PROBLEM TO BE SOLVED: To provide a new technique for detecting a needle slip with a simple configuration.SOLUTION: An infusion needle 10 includes: a tubular needle tube section having an opened tip part a needle tube base 14 provided on one end side of the needle tube section in a longitudinal direction an infusion supplying part provided to the needle tube base 14 and that supplies the infusion to be delivered to the needle tube section a pressure transmitting part provided to the needle tube base 14 and from which a pressure of the tip is transmitted a first channel communicating the needle tube section and the pressure transmitting part and a second channel communicating the needle tube section and the infusion supplying part. The first channel overlaps with at least a part of the second channel, and branches from a middle of the second channel.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2017,JPO&INPIT【課題】簡易な構成で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、針管部の長手方向の一端側に設けられている針管基部14と、針管基部14に設けられ、針管部へ送出する輸液が供給される輸液供給部と、針管基部14に設けられ、先端部の圧力が伝達される圧力伝達部と、針管部と圧力伝達部とを連通する第1流路と、針管部と輸液供給部とを連通する第2流路と、を備える。第1流路は、第2流路の少なくとも一部と重複しており、該第2流路の途中から分岐している。【選択図】図5
