Expandable guide sheath and apparatus

The equipment and the method of accessing body pipe 腔 are offered. As for equipment, at least 遠 which has a size for inserting in 管空 of a proximal end and the body contains an end and a proximal end, and the tubular component in which at least 遠 contains 延在する管腔 between ends. It moved forward, as for the possible reinforcement component, at least 遠 of the tubular component was prolonged from the end, and the long component has ended at least 遠 in a tip. The sheath which can expand meets at least 1 portion of a reinforcement component -- 延在し -- a sheath, The outline of a sheath can be made into the minimum and a sheath can expand in the state which specifies partially inner 腔 connecting with inner 腔 of a tubular component at least where it extended, from the contracted state which permits inserting in body pipe 腔 along with a reinforcement component. In one mode, a reinforcement component is carried to inside inner 腔 including inner 腔 of the inner side which moves freely within outside inner 腔 and outside inner 腔.