| 摘要 |
<p>Pressure regulator (100) and medical device providing treatment using negative pressure (10), comprising such a regulator. The regulator (100) comprises a first non-regulated negative-pressure chamber (101) in communication with a vacuum source, a second, regulated, negative-pressure chamber (102) in communication with a treatment zone, and a valve (150) for placing the first and second chambers (101, 102) in controlled communication and thus for regulating the pressure in the second chamber (102). The valve comprises a valve head (151) able to move between a closed position and an open position. The regulator comprises a flexible and mobile membrane (120) partially delimiting the first chamber (101), a central part (121) of this membrane defining the valve head (151). The valve head (151) is pushed toward the open position by a compression spring (160) bearing against an intermediate part (122) of the membrane (120) which surrounds the valve head (151). The intermediate part (122) is stiffened by an insert (170).</p> |
