Vascular intervention stent

Abstract

The utility model discloses a vascular intervention stent which comprises a stent body, the whole stent body is of a hollow cylindrical structure, and the outer wall of the cylindrical structure is of a hollowed-out structure. The system further comprises; the mounting rings are arranged at the upper and lower positions of the hollow cylindrical structure of the bracket main body; the limiting mechanisms are distributed outside the two mounting rings at equal angles, the support body is arranged towards the inner sides of the mounting rings, and the limiting mechanisms are arranged towards the outer sides of the mounting rings. The vascular intervention stent; two mounting rings are arranged at the upper position and the lower position of the support body, limiting mechanisms are distributed on the outer side of the support body at equal angles, and extrusion plates distributed outside first connecting rods in the limiting mechanisms in an arc shape can be symmetrically clamped with the preformed grooves after entering the preformed grooves, so that the extrusion plates can protrude out of the whole support, and the extrusion plates are prevented from being damaged. In the blood vessel of a patient, not only can the blood vessel be supported, but also the blood vessel wall can be extruded.

Description

Technical Field

[0001] The utility model relates to the technical field of vascular stents, and specifically relates to a vascular interventional stent. Background Technique

[0002] A vascular stent refers to a stent placed at the diseased end of a patient on the basis of balloon dilation of the lumen to support the stenosed or occluded segment inside the blood vessel, reduce the elastic recoil and remodeling of the blood vessel, and keep the lumen of the blood vessel unobstructed. Generally, its material is tantalum metal, medical stainless steel, nickel-titanium alloy, etc. All the existing vascular stents in the market are in a cylindrical hollow structure. In order to facilitate displacement when used in the blood vessel, the protrusions provided on the outer walls of the upper tube wall and the lower tube wall in a vascular stent with application number 20172163478.5 disclosed in the existing market can prevent the relative displacement between the blood vessel and the stent. However, the positions of the protrusions on the tube wall are relatively protruding, so when the user uses the stent, it will not only cause discomfort to the patient, but also increase the risk of local rupture of the blood vessel. Content of the Utility Model

[0003] The purpose of the utility model is to provide a vascular interventional stent to solve the problem that when the existing vascular interventional stents in the market are used, the protruding positions on the outer walls of the upper and lower tube walls are too protruding, so that it will not only cause discomfort to the patient, but also increase the risk of local rupture of the blood vessel as mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A vascular interventional stent, including a stent body, which is integrally arranged in a hollow cylindrical structure, and the outer wall of its cylindrical structure is arranged in a hollow shape;

[0005] It also includes;

[0006] Installation rings, which are arranged at the upper and lower positions of the hollow cylindrical structure of the stent body;

[0007] A limiting mechanism, which is evenly distributed at equal angles outside the two installation rings. The stent body is arranged closer to the inner side of the installation ring, and the limiting mechanism is arranged closer to the outer side of the installation ring.

[0008] Preferably, the installation rings and the two top ends on both sides of the stent body are integrally installed, and their materials are the same as those of the stent body.

[0009] Preferably, the limiting mechanism includes a first connecting rod and a second connecting rod. The first connecting rod and the second connecting rod are arranged inside the two installation rings, and the first connecting rod and the second connecting rod are engaged with each other.

[0010] Preferably, an extrusion plate is integrally installed on the outer side of the bottom of the first connecting rod, and the outer side of the extrusion plate is arranged in an arc structure.

[0011] Preferably, a storage groove is inlaid on the inner side of the second connecting rod. The storage groove is used for engaging with the first connecting rod and the extrusion plate. A reserved groove that penetrates the storage groove is also inlaid on the outer wall of the second connecting rod.

[0012] Preferably, the reserved groove is engaged with the extrusion plate. After the extrusion plate is engaged into the storage groove, it will be ejected at the position of the reserved groove to achieve the effect of limiting.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: This vascular interventional stent;

[0014] 1. There are 2 mounting rings arranged at the upper and lower positions of the stent body, and limiting mechanisms are distributed at equal angles on the outer side thereof. The extrusion plates distributed in an arc on the outer part of the first connecting rod inside the limiting mechanism can be symmetrically engaged with the reserved groove after entering the reserved groove, so that it can protrude outside the entire stent, achieving not only vascular support but also extrusion with the blood vessel wall inside the patient's blood vessel. Since it is arranged in an arc structure, when extruding, it can not only ensure the position of the entire stent body is fixed and will not shift, but also the top is smooth, so that the situation of patient discomfort will not occur;

[0015] 2. When the extrusion plate is inside the storage groove and has not reached the position of the reserved groove, it will be extruded and received inside the second connecting rod, so that the outer shape of the entire stent is still arranged in a cylindrical structure, which is convenient for storage and use. When the entire stent body is expanded and supported, since the distance between the 2 mounting rings becomes shorter, the first support rod will move into the second support rod, so that the extrusion plate reaches the inside of the reserved groove and protrudes for limiting, which is convenient to operate and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present utility model;

[0017] Figure 2 It is a partial enlarged structural schematic diagram of the present utility model;

[0018] Figure 3 It is a structural schematic diagram of the limiting mechanism of the present utility model in the middle of the mounting ring;

[0019] Figure 4 It is a structural schematic diagram of the first connecting rod and the second connecting rod of the present utility model separated;

[0020] Figure 5It is a schematic diagram of the partially enlarged structure of the top ends of the first connecting rod and the second connecting rod of the utility model.

[0021] In the figure: 1. bracket body; 2. mounting ring; 3. limiting mechanism; 31. first connecting rod; 32. second connecting rod; 4. extrusion plate; 5. storage groove; 6. reserved groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1-5 The utility model provides a technical solution: a vascular intervention stent, comprising a stent body 1, which is in a hollow cylindrical structure as a whole, and the outer wall of the cylindrical structure is in a hollow structure;

[0024] Also includes;

[0025] A mounting ring 2 is provided at upper and lower positions of the hollow cylindrical structure of the bracket body 1;

[0026] The limiting mechanism 3 is distributed at equal angles outside the two mounting rings 2, the bracket body 1 is arranged toward the inner side of the mounting ring 2, and the limiting mechanism 3 is arranged toward the outer side of the mounting ring 2;

[0027] The present application provides a vascular interventional stent with a limiting mechanism 3. Specifically, when in use, first, the entire stent body 1 only needs to be sleeved on the outside of the balloon. Then, after the stent body 1 is moved to a fixed position by the balloon, the balloon expands, which will cause the entire stent body 1 to expand and complete the support work for the blood vessel. When the entire stent body 1 is expanded, the distance between the two mounting rings 2 will become shorter, thereby causing the limiting mechanism 3 between the two mounting rings 2 to expand outward, thereby completing the work of limiting the position of the stent body 1 under the action of the limiting mechanism 3.

[0028] Among them, according to Figures 1-2 As shown, the mounting ring 2 is integrally mounted between the top ends of both sides of the bracket body 1, and its material is the same as that of the bracket body 1;

[0029] Specifically, the same material can ensure that when the entire bracket body 1 is stretched at the top, the entire mounting ring 2 can be expanded or reduced to a certain extent.

[0030] As a further preference of this embodiment, according to Figures 3-5 As shown, the limiting mechanism 3 includes a first connecting rod 31 and a second connecting rod 32. The first connecting rod 31 and the second connecting rod 32 are distributed inside the two mounting rings 2, and the first connecting rod 31 and the second connecting rod 32 are engaged with each other.

[0031] An extrusion plate 4 is integrally installed on the outer side of the bottom of the first connecting rod 31, and the outer side of the extrusion plate 4 is arranged in an arc structure.

[0032] A storage groove 5 is inlaid on the inner side of the second connecting rod 32. The storage groove 5 is used for engaging with the first connecting rod 31 and the extrusion plate 4. A reserved groove 6 that penetrates the storage groove 5 is also inlaid on the outer wall of the second connecting rod 32.

[0033] The reserved groove 6 is engaged with the extrusion plate 4. After the extrusion plate 4 is engaged into the interior of the storage groove 5, it will be ejected at the position of the reserved groove 6 to achieve the effect of limiting.

[0034] Specifically, in this application, when the bracket main body 1 is unfolded, the distance between the two mounting rings 2 will be shortened. Therefore, the first connecting rod 31 and the second connecting rod 32 between the two mounting rings will be engaged, so that the first connecting rod 31 drives the extrusion plate 4 at its top to be engaged into the interior of the storage groove 5 inside the second connecting rod 32. When the first connecting rod 31 and the second connecting rod 31 are engaged to the final position, at this time, the extrusion plate 4 outside the first connecting rod 31 can be engaged with the reserved groove 6. Therefore, at this time, the extrusion plate 4 will be reset inside the reserved groove 6 and protrude outwards, so as to be extruded with the blood vessel wall. Therefore, the effect of limiting the entire main body 1 can be achieved. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vascular intervention stent, comprising: The support body (1) is in the form of a hollow cylindrical structure, and the outer wall of the cylindrical structure is in the form of a hollow structure; It is characterized in that Also includes; A mounting ring (2) is provided at upper and lower positions of the hollow cylindrical structure of the support body (1); The limiting mechanisms (3) are distributed at equal angles outside the two mounting rings (2); the bracket body (1) is arranged toward the inside of the mounting ring (2), and the limiting mechanisms (3) are arranged toward the outside of the mounting ring (2).

2. A vascular intervention stent according to claim 1, characterized in that: The mounting ring (2) is integrally mounted between the top ends of both sides of the bracket body (1), and its material is the same as that of the bracket body (1).

3. The vascular intervention stent according to claim 1, characterized in that: The limiting mechanism (3) comprises a first connecting rod (31) and a second connecting rod (32), wherein the first connecting rod (31) and the second connecting rod (32) are distributed and arranged inside the two mounting rings (2), and the first connecting rod (31) and the second connecting rod (32) are engaged with each other.

4. A vascular intervention stent according to claim 3, characterized in that: An extrusion plate (4) is integrally mounted on the outer side of the bottom of the first connecting rod (31), and the outer side of the extrusion plate (4) is arranged in an arc-shaped structure.

5. The vascular intervention stent according to claim 4, characterized in that: A receiving groove (5) is embedded on the inner side of the second connecting rod (32), and the receiving groove (5) is used to engage with the first connecting rod (31) and the extrusion plate (4). A reserved groove (6) penetrating the receiving groove (5) is also embedded on the outer wall of the second connecting rod (32).

6. The vascular intervention stent according to claim 5, characterized in that: The reserved groove (6) is engaged with the extrusion plate (4), and after the extrusion plate (4) is engaged with the interior of the storage groove (5), it is pushed out at the position of the reserved groove (6), thereby achieving a limiting effect.

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