The access device in order to arrange the medical goods inside the internal space, includes the needle, the extended vessel and the sheath. As for the needle, the long small needle itself and the needle itself extending can include with the hub which is present from there. The extended vessel slide is arranged possibly on the needle itself, extending includes with the long small extended vessel shaft which is present from the extended vessel hub and the extended vessel hub. The sheath, the tubular sheath itself and can include with the sheath hub which the tubular sheath itself which are arranged on the extended vessel is connected. The tubular sheath itself, when it is bleached in heat, can include the material which shows the decrease of rigidity.< Selective figure >Figure 1A医療物品を体内空間内に配置するためのアクセスデバイスは、針、拡張器およびシースを含む。針は、長細針本体と、針本体がそこから延在するハブとを含み得る。拡張器は、スライド可能に針本体上に配置され、拡張器ハブと、拡張器ハブから延在する長細拡張器シャフトとを含む。シースは、拡張器上に配置された管状シース本体と、管状シース本体と連結されたシースハブとを含み得る。管状シース本体は、熱に晒されると剛性の低下を示す材料を含み得る。【選択図】図1A
