The invention relates to a valve annulus
retractor, comprising a fixing nail, a nailing device, a connecting line, a knotter and a line cutter. The fixing nail comprises a screw needle and a fixing head, the screw needle is fixed on a proximal end of the fixing head, and the fixing head comprises a spiral segment and a contact spiral end at a distal end; the nailing device comprises an outer tubeand a rotary push member, the inner wall of the outer tube is provided with an internal thread matched with the spiral segment, and the proximal end of the rotary push member is provided with a structure matched with the contact spiral segment. During nailing, the fixing nail is assembled in the outer tube and cooperates with the rotary push member to screw to the proximal end of the outer tube, the connecting line is connected with the fixing head, and the connecting line is knotted by the knotter and
cut by the line cutter. The valve annulus
retractor of the invention can realize effective contraction treatment for a
mitral valve annulus or a tricuspid annulus to reduce the
reflux of a valve, the operation is simple and the safety is high.