The weaving process of the rack valve with radial protrusion structure is one, in which the elastic metal wires are made to move forwards along the outer contour spiral of the rack.

• 本发明的支架瓣膜形状、结构和功能更优化，其径向突出结构有利于支架瓣膜轴向和旋转方向的准确定位和固定。