GE Aespire 7100 Technical Reference Manual page 46

Drive-gas flow stops and the exhalation valve opens. Ex haled gas flows from the
patient (4) , through a unidirectional valve (expiratory check valve) and into the bellows
(5). Residual drive gas (0) flows out of the bellows to the scavenging system (6).
Aespire
7100
Mechanlcal explraUon
(EZc hange and
condenser
。仔}
If PEEP is selected
,
static pressure on the pilot port ofthe exhalation valve sets the
PEEPleve l.
During exhalation , fresh gas flows backwards thrOUgh the EZchange module (阳)
into
the expiratory limb , downstream ofthe expiratory checkvalve.
For machines that are plumbed to return sample gas to the breathing system , the
returned gas (SGR) enters the breathing system after the expiratory check valve.
g
g
!:rì
AP
D
FG
SGR Sample Gas Retum
Expiratory flow
Fl
ow to bellows
e
VA
u
ca
gu
阳
部
二
m
vdgbE
WH@h
mvuvc
'
u
z
·
n
晦
ADR
4
5
6
To scavenging
08/07 Mll10140
Rgure 2-12 • Mechanical expiration with EZchange
Ca
nister and Condenser OFF
2-20