Volume / Pressure cycled ventilator with internal air pump
- Dependable, all-electronic ventilator
- Pressure or volume-cycled operation
- Wide tidal volume and rate range
- Mice to Guinea pig size
- Expandable to 5 animals
- Safe with oxygen and anesthesia
- Respiratory rate range: 5 - 200 breaths/min
- Tidal Volume range (NOTE 1): 0.2 - 35ml
- Inspiration time range: 0 - 5.00 seconds
- Inspiratory flow range (NOTE 2): 100 - 1000 ml/minute
- Pressure control range: 0 - 50.0 cmH2O
- Analog rate output voltage: 10mV/breath/min
- Analog pressure output voltage: 50mV/cmH2O
- Logic Sync Out voltage: 5V (TTL)
- Remote-control inputs: two TTL logic inputs
- Power requirements: 120/240VAC, selectable
- Dimensions: 9Wx5.5Hx9D in (23x14x23 cm)
NOTE 1 Using internal valves External valve assemblies available for larger animals provide up to 100ml volumes.
NOTE 2 Rat - Guinea pig Mouse Kit provides special low range flowmeter and mouse-compatible tubing set.
To set up the SAR-830/AP, you first need to know the desired Tidal Volume (VT) and Respiratory Rate (RR). These can be determined from literature references, or from the charts at the back of our instruction manuals. Besides VT and RR, the other parameter you need is the Inspiration:Expiration Ratio, or IE. For rodents, this is often set as 40% (0.40), which allows for a slightly longer expiration phase. With these basic numbers in hand, the equations below will give the needed SAR-830/AP settings.
First, determine Inspiratory Time (TI) in seconds:
TI = (IE X 60) / RR
Then, determine inspiratory Flow Rate in ml/min:
FLOW = (VT X 60) / TI
Note that VT is in ml, RR is in breaths/minute, TI is in seconds, and FLOW is in ml/minute. The equations account for the seconds & minutes automatically.
Here is an example for a 300g rat:
RR = 55 breaths/minute, VT = 2.5ml, and IE = 40% (0.40)
TI = (0.4 X 60) / 55 = 0.436s, and
FLOW = (2.5 X 60) / 0.436 = 344ml/min
On the SAR-830/AP ventilator, you would then dial in the RR directly using the RATE dial and the digital display. Adjust the flowmeter to the FLOW setting, and the INSP TIME dial for the TI setting. To adjust VT up or down from these settings, it is most convenient to simply increase or decrease the FLOW, while leaving the timing settings as is.
The SAR-830/AP's legendary reliability rests on simple principles of operation and robust construction. 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. Our SAR-830/AP has the additional feature of pressure-cycling, where the lungs are always inflated to a set pressure on each inspiration. Compatible with Isoflurane Anesthesia systems.
EFM-1 Flowmeter/regulator with stand
Flowmeter/regulator, specify range: 100 ml, 1, 2.5, 5, 10 or 20 liters/min
EFM-4 Flowmeter/regulator manifold
4 Flowmeter/regulator manifold, four flowmeters, specify range.
LP-REG Low-pressure in-line regulator for use with SAR-830 series ventilators
Low-pressure in-line regulator for use with SAR-830 series ventilators, allows long, constant lung pressure inflations for imaging applications
For SAR-830/AP Ventilator: Includes External 100cc/min flow meter with stand, and low-volume tubing set for mouse (body weight 10g - 100g)
MVA-4 Multivalve electrical adapter
Multivalve electrical adapter for adding up to 4 CTP-VA-1 External Valve Assemblies per ventilator.
Remote Control Manual Switch
HOLD / MANUAL switch for SAR-830/AP or SAR-1000 (please specify).
Replacement Mouse Tubing Set
Replacement tubing set for SAR-830/AP and SAR-1000 Ventilators, mice.
Replacement Rat Tubing Set
Replacement tubing set for SAR-830/AP and SAR-1000 Ventilators, rats.
Replacement Solenoid Valve set for SAR-830/AP Ventilator; includes 2 valves w/ fittings
Test Balloon Large
Latex Test Balloon, large, rabbit size, approx.volume 20ml (pack of 5)
Test Balloon Small
Latex test Balloon, small, rat, approximate volume 5ml (pack of 5)
Test Balloon Tiny
Latex Test Balloon, extra-small, mouse, approx.volume 1cc (pack of 5)
TRACH-1 Mouse Endotracheal tube, pack of 5
Endotracheal tube, flexible Teflon with Luer connector (mouse), 20 gauge, pack of 5
TRACH-2 Rat Endotracheal tube, pack of 5
Endotracheal tube, flexible Teflon with Luer connector (rat), 14 gauge, pack of 5
VA-CABLE Replacement Valve Assembly Cable
Replacement Cable for CTP-VA-1 or CTP-VA-3 valve assemblies. 9' long.