A cuff (130) for the sphygmomanometer has a bag-shaped cover body provided with an air bag and a curler as a curved elasticity board. The bag-shaped cover body is formed by overlapping an inside cover member (141) located on a living body side in installed condition and an outside cover member (142) located on the opposite side of the living body side in installed condition and suturing the peripheral edge of them. The curler included within the bag-shaped cover body contains a part with high curvature and a part with low curvature in the direction of wrapping as fitting non-measurement part, and a part of the inside cover member (141) corresponding to the part with high curvature of the curler is pulled in the direction of width without expanding the air bag. As the composition described above, the cuff for the sphygmomanometer can be made wherein the wrinkle is generated hard in the bag-shaped cover body.血壓計用腕帶(130)係具備內包有空氣袋及作為彎曲彈性板的扣環之袋狀蓋體。袋狀蓋體係藉由將於穿戴狀態中是位在身體側的內側蓋構件(141)、與在穿戴狀態中是位在身體側相反側之外側蓋構件(142)重疊並將其周緣縫合而形成。被內包於袋狀蓋體的扣環係包含在其捲繞方向之曲率大的部位和曲率小的部位而得以服貼於非測定部位,而與扣環之曲率大的部位對應的部分之內側蓋構件(141)係形成在空氣袋未膨脹的狀態中會在其寬度方向被拉扯的狀態。藉由如此的構成,可作成在袋狀蓋體上不易產生皺折的血壓計用腕帶。100A‧‧‧血壓計110‧‧‧本體130‧‧‧血壓計用腕帶141‧‧‧內側蓋構件142‧‧‧外側蓋構件142a‧‧‧折返部165‧‧‧面扣件
