Patent ID: 8740804

Claim:
A method of manufacturing a cuff including: providing a cuff member configured to be attached to and detached from a blood pressure measurement portion, laying an occluding air bag inside the cuff member such that the occluding air bag compresses the whole blood pressure measurement portion, laying a sub air bag on the occluding air bag and forming the sub air bag with a width which is shorter than a width of the occluding air bag in order to compress a side of the blood pressure measurement portion which is close to a heart, and laying a pulse wave detection air bag on the occluding air bag, such that the pulse wave detection air bag compresses a downstream side of a blood vessel in the blood pressure measurement portion, and detects a pulse wave generated by a heart beat generated downstream of the cuff, inserting a rod shape member which elastically deforms to be entirely foldable in a communicating portion between the sub air bag and the occluding air bag, thereby allowing the occluding air bag and the sub air bag to communicate with each other even when the sub air bag is folded into the occluding air bag at 180 degrees while folding the rod shape member at the same time, providing the occluding air bag and the sub air bag such that, when the occluding air bag and the sub air bag are pressurized after being attached to an upper arm, the occluding air bag laid inside the cuff member is expanded after the sub air bag is expanded, preparing the sub air bag and the occluding air bag as an integrally molded closed bag such that, when one of the sub air bag or the occluding air bag is folded into the other air bag, the rod shape member is also folded at the same time, and providing an interrupting device between the sub air bag and the occluding air bag.