Dense net type vascular endoluminal intervention hemostasis system

Abstract

The invention discloses a dense net type vascular endoluminal intervention hemostasis system, and belongs to the technical field of intervention type medical instruments. The device comprises a guide pipe and a dense net assembly fixed to the guide pipe. The dense net assembly comprises a first dense net structure arranged in an aorta abdominalis cavity, a second dense net structure arranged in an affected-side iliac general artery cavity and a third dense net structure arranged in an affected-side iliac external artery cavity, and the first dense net structure, the second dense net structure and the third dense net structure are all wire pulling releasing dense net structures controlled by the outside. A three-dense net structure is arranged on the catheter, so that multiple blood vessels can be blocked at the same time; a three-cavity structure is adopted in the catheter, wherein the first cavity is a guide wire cavity used for being connected with a guide wire; the second cavity is a blood circulation cavity, and blood can be drained from the aorta abdominalis cavity to the external iliac artery cavity, so that it is guaranteed that blood can be continuously supplied to the telecentric end of the external iliac artery, namely the lower limb; the third cavity is an operation cavity, and intracavity embolization can be carried out on multiple blood vessels.

Description

Technical Field

[0001] The invention relates to a dense-net type intravascular interventional hemostasis system, belonging to the technical field of interventional medical devices. Background Art

[0002] In the case of massive pelvic bleeding such as pelvic fractures and postpartum hemorrhage, it is impossible to stop bleeding through external compression, while traditional open surgery takes a long time, is very traumatic, and has poor results. At present, endovascular interventional treatment has become the preferred treatment for this type of bleeding. However, due to the difficulty of implementing interventional technology in some hospitals and the lack of convenient hemostasis equipment, patients often need to be transferred to units with experience in endovascular interventional treatment to complete embolization and hemostasis of unilateral / bilateral internal iliac arteries and their branches. During the transfer, the patient's massive pelvic bleeding cannot be effectively controlled; or although the pelvic blood flow can be temporarily blocked using a single iliac artery balloon through current interventional methods and hemostasis equipment, the blood flow to the lower limbs is also blocked at the same time, resulting in prolonged ischemia of the lower limbs.

[0003] At present, the temporary hemostasis method in the vascular cavity mainly uses balloons for temporary blockage. It is to place a balloon catheter in the proximal blood vessel of the bleeding site, fill the balloon and temporarily block the blood flow to buy time for further treatment. If the operation is not performed by an experienced doctor, the balloon may be over-expanded during the operation, or there are irregularities or calcifications in the blood vessel wall, and the balloon may rupture when it expands in the blood vessel. After the balloon ruptures, it may lead to incomplete embolism and fail to achieve the expected treatment effect. At the same time, the ruptured balloon fragments may fall off, causing embolism of the distal blood vessels and causing serious complications; when the balloon ruptures, it may also cause vascular damage and even vascular rupture and bleeding. In addition, balloon blockage has the following shortcomings: balloon blockage and interventional embolization operations can only be performed separately, not at the same time; the balloon is generally a single balloon, which cannot simultaneously block the bilateral iliac arteries and prevent the reflux of the external iliac artery; balloon blockage of blood flow may cause local thrombosis.

[0004] Therefore, a dense mesh intravascular interventional hemostasis system is designed, which can avoid the potential risks of balloon catheters, and can be placed quickly and easily, and can control the blood flow as needed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a dense mesh intravascular interventional hemostasis system, which can conveniently and quickly complete the intravascular hemostasis operation by setting a plurality of independent wire-pulling and releasing dense mesh structures.

[0006] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0007] A dense mesh type intravascular interventional hemostasis system comprises a catheter and a dense mesh component fixed on the catheter;

[0008] The dense mesh component includes a first dense mesh structure arranged in the abdominal aorta cavity, a second dense mesh structure arranged in the affected common iliac artery cavity, and a third dense mesh structure arranged in the affected external iliac artery cavity, wherein the first dense mesh structure, the second dense mesh structure, and the third dense mesh structure all adopt a wire-pull release dense mesh structure controlled externally;

[0009] The catheter is provided with a guidewire cavity, a blood passage cavity and an operation cavity;

[0010] The guidewire cavity is a cavity that runs from the distal end to the proximal end;

[0011] The proximal opening of the blood passage cavity is located at the proximal end of the first dense mesh structure, and the distal opening of the blood passage cavity is located at the distal end of the third dense mesh structure;

[0012] The operation cavity is a cavity that runs from the distal end to the proximal end, and is provided with a first operation opening and a second operation opening leading to the blood vessel. The first operation opening is located on the catheter between the first dense mesh structure and the second dense mesh structure, and the second operation opening is located on the catheter between the second dense mesh structure and the third dense mesh structure.

[0013] As a preferred example, the wire-pull release dense mesh structure includes a fixed sleeve, a movable sleeve, a dense mesh main body, and a control wire. A slide groove is provided on the catheter, and a control cavity connected to the outside is provided at the distal end of the slide groove. The control wire is inserted into the control cavity. The distal end of the dense mesh main body is fixed on the fixed sleeve and fixed to the catheter through the fixed sleeve, and the proximal end of the dense mesh main body is fixed on the movable sleeve. The movable sleeve is sleeved on the slide groove of the catheter, and the movable sleeve is connected to the proximal end of the control wire. When the operator pulls the control wire toward the distal end, the movable sleeve displaces toward the distal end along the slide groove and squeezes the dense mesh main body to form a hemostatic spindle-shaped dense mesh.

[0014] As a preferred example, the inner wall of the movable sleeve is provided with a sliding block that cooperates with the sliding groove.

[0015] As a preferred example, a return spring sleeved on the control wire is arranged in the slide groove, one end of the return spring abuts against the slider, and the other end is limited by the distal end face of the slide groove.

[0016] As a preferred example, the end of the return spring is welded and fixed to at least one of the slide groove and the movable sleeve.

[0017] As a preferred example, the fixed sleeve, the movable sleeve, the proximal end opening, the distal end opening, the first operating opening, and the second operating opening are all provided with developing rings.

[0018] As a preferred example, the dense mesh body is made of a material having a shape memory effect.

[0019] As a preferred example, the surface of the dense mesh body is coated with a heparin coating.

[0020] As a preferred example, an anti-reflux valve is provided at the distal end port of the operation chamber.

[0021] The beneficial effects of the present invention are:

[0022] A three-dense mesh structure is set on the catheter. The three dense mesh components are located on the same catheter. After being inserted through the femoral artery, the first dense mesh structure is located in the abdominal aorta, the second dense mesh structure is located in the common iliac artery on the affected side, and the third dense mesh structure is located in the external iliac artery on the affected side, which can be blocked at the same time.

[0023] The catheter adopts a three-lumen structure: the first lumen is a guidewire lumen, which is used to connect the guide wire; the second lumen is a blood passage lumen, that is, after the dense mesh structure is formed, an internal tunnel is set between the proximal end of the first dense mesh structure and the distal end of the third dense mesh structure, which can drain blood from the abdominal aorta lumen to the external iliac artery lumen, thereby ensuring that the blood at the distal end of the external iliac artery, i.e., the lower limbs, can be continuously supplied; the third lumen is an operation lumen, which is connected to the outside of the body through an anti-reflux valve to form an external tunnel, and the external tunnel connects two operation openings on the catheter. The first operation opening is located between the first dense mesh structure and the second dense mesh structure, and the embolization catheter enters from the external anti-reflux valve and the external tunnel to perform intravascular embolization on the contralateral internal iliac artery or its branches, and the second operation opening is located between the second dense mesh structure and the third dense mesh structure, facing the opening of the affected internal iliac artery, and the embolization catheter enters from the external anti-reflux valve and the external tunnel to perform intravascular embolization on the affected internal iliac artery or its branches.

[0024] Adopt dense mesh design: if the dense mesh is too dense, the blood flow can be completely blocked, while if the dense mesh is too sparse, the blood flow will be less affected. The density of the dense mesh can be selected according to the needs.

[0025] Full-course marking design: The fixed sleeve, movable sleeve, proximal opening, distal opening, first operation opening and second operation opening are all equipped with developing rings for observing the dense network and opening position during intracavitary interventional treatment.

[0026] Anticoagulant design: The dense mesh structure is coated with heparin to avoid intravascular thrombosis during blocking.

[0027] The dense mesh structure is designed by thread-pull release: compared with the risk of instantaneous bursting when the balloon is expanded through the filling cavity, the dense mesh structure released by thread-pull can quickly and easily complete the expansion and resetting recovery through the control wire, and there is no risk of rupture. The dense mesh structure has a large elastic range, and the thread pull can accurately adjust the expansion diameter. In addition, compared with the thicker balloon, the dense mesh structure can achieve a thinner volume, and it is expected that the operation can be completed through a simple femoral artery puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the present invention placed in a blood vessel cavity;

[0029] Figure 2 It is a structural schematic diagram of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the wire pulling release dense mesh structure when the control wire is tightened;

[0031] Figure 4 It is a schematic diagram of the structure when the wire is relaxed by releasing the dense mesh structure;

[0032] Figure 5 It is a schematic diagram of the cross-sectional structure of the slideway for releasing the dense mesh structure by wire pulling;

[0033] Figure 6 It is a schematic diagram of the cross-sectional structure at the proximal opening of the catheter;

[0034] Figure 7 It is a schematic diagram of the cross-sectional structure at the distal end opening of the catheter;

[0035] Figure 8 is a schematic diagram of the cross-sectional structure of the first operating opening of the catheter;

[0036] Fig. 9 is a schematic diagram of the cross-sectional structure of the second operating opening of the catheter;

[0037] Fig.10 It is a schematic diagram of the cross-sectional structure of the catheter away from the distal end opening.

[0038] In the figure: 1. catheter; 11. guidewire cavity; 12. blood passage cavity; 13. operation cavity; 14. slide groove; 15. control cavity; 121. proximal end opening; 122. distal end opening; 131. first operation opening; 132. second operation opening; 2. dense mesh component; 21. first dense mesh structure; 22. second dense mesh structure; 23. third dense mesh structure; 201. fixed sleeve; 202. movable sleeve; 203. dense mesh body; 204. control wire; 205. slider; 206. reset spring; 207. transition section; 3. abdominal aorta; 31. affected common iliac artery; 32. affected external iliac artery; 33. affected internal iliac artery; 34. contralateral common iliac artery; 35. contralateral external iliac artery; 36. contralateral internal iliac artery; 4. developing ring; 5. guidewire; 6. outer sleeve. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0040] The "proximal end" mentioned in this article refers to the end closer to the heart in medicine; the "distal end" refers to the end farther from the heart in medicine. In order to facilitate observation of the internal structure, Figure 2 , Fig.10 The main body of the medium-density mesh is represented by contour lines. The figure is a schematic diagram and the structures are not true to scale.

[0041] This system is designed to solve the problem of severe pelvic bleeding. The existing single-balloon hemostasis requires multiple balloons to cooperate with each other to perform intravascular interventional operations. However, this system can use an intracavity interventional device (three-density mesh structure) to complete the blocking of the blood flow of the bilateral iliac arteries and temporarily control the blood flow of the bilateral internal iliac arteries. On the basis of controlling the blood flow of the internal iliac arteries and reducing pelvic bleeding, by connecting the external operation cavity 13 and multiple openings, the bilateral internal iliac arteries and their branches can be embolized to complete the hemostasis operation and avoid local thrombosis.

[0042] like Figure 1 , Figure 2 As shown, the abdominal aorta 3, the affected common iliac artery 31, the affected external iliac artery 32, the affected internal iliac artery 33, the contralateral common iliac artery 34, the contralateral external iliac artery 35, and the contralateral internal iliac artery 36 structures below the renal artery.

[0043] The dense mesh intravascular interventional hemostasis system comprises a catheter 1 and a dense mesh component 2 fixed on the catheter 1 .

[0044] The dense mesh component 2 includes a first dense mesh structure 21 arranged in the cavity of the abdominal aorta 3, a second dense mesh structure 22 arranged in the cavity of the affected common iliac artery 31, and a third dense mesh structure 23 arranged in the cavity of the affected external iliac artery 32. The first dense mesh structure 21, the second dense mesh structure 22, and the third dense mesh structure 23 all adopt a wire-pull release dense mesh structure controlled externally.

[0045] A guidewire cavity 11 , a blood passage cavity 12 , and an operation cavity 13 are provided in the catheter 1 .

[0046] The guidewire cavity 11 is a cavity that runs from the distal end to the proximal end, which facilitates the insertion of the guidewire.

[0047] The proximal opening 121 of the blood-passing cavity 12 is located at the proximal end of the first dense mesh structure 21, and the distal opening 122 of the blood-passing cavity 12 is located at the distal end of the third dense mesh structure 23. The portion of the blood-passing cavity 12 between the proximal opening 121 and the distal opening 122 is located inside the catheter 1.

[0048] The operation cavity 13 is a cavity that runs from the distal end to the proximal end, and is provided with a first operation opening 131 and a second operation opening 132 leading to the blood vessel. The first operation opening 131 is located on the catheter 1 between the first dense mesh structure 21 and the second dense mesh structure 22, and the second operation opening 132 is located on the catheter 1 between the second dense mesh structure 22 and the third dense mesh structure 23.

[0049] like Figure 3-Figure 5 As shown, the wire-pull release dense mesh structure includes a fixed sleeve 201, a movable sleeve 202, a dense mesh main body 203, and a control wire 204. A slide groove 14 is provided on the catheter 1. A control cavity 15 connected to the outside is provided at the distal end of the slide groove 14. The control wire 204 is inserted into the control cavity 15. The distal end of the dense mesh main body 203 is fixed on the fixed sleeve 201 and fixed to the catheter 1 through the fixed sleeve 201. The proximal end of the dense mesh main body 203 is fixed on the movable sleeve 202. The movable sleeve 202 is sleeved on the slide groove 14 of the catheter 1. The movable sleeve 202 is connected to the proximal end of the control wire 204. When the operator pulls the control wire 204 toward the distal end, the movable sleeve 202 moves toward the distal end along the slide groove 14 and squeezes the dense mesh main body 203 to form a hemostatic spindle-shaped dense mesh.

[0050] When in use, first pass the guide wire 5 into the abdominal aorta 3, then put the catheter 1 loaded with the dense mesh structure into the outer sleeve 6, and then put the catheter 1 on the guide wire 5, the outer sleeve 6 and the catheter 1 enter the abdominal aorta 3 along the guide wire 5. At this time, by withdrawing the outer sleeve 6, the dense mesh structure is exposed in the blood vessel, and the dense mesh body 203 is released in the abdominal aorta 3, the affected common iliac artery 31, and the affected external iliac artery 32 in turn through the control wire 204. By pulling the length of the control wire 204 toward the distal end, the expansion diameter of the dense mesh body 203 is controlled. When the dense mesh body 203 expands to the blood vessel wall, the pulling force will suddenly increase. At this time, the control wire 204 can be fixed, and the dense dense mesh body 203 can effectively block the blood flow.

[0051] The inner wall of the movable sleeve 202 is provided with a sliding block 205 which cooperates with the sliding groove 14 .

[0052] The slider 205 moves in the slide groove 14. On the one hand, the slide groove 14 plays a limiting role, which can limit the sliding stroke of the slider 205, thereby limiting the dense mesh body 203 to always be in a shuttle-shaped expansion or contraction state; on the other hand, it can prevent the dense mesh body 203 from rotating.

[0053] A return spring 206 sleeved on the control wire 204 is arranged in the slide groove 14 , one end of the return spring 206 abuts against the slider 205 , and the other end is limited by the distal end surface of the slide groove 14 .

[0054] On the one hand, the reset spring 206 can push the movable sleeve 202 to form a reset trend when the control wire 204 is loosened, which can reduce the expanded diameter of the dense mesh body 203 and cooperate with the control wire 204 to play a regulating role; on the other hand, when the interventional surgery is over, after the control wire 204 is completely relaxed, the reset spring 206 drives the dense mesh body 203 to completely reset, and the dense mesh body 203 is close to the outer wall of the catheter 1, so that when it is recovered, the dense mesh body 203 can be re-stored into the outer sleeve 6, relying on the protection of the smooth outer wall of the outer sleeve 6 to prevent the dense mesh body 203 from scratching the blood vessel wall during the withdrawal process.

[0055] In order to facilitate smoother re-insertion of the outer sleeve 6 onto the catheter 1, a transition section 207 is provided at the distal end of the fixed sleeve 201. The transition section 207 is a conical sleeve that gradually transitions from the outer circumferential surface of the catheter 1 with a smaller diameter to the outer circumferential surface of the fixed sleeve 201 with a larger diameter. The outer sleeve 6 can be smoothly introduced from the outer surface of the catheter 1 onto the fixed sleeve 201, and continue to move forward, and the outer sleeve 6 receives the dense mesh body 203 into the cavity.

[0056] The end of the return spring 206 is welded and fixed to at least one of the slide groove 14 and the movable sleeve 202 .

[0057] The welding fixation of the return spring 206 can prevent the return spring 206 from being separated from the catheter 1 when the control wire 204 is broken, thereby preventing danger.

[0058] The fixed sleeve 201 , the movable sleeve 202 , the proximal end opening 121 , the distal end opening 122 , the first operating opening 131 , and the second operating opening 132 are all provided with developing rings 4 .

[0059] The dense mesh body 203 is made of a material having a shape memory effect.

[0060] The surface of the dense mesh body 203 is coated with a heparin coating. The dense mesh structure has a heparin coating to prevent thrombosis in the blood vessels during blocking.

[0061] An anti-reflux valve is provided at the distal end of the operating cavity 13 to prevent blood from flowing out of the cavity.

[0062] like Figure 6-10 Shown are multiple cross sections of the catheter 1 from the proximal end to the distal end.

[0063] Among them, Figure 6 , Figure 7 As shown, this group is a schematic diagram of the cross-sectional structure at the proximal opening 121 and the distal opening 122. The blood cavity 12 channel arranged between the proximal opening 121 and the distal opening 122 becomes an inner tunnel.

[0064] Among them, Figure 8 , Fig. 9As shown, this group is a schematic diagram of the cross-sectional structure of the first operating opening 131 and the second operating opening 132. Both are openings made from the side of the operating cavity 13. The openings are oblong holes to facilitate the embolization catheter (not shown) to pass through them.

[0065] Among them, Fig.10 As shown, this is a schematic diagram of the cross-sectional structure of the catheter 1 away from the distal end opening 122, and the structure extends from the distal end opening 122 to the operating part for the operator outside the body.

[0066] A three-dense mesh structure is arranged on the catheter 1. The three dense mesh components 2 are located on the same catheter 1. After being inserted through the femoral artery, the first dense mesh structure 21 is located at the abdominal aorta 3, the second dense mesh structure 22 is located at the affected common iliac artery 31, and the third dense mesh structure 23 is located at the affected external iliac artery 32, so that both can be blocked at the same time.

[0067] The catheter 1 adopts a three-chamber structure: the first chamber is a guidewire chamber 11, which is used to connect the guidewire; the second chamber is a blood passage chamber 12, that is, after the dense network structure is formed, an inner tunnel is set between the proximal end of the first dense network structure 21 and the distal end of the third dense network structure 23, which can drain blood from the three chambers of the abdominal aorta to the external iliac artery chamber, thereby ensuring that the blood at the distal end of the external iliac artery, i.e., the lower limbs, can be continuously supplied; the third chamber is an operation chamber 13, which is connected to the body through an anti-reflux valve to form an external tunnel, and the external tunnel is connected to the external aorta chamber 13. There are two operation openings on the catheter 1. The first operation opening 131 is located between the first dense mesh structure 21 and the second dense mesh structure 22. The embolization catheter enters from the extracorporeal anti-reflux valve and the external tunnel to perform intravascular embolization on the contralateral internal iliac artery 36 or its branches. The second operation opening 132 is located between the second dense mesh structure 22 and the third dense mesh structure 23, facing the opening of the affected internal iliac artery 33. The embolization catheter enters from the extracorporeal anti-reflux valve and the external tunnel to perform intravascular embolization on the affected internal iliac artery 33 or its branches. The embolization catheter accurately delivers the embolic material to the blood vessels at the site of the lesion. The doctor can reach the target blood vessel by advancing and adjusting the embolization catheter in the blood vessel, ensuring that the embolic material can accurately block the lesion vessel.

[0068] Adopt dense mesh design: if the dense mesh is too dense, the blood flow can be completely blocked, while if the dense mesh is too sparse, the blood flow will be less affected. The density of the dense mesh can be selected according to the needs.

[0069] Full-course marking design: The fixed sleeve 201, the movable sleeve 202, the proximal end opening 121, the distal end opening 122, the first operating opening 131, and the second operating opening 132 are all provided with developing rings 4 for observing the dense network and the opening position during intracavitary interventional treatment.

[0070] The dense mesh structure is designed with thread-pull release: compared with the risk of instantaneous bursting when the balloon is expanded through the filling cavity, the dense mesh structure released by thread-pull can quickly and easily complete the expansion and resetting recovery through the control wire 204, and there is no risk of rupture. The dense mesh structure has a large elastic range, and the thread pull can accurately adjust the expansion diameter. In addition, compared with the thicker balloon, the dense mesh structure can achieve a thinner volume, and it is expected that the operation can be completed through a simple femoral artery puncture.

[0071] Use scenarios:

[0072] When a patient with massive pelvic hemorrhage arrives at the hospital, the system is first inserted quickly through a puncture of one femoral artery in the interventional treatment operating room, and the position of the three-density mesh is located under X-rays to block the abdominal aorta 3 below the renal artery, the affected common iliac artery 31, and the affected external iliac artery 32.

[0073] The first dense mesh structure 21 temporarily blocks the blood flow of the contralateral common iliac artery 34 , the second dense mesh structure 22 temporarily blocks the blood flow of the proximal end of the affected common iliac artery 31 , and the third dense mesh structure 23 blocks the reflux blood of the distal end of the affected external iliac artery from entering the internal iliac artery.

[0074] After the three-dense mesh is blocked, an embolization catheter is inserted from outside the body through the operation cavity 13, enters the blood vessel from the first operation opening 131 between the first dense mesh structure 21 and the second dense mesh structure 22, and enters the contralateral internal iliac artery 36 to embolize the bleeding artery. After completion, an embolization catheter is inserted from the second operation opening 132 between the second dense mesh structure 22 and the third dense mesh structure 23, enters the affected internal iliac artery 33, and embolizes the bleeding branch artery of the affected internal iliac artery 33.

[0075] After bilateral internal iliac artery embolization was completed, the three-density mesh catheter 1 was withdrawn to complete the interventional procedure.

[0076] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dense mesh intravascular interventional hemostasis system, characterized in that: The utility model comprises a catheter, and a dense mesh component fixed on the catheter; The dense mesh component includes a first dense mesh structure arranged in the abdominal aorta cavity, a second dense mesh structure arranged in the affected common iliac artery cavity, and a third dense mesh structure arranged in the affected external iliac artery cavity, wherein the first dense mesh structure, the second dense mesh structure, and the third dense mesh structure all adopt a wire-pull release dense mesh structure controlled externally; The catheter is provided with a guidewire cavity, a blood passage cavity and an operation cavity; The guidewire cavity is a cavity that runs from the distal end to the proximal end; The proximal opening of the blood passage cavity is located at the proximal end of the first dense mesh structure, and the distal opening of the blood passage cavity is located at the distal end of the third dense mesh structure; The operation cavity is a cavity that runs from the distal end to the proximal end, and is provided with a first operation opening and a second operation opening leading to the blood vessel. The first operation opening is located on the catheter between the first dense mesh structure and the second dense mesh structure, and the second operation opening is located on the catheter between the second dense mesh structure and the third dense mesh structure.

2. A dense mesh intravascular interventional hemostasis system according to claim 1, characterized in that: The wire-pull release dense mesh structure includes a fixed sleeve, a movable sleeve, a dense mesh main body, and a control wire. A slide groove is provided on the catheter, and a control cavity connected to the outside is provided at the distal end of the slide groove. The control wire is inserted into the control cavity. The distal end of the dense mesh main body is fixed on the fixed sleeve and fixed to the catheter through the fixed sleeve, and the proximal end of the dense mesh main body is fixed on the movable sleeve. The movable sleeve is sleeved on the slide groove of the catheter, and the movable sleeve is connected to the proximal end of the control wire. When the operator pulls the control wire toward the distal end, the movable sleeve moves toward the distal end along the slide groove and squeezes the dense mesh main body to form a hemostatic spindle-shaped dense mesh.

3. A dense mesh intravascular interventional hemostasis system according to claim 2, characterized in that: The inner wall of the movable sleeve is provided with a sliding block matched with the sliding groove.

4. A dense mesh intravascular interventional hemostasis system according to claim 3, characterized in that: A return spring sleeved on the control wire is arranged in the slide groove, one end of the return spring abuts against the slider, and the other end is restricted by the distal end face of the slide groove.

5. A dense mesh intravascular interventional hemostasis system according to claim 4, characterized in that: The end of the return spring is fixed by welding to at least one of the slide groove and the movable sleeve.

6. A dense mesh intravascular interventional hemostasis system according to claim 2, characterized in that: The fixed sleeve, the movable sleeve, the proximal end opening, the distal end opening, the first operating opening and the second operating opening are all provided with developing rings.

7. A dense mesh intravascular interventional hemostasis system according to claim 2, characterized in that: The dense mesh body is made of a material with shape memory effect.

8. The dense mesh intravascular interventional hemostasis system according to claim 2, characterized in that: The surface of the dense mesh main body is coated with a heparin coating.

9. A dense mesh intravascular interventional hemostasis system according to claim 1, characterized in that: An anti-reflux valve is arranged at the distal end port of the operation chamber.

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