Intracranial aneurysm plugging device

Abstract

The invention provides an intracranial aneurysm plugging device, and belongs to the technical field of interventional medical instruments. An intracranial aneurysm plugging device comprises an intra-aneurysm part, an extra-aneurysm plugging part, a connecting part, a conveying guide wire and a conveying catheter, the intra-aneurysm part and the extra-aneurysm plugging part both have a contraction state and an expansion state, and the intra-aneurysm part is arranged in an inner cavity of a aneurysm body; the outside-tumor plugging part is used for pressing the outer side wall of the tumor body inlet; the connecting part is arranged between the in-tumor part and the out-tumor plugging part and is used for connecting the in-tumor part and the out-tumor plugging part; the out-tumor plugging part can move on the connecting part so as to adjust the distance between the out-tumor plugging part and the in-tumor part; the far end of the conveying guide wire is detachably and fixedly connected with the near end of the connecting part; the conveying catheter is used for containing the in-tumor part and the out-tumor plugging part in a compressed state; the intracranial aneurysm treatment device is used for solving the technical problems that an existing intracranial aneurysm treatment device cannot effectively prevent blood flow from further flowing into a tumor body, and the tumor body is damaged.

Description

Technical Field

[0001] The present invention belongs to the technical field of interventional medical devices, and in particular relates to an intracranial 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:

[0004] (1) Surgical treatment, including aneurysm neck clipping, aneurysm neck ligation, incision and suture of giant aneurysms, etc. However, this treatment method causes great damage to the patient's body.

[0005] (2) Medical drug treatment, which involves giving patients oral or injected drugs to control potential risk factors that can induce aneurysm rupture, such as controlling the patient's blood pressure. However, this treatment method has a long treatment cycle and slow effects.

[0006] (3) Minimally invasive interventional treatment, such as coil packing of the aneurysm cavity, liquid glue packing of the aneurysm cavity, and stent-assisted packing, has been widely promoted for its significant therapeutic effects achieved through minimally invasive treatment methods.

[0007] 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 thus 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, a device for plugging an intracranial aneurysm 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.

[0008] 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.

[0009] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0010] The purpose of the present invention is to provide an intracranial aneurysm occluding device to solve the technical problem that the existing intracranial aneurysm treatment device cannot effectively prevent blood from further flowing into the aneurysm body and causes damage to the aneurysm body.

[0011] In order to achieve the above-mentioned purpose, the intracranial aneurysm occlusion device of the present invention provides the following technical solutions:

[0012] An intracranial aneurysm occlusion device, comprising:

[0013] An intratumor component, which has a contracted state and an expanded state and is placed in the inner cavity of the tumor;

[0014] An external tumor blocking component, which has a contracted state and an expanded state and is used to compress the outer side wall of the tumor entrance;

[0015] A connecting component, which is disposed between the intra-tumor component and the extra-tumor blocking component and is used to connect the intra-tumor component and the extra-tumor blocking component;

[0016] A delivery guidewire, the distal end of which is detachably fixedly connected to the proximal end of the connecting component, and is used to release the intra-tumor component and the extra-tumor blocking component;

[0017] The delivery catheter is used to contain the intra-tumor components and the extra-tumor blocking components in a compressed state, and to deliver the intra-tumor components and the extra-tumor blocking components to a set position.

[0018] As a further optimized technical solution, the proximal end of the intratumor component has a first developing ring, and the distal end of the extratumor blocking component has a second developing ring, which are used to display the distance between the intratumor component and the extratumor blocking component.

[0019] As a further optimized technical solution, the connecting component is a screw structure, the distal end of which is rotationally connected to the intra-tumor component, and the proximal end of which passes through the middle of the extra-tumor blocking component and is threadedly connected to the extra-tumor blocking component.

[0020] As a further optimized technical solution, a sealing film is provided on the extratumor blocking component to prevent blood from flowing into the tumor.

[0021] As a further optimized technical solution, the sealing membrane is arranged on the side of the tumor-external blocking component facing the tumor-internal component after the tumor-external blocking component expands.

[0022] As a further optimized technical solution, the proximal end of the connecting component and the distal end of the delivery guidewire have a connecting structure, which can axially connect the connecting component and the delivery guidewire, and circumferentially prevent the delivery guidewire and the connecting component from rotating relative to each other.

[0023] As a further optimized technical solution, the connecting structure has a protrusion and a groove with a polygonal cross-section. The shape of the groove is adapted to the protrusion. The groove is arranged on the end face of the proximal end of the connecting component, and the corresponding protrusion is arranged on the end face of the distal end of the delivery guide wire. The protrusion is used to penetrate into the groove and connect with the groove.

[0024] As a further optimized technical solution, a first magnetic block is arranged in the groove, and a second magnetic block that can interact with the first magnetic block is arranged in the corresponding protrusion, so as to ensure the rapid disassembly and assembly of the protrusion and the groove.

[0025] As a further optimized technical solution, an electromagnetic coil is spirally wound around the outer side of the second magnetic block so that the magnetism of the second magnetic block can be controlled.

[0026] As a further optimized technical solution, the extra-tumor blocking component is in a disc shape in the expanded state.

[0027] Beneficial effects: When the intracranial aneurysm occluding device of the present invention is in use, the components inside the aneurysm are released inside the aneurysm to disturb the blood flow inside the aneurysm, and the components outside the aneurysm are released outside the aneurysm and press the outer wall of the aneurysm entrance, thereby preventing external blood from continuing to flow into the aneurysm, and the components outside the aneurysm can move on the connecting component to adjust the distance between the components inside the aneurysm, to ensure that the components inside the aneurysm and the components outside the aneurysm tighten the side wall at the aneurysm entrance, to ensure the stability of the components inside the aneurysm and the components outside the aneurysm during treatment, even if the blood flow impacts the components outside the aneurysm, the components outside the aneurysm will only be closer to the outer wall of the aneurysm entrance, thereby making the aneurysm entrance more tightly sealed, making it more difficult for blood to flow into the interior of the aneurysm, thereby ensuring the treatment effect; in addition, because the components inside the aneurysm and the components outside the aneurysm are stably clamped on the side wall of the aneurysm entrance by the connecting component, when the blood flow impacts the components outside the aneurysm, the components outside the aneurysm will no longer excessively squeeze the components inside the aneurysm, thereby improving the safety of the aneurysm during treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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:

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the expansion state of the intra-tumor component and the extra-tumor blocking component according to one embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of the assembly relationship between the connecting component and the first developing ring and the second developing ring according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the assembly relationship between the delivery guide wire and the connecting component according to an embodiment of the present invention;

[0033] Figure 5 An end view of the distal end of a delivery guide wire according to an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of a release process according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the expansion state of the intra-tumor component and the extra-tumor blocking component according to another embodiment of the present invention.

[0036] In the figure: 1. Intratumor components; 2. Extratumor blocking components; 3. Connecting components; 4. Delivery guide wire; 5. Delivery catheter; 6. First developing ring; 7. Second developing ring; 8. Sealing film; 9. Connecting structure; 901. Bump; 902. Groove; 10. Electromagnetic coil; 11. Tumor body. DETAILED DESCRIPTION

[0037] 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.

[0038] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. In addition, the term "proximal end" uniformly refers to the end close to the operator, and the "distal end" refers to the end away from the operator.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination 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.

[0040] The present invention provides an intracranial aneurysm occluding device. By providing an intra-tumor component and an extra-tumor occluding component respectively installed inside and outside the aneurysm, the intra-tumor component and the extra-tumor occluding component can adjust the distance between each other through a connecting component so as to be clamped together on the side wall of the aneurysm, thereby effectively preventing blood from further flowing into the aneurysm and reducing the probability of the risk of the aneurysm being squeezed by a spring coil and ruptured during treatment.

[0041] Example 1

[0042] Specific as Figure 1 As shown, the intracranial aneurysm occluding device comprises an intra-tumor component 1 , an extra-tumor occluding component 2 , a connecting component 3 , a delivery guide wire 4 , and a delivery catheter 5 .

[0043] Both the intra-tumor component 1 and the extra-tumor blocking component 2 are mesh structures woven from memory metal alloy (eg, nickel-titanium alloy) wires, and both have a contracted state and an expanded state.

[0044] Figure 1 The compressed state of the intratumor component 1 and the extratumor occluding component 2 is shown, in which state they can be conveniently stored at the distal end of the delivery catheter 5 for delivery. Figure 2 The expansion state of the intra-tumor component 1 and the extra-tumor blocking component 2 is shown. In this state, the intra-tumor component 1 is roughly in the shape of a sphere to fully fill the inner cavity of the tumor 11, which is used to change the blood flow field in the tumor 11, reduce the impact of blood on the inner wall of the tumor 11, and thus reduce the risk of aneurysm expansion. The extra-tumor blocking component 2 is in a disc shape in the expanded state, which is used to compress the outer wall of the entrance of the tumor 11 to fully fit and block the entrance of the tumor 11, while reducing the occupation of the intravascular space and reducing the impact on normal blood flow.

[0045] The connecting component 3 is arranged between the intra-tumor component 1 and the extra-tumor blocking component 2 and is used to connect the intra-tumor component 1 and the extra-tumor blocking component 2; the extra-tumor blocking component 2 can move on the connecting component 3 to adjust the distance between it and the intra-tumor component 1, and is used to clamp the intra-tumor component 1 and the extra-tumor blocking component 2 on the side wall of the tumor body 11.

[0046] like Figure 4 , Figure 5 As shown, the distal end of the delivery guide wire 4 is detachably fixedly connected to the proximal end of the connecting component 3, so as to release the intra-tumor component 1 and the extra-tumor blocking component 2.

[0047] The delivery catheter 5 is used to contain the intra-tumor component 1 and the extra-tumor blocking component 2 in a compressed state, and to deliver the intra-tumor component 1 and the extra-tumor blocking component 2 to a set position.

[0048] Specific as Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the proximal end of the intratumor component 1 is integrally fixedly connected with a first developing ring 6, and the distal end of the extratumor blocking component 2 is integrally fixedly connected with a second developing ring 7. The two developing rings can facilitate the doctor to determine the specific positions of the intratumor component 1 and the extratumor blocking component 2 during the operation, and when adjusting the distance between the intratumor component 1 and the extratumor blocking component 2, it is convenient to more intuitively display the change in the distance between the intratumor component 1 and the extratumor blocking component 2.

[0049] In this embodiment, the connecting component 3 is a screw structure, the distal end of the screw structure is rotatably connected to the first developing ring 6 of the intra-tumor component 1, and the proximal end of the screw passes through the middle of the extra-tumor sealing component 2 and is threadedly connected to the second developing ring 7 of the extra-tumor sealing component 2.

[0050] In this way, when releasing the intra-tumor component 1 and the extra-tumor blocking component 2, the delivery catheter 5 carries the intra-tumor component 1 and the extra-tumor blocking component 2 in a compressed state and pushes them to the position of the tumor body 11, then keeps the delivery guide wire 4 in position, pulls the delivery catheter 5 backward (i.e., proximal end) until the intra-tumor component 1 is released into the tumor body 11, then keeps the delivery catheter 5 stationary, and rotates the delivery guide wire 4 circumferentially. At this time, the delivery guide wire 4 drives the connecting component 3 to rotate synchronously. Since the extra-tumor blocking component 2 is compressed in the delivery catheter 5, the tension of the extra-tumor blocking component 2 causes the extra-tumor blocking component 2 to press against the inner wall of the delivery catheter 5. Under the constraint of the delivery catheter 5, it will not rotate synchronously with the connecting component 3. Due to the rotation of the connecting component 3, the second developing ring 7 is threadedly connected to the connecting component 3. Therefore, the extra-tumor blocking component 2 moves axially along the connecting component 3 with the second developing ring 7, thereby adjusting the distance between the extra-tumor blocking component 2 and the intra-tumor component 1. When the distance between the second developing ring 7 and the first developing ring 6 is adjusted to meet the set requirements, the delivery catheter 5 is pulled backward to release the extra-tumor blocking component 2, and then the connection between the distal end of the delivery guide wire 4 and the proximal end of the connecting component 3 is disconnected, and the delivery guide wire 4 is withdrawn from the patient's body.

[0051] In the above technical solution, since the extratumoral blocking component 2 is a mesh structure, it is difficult to ensure that blood is completely prevented from passing through. If the mesh is processed small enough to prevent blood from passing through, the overall weight and compressed volume of the extratumoral blocking component 2 will inevitably increase. Among them, the increase in weight will increase the patient's rejection reaction, and the increase in volume after compression will make it difficult for the extratumoral blocking component 2 to be placed in the delivery catheter 5 after compression, and it is difficult to be pushed out from the delivery catheter 5. Therefore, such operation will increase the difficulty of releasing the extratumoral blocking component 2. In order to solve this technical problem, in this embodiment, a sealing film 8 is provided on the extratumoral blocking component 2 to prevent blood from flowing into the tumor body 11. In this embodiment, the sealing film 8 can be made of medical silicone or TPE material.

[0052] Furthermore, the sealing film 8 is adhered and fixed to the side of the expanded outer sealing component 2 facing the inner component 1. In this way, when the outer sealing component 2 presses the side wall of the tumor body 11, the sealing film 8 fully presses the tumor body 11, thereby further improving the sealing performance between the sealing film 8 and the entrance of the tumor body 11.

[0053] like Figure 3 , Figure 4 , Figure 5 As shown, the proximal end of the connecting component 3 and the distal end of the delivery guide wire 4 have a connecting structure 9, and the distal end of the delivery guide wire 4 and the proximal end of the connecting component 3 are detachably fixedly connected through the connecting structure 9. The connecting structure 9 can axially connect the connecting component 3 and the delivery guide wire 4, and can circumferentially prevent the delivery guide wire 4 and the connecting component 3 from rotating relative to each other.

[0054] Specifically, the connecting structure 9 has a protrusion 901 and a groove 902 with a polygonal cross-section. The shape of the groove 902 is adapted to the protrusion 901. The groove 902 is arranged on the end face of the proximal end of the connecting component 3, and the corresponding protrusion 901 is arranged on the end face of the distal end of the delivery guide wire 4. The protrusion 901 is used to penetrate into the groove 902 to connect with the groove 902.

[0055] In this embodiment, the cross-section of the protrusion 901 is a quadrilateral. In other embodiments, the cross-section of the protrusion 901 may also be a triangle, a pentagon, a hexagon, etc. As long as the circumferential stop between the delivery guide wire 4 and the connecting component 3 can be achieved, the purpose of the invention of this scheme can be achieved.

[0056] In the above technical solution, the protrusion 901 can be fixed with the groove 902 by snapping when connected, but the snapping method is not easy to disassemble. In order to facilitate the installation and removal of the protrusion 901 and the groove 902, a first magnetic block is arranged in the groove 902, and a second magnetic block that can interact with the first magnetic block is arranged in the corresponding protrusion 901, so as to realize the rapid disassembly of the protrusion 901 and the groove 902.

[0057] Furthermore, an electromagnetic coil 10 can be spirally wound outside the second magnetic block so that the magnetism of the second magnetic block can be controlled. And the magnetic pole of the second magnetic block at the position of the protrusion 901 can be changed by changing the current direction of the electromagnetic coil 10, so that the installation and removal operation is more convenient. For example, when connecting the conveying guide wire 4 and the connecting component 3, the magnetic pole of the second magnetic block in the protrusion 901 is opposite to the magnetic pole of the first magnetic block in the groove 902. At this time, once the protrusion 901 is close to the groove 902, it can be attracted to the groove 902 to quickly enter the groove 902, so that quick installation can be achieved. During the surgical operation, the current of the electromagnetic coil 10 can be increased to ensure that the delivery guide wire 4 is stably connected to the connecting component 3. After the intra-tumor component 1 and the extra-tumor blocking component 2 are released, the current direction of the electromagnetic coil 10 is changed so that the magnetic pole of the second magnetic block in the protrusion 901 is the same as the magnetic pole of the first magnetic block in the groove 902. At this time, the protrusion 901 and the groove 902 repel each other, thereby achieving a quick disconnection of the connection between the delivery guide wire 4 and the connecting component 3.

[0058] like Figure 6 As shown, the specific method of using the present invention is as follows:

[0059] In the first step, the intratumoral component 1 and the extratumoral blocking component 2 are compressed into the distal end of the delivery catheter 5, and the delivery guide wire 4 and the connecting component 3 are connected, as shown in FIG. Figure 6 As shown in (a) , the delivery catheter 5 carries the compressed intra-tumor component 1 and the extra-tumor blocking component 2 and pushes them to the tumor body 11 .

[0060] The second step is, Figure 6 As shown in (b) , the delivery guide wire 4 is kept in position and the delivery catheter 5 is pulled backward until the intratumoral component 1 is gradually released into the tumor body 11 .

[0061] The third step is Figure 6 As shown in (c), after the intratumor component 1 is completely released into the tumor body 11, the delivery catheter 5 is kept stationary, the delivery guide wire 4 is rotated circumferentially, and the extratumor blocking component 2 moves axially along the connecting component 3 with the second developing ring 7, thereby adjusting the distance between the extratumor blocking component 2 and the intratumor component 1.

[0062] In the fourth step, after the distance between the second developing ring 7 and the first developing ring 6 is adjusted to meet the set requirements, the delivery catheter 5 is pulled backward to release the tumor-external blocking component 2, and then the connection between the distal end of the delivery guide wire 4 and the proximal end of the connecting component 3 is disconnected, and the delivery guide wire 4 is withdrawn from the patient's body. The tumor-external blocking component 2 is blocked at the entrance position of the tumor body 11, as shown in FIG. Figure 6 As shown in (d) in .

[0063] Example 2

[0064] like Figure 7As shown, this embodiment provides an intra-tumor component 1 that presents different shapes after expansion. Except for the shape of the expanded intra-tumor component 1, the other structures of this embodiment are the same as those of embodiment 1, and are not repeated here. In this embodiment, the intra-tumor component 1 is disc-shaped after expansion. At this time, the disc-shaped intra-tumor component 1 and the extra-tumor blocking component 2 are used together to support and block the entrance of the tumor body.

[0065] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0066] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. An intracranial aneurysm occlusion device, characterized in that: include: An intratumor component (1), wherein the intratumor component (1) has a contracted state and an expanded state and is placed in the inner cavity of the tumor body (11); An external tumor blocking component (2), the external tumor blocking component (2) having a contracted state and an expanded state, and used for pressing the outer side wall of the entrance of the tumor body (11); A connecting component (3), the connecting component (3) being arranged between the intra-tumor component (1) and the extra-tumor blocking component (2) and being used to connect the intra-tumor component (1) and the extra-tumor blocking component (2); A delivery guide wire (4), the distal end of the delivery guide wire (4) being detachably fixedly connected to the proximal end of the connecting component (3) and used for releasing the intratumor component (1) and the extratumor blocking component (2); The delivery catheter (5) is used to contain the intra-tumor component (1) and the extra-tumor blocking component (2) in a compressed state, and to deliver the intra-tumor component (1) and the extra-tumor blocking component (2) to a set position.

2. The intracranial aneurysm occlusion device according to claim 1, characterized in that: The proximal end of the intratumor component (1) is provided with a first developing ring (6), and the distal end of the extratumor blocking component (2) is provided with a second developing ring (7), which are used to display the distance between the intratumor component (1) and the extratumor blocking component (2).

3. The intracranial aneurysm occlusion device according to claim 1, characterized in that: The connecting component (3) is a screw structure, the distal end of which is rotationally connected to the intratumor component (1), and the proximal end of which passes through the middle of the extratumor blocking component (2) and is threadedly connected to the extratumor blocking component (2).

4. The intracranial aneurysm occlusion device according to claim 3, characterized in that: The extratumor blocking component (2) is provided with a sealing film (8) for preventing blood from flowing into the interior of the tumor (11).

5. The intracranial aneurysm occlusion device according to claim 4, characterized in that: The sealing film (8) is arranged on the side of the outer tumor blocking component (2) facing the inner tumor component (1) after the outer tumor blocking component (2) is expanded.

6. The intracranial aneurysm occlusion device according to any one of claims 1 to 5, characterized in that: The proximal end of the connecting component (3) and the distal end of the conveying guide wire (4) are provided with a connecting structure (9), which can axially connect the connecting component (3) and the conveying guide wire (4), and circumferentially prevent the conveying guide wire (4) and the connecting component (3) from rotating relative to each other.

7. The intracranial aneurysm occlusion device according to claim 6, characterized in that: The connection structure (9) comprises a protrusion (901) and a groove (902) with a polygonal cross section. The shape of the groove (902) matches the protrusion (901). The groove (902) is arranged on the end surface of the proximal end of the connection component (3). The corresponding protrusion (901) is arranged on the end surface of the distal end of the delivery guide wire (4). The protrusion (901) is used to penetrate into the groove (902) and connect with the groove (902).

8. The intracranial aneurysm occlusion device according to claim 7, characterized in that: A first magnetic block is arranged in the groove (902), and a second magnetic block capable of interacting with the first magnetic block is arranged in the corresponding protrusion (901), so as to ensure rapid disassembly and assembly of the protrusion (901) and the groove (902).

9. The intracranial aneurysm occlusion device according to claim 8, characterized in that: An electromagnetic coil (10) is spirally wound outside the second magnetic block, so that the magnetism of the second magnetic block can be controlled.

10. The intracranial aneurysm occlusion device according to any one of claims 1 to 5, characterized in that: The extra-tumor blocking component (2) is in a disc shape when in an expanded state.

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