Thrombus suction device for vascular surgery

Abstract

The utility model discloses a blood vessel surgery thrombus suction device which comprises a thrombus suction system, the thrombus suction system is connected with a suction pipeline, the suction pipeline comprises an inner pipeline, the outer side of the inner pipeline is sleeved with a metal net pipe, the outer side of the metal net pipe is wrapped with an outer pipeline, and the inner pipeline and the outer pipeline are communicated with each other. The tail end of the metal net tube is fixedly connected with an anti-falling structure, the anti-falling structure comprises a plurality of metal wires welded to the tail end of the metal net tube, and a metal wire ring is jointly welded to the ends, away from the metal net tube, of the metal wires. Especially when large and hard thrombus cannot enter the suction pipeline, the thrombus is taken out by sucking the student into the anti-falling knot and pulling out the suction blood vessel, and the structure formed by the inclined metal wire or the bent part can prevent the student from falling off in the traction process, so that the reliability of thrombus suction is ensured.

Description

Technical Field

[0001] This utility model relates to the field of thrombus aspiration technology, specifically a vascular surgical thrombus aspiration device. Background Technology

[0002] A thrombus is a small mass that forms on the surface of a blood vessel in the cardiovascular system at a site of rupture or repair. In variable fluid-dependent thrombosis, thrombi consist of insoluble, deposited platelets, accumulated white blood cells, and trapped red blood cells. Thrombosis is a multifactorial process involving the interaction and influence of a set of genetic and environmental factors. Common clinical characteristics of thrombosis patients include familial inheritance, recurrent episodes, severe symptoms, unusual thrombus formation sites, and a younger age of onset. Objective evidence is required to suspect arterial or venous thrombosis or thromboembolism. Angiography is the standard diagnostic tool, but skilled ultrasound examination can also be used to examine superficial vessels and the heart. In patients with spontaneous deep vein thrombosis confirmed by venography, 25%–50% of cases have a genetic predisposition. When a congenital defect in the anticoagulation mechanism is present (such as factor V anti-activated protein C, hyperhomocysteinemia, protein C deficiency, protein S deficiency, antithrombin deficiency, or impaired fibrinolysis), combined with a thrombotic stimulus (such as surgery, pregnancy, use of birth control pills, or antiphospholipid antibodies), venous thromboembolism can occur. Patients with a history of multiple thrombosis sites in the early stages experience a significantly increased frequency and severity of attacks compared to those with a single thrombus. Antithrombotic therapy utilizes thrombolytic drugs, antiplatelet drugs, and anticoagulants. Thrombolytic therapy should be considered first when developing an antithrombotic treatment strategy, as it can remove an existing thrombus. Antithrombotic treatment should be diversified, depending on whether the affected area is the venous or arterial circulation, the extent and location of vascular involvement, the spread of the thrombus, the risk of embolism or recurrence, and the relative benefits and risks of antithrombotic therapy versus bleeding. Existing vascular aspiration systems include a tube that extends into the blood vessel. When the end of the tube comes into contact with a thrombus, the vascular aspiration system draws air to create negative pressure inside the tube, thereby sucking out the thrombus.

[0003] Existing vascular aspiration systems lack anti-dislodgement structures in their tubing, making it prone to detachment after the thrombus is aspirated. This often necessitates multiple aspirations, resulting in low thrombus aspiration efficiency. Furthermore, for larger and harder thrombi, the tubing cannot effectively aspirate them, requiring multiple aspirations to complete the aspiration process. Utility Model Content

[0004] In view of the problems existing in a vascular surgical thrombus aspiration device, this utility model is proposed.

[0005] Therefore, the purpose of this invention is to provide a vascular surgical thrombus aspiration device that solves the problem that existing vascular aspiration systems lack anti-detachment structures in their tubing, which easily leads to the detachment of the thrombus after it has been aspirated, thus requiring multiple aspirations and resulting in low thrombus aspiration efficiency. Furthermore, for larger and harder thrombi, the tubing cannot effectively aspirate them, also requiring multiple aspirations to complete the thrombus aspiration.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0007] A vascular surgical thrombus aspiration device includes a thrombus aspiration system connected to an aspiration tube. The aspiration tube includes an inner tube, a metal mesh tube sleeved on the outside of the inner tube, an outer tube wrapped around the outside of the metal mesh tube, and an anti-detachment structure fixedly connected to the end of the metal mesh tube.

[0008] As a preferred embodiment of the vascular surgical thrombus aspiration device of this utility model, the anti-detachment structure includes multiple metal wires welded to the end of a metal mesh tube, and a metal wire ring is welded to the end of the multiple metal wires away from the metal mesh tube. Multiple obliquely placed metal wires are welded on the metal wire ring.

[0009] In a preferred embodiment of the vascular surgical thrombus aspiration device of this utility model, multiple oblique metal wires are evenly spaced and looped around a metal wire ring, and the ends of the multiple oblique metal wires away from the metal wire ring form a loop.

[0010] In a preferred embodiment of the vascular surgical thrombus aspiration device of this utility model, the ends of the multiple obliquely placed metal wires away from the metal wire loop form a ring with a diameter smaller than the diameter of the metal wire loop.

[0011] In a preferred embodiment of the vascular surgical thrombus aspiration device of this utility model, the anti-detachment structure includes multiple metal wires welded to the end of a metal mesh tube, the ends of the metal wires are bent to form bends, and the ends of the multiple bends form a ring.

[0012] In a preferred embodiment of the vascular surgical thrombus aspiration device of this utility model, the diameter of the annulus formed at the ends of the plurality of bent portions is smaller than the diameter of the metal wire loop.

[0013] Compared with existing technologies:

[0014] By setting up an anti-dislodgement structure, thrombi can be prevented from falling off, especially when larger and harder thrombi cannot enter the aspiration tube. In this case, the student is sucked into the anti-dislodgement knot, and the aspiration tube is pulled out to bring the thrombus out. Furthermore, the structure formed by the oblique metal wire or the bend can prevent the student from falling off during traction, ensuring the reliability of thrombus aspiration. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0016] Figure 2 A cross-sectional view of the suction pipe provided in Embodiment 1 of this utility model;

[0017] Figure 3 Provided for Embodiment 1 of this utility model Figure 2 A magnified view of a portion of the image;

[0018] Figure 4 An enlarged view of the metal wire loop and the obliquely placed metal wire provided in Embodiment 1 of this utility model;

[0019] Figure 5 Provided for Embodiment 1 of this utility model Figure 4 Side view;

[0020] Figure 6 A cross-sectional view of the suction pipe provided in Embodiment 2 of this utility model;

[0021] Figure 7 Provided for Embodiment 2 of this utility model Figure 6 A magnified view of a portion of the image.

[0022] In the diagram: 1. Thrombus aspiration system; 2. Aspiration tubing; 21. Outer tubing; 22. Inner tubing; 23. Metal mesh tubing; 3. Anti-detachment structure; 31. Metal wire; 31. Bending part; 32. Metal wire loop; 33. Angled metal wire. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] Example 1:

[0025] This utility model provides a vascular surgical thrombus aspiration device. Please refer to [link / reference]. Figure 1-5The system includes a thrombus aspiration system 1, which is connected to an aspiration pipe 2. The aspiration pipe 2 includes an inner pipe 22, and a metal mesh pipe 23 is sleeved on the outside of the inner pipe 22. An outer pipe 21 is wrapped around the outside of the metal mesh pipe 23. The above are existing structures of existing thrombus aspiration systems. The end of the metal mesh pipe 23 is fixedly connected to an anti-detachment structure 3.

[0026] The anti-detachment structure 3 includes multiple metal wires 3 welded to the ends of the metal mesh tube 23. The metal wires 3 are made of an elastic material, such as titanium alloy, and form a hollow cylindrical cavity to accommodate the thrombus. A metal wire loop 32 is welded to the ends of the multiple metal wires 31 furthest from the metal mesh tube 23. Multiple obliquely placed metal wires 33 are welded to the metal wire loop 32. The obliquely placed metal wires 33 are evenly spaced around the metal wire loop 32, and the ends of the obliquely placed metal wires 33 furthest from the metal wire loop 32 form a ring. The diameter of the ring formed by the ends of the obliquely placed metal wires 33 furthest from the metal wire loop 32 is smaller than the diameter of the metal wire loop 32. Therefore, when a thrombus is drawn into the anti-detachment structure 3, that is, when the thrombus enters the cavity formed by the metal wires 31, it is difficult for the thrombus to detach due to the obliquely placed metal wires 33.

[0027] In practical use, when the suction tube 2 moves within the blood vessel and contacts the thrombus at the end of the anti-detachment structure 3, the thrombus aspiration system 1 operates and generates negative pressure, causing the thrombus to enter the cavity formed by the metal wires 31. The thrombus is then aspirated under the continuous operation of the thrombus aspiration system 1. If the thrombus is too large or hard to enter the tube, the suction tube 2 is pulled outward to move the thrombus out. During the movement of the thrombus by the suction tube 2, the thrombus is not easily detached due to the oblique metal wires 33, thus ensuring the reliability of thrombus aspiration.

[0028] Example 2:

[0029] See attached document Figure 6-7 Unlike Embodiment 1, the anti-detachment structure 3 includes multiple metal wires 31 welded to the end of the metal mesh tube 23. The ends of the metal wires 31 are bent to form bends 311, and the ends of the multiple bends 311 form a ring.

[0030] The diameter of the ring formed at the ends of the multiple bends 311 is smaller than the diameter of the metal wire loop 32; at this time, the thrombus enters the cavity formed by each metal wire 31, and each bend 311 will deform under the compression of the thrombus, so that the ring formed by each bend 311 opens, and the thrombus can easily enter the cavity formed by each bend 311.

[0031] In practical use, when the suction tube 2 moves within the blood vessel and contacts the thrombus at the end of the anti-dislodgement structure 3, the thrombus aspiration system 1 operates and generates negative pressure, causing the thrombus to enter the cavities formed by the various metal wires 31. The thrombus is then aspirated out under the continuous operation of the thrombus aspiration system 1. If the thrombus is too large or hard to enter the tube, the suction tube 2 is pulled outward to move the thrombus out. During the movement of the thrombus by the suction tube 2, the thrombus is not easily dislodged due to the obstruction of the various bends 311, thus ensuring the reliability of thrombus aspiration.

[0032] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vascular surgical thrombus aspiration device, comprising a thrombus aspiration system (1), wherein the thrombus aspiration system (1) is connected to an aspiration tube (2), the aspiration tube (2) comprising an inner tube (22), a metal mesh tube (23) sleeved on the outer side of the inner tube (22), and an outer tube (21) wrapped around the outer side of the metal mesh tube (23), characterized in that: The end of the metal mesh tube (23) is fixedly connected with an anti-detachment structure (3).

2. The device according to claim 1, wherein The anti-detachment structure (3) includes multiple metal wires (31) welded to the end of the metal mesh tube (23). The ends of the multiple metal wires (31) away from the metal mesh tube (23) are welded together with a metal wire ring (32). Multiple oblique metal wires (33) are welded on the metal wire ring (32).

3. The extravascular surgical thrombectomy device of claim 2, wherein, Multiple inclined metal wires (33) are arranged at equal intervals on a metal wire ring (32), and the ends of the multiple inclined metal wires (33) away from the metal wire ring (32) form a ring.

4. The device according to claim 3, wherein The ends of the multiple inclined metal wires (33) away from the metal wire loop (32) form a loop with a diameter smaller than that of the metal wire loop (32).

5. The device according to claim 1, wherein The anti-detachment structure (3) includes multiple metal wires (31) welded to the end of the metal mesh tube (23). The ends of the metal wires (31) are bent to form bends (311), and the ends of the multiple bends (311) form a ring.

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