COULTHARD, RICHARD DANIEL JOHN,ROBINSON, TIMOTHY MARK,LOCKE, CHRISTOPHER BRIAN
申请号：
ES10188480
公开号：
ES2466352T3
申请日:
2009.05.01
申请国别(地区):
ES
年份:
2014
代理人:
摘要：
A reduced pressure treatment apparatus comprising: a piston chamber, which has a closed end； a piston (231), disposed within the piston chamber and which is movable between an extended position and a compressed position； a loading chamber (355), arranged between the piston and the closed end, such that the loading chamber has a first volume when the piston is in the compressed position and a second volume when the piston is in the extended position , such that the first volume is smaller than the second volume； a loading member (243), intended to force, or load, the piston (231) into the extended position； a valve member (235), intended to allow fluid to flow out of the loading chamber (355) as the piston (231) moves to the compressed position, and to prevent fluid from entering the loading chamber (355) as the piston (231) moves towards the extended position； characterized by a regulated chamber (359)； a passage (275) through the piston, to allow fluid communication between the regulated chamber (359) and the loading chamber (355)； and a regulating member, intended to regulate fluid communication through the passage (275), between the loading chamber (355) and the regulated chamber (359), such that the regulating member comprises a regulating spring (307) , a valve seat (279), arranged adjacent to the passage, and a valve body (303), capable of engaging the valve seat (279) in order to substantially reduce fluid communication through the passage (275) ； such that the regulating member closes the passage to prevent fluid communication through the passage (275) when the pressure inside the regulated chamber (359) is less than or equal to a desired therapy pressure, and the regulating member opens step (275) to allow fluid communication through step (275) when the pressure inside the regulated chamber (359) is greater than the desired therapy pressure.Un aparato de tratamiento de presión reducida que comprende: una cámara de pistón, que tiene un extremo cerrado； un pi
