Patent ID: 8715198
Filing Date: 2014-05-06
Classification: A61B

Abstract:
1. A sphygmomanometer exhaust valve characterized by comprising: a movable member which functions as a lever; a ventilation port formed in a position opposing a first portion of said movable member which functions as a point of action of said movable member thereby the point of action allows for closing and opening of said ventilation port; control unit adapted to control, in accordance with external control, an amount of movement of a second portion of said movable member which functions as a point of force of said movable member thereby causing movement in said movable member; and support unit adapted to support said movable member such that a fulcrum position of said movable member does not move, and while said control unit is preventing movement of the point of force of said movable member, said control unit holds said movable member in a predetermined position where the point of action of said movable member is spaced apart from said ventilation port, wherein said support unit consists of a metal plate bended such that a longitudinal cross section shape of said support unit has a bending corner, and one end of said support unit is attached to said movable member such that said bending corner functions as the fulcrum, and the other end of said support unit is fixed to a case of the sphygmomanometer exhaust valve, and wherein said support unit itself functions as a plate spring forcing said movable member to the predetermined position.