Turbulent flow device

Abstract

The utility model relates to the technical field of medical instruments, and discloses a turbulent flow device which comprises a supporting layer and a choked flow layer, the choked flow layer comprises an intra-tumor part and an extra-tumor part, the inner side of the intra-tumor part of the choked flow layer is attached to the outer side of the supporting layer, the extra-tumor part of the choked flow layer is folded to form a plugging disc, and the plugging disc is connected with the supporting layer. The near end of the supporting layer is fixedly connected with the near end of the flow blocking layer through a metal ring, the metal ring is located at the center of the near ends of the supporting layer and the flow blocking layer, the diameter of the intra-tumor part of the flow blocking layer is D1, the diameter of the plugging disc of the extra-tumor part of the flow blocking layer is D2, and D1 is smaller than or equal to D2. According to the utility model, the plugging disc is additionally arranged outside the aneurysm, most blood flow is blocked outside the plugging disc, and the blood flow state in the aneurysm is changed, so that the problem of thrombus caused by impact of the blood flow on the aneurysm wall is reduced, the recurrence probability of the aneurysm is reduced, the success rate of one-time treatment is improved, and the purpose of treating the aneurysm is achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically to a flow disturbance device. Background Technology

[0002] Minimally invasive interventional surgery is a common treatment for aneurysms, and it is playing an increasingly important role in the treatment of intracranial bifurcation aneurysms. Currently, the main treatment techniques for intracranial bifurcation aneurysms include surgical clipping and endovascular treatment. Compared to minimally invasive endovascular treatment, surgical clipping, while having a more definite effect by directly clipping the aneurysm and preventing blood from flowing into the aneurysm, requires opening the skull, resulting in greater trauma to the patient and a longer recovery time. This not only increases patient suffering but may also lead to a series of surgical trauma-related complications, such as infection and bleeding, significantly impacting the patient's health and quality of life.

[0003] With the continuous development of endovascular treatment devices and technologies, endovascular therapy has gradually become the mainstream treatment option for bifurcation intracranial aneurysms due to its minimally invasive advantages. Traditional endovascular treatment methods include stent-assisted embolization and balloon-assisted embolization. Stent-assisted embolization involves placing a stent in the parent artery to provide support for the embolic material, allowing it to better fill the aneurysm cavity. Balloon-assisted embolization uses a balloon to temporarily block blood flow at the neck of the aneurysm, facilitating the filling of the embolic material. However, implanting devices in the parent artery alters the normal hemodynamic environment within the blood vessel, easily leading to various complications such as thrombosis and vascular stenosis. Moreover, to prevent these complications, patients need to take anticoagulants and antiplatelet drugs long-term, which not only imposes an economic burden on patients but may also cause other adverse reactions due to long-term medication, such as increased bleeding tendency and liver and kidney damage.

[0004] The emergence of intra-aneurysmal flow disruptors represents a significant breakthrough in the treatment of aneurysms, expanding the concepts and procedures available. Previous treatment devices primarily targeted the artery bearing the aneurysm, while flow disruptors shift the focus to treating the aneurysm's opening. However, traditional flow disruptors cannot completely occlude aneurysms; the gap between the disruptor and the aneurysm's sidewall results in a low rate of occlusion under continuous blood flow. Utility Model Content

[0005] In view of this, the present invention provides a flow disturbance device that can change the blood flow state within the tumor, effectively improving the success rate of a single treatment.

[0006] To achieve the above objectives, the present invention provides a flow-disrupting device comprising a support layer and a flow-blocking layer. The flow-blocking layer includes an inner portion and an outer portion. The inner side of the inner portion of the flow-blocking layer is attached to the outer side of the support layer. The outer portion of the flow-blocking layer is folded to form a sealing disc. The proximal ends of the support layer and the proximal ends of the flow-blocking layer are fixedly connected by a metal ring located at the center of the proximal ends of the support layer and the flow-blocking layer. The diameter of the inner portion of the flow-blocking layer is D1, and the diameter of the sealing disc formed by the outer portion of the flow-blocking layer is D2, where D1 ≤ D2.

[0007] Preferably, the sealing disc formed by the inner and outer portions of the flow-blocking layer is an integral structure, and the outer portion extends outward from the inner portion to the outer side of the aneurysm.

[0008] Preferably, the end of the outer portion of the flow-blocking layer on the metal ring side is not closed, and the end of the flow-blocking layer after heat treatment has an inward folded structure. The metal ring is disposed between the inner portion of the flow-blocking layer and the sealing plate, and is bound to the outside of the support layer and the flow-blocking layer.

[0009] Preferably, the end of the outer portion of the flow-blocking layer on the metal ring side is continuous and closed, and the end of the flow-blocking layer after heat treatment has an inward folded structure. The metal ring is disposed between the inner portion of the flow-blocking layer and the sealing disk, and is bound to the outside of the support layer and the flow-blocking layer.

[0010] Preferably, the end of the outer portion of the flow-blocking layer on the metal ring side is not closed, and the heat-treated metal ring is disposed below the inner portion of the flow-blocking layer and the sealing plate and is bound to the outside of the support layer and the flow-blocking layer.

[0011] Preferably, the sealing discs of the inner and outer portions of the flow-blocking layer are two independent parts. The end of the outer portion of the flow-blocking layer on the metal ring side is not closed. The heat-treated metal ring is set below the inner portion of the flow-blocking layer and the sealing disc and is bound to the outside of the support layer and the flow-blocking layer.

[0012] Preferably, the sealing discs of the inner and outer portions of the flow-blocking layer are two independent parts. The end of the outer portion of the flow-blocking layer on the metal ring side is not closed. The heat-treated metal ring is disposed between the inner portion of the flow-blocking layer and the sealing disc, and is bound to the outside of the support layer and the flow-blocking layer.

[0013] Preferably, the height of the support layer is H1, and the height of the intratumoral portion of the flow-blocking layer is H2, where H1 ≥ 2H2.

[0014] Preferably, the flow-blocking layer is a mesh structure made by interweaving at least one weaving unit through warp knitting or weft knitting processes.

[0015] Preferably, the metal coverage S1 of the support layer is in the range of 10% to 40%, the metal coverage S2 of the flow-blocking layer is in the range of 10% to 50%, S1 < S2, and the grid size of the flow-blocking layer is in the range of 20 micrometers to 200 micrometers.

[0016] As can be seen from the above technical solution, compared with the prior art, the flow-disrupting device provided by this utility model, by adding a blocking disc outside the aneurysm, blocks most of the blood flow outside the blocking disc, and by changing the blood flow state inside the aneurysm, reduces the problem of blood flow impacting the aneurysm wall and forming thrombi, reduces the probability of aneurysm recurrence, and improves the success rate of one treatment, thus achieving the purpose of treating aneurysms; the interlocking structure between the knitted coils of the flow-disrupting layer has good shape stability and is less likely to be displaced by blood flow impact. When treating bifurcation aneurysms, this flow-disrupting device can be used alone without the need to place a stent or implant other devices in the parent artery, avoiding various complications and adverse effects caused by device placement in the parent artery; the flow-disrupting device does not invade the parent artery, further shortening the operation and treatment time, and the impact on branch vessels is almost negligible, providing patients with a safer and more effective treatment option. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the turbulence device of this utility model;

[0019] Figure 2 This is a schematic diagram of the flow-blocking layer structure of this utility model, where a is a weft-knitted flow-blocking layer and b is a warp-knitted flow-blocking layer;

[0020] Figure 3 This is an enlarged view of the flow-blocking layer structure of this utility model, where a is a weft-knitted structure and b is a warp-knitted structure;

[0021] Figure 4 For the present utility model Figure 3 A schematic diagram of the end fixing of a medium-weft knitted structure, where a is direct fixing, b is fixing by spring connection, and c is fixing by externally sleeved metal rings, springs, and other components;

[0022] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0023] Figure 6This is a structural schematic diagram of Embodiment 4 of the present invention;

[0024] Figure 7 This is a structural schematic diagram of Embodiment 5 of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of Embodiment 6 of this utility model;

[0026] Figure 9 This is a schematic diagram of the cross-section of the sealing layer of this utility model, where a is the circular outer contour and b is the four-petal-shaped outer contour;

[0027] Figure 10 This is a structural diagram of the metal ring of this utility model, where a is a side view, b is a perspective view, and c is a schematic diagram of its connection with the release rope.

[0028] Figure 11 These are schematic diagrams illustrating the structure of different embodiments of the flow-blocking layer of this utility model.

[0029] Figure 12 This is a schematic diagram of the conveying system of this utility model;

[0030] Figure 13 This is a schematic diagram of the combined structure of the turbulence device and the conveying system of this utility model;

[0031] Figure 14 This is a schematic diagram of the structure of the release rope of this utility model;

[0032] Figure 15 This is a schematic diagram of the conveying pipe of this utility model.

[0033] Explanation of reference numerals in the attached diagram: Support layer-1, flow-blocking layer-2, sealing disc-3, metal ring-4, conveying pipe-5, handle-6, release rod-7, release rope-8, conveying core wire-9, conveying system control key-10, release rod control key-11, groove-401, engagement groove-402, release end-801, non-release end-802, repeating coil unit-803. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of an exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] Please see the appendix Figure 1-15 This invention discloses a turbulence-inducing device and its conveying system.

[0036] Example 1:

[0037] like Figure 1 As shown, the flow-disrupting device provided by this utility model includes a support layer 1 and a flow-blocking layer 2. The support layer 1 serves as a skeleton made of metal cutting, providing mechanical properties for the flow-disrupting device. The flow-blocking layer 2 includes an intra-aneurysm portion and an extra-aneurysm portion, and is a mesh structure made of braided units through a knitting process. The flow-blocking layer 2 of the intra-aneurysm portion extends outward to the outside of the aneurysm and folds to form the sealing disc 3 of the extra-aneurysm portion. The inner side of the flow-blocking layer 2 is attached to the outer side of the support layer 1 to achieve the effect of blocking blood flow.

[0038] The height of the support layer 1 of the turbulence device is H1, the height of the flow-blocking layer 2 inside the turbulence device is H2, and H1≥2H2; the diameter of the flow-blocking layer 2 inside the turbulence device is D1, and the diameter of the flow-blocking layer 2 outside the turbulence device, i.e., the sealing plate 3, is D2, and D1≤D2.

[0039] like Figure 9 As shown, the outer contour shape of the turbulence device blocking disc includes, but is not limited to, a circle, a petal shape (preferably with 3 or more petals), etc.

[0040] A metal ring 4 is provided at the near end of the turbulence device. The metal ring 4 is sleeved on the outside of the near end support layer 1 and flow-blocking layer 2 of the turbulence device, fixing the support layer 1 and flow-blocking layer 2 together.

[0041] The support layer 1 of the turbulence device can be connected to the metal sleeve by means of welding, cladding, dispensing, bonding, mechanical clamping, etc., to form a connection point on the top of the support layer 1.

[0042] The sealing disc 3 of the turbulence device can be connected to the metal ring 4 by welding, cladding, dispensing, bonding, mechanical clamping, etc., to bind the support layer 1 and the flow-blocking layer 3 of the turbulence device together, forming a connection point at the bottom of the turbulence device.

[0043] like Figure 2-4 As shown, the flow-blocking layer 2 of the turbulence device is a mesh structure made by interweaving at least one woven unit through warp knitting or weft knitting processes.

[0044] The loose ends of the flow-blocking layer 2 of the turbulence device can be directly connected to the ends of the braided unit by welding, cladding, gluing, or bonding. Alternatively, the ends of the braided unit can be connected by springs wrapped around the ends of the braided unit and placed on the ends of the other ends, or by placing springs or metal rings 4 on the outside of the loose ends, combined with welding, cladding, gluing, or bonding processes.

[0045] The metal sleeve at the top connection point and the metal ring 4 at the bottom connection point of the turbulence device can be made of materials such as platinum-tungsten, platinum-iridium, or platinum-nickel containing non-transparent components.

[0046] like Figure 10 As shown, the metal ring 4 is also provided with a locking groove 402 on the outer wall near the near end of the metal ring 4, which connects the end face of the near end of the metal ring 4 and the groove 401.

[0047] The support layer 1 of the turbulence device is a material with shape memory properties such as nickel-titanium or cobalt-chromium, or a DFT material containing non-transparent components, or a material with shape memory properties such as nickel-titanium or cobalt-chromium and non-transparent materials such as platinum-tungsten or platinum-iridium, prepared alone or in combination, or it can be a biodegradable metal or polymer material.

[0048] The braided unit of the flow-blocking layer 2 can be a material with shape memory properties such as nickel-titanium or cobalt-chromium, or a DFT material containing non-transparent components, or a material with shape memory properties such as nickel-titanium or cobalt-chromium and non-transparent materials such as platinum-tungsten or platinum-iridium, either alone or in combination. It can also be a biodegradable metal or polymer material.

[0049] The metal coverage S1 of the support layer is in the range of 10% to 40%; the metal coverage S2 of the flow-blocking layer is in the range of 10% to 50%, S1 < S2, and the grid size of the flow-blocking layer is in the range of 20 micrometers to 200 micrometers.

[0050] In this embodiment, the support layer 1 is made of nickel-titanium material, and the flow-blocking layer 2 is a mesh structure made of nickel-titanium wire through warp knitting. At the top connection point, a metal sleeve containing non-transparent components and the end of the nickel-titanium material at the top of the support layer 2 are connected together by soldering. At the bottom connection point, a metal ring 4 containing non-transparent components, the end of the nickel-titanium material at the bottom of the support layer 1, and the flow-blocking layer 2 are connected together by soldering.

[0051] Example 2:

[0052] like Figure 5 As shown, unlike Example 1, in this example, the support layer 1 is made of a wave bar assembly formed by nickel-titanium ropes, and the flow-blocking layer 2 is a mesh structure made of biodegradable PLGA monofilaments through weft knitting. At the top connection point, a metal sleeve containing radiopaque components and the end of the nickel-titanium rope at the top of the support layer 1 are connected together by plasma welding or laser welding. At the bottom connection point, a metal ring 4 containing radiopaque components, the end of the nickel-titanium rope at the bottom of the support layer 1, and the PLGA of the flow-blocking layer 2 are connected together by adhesive dispensing.

[0053] Example 3:

[0054] Unlike Example 2, in this example, the support layer 1 is made of a wave-shaped assembly formed by twisting and turning PLGA rope, and the surface is coated with a developing coating; the flow-blocking layer 2 is a mesh structure made of nickel-titanium-platinum core DFT by warp knitting process; at the top connection point, the biodegradable metal sleeve and the end of the PLGA rope at the top of the support layer 1 are connected together by adhesive; at the bottom connection point, the stainless steel metal ring 4, the end of the PLGA rope at the bottom of the support layer 1, and the nickel-titanium-platinum core DFT of the flow-blocking layer 2 are connected together by adhesive.

[0055] Example 4:

[0056] like Figure 6 As shown, unlike Example 1, in this example, the support layer 1 is made of a biodegradable shape memory alloy material, and the flow-blocking layer 2 is a mesh structure made of nickel-titanium wires through a weaving process; the loose nickel-titanium wires at the far end of the flow-blocking layer 1 are made into an end-closed structure by welding, cladding, dispensing, bonding, mechanical clamping, etc.; at the top connection point, the biodegradable metal sleeve and the top of the support layer 1 are welded together; at the bottom connection point, the metal ring 4 containing radiopaque components is welded together with the bottom of the support layer 1 and the nickel-titanium wires of the flow-blocking layer 2.

[0057] Example 5:

[0058] like Figure 7 As shown, unlike Example 1, in this example, the support layer 1 is made of a biodegradable shape memory alloy material, and the flow-blocking layer 2 is a mesh structure made of nickel-titanium wire through a weft knitting process. The height H1 of the support layer 1 is equal to the height H2 of the flow-blocking layer 2 inside the flow-blocking device. At the top connection point, the biodegradable metal sleeve is welded together with the top of the support layer 1 and the flow-blocking layer 2. At the bottom connection point, the metal ring 4 containing radiopaque components is welded together with the bottom of the support layer 1 and the nickel-titanium wire of the flow-blocking layer 2.

[0059] Example 6:

[0060] like Figure 8 As shown, unlike Example 1, in this example, the support layer 1 is made of a biodegradable shape memory alloy material, and the flow-blocking layer 2 is a mesh structure made of nickel-titanium wire through a warp knitting process. The height H1 of the support layer 1 is equal to the height H2 of the flow-blocking layer 2 inside the flow-blocking device. At the top connection point, the biodegradable metal sleeve is welded together with the top of the support layer 1 and the flow-blocking layer 2. At the bottom connection point, the metal ring 4 containing radiopaque components is welded together with the bottom of the support layer 1 and the nickel-titanium wire of the flow-blocking layer 2.

[0061] Example 7:

[0062] like Figure 11As shown in (ab), in this embodiment, the inner portion and outer portion (blocking disk 3) of the flow-blocking layer 2 are an integral structure, and the end of the flow-blocking layer 2 on the proximal metal ring 4 side is not closed. After heat treatment, the end of the flow-blocking layer 2 has an inward folded structure. The proximal metal ring 4 is disposed between the inner portion of the flow-blocking device and the blocking disk 3, and is bound to the outside of the support layer 1 and the flow-blocking layer 2. The end of the flow-blocking layer 2 and the end of the support layer 1 may not overlap, such as... Figure 11 (a) The end of the flow-blocking layer 2 can overlap with the end of the support layer 1, such as Figure 11 (b)

[0063] Example 8:

[0064] like Figure 11 As shown in (cd), unlike Example 7, in this example, the end of the flow-blocking layer 2 on the proximal metal ring 4 side is continuous and closed. After heat treatment, the end of the flow-blocking layer 2 has an inward folded structure. The proximal metal ring 4 is disposed between the inner part of the turbulence device and the sealing disk 3, and is bound to the outside of the support layer 1 and the flow-blocking layer 2. The end of the flow-blocking layer 2 and the end of the support layer 1 may not overlap, as shown in (cd). Figure 11 (c) The end of the flow-blocking layer 2 can overlap with the end of the support layer 1, such as... Figure 11 (d)

[0065] Example 9:

[0066] like Figure 11 As shown in (e), unlike in embodiment 7, the end of the flow-blocking layer 2 on the proximal metal ring 4 side is not closed in this embodiment. After heat treatment, the proximal metal ring 4 is set in the part inside the flow-blocking device and below the sealing plate 3, and is bound to the outside of the support layer 1 and the flow-blocking layer 2.

[0067] Example 10:

[0068] like Figure 11 As shown in (fg), unlike Example 7, in this example, the inner part and the outer part (blocking disk 3) of the flow-blocking layer 2 are two independent parts, and the end of the outer part (blocking disk 3) of the flow-blocking layer 2 on the proximal metal ring 4 side is not closed. After heat treatment, the proximal metal ring 4 is set below the inner part of the flow-blocking device and the blocking disk 3, and is bound to the outside of the support layer 1 and the flow-blocking layer 2. The end of the inner part of the flow-blocking layer 2 on the proximal metal ring 4 side can be unclosed, such as... Figure 11 (f); The ends of the 4th side choke layer 2 within the proximal metal ring can also be closed, such as... Figure 11 (g)

[0069] Example 11:

[0070] like Figure 11As shown in (hi), unlike Embodiment 7, in this embodiment, the end of the outer portion of the choke layer (sealing disk 3) on the proximal metal ring 4 side is not closed. After heat treatment, the proximal metal ring 4 is disposed between the inner portion of the choke layer and the sealing disk 3, and is bound to the outside of the support layer 1 and the choke layer 2. The end of the inner portion of the choke layer on the proximal metal ring side may be unclosed, such as... Figure 11 As shown in h and i.

[0071] It should be noted that, in addition to the above-mentioned methods, the arrangement of the near-end metal ring 4 and the distribution of the support layer 1 and the flow-blocking layer 2 on the side of the metal ring 4 can also be in other ways, such as the support layer 1 and the flow-blocking layer 2 being interspersed in the places where the metal ring 4 is bound.

[0072] By using the different structural schemes of the flow-blocking layer 2 in the above embodiments 7-11, the stability between the sealing disk 3, the sealing disk 3 and the internal part of the flow-blocking layer 2 can be enhanced, and the manufacturing cost of the flow-blocking layer 2 can be reduced.

[0073] This utility model also discloses a conveying system for a turbulence device, the conveying system comprising a conveying pipe 5, a handle 6, a release rod 7, a release rope 8, and a conveying core wire 9.

[0074] like Figure 8 , 14 As shown, the release rope 8 of the conveying system is a unidirectional unravelable knitted coil structure made by a knitting process from a braiding unit. The two ends are a release end 801 and a non-release end 802. Between the two ends is a repeating coil unit 803. A certain coil in the middle of the release rope 8 is tightly fitted into the groove 402 on the outside of the near end metal ring 4 of the turbulence device.

[0075] Under the action of external force, the coil of the release end 801 is released from the adjacent repeating coil unit 803, the adjacent repeating coil unit 803 becomes the new release end 801 and is released from the adjacent repeating coil unit 803 under the action of external force, until the release rope 801 is separated from the metal ring 4 near the end of the turbulence device, wherein the number of repeating coil units 803 is q, and q is a positive integer not less than 1.

[0076] like Figure 12 As shown, the conveying core wire 9 is sleeved inside the conveying pipe 5 and is connected and fixed to the non-detachable end 802 of the release rope 8 to form a connection point c.

[0077] The release rod 7 is sleeved inside the conveying pipe 5 and is connected and fixed to the release end 801 of the release rope 8 to form a connection point d;

[0078] The conveying pipe 5 is sleeved outside the conveying core wire 9 and the release rod 7, and is used for preloading and conveying of the turbulence device;

[0079] The handle 6 is located at the near end of the conveying pipe 5. The handle 6 is equipped with a conveying system control key 10 and a release rod control key 11. The conveying system control key 10 can control the conveying core wire 9, the release rod 7, the release rope 8 and the turbulence device in the conveying pipe to move simultaneously to the near end or the far end. The release rod control key 11 can control the release rod 7 to move to the near end or the far end.

[0080] like Figure 13 As shown, the turbulence device and its conveying system disclosed in this utility model are pre-loaded. The turbulence device is pre-loaded in the conveying pipe 5 of the conveying system. During the conveying process, the turbulence device is fixed together with the conveying pipe 5 and the conveying core wire 9 of the conveying system by the release rope 8. Before the sealing disc 3 is completely released, the relative position of the metal ring 4 at the near end of the turbulence device and the conveying core wire 9 of the conveying system remains unchanged.

[0081] like Figure 15 As shown, the conveying pipe 5 has a grooved structure. The grooves can be continuous or intermittent. The groove spacing along the axial direction of the conveying pipe 5 is gradually changing. The near end of the conveying pipe 5 has a variable diameter structure from near to far.

[0082] The working principle of the conveying system is as follows:

[0083] The handle 6 is fixed to secure the delivery tube 5. At the same time, the delivery system control key 10 is pushed forward to the distal end. The turbulence device gradually moves to the distal end within the delivery tube 5 until it reaches the lesion site and is released. Here, release refers to the state where the support layer 1 and the flow-blocking layer 2 of the turbulence device are engaged within the tumor, and the sealing disc 3 of the turbulence device is engaged outside the tumor. Pull back the release lever control key 11. The delivery core wire 9 and the turbulence device remain stationary. At the same time, the release lever 7 moves to the proximal end. Since the release lever 7 is fixedly connected to the release end 801 of the release rope 8, under the action of the release lever 7, the knitted coils of the release rope 8 are gradually unraveled along the release end 801 to the non-releasable end 802. The coils of the release rope 8 that are tightly engaged with the groove 401 of the metal ring 4 at the proximal end of the turbulence device are unraveled and gradually detached from the groove 401 and the metal ring 4 along the engagement groove 402, thus realizing the separation of the turbulence device from the delivery system.

[0084] It should be noted that the release rope 8 is made of metal or polymer materials, the conveying core wire 9 is preferably made of nickel-titanium or stainless steel, the conveying tube 5 is preferably made of nickel-titanium or stainless steel, and the handle 6 is made of metal or a combination of metal and polymer materials.

[0085] It should be noted that the braiding unit of the flow-blocking layer 2 and the release rope 8 is composed of one or more braiding units arranged in parallel, simply bonded, twisted, or coiled. The cross-sectional shape of the braiding unit of the flow-blocking layer 2 and the release rope 8 includes, but is not limited to, circular, triangular, and hollow ring-shaped irregular structures. The braiding unit of the flow-blocking layer 2 and the release rope 8 has one or more wire diameters. The wire diameter of the braiding unit of the flow-blocking layer 2 and the release rope 8 is in the range of 0.0005 inches to 0.005 inches. The wire diameter of the braiding unit of the flow-blocking layer 2 and the release rope 8 is smaller than the width of the wave rod of the support layer 1.

[0086] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flow disturbing device, characterized in that The system includes a support layer (1) and a flow-blocking layer (2). The flow-blocking layer (2) includes an intratumoral portion and an extratumoral portion. The inner side of the intratumoral portion of the flow-blocking layer (2) is attached to the outer side of the support layer (1). The extratumoral portion of the flow-blocking layer (2) is folded to form a sealing disc (3). The proximal end of the support layer (1) and the proximal end of the flow-blocking layer (2) are fixedly connected by a metal ring (4). The metal ring (4) is located at the center of the proximal ends of the support layer (1) and the flow-blocking layer (2). The diameter of the intratumoral portion of the flow-blocking layer (2) is D1, and the diameter of the sealing disc (3) formed by the extratumoral portion of the flow-blocking layer (2) is D2, where D1 ≤ D2.

2. The flow disturbing device of claim 1, wherein The occlusion disc (3) formed by the inner part and the outer part of the flow-blocking layer (2) is an integral structure, and the outer part extends outward from the inner part to the outer side of the aneurysm.

3. The flow disturbing device of claim 2, wherein The end of the outer part of the flow-blocking layer (2) on the side of the metal ring (4) is not closed. After heat treatment, the end of the flow-blocking layer (2) has an inward fold structure. The metal ring (4) is set between the inner part of the flow-blocking layer (2) and the sealing plate (3), and is bound to the outside of the support layer (1) and the flow-blocking layer (2).

4. The turbulence-disrupting device according to claim 2, characterized in that, The end of the outer part of the flow-blocking layer (2) on the side of the metal ring (4) is continuous and closed. The end of the flow-blocking layer (2) after heat treatment has an inward fold structure. The metal ring (4) is set between the inner part of the flow-blocking layer (2) and the sealing plate (3), and is bound to the outside of the support layer (1) and the flow-blocking layer (2).

5. The flow disturbing device of claim 2, wherein The end of the outer part of the flow-blocking layer (2) on the side of the metal ring (4) is not closed. The heat-treated metal ring (4) is set below the inner part of the flow-blocking layer (2) and the sealing plate (3), and is bound to the outside of the support layer (1) and the flow-blocking layer (2).

6. The flow disturbing device of claim 1, wherein The inner part of the flow-blocking layer (2) and the sealing plate (3) outside the flow-blocking layer (2) are two independent parts. The end of the outer part of the flow-blocking layer (2) on the side of the metal ring (4) is not closed. The heat-treated metal ring (4) is set below the inner part of the flow-blocking layer (2) and the sealing plate (3), and is bound to the outside of the support layer (1) and the flow-blocking layer (2).

7. The flow disturbing device of claim 1, wherein The inner part of the flow-blocking layer (2) and the sealing plate (3) outside the flow-blocking layer (2) are two independent parts. The end of the outer part of the flow-blocking layer (2) on the side of the metal ring (4) is not closed. The heat-treated metal ring (4) is set inside the flow-blocking layer (2) between the sealing plate (3) and bound to the outside of the support layer (1) and the flow-blocking layer (2).

8. The flow disturbing device of claim 1, wherein The height of the support layer (1) is H1, and the height of the intratumoral portion of the flow-blocking layer (2) is H2, where H1 ≥ 2H2.

9. The flow disturbing device of claim 1, wherein, The flow-blocking layer (2) is a mesh structure made by interweaving at least one weaving unit through warp knitting or weft knitting processes.

10. The flow disturbing device of claim 1, wherein The metal coverage S1 of the support layer (1) is in the range of 10 to 40%, the metal coverage S2 of the flow-blocking layer (2) is in the range of 10 to 50%, S1 < S2, and the grid size of the flow-blocking layer (2) is in the range of 20 micrometers to 200 micrometers.

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