PROBLEM TO BE SOLVED: To provide a pressure measuring device which can measure the pressure of the fluid in a lumen while suppressing increase of cost.SOLUTION: A pressure measuring device 110 has a flexible guide wire 30 which can be inserted into a lumen of a living body. The pressure measuring device 110 has a supporting body 114 in the guide wire 30 with a recess 113. The pressure measuring device 110 has a conductive rubber member 115 fixed to the supporting member 114 and covering at least a part of the opening of the recess 113, the electric resistance value of the rubber member being changed by elastic deformation. The pressure measuring device 110 has a first electrode 121 and a second electrode 122 fixed to the supporting body 114 and electrically connected to the conductive rubber member 115.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2018,JPO&INPIT【課題】高コスト化を抑制しながら、管腔内の流体の圧力を測定できる圧力測定装置を提供すること。【解決手段】圧力測定装置１１０は、可撓性を有し、生体の管腔内に挿入可能なガイドワイヤ３０を備える。圧力測定装置１１０は、上記ガイドワイヤ３０に設けられており、凹部１１３を有する支持体１１４を備える。圧力測定装置１１０は、上記支持体１１４に対して固定され、上記凹部１１３の開口の少なくとも一部を覆い、弾性変形することにより電気抵抗値が変化する導電ゴム部材１１５を備える。圧力測定装置１１０は、上記支持体１１４に対して固定され、上記導電ゴム部材１１５と電気的に接続された第１電極１２１及び第２電極１２２と、を備える。【選択図】図８
