PROBLEM TO BE SOLVED: To provide a general-purpose medical tube hardly adsorbing a chemical, not eluting a plasticiser, having large breaking strength, and elastic.SOLUTION: The medical three-layer tube 102 includes an inner layer 121 which is a material (PBD) having chemical non-adsorptive properties and plasticizer non-eluting properties, and an outer layer 123 which is a material (PBD) having easily adhesive properties or easily bondable properties to a connector and other medical connecting components. A middle layer 122 is provided between the inner layer 121 and the outer layer 123 and the material of the middle layer is molded as a breaking resistant material that adheres to both the inner layer and outer layer, that is, as PBD+TPU.COPYRIGHT: (C)2013,JPO&INPIT【課題】薬剤を吸着しにくく可塑剤も溶出せず、かつ、破断強度の大きく弾性に富む汎用医療用チューブを提供すること。【解決手段】内層121が薬剤非吸着性と可塑剤非溶出性とを備える素材(PBD)、外層123がコネクタその他の医療用接続部品に対する易接着性素材ないし易接合性素材(PBD)であって、内層121と外層123との間に中間層122を設け、中間層122の素材を内層とも外層とも接着する耐破断性素材、すなわちPBD+TPUとして成型したことを特徴とする医療用三層チューブ102。【選択図】図2
