PROBLEM TO BE SOLVED: To provide a new technique for detecting a needle slip while reducing a burden of a patient who is having an infusion therapy.SOLUTION: An infusion needle 10 includes: a tubular needle tube section having an opened tip part an infusion supplying part for supplying an infusion to be delivered to the needle tube section a pressure transmitting part from which a pressure of the tip is transmitted and an insertion part provided to a base-side which is opposite side of a tip of the needle tube part and through which a non-flexible needle with a piercing part at a tip thereof is inserted. The needle tube section has a multi-tube structure having an outer tube 20 and an inner tube 18, and includes a first channel between the outer tube 20 and the inner tube 18 and a second channel inside the inner tube 18. The inner channel is formed of an elastic material. An infusion supplying part communicates with one of the first channel and the second channel, and the pressure transmitting part communicates with the other of the first channel and the second channel.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2017,JPO&INPIT【課題】輸液中の患者の負担を軽減しつつ針抜けを検知できる新たな技術を提供する。【解決手段】輸液針10は、先端部が開口した管状の針管部と、針管部へ送出する輸液が供給される輸液供給部と、先端部の圧力が伝達される圧力伝達部と、針管部の先端部と反対側の基端部側に設けられた、先端に穿刺部を有する非可撓性針が抜き去り可能に挿入される挿入部と、を備える。針管部は、外管20と内管18とを有する多重管構造であって、外管20と内管18との間の第1流路および内管18の内部の第2流路を有する。内管は、弾性材料で形成されており、輸液供給部は、第1流路および第2流路の一方と連通しており、圧力伝達部は、第1流路および第2流路の他方と連通している。【選択図】図5
