Monoleaflet mechanical valve

A monoleaflet mechanical valve, comprising:

• a mechanical valvular annulus, provided with a through-via in the middle;
• a limiting base, mounted at the bottom of the mechanical valvular annulus, wherein an open movement area is defined between the mechanical valvular annulus and the limiting base, and the top of the movement area is communicated with the through-via to form a blood passage;
• a movable valve leaflet and a guide rod, both located in the movement area, wherein the movable valve leaflet has a circular periphery and a top convex surface, and the movable valve leaflet is mounted on the guide rod and can reciprocate up and down along a trajectory direction of the guide rod, such that the movable valve leaflet can movably open or close an entire passage opening of the through-via;
• a middle portion of the movable valve leaflet is provided with a sliding hole which is matched with the guide rod for sliding, and the guide rod is inserted into the sliding hole, such that the movable valve leaflet can slide up and down in a reciprocating manner along the trajectory direction of the guide rod;
• and
• the limiting base is of an annular hollow structure, and a first supporting component for supporting the guide rod is connected within an inner diameter of the limiting base, and a bottom end of the guide rod is mounted on the first supporting component.