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Hallowell EMC Model 2000 Anesthesia Ventilator

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The Hallowell EMC 2000 is an electronically controlled, time-cycled, pressure limited ventilator.

Electronic control— Eliminates the substantial driving gas required to operate pneumatically controlled ventilators.

Time cycled— Insures consistently spaced breaths. The possibility of stacking breaths or auto-PEEP is eliminated by keeping the I:E ratio constant at 1:2. This means that regardless of the respiratory rate setting two-thirds of the breath will remain for expiration. The respiratory rate is adjustable from 6 – 40 breaths per minute (BPM).

Volume constant — Insures that each delivered breath will have essentially the same volume, independent of changes in patient compliance and airway resistance. The deliverable tidal volume (TV) range is from approximately 20 cc to 3,000 cc.

Pressure Limited— Provides for patient safety by limiting the maximum working pressure (MWPL) to a user adjustable pressure range of 10 – 60 cm H2O.

Both the Hallowell 2000 and 2002 are equipped with dual airway pressure alarms that monitor and sound when the peak inspiratory pressure (PIP) of any breath either exceeds the preset maximum working pressure limit (MWPL) or fails to reach 6 cm H2O as in the case of a disconnect.

A Low Supply Gas Alarm, available as an option, would sound when the supply gas pressure falls below 35 psi, 2.4bar. The normal supply gas operating pressure is 50psi or 3.5bar. It is not until 35psi or 2.4bar that the ventilator delivered volume will begin to drop of proportionally with the waining supply pressure.