AIR SAC FOR SPHYGMOMANOMETER DEVICE AND METHOD FOR PRODUCING SAME

摘要

This air sac (1) for a sphygmomanometer device according to one embodiment of the present invention has a cuff fixed to the upper arm, wherein the air sac (1) is provided with main sheet members (2a, 2b) that spread in two layers in the length direction and width direction in which a sac body is formed, constricted parts (4) where the dimensions of an air chamber are locally confined in the width direction are provided in the length direction of the sac body, a pair of secondary sheet members (5) occupying at least a region that includes places equivalent to the constricted parts (4) are arranged in correspondence with the inside or outside of each of the layers of the two layers of the main sheet members (2a, 2b), and the pair of secondary sheet members (5) are welded to the corresponding layer of the main sheet members (2a, 2b) at places equivalent to the constricted parts (4) and are welded to the corresponding layer (2a or 2b) at a near-middle part (5w) separated from the constricted parts (4) toward the middle in relation to the width direction.