Blood vessel supporting device, conveying device and blood vessel supporting system

Abstract

The invention provides a blood vessel supporting device, a conveying device and a blood vessel supporting system, and relates to the technical field of medical instruments.The blood vessel supporting device comprises a supporting ring and anchoring thorns, the supporting ring has the elastic deformation capacity, and a through hole is formed in the supporting ring; the anchoring thorn comprises a main thorn used for puncturing the through hole outwards from the interior of the supporting ring, a limiting part is arranged on the outer wall of the main thorn, and the limiting part has a compression reset function; the supporting ring in the blood vessel supporting device has the elastic deformation capacity, and cannot excessively extrude blood vessel tissue to cause undercut, so that the problem of damage to blood vessels due to long-time use is avoided; moreover, the anchoring thorns which are clamped with the supporting ring and pierce into the blood vessel are arranged, the supporting ring can be prevented from shifting under the anchoring effect of the anchoring thorns, and the situation that the anastomotic stoma bleeding due to shifting of the supporting ring is avoided.

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, and aortic aneurysm are serious, rapidly progressive, and high-mortality vascular diseases. They arise from localized lesions in the aorta that worsen under the impact of continuous blood flow, leading to catastrophic consequences.

[0003] With the continuous advancement of medical technology, the advantages of stent grafts for treating aortic aneurysms and arterial dissections are becoming increasingly prominent. During use, a stent graft is first compressed to ensure smooth entry into the blood vessel. It is then advanced to the designated location of the lesion and finally released. The stent graft's membrane isolates blood flow from the lesion, eliminating the impact of blood flow on the aneurysm wall, dissection rupture, and false lumen at the lesion site, thereby establishing a path for normal blood circulation and achieving positive results in the treatment of most patients.

[0004] As clinicians conduct in-depth research, they find that during stent graft treatment surgery, it is necessary to anastomose the stent vessel and the multi-branch artificial blood vessel, which takes a lot of anastomosis time and causes tissue necrosis due to prolonged circulatory arrest in patients. In order to solve this problem, a support ring anastomosis technology has been developed, which can achieve rapid anastomosis without suturing to shorten the time. However, current clinical findings have also found some problems with the anastomosis of multi-branch stent graft vessels. First, the support ring used in traditional stent graft vessels does not have elastic compressibility, which leads to excessive squeezing of native vascular tissue in the human body, resulting in root cutting, and long-term use can easily cause vascular damage; in addition, due to the influence of hemodynamics, the vascular support ring in the traditional stent graft will inevitably shift, and the displacement will cause the vascular anastomosis to fail, resulting in blood loss in the patient, and in severe cases, even death of the patient. Therefore, when the vascular anastomosis fails, a secondary suturing operation is required after the vascular anastomosis, but this operation will 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 object 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 elastic deformation ability and will not excessively squeeze the vascular tissue to cause root cutting, thereby avoiding the problem of damage to the blood vessel caused by long-term use of the support ring; moreover, the present invention provides an anchoring thorn that is engaged with the support ring and penetrates into the blood vessel. The anchoring effect of the anchoring thorn can prevent the support ring from shifting, thereby avoiding anastomotic bleeding caused by the displacement of the support ring.

[0007] To achieve the above object, the present invention provides the following solutions: A vascular support device includes a support ring and an anchoring thorn, wherein the support ring has elastic deformation capability and is provided with a through hole; the anchoring thorn includes a main thorn for piercing the through hole from the interior of the support ring outward, and a limiting portion is provided on the outer wall of the main thorn, wherein the limiting portion has a compression reset function. In a natural state, the outer diameter of the limiting portion is larger than the diameter of the through hole. When the limiting portion is compressed and deformed by a radial force, the outer diameter of the limiting portion is smaller than the diameter of the through hole.

[0008] As one embodiment, the anchoring thorn further includes a base, which is fixedly connected to the non-tip end of the anchoring thorn, and the diameter of the circumscribed circle of the end face of the base is larger 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.

[0009] As one embodiment, the limiting portion includes a card, an end of the card close to the tip of the main thorn is fixedly connected to the main thorn, and an end of the card away from the tip of the main thorn is radially tilted outward for abutting against the outer wall of the support ring; in a natural state, the distance between the tilted end of the card and the axis of the main thorn is greater than the radius of the through hole, and when the tilted end is close to the main thorn, the distance between the tilted end and the axis of the main thorn is less than the radius of the through hole.

[0010] As one embodiment, the main thorn also has a card accommodating groove, which is located radially inward of the card and is used to accommodate the card. When the card is located in the card accommodating groove, the distance between the raised end and the axis of the main thorn is less than the radius of the through hole.

[0011] As an embodiment, a clamping portion for being clamped is provided on the main thorn, and the clamping portion is located between the limiting portion and the base.

[0012] As an embodiment, the circumferential distribution trajectory of the plurality of through holes on the support ring is circular, broken line or spiral.

[0013] As an embodiment, the support ring is a mesh structure, and the through holes are located at the intersections of mesh wires in the mesh structure.

[0014] The present invention also discloses a delivery device for delivering the above-mentioned vascular support device, including a limit fork, which is used to be arranged inside the support ring. The limit fork includes a fork handle and multiple fork bodies circumferentially arranged at the end of the fork handle. The fork handle is a hollow structure for passing a balloon. A clamping structure for clamping the anchoring thorn is provided on the end of the fork body away from the fork handle. After the anchoring thorn is clamped in the clamping structure, it is arranged radially along the support ring; the clamping structure has an opening on the end away from the fork handle for separation from the anchoring thorn.

[0015] As one embodiment, the clamping structure includes a clamping slot arranged axially along the limiting fork, and the clamping slot has an arc segment arranged relatively thereon, the diameter of the arc segment is adapted to the diameter of the clamping portion on the main thorn for cooperating with the clamping structure, and the clamping slot has the opening at the end away from the fork handle.

[0016] As one embodiment, it also includes a fixed head and an operating handle, and a plurality of clamping components are arranged on the side wall of one end of the fixed head at circumferential intervals, and the other end of the fixed head is connected to the operating handle through a connecting tube; 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 provided at the end of the support ring, and when the support ring is in a retracted 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.

[0017] As one embodiment, it also includes a balloon, which is used to be arranged on the inner side of the limiting fork and the support ring. When the balloon is inflated, the support ring is expanded and the fork body is bent and deformed; it also includes a compression catheter, which is sleeved on the outer side of the support ring, the limiting fork and the balloon, so that the support ring is 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.

[0018] As an embodiment, the support ring and the fork handle are both connected to the operating handle through a connecting tube.

[0019] The present invention further discloses a vascular support system, comprising the vascular support device as described above and the delivery device as described above.

[0020] Compared with the prior art, the present invention has the following technical effects: 1. The support ring in the vascular support device of the present invention has elastic deformation capabilities, preventing excessive compression of vascular tissue and the resulting undercutting, thereby avoiding the problem of vascular damage caused by prolonged use of the support ring. Furthermore, the present invention provides anchoring spikes that engage with the support ring and penetrate the blood vessel. The anchoring effect of the anchoring spikes prevents displacement of the support ring, thus avoiding anastomotic bleeding caused by support ring displacement. This prevents postoperative recurrence and complications, resulting in a better treatment effect. 2. In the present invention, a limiting portion is provided on the anchoring thorn, which enables the anchoring thorn to be stuck on the support ring, making the connection structure between the support ring and the anchoring thorn more stable.

[0021] Other technical solutions of the present invention also have the following technical effects: 1. The present invention improves the convenience of pre-positioning and releasing the anchoring thorn by providing a clamping structure on the limiting fork to engage with the clamping portion on the main thorn; 2. In the present invention, after the anchoring thorn is fixed on the clamping structure and is located inside the compression catheter, the tip of the main thorn is located in the through hole of the support ring and does not leak out of the outer wall of the support ring. On the one hand, it can complete the pre-positioning of the main thorn and the through hole, making it convenient for the main thorn to be directly inserted out of the through hole. On the other hand, it also avoids scratching between the tip of the main thorn and the compression catheter, which leads to wear of the tip of the main thorn and the insertion of the tip of the main thorn into the compression catheter, making it difficult to withdraw the compression catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic structural diagram of a vascular support device in one embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of point A in the middle; Figure 3 This is a schematic structural diagram of a support ring in a compressed state in one embodiment of the present invention; Figure 4 This is a schematic structural diagram of an anchoring thorn in one embodiment of the present invention; Figure 5 This is a schematic structural diagram of a limit fork in an initial state according to an embodiment of the present invention; Figure 6 for Figure 5 Left view of; Figure 7This is a schematic structural diagram of a fork body of a limiting fork bending under the action of balloon inflation in one embodiment of the present invention; Figure 8 for Figure 7 Left view of; Figure 9 for Figure 7 A partial enlarged view of point B in the middle; Figure 10 This is a schematic structural diagram of a fixed head in a conveying device according to one embodiment of the present invention; Figure 11 for Figure 10 The main view; Figure 12 for Figure 11 sectional view of Figure 13 This is a schematic diagram of the initial coordination structure of the vascular support device and the delivery device in one embodiment of the present invention; Figure 14 for Figure 13 A partial enlarged view of point C in the middle; Figure 15 This is a schematic structural diagram of the release process of a vascular support device in one embodiment of the present invention; Figure 16 for Figure 15 A partial enlarged view of point D in the middle; Figure 17 This is a schematic diagram of the configuration structure of a vascular support device in a human body according to one embodiment of the present invention; Figure 18 for Figure 17 A partial enlarged view of point E in the middle.

[0024] Description of reference numerals: 1. Support ring; 101. Through hole; 102. Fixing ring; 2. Anchoring thorn; 201. Main thorn; 202. Base; 203. Card; 204. Card receiving slot; 3. Limit fork; 301. Fork handle; 302. Fork body; 303. Slot; 304. Arc segment; 305. Opening; 4. Balloon; 5. Compression catheter; 6. Fixed head; 601. C-shaped protrusion; 602. Columnar protrusion; 7. Covered stent; 8. Autologous blood vessels; 9. Buckle. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] 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 elastic deformation ability and will not excessively squeeze the vascular tissue to cause root cutting, thereby avoiding the problem of damage to the blood vessel caused by long-term use of the support ring; moreover, the present invention provides an anchoring thorn that is engaged with the support ring and penetrates into the blood vessel. The anchoring effect of the anchoring thorn can prevent the support ring from shifting, thereby avoiding anastomotic bleeding caused by the displacement of the support ring.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1: like Figures 1 to 4 As shown, this embodiment provides a vascular support device comprising a support ring 1 and anchoring spikes 2. The support ring 1 is used to support a stent graft 7 (artificial blood vessel). The support ring 1 has elastic deformation capability. Elastic deformation capability here refers to the ability of the support ring 1 to compress or expand under external force without self-recovery, or the ability of the support ring 1 to recover under its own restoring force after the external force is removed. Specifically, the support ring 1 can be cut and shaped from a memory alloy (such as nickel-titanium alloy) or an alloy with a high elastic modulus (such as cobalt-chromium alloy). The support ring 1 is provided with a through hole 101 extending radially through its sidewall. The anchoring spikes 2 include main spikes 201, which extend from the inside outward through the through hole 101. The outer wall of the main spike 201 is provided with a limiter, which has a compression-reset function. In its natural state, the outer diameter of the limiter is larger than the diameter of the through-hole 101. When the limiter is compressed and deformed by radial force, the outer diameter of the limiter can be reduced to a level smaller than the diameter of the through-hole 101. The anchoring spike 2 can be made of medical nickel-titanium alloy through laser cutting, shaping, and polishing processes.

[0029] During use, the anchoring spike 2 can be pre-positioned inside the support ring 1. The support ring 1 is compressed and inserted into the lesion site. The support ring 1 expands under its own reset ability and / or external force to support the artificial blood vessel. The anchoring spike 2 is then aligned with the through hole 101 and pushed outward, gradually penetrating the artificial blood vessel, autologous blood vessel 8 (the body's own blood vessel), or buckle 9. When the stopper passes through the through hole 101, the stopper's diameter decreases under the squeeze of the through hole 101. After passing through the through hole 101, the stopper returns to its original position under the action of its own reset force, preventing the main spike 201 from dislodging inwardly from the through hole 101. Simultaneously, the base 202 prevents the main spike 201 from dislodging outward. Under the action of the stopper, the main spike 201 is retained on the support ring 1, and the tip penetrates the artificial blood vessel, autologous blood vessel 8, or buckle 9, thereby securing the support ring 1 and preventing displacement of the support ring 1 under the influence of hemodynamics, thereby ensuring the stability of the vascular support device.

[0030] It should be noted that before implantation of the vascular support device, the artificial blood vessel is already positioned inside the autologous blood vessel 8 at the lesion site, and the autologous blood vessel 8 also has a buckle 9 on the outside. The length of the main thorn 201 in this embodiment can be designed based on actual conditions. After anchoring, the main thorn 201 can be inserted only into the artificial blood vessel, or penetrate the artificial blood vessel and then penetrate the autologous blood vessel 8, or penetrate the artificial blood vessel, the autologous blood vessel 8 and then penetrate the buckle 9, or penetrate all three.

[0031] Therefore, the support ring 1 in this embodiment has elastic deformation capability and will not cause excessive squeezing of the vascular tissue to cause root cutting, thereby avoiding the problem of damage to the blood vessels caused by long-term use of the support ring. Moreover, this embodiment provides an anchoring thorn 2 that is engaged with the support ring 1 and penetrates into the blood vessel. The anchoring effect of the anchoring thorn 2 can prevent the support ring 1 from shifting, thereby avoiding the occurrence of anastomotic bleeding due to the displacement of the support ring 1. Postoperative recurrence will not occur, and complications will not be caused, resulting in a better treatment effect. At the same time, the limiting portion can prevent the anchoring thorn 2 from slipping out of the through hole 101 inward, thereby improving the connection strength between the anchoring thorn 2 and the support ring 1 and ensuring the stability of the overall structure of the vascular support device.

[0032] As one embodiment, the anchoring spike 2 in this example also includes a base 202. The circumscribed diameter of the end surface of the base 202 is larger than the diameter of the through hole 101, preventing the main spike 201 from protruding out of the through hole 101. The distance between the stopper and the base 202 is adapted to the wall thickness of the support ring 1. The base 202, in conjunction with the stopper, further enhances the connection strength between the anchoring spike 2 and the support ring 1. The base 202 is typically a columnar structure, with the end surface of the base 202 being the surface to which the main spike 201 is attached, or a surface parallel to the surface to which the main spike 201 is attached.

[0033] As one embodiment, the retaining member in this embodiment comprises a clip 203. The end of the clip 203, located near the tip of the main spine 201, is fixedly connected to the main spine 201. The end of the clip 203, located away from the tip of the main spine 201, is tilted radially outward, giving the clip 203 an overall tilted shape. The tilted end of the clip 203 is configured to abut against the outer wall of the support ring 1. The distance between the tilted end of the clip 203 and the axis of the main spine 201 is greater than the radius of the through-hole 101. As the clip 203 passes through the through-hole 101, the clip 203, under the influence of the through-hole 101, abuts against the outer wall of the main spine 201, reducing the height of the tilted end (i.e., the distance between the tilted end and the axis of the main spine 201) and allowing the tilted end to pass through the through-hole 101. After passing through the through-hole 101, the clip 203 returns to its original position due to its own restoring force, and the tilted end returns to its original position, abutting against the outer wall of the support ring 1 or with a slight gap therebetween. When the main thorn 201 has a tendency to fall out inwards under the action of external force, the raised end of the card 203 abuts against the outer wall of the support ring 1 to receive the force, preventing the main thorn 201 from falling out inwards from the through hole 101, thereby ensuring the stability of the position of the main thorn 201.

[0034] In this embodiment, at least two cards 203 are evenly arranged along the circumference of the main thorn 201, and the planar unfolded surface of the card 203 can be a nearly trapezoidal shape, that is, the fixed end (the end where the card 203 is fixed to the main thorn 201) has a small circumferential size and the raised end has a large circumferential size.

[0035] 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 angle (the angle between the wall surface and the axis of the main thorn 201) of different sections gradually increases from the fixed end to the raised end of the card 203.

[0036] To facilitate the proximity of card 203 to the outer wall of main spine 201, in this embodiment, main spine 201 further includes a card receiving groove 204. Card receiving groove 204 is located radially inward of card 203 and is used to accommodate card 203. When card 203 is positioned within card receiving groove 204 under the action of an external force, the distance between the raised end of card 203 and the axis of main spine 201 is less than the radius of through hole 101. As a specific example, the depth of card receiving groove 204 is not less than the thickness of card 203, and the area of ​​card receiving groove 204 is not less than the area of ​​card 203, ensuring that card 203 can be accommodated. In this embodiment, cards 203 are arranged at intervals along the circumference of main spine 201. However, multiple receiving grooves can be arranged at intervals along the circumference of main spine 201, or a single annular groove can be arranged along the circumference of main spine 201.

[0037] In this embodiment, a clamping portion for being clamped is provided on the main thorn 201 to facilitate connection with 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.

[0038] In this embodiment, the support ring 1 has a mesh structure composed of interlaced mesh wires. The meshes in the mesh structure can be rectangular, diamond-shaped, or other tilable polygonal shapes. The distribution trajectory of the through holes 101 can be spiral, broken line, or circular. When the trajectory of the through holes 101 is circular, multiple through holes 101 are located on the same radial cross section of the support ring 1. To ensure the strength of the mesh wires at the locations where the through holes 101 are located, in this embodiment, the through holes 101 are located at the intersections of the mesh wires in the mesh structure.

[0039] Example 2: like Figures 5 to 18 As shown, this embodiment provides a delivery device for delivering the vascular stent device of Example 1. The delivery device includes a retaining fork 3, which is positioned within a support ring 1. The retaining fork 3 comprises a fork handle 301 and a plurality of prongs 302 circumferentially arranged at the end of the fork handle 301. The number of prongs 302 is equal to the number of through-holes 101 in the support ring 1. The fork handle 301 is hollow and is used to receive a balloon 4. The end of the prongs 302, distal from the fork handle 301, is provided with a snap-fit ​​structure for engaging with anchoring spikes 2. The snap-fit ​​structure is positioned in a one-to-one correspondence with the position of the through-holes 101 in the support ring 1. After being snapped into the snap-fit ​​structure, the anchoring spikes 2 are positioned radially along the support ring 1, directly opposite the through-holes 101. The end of the snap-fit ​​structure, distal from the fork handle 301, has an opening 305 for separating the anchoring spikes 2, facilitating removal of the retaining fork 3. In the initial state, the prongs 302 are straight rod-shaped and extend along the wall of the fork handle 301.

[0040] In this embodiment, the limiting fork 3 is formed by cutting and shaping nickel-titanium alloy (or cobalt-chromium alloy).

[0041] In this embodiment, the engaging structure includes a slot 303 axially disposed along the retaining fork 3. The slot 303 includes an arcuate segment 304 disposed opposite thereto. The diameter of the arcuate segment 304 matches the diameter of the engaging portion on the main thorn 201, which is adapted to engage with the engaging structure. The slot 303 has an opening 305 on the end away from the fork handle 301. During use, the engaging portion on the anchoring thorn 2 engages with the arcuate segment 304 to maintain the stability of the anchoring thorn 2. The engaging portion in this embodiment may have a cylindrical surface to facilitate engagement with the arcuate segment 304 of the slot 303. Of course, the engaging portion and engaging structure may also employ other feasible structures.

[0042] The conveying device in this embodiment also includes a fixed head 6 and an operating handle. A plurality of snap-fit ​​components are arranged at intervals along the circumferential direction on the side wall of one end of the fixed head 6, and the other end of the fixed head 6 is connected to the operating handle through a connecting tube; the snap-fit ​​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 provided at the end of the support ring 1, and 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 an arc or a shape formed by connecting multiple straight lines; the columnar protrusion 602 can be cylindrical or prism-shaped. In this embodiment, the shape of the C-shaped protrusion 601 is an arc, and the shape of the columnar protrusion 602 is cylindrical. When the support ring 1 is in the contracted state, the fixing 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 fixing ring 102 .

[0043] The delivery device in this embodiment further includes a balloon 4, which is arranged on the inner side of the limiting fork 3 and the support ring 1. When the balloon 4 expands, the support ring 1 expands and the fork body 302 bends and deforms.

[0044] The delivery device in this embodiment also includes a compression catheter 5, which is injection-molded from ABS, PC, PA, or other materials. The compression catheter 5 is positioned over the support ring 1, the retaining fork 3, and the balloon 4, placing the support ring 1 in a contracted state. When the support ring 1 is positioned within the compression catheter 5, the tip of the main spike 201 is positioned within the through-hole 101.

[0045] To facilitate transport 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 operating handle via a connecting tube. Connecting the support ring 1, the fork handle 301, and the balloon 4 to the operating handle is within the capabilities of those skilled in the art, and therefore, the connection method is not described in detail in this embodiment.

[0046] Delivery process of vascular support device: First, secure the anchoring spikes 2 to the limiting fork 3. Then, place the limiting fork 3 and anchoring spikes 2 together into a designated position within the uncompressed support ring 1. The support ring 1 is then compressed, causing its diameter to decrease and contract to the designated position. At this point, each anchoring spike 2 is aligned with the through-hole 101 on the support ring 1, and the tip of each anchoring spike 2 is located within the through-hole 101, without protruding from the outer wall of the support ring 1. The balloon 4, with its protective sheath and fixing tube, is then installed into the designated position within the limiting fork 3. The protective sheath is then removed. Finally, the compression catheter 5 is placed onto the outer surface of the support ring 1 at a designated position, ensuring that the support ring 1 is in a compressed state. While the support ring 1 is in a compressed state, the fixing head 6 is connected to the fixing ring 102 at the end of the support ring 1. Multiple fixing rings 102 are then placed one by one onto the columnar protrusions 602. This completes the compression of the vascular stent device and the preliminary assembly of the vascular stent device and the delivery device. Next, the vascular stent device is delivered to the lesion site.

[0047] The compressed support ring 1 is placed within the compression catheter 5 and inserted into the lesion. The operator then retracts the compression catheter 5 using an operating handle, freeing the support ring 1 from the confines of the compression catheter 5. The operator then manipulates the connecting tube using the operating handle to move the fixing head 6, allowing for fine adjustments to the position of the support ring 1. A pressure pump is then used to inflate the balloon 4. During the inflation process, the balloon 4 squeezes the support ring 1, anchoring spikes 2, and fork 302, increasing the diameter of the support ring 1 and causing the anchoring spikes 2 and the snap-fit ​​structure on the fork 302 to move radially outward. As the diameter of the support ring 1 increases, the fixing ring 102 disengages from the snap-fit ​​assembly on the fixing head 6. As the anchoring spikes 2 move radially outward, they gradually penetrate the artificial blood vessel, autologous blood vessel 8, or buckle 9. While the snap-fit ​​structure on the fork 302 moves, the connection between the fork 302 and the fork handle 301 does not move radially, allowing the fork 302 to gradually bend under the action of the balloon 4. According to the pressure displayed by the pressure pump, the limiting fork 3 is withdrawn to allow the anchoring thorn 2 to disengage from the opening 305 of the clamping structure, completing the separation from the clamping structure (the withdrawal of the limiting fork 3 should be determined according to the pressure displayed by the pressure pump to determine the timing of withdrawing the limiting 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, making it difficult to withdraw the limiting fork 3); the balloon 4 is continued to be inflated 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, cooperating with the base 202 to make the main thorn 201 completely stuck on the support ring 1; finally, the pressure pump is relieved. 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.

[0048] Example 3: This embodiment provides a vascular support system, including the vascular support device in Example 1 and the delivery device in Example 2.

[0049] Adaptive changes based on actual needs are all within the scope of protection of the present invention.

[0050] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A vascular support device, characterized in that: include: A support ring, wherein the support ring has elastic deformation capability and is provided with a through hole; And an anchoring thorn, the anchoring thorn includes a main thorn used to pierce the through hole from the inside of the support ring to the outside, a limiting portion is arranged on the outer wall of the main thorn, the limiting portion has a compression and reset function, in a natural state, the outer diameter of the limiting portion is larger than the diameter of the through hole, and when the limiting portion is compressed and deformed by a radial force, the outer diameter of the limiting portion is smaller than the diameter of the through hole.

2. The vascular support device according to claim 1, characterized in that: The anchoring thorn also includes a base, which is fixedly connected to the non-tip end of the anchoring thorn, and the diameter of the circumscribed circle of the end face of the base is larger 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.

3. The vascular support device according to claim 1, characterized in that: The limiting portion includes a card, an end of the card close to the tip of the main thorn is fixedly connected to the main thorn, and an end of the card away from the tip of the main thorn is tilted radially outward for abutting against the outer wall of the support ring; in a natural state, the distance between the tilted end of the card and the axis of the main thorn is greater than the radius of the through hole, and when the tilted end is close to the main thorn, the distance between the tilted end and the axis of the main thorn is less than the radius of the through hole.

4. The vascular support device according to claim 3, characterized in that: The main thorn also has a card accommodating groove, which is located radially inward of the card and is used to accommodate the card. When the card is located in the card accommodating groove, the distance between the raised end and the main thorn axis is less than the radius of the through hole.

5. The vascular support device according to claim 2, characterized in that: The main thorn is provided with a clamping portion for being clamped, and the clamping portion is located between the limiting portion and the base.

6. The vascular support device according to claim 1, characterized in that: The circumferential distribution trajectory of the plurality of through holes on the support ring is circular, zigzag or spiral.

7. The vascular support device according to claim 6, characterized in that: The support ring is in a mesh structure, and the through holes are located at the intersections of mesh wires in the mesh structure.

8. A conveying device, characterized in that: A vascular support device for delivering any one of claims 1 to 7, comprising a limit fork, wherein the limit fork is used to be arranged inside the support ring, the limit fork comprises a fork handle and a plurality of fork bodies circumferentially arranged at the end of the fork handle, the fork handle is a hollow structure for passing a balloon, a clamping structure for clamping the anchoring thorn is arranged at one end of the fork body away from the fork handle, and the anchoring thorn is clamped in the clamping structure and then arranged radially along the support ring; the clamping structure has an opening at one end away from the fork handle for separation from the anchoring thorn.

9. The conveying device according to claim 8, characterized in that The clamping structure includes a clamping slot arranged along the axial direction of the limiting fork, and the clamping slot has arc segments arranged opposite to each other. The diameter of the arc segments is adapted to the diameter of the clamping part on the main thorn for cooperating with the clamping structure, and the clamping slot has the opening at one end away from the fork handle.

10. The conveying device according to claim 8, characterized in that It also includes a fixed head and an operating handle, wherein a plurality of clamping assemblies are arranged on the side wall of one end of the fixed head at intervals along the circumferential direction, and the other end of the fixed head is connected to the operating handle through a connecting tube; the clamping assembly 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, and when the support ring is in a retracted 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.

11. The conveying device according to claim 8, characterized in that It also includes a balloon, which is used to be arranged on the inner side of the limiting fork and the supporting ring. When the balloon is inflated, the supporting ring is expanded and the fork body is bent and deformed; It also includes a compression catheter, which is sleeved on the outside of the support ring, the limiting fork and the balloon to put 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.

12. The conveying device according to claim 10, characterized in that The support ring and the fork handle are both connected to the operating handle via a connecting pipe.

13. A vascular support system, characterized in that: It comprises the vascular supporting device according to any one of claims 1 to 7 and the delivery device according to any one of claims 8 to 12.

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