Animal research ventilator SAR-1000

electronicanesthesiafor small animals

Versatile and easy-to-use ventilator for mice, rats, and other small animals Presentation The SAR-1000 Small Animal Ventilator is a versatile and easy-to-use ventilator for mice, rats, and other small animals. Volume mode delivers a fixed tidal volume on each breath, and pressure mode causes inflation to stop at a preset airway pressure. In either mode, lung inflation is maintained at the end of inspiration until the percent inspiration (%Insp) time has elapsed. This end inspiratory pause (IEP) improves gas exchange and the overall efficiency of ventilation. In volume mode, the ventilator operates on the proven flow-time principle, where a known airflow is delivered for a set time, thus delivering a fixed volume. In pressure mode, airflow is simply adjusted to give a suitable inspiration time. Actual tidal volume is computed and displayed on the LCD display, as well as minute ventilation (MV) and other respiratory parameters. A built-in air pump allows completely self-contained operation. This pump draws in room air, oxygen, or anesthetic gasses through a rear-panel port. Operating principle The controls on the SAR-1000 are simple and intuitive. Respiratory rate (RR) is set directly and reads out as breaths/minute. Percent inspiration (%Insp) determines the fraction of the total cycle time devoted to inspiration. The pressure knob is used to set the desired end-inspiratory pressure (and sigh pressure setting). The inspiratory flow knob is used to set the airflow rate during inspiration. When this is adjusted, the LCD display is automatically updated to show the new flow rate and corresponding tidal volume.