Patent ID: 8062019
Filing Date: 2011-11-22
Classification: A61M,B29C,B29L

Abstract:
1. An extrusion mold for a medical application tube made by a soft thermoplastic resin in which a plurality of flow paths by sandwiching the axial portion are formed therein, in which said mold comprises: a mold body having recess portions penetrating from one end to the other end; a pin disposed within said recess portions of said mold body for forming a tapered cylindrical rear side mold space for passing a soft thermoplastic resin molding material between the inner peripheral surfaces of said recess portions; a land portion for forming a tip end side mold space configuring the tip end portion of said pin and including a cross sectional profile for forming said tube for medical tube between the tip end side portion in the inner peripheral surface of said recess portions, in said cross sectional profiles of the tip end side mold spaces formed by the inner peripheral surfaces of said recess portions and the surface of said land portion, the cross sectional profile at the tip end side portion is same as that of said tube for medical tube and the cross sectional profile at the rear side portion is the intermediate profile of that at the tip end portion of the tip end side mold space and that at the rear end side mold space; and wherein a cross sectional profile of the rear side portion of the tip end side mold space is formed such that each tip end portion of a cross piece is coupled to the ring like inner surface to form four flow pathways, the cross sectional profile of the tip end portion of the tip end side mold space is formed such that a predetermined portion of the ring like portion is notched to communicate at least one of four flow pathways with the outside.