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Valve stent avoiding coronary artery blockage

A technology for valves and coronary arteries, applied in the field of valve stents, can solve the problems of depression height, blockage of native valve leaflets to coronary vessels, etc., and achieve the effect of reducing caliber, reducing risk, and reducing trauma

Active Publication Date: 2019-02-19
NINGBO JENSCARE BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing technical limitations. Aiming at the situation that the aortic valve or other valve rings are replaced, which may cause the blockage of the native valve leaflets to the coronary vessels, a valve stent to avoid coronary blockage is proposed. Through A valve depressor is installed so that when the stent is installed, the height of the autogenous valve leaflet along the direction of the vessel wall or chamber wall is lowered, thereby preventing the autologous valve leaflet from blocking the coronary artery opening, improving the patient's survival rate, and reducing the risk of valve stent implantation. Secondary risks brought about by entry

Method used

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  • Valve stent avoiding coronary artery blockage
  • Valve stent avoiding coronary artery blockage
  • Valve stent avoiding coronary artery blockage

Examples

Experimental program
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specific Embodiment 1

[0039] At the annulus of the aorta, blood flows upward from the left ventricle to the ascending aorta. The annulus of the aortic valve has three unidirectional conduction native valve leaflets. Under normal conditions, the aortic valve formed by these three leaflets is constantly closed and open. When the blood of the left ventricle is actively ejected upward , the aortic valve swings upward and opens, and then the aortic valve returns to a horizontal state, and the three expanded leaflets form a blocking surface to prevent blood flowing into the ascending aorta from returning to the left ventricle. At the valve sinus of the aorta, there are two collateral vessels, the left coronary artery and the right coronary artery, and part of the blood that flows through the aortic valve is diverted from these two places to supply blood to the heart.

[0040] Figure 1a with 1b Shown is the valve prosthesis involved in the prior art. exist Figure 1a Among them, represented by Medtroni...

specific Embodiment 2

[0050] Such as Figure 4a with Figure 4b As shown, as an embodiment, a valve stent 100 for avoiding coronary occlusion includes a valve sewing section 110 and a clip 120, and the clip 120 is separately manufactured from the valve sewing section 110 connected together, one end of the clip 120 is fixedly connected to the valve sewing segment 210 , and the other end is free. A flap pressing device 130 is disposed between the clamping member 120 and the valve sewing section 110, and the flap pressing device 130 is a flexible rope. The free end of the clip 120 is provided with a connection structure 125, and the connection structure 125 is a hole. One end 2301 of the flap depressor 130 is connected to the clamping member 120 through the connecting structure 125, and the other end 1302 of the flap depressor 130 straddles the free edge of the native valve leaflet after release, and is After manual adjustment, it is connected with the valve sewing segment 110 . Further, the other...

specific Embodiment 3

[0059] Such as Figure 6a with Figure 6b As shown, as an embodiment, a valve stent 100 for avoiding coronary occlusion includes a valve sewing section 110 and a clamping part 120, and the clamping part 120 is integrated with the valve sewing section 110, One end of the clip 120 is fixedly connected to the valve sewing segment 110 , and the other end is free. A flap pressing device 130 is disposed between the clamping member 120 and the valve sewing section 110, and the flap pressing device 130 is a flexible rope. The free end of the clip 120 is provided with a connecting structure 125, one end 1301 of the flap pressing device 130 is connected to the clip 120 through the connecting structure 125, and the other end 1302 of the flap pressing device 130 is released After straddling the free edge of the native valve leaflet, the valve pressing device 130 is manually adjusted and connected to the heart tissue. Here, the cardiac tissue may be the apex, papillary muscle, collatera...

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Abstract

The invention relates to a valve stent avoiding coronary artery blockage. The valve stent comprises a valve sewing section and a clamping part, one end of the clamping part is fixedly connected with the valve sewing section, the other end of the clamping part is free, a valve pressing device is arranged between the clamping part and the valve sewing section, one end of the valve pressing device isconnected with the clamping part, and the valve pressing device crosses over the free edge of a primary autologous valve leaflet after release. By the aid of the valve pressing device, when the stentis implanted, the height of the autologous valve leaflet in opening along the direction of a blood vessel wall or a ventricle wall is reduced, the autologous valve leaflet is prevented from blockinga coronary artery opening, the survival rate of a patient is increased, and secondary risks caused by valve stent implantation are decreased.

Description

Technical field: [0001] The invention belongs to the field of medical devices and relates to a valve support for avoiding coronary blockage. Background technique: [0002] The shape of the heart is like an inverted, slightly flattened cone. If it is regarded as a head, the coronary arteries located on the top of the head and almost surrounding the heart are like a crown, which is the origin of its name. The coronary arteries are the arteries that supply blood to the heart. They originate from the root of the aorta (the ascending aorta), divide into two branches, and run on the surface of the heart. The left and right coronary arteries are the first pair of branches of the ascending aorta. The left coronary artery is a short trunk, which originates from the left aortic sinus, passes between the origin of the pulmonary artery and the left atrial appendage, travels 3 to 5 mm to the left front along the coronary sulcus, and immediately divides into the anterior interventricular...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
CPCA61F2/2412A61F2/2418A61F2/2436
Inventor 李毅斌郑玲和
Owner NINGBO JENSCARE BIOTECHNOLOGY CO LTD
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