Atrial stent

Abstract

The application provides an atrial stent and relates to the technical field of medical devices.The atrial stent comprises a ball cage, a cylindrical stent, a sealing membrane and an artificial valve; the ball cage is supported in an atrium, and a ball cage opening is formed in the bottom end of the ball cage; the cylindrical stent extends from the ball cage opening to the inside of the ball cage; the sealing membrane covers the bottom of the ball cage and the cylinder wall of the cylindrical stent; and the artificial valve is located in the cylindrical stent.In the application, the ball cage is supported in the atrium after surgery, and the structure is stable, so that relative displacement of the ball cage and the original valve cannot be caused by the beating of the heart or the flushing of blood; and the blood in the atrium can flow into the ventricle through the cylindrical stent; the original valve still maintains the original function; the artificial valve and the original valve form a double-valve structure; and the regurgitation caused by the incomplete closure of the original valve during the output of the blood in the ventricle is blocked by the artificial valve, so that the functional defects of the original valve are complemented, and an ideal interventional treatment effect can be achieved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an atrial stent. Background Technology

[0002] The heart is divided into left and right ventricular septa, each containing a ventricle and an atrium. The ventricles are separated by the interventricular septum, and the atria are separated by the interatrial septum. Valves prevent backflow of blood between the atria, ventricles, and arteries. Specifically, the valve between the left atrium and left ventricle is the mitral valve; the valve between the right atrium and right ventricle is the tricuspid valve; the valve between the left ventricle and the great artery is the aortic valve; and the valve between the right ventricle and the pulmonary artery is the pulmonary valve.

[0003] If a valve cannot close completely or opens insufficiently due to disease or other reasons, it will lead to blood reflux and insufficient blood supply. For example, valvular stenosis causing poor blood flow or incomplete closure will result in insufficient blood supply to the heart, greatly increasing the burden on the heart and leading to heart failure. Traditional treatment for this type of valvular heart disease involves open-chest surgery, cardiac arrest, and, under hypothermic circulatory support, surgical repair of the valve or replacement with an artificial valve. After the surgery, the heart is restarted to complete subsequent procedures. The surgical trauma, risks, and long-term, expensive postoperative rehabilitation of valve replacement make many patients unwilling to undergo surgery.

[0004] With the continuous development of minimally invasive surgical techniques, artificial valves can be introduced into the patient's body through a catheter, that is, the heart valve is placed through minimally invasive interventional surgery. The surgery does not require opening the chest, so it is less traumatic and the postoperative recovery is faster. It provides a new solution for patients with valvular stenosis whose lives cannot be prolonged or whose pain cannot be relieved by conventional treatments.

[0005] However, due to the relatively short history of this technology, it still faces many challenges. For example, the existing stent structures for interventional artificial valves are still in the early stages of research, with limited types of stent structures available. Furthermore, these stents are prone to displacement under the pressure and scouring of blood flow after deployment, thus failing to achieve the desired interventional treatment results. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides an atrial stent that solves the problem of easy displacement of artificial valves.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] An atrial stent, the atrial stent comprising:

[0011] A ball cage, which is supported inside the atrium, has an opening at the bottom of the ball cage;

[0012] A cylindrical support extending from the opening of the ball cage into the interior of the ball cage;

[0013] A sealing membrane covers the bottom of the ball cage and the wall of the cylindrical support, so that the atrium and the left ventricle are connected only through the cylindrical support;

[0014] An artificial valve, wherein the artificial valve is located within a tubular stent.

[0015] Preferably, the outer side of the ball cage is provided with elastic barbs, which are arranged circumferentially around the opening of the ball cage and are driven into the inner wall of the atrium.

[0016] Preferably, the bottom of the ball cage is provided with a hook, which opens and hooks the original valve.

[0017] Preferably, the ball cage includes an upper ball cage and a lower ball cage; the upper ball cage and the lower ball cage are connected by a plurality of elastic elements.

[0018] Preferably, an expansion bracket is provided outside the ball cage, the expansion bracket is supported inside the atrium, and an expansion sealing membrane is provided between the bottom edge of the expansion bracket and the opening of the ball cage.

[0019] Preferably, the ball cage has an anti-blocking notch.

[0020] Preferably, the bottom sidewall of the ball cage is connected to an aortic stent, and an artificial aortic valve is disposed inside the aortic stent.

[0021] (III) Beneficial Effects

[0022] This invention provides an atrial stent. Compared with the prior art, it has the following advantages:

[0023] In this invention, the atrial stent can be introduced into the patient's body through a catheter without open-chest surgery, resulting in minimal trauma and rapid postoperative recovery. After surgery, the ball cage supports the atrium, providing structural stability. Neither heartbeats nor blood flushing can cause relative displacement between the stent and the original valve. Furthermore, blood within the atrium can flow into the left ventricle through the tubular stent. The original valve retains its original function, and the artificial valve and the original valve form a double-valve structure. During blood outflow from the left ventricle, regurgitation caused by incomplete closure of the original valve is blocked by the artificial valve, compensating for the functional defects of the original valve and achieving ideal interventional treatment results. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the ball cage and cylindrical support in Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of the central room support structure in Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the atrial stent installed in the atrium according to Embodiment 1 of the present invention;

[0028] Figure 4 This is a schematic diagram of the central room support structure in Embodiment 2 of the present invention;

[0029] Figure 5 This is a schematic diagram of the central room support structure in Embodiment 3 of the present invention;

[0030] Figure 6 This is a schematic diagram of the central room support structure in Embodiment 4 of the present invention;

[0031] Figure 7 This is a schematic diagram of the central room support structure in Embodiment 5 of the present invention;

[0032] Figure 8 This is a schematic diagram of the atrial stent with a top opening in Embodiment 6 of the present invention;

[0033] Figure 9 This is a schematic diagram of the atrial stent with a side wall opening in Embodiment 6 of the present invention;

[0034] Figure 10 This is a schematic diagram of the central room support structure in Embodiment 7 of the present invention. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] This application provides an atrial stent that solves the problem of easy displacement of artificial valves.

[0037] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0038] In this embodiment of the invention, the atrial stent can be introduced into the patient's body through a catheter without open-chest surgery, resulting in minimal trauma and rapid postoperative recovery. After surgery, the ball cage supports the atrium, providing structural stability. Neither heartbeats nor blood flushing can cause relative displacement between the stent and the original valve. Furthermore, blood in the atrium can flow into the ventricle through the tubular stent. The original valve retains its original function, and the artificial valve and the original valve form a double-valve structure. During the outflow of blood from the ventricle, the regurgitation caused by the incomplete closure of the original valve is blocked by the artificial valve, thus compensating for the functional defects of the original valve and achieving the ideal interventional treatment effect.

[0039] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0040] Example 1:

[0041] like Figures 1-3 As shown, the present invention provides an atrial stent, the atrial stent comprising:

[0042] A ball cage 10 is supported inside the atrium, and a ball cage opening 11 is provided at the bottom end of the ball cage 10.

[0043] A cylindrical support 20 extends from the opening 11 of the ball cage into the interior of the ball cage 10;

[0044] A sealing membrane 30 covers the bottom of the ball cage 10 and the cylindrical wall of the cylindrical support 20, so that the atria and ventricles are connected only through the cylindrical support 20;

[0045] Artificial valve 31, which is located within the tubular stent 20.

[0046] The atrial stent can be introduced into the patient's body through a catheter without opening the chest, resulting in minimal trauma and rapid postoperative recovery. After the procedure, the ball cage 10 is supported within the atrium, providing structural stability. Neither the heartbeat nor blood flushing can cause relative displacement between the stent and the original valve. Furthermore, blood within the atrium can flow into the ventricle through the tubular stent 20. During the blood outflow process from the ventricle, the regurgitation caused by the incomplete closure of the original valve is blocked by the artificial valve 31, compensating for the functional defects of the original valve and achieving the ideal interventional treatment effect.

[0047] Example 2:

[0048] like Figure 4As shown, the ball cage 10 is provided with elastic barbs 12 on its exterior. The elastic barbs 12 are arranged circumferentially around the opening 11 of the ball cage and are driven into the inner wall of the atrium, restricting the movement of the ball cage 10 within the atrium and further improving the connection stability between the ball cage 10 and the atrium. At the same time, the elastic barbs ensure that the puncture force is evenly distributed in the atrial tissue through their own elastic structure, preventing local puncture of the heart.

[0049] Example 3:

[0050] like Figure 5 As shown, the bottom of the ball cage 10 is provided with a hook 13, which opens and hooks the original valve, causing the original valve to lose some of its function and preventing insufficient blood supply caused by insufficient opening of the original valve.

[0051] Example 4:

[0052] like Figure 6 As shown, the ball cage 10 includes an upper ball cage 14 and a lower ball cage 15; the upper ball cage 14 and the lower ball cage 15 are connected by a plurality of elastic elements 16; such that the upper ball cage 14 fits against the top of the atrium and the lower ball cage 15 fits against the bottom of the atrium. Under the elastic action of the elastic elements 16, the ball cage 10 can contract and relax synchronously with the atrium, further improving the connection stability and fit between the ball cage 10 and the atrium.

[0053] Example 5:

[0054] like Figure 7 As shown, an expansion bracket 40 is provided outside the ball cage 10. The expansion bracket 40 is supported in the atrium. An expansion sealing membrane 41 is provided between the bottom edge of the expansion bracket 40 and the opening 11 of the ball cage to reduce paravalvular leakage.

[0055] Example 6:

[0056] like Figure 8 , Figure 9 As shown, the top and / or sidewall of the ball cage 10 are provided with anti-blocking notches 17 to prevent the ball cage 10 from affecting the blood flow rate, causing blood coagulation or even embolism.

[0057] Example 7:

[0058] like Figure 10 As shown, the bottom sidewall of the ball cage 10 is connected to an aortic stent 50, and an artificial aortic valve is installed inside the aortic stent 50; the atrial stent and the aortic stent 50 are integrated into one, so that in the process of performing surgery on patients who need to replace both the mitral valve and the aortic valve, the atrial stent and the aortic stent 50 can be introduced into the patient's body through the aorta using a catheter in a single operation.

[0059] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0060] In this embodiment of the invention, the atrial stent can be introduced into the patient's body through a catheter without open-chest surgery, resulting in minimal trauma and rapid postoperative recovery. After surgery, the ball cage supports the atrium, providing structural stability. Neither heartbeats nor blood flushing can cause relative displacement between the stent and the original valve. Furthermore, blood in the atrium can flow into the ventricle through the tubular stent. The original valve retains its original function, and the artificial valve and the original valve form a double-valve structure. During the outflow of blood from the ventricle, the regurgitation caused by the incomplete closure of the original valve is blocked by the artificial valve, thus compensating for the functional defects of the original valve and achieving the ideal interventional treatment effect.

[0061] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An atrial stent, characterized in that, The atrial stent includes: A ball cage (10) is supported in the atrium, and a ball cage opening (11) is provided at the bottom end of the ball cage (10); the ball cage (10) includes an upper ball cage (14) and a lower ball cage (15); the upper ball cage (14) and the lower ball cage (15) are connected by a number of elastic members (16); A cylindrical support (20) extends from the opening (11) of the ball cage into the ball cage (10); A sealing membrane (30) covers the bottom of the ball cage (10) and the cylindrical wall of the cylindrical support (20), so that the atria and ventricles are connected only through the cylindrical support (20); Artificial valve (31), which is located within the tubular support (20).

2. The atrial stent as described in claim 1, characterized in that, The ball cage (10) is provided with elastic barbs (12) on the outside. The elastic barbs (12) are arranged around the opening (11) of the ball cage and are driven into the inner wall of the atrium.

3. The atrial stent as described in claim 1, characterized in that, The bottom of the ball cage (10) is provided with a hook (13), which opens and hooks the original valve.

4. The atrial stent as described in claim 1, characterized in that, An expansion bracket (40) is provided outside the ball cage (10). The expansion bracket (40) is supported in the atrium. An expansion sealing membrane (41) is provided between the bottom edge of the expansion bracket (40) and the opening (11) of the ball cage.

5. The atrial stent as described in any one of claims 1 to 4, characterized in that, The ball cage (10) has an anti-blocking notch (17).

6. The atrial stent as described in any one of claims 1 to 4, characterized in that, The bottom sidewall of the ball cage (10) is connected to an aortic stent (50), and an artificial aortic valve is provided inside the aortic stent (50).

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