An artificial mitral valve interventional replacement device and its interventional method

Abstract

Provided is an artificial valve intervention replacement device applied to mitral insufficiency, comprising a supporting body (1) and artificial valves (2), the lower edge of the supporting body (1) is a conical cylinder structure with a D-shaped cross section, multiple stopping ropes (4) are arranged in the supporting body (1), and the multiple artificial valves (2) are connected to the lower edge and can move along with motion of the natural valve (3) of a patient. The intervention replacement device does not affect the functions of the left chamber outflow channel and the aortic valve, the function of the natural valve (3) of the mitral valve is reserved, the natural blood flow is used for driving the artificial valve (2) and the aortic valve (3) to move in the same direction, and the artificial valve (2) can be completely closed at the contraction period to prevent backflow of the mitral valve.

Description

technical field [0001] The invention belongs to the field of biomedical devices, and in particular relates to an artificial mitral valve intervention replacement device and an intervention method thereof. Background technique [0002] Mitral regurgitation (MitraI Regurgitation, MR) is a common heart valve disease, the basic pathological change is mitral regurgitation. When the left ventricle contracts, the blood flows from the left ventricle into the aorta and enters the left atrium with less resistance through the incompetent mitral valve. Increased left atrial pressure can cause increased pulmonary vein and swollen capillary pressure, which in turn dilates and congests. At the same time, the diastolic volume load of the left ventricle increases, and the left ventricle expands. Patients with advanced mitral regurgitation may develop pulmonary hypertension and global heart failure. [0003] At present, the mitral valve prosthesis in the prior art needs to be anchored on t...

AI Technical Summary

Problems solved by technology

For another example, the application publication number is CN201711162783, and the patent document named "Mitral Valve Parking Device, System and Method", as shown in Figure 10-12, has a hook-shaped bracket on the helical anchor for fixing the anchor. , this fixation method will also cause ventricular damage

In the prior art, the working principle that three arc-shaped valve leaflets expand and close under the impact of blood flow is mostly used. This closing mode must use biological materials, such as bovine pericardium and pig heterogeneous valves, because non-biological artificial synthesis The material will undergo fatigue deformation during the closing process of long-term blood flow impact expansion, and the slight deformation will cause the three valve leaflets to not fit tightly, and then regurgitation will occur. However, there is a risk of heterogeneity in the use of biological materials, and it is inevitable in the long run. Calcification leads to valve failure, and the service life of the existing artificial biological valve is about ten years

[0004] In addition, the existing mitral valve anchoring devices squeeze the natural valve leaflets on the side wall of the ventricle, replacing the natural valve leaflets with artificial valve leaflets, so that the natural valve leaflets completely lose their own functions

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