SAR
830 Series
Volume Cycled Pressure Ventilator
The SAR-830 is a volume-cycled, positive-pressure
ventilator. The standard model is suitable for use with
rodents and similar size animals. A special version (Option
041) is set up particularly for mice and similar very small
animals. To produce tidal volumes, a constant airflow is
gated into the animal during inspiration. This FLOW RATE
multiplied by the INSPIRATORY TIME gives the tidal volume.
RESPIRATORY RATE is set independently, and shown on a digital
meter. This approach provides extraordinary flexibility
— a wide range of volumes, breaths-per-minute, and
I/E ratios are possible with no hardware changes, and using
just three front-panel controls. The quiet internal solenoid
valves and air pump (Model SAR-830/A) are the only moving
parts, which contribute to the long service life and excellent
reliability of these units.
Operation
Setting up and operating the
SAR-830 is easy. First, select an appropriate respiratory
rate for the animal, and dial it in using the rate meter.
Next, determine a tidal volume. Finally, select a flow rate
and inspiratory time to deliver that volume. Tidal volume
vs. weight tables are provided to help in the selection
of suitable parameters. Sighs can be produced manually at
any time, and a HOLD switch temporarily suspends inspiration.
Expandability
All SAR-830 series ventilators
are easily expandable to ventilate larger animals, or several
small animals simultaneously. This is accomplished using
external valve assemblies plugged into an expansion connector
on the rear panel. Each valve assembly requires a metered
flow source. The external valves operate synchronously with
the internal valves, but tidal volumes are independently
set by varying the flow rate to each valve assembly.
SAR-830 series ventilators are compatible
with oxygen and anesthesia. A source of low-pressure air
is required for operation, except for models with an “A”
suffix, which have internal air pumps. Anesthesia systems
and a full range of accessories are also available.
All models feature switchable 120/240VAC
operation.
Specifications:
Models SAR-830, SAR-830/A
SAR 830/A/P/AP Volume-Cycled Positive Pressure Ventilator
Model SAR-830/P
Small Animal Ventilator can operate as either a volume
or pressure-cycled ventilator. It is suitable for use
with laboratory animals in the mouse to Guinea pig range
of body weights. Tidal volumes are generated by gating
a known airflow into the lungs for a set inspiratory
time. Only three controls — RESPIRATORY RATE, INSPIRATORY
TIME, and FLOW RATE are necessary to produce tidal volumes
and respiratory rates over a wide range.
- Dependable,
all-electronic small animal ventilators
- Wide tidal
volume and rate range
- Mice to Guinea
pig size
- Expandable
to larger animals
- Economical
multiple-animal setups
- Safe with
oxygen and anesthesia
Operation
VOLUME MODE operation is identical to that of the SAR-830
ventilator, but the SAR-830/P can also operate in PRESSURE
mode. A built-in solid-state transducer monitors airway
pressure. The operator simply dials in the desired end-inspiratory
pressure. During inspiration, airflow is introduced into
the lungs until this pressure is reached, at which point
inspiration is terminated. This mode is especially useful
for very small animals, where hyperinflation of the lungs
can be a problem.
An output voltage corresponding
to airway pressure is provided for external monitoring or
recording. PRESSURE or VOLUME mode is selected with a single
switch. The SAR-830/P requires a pressurized air or gas
source for operation. This can be any suitable breathing
gas within the required pressure range, or the output from
an anesthesia machine.
The ventilator is also available
with an internal air pump (Model SAR-830/AP) for completely
self-contained operation. All models are compatible with
inhalation anesthetics and oxygen. Complete anesthesia setups
also available.
Specifications:
Models SAR-830/P, SAR-830/A
Respiratory
rate range
Respiratory rate range
Tidal Volume range (NOTE 1)
Inspiration time range
Pressure control range
Analog rate output voltage
Analog pressure output voltage
Logic Sync Out voltage
Power requirements
Input pressure range (NOTE 2)
Dimensions
|
5
- 200 breaths/min
0.2 - 35ml
0 - 5.00 seconds
100 - 1000 ml/minute
0 - 50.0 cmH2O
10mV/breath/min
50mV/cmH2O
5V (TTL)
120/240VAC, selectable
3-20 psi
9Wx5.5Hx9D in (23x14x23 cm)
|
NOTE 1: Using internal
valves. External valve assemblies available for
larger animals.
NOTE 2: No pressure source required for model SAR-830/A.
Expandability
These units can easily be expanded to ventilate larger animals, or multiple
small animals simultaneously by adding external valve assemblies. A metered
flow source is required for each external valve assembly. These valves
are available for animals ranging from mice to large dogs in size. Please
refer to the accessories list for details.
SAR-830 Series Ordering Information
SAR-830 Small Animal Ventilator,
without air pump, 120/240V 50/60Hz
SAR-830/A Small Animal Ventilator, with
internal air pump
SAR-830/P Small Animal Ventilator, Volume/Pressure-cycled,
without air pump
SAR-830/AP Small Animal Ventilator, Volume/Pressure-cycled,
with internal air pump
CTP-VA-1 External Valve Assembly, rodent
size (same as SAR-830 internal valves)
CTP-VA1.1 Miniature External Valve Assembly,
mice or smaller animals
CTP-VA-3 External Valve Assembly, rabbit,
cat, small dog size
CTP-VA-4 External Valve Assembly, dog to
goat size
MVA-4 Electrical adapter for adding up
to four external valve assemblies
EFM-1 Flowmeter/regulator with stand, specify
range: 1, 2.5, 5, 10 or 20 liters/min
EFM-4 Flowmeter/regulator manifold w/ four
flowmeters on stand, specify ranges
OPTION 022 External air pump, 0-4 liter/min
range
OPTION 023 External air pump, 8 liter/min
range
OPTION 024 External air pump, 16 liter/min
range
OPTION 031 Digital mass flowmeter, specify
range: 1, 10, 20 liter/min
OPTION 0311 Flow regulating needle valve
for 12-10040
OPTION 041 Special smaller internal components
and tubing set for body weight 10-100g
OPTION 043 Special larger internal components
and tubing set for body weight 500-5kg
