Patent ID: 8551073

Claim:
A catheter device comprising: a flexible hollow tube body formed by a plurality of austenitic stainless steel wires tightly stranded cylindrically into a wire-rope configuration; a front end portion of an outer surface of said flexible hollow tube body being rendered smooth consecutively along a lengthwise direction of said flexible hollow tube body; a knife-edge circle front welded to a leading end of said flexible hollow tube body to serve as a blade which diametrically decreases progressively as approaching forward, a blade edge of said knife-edge circle front being outwardly arcuated in cross section from an entire outer surface of said knife-edge circle front along an axial direction thereof, and said knife-edge circle front being advanced to be rotated as a drill from a guide wire so as to perforate a hard clot area of an obstructed area, said hard clot area being pulverized by said knife-edge circle front to produce a hard clot powder; and helical grooves provided at an inner surface of said flexible hollow tube body, said helical grooves being formed by said austenitic stainless steel wires helically and tightly stranded in abutting relationship with each other, so as to carry away said hard clot powder in a rearward direction therealong.