeve. Instead, the adapter 14 is directly fixedly connected to the second handle unit 13a. This arrangement simplifies the structure of the thrombus aspiration device, reduces the number of its parts, and lowers manufacturing and assembly costs.

[0050] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. The protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A thrombus aspiration catheter device, characterized in that, include: A catheter assembly, including a suction cannula; The operating handle includes a handle body and a first handle unit, wherein the handle body is fixedly connected to the proximal end of the suction tube, and the first handle unit is slidably connected to the handle body. An elastic element is connected at its distal end to the first handle unit and at its proximal end to the handle body, such that the elastic element is compressed when the first handle unit moves proximal to the handle body relative to the handle body.

2. The thrombus aspiration catheter device according to claim 1, characterized in that, The handle body includes a second handle unit with a cavity, the first handle unit is slidably disposed in the cavity, one end of the elastic member abuts against the second handle unit, and the other end abuts against the first handle unit.

3. The thrombus aspiration catheter device according to claim 2, characterized in that, The upper and / or lower sidewalls of the cavity have a first protrusion or a first groove, and the upper and / or lower sidewalls of the outer periphery of the first handle unit have a first groove or a first protrusion that slides therewith; and / or, the proximal sidewall of the cavity has a first limiting member, and the proximal sidewall of the outer periphery of the first handle unit has a second limiting member, and the two ends of the elastic member are respectively connected to the first limiting member and the second limiting member.

4. The thrombus aspiration catheter device according to claim 2, characterized in that, The handle body also includes a connecting sleeve, the distal end of which is connected to the suction tube and the proximal end of which is connected to the second handle unit; it also includes a transmission rod disposed in the inner cavity of the connecting sleeve, the distal end of which is provided with an abutment portion and the proximal end of which is fixedly connected to the first handle unit, the elastic element being sleeved on the outer periphery of the transmission rod, the proximal end of which abuts against the second handle unit and the distal end of which abuts against the abutment portion.

5. The thrombus aspiration catheter device according to claim 4, characterized in that, It also includes a washer disposed on the distal side of the second handle unit, the transmission rod passing through the washer, and the proximal end of the elastic element abutting against the washer.

6. The thrombus aspiration catheter device according to claim 5, characterized in that, The washer is fixedly connected to the second handle unit. The inner side of the washer has a second protrusion or a second groove. The outer periphery of the transmission rod is provided with a second groove or a second protrusion that extends along the axis and cooperates with it. The transmission rod is threadedly connected to the second handle unit and the abutment part, or the transmission rod is threadedly connected to one of the second handle unit and the abutment part, while the other is welded or integrally formed.

7. The thrombus aspiration catheter device according to claim 1, characterized in that, The catheter assembly also includes an adjustment tube that is slidably fitted around the periphery of the suction tube; it also includes a tapered adjustable suction port unit, the small-diameter end of which is connected to the distal end of the suction tube; when the adjustment tube slides relative to the suction tube, the adjustable suction port unit can retract into the adjustment tube, or expand outward from the adjustment tube step by step.

8. The thrombus aspiration catheter device according to claim 7, characterized in that, The distal end of the regulating tube has a first developing element, and the distal end of the suction tube has a second developing element.

9. The thrombus aspiration catheter device according to claim 7, characterized in that, The distal inner cavity of the regulating tube has a tapered opening that extends outward from the distal end of the inner cavity of the regulating tube and whose inner diameter gradually increases.

10. The thrombus aspiration catheter device according to claim 7, characterized in that, The adjustable suction port unit includes at least one wave ring, and a membrane is provided on the outer and / or inner side of the wave ring, with the proximal end of the membrane being sealed to the distal end of the suction tube.

11. The thrombus aspiration catheter device according to claim 10, characterized in that, The adjustable suction port unit includes multiple wave coils, and adjacent wave coils are connected to each other by reinforcing rods.

12. The thrombus aspiration catheter device according to claim 11, characterized in that, It also includes a mounting ring and at least one connecting rod, the mounting ring being fixedly connected to the distal end of the suction tube; one end of the connecting rod being fixedly connected to the mounting ring, and the other end being fixedly connected to one of the wave coils.

13. The thrombus aspiration catheter device according to claim 2 or 4, characterized in that, It also includes an adapter, which includes an adapter body and a side branch that are connected to each other. One end of the adapter body is connected to the second handle unit or the connecting sleeve, and the other end is connected to the suction tube. The suction tube communicates with the side branch.

14. The thrombus aspiration catheter device according to claim 2, characterized in that, The first handle unit is provided with an indicator mark, and the second handle unit is provided with scale lines that cooperate with the indicator mark.

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