Hallowell EMC: Hallowell Engineering & Manufacturing Corporation


Part Description: 000A5769 - Model 2002 PRO Anesthesia Ventilator with Adjustable I:E Ratio 0-300 ml version includes bellows, housing, and adapter

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New Features in ALL 2002PRO Ventilators

A Low Supply Gas Alarm, now a standard on all units, would sound when the supply gas pressure falls below 35 psi, 2.4bar and stops around 42 psi. The normal supply gas operating pressure is 50psi or 3.5bar. It is not until 35psi or 2.4bar that the ventilators delivered volume will begin to drop off proportionally with the warining supply pressure.

The Model 2002 became our best-selling ventilator with the addition of a fine volume control valve. Now with the Model 2002PRO we have simplified the Model 2002 with the replacement of the two volume control valve knobs to one volume control valve knob which has the functionality of both.

The single valve turns a total of nine and a half times; the first two and a half turns utilizing the slight, minute changes for pediatric animal patients, and the remainder of the rotations for use with the adult and extra large bellows and housings. In addition, we have added the previously optional Low Oxygen Pressure Alarm to the list of standard features.

All other parts and accessories for the Model 2002PRO have remained the same.

The Hallowell EMC Model 2002PRO is electronically controlled, time-cycled, pressure limited ventilator.

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

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

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

Adjustable  I:E Ratio 

Available on all models of the 2002 and 2000 is the option of having an adjustable I:E Ratio control.  Normally, without this option,  the I:E Ratio is fixed at 1:2, that is, 1/3 of the period of each breath is inspiration and 2/3 of each breath is exhalation.  Regardless of the respiratory rate, the animal patient will always have 2/3 of the cycle to exhale.  This fixed I:E ratio can be fixed at a value other than 1:2 at no extra charge.

The adjustable range is from 1:1.5 to 1:4.  The pros and cons are that this option affords the operator more flexibility in dealing with animals that have compromised lung function.  But during anesthesia most animal patients are lung healthy and the addition of this control can add to the complexity of setting the ventilator.  For example consider that you have a hypocapnic animal patient.  To bring that animal patients' CO2 level to a more normal range you must decrease the overall gas exchange, the Minute Volume (MV).  Without this option, only one knob controls the MV, that is the Volume control.  With this option; however, increasing the I:E ratio would also cause a reduction in MV.

Also available the Model 2002PRO
 
Operating Manual Mounting Options Related Parts

Ventilator Basics

Hallowell EMC
239 West Street
Pittsfield, MA 01201
413-445-4263
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