Abstract: An access sheath is provided. The access sheath comprises: an outer sheath extending in one direction and having a cavity formed along a longitudinal axis of the outer sheath; and an inner sheath arranged in the cavity of the outer sheath, and having a plurality of balloons configured to expand, wherein the outer sheath includes: an outer body formed of a first material; and an elastic connection part formed of a second material which is more flexible than the first material of the outer body, and wherein a diameter of the outer sheath increases by the elastic connection part which expands according to an expansion of the balloons.

Abstract: An access sheath is provided. The access sheath comprises: an outer sheath extending to be long in one direction, and having an insertion space formed in a lengthwise direction; and an inner sheath drawn into the insertion space of the outer sheath, and having a plurality of balloons, wherein the outer sheath comprises: an outer body having a cutting gap formed along the lengthwise direction of the outer sheath; and an elastic connection part filled in the cutting gap so as to connect a cutting area of the outer body, and provided as an elastic material more flexible than that of the outer body, wherein the elastic connection part expands and the diameter of the outer body increases according to an expansion of the balloons.