Aneurysm plugging device

Abstract

The invention provides an aneurysm plugging device, which relates to the technical field of medical instruments and comprises an external plugging component and an internal plugging component. The far-end guide wire is used for connecting the extratumoral plugging part and the intratumoral plugging part; the in-tumor plugging part comprises an in-tumor supporting umbrella arranged at the far end of the far-end guide wire, the out-tumor plugging part comprises an out-tumor supporting umbrella arranged at the near end of the far-end guide wire, the in-tumor supporting umbrella abuts against the inner side wall of the opening of the inner cavity of the tumor body in the expanded state, and the out-tumor supporting umbrella abuts against the outer side wall of the opening of the inner cavity of the tumor body in the expanded state. By arranging the intra-tumor supporting umbrella, the extra-tumor supporting umbrella and the far-end guide wire, a stable structure in which the extra-tumor supporting umbrella and the intra-tumor supporting umbrella clamp the inner side wall and the outer side wall of the tumor cavity opening and the middle is connected through the far-end guide wire is formed, and the device can be stably fixed to the tumor cavity opening; the design of the inner and outer protection umbrellas makes the connection between the device and the tumor cavity opening more stable, and also can reduce the risk that the spring ring escapes from the protection umbrellas.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to an aneurysm occlusion device. Background Art

[0002] Intracranial aneurysms are often found at the bifurcation of intracranial arteries. They are abnormal bulges formed by gradual expansion due to damage to the vascular wall of intracranial arteries caused by congenital abnormalities or acquired injuries and other factors.

[0003] Traditional treatments for intracranial aneurysms include: surgical treatment; medical drug treatment and minimally invasive interventional treatment. Minimally invasive interventional treatment usually involves filling coils into the aneurysm to change the blood flow field in the aneurysm, reducing the impact of blood on the inner wall of the aneurysm, and thereby reducing the risk of aneurysm expansion. Then, a coil plugging component is filled at the aneurysm opening to prevent external blood from continuing to flow into the aneurysm. For example, the aneurysm plugging device disclosed in patent document number CN113069168A has a base and a 3D coil. When in use, the 3D coil is used to fill the aneurysm, and the base is installed at the entrance of the aneurysm as a plugging component to prevent the coil from detaching from the aneurysm and prevent blood from further flowing into the aneurysm.

[0004] The existing device for treating aneurysms cannot completely ensure a tight seal because the sealing component is set inside the aneurysm, and the gap between the sealing component and the inner wall of the aneurysm cannot be completely sealed. Under the impact of blood flow, the sealing component will compress the spring coil, resulting in a gap between the sealing component and the inner wall of the aneurysm, and eventually blood will continue to flow into the aneurysm, affecting the treatment effect. In addition, the spring coil of this device will reciprocate and deform under the impact of blood flow, which will further squeeze the side wall of the aneurysm, and in severe cases, it will cause the aneurysm to rupture.

[0005] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0006] The purpose of the present invention is to provide an aneurysm occluding device to solve the problem in the prior art that the occluding component is unstable when installed in the aneurysm cavity and is easily pulled outward to the opening of the aneurysm by the shear force of the blood flow.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] An aneurysm occlusion device comprises an extra-aneurysm occlusion component and an intra-aneurysm occlusion component;

[0009] A distal guide wire, used to connect the extra-tumor occlusion component and the intra-tumor occlusion component;

[0010] Among them, the intra-tumor blocking component includes an intra-tumor supporting umbrella arranged at the distal end of the distal guide wire, and the extra-tumor blocking component includes an extra-tumor supporting umbrella arranged at the proximal end of the distal guide wire. The intra-tumor supporting umbrella abuts against the inner wall of the opening of the tumor cavity in the expanded state, and the extra-tumor supporting umbrella abuts against the outer wall of the opening of the tumor cavity in the expanded state.

[0011] Preferably, the extra-tumor support umbrella and the intra-tumor support umbrella are disc-shaped in the expanded state.

[0012] Preferably, an intra-tumor anti-slip film is provided on the side wall of the intra-tumor support umbrella close to the tumor cavity opening, and the intra-tumor anti-slip film fits the inner wall of the tumor body in an expanded state.

[0013] Preferably, the extra-tumor support umbrella and the intra-tumor support umbrella are both components made of memory alloy wire.

[0014] Preferably, an extra-tumor sealing membrane is provided on the side wall of the extra-tumor supporting umbrella close to the tumor cavity opening.

[0015] Preferably, it also includes a delivery guide wire, which is detachably connected to the distal guide wire.

[0016] Preferably, a connecting assembly is provided at the connection between the distal guide wire and the delivery guide wire, and the connecting assembly includes an external thread arranged on the distal side wall of the delivery guide wire, and a connecting block arranged at the proximal end of the distal guide wire, and an internal thread groove adapted to the external thread is arranged in the connecting block, and the proximal guide wire is threadedly connected to the connecting block.

[0017] Preferably, the delivery guide wire is provided with a developing part, which is made of a densely wound platinum-iridium alloy. Under the developing device, the developing part presents a light spot with a different brightness from other parts, which is used to assist the doctor in determining the position of the delivery guide wire.

[0018] Preferably, the distal end of the distal guide wire is configured as a shaping portion, and the shaping portion is in the form of an arc or a circular ring.

[0019] Preferably, the distal guide wire is provided with a developing spring located at the proximal end of the shaping portion.

[0020] Beneficial effects:

[0021] (1) The present invention provides an intratumor support umbrella, an extratumor support umbrella and a distal guide wire, so that the extratumor support umbrella and the intratumor support umbrella clamp both the inner and outer side walls of the tumor cavity opening, and a stable structure connected in the middle by the distal guide wire can be stably fixed at the tumor cavity opening to prevent the blood flow from driving the support umbrella to move, resulting in the support umbrella failing to seal tightly;

[0022] (2) The present invention can fill the gap between the support umbrella and the side wall of the tumor cavity by providing an anti-slip film inside the tumor and a sealing film outside the tumor, so as to better abut against the side wall of the tumor cavity to prevent blood from flowing into the tumor cavity, thereby improving the use effect of the device;

[0023] (3) The present invention provides a connection assembly, and the rotating conveying guide wire can achieve threaded connection and release, thereby quickly achieving assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0025] Figure 1 It is a schematic diagram of the structure of the extra-tumor blocking component, the intra-tumor blocking component and the distal guide wire in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the device installed in the tumor cavity in an embodiment of the present invention;

[0027] Figure 3 for Figure 2 A magnified view of the structure at A;

[0028] Figure 4 This is a schematic diagram of the overall structure after the delivery guide wire is connected in an embodiment of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure in a contracted state after the delivery guide wire is connected in an embodiment of the present invention.

[0030] In the figure: 1. Tumor-external blocking component; 11. Tumor-external supporting umbrella; 12. Tumor-external sealing membrane; 2. Tumor-internal blocking component; 21. Tumor-internal supporting umbrella; 22. Tumor-internal anti-slip membrane; 3. Distal guide wire; 31. Shaping part; 32. Development spring; 4. Delivery guide wire; 41. Development part; 5. Connection assembly; 51. External thread; 52. Connection block; 53. Internal thread groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0036] In the description of the present invention, "before use" refers to the state of the aneurysm occluding device before use, before entering the human body, or before coming into contact with body fluids such as blood, tissue fluid, etc. in the human body; and "during use" refers to the state of the aneurysm occluding device after entering the human body or coming into contact with body fluids such as blood, tissue fluid, etc. in the human body.

[0037] In the description of the present invention, regarding the "contracted state" and the "expanded state", the "contracted state" refers to the state in which the intra-tumor support umbrella and the extra-tumor support umbrella are in contact with each other within a local length range or within the entire length range; the "expanded state" refers to the state in which the entire length range of the intra-tumor support umbrella and the extra-tumor support umbrella are out of contact, and the intra-tumor support umbrella and the extra-tumor support umbrella are expanded to form an umbrella shape.

[0038] In the description of the present invention, "in vivo environment" refers to the environment below the epidermis of the skin where body fluids exist, such as the dermis and subcutaneous tissue, or the inside of blood vessels and organs.

[0039] In the description of the present invention, "proximal end" refers to the end close to the doctor during surgery, and "distal end" refers to the end farthest from the doctor during surgery.

[0040] The present invention will be described in detail below in conjunction with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0041] The present invention aims to solve the problem in the prior art that a blocking component is arranged inside a tumor. Under the impact of blood flow, the blocking component will compress the spring coil, resulting in a gap between the blocking component and the inner wall of the tumor, and finally blood will continue to flow into the tumor, affecting the treatment effect.

[0042] The present invention provides an aneurysm occlusion device, see Figure 1 , Figure 2 and Figure 3 , including an extra-tumor blocking component 1 and an intra-tumor blocking component 2;

[0043] The distal guide wire 3 is used to connect the extra-tumor blocking component 1 and the intra-tumor blocking component 2;

[0044] The intratumor blocking component 2 includes an intratumor support umbrella 21 disposed at the distal end of the distal guide wire 3, and the extratumor blocking component 1 includes an extratumor support umbrella 11 disposed at the proximal end of the distal guide wire 3. The intratumor support umbrella 21 abuts against the inner wall of the opening of the tumor cavity in the expanded state, and the extratumor support umbrella 11 abuts against the outer wall of the opening of the tumor cavity in the expanded state. The intratumor support umbrella 21 is welded, bonded or hot-melted to the distal end of the distal guide wire 3, and the extratumor support umbrella 11 is welded, bonded or hot-melted to the proximal end of the distal guide wire 3. Both the intratumor support umbrella 21 and the extratumor support umbrella 11 are provided with a contracted state and an expanded state.

[0045] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 Specifically, in the contracted state, the entire or partial length range of the intratumor support umbrella 21 and the extratumor support umbrella 11 is pressed and gripped in the delivery catheter. After the delivery catheter and the distal guide wire 3 are in place, the delivery catheter is withdrawn, and the intratumor support umbrella 21 and the extratumor support umbrella 11 lose radial constraints and automatically bulge out. When the delivery catheter is completely withdrawn from the proximal end of the extratumor support umbrella 11, the intratumor support umbrella 21 and the extratumor support umbrella 11 are completely bulged out, and are now in an expanded state. In the expanded state, the side wall of the intratumor support umbrella 21 is fully fitted with the inner side wall of the tumor cavity to achieve the fixation of the intratumor support umbrella 21; at the same time, the side wall of the extratumor support umbrella 11 is fully fitted with the outer side wall of the tumor cavity opening to achieve the fixation of the extratumor support umbrella 11. The extratumor support umbrella 11 and the intratumor support umbrella 21 are connected together by the distal guide wire 3.

[0046] By setting up an intratumor support umbrella 21, an extratumor support umbrella 11 and a distal guide wire 3, the extratumor support umbrella 11 and the intratumor support umbrella 21 are formed to clamp the inner and outer side walls of the tumor cavity opening, and a stable structure is connected in the middle by the distal guide wire 3, so that the extratumor support umbrella 11 and the intratumor support umbrella 21 are tightly fitted to the side walls of the tumor cavity opening, reducing the possibility of displacement of the device due to blood flow impact, thereby ensuring the treatment effect.

[0047] In a preferred embodiment of the present invention, the extratumor support umbrella 11 and the intratumor support umbrella 21 are disc-shaped in the expanded state. The disc-shaped extratumor support umbrella 11 can increase the contact area with the side wall of the tumor cavity, thereby achieving a better contact effect.

[0048] In a preferred embodiment of the present invention, an intra-tumor anti-slip membrane 22 is provided on the side wall of the intra-tumor support umbrella 21 close to the tumor cavity opening. The intra-tumor anti-slip membrane 22 adheres to the inner wall of the tumor body in an expanded state.

[0049] In a preferred embodiment of the present invention, both the extratumor support umbrella 11 and the intratumor support umbrella 21 are components made of memory alloy wire. The memory alloy wire is a nickel-titanium alloy or other metals with shape memory function, which will automatically restore to its original shape when not affected by external forces, and can automatically expand and fit the side wall of the tumor cavity after release.

[0050] In a preferred embodiment of the present invention, an extratumor sealing film 12 is provided on the side wall of the extratumor support umbrella 11 close to the opening of the tumor cavity. The extratumor sealing film 12 can be made of medical silicone or TPE material with good biocompatibility, and the extratumor sealing film 12 is used to fill the gap between the extratumor support umbrella 11 and the side wall of the tumor cavity to prevent blood from flowing into the tumor cavity from the gap.

[0051] In a preferred embodiment of the present invention, a delivery guide wire 4 is further included, which is detachably connected to the distal guide wire 3. The delivery guide wire 4 is a component made of stainless steel, which can maintain structural stability during transportation and reduce the possibility of bending of the delivery guide wire 4 during transportation.

[0052] See also Figures 1 to 5 In a preferred embodiment of the present invention, a connection assembly 5 is provided at the connection between the distal guide wire 3 and the delivery guide wire 4. The connection assembly 5 includes an external thread 51 provided on the side wall of the distal end of the delivery guide wire 4, and a connection block 52 provided at the proximal end of the distal guide wire 3. An internal thread groove 53 matching the external thread 51 is provided in the connection block 52, and the proximal guide wire is threadedly connected to the connection block 52. The threaded connection and release can be achieved by rotating the delivery guide wire 4, and assembly and disassembly can be achieved quickly.

[0053] In a preferred embodiment of the present invention, a developing part 41 is provided on the delivery guide wire 4. The developing part 41 is made of a densely wound platinum-iridium alloy. Under the developing device, the developing part 41 presents a light spot with a different brightness from other parts, which is used to assist the doctor in determining the position of the delivery guide wire 4.

[0054] In a preferred embodiment of the present invention, the distal end of the distal guide wire 3 is configured as a shaping portion 31, and the shaping portion 31 is in the form of an arc or a circular ring.

[0055] In a preferred embodiment of the present invention, a developing spring 32 is provided on the distal guide wire 3 at the proximal end of the shaping portion 31. The developing spring 32 is made of a densely wound platinum-iridium alloy, and is used to assist the doctor in determining the position of the delivery guide wire 4. At the same time, the developing spring 32 has a certain elasticity, which reduces the possibility of the distal guide wire 3 puncturing the tumor cavity during the process of entering the tumor cavity.

[0056] The following is a detailed description of an aneurysm occlusion device of the present invention through specific embodiments.

[0057] Example 1

[0058] This embodiment provides an aneurysm occlusion device, see Figure 1 , Figure 2 and Figure 3 As shown, it includes a delivery guide wire 4; the delivery guide wire 4 is preferably a stainless steel wire. Stainless steel wire has good chemical stability and can withstand the complex environment in the human body. The hardness of stainless steel is good, which can reduce the possibility of the delivery guide wire 4 breaking during transportation. In other embodiments of the present application, the delivery guide wire 4 is a nickel-titanium alloy wire, and the nickel-titanium alloy wire has a shape memory function, so that the guide wire can automatically restore to a shape that is conducive to surgical operations after passing through human body channels such as blood vessels. For example, after passing through a tortuous blood vessel to reach the lesion site, the delivery guide wire 4 can automatically restore its shape and better fit the blood vessel wall.

[0059] A developing portion 41 is welded on the delivery guide wire 4 . The developing portion 41 is made of a densely wound platinum-iridium alloy and is used to assist doctors in determining the position of the delivery guide wire 4 .

[0060] See also Figure 1-Figure 5 As shown, the distal guide wire 3 detachably arranged at the distal end of the delivery guide wire 4 is used to connect the intra-tumor blocking component 2 and the extra-tumor blocking component 1; specifically, the proximal end of the distal guide wire 3 is provided with an internal thread groove 53, and the distal end of the delivery guide wire 4 protrudes outward to form an external thread 51 column adapted to the internal thread groove 53. When in use, the delivery guide wire 4 and the distal guide wire 3 are released by rotating the delivery guide wire 4.

[0061] The proximal end of the distal guide wire 3 is provided with an extratumor blocking component 1 for pressing the outer side wall of the tumor cavity opening;

[0062] The distal end of the distal guide wire 3 is provided with an intratumoral blocking component 2 for compressing the inner wall of the tumor cavity opening;

[0063] The intratumor blocking component 2 includes an intratumor support umbrella 21 welded on the distal guide wire 3, and the extratumor blocking component 1 includes an extratumor support umbrella 11 welded on the distal guide wire 3. Both the intratumor support umbrella 21 and the extratumor support umbrella 11 are provided with a contracted state and an expanded state. The intratumor support umbrella 21 abuts against the inner wall of the opening of the tumor cavity in the expanded state, and the extratumor support umbrella 11 abuts against the outer wall of the opening of the tumor cavity in the expanded state. Both the intratumor support umbrella 21 and the extratumor support umbrella 11 are woven from memory alloy wires, which are nickel-titanium alloys or other metals with shape memory functions, and will automatically return to their original shapes when not affected by external forces.

[0064] In the contracted state, the entire or partial length range of the intratumor support umbrella 21 and the extratumor support umbrella 11 is pressed and gripped in the delivery catheter. After the delivery catheter and the distal guide wire 3 are in place, the delivery catheter is withdrawn, and the intratumor support umbrella 21 and the extratumor support umbrella 11 lose radial constraints and automatically bulge out. When the delivery catheter is completely withdrawn from the proximal end of the extratumor support umbrella 11, the intratumor support umbrella 21 and the extratumor support umbrella 11 are completely bulged out, and are now in an expanded state. In the expanded state, the side wall of the intratumor support umbrella 21 is fully fitted with the inner side wall of the tumor cavity to achieve the fixation of the intratumor support umbrella 21; at the same time, the side wall of the extratumor support umbrella 11 is fully fitted with the outer side wall of the tumor cavity opening to achieve the fixation of the extratumor support umbrella 11. The extratumor support umbrella 11 and the intratumor support umbrella 21 are connected together by the distal guide wire 3. By setting the intratumor support umbrella 21, the extratumor support umbrella 11 and the distal guide wire 3, a stable structure is formed in which the extratumor support umbrella 11 and the intratumor support umbrella 21 clamp the inner and outer side walls of the tumor cavity opening, and the middle is connected by the distal guide wire 3, which can be stably fixed at the tumor cavity opening. The design of the inner and outer layers of the protective umbrella makes the connection between the device and the tumor cavity opening more stable, and can also reduce the risk of the spring coil escaping from the protective umbrella, and reduce the probability of surgical complications.

[0065] The intratumor support umbrella 21 can also be fixed to the distal guide wire 3 by bonding or hot-melt connection, and the extratumor support umbrella 11 can also be fixed to the distal guide wire 3 by bonding or hot-melt connection. The opening sizes of the intratumor support umbrella 21 and the extratumor support umbrella 11 are gradually expanded from the tumor cavity opening to the side away from the tumor cavity opening. After the intratumor support umbrella 21 and the extratumor support umbrella 11 are released, the delivery guide wire 4 and the distal guide wire 3 are released by rotating the delivery guide wire 4, making the release step convenient and quick.

[0066] In a preferred embodiment of the present invention, the intratumor support umbrella 21 is disc-shaped in the expanded state. The intratumor support umbrella 21 gradually increases the contact area with the inner wall of the tumor cavity opening during the expansion process, and fits more closely with the inner wall of the tumor cavity opening, which can effectively increase the contact area with the inside of the tumor cavity.

[0067] In other embodiments of the present invention, the intra-tumor anti-skid membrane 22 is a rubber membrane, and the rubber material can effectively increase the friction resistance, thereby improving the installation stability.

[0068] Furthermore, the extratumor support umbrella 11 and the intratumor support umbrella 21 are both components made of memory alloy wire. The extratumor support umbrella 11 and the intratumor support umbrella 21 are preferably woven with nickel-titanium alloy wire, which has shape memory function and can automatically return to the initial state after release.

[0069] In a preferred embodiment of the present invention, a connecting component 5 is provided at the connection between the distal guide wire 3 and the delivery guide wire 4, and the connecting component 5 includes an external thread 51 arranged on the distal side wall of the delivery guide wire 4, and a connecting block 52 arranged at the proximal end of the distal guide wire 3, and an internal thread groove 53 adapted to the external thread 51 is arranged in the connecting block 52, and the proximal guide wire is threadedly connected to the connecting block 52.

[0070] Example 2

[0071] See also Figures 2 to 5 The difference between this embodiment and embodiment 1 is that the distal end of the distal guide wire 3 is provided with a shaping portion 31, and the shaping portion 31 is in the shape of an arc or a ring. The shaping portion 31 is preferably in the shape of a ring, and the ring-shaped setting is used to reduce the sharpness of the distal end of the distal guide wire 3, make the distal end of the distal guide wire 3 flexible, and reduce the possibility of the distal guide wire 3 entering the tumor cavity and puncturing the inner wall of the tumor cavity.

[0072] Example 3

[0073] See also Figures 2 to 5 On the basis of Example 1, this embodiment further describes the intratumor support umbrella 21 and the extratumor support umbrella 11. In the preferred embodiment of the present invention, an intratumor anti-skid film 22 is provided on the side wall of the intratumor support umbrella 21 close to the opening of the tumor cavity, and the intratumor anti-skid film 22 fits the inner wall of the tumor body in the expanded state. The intratumor anti-skid film 22 is connected to the proximal side wall of the intratumor support umbrella 21 by bonding. The function of the intratumor anti-skid film 22 is to increase the contact area between the intratumor support umbrella 21 and the side wall of the tumor body, increase the surface friction resistance, and thus improve the installation stability of the intratumor support umbrella 21. At the same time, the intratumor anti-skid film 22 can reduce the gap between the intratumor support umbrella 21 and the side wall of the tumor body, and reduce the amount of blood flowing into the tumor cavity. The intratumor anti-skid film 22 is preferably a silicone film, which has good biocompatibility, can remain stable in the in vivo environment, and reduce the impact on the in vivo environment. The silicone material has a certain ductility and can be deformed as the intratumor support umbrella 21 expands.

[0074] An extratumor sealing film 12 is provided on the side wall of the extratumor support umbrella 11 near the opening of the tumor cavity. The extratumor sealing film 12 can be made of medical silicone or TPE material, which has good biocompatibility and has little impact on the internal environment. When the extratumor support umbrella 11 is in an expanded state, the extratumor sealing film 12 can better abut against the side wall of the tumor cavity to prevent blood from flowing into the tumor cavity.

[0075] In summary: the present invention forms an "I" shape at the tumor cavity as a whole by setting an intratumor support umbrella 21, an extratumor support umbrella 11 and a distal guide wire 3, fixing both sides of the tumor cavity opening, thereby improving the stability of the support umbrella during installation, reducing the possibility of blood flow driving the support umbrella to shift, preventing blood from flowing into the tumor cavity, and improving the use effect of the device.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aneurysm occlusion device, characterized in that: It comprises an extra-tumor blocking component (1) and an intra-tumor blocking component (2); A distal guide wire (3) used for connecting the extra-tumor blocking component (1) and the intra-tumor blocking component (2); The intratumor blocking component (2) comprises an intratumor support umbrella (21) disposed at the distal end of the distal guide wire (3), and the extratumor blocking component (1) comprises an extratumor support umbrella (11) disposed at the proximal end of the distal guide wire (3). The intratumor support umbrella (21) abuts against the inner wall of the tumor cavity opening in the expanded state, and the extratumor support umbrella (11) abuts against the outer wall of the tumor cavity opening in the expanded state.

2. The aneurysm occlusion device according to claim 1, characterized in that: The extra-tumor support umbrella (11) and the intra-tumor support umbrella (21) are disc-shaped in the expanded state.

3. The aneurysm occlusion device according to claim 1, characterized in that: An intra-tumor anti-slip membrane (22) is provided on the side wall of the intra-tumor support umbrella (21) close to the tumor cavity opening, and the intra-tumor anti-slip membrane (22) adheres to the inner wall of the tumor body in an expanded state.

4. The aneurysm occlusion device according to claim 1, characterized in that: The extra-tumor support umbrella (11) and the intra-tumor support umbrella (21) are both components made of memory alloy wire.

5. The aneurysm occlusion device according to claim 4, characterized in that: An extra-tumor sealing membrane (12) is provided on the side wall of the extra-tumor supporting umbrella (11) close to the tumor cavity opening.

6. The aneurysm occlusion device according to claim 1, characterized in that: It also comprises a delivery guide wire (4), wherein the delivery guide wire (4) is detachably connected to the distal guide wire (3).

7. The aneurysm occlusion device according to claim 6, characterized in that: A connecting assembly (5) is provided at the connection between the distal guide wire (3) and the delivery guide wire (4), and the connecting assembly (5) comprises an external thread (51) provided on the distal side wall of the delivery guide wire (4), and a connecting block (52) provided at the proximal end of the distal guide wire (3), wherein an internal thread groove (53) matching the external thread (51) is provided in the connecting block (52), and the proximal guide wire is threadedly connected to the connecting block (52).

8. The aneurysm occlusion device according to claim 6, characterized in that: The conveying guide wire (4) is provided with a developing portion (41).

9. An aneurysm occlusion device according to any one of claims 1 to 7, characterized in that: The distal end of the distal guide wire (3) is provided as a shaping portion (31), and the shaping portion (31) is in the shape of an arc or a circular ring.

10. The aneurysm occlusion device according to claim 9, characterized in that: The distal guide wire (3) is provided with a developing spring (32) located at the proximal end of the shaping portion (31).

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