Datex-Ohmeda Aespire 7900, User'S Reference Manual

Page: 102 / 118

Aespire 7900
6-16
1009-0633-000
Breathing system specifications
General
Inspiratory
Expiratory
Figure 6-3 • Breathing System Resistance: 1 = Pressure drop (cm H
2
O) vs. 2
= Flowrate (L/min)
Pressure required to open inspiratory or expiratory valves: Dry: 0.49 cm H
2
O;
Moist: 0.91 cm H
2
O
VVV Vooo olllluuu um m m meeee 4600 mL including bellows
AA A Abbb bssssooo orrrrbbb beeeennn ntttt 950 mL canister
C C C Cooo onnn nnnn neeeeccccttttiiiiooo onnn nssss Auxiliary Common Gas Outlet: ISO 5356 type
connector on the front of the system (Standard 22
mm OD or 15 mm ID conical friction fit connectors)
S S S Syyyysssstttteeeem m m m lllleeeeaaa akkkkaaa aggggeeee These values are for continuous pressure and are
higher than those expected during mechanical
ventilation.
≤ 300 mL/min total at 3 kPa (0.4 psi); ≤ 75 ml/min
for all connectors and two part tubes and ≤ 225 mL/
min for all other breathing system assemblies
S S S Syyyysssstttteeeem m m m ccccooo om m m mppp plllliiiiaaa annn ncccceeee Volume of gas lost due to internal compliance (bag
mode only) 1.82 mL/cm H
2
O
B B
B Brrrreeeeaaa atttthhh hiiiinnn ngggg ssssyyyysssstttteeeem
m
m m
rrrreee
essssiiiissssttttaaa annn ncccceeee ((((iiiinnn n bbb baaa agggg m
m
m mooo oddd deeee))))
Y piece or T piece adds ≤ 0.15 kPa (.02 psi) expiratory
resistance at 1 L/sec.
To maintain compliance with standards, choose a
patient circuit with low resistance to flow.
0 20 40 60 80
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
11
1 1
22
2 2