| 摘要 |
<p>PURPOSE:To cope with an official approval without needing especially a special tool by providing a cylindrical connecting hole with a bottom for an air system set on a hemodynamometer main body side and a plug set on a cuff belt side and inserted into the above described connecting hole to be connected with it. CONSTITUTION:When a plug 2 is inserted under a condition wherein an 0-ring 3 is fitted into a groove 22, a cuff belt is communicated with the first port 11 through a shaft hole 20 of the plug 2 and at the same time, it is under a condition communicated with the second port 12 through a gap between the inner peripheral face of a connecting hole 1 and the outer peripheral face of the plug 2. However, when under a condition wherein the 0-ring 3 taken out of the groove 22 is fitted into a groove 21 of the apex side of the plug 2, the plug 2 is inserted into the connecting hole 1, as this O-ring 3 is brought into contact with the inner face of the connecting hole 1 at a position between the first port 11 and the second port 12, only the part between the first port 11 connected with the shaft hole 20 and a pressure sensor is communicated and the second port 12 connected with a pump and exhaust vent is stopped therefrom.</p> |
