Intravascular stent

Abstract

The utility model discloses an intravascular stent, and belongs to the technical field of intravascular stents. Comprising a support ring, telescopic assemblies are arranged at the top of the support ring, each telescopic assembly comprises a fixing plate, an air inlet is formed in the side wall of the fixing plate, an inflation pipe is arranged at one end of the air inlet, an air bag is arranged at one end of the inflation pipe, an air guide pipe is arranged on the other side of the air bag, and a moving plate is arranged on the circumferential outer wall of the air guide pipe; a medicine storage groove is formed in an inner cavity of the support ring, and a plurality of medicine outlet holes are formed in the circumferential outer wall of the support ring. Air is conveyed to the inflation tube through the air inlet, the air bag is expanded, the movable plate is pushed to move outwards, extending and unfolding of the intravascular stent are facilitated, the air inlet is closed through the cover plate to prevent air from leaking after installation is completed, medicine is stored through the medicine storage groove, the service life of the intravascular stent is effectively prolonged, and the service life of the intravascular stent is prolonged. Displacement of the intravascular stent is avoided through the fixing assembly. The structural design is convenient to adapt to different length requirements, and the stability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to vascular stent technical field, more specifically, relate to a intravascular stent. BACKGROUND

[0002] Intravascular stent is a medical instrument for treating coronary heart disease and other cardiovascular and cerebrovascular diseases, and vascular stent refers to implanting an intravascular stent in a lesion segment on the basis of lumen balloon expansion to support the stenosis and occlusion segment of the blood vessel, reduce the elastic recoil and reshaping of the blood vessel, and keep the lumen blood flow unobstructed. It is divided into coronary stent, cerebral vascular stent, renal artery stent and aortic stent.

[0003] The prior art patent document with the publication number CN214857825U provides an intravascular stent, which is an internal hollow tubular structure with a hollow surface. The intravascular stent includes a ring-shaped strip and a straight-line connecting rod perpendicular to the ring-shaped strip. The degradable elastic film continuously adheres to the stent and the blood vessel by its own elasticity, which can assist in providing stent support performance and form a smooth film layer on the inner surface of the stent to prevent the formation of acute thrombus.

[0004] Although the device has many benefits, it still has the following problems: the intravascular stent is integrally formed during use, which cannot adapt to different length requirements; secondly, the stent is not stable enough when installed in the blood vessel, which needs to be improved. In view of this, we propose an intravascular stent. UTILITY MODEL CONTENT

[0005] Technical problem to be solved

[0006] The utility model aims to provide an intravascular stent to solve the problem of the existing technology that cannot adapt to different length requirements and is not stable enough when installed.

[0007] 2. Technical scheme

[0008] An intravascular stent includes a stent ring, a telescopic assembly is arranged on the top of the stent ring, the telescopic assembly includes a fixed plate, an air inlet is formed in the side wall of the fixed plate, a gas charging pipe is arranged at one end of the air inlet, a gas bag is arranged at one end of the gas charging pipe, a gas guide pipe is arranged on the other side of the gas bag, a moving plate is arranged on the circumferential outer wall of the gas guide pipe, the moving plate is slidably connected with the inner wall of the fixed plate, a cover plate is arranged on the other side of the air inlet, a plurality of fixed assemblies are arranged on the side wall of the stent ring, a medicine storage groove is formed in the inner cavity of the stent ring, and a plurality of medicine outlet holes are formed in the circumferential outer wall of the stent ring.

[0009] Preferably, the fixed assembly includes a connecting rod, a contact ball is arranged at one end of the connecting rod, a biological glue layer is arranged on the circumferential outer wall of the contact ball, and a degradable film is arranged on the circumferential outer wall of the biological glue layer.

[0010] Preferably, the moving plate is provided with a plurality of limiting grooves at the top, the spring is arranged at the top of the inner cavity of the fixed plate, and the bottom of the spring is provided with a limiting block clamped in the limiting groove.

[0011] Preferably, the plurality of limiting grooves are arranged at equal intervals, and the size and position of the limiting grooves are matched with the size and position of the limiting block.

[0012] Preferably, the other end of the moving plate is provided with another moving plate, and the other end of the air duct is fixedly connected with another air bag.

[0013] Preferably, the connecting rod extends to the outer side of the circumference of the support ring, and the fixed assembly is arranged on the side wall of the first and last support rings.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a gas inlet is transported to the gas bag of gas, makes the air bag swell, thereby propelling the moving plate to move outward, and the gas is made to flow into another air bag through the air duct, thereby making a plurality of moving plates drive the support ring to move, facilitating the extension and unfolding of the intravascular stent, and after installation, the gas inlet is closed through the cover plate to prevent gas leakage, the limiting block is abutted with the limiting groove through the spring extrusion, thereby fixing the moving plate, the medicine is stored through the medicine storage groove, and the use time of the intravascular stent is effectively prolonged.

[0017] Secondly, the biological glue layer is adhered to the inner wall of the blood vessel, so that the intravascular stent displacement is avoided, the stability is improved, and the biological glue layer is prevented from being directly exposed and adhered to other parts through the degradable film. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the partial structure section schematic diagram of the utility model;

[0020] Figure 3 It is the telescopic subassembly partial structure section schematic diagram of the utility model;

[0021] Figure 4 It is Figure 2 It is the enlarged schematic diagram of A in the middle;

[0022] Figure 5 It is the fixed assembly partial structure section schematic diagram of the utility model;

[0023] Label explanation in the figure: 1, support ring; 2, telescopic assembly; 3, fixed assembly; 4, medicine storage groove; 5, medicine outlet hole; 201, fixed plate; 202, air inlet; 203, inflation tube; 204, air bag; 205, air guide tube; 206, moving plate; 207, cover plate; 208, limiting groove; 209, spring; 210, limiting block; 301, connecting rod; 302, contact ball; 303, biological glue layer; 304, degradable film. DETAILED DESCRIPTION

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0025] In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0026] In the description of the present application, it should be noted that, unless otherwise specifically specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected internally between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Please refer to Figures 1-5 , the present application provides a technical scheme:

[0028] The utility model provides an intravascular stent, including stent ring 1, the top of stent ring 1 is fixed with telescopic component 2, telescopic component 2 includes fixed plate 201, the side wall of fixed plate 201 is equipped with air inlet 202, one end of air inlet 202 is fixed with inflation tube 203, one end of inflation tube 203 is fixed with air bag 204, the other side of air bag 204 is fixed with gas guide pipe 205, and the circumferential outer wall of gas guide pipe 205 is fixed with moving plate 206, moving plate 206 is slidably connected with the inner wall of fixed plate 201, and the other side of air inlet 202 is hinged with cover plate 207, a plurality of fixed components 3 are fixed on the side wall of stent ring 1, and the inner chamber of stent ring 1 is equipped with medicine storage groove 4, and a plurality of medicine outlet holes 5 are formed in the circumferential outer wall of stent ring 1.

[0029] Specifically, the fixed component 3 includes a connecting rod 301, the connecting rod 301 has a contact ball 302 fixed at one end, the contact ball 302 has a biological glue layer 303 fixed on the circumferential outer wall, and the biological glue layer 303 is covered with a degradable film 304. The biological glue layer 303 adheres to the inner wall of the blood vessel, thereby avoiding displacement of the intravascular stent and improving stability. The degradable film 3 prevents the biological glue layer 303 from being directly exposed and adhered to other parts.

[0030] Further, the moving plate 206 has a plurality of limiting grooves 208 formed at the top, the fixed plate 201 has a spring 209 fixed at the top of the inner chamber, and the spring 209 has a limiting block 210 fixed in the limiting groove 208. The limiting block 210 is extruded from the limiting groove 208 by moving the moving plate 206, the movement of the moving plate 206 is stopped, the limiting block 210 is abutted with another limiting groove 208 by the rebound force of the spring 209, thereby fixing the moving plate 206, and then fixing the intravascular stent.

[0031] It is worth noting that the plurality of limiting grooves 208 are equally spaced, and the size and position of the limiting groove 208 match the size and position of the limiting block 210. The equally spaced limiting grooves 208 facilitate precise control of the length of the intravascular stent extending and unfolding.

[0032] It is worth noting that the moving plate 206 has another moving plate 206 fixed at the other end, and the gas guide pipe 205 is fixedly connected with another air bag 204 at the other end. The gas flows into another air bag 204 by fixing the gas guide pipe 205 at the other end with another air bag 204, so that the plurality of moving plates 206 drive the stent ring 1 to move, facilitating the extension and unfolding of the intravascular stent.

[0033] In addition, the connecting rod 301 extends to the outer side of the circumference of the stent ring 1, and the fixing assembly 3 is fixedly arranged on the side wall of the first and last stent ring 1.

[0034] Working principle: when the device needs to install the intravascular stent, gas is transported to the inflation pipe 203 through the gas inlet 202, so that the air bag 204 expands, thereby pushing the moving plate 206 to move outward, and the other end of the gas guide pipe 205 is fixedly connected with the other air bag 204, so that gas flows into the other air bag 204, thereby driving the stent ring 1 to move, facilitating the extension of the intravascular stent, and the limiting block 210 is extruded from the limiting groove 208 through the movement of the moving plate 206, the movement of the moving plate 206 is stopped, the limiting block 210 is abutted with the other limiting groove 208 through the rebound force of the spring 209, thereby fixing the moving plate 206, and then fixing the intravascular stent, after installation, the air inlet 202 is closed by the cover plate 207 to prevent gas leakage, the medicine storage groove 4 stores medicine, effectively prolongs the use time of the intravascular stent, the biological glue layer 303 is adhered to the inner wall of the blood vessel, thereby avoiding the displacement of the intravascular stent, improving the stability, and the degradable film 3 prevents the biological glue layer 303 from being directly exposed and adhered to other parts.

[0035] The basic principle, main characteristics and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An intravascular stent comprising a stent ring (1), characterized in that: The support ring (1) top is equipped with telescopic assembly (2), telescopic assembly (2) includes fixed plate (201), the fixed plate (201) side wall is equipped with air inlet (202), the air inlet (202) one end is equipped with inflation tube (203), the inflation tube (203) one end is equipped with air bag (204), the air bag (204) other side is equipped with air pipe (205), the air pipe (205) circumferential outer wall is equipped with moving plate (206), the moving plate (206) with fixed plate (201) inner wall slidingly connected, the air inlet (202) other side is equipped with cover plate (207), the support ring (1) side wall is equipped with a plurality of fixed components (3), the support ring (1) inner chamber is equipped with medicine storage groove (4), the support ring (1) circumferential outer wall is equipped with a plurality of medicine outlet holes (5).

2. The endovascular stent of claim 1, wherein: The fixed component (3) includes a connecting rod (301), the connecting rod (301) one end is equipped with contact ball (302), the contact ball (302) circumferential outer wall is equipped with biological glue layer (303), the biological glue layer (303) circumferential outer wall is equipped with degradable film (304).

3. The endovascular stent of claim 2, wherein: The moving plate (206) top is equipped with a plurality of limiting grooves (208), the fixed plate (201) inner chamber top is equipped with spring (209), the spring (209) bottom is equipped with the limiting block (210) clamped in the limiting groove (208) inside.

4. The endovascular stent defined in Claim 3, wherein: A plurality of the limiting groove (208) is equidistantly arranged, the size, position of the limiting groove (208) and the size, position of the limiting block (210) are matched.

5. The endovascular stent defined in Claim 4, wherein: The moving plate (206) other end is equipped with another moving plate (206), the air pipe (205) other end is fixedly connected with another air bag (204).

6. The endovascular stent defined in Claim 5, wherein: The connecting rod (301) extends to the circumferential outside of the support ring (1), and the fixed component (3) is arranged on the side wall of the first and last support ring (1). The connecting rod (301) extends to the circumferential outside of the support ring (1), and the fixed component (3) is arranged on the side wall of the first and last support ring (1).

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