A vascular support device, a delivery device, and a vascular support system

Abstract

The present invention provides a vascular support device, a delivery device, and a vascular support system, which relate to the technical field of medical devices. The vascular support device includes a support ring and anchoring spines. The support ring has the ability of elastic deformation and is provided with through holes. The anchoring spines include main spines for piercing the through holes from the inside of the support ring to the outside. A limiting part is arranged on the outer wall of the main spines, and the limiting part has a compression and reset function. The support ring in the vascular support device of the present invention has the ability of elastic deformation and will not cause excessive extrusion to vascular tissues resulting in root cutting, thereby avoiding the problem of damage to blood vessels caused by long-term use. Moreover, by providing anchoring spines that are clamped with the support ring and penetrate into blood vessels, the present invention can prevent the support ring from shifting by using the anchoring effect of the anchoring spines, and avoid the occurrence of anastomotic bleeding due to the shift of the support ring.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular, to a vascular support device, a delivery device, and a vascular support system. Background Art

[0002] Aortic dissection, aortic ulcer, aortic aneurysm, etc. are a type of vascular diseases with dangerous conditions, rapid progression, and high mortality. The cause of the disease is that local lesions occur in the aortic vascular wall, which continuously deteriorate under the continuous impact of blood flow, resulting in catastrophic consequences.

[0003] With the continuous development of medical technology, the advantages of covered stents in the treatment of aortic aneurysms and arterial dissections have become increasingly prominent. When using a covered stent, the covered stent needs to be compressed first to ensure that it can smoothly enter the blood vessel, then it is sent to the designated lesion location, and finally the covered stent is released. The membrane of the covered stent isolates the blood flow and the lesion site, eliminates the impact of blood flow on the aneurysm wall or the dissection rupture opening and false lumen of the lesion site, and establishes a normal blood circulation channel, which has a positive effect on the treatment of most patients.

[0004] With the in-depth research of clinicians, it is found that during the covered stent treatment operation, it is necessary to anastomose the stent blood vessel and the multi-branch artificial blood vessel, which takes a lot of anastomosis time, resulting in tissue necrosis due to the patient's long-term circulatory arrest. To solve this problem, a support ring anastomosis technique has been developed, that is, rapid anastomosis can be achieved without suturing to shorten the time. However, currently in clinical practice, some problems have also been found in the anastomosis of multi-branch covered stent blood vessels. First, the support rings used in traditional covered stent blood vessels do not have elastic compressibility, which leads to excessive extrusion of the native vascular tissue in the human body, resulting in root cutting, and it is easy to cause vascular damage after long-term use; in addition, due to the influence of hemodynamics, the vascular support rings in traditional covered stents inevitably shift, and the shift will cause the vascular anastomosis to fail, resulting in blood loss in patients, and even death in severe cases. Therefore, when the vascular anastomosis fails, after vascular anastomosis, a secondary suture operation is required, but this operation will also waste a lot of time.

[0005] Therefore, it is necessary to develop a vascular support device to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a vascular support device, a delivery device, and a vascular support system to solve the problems existing in the above-mentioned prior art. The support ring in the vascular support device has the ability of elastic deformation, and will not cause root cutting due to excessive extrusion of the vascular tissue, thus avoiding the problem of vascular damage caused by long-term use of the support ring; moreover, the present invention is provided with an anchoring thorn that is clamped with the support ring and penetrates into the blood vessel, and the anchoring effect of the anchoring thorn can prevent the support ring from shifting, avoiding the situation of anastomotic bleeding caused by the shift of the support ring.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] A vascular support device includes a support ring and anchoring spines. The support ring has the ability of elastic deformation, and through holes are provided on the support ring. The anchoring spines include main spines for piercing the through holes from the inside of the support ring to the outside. A limiting portion is provided on the outer wall of the main spines. The limiting portion has a compression and reset function. In the natural state, the outer diameter of the limiting portion is greater than the diameter of the through hole. When the limiting portion is compressed by a radial force and deformed, the outer diameter of the limiting portion is less than the diameter of the through hole.

[0009] As an embodiment, the anchoring spines further include a base, the base is fixedly connected to the non-tip end of the anchoring spines, and the diameter of the circumscribed circle of the end face of the base is greater than the diameter of the through hole; the distance between the limiting portion and the base is adapted to the wall thickness of the support ring.

[0010] As an embodiment, the limiting portion includes a card. One end of the card close to the tip of the main spine is fixedly connected to the main spine. The other end of the card far from the tip of the main spine warps outwards in the radial direction for abutting against the outer wall of the support ring. In the natural state, the distance from the warped end of the card to the axis of the main spine is greater than the radius of the through hole. When the warped end abuts against the main spine, the distance from the warped end to the axis of the main spine is less than the radius of the through hole.

[0011] As an embodiment, a card accommodating groove is further provided on the main spine. The card accommodating groove is located radially inside the card for accommodating the card. When the card is located in the card accommodating groove, the distance from the warped end to the axis of the main spine is less than the radius of the through hole.

[0012] As an embodiment, a clamping portion for being clamped is provided on the main spine. The clamping portion is located between the limiting portion and the base.

[0013] As an embodiment, the circumferential distribution locus of the multiple through holes on the support ring is circular, zigzag or spiral.

[0014] As an embodiment, the support ring is in a mesh structure, and the through holes are located at the intersection positions of the mesh wires in the mesh structure.

[0015] The present invention also discloses a conveying device for conveying the above-mentioned vascular support device, which includes a limiting fork. The limiting fork is used to be arranged inside the support ring. The limiting fork includes a fork handle and a plurality of fork bodies circumferentially arranged at the end of the fork handle. The fork handle is of a hollow structure for passing a balloon. One end of the fork body far from the fork handle is provided with a clamping structure for clamping the anchoring thorn. After the anchoring thorn is clamped in the clamping structure, it is arranged along the radial direction of the support ring; one end of the clamping structure far from the fork handle has an opening for separating from the anchoring thorn.

[0016] As an embodiment, the clamping structure includes a clamping groove arranged along the axial direction of the limiting fork. The clamping groove has opposite arc-shaped segments. The diameter of the arc-shaped segment is adapted to the diameter of the clamping part on the main thorn for cooperating with the clamping structure. One end of the clamping groove far from the fork handle has the opening.

[0017] As an embodiment, it further includes a fixing head and an operating handle. A plurality of clamping components are circumferentially and spacedly arranged on the side wall of one end of the fixing head. The other end of the fixing head is connected to the operating handle through a connecting pipe; the clamping component includes a C-shaped protrusion and a columnar protrusion arranged at the center position of the C-shaped protrusion; a fixing ring is arranged at the end of the support ring. When the support ring is in a contracted state, the fixing ring is sleeved on the columnar protrusion. The distance between the C-shaped protrusion and the columnar protrusion is adapted to the radial width of the fixing ring.

[0018] As an embodiment, it further includes a balloon. The balloon is used to be arranged inside the limiting fork and the support ring. When the balloon expands, it expands the support ring and causes the fork body to bend and deform; it further includes a compression catheter. The compression catheter is sleeved outside the support ring, the limiting fork and the balloon to make the support ring in a contracted state. When the support ring is located in the compression catheter, the tip of the main thorn is located in the through hole.

[0019] As an embodiment, both the support ring and the fork handle are connected to the operating handle through connecting pipes.

[0020] The present invention also discloses a vascular support system, which includes the above-mentioned vascular support device and the above-mentioned conveying device.

[0021] The present invention has the following technical effects compared with the prior art:

[0022] 1. The support ring in the vascular support device of the present invention has the ability of elastic deformation and will not cause excessive extrusion to the vascular tissue, resulting in root cutting, thus avoiding the problem of damage to the blood vessel caused by the long-term use of the support ring. Moreover, by setting the anchoring spines that are clamped with the support ring and penetrate into the blood vessel, the present invention can prevent the support ring from shifting by using the anchoring effect of the anchoring spines, avoid the occurrence of anastomotic bleeding due to the shift of the support ring, will not relapse after the operation, and will not cause complications, and has a better treatment effect.

[0023] 2. The anchoring spines in the present invention are provided with limiting parts, which can make the anchoring spines clamped on the support ring and make the connection structure of the support ring and the anchoring spines more stable.

[0024] Other technical solutions of the present invention also have the following technical effects:

[0025] 1. By setting a clamping structure on the limiting fork to cooperate with the clamping part on the main spine for clamping in the present invention, the convenience of pre-positioning the anchoring spines and releasing the anchoring spines is improved.

[0026] 2. After the anchoring spines are fixed on the clamping structure and located inside the compression catheter, the tip of the main spine is located in the through hole of the support ring and does not protrude from the outer wall surface of the support ring. On the one hand, it can complete the pre-positioning of the main spine and the through hole, facilitating the main spine to directly pierce out from the through hole. On the other hand, it also avoids the problem that the tip of the main spine scratches with the compression catheter, resulting in the tip of the main spine being worn and the tip of the main spine piercing into the compression catheter, making it difficult to withdraw the compression catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic structural diagram of the vascular support device in an embodiment of the present invention;

[0029] Figure 2 It is Figure 1 a partial enlarged view of part A in

[0030] Figure 3 It is a schematic structural diagram of the support ring in a compressed state in an embodiment of the present invention;

[0031] Figure 4 It is a schematic structural diagram of the anchoring spines in an embodiment of the present invention;

[0032] Figure 5Schematic diagram of the limiting fork in the initial state in an embodiment of the present invention;

[0033] Figure 6 is Figure 5 the left view of;

[0034] Figure 7 Schematic diagram of the fork body of the limiting fork bending under the action of balloon inflation in an embodiment of the present invention;

[0035] Figure 8 is Figure 7 the left view of;

[0036] Figure 9 is Figure 7 the partial enlarged view at B in;

[0037] Figure 10 Schematic diagram of the fixed head in the delivery device in an embodiment of the present invention;

[0038] Figure 11 is Figure 10 the front view of;

[0039] Figure 12 is Figure 11 the sectional view of;

[0040] Figure 13 Schematic diagram of the initial matching structure of the vascular support device and the delivery device in an embodiment of the present invention;

[0041] Figure 14 is Figure 13 the partial enlarged view at C in;

[0042] Figure 15 Schematic diagram of the release process of the vascular support device in an embodiment of the present invention;

[0043] Figure 16 is Figure 15 the partial enlarged view at D in;

[0044] Figure 17 Schematic diagram of the setting structure of the vascular support device in the human body in an embodiment of the present invention;

[0045] Figure 18 is Figure 17 the partial enlarged view at E in.

[0046] Explanation of reference numerals:

[0047] 1. Support ring; 101. Through hole; 102. Fixed ring;

[0048] 2. Anchoring thorn; 201. Main thorn; 202. Base; 203. Card; 204. Card receiving groove;

[0049] 3. Limit fork; 301. Fork handle; 302. Fork body; 303. Card slot; 304. Arc segment; 305. Opening;

[0050] 4. Balloon;

[0051] 5. Compression catheter;

[0052] 6. Fixed head; 601. C-shaped protrusion; 602. Columnar protrusion;

[0053] 7. Covered stent;

[0054] 8. Autologous blood vessel;

[0055] 9. Buckle strap. Specific implementation manner

[0056] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0057] The purpose of the present invention is to provide a vascular support device to solve the problems existing in the prior art. The support ring in the vascular support device has the ability of elastic deformation and will not cause root cutting due to excessive extrusion of the vascular tissue, thereby avoiding the problem of damage to the blood vessel caused by long-term use of the support ring. Moreover, the present invention prevents the displacement of the support ring by setting the anchor spines that are clamped with the support ring and penetrate into the blood vessel, and avoids the occurrence of anastomotic bleeding due to the displacement of the support ring.

[0058] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0059] Embodiment 1:

[0060] As Figures 1 to 4As shown in the figure, this embodiment provides a vascular support device, which includes a support ring 1 and anchoring spines 2. The support ring 1 is used to support a covered stent 7 (artificial blood vessel). The support ring 1 has the ability of elastic deformation. Here, the ability of elastic deformation means that the support ring 1 can produce compressive deformation or expansion deformation under the action of an external force, without self-recovery ability, or the support ring 1 can recover under the action of its own restoring force after the external force is removed when it produces compressive deformation or expansion deformation under the action of an external force. Specifically, the support ring 1 can be cut and shaped from a shape memory alloy (such as nitinol) or an alloy with a high elastic modulus (such as cobalt-chromium alloy). A through hole 101 is provided on the side wall of the support ring 1 and penetrates radially through it. The anchoring spine 2 includes a main spine 201, and the main spine 201 is used to penetrate the through hole 101 from the inside to the outside. A limiting portion is provided on the outer wall of the main spine 201, and the limiting portion has a compression and reset function; in the natural state, the outer diameter of the limiting portion is greater than the diameter of the through hole 101; when the limiting portion is compressed by a radial force and deformed, the outer diameter of the limiting portion can be reduced to a level smaller than the diameter of the through hole 101. The anchoring spine 2 can be made of a medical nitinol spine material through processes such as laser cutting, shaping, and polishing.

[0061] During use, the anchoring spine 2 can be preset inside the support ring 1. The support ring 1 is sent to the lesion site in a compressed state. The support ring 1 expands under its own reset ability and / or the action of an external force to support the artificial blood vessel; the anchoring spine 2 is pushed outwards and aligned with the through hole 101, and gradually penetrates into the artificial blood vessel, the autologous blood vessel 8 (the blood vessel of the human body itself), or the buckle 9. When the limiting portion passes through the position of the through hole 101, the diameter of the limiting portion becomes smaller under the extrusion of the through hole 101. After the limiting portion passes through the through hole 101, the limiting portion resets under the action of its own restoring force to prevent the main spine 201 from protruding inwards from the through hole 101; at the same time, the base 202 plays a role in preventing the main spine 201 from protruding outwards. Under the action of the limiting portion, the main spine 201 is stuck on the support ring 1, and the tip penetrates into the artificial blood vessel, the autologous blood vessel 8, or the buckle 9, achieving the purpose of fixing the support ring 1 and avoiding the problem of displacement of the support ring 1 under the action of hemodynamics, ensuring the stability of the vascular support device.

[0062] It should be noted that before the vascular support device is implanted, the artificial blood vessel has been placed inside the autologous blood vessel 8 at the lesion site, and there is also a buckle 9 outside the autologous blood vessel 8. The length of the main spine 201 in this embodiment can be designed according to the actual situation. After anchoring, the main spine 201 can penetrate only into the artificial blood vessel, or penetrate through the artificial blood vessel and then into the autologous blood vessel 8, or penetrate through the artificial blood vessel, the autologous blood vessel 8, and then into the buckle 9, or penetrate through the artificial blood vessel, the autologous blood vessel 8, and the buckle 9 all three.

[0063] Thus, the support ring 1 in this embodiment has the ability of elastic deformation and will not cause excessive extrusion to the vascular tissue, resulting in root cutting, thereby avoiding the problem of damage to the blood vessel caused by the long-term use of the support ring. Moreover, in this embodiment, by providing the anchoring spines 2 that are clamped with the support ring 1 and penetrate into the blood vessel, the anchoring effect of the anchoring spines 2 can prevent the support ring 1 from shifting, avoiding the situation of anastomotic bleeding caused by the shift of the support ring 1. There will be no recurrence after the operation and no complications will be caused, and the treatment effect is better. At the same time, the limiting part can prevent the anchoring spines 2 from protruding inward out of the through hole 101, improving the connection strength between the anchoring spines 2 and the support ring 1 and ensuring the stability of the overall structure of the blood vessel support device.

[0064] As an embodiment, the anchoring spines 2 in this embodiment further include a base 202. The diameter of the circumscribed circle of the end face of the base 202 is larger than the diameter of the through hole 101, which is used to prevent the main spines 201 from protruding out of the through hole 101. The distance between the limiting part and the base 202 is adapted to the wall thickness of the support ring 1. The base 202 and the limiting part can further improve the connection strength between the anchoring spines 2 and the support ring 1. The base 202 is usually a columnar structure. The end face of the base 202 refers to the face where the main spines 201 are fixed or other faces parallel to the face where the main spines 201 are fixed.

[0065] As an embodiment, the limiting part in this embodiment includes a card 203. One end of the card 203 close to the tip of the main spines 201 is fixedly connected to the main spines 201. The end of the card 203 far from the tip of the main spines 201 warps outward in the radial direction, making the whole card 203 inclined. The warped end of the card 203 is used to abut against the outer wall of the support ring 1; the distance from the warped end of the card 203 to the axis of the main spines 201 is greater than the radius of the through hole 101. When the card 203 passes through the through hole 101, it will be close to the outer wall of the main spines 201 under the action of the through hole 101, reducing the warping height of its warped end (i.e., the distance from the warped end to the axis of the main spines 201), so that its warped end can pass through the through hole 101. After passing through the through hole 101, the card 203 resets under its own restoring force, and the warped end returns to its original state, abutting against the outer wall of the support ring 1 or having a small gap with the outer wall of the support ring 1. When the main spines 201 tend to protrude inward under the action of an external force, the warped end of the card 203 abuts against the outer wall of the support ring 1 and receives the force, preventing the main spines 201 from protruding inward out of the through hole 101 and ensuring the stability of the position of the main spines 201.

[0066] In this embodiment, at least two cards 203 are evenly arranged along the circumferential direction of the main spines 201, and the plane expansion surface of the card 203 can be a nearly trapezoidal shape, that is, the circumferential dimension of the fixed end (the end where the card 203 is fixed to the main spines 201) is small, and the circumferential dimension of the warped end is large.

[0067] In this embodiment, the wall surface of the card 203 can be a plane, a curved surface or a bent surface. When the wall surface of the card 203 is a bent surface, the bending angles (the angles between the wall surface and the axis of the main thorn 201) of different sections gradually increase from the fixed end to the raised end of the card 203.

[0068] In order to facilitate the card 203 to be close to the outer wall of the main thorn 201, the main thorn 201 in this embodiment also has a card receiving groove 204, which is located on the radial inner side of the card 203 and is used to receive the card 203. When the card 203 is located in the card receiving groove 204 under the action of external force, the distance between the tilted end of the card 203 and the axis of the main thorn 201 is less than the radius of the through hole 101. As a specific example, the depth of the card receiving groove 204 is not less than the thickness of the card 203, and the area of ​​the card receiving groove 204 is not less than the area of ​​the card 203, so as to ensure that the card 203 can be received. In this embodiment, the card 203 is arranged at intervals along the circumference of the main thorn 201, but the receiving groove can be arranged at intervals along the circumference of the main thorn 201, or it can be arranged into an annular groove body along the circumference of the main thorn 201.

[0069] In this embodiment, a clamping portion for clamping is provided on the main thorn 201 to facilitate the connection of other mechanisms for clamping and fixing the main thorn 201. Specifically, the clamping portion is located between the raised end of the card 203 and the base 202.

[0070] In this embodiment, the support ring 1 is a mesh structure, which is composed of staggered mesh wires. The grid in the mesh structure can be a rectangle, a rhombus or other polygonal shapes that can be tiled. The distribution trajectory of the through hole 101 can be a spiral line, a broken line or a circle. When the trajectory of the through hole 101 is a circle, multiple through holes 101 are located on the same radial section of the support ring 1. In order to ensure the strength of the mesh wire at the location where the through hole 101 is set, the through hole 101 in this embodiment is located at the intersection of the mesh wire in the mesh structure.

[0071] Embodiment 2:

[0072] like Figures 5 to 18As shown in the figure, this embodiment provides a conveying device for conveying the vascular support device in Embodiment 1, which includes a limiting fork 3. The limiting fork 3 is used to be arranged inside the support ring 1. The limiting fork 3 includes a fork handle 301 and a plurality of fork bodies 302 arranged circumferentially at the end of the fork handle 301. The number of fork bodies 302 is equal to the number of through holes 101 on the support ring 1. The fork handle 301 is a hollow structure for passing through the balloon 4. One end of the fork body 302 far from the fork handle 301 is provided with a clamping structure for clamping the anchoring thorn 2, and the arrangement of the clamping structure corresponds one by one to the arrangement position of the through hole 101 on the support ring 1. After the anchoring thorn 2 is clamped in the clamping structure, it is arranged radially along the support ring 1 and can be aligned with the through hole 101. One end of the clamping structure far from the fork handle 301 has an opening 305 for separating from the anchoring thorn 2, which is convenient for pulling out the limiting fork 3. In the initial state, the fork body 302 is in a straight rod shape and extends along the wall surface of the fork handle 301.

[0073] In this embodiment, the limiting fork 3 is formed by cutting and shaping nickel-titanium alloy (or cobalt-chromium alloy).

[0074] In this embodiment, the clamping structure includes a clamping groove 303 arranged axially along the limiting fork 3. The clamping groove 303 has opposite arc-shaped sections 304. The diameter of the arc-shaped section 304 is adapted to the diameter of the clamping part on the main thorn 201 for cooperating with the clamping structure. One end of the clamping groove 303 far from the fork handle 301 has an opening 305. During use, the clamping part on the anchoring thorn 2 is clamped at the arc-shaped section 304, which is convenient for maintaining the stability of the anchoring thorn 2. The clamping part in this embodiment can have a cylindrical surface, which is convenient for being clamped in the arc-shaped section 304 of the clamping groove 303. Of course, the clamping part and the clamping structure can also adopt other realizable structures.

[0075] The conveying device in this embodiment further includes a fixed head 6 and an operating handle. A plurality of clamping components are arranged at intervals circumferentially on the side wall of one end of the fixed head 6. The other end of the fixed head 6 is connected to the operating handle through a connecting pipe. The clamping component includes a C-shaped protrusion and a columnar protrusion 602 arranged at the center of the C-shaped protrusion. A fixed ring 102 is arranged at the end of the support ring 1. The outer edge contour of the fixed ring 102 is adapted to the shape of the C-shaped contour, and the inner edge contour of the fixed ring 102 is adapted to the shape of the columnar protrusion 602. The C-shaped protrusion 601 can be arc-shaped or formed by connecting multiple straight lines. The columnar protrusion 602 can be cylindrical or prismatic. In this embodiment, the shape of the C-shaped protrusion 601 is arc-shaped, and the shape of the columnar protrusion 602 is cylindrical. When the support ring 1 is in a contracted state, the fixed ring 102 is sleeved on the columnar protrusion 602, and the distance between the C-shaped protrusion and the columnar protrusion 602 is adapted to the radial width of the fixed ring 102.

[0076] The conveying device in this embodiment further includes a balloon 4, which is used to be arranged inside the limiting fork 3 and the support ring 1. When the balloon 4 expands, it expands the support ring 1 and causes the fork body 302 to bend and deform.

[0077] The conveying device in this embodiment further includes a compression catheter 5, which is injection-molded with materials such as ABS, PC, PA or others. The compression catheter 5 is sleeved outside the support ring 1, the limiting fork 3 and the balloon 4 to keep the support ring 1 in a contracted state. When the support ring 1 is located in the compression catheter 5, the tip of the main thorn 201 is located in the through hole 101.

[0078] To facilitate the conveyance of the support ring 1, the limiting fork 3 and the balloon 4, in this embodiment, the support ring 1, the fork handle 301 and the balloon 4 are all connected to the operation handle through connecting tubes. Connecting the support ring 1, the fork handle 301 and the balloon 4 in this embodiment to the operation handle can be achieved by those skilled in the art according to their own capabilities. Therefore, the connection method herein is not elaborated in this embodiment.

[0079] Conveying process of the vascular support device:

[0080] First, fix the anchoring thorn 2 on the limiting fork 3, and then put the limiting fork 3 and the anchoring thorn 2 together into the designated position inside the uncompressed support ring 1; then compress the support ring 1, the diameter of the support ring 1 becomes smaller and it contracts to the designated position. At this time, each anchoring thorn 2 is aligned with the through hole 101 on the support ring 1 one by one, and the tip of the anchoring thorn 2 is located in the through hole 101 and does not protrude from the outer wall surface of the support ring 1. Then, install the balloon 4 with the protective sleeve and the fixing tube into the designated position inside the limiting fork 3, pull out its protective sleeve, and finally sleeve the compression catheter 5 at the designated position outside the support ring 1 to ensure that the support ring 1 is in a compressed state. When the support ring 1 is in a compressed state, connect the fixing head 6 to the fixing ring 102 at the end of the support ring 1, and a plurality of fixing rings 102 are sleeved on the columnar protrusion 602 one by one. Thus, the compression of the vascular support device and the preliminary assembly of the vascular support device and the conveying device are completed. Next, send the vascular support device to the lesion site.

[0081] The support ring 1 in the compressed state is placed in the compression catheter 5 and sent to the lesion position. The staff withdraws the compression catheter 5 through the operating handle, and the support ring 1 is free from the restriction of the compression catheter 5; the staff can operate the connecting tube through the operating handle to move the fixed head 6, and can make fine adjustments to the position of the support ring 1. Then use the pressure pump to fill the balloon 4. During the filling and expansion process of the balloon 4, the support ring 1, the anchoring thorn 2 and the fork body 302 are squeezed to increase the diameter of the support ring 1, and the anchoring thorn 2 and the position of the clamping structure on the fork body 302 move radially outward. During the process of the diameter of the support ring 1 increasing, the clamping assembly on the fixing ring 102 and the fixing head 6 is separated; the anchoring thorn 2 gradually penetrates into the artificial blood vessel, the autologous blood vessel 8 or the buckle 9 during the radial outward movement; when the position of the clamping structure on the fork body 302 moves, the connection position between the fork body 302 and the fork handle 301 will not move radially, so that the fork body 302 gradually bends under the action of the balloon 4. According to the pressure display of the pressure pump, the limit fork 3 is withdrawn to make the anchoring thorn 2 disengage from the opening 305 of the clamping structure to complete the separation from the clamping structure (the withdrawal of the limit fork 3 should be determined according to the displayed value of the pressure of the pressure pump to determine the timing of withdrawing the limit fork 3, so as to avoid the problem that the balloon 4 squeezes the fork body 302 between the base 202 and the support ring 1, and the limit fork 3 is difficult to withdraw); the balloon 4 is continued to be filled until the pressure pump reaches the preset pressure. At this time, the main thorn 201 in the anchoring thorn 2 is anchored in place, and the card 203 is located outside the support ring 1, and cooperates with the base 202 to make the main thorn 201 completely stuck on the support ring 1; finally, the pressure pump is depressurized. After the pressure relief is completed, the compression catheter 5 and the balloon 4 are completely withdrawn from the human body through the operating handle to complete the delivery and release operation of the vascular support ring 1.

[0082] Embodiment 3:

[0083] This embodiment provides a vascular support system, including the vascular support device in Embodiment 1 and the delivery device in Embodiment 2.

[0084] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0085] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A vascular support device, characterized in that, Comprising: A support ring, the support ring having an elastic deformation ability, and through holes being provided on the support ring; And anchor spines, the anchor spines including main spines for piercing the through holes from the inside of the support ring to the outside, a limiting portion being provided on the outer wall of the main spines, the limiting portion having a compression and reset function, in a natural state, the outer diameter of the limiting portion being greater than the diameter of the through holes, when the limiting portion is compressed by a radial force to generate deformation, the outer diameter of the limiting portion being less than the diameter of the through holes; The anchor spines further include a base, the base being fixedly connected to the non-tip end of the main spines, the outer diameter of the circumscribed circle of the end face of the base being greater than the diameter of the through holes; the distance between the limiting portion and the base being adapted to the wall thickness of the support ring; During use, the anchor spines are preset inside the support ring, the support ring is sent to the diseased position in a compressed state, and the support ring expands under its own reset ability and / or external force to support the artificial blood vessel; The anchor spines are aligned and pushed outwards through the through holes. When the limiting portion passes through the position of the through holes, the diameter of the limiting portion becomes smaller under the extrusion of the through holes. After the limiting portion passes through the through holes, the limiting portion resets under its own reset force.

2. The vascular support device according to claim 1, wherein, The limiting portion includes cards, at least two cards being uniformly arranged along the circumferential direction of the main spines, one end of the cards close to the tip of the main spines being fixedly connected to the main spines, and one end of the cards far from the tip of the main spines being warped outwards in the radial direction for abutting against the outer wall of the support ring; in a natural state, the distance from the warped end of the cards to the axis of the main spines being greater than the radius of the through holes, when the warped end abuts against the main spines, the distance from the warped end to the axis of the main spines being less than the radius of the through holes.

3. The vascular support device according to claim 2, characterized in that, The main spines further have card receiving grooves, the card receiving grooves being located radially inside the cards for receiving the cards. When the cards are located in the card receiving grooves, the distance from the warped end to the axis of the main spines is less than the radius of the through holes.

4. The vascular support device according to claim 1, wherein A clamping portion for being clamped is provided on the main spines, and the clamping portion is located between the limiting portion and the base.

5. The vascular support device according to claim 1, characterized in that, The circumferential distribution trajectories of the plurality of through holes on the support ring are circular, polyline-shaped or spiral-shaped.

6. The vascular support device according to claim 5, characterized in that, The support ring has a mesh structure, and the through holes are located at the intersection positions of the mesh wires in the mesh structure.

7. A conveying device, characterized in that, A device for transporting the blood vessel support device according to any one of claims 1 to 6, including a limiting fork, the limiting fork being used for being arranged inside the support ring, the limiting fork including a fork handle and a plurality of fork bodies arranged along the circumferential direction at the end of the fork handle, the fork handle being a hollow structure for passing a balloon, a clamping structure for clamping the anchor spines being provided at the end of the fork bodies far from the fork handle, and after the anchor spines are clamped in the clamping structure, they are arranged along the radial direction of the support ring; an opening for separating from the anchor spines is provided at the end of the clamping structure far from the fork handle.

8. The conveying device according to claim 7, characterized in that, The clamping structure includes a clamping groove arranged along the axial direction of the limiting fork. The clamping groove has oppositely arranged arc segments, and the diameter of the arc segments is adapted to the diameter of the clamping portion on the main thorn for cooperating with the clamping structure. One end of the clamping groove far from the fork handle has the opening.

9. The conveying device according to claim 7, characterized in that It further includes a fixed head and an operating handle. A plurality of clamping components are circumferentially and spacedly arranged on the side wall at one end of the fixed head. The other end of the fixed head is connected to the operating handle through a connecting pipe. The clamping component includes a C-shaped protrusion and a columnar protrusion arranged at the center of the circle of the C-shaped protrusion. A fixing ring is arranged at the end of the support ring. When the support ring is in a contracted state, the fixing ring is sleeved on the columnar protrusion, and the distance between the C-shaped protrusion and the columnar protrusion is adapted to the radial width of the fixing ring.

10. The conveying device according to claim 7, wherein It further includes a balloon, and the balloon is used to be arranged inside the limiting fork and the support ring. When the balloon expands, the support ring is expanded and the fork body is bent and deformed. It further includes a compression catheter, and the compression catheter is sleeved outside the support ring, the limiting fork and the balloon to keep the support ring in a contracted state. When the support ring is located in the compression catheter, the tip of the main thorn is located in the through hole.

11. The conveying device according to claim 9, characterized in that, Both the support ring and the fork handle are connected to the operating handle through connecting pipes.

12. A vascular support system, characterized in that, It includes the vascular support device according to any one of claims 1 to 6 and the delivery device according to any one of claims 7 to 11.

Images