Patent ID: 9585689
Date: 2017-03-07
CPC Classifications: A61B,F04C

Claim:
1. An access port comprising: an inner tube and an outer tube fitted together so as to be movable relative to each other in an axial direction, wherein the inner tube and the outer tube each has holding surfaces having substantially complementary shapes to each other, the holding surfaces are brought close to or away from each other by relative movement of the inner tube and the outer tube, wherein the holding surfaces comprise a distal end face of the outer tube and an opposing surface provided at a position on a distal end of the inner tube opposing the distal end face, wherein the diameter of an outer end of the opposing surface is larger than a diameter of an inner end of the distal end face, wherein the distal end face of the outer tube has a tapered surface shape that tapers toward the distal end, and the opposing surface of the inner tube has a tapered inner surface shape.