Thrombus aspiration thrombolysis protection device

Abstract

The invention discloses a thrombus aspiration and thrombolysis protection device, which comprises a tube body used for being placed in a blood vessel to treat thrombus; the infusion device is used for infusing thrombolysis medicine into the blood vessel for thrombolysis; the suction device is used for extracting the dissolved thrombus from the blood vessel; the protection device is arranged on the other side of the thrombus to collect the thrombus; the suction device comprises a box body, a connecting box and a piston plate; an air outlet is formed in the side wall of the box body, a suction port is formed in the bottom of the box body, a connecting port is formed in the top of the box body, a connecting pipe communicated with the air outlet and the connecting port is arranged in the box body, an opening corresponding to the suction port is formed in the bottom of the connecting pipe, and a baffle is arranged in the connecting pipe and rotationally connected into the connecting pipe; when the piston plate moves towards the direction of the connecting port, the baffle closes the opening; when the piston plate moves away from the connector, the baffle closes the air outlet; a supporting plate is arranged on the connecting box and is as high as the first push plate; one-hand operation can be achieved, and therefore the infection risk is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a thrombus aspiration and thrombolysis protection device. Background Art

[0002] At present, the treatment methods for thrombotic diseases mainly include conservative drug treatment and surgical treatment. Conservative drug treatment mainly includes anticoagulant therapy, which aims to reduce mortality, recurrence rate and post-thrombotic syndrome, but anticoagulant therapy is slow to take effect, difficult to completely dissolve blood clots, and has a high risk of bleeding. Surgical treatment mainly includes traditional surgical operations and intravascular interventional surgical treatment. As a traditional surgical operation, vascular incision and thrombectomy is basically not adopted in clinical practice due to its drawbacks of large trauma, slow postoperative recovery and many complications. With the development of medical imaging technology, intravascular interventional treatment has become the main surgical method for thrombotic diseases with small trauma, fast recovery and good effect.

[0003] The commonly used interventional mechanical thrombectomy mainly involves inserting an aspiration catheter into the blood vessel, performing negative pressure aspiration on the thrombus through the aspiration catheter, sucking the thrombus out of the blood vessel, and thus restoring blood flow in the blood vessel. When treating thrombus, thrombus can easily escape and block other blood vessel branches, causing secondary blockage and other problems. The utility model patent with application number CN202222853526.7 discloses a thrombus suction and thrombolysis protection device, which includes: a tube body, a suction device, an infusion device and a protection device. The tube body has a distal end for extending into the blood vessel and a proximal end opposite to the distal end. The interior of the tube body has a suction channel and a thrombolysis channel; the suction device is connected to the suction channel through the suction port, and is used to suck thrombus from the blood vessel through the suction channel; the infusion device is connected to the thrombolysis channel through the drug inlet, and is used to inject thrombolytic drugs into the blood vessel through the thrombolysis channel for thrombolysis; the protection device includes a linear connecting component and a net basket connected to one end of the connecting component, the connecting component can drive the net basket to penetrate the suction channel and extend through the first opening at the distal end of the suction channel, and the other end of the connecting component can extend through the second opening at the proximal end of the suction channel, and the net basket is used to collect thrombus. The device can suck thrombus, perform thrombolysis and prevent thrombus escape.

[0004] However, during the operation, doctors need to handle many things and often cannot operate the suction device with both hands. However, the existing suction device cannot be pulled by one hand, so other people are needed to assist. The increase in the number of people will increase the risk of infection. Summary of the invention

[0005] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a thrombus aspiration and thrombolysis protection device.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a thrombus suction and thrombolysis protection device, comprising: a tube body, which is used to be placed in a blood vessel to treat the thrombus; an infusion device, which inputs thrombolytic drugs into the blood vessel for thrombolysis; a suction device, which extracts the dissolved thrombus from the blood vessel; a protection device, which is placed on the other side of the thrombus to collect the thrombus; the suction device comprises: a box body, which has a collection chamber; a connecting box, which is connected to the box body; a piston plate, which is arranged in the connecting box; a first push plate, which is connected to the piston plate; an air outlet is provided on the side wall of the box body, a suction port is provided at the bottom, and a connecting port is provided at the top; a connecting pipe connecting the air outlet and the connecting port is provided in the box body, an opening corresponding to the suction port is provided at the bottom of the connecting pipe, a baffle is provided in the connecting pipe, and the baffle is rotatably connected to the connecting pipe; when the piston plate moves toward the connecting port, the baffle closes the opening; when the piston plate moves away from the connecting port, the baffle closes the air outlet; a support plate is provided on the connecting box, and the height of the first push plate is the same.

[0008] Furthermore, the suction device also includes: a first connecting shaft, which is arranged on the baffle; a transmission wheel, which is arranged at one end of the first connecting shaft; a transmission rod, which cooperates with the transmission wheel for transmission; the first connecting shaft passes through the box body, and the transmission rod is slidably connected to the side wall of the box body.

[0009] Furthermore, the suction device also includes: a first connecting rod, connected to the transmission rod; a second push plate, arranged on the first connecting rod; the second push plate is located at the top of the connecting box, and the first push plate and the second push plate are respectively located on both sides of the support plate. When the first push plate and the second push plate are pushed relative to each other, the second push plate moves before the first push plate.

[0010] Furthermore, the suction device also includes: a movable rod, which is arranged on the support plate; a first protrusion, which is arranged on the movable rod; a first return spring, which is arranged on the movable rod; a first through groove is provided on the support plate, the movable rod is inserted into the first through groove, and one end of the first return spring is against the inner wall of the first through groove; a second through groove corresponding to the movable rod is provided on the first push plate, and a guide groove corresponding to the movable rod is provided on the second push plate, the side wall of the guide groove close to the support plate is inclined, and the side wall of the first protrusion close to the support plate is provided with an inclined surface.

[0011] Furthermore, a second return spring is provided on the piston plate, one end of which is against the inner wall of the connection box; a third return spring is provided on the second push plate, one end of which is against the support plate.

[0012] Furthermore, the suction device also includes: a mounting block, arranged on the box body; a stopper, arranged on the mounting block; a connecting spring, arranged on the stopper; a first movable groove is provided on the mounting block, the stopper is in the first movable groove, one end of the connecting spring is fixedly connected to the bottom of the first movable groove, and an inclined groove is provided on the side wall of the stopper close to the first push plate.

[0013] Furthermore, the first push plate is provided with a notch corresponding to the stopper and an active cavity communicating with the notch, a movable plate is provided in the active cavity, an extension plate is provided at the bottom of the movable plate, and the extension plate extends into the notch; a third push plate is provided on the movable plate, and the third push plate passes through the active cavity.

[0014] Furthermore, a second connecting rod is provided on the piston plate, a first sliding block is provided on the first push plate, a first sliding groove for the first sliding block to move is provided on the second connecting rod, a second protrusion is provided on the top of the box body, and a guide surface is provided on the second protrusion; a third through groove is provided on the first push plate, a groove is provided on the side wall of the third through groove, and a flap is rotatably connected in the groove.

[0015] Furthermore, a guide block is provided at the bottom of the box body, the top surface of the guide block is inclined, a through cavity communicating with the suction port is provided on the guide block, a discharge port is provided on the side wall of the connecting box, and a sealing plate for closing the discharge port is provided on the side wall of the connecting box.

[0016] Furthermore, a plurality of baffle rods are provided in the through cavity, a second connecting shaft is provided on the baffle plate, a connecting groove corresponding to the second connecting shaft is provided on the inner wall of the through cavity, a second sliding block is provided on the second connecting shaft, and a second sliding groove for movement of the second sliding block is provided on the inner wall of the connecting groove; the distance between the second connecting shaft and the side wall on one side of the baffle rod is greater than the distance between the second connecting shaft and the side wall on the other side of the baffle rod.

[0017] The invention is beneficial in that it provides a thrombus aspiration and thrombolysis protection device that can be operated with one hand and reduces the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0019] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0020] In the attached picture:

[0021] Figure 1 It is a schematic diagram of the structure of a thrombus aspiration and thrombolysis protection device in one embodiment of the present invention.

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the suction device of the thrombus aspiration and thrombolysis protection device in the illustrated embodiment.

[0023] Figure 3 for Figure 1 A cross-sectional view of the housing of the aspiration device of the thrombus aspiration and thrombolysis protection device in the illustrated embodiment.

[0024] Figure 4 for Figure 3 Enlarged view of point A in .

[0025] Figure 5 for Figure 1 A cross-sectional view of the mounting box of the aspiration device of the thrombus aspiration and thrombolytic protection device in the illustrated embodiment.

[0026] Figure 6 for Figure 1 A cross-sectional view of the movable rod of the aspiration device of the thrombus aspiration and thrombolytic protection device in the illustrated embodiment.

[0027] Figure 7 for Figure 6 Enlarged view of point B in .

[0028] Figure 8 for Figure 6 Enlarged view of point C in the figure.

[0029] Fig. 9 for Figure 1 A cross-sectional view of the second protrusion of the suction device of the thrombus aspiration and thrombolytic protection device in the illustrated embodiment.

[0030] Fig.10 for Fig. 9 Enlarged view of point D in .

[0031] Fig.11 for Figure 1 A cross-sectional view of the mounting block of the aspiration device of the thrombus aspiration and thrombolytic protection device in the illustrated embodiment.

[0032] Fig.12 for Fig.11 Enlarged view of point E in FIG.

[0033] Fig.13 for Fig.11 Enlarged view of point F in FIG.

[0034] Fig.14 for Figure 1 A cross-sectional view of the second connecting shaft of the aspiration device of the thrombus aspiration and thrombolytic protection device in the illustrated embodiment.

[0035] Fig.15 for Fig.14 Enlarged view of point G in .

[0036] The meanings of the reference numerals in the figures are as follows:

[0037] 100, tube body; 200, infusion device; 300, suction device; 301, box; 302, connection box; 303, installation box; 304, first push plate; 3041, first slider; 3042, second through groove; 305, second connecting rod; 306, support plate; 3061, first through groove; 307, second push plate; 3071, guide groove; 308, movable rod; 3081, first protrusion; 309, first connecting rod; 310, sealing plate; 311, guide block; 312, piston plate; 313, connecting tube ; 314, baffle; 315, second return spring; 316, movable plate; 3161, third push plate; 3162, extension plate; 317, transmission wheel; 318, transmission rod; 319, third slider; 320, third return spring; 321, first return spring; 322, flap; 323, second protrusion; 324, mounting block; 325, baffle; 3251, connecting spring; 326, baffle rod; 3261, second connecting shaft; 3262, second slider; 327, first connecting shaft; 400, protection device. DETAILED DESCRIPTION

[0038] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0039] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0040] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0041] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0042] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0043] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0044] like Figure 1-15 As shown, a thrombus aspiration and thrombolysis protection device includes a tube body 100, an infusion device 200, a suction device 300 and a protection device 400. The tube body 100 is used to be placed in a blood vessel to treat the thrombus; the infusion device 200 injects the thrombolytic drug into the blood vessel for thrombolysis; the suction device 300 extracts the dissolved thrombus from the blood vessel; and the protection device 400 is placed on the other side of the thrombus to collect the thrombus.

[0045] The suction device 300 includes a box body 301, a connecting box 302, a piston plate 312 and a first push plate 304; the box body 301 has a collecting chamber; the connecting box 302 is communicated with the box body 301; the piston plate 312 is arranged in the connecting box 302; the first push plate 304 is connected to the piston plate 312; an air outlet is arranged on the side wall of the box body 301, a suction port is arranged at the bottom, and a connecting port is arranged at the top. A connecting pipe 313 connecting the air outlet and the connecting port is arranged in the box body 301, an opening corresponding to the suction port is arranged at the bottom of the connecting pipe 313, a baffle 314 is arranged in the connecting pipe 313, and one end of the baffle 314 is rotatably connected to the connecting pipe 313; when the piston plate 312 moves toward the connecting port, the baffle 314 closes the opening; when the piston plate 312 moves away from the connecting port, the baffle 314 closes the air outlet; a support plate 306 is provided on the connecting box 302, and the first push plate 304 has the same height.

[0046] A first connecting shaft 327 is provided on the baffle 314, and a connecting hole corresponding to the first connecting shaft 327 is provided on the connecting pipe 313. Both ends of the first connecting shaft 327 pass through the box body 301, and both ends of the first connecting shaft 327 are respectively provided with transmission wheels 317. An installation box 303 is provided on the side wall of the box body 301, and the transmission wheel 317 is located in the installation box 303. A transmission rod 318 that cooperates with the transmission wheel 317 is also provided in the installation box 303, and the transmission rod 318 is slidably connected to the side wall of the box body 301; a first connecting rod 309 is provided on the transmission rod 318, and the first connecting rod 309 extends out of the installation box 303. The first connecting rod 309 is connected to the second push plate 307, and the second push plate 307 is placed on the top of the connecting box 302, and the first push plate 304 and the second push plate 307 are respectively located on both sides of the support plate 306.

[0047] A second return spring 315 is provided on the piston plate 312, one end of the second return spring 315 abuts against the inner wall of the connecting box 302, a second connecting rod 305 is provided on the piston plate 312, the second connecting rod 305 passes through the connecting box 302, and the first push plate 304 is connected to the second connecting rod 305; a third return spring 320 is provided on the second push plate 307, one end of the third return spring 320 abuts against the support plate 306.

[0048] A first through slot 3061 is provided on the support plate 306, a movable rod 308 is passed through the first through slot 3061, a first return spring 321 is provided on the movable rod 308, one end of the first return spring 321 is against the inner wall of the first through slot 3061, a first protrusion 3081 is provided on the movable rod 308, a side wall of the first protrusion 3081 close to the support plate 306 is provided with an inclined surface, a second through slot 3042 corresponding to the movable rod 308 is provided on the first push plate 304, a guide groove 3071 corresponding to the movable rod 308 is provided on the second push plate 307, and the guide groove 3071 is inclinedly arranged on the side wall close to the support plate 306.

[0049] A mounting block 324 is provided on the top of the box body 301, a first movable groove is provided on the mounting block 324, a stopper 325 is provided in the first movable groove, a connecting spring 3251 is provided at the bottom of the stopper 325, the bottom end of the connecting spring 3251 is fixedly connected to the bottom surface of the first movable groove, and an inclined groove is provided on the side wall of the stopper 325 close to the first push plate 304.

[0050] The first push plate 304 is provided with a notch corresponding to the stopper 325 and a movable cavity communicated with the notch, a movable plate 316 is provided in the movable cavity, an extension plate 3162 is provided at the bottom of the movable plate 316, and the extension plate 3162 extends into the notch; a third push plate 3161 is provided on the movable plate 316, and the third push plate 3161 passes through the movable cavity.

[0051] The first push plate 304 is provided with a first slider 3041, the second connecting rod 305 is provided with a first sliding groove for the first slider 3041 to move, the top of the box body 301 is provided with a second protrusion 323, and the second protrusion 323 is provided with a guide surface; the first push plate 304 is provided with a third through groove, and the side wall of the third through groove is provided with a groove, and a flap 322 is rotatably connected in the groove, and a torsion spring is connected to the flap 322 so that the flap 322 is always in contact with the inner wall of the groove.

[0052] A third slider 319 is provided at the bottom of the first push plate 304, and a third slide groove is provided on the top of the box body 301 for the third slider 319 to move. A damping layer is provided on the bottom of the third slide groove. The damping coefficient of the damping layer gradually decreases from one end of the damping layer close to the connecting box 302 to the end of the damping layer far from the connecting box 302, so that the piston plate 312 always moves at a stable speed.

[0053] A guide block 311 is provided at the bottom of the box body 301, the top surface of the guide block 311 is inclined, a through cavity communicated with the suction port is provided on the guide block 311, a discharge port is provided on the side wall of the connecting box 302, and a sealing plate 310 for closing the discharge port is provided on the side wall of the connecting box 302.

[0054] A plurality of baffles 326 are provided in the through cavity, a second connecting shaft 3261 is provided on the baffle 314, a connecting groove corresponding to the second connecting shaft 3261 is provided on the inner wall of the through cavity, a second slider 3262 is provided on the second connecting shaft 3261, and a second slide groove for movement of the second slider 3262 is provided on the inner wall of the connecting groove; the second slider 3262 and the second slide groove cooperate to limit the maximum flipping angle of the baffle 314, so that the plurality of baffles 314 close the through cavity when no force is applied, so as to prevent the thrombus from falling back from the suction port; the distance between the second connecting shaft 3261 and the side wall on one side of the baffle 326 is greater than the distance between the second connecting shaft 3261 and the side wall on the other side of the baffle 326.

[0055] When the suction device 300 is in use, it is only necessary to press the first push plate 304 and the second push plate 307 relative to each other with one hand. Due to the setting of the first protrusion 3081, the first protrusion 3081 is against the side wall of the second through groove 3042. Therefore, when the first push plate 304 and the second push plate 307 are pressed, the second push plate 307 will move before the first push plate 304, and the second push plate 307 drives the transmission rod 318 to move and drive the transmission wheel 317 to rotate, and the baffle 314 rotates to close the opening and open the air outlet; the guide groove 3071 moves to one end of the movable rod 308 and pushes the movable rod 308 to move, and the movable rod 308 moves so that the first protrusion 3081 is aligned with the second through groove 3042. At this time, the second push plate 304 and the second push plate 307 are A push plate 304 can move on the top surface of the box body 301, and the first push plate 304 drives the piston plate 312 to move to discharge the air in the connection box 302 from the air outlet; when the first push plate 304 passes the position of the second protrusion 323, the second protrusion 323 abuts on the flap 322 to push the flap 322 to rotate, and the second protrusion 323 passes through the third through groove; after the first push plate 304 moves to the stopper 325, it pushes the stopper 325 to move, and the first push plate 304 stops moving after passing the stopper 325, and the stopper 325 abuts on the extension plate 3162 to fix the first push plate 304, releasing the first push plate 304 and the second push plate 307, and the third return spring 320 pushes the second push plate 307 The second return spring 315 pushes the piston plate 312 to move back, and the piston plate 312 moves away from the connection port to generate negative pressure in the box body 301. When the thrombus enters the box body 301 from the through cavity, it pushes the baffle rod 326 to rotate. The eccentric setting of the second connecting shaft 3261 is used to make the baffle rod 326 flip toward the discharge port, and the thrombus is sucked into the box body 301. 01 is guided to the discharge port for collection; when cleaning the thrombus, the sealing plate 310 is moved to open the discharge port to discharge the thrombus in the box body 301; when the second reset spring 315 pushes the piston plate 312 to move back, the first push plate 304 passes over the second protrusion 323, and the flap 322 abuts against the second protrusion 323 to make the entire first push plate 304 move upward, and after the first push plate 304 passes over the second protrusion 323, the first push plate 304 falls back on the box body 301, and the first push plate 304 generates vibration to shake the movable plate 316 to the bottom of the movable cavity, so that the extension plate 3162 re-extends into the notch to complete the reset of the extension plate 3162.

[0056] The structures of the tube body 100, the infusion device 200 and the protection device 400 are the same as those of the thrombus aspiration and thrombolysis protection device in the prior art, and the overall use method of the present application is also the same as that of the thrombus aspiration and thrombolysis protection device in the prior art.

[0057] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A thrombus aspiration and thrombolysis protection device, comprising: The tube body is used to be placed in a blood vessel to treat thrombus; An infusion device that delivers thrombolytic drugs into blood vessels for thrombolysis; A suction device to extract dissolved thrombus from the blood vessel; A protective device is placed on the other side of the thrombus to collect the thrombus; Features: The suction device comprises: A box body having a collecting chamber; a connection box, communicating with the box body; A piston plate, arranged in the connection box; A first push plate connected to the piston plate; An air outlet is provided on the side wall of the box body, a suction port is provided at the bottom, and a connection port is provided at the top. A connecting pipe connecting the air outlet and the connection port is provided in the box body, an opening corresponding to the suction port is provided at the bottom of the connecting pipe, a baffle is provided in the connecting pipe, and the baffle is rotatably connected in the connecting pipe; when the piston plate moves toward the connection port, the baffle closes the opening; when the piston plate moves away from the connection port, the baffle closes the air outlet; The connection box is provided with a support plate having the same height as the first push plate.

2. The thrombus aspiration and thrombolysis protection device according to claim 1, characterized in that: The suction device also includes: A first connecting shaft, disposed on the baffle; A transmission wheel, disposed at one end of the first connecting shaft; A transmission rod, which is in transmission cooperation with the transmission wheel; The first connecting shaft passes through the box body, and the transmission rod is slidably connected to the side wall of the box body.

3. The thrombus aspiration and thrombolysis protection device according to claim 2, characterized in that: The suction device also includes: A first connecting rod connected to the transmission rod; A second push plate, disposed on the first connecting rod; The second push plate is located at the top of the connection box, and the first push plate and the second push plate are respectively located at both sides of the support plate. When the first push plate and the second push plate are pushed relative to each other, the second push plate moves before the first push plate.

4. The thrombus aspiration and thrombolysis protection device according to claim 3, characterized in that: The suction device also includes: A movable rod, arranged on the supporting plate; A first protrusion, disposed on the movable rod; A first return spring, arranged on the movable rod; The support plate is provided with a first through slot, the movable rod is inserted into the first through slot, and one end of the first return spring is against the inner wall of the first through slot; the first push plate is provided with a second through slot corresponding to the movable rod, and the second push plate is provided with a guide slot corresponding to the movable rod, the side wall of the guide slot close to the support plate is inclined, and the side wall of the first protrusion close to the support plate is provided with an inclined surface.

5. The thrombus aspiration and thrombolysis protection device according to claim 3, characterized in that: The piston plate is provided with a second return spring, one end of which is against the inner wall of the connection box; the second push plate is provided with a third return spring, one end of which is against the support plate.

6. The thrombus aspiration and thrombolysis protection device according to claim 1, characterized in that: The suction device also includes: A mounting block, arranged on the box body; A stopper, arranged on the mounting block; A connecting spring, arranged on the stopper; The mounting block is provided with a first movable groove, the stopper is located in the first movable groove, one end of the connecting spring is fixedly connected to the bottom of the first movable groove, and an inclined groove is provided on a side wall of the stopper close to the first push plate.

7. The thrombus aspiration and thrombolysis protection device according to claim 1, characterized in that: The first push plate is provided with a notch corresponding to the stopper and a movable cavity communicated with the notch, a movable plate is provided in the movable cavity, an extension plate is provided at the bottom of the movable plate, and the extension plate extends into the notch; a third push plate is provided on the movable plate, and the third push plate passes through the movable cavity.

8. The thrombus aspiration and thrombolysis protection device according to claim 1, characterized in that: A second connecting rod is provided on the piston plate, a first sliding block is provided on the first push plate, a first sliding groove for the first sliding block to move is provided on the second connecting rod, a second protrusion is provided on the top of the box body, and a guide surface is provided on the second protrusion; a third through groove is provided on the first push plate, a groove is provided on the side wall of the third through groove, and a flap is rotatably connected in the groove.

9. The thrombus aspiration and thrombolysis protection device according to claim 1, characterized in that: A guide block is provided at the bottom of the box body, the top surface of the guide block is inclined, a through cavity communicating with the suction port is provided on the guide block, a discharge port is provided on the side wall of the connection box, and a sealing plate for closing the discharge port is provided on the side wall of the connection box.

10. The thrombus aspiration and thrombolysis protection device according to claim 9, characterized in that: A plurality of baffle rods are provided in the through cavity, a second connecting shaft is provided on the baffle plate, a connecting groove corresponding to the second connecting shaft is provided on the inner wall of the through cavity, a second sliding block is provided on the second connecting shaft, and a second sliding groove for movement of the second sliding block is provided on the inner wall of the connecting groove; the distance between the second connecting shaft and the side wall on one side of the baffle rod is greater than the distance between the second connecting shaft and the side wall on the other side of the baffle rod.

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