A catheter assembly (1) includes an inner member (12) having a proximal end (15), a distal end (13), and a lumen configured to store a hydrating fluid (28) An outer member (10) has a proximal end (19), a distal end (16), and a lumen configured to receive therein a portion of the inner member (12) The outer member (10) is movable relative to the inner member (12) at least one of between a first position (FIG. 1) preventing fluid (28) from passing out of the at least one drainage opening (14) from within the lumen of the inner member (12) and a second position (FIG. 2) allowing fluid (28) to pass out of the at least one drainage opening (14) from within the lumen of the inner member (12).近位端(15)と、遠位端(13)と、含水流体(28)を貯蔵するように構成されたルーメンとを有する内側部材(12)を含むカテーテル組立体(1)。外側部材(10)は、近位端(19)と、遠位端(16)と、内側部材(12)の一部を収容するように構成されたルーメンとを有する。外側部材(10)は、内側部材(12)に対して、流体(28)が内側部材(12)のルーメンの中から少なくとも1つの排液開口(14)の外に出るのを阻止する第1の位置(図1)と、流体(28)が内側部材(12)のルーメンの中から少なくとも1つの排液開口(14)の外に出ることができる第2の位置(図2)の間で可動である。【選択図】図1