Catheter and its method of preparation. The catheter, catheter body, joining the hub, extension line, and includes a connector, the catheter body, the tip region having a proximal end, a distal end, the length of the outer surface, 10cm as measured from the distal end of the catheter body , and having at least two lumens, each lumen of the catheter body proximal end, a distal end, at least 3: and a one lumen aspect ratio and lumen surface, the catheter body of at least two One of the distal end of the lumen, and (i) either not adjacent, or (ii) is laser cut, the two lumen surface of the lumen of the outer surface or the catheter body in the distal region of the catheter body is at least about 50nm It comprises a hydrophilic polymer layer having an average dry thickness of. .BACKGROUNDカテーテルおよびその調製方法。カテーテルは、カテーテル本体、接合ハブ、延長ライン、およびコネクターを含み、カテーテル本体は、近位端、遠位端、外側表面、カテーテル本体の遠位端から測定して10cmの長さを有する先端領域、および少なくとも2つの内腔を有し、カテーテル本体の各内腔は、近位端、遠位端、少なくとも3:1の内腔アスペクト比および内腔内表面を有し、カテーテル本体の少なくとも2つの内腔の遠位端は、(i)隣接しないか、又は(ii)レーザーカットされ、カテーテル本体の先端領域の外側表面またはカテーテル本体の2つの内腔の内腔内表面は、少なくとも約50nmの平均乾燥厚さを有する親水性ポリマー層を含む。【選択図】図1
