Tumor neck opening closing member and tumor neck opening closing device

Abstract

The invention provides a tumor neck opening closing component and a tumor neck opening closing device.The tumor neck opening closing component comprises a clamping piece used for clamping the edge of a tumor neck opening, the clamping piece comprises a connecting part, an intra-tumor clamping part and an extra-tumor clamping part, the intra-tumor clamping part and the extra-tumor clamping part are connected to the two opposite ends of the connecting part, the intra-tumor clamping part is used for acting on the inner wall of an aneurysm, and the extra-tumor clamping part is used for acting on the inner wall of the aneurysm; the external tumor clamping part is used for acting on the inner wall of a tumor-carrying artery; the driving piece is used for applying a driving force for gathering the connecting parts to the connecting parts; the tumor neck opening can be closed to embolize the aneurysm only by placing the tumor neck opening closing component at the tumor neck opening, other instruments do not need to be placed repeatedly, the embolism effect is good, operation is easy and convenient, and the surgical risk is small.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a closure component and a closure device for a tumor neck opening. Background Technology

[0002] An aneurysm is a very common vascular disease caused by lesions or damage to the arterial wall, resulting in localized or diffuse dilation or bulging of the arterial wall. It is characterized by a pulsatile, throbbing mass and can occur anywhere in the arterial system. Rupture of an aneurysm can have serious consequences. For example, a ruptured intracranial aneurysm can cause subarachnoid hemorrhage, which in severe cases can lead to vasospasm, causing extensive cerebral infarction, resulting in hemiplegia and coma, seriously endangering the patient's life.

[0003] Currently, the main treatment options for aneurysms in clinical practice are open surgery and endovascular interventional therapy. Open surgery requires opening the body cavity surrounding the aneurysm, such as craniotomy or thoracotomy, causing significant damage to the patient and resulting in a long recovery period. In contrast, endovascular interventional therapy, with its minimally invasive, safe, and effective advantages, has become the preferred clinical treatment option for many medical experts.

[0004] Currently, endovascular interventional treatment techniques for aneurysms mainly include stent-assisted coil embolization and flow diverter (FD) devices. Stent-assisted coil embolization requires the use of several coils plus a stent. The placement of the coils necessitates strict consideration of the coil release pattern, location, and size, as well as the timing and location of stent release, making it a difficult and challenging procedure to master. Meanwhile, FD devices can be several times more expensive than coil embolization and also have a certain recurrence rate. Summary of the Invention

[0005] The purpose of this invention is to provide a neck closure component and a neck closure device. When treating aneurysms, only one neck closure component needs to be placed at the neck of the aneurysm, without the need to repeatedly insert other instruments. The embolization effect is good, the operation is simple, and the surgical risk is low.

[0006] To address the above problems, the present invention provides a neck closure component, comprising:

[0007] A clamping member for holding the edge of the aneurysm neck, the clamping member including a connecting part, an intra-aneurysm clamping part connected to opposite ends of the connecting part and an extra-aneurysm clamping part, the intra-aneurysm clamping part being used to act on the inner wall of the aneurysm, and the extra-aneurysm clamping part being used to act on the inner wall of the aneurysm-bearing artery;

[0008] A driving member, which applies a driving force to the connecting portion to bring the connecting portion together.

[0009] As an optional technical solution, the driving component is a clamping ring sleeved on the outer periphery of the connecting part, and the inner diameter of the clamping ring is adjustable.

[0010] As an optional technical solution, the clamping ring is an elastic clamping ring; the clamping member has a fixing structure for pre-fixing the elastic clamping ring;

[0011] The neck closure member has a delivery state located inside the delivery catheter and a clamping state located outside the delivery catheter. In the delivery state, the elastic band ring is fixed to the fixing structure, and the intratumoral clamping part and the extratumoral clamping part are elongated at opposite ends of the connecting part. In the clamping state, the elastic band ring is sleeved on the outer periphery of the connecting part, and the intratumoral clamping part and the extratumoral clamping part are both outwardly expanded in the direction away from the connecting part.

[0012] As an optional technical solution, the fixing structure includes a first hook portion located on the outside of the intratumoral clamping portion and a second hook portion located on the outside of the extratumoral clamping portion, wherein the first hook portion and the second hook portion are located on opposite sides of the clamping member in the circumferential direction; during the process of the tumor neck closure member switching from the conveying state to the clamping state, the elastic bundle ring disengages from the fixing structure.

[0013] As an optional technical solution, the first hook and the second hook are protrusions.

[0014] As an optional technical solution, the clamping member includes:

[0015] A plurality of clamping rods are spaced apart in a clockwise or counterclockwise direction. The clamping rods include intratumoral clamping rods, extratumoral clamping rods, and connecting rods connecting the intratumoral clamping rods and the extratumoral clamping rods. At least a portion of the clamping rods are imaging rods.

[0016] Intratumor connecting ribs that connect the intratumoral clamping rods;

[0017] External connecting ribs that connect the external clamping rods;

[0018] A plurality of intratumoral clamping rods and intratumoral connecting ribs form the intratumoral clamping portion, a plurality of extratumoral clamping rods and extratumoral connecting ribs form the extratumoral clamping portion, and a plurality of connecting rods form the connecting portion.

[0019] As an optional technical solution, the distance between two adjacent intratumoral connecting ribs gradually increases in the direction away from the connecting portion; the distance between two adjacent extratumoral connecting ribs gradually increases in the direction away from the connecting portion.

[0020] As an optional technical solution, both the intratumoral clamping part and the extratumoral clamping part are annular, and the plurality of clamping rods are evenly spaced along the circumference of the clamping member.

[0021] As an optional technical solution, both the intratumoral clamping part and the extratumoral clamping part include two clamping parts arranged in a centrally symmetrical manner. The intratumoral connecting ribs and the extratumoral connecting ribs near the connecting part are annular, while the intratumoral connecting ribs and the extratumoral connecting ribs away from the connecting part are arc-shaped and adapted to the corresponding clamping parts.

[0022] To achieve the above-mentioned objectives, the present invention also provides a neck closure device, including the aforementioned neck closure component.

[0023] Compared with the prior art, the aneurysm neck closure component of the present invention, by setting a clamping member for clamping the edge of the aneurysm neck and a driving member for converging the connecting part of the clamping member, only needs to be placed at the aneurysm neck to close the aneurysm neck for embolization treatment, without the need to repeatedly insert other instruments, with good embolization effect, simple operation and low surgical risk. Attached Figure Description

[0024] Figure 1 This is a partial structural schematic diagram of the neck closure device in the present invention (wherein, the neck closure component extends out of the delivery catheter);

[0025] Figure 2 This is a schematic diagram of the structure of the neck closure member in the first embodiment of the present invention (the neck closure member is in a clamping state);

[0026] Figure 3 for Figure 2 A schematic diagram of the structure of the aneurysm neck closure component located at the aneurysm.

[0027] Figure 4 This is a schematic diagram of the neck closure member in the second embodiment of the present invention (the neck closure member is in a clamping state). Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the following detailed embodiments and appendices are provided. Figures 1-4 The present invention will be further described in detail below. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] In this invention, terms describing position and direction are used with the surgical instrument operator as a reference, with the end closer to the operator being the proximal end and the end farther from the operator being the distal end. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Additionally, it should be noted that unless otherwise explicitly stated and limited, the term "connection" should be interpreted broadly; for example, a connection can be a direct connection or an indirect connection through an intermediate medium, a fixed connection, a movable connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] Please refer to Figures 1-3 As shown, the present invention provides a neck closure member 1 and a neck closure device 10 having the neck closure member 1. The neck closure device 10 includes the neck closure member 1 and a delivery system 2 for delivering the neck closure member 1 to the aneurysm 20 to close the neck of the aneurysm 20.

[0031] Specifically, the delivery system 2 includes a delivery catheter and a guidewire. The delivery catheter is a long, thin tube used to guide the aneurysm 20 through a blood vessel, facilitating the subsequent delivery of the aneurysm neck closure member 1 to the aneurysm 20. The guidewire is used to push the aneurysm neck closure member 1, located within the delivery catheter, distally to the aneurysm 20 and release it at the appropriate location. A detachable connection mechanism is used between the distal end of the guidewire and the aneurysm neck closure member 1; this can be an electrically detachable structure or a conventional mechanically detachable structure, ensuring that the aneurysm neck closure member 1 can be safely and accurately deployed in the predetermined position.

[0032] It should be noted that the delivery system 2 is not limited to the delivery catheter and guidewire mentioned above; other instruments used in the specific delivery neck closure component 1 may also be included, which will not be elaborated here.

[0033] The aneurysm neck closure member 1 includes a clamping member 11 for clamping the edge of the aneurysm neck and a driving member. The clamping member 11 includes a connecting portion 113, an intra-aneurysm clamping portion 111 connected to opposite ends of the connecting portion 113, and an extra-aneurysm clamping portion 112. The intra-aneurysm clamping portion 111 acts on the inner wall of the aneurysm 20, and the extra-aneurysm clamping portion 112 acts on the inner wall of the parent artery 30. The driving member applies a driving force to the connecting portion 113 to bring the connecting portion 113 together. After the aneurysm neck closure member 1 is located at the aneurysm neck, the intra-aneurysm clamping part 111 acts on the inner wall of the aneurysm 20, and the extra-aneurysm clamping part 112 acts on the inner wall of the carrier artery 30. The intra-aneurysm clamping part 111 and the extra-aneurysm clamping part 112 cooperate to clamp the edge of the aneurysm neck. When the driving member drives the connecting part 113 to converge, it drives the intra-aneurysm clamping part 111 and the extra-aneurysm clamping part 112 to converge towards the middle of the aneurysm neck at the same time. This, in turn, drives the edge of the aneurysm neck clamped by the clamping member 11 to converge towards the middle of the aneurysm neck. That is, it drives the aneurysm walls on both sides of the aneurysm neck and the carrier artery walls to converge towards the aneurysm neck, reducing the area of ​​the aneurysm neck, so as to close the aneurysm neck and achieve the purpose of embolizing the aneurysm 20.

[0034] The aneurysm neck closure component 1 of the present invention only needs to be placed at the aneurysm neck opening to close the aneurysm neck opening for embolization treatment of the aneurysm 20. There is no need to repeatedly insert other instruments. The embolization effect is good, the operation is simple, and the surgical risk is low.

[0035] Specifically, the neck closure member 1 has a delivery state located inside the delivery catheter and a clamping state located outside the delivery catheter. In the delivery state, the intratumoral clamping part 111 and the extratumoral clamping part 112 are elongated at opposite ends of the connecting part 113. At this time, the intratumoral clamping part 111 extends distally from the distal end of the connecting part 113, and the extratumoral clamping part 112 extends proximally from the proximal end of the connecting part 113. The clamping member 11 is generally long and tubular. Figure 1 As shown, after the aneurysm neck closure component 1 is located distal to the delivery catheter, the guidewire is pushed to continue slowly pushing the aneurysm neck closure component 1 distally. First, the intra-aneurysm clamping part 111 gradually protrudes from the delivery catheter, and the outer diameter of the intra-aneurysm clamping part 111 expands and extends proximally to adhere to the inner wall of the aneurysm 20. After the extra-aneurysm clamping part 112 detaches from the delivery catheter, the outer diameter of the extra-aneurysm clamping part 112 expands, and the proximal end of the extra-aneurysm clamping part 112 extends distally to adhere to the inner wall of the parent artery 30 without causing damage to the inner wall of the parent artery 30. Figures 2-3 As shown, in the clamping state, both the intratumoral clamping part 111 and the extratumoral clamping part 112 are outwardly flared along the direction away from the connecting part 113, and the intratumoral clamping part 111 and the extratumoral clamping part 112 cooperate to form a clamp-like structure to clamp the edge of the tumor neck opening. At this time, the connecting part 113 is located at the tumor neck opening.

[0036] Specifically, the dimensions of the aneurysm neck closure member 1 in the clamping state can be set according to the specific dimensions of the aneurysm neck of the aneurysm 20. The dimensions of the aneurysm neck closure member 1 include, but are not limited to, the outer diameter of the end of the intra-aneurysm clamping portion 111 away from the connecting portion 113, the outer diameter of the end of the extra-aneurysm clamping portion 112 away from the connecting portion 113, and the inner diameter of the connecting portion 113. When selecting, the outer diameter of the end of the intra-aneurysm clamping portion 111 away from the connecting portion 113 and the outer diameter of the end of the extra-aneurysm clamping portion 112 away from the connecting portion 113 need to be larger than the diameter of the aneurysm neck.

[0037] In one specific embodiment, the clamping member 11 includes a plurality of clamping rods 114 spaced apart in a clockwise or counterclockwise direction, an intratumoral connecting rib 115, and an extratumoral connecting rib 116. Each clamping rod 114 includes an intratumoral clamping rod, an extratumoral clamping rod, and a connecting rod connecting the intratumoral and extratumoral clamping rods. The intratumoral connecting rib 115 connects the plurality of intratumoral clamping rods circumferentially along the clamping member 11, and the extratumoral connecting rib 116 connects the plurality of extratumoral clamping rods circumferentially along the clamping member 11. The plurality of intratumoral clamping rods and the intratumoral connecting rib 115 form an intratumoral clamping portion 111, the plurality of extratumoral clamping rods and the extratumoral connecting rib 116 form an extratumoral clamping portion 112, and the plurality of connecting rods form a connecting portion 113. At this time, when the neck closure member 1 is in the conveying state, the clamping rod 114 is straight; when the neck closure member 1 is in the clamping state, the clamping rod 114 is U-shaped. Of course, this is not the only option. In other embodiments, the clamping member 11 can also be configured as a diamond-shaped mesh structure.

[0038] Specifically, the clamping component 11 can be formed by laser cutting of the tube or by weaving of metal wire.

[0039] In some specific embodiments, the distance between two adjacent intratumoral connecting ribs 115 gradually increases in the direction away from the connecting portion 113; the distance between two adjacent extratumoral connecting ribs 116 gradually increases in the direction away from the connecting portion 113. This can reduce the deformation resistance of the intratumoral clamping portion 111 and the extratumoral clamping portion 112 at the end away from the connecting portion 113.

[0040] Combination Figures 2-3 As shown, in the first embodiment of the present invention, both the intratumoral clamping part 111 and the extratumoral clamping part 112 are annular, and a plurality of clamping rods 114 are evenly spaced along the circumference of the clamping member 11. At this time, the intratumoral connecting ribs 115 are annularly connected to the plurality of intratumoral clamping rods, and the extratumoral connecting ribs 116 are annularly connected to the plurality of extratumoral clamping rods. The clamping member 11 can clamp the entire periphery of the aneurysm neck opening, which is more conducive to the closure of the aneurysm neck opening and improves the embolization effect; at the same time, it can maintain the symmetrical balance of the aneurysm neck opening closure member 1.

[0041] Specifically, the number and diameter of the clamping rods 114, the internal connecting ribs 115, and the external connecting ribs 116 can be selected according to specific requirements. For example, in one specific embodiment, the clamping member 11 has 48 clamping rods 114, and a total of 16 internal and external connecting ribs 115 and 116. All clamping rods 114, internal connecting ribs 115, and external connecting ribs 116 are made of nickel-titanium wire or cobalt-chromium alloy wire with a diameter of 0.02 mm. That is, the clamping member 11 is woven from nickel-titanium wire or cobalt-chromium alloy wire with a diameter of 0.02 mm. Of course, this is not a limitation.

[0042] In some embodiments, at least a portion of the clamping rod 114 is a imaging rod, thereby enabling the neck closure member 1 to be visualized under DSA, and allowing the instrument operator to position the neck closure member 1.

[0043] In one specific embodiment, the 2 to 4 clamping rods 114 are developing rods, that is, the 2 to 4 clamping rods 114 are made of platinum-tungsten alloy or platinum-iridium alloy.

[0044] Combination Figure 4 As shown, this is the aneurysm neck closure member 1a in the second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that both the intra-aneurysm clamping part 111a and the extra-aneurysm clamping part 112a of the clamping member 11a include two clamping parts arranged in a centrally symmetrical manner. That is, the intra-aneurysm clamping part 111a includes two clamping parts arranged at intervals and in a centrally symmetrical manner, and the extra-aneurysm clamping part 112a includes two clamping parts arranged at intervals and in a centrally symmetrical manner. The two clamping parts in the intra-aneurysm clamping part 111a and the two clamping parts in the extra-aneurysm clamping part 112a correspond one-to-one. In the clamping state, the clamping parts have a fan-shaped structure. This is suitable for embolization of aneurysms 20 when the diameter of the carrier artery 30 is much smaller than the diameter of the aneurysm 20. In this case, after the aneurysm neck closure member 1a is implanted, the two clamping parts located in the carrier artery 30 are arranged along the extension direction of the carrier artery 30, which can prevent the aneurysm neck closure member 1a from rupturing the carrier artery 30.

[0045] It should be noted that the above-mentioned central symmetry means that the positions of the two clamping parts are approximately located on opposite sides of the center of the connecting part, and does not limit the shape of the two clamping parts to be completely identical. It is known that the neck closure member 1a has a certain degree of deformation uncertainty in clamping the edge of the neck, which may cause the two clamping parts in the clamping state to have slight differences in shape.

[0046] Specifically, the intratumoral connecting rib 115a and the extratumoral connecting rib 116a near the connecting portion 113a are annular, while the intratumoral connecting rib 115a and the extratumoral connecting rib 116a away from the connecting portion 113a are arc-shaped to match the corresponding clamping portions. The annular intratumoral connecting rib 115a connects two clamping portions in the intratumoral clamping portion 111a, and the annular extratumoral connecting rib 116a connects two clamping portions in the extratumoral clamping portion 112a, which can maintain the symmetrical balance of the aneurysm neck closure member 1a; at the same time, the intratumoral connecting rib 115a and the extratumoral connecting rib 116a away from the connecting portion 113a are non-annular, that is, the intratumoral connecting rib 115a or the extratumoral connecting rib 116a are only present at the clamping portion, which can prevent the aneurysm neck closure member 1a from rupturing the aneurysm-bearing artery 30.

[0047] Specifically, the number and diameter of the clamping rod 114, the internal connecting rib 115a, and the external connecting rib 116a can be selected according to specific needs.

[0048] The second embodiment of the present invention is the same as the first embodiment except for the differences mentioned above, and will not be repeated here.

[0049] In some specific embodiments, the driving member is a retaining ring 12 sleeved on the outer periphery of the connecting portion 113, and the inner diameter of the retaining ring 12 is adjustable. By reducing the inner diameter of the retaining ring 12, the connecting portions 113 can be driven to converge.

[0050] In one specific embodiment, the retaining ring 12 is an elastic retaining ring, such as an elastic retaining ring made of POE or highly elastic nylon. In this case, under the elastic restoring force of the elastic retaining ring, the connecting portions 113 and 113a converge, thereby causing the edges of the aneurysm opening held by the clamping members 11 and 11a to converge towards the center of the aneurysm opening, reducing the area of ​​the aneurysm opening and thus closing it. Of course, this is not a limitation.

[0051] Specifically, in the embodiment where the bundle ring 12 is an elastic bundle ring, the clamping members 11 and 11a have a fixing structure for pre-fixing the elastic bundle ring. In the delivery state, the elastic bundle ring is fixed to the fixing structure, and in the clamping state, the elastic bundle ring is sleeved on the outer periphery of the connecting parts 113 and 113a. That is, when the aneurysm neck closure members 1 and 1a are in the delivery state located inside the delivery catheter, the elastic bundle ring is pre-fixed to the clamping members 11 and 11a by the fixing structure. The elastic bundle ring and the clamping members 11 and 11a are delivered to the aneurysm 20 simultaneously, without the need for additional delivery components. The structure is simple and easy to operate.

[0052] In one specific embodiment, the fixing structure includes a first hook portion located outside the intratumoral clamping portions 111, 111a, and a second hook portion located outside the extratumoral clamping portions 112, 112a. The first hook portion and the second hook portion are located on opposite sides of the clamping members 11, 11a in the circumferential direction. In the delivery state, the elastic band is sleeved on the outer periphery of the clamping members 11, 11a, with one end of the elastic band hooked to the first hook portion and the other end hooked to the second hook portion. The elastic band is in a stretched state, thereby pre-fixing the elastic band and allowing the elastic band and clamping members 11, 11a to be delivered synchronously within the delivery catheter. During the process of the neck closure members 1, 1a switching from the delivery state to the clamping state, under the action of the elastic tension of the elastic band, the two ends of the elastic band slide off from the first hook portion and the second hook portion, respectively, and move to the connecting portions 113, 113a.

[0053] Specifically, the first hook and the second hook can be designed as protrusions. Of course, this is not a limitation.

[0054] In summary, the aneurysm neck closure components 1 and 1a of the present invention, by providing clamping members 11 and 11a for clamping the edge of the aneurysm neck and a driving member for driving the connecting part 113 in the clamping members 11 and 11a to converge, only need to place one aneurysm neck closure component 1 at the aneurysm neck to close the aneurysm neck for embolization treatment of the aneurysm 20, without the need to repeatedly insert other instruments, with good embolization effect, simple operation and low surgical risk.

[0055] The present invention has been described by the above-described embodiments; however, these embodiments are merely examples for implementing the present invention. Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other. It must be noted that the present invention may have many other embodiments, and those skilled in the art can make various corresponding changes and modifications based on the present invention without departing from its spirit and essence; however, all such corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. A neck finish closure member; characterized by, The aneurysm neck closure device comprises: a clamping member for clamping the edge of the aneurysm neck, the clamping member comprising a connecting portion, aneurysm-in clamping portions connected to opposite ends of the connecting portion, and aneurysm-out clamping portions; a driving member for applying a driving force to the connecting portion to make the connecting portion converge.

2. The finish neck closure member of claim 1, wherein: The driving member is a bundle ring sleeved on the outer periphery of the connecting portion, and the inner diameter of the bundle ring is adjustable.

3. The finish neck closure member of claim 2, wherein: The bundle ring is an elastic bundle ring; the clamping member has a fixing structure for pre-fixing the elastic bundle ring; The aneurysm neck closure member has a delivery state inside a delivery catheter and a clamping state outside the delivery catheter, in the delivery state, the elastic bundle ring is fixed to the fixing structure, the aneurysm-in clamping portions and the aneurysm-out clamping portions are in an elongated shape at opposite ends of the connecting portion; in the clamping state, the elastic bundle ring is sleeved on the outer periphery of the connecting portion, and the aneurysm-in clamping portions and the aneurysm-out clamping portions are all in an outward expanding shape in a direction away from the connecting portion.

4. The finish neck closure member of claim 3, wherein: The fixing structure comprises a first hook portion arranged on the outside of the aneurysm-in clamping portions and a second hook portion arranged on the outside of the aneurysm-out clamping portions, the first hook portion and the second hook portion are located on opposite sides of the clamping member in the circumferential direction; during the switching of the aneurysm neck closure member from the delivery state to the clamping state, the elastic bundle ring is separated from the fixing structure.

5. The finish neck closure member of claim 4, wherein: The first hook portion and the second hook portion are protrusions.

6. The finish neck closure member of claim 1, wherein, The clamping member comprises: a plurality of clamping rods arranged at intervals in a clockwise direction or an anticlockwise direction, the clamping rods comprising aneurysm-in clamping rods, aneurysm-out clamping rods, and connecting rods connecting the aneurysm-in clamping rods and the aneurysm-out clamping rods, at least part of the clamping rods being developing rods; aneurysm-in connecting ribs connecting the aneurysm-in clamping rods; aneurysm-out connecting ribs connecting the aneurysm-out clamping rods; the aneurysm-in clamping rods and the aneurysm-in connecting ribs form the aneurysm-in clamping portions, the aneurysm-out clamping rods and the aneurysm-out connecting ribs form the aneurysm-out clamping portions, and the connecting rods form the connecting portion.

7. The finish neck closure member of claim 6, wherein: In a direction away from the connecting portion, the distance between adjacent two aneurysm-in connecting ribs gradually increases; in a direction away from the connecting portion, the distance between adjacent two aneurysm-out connecting ribs gradually increases.

8. The finish neck closure member of claim 6, wherein: The aneurysm-in clamping portions and the aneurysm-out clamping portions are both annular, and the plurality of clamping rods are uniformly arranged at intervals in the circumferential direction of the clamping member.

9. The finish neck closure member of claim 6, wherein: The aneurysm-in clamping portions and the aneurysm-out clamping portions each comprise two clamping portions arranged in a central symmetry, the aneurysm-in connecting ribs and the aneurysm-out connecting ribs close to the connecting portion are annular, and the aneurysm-in connecting ribs and the aneurysm-out connecting ribs away from the connecting portion are in an arc shape matched with the corresponding clamping portions.

10. A tumor neck port closure device, characterized by: The aneurysm neck closure device comprises the aneurysm neck closure member according to any one of claims 1-9.

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