Hazardous Environment Filters; Bacterial / Viral Filter Use; Chemical /Biological Filter Use - Impact Implements Uni-Vent 731 EMV+ Series Operation Manual

HAZARDOUS ENVIRONMENT FILTERS
The EMV+ can be used in environments where chemical and/or biological toxins are present. To do this safely, all
gas delivered to the patient comes from either a pressurized medical‐grade O
entrained through the FRESH GAS/EMERGENCY AIR INTAKE. Operators can chose between a bacterial/viral filter
and a chemical/biological filter based on the direction of the Medical Control Officer.
To prevent the patient from breathing contaminated ambient air in the event of a ventilator failure, the EMV+
contains an internal anti‐asphyxia valve that allows the patient to inspire gas through the external filter. While this
design assures that no contaminated gas reaches the patient, it requires that the operator ensure that nothing
blocks the input of the external filter.
WARNING! The Medical Control Officer and/or Incident Commander should determine which if any external
filtration is used based on the potential hazard.
WARNING! The operator must assure that nothing blocks the inlet of the external filter; failure to do so could
prevent the patient from breathing and cause a ventilator failure (see Figure 4).
B /V F
ACTERIAL IRAL ILTER
Bacterial/viral filters (B/V) can be used in environments where the patient is at risk to cross contamination or
airborne pathogens (see Figure 11). When used in accordance with the manufacturer's instructions these filters
can help prevent inhalation of infectious matter. In dusty environments the B/V filters can also be used to prevent
entrainment of particulate matter that could affect the ventilators pneumatic components. To use a bacterial/viral
filter, insert the filter's male 22 mm conical fitting into the Fresh Gas/Emergency Air Intake.
CAUTION! If filters have been exposed to biological matter dispose of them following Universal Precaution
procedures for your facility.
C /B
HEMICAL IOLOGICAL
The EMV+ is designed to allow attachment of chemical/biological filter/canister (type C2A1
contaminated environments. The Fresh Gas/Emergency Air Intake fitting allows for attachment of standard Rd 40
x 1/7 threads. A complete description of this standard can be found in BS EN 148‐1:1999 Respiratory protective
devices – Threads for face pieces.
WARNING! Unit is shipped with both the pediatric/ adult and infant/pediatric single limb circuits, if the standard
circuit (820‐0067‐00) is used, a check valve (704‐0700‐01) is required when operating with a Chem/Bio filter.
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A 3M C2A1 canister (3M St. Paul, MN) was used in our validation testing to represent the class of filters generically known as C2A1 under the
NSN number 4240‐01‐361‐1319. These tests confirmed the performance of the ventilator when operating with these devices as a class. Use of
the 3M canister does not constitute endorsement or recommendation of the 3M device. Use and selection of the appropriate filter should
always be under the direction of the Incident Commander.
U
SE
F U
ILTER SE
and/or filtered ambient air
2
8
) for use in
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