PROBLEM TO BE SOLVED: To provide a joint device for transfusion in a medical transfusion apparatus having no problem of toxicity to a human body, having excellent mechanical strength, and allowing an operator to easily, visually recognize a liquid flow.SOLUTION: The joint device for transfusion in the medical transfusion apparatus, connects two or more transparent transfusion tubes for circulating liquid to be transfused, and controls the flow of the transfusion. The joint device for transfusion includes two or more transparent joining tubes 11 and 13 for connecting the two or more transparent transfusion tubes a transparent connecting member 15 for connecting the two or more joining tubes at connection parts and opening/closing valve means 17 disposed and formed at one or more connection parts. Connecting areas 19a and 19b generating heat by absorbing laser light, are formed at one connection parts of the respective joining tubes and the connecting member. In the connecting areas, the joining tubes 11 and 13 and the connecting member 15 are fused by laser.COPYRIGHT: (C)2014,JPO&INPIT【課題】人体に対する毒性の問題がなく、機械強度に優れ、液体の流れを容易に視認できる医療用輸液装置における輸液用継ぎ手装置の実現を課題とする。【解決手段】輸液用継ぎ手装置は、医療用輸液装置において、輸液される液体を流通させる透明な2以上の輸液チューブを連結させ、輸液の流れを制御する装置であって、透明な2以上の輸液チューブを接合されるための透明な2以上の接合チューブ11、13と、これら2以上の接合チューブを結合部で結合させる透明な連結部材15と、結合部の1以上に配置形成される開閉弁手段17と、を有し、各接合チューブと連結部材の一方の結合部位に、レーザ光を吸収して発熱する結合領域19a、19bが形成され、結合領域において、接合チューブ11、13と連結部材15がレーザ融着されていることを特徴とする。【選択図】図1
