A radial artery blood pressure waveform measuring device includes a stress sensor, a stress concentration elastic structure, a stress guiding elastic member, and an elastic band. The stress sensor contacts the skin surface of a wrist corresponding to the position of the radial artery. The stress concentration elastic structure is disposed on the stress sensor. The stress guiding elastic member has a top surface, a bottom surface, and at least one side surface, in which the bottom surface is disposed on the stress concentration elastic structure, and the area of the bottom surface is larger than the area of the horizontal section of the stress concentration elastic structure. The elastic band surrounds the stress guiding elastic member and the wrist and applies a contractile force on the wrist, the top surface, and the side surface.一種橈動脈之血壓波形量測裝置,包含壓力感應器、應力集中彈性結構、應力引導彈性件以及彈性帶。壓力感應器用以接觸手腕之對應於橈動脈位置的皮膚表面。應力集中彈性結構設置於壓力感應器上。應力引導彈性件具有頂面、底面與至少一側面,其中底面設置於應力集中彈性結構上,且底面之面積大於應力集中彈性結構之水平截面積。彈性帶用以環繞應力引導彈性件與手腕,並施加收縮力於手腕、頂面與側面上。100‧‧‧橈動脈之血壓波形量測裝置110‧‧‧壓力感應器112‧‧‧感應器本體114‧‧‧墊片120‧‧‧應力集中彈性結構122‧‧‧應力施加層124‧‧‧緩衝層126‧‧‧應力承接層130‧‧‧應力引導彈性件132‧‧‧頂面134‧‧‧底面136‧‧‧側面140‧‧‧彈性帶150‧‧‧應力緩衝彈性件200‧‧‧手腕210‧‧‧皮膚表面
