Patent ID: 7223263
Filing Date: 2007-05-29
Classification: A61M

Abstract:
1. A catheter comprising: a tip end portion which is formed of a single-pipe tube and is adapted to be implanted in an abdominal cavity, and in which a plurality of through-hole rows are formed, the through-hole row including a plurality of through-holes for draining formed so as to penetrate a side wall of the single-pipe tube and to be separated by a predetermined interval along an axial direction of the single-pipe tube; and a projection portion which is projected outside from an abdomen outer wall, wherein a plurality of grooves are provided at an outer peripheral surface of the tip end portion, each individual groove of the plurality of grooves communicates with the plurality of through-holes at side surfaces of said through-holes along a direction in which said through-hole row extends, said each groove is narrower than a diameter of said through-holes and is formed only at an outer peripheral surface of said tip end, a depth of each groove is 0.8 mm to 1.0 mm, and each groove is formed such that the width of the groove is narrower at the inner portion thereof than at the opening thereof, and such that the depth of the groove is greater than the width of the groove at the groove opening.