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Verfügbare Sprachen
Verfügbare Sprachen
After proper adjustment and attachment of speech
valve unit and HME cassette, the completed Provox
FreeHands HME
Adhesive base plate or Provox
(The latter is not included in the package.) Accessories
included with the Provox
• five disposable Provox
settes
• two Provox
• a safety screwdriver for the adjustment of the cough-
relief valve
• a plastic forceps for replacement of the speech valve
membrane
• two extra speech valve membranes: "light" (white
dot) and "strong" (green dot). The "medium" mem-
brane (blue dot) is already mounted in the valve.
• a plastic cleaning and storage box for the reusable
valve unit
• one package of Skin-Prep
• Instructions for Use
How.does.the.Provox
The speech valve unit allows hands-free tracheostoma
occlusion for voice prosthesis users.
The speech valve closes as exhalation pressure is
increased briefly, just as it increases when one starts
to talk loudly in normal laryngeal speech. If the ex-
halation pressure does not increase rapidly, the valve
stays open and allows normal breathing.
Once the valve is closed, a small magnet holds it
in the closed position. There is no need to maintain
high air pressure in the trachea/windpipe in order to
keep the valve closed.
When the pressure in the trachea/windpipe drops to
a very low level, or during inhalation, the valve opens
and allows free breathing again.
There are two valve positions, which can be ad-
justed by simple rotation of the valve housing. The
"speaking position" (On) allows the automatic change
between stoma closure and normal breathing as de-
scribed above. The "breathing position" (Off) allows
a higher airflow without closing the valve. This is
also achieved by the use of two magnets, which keep
the valve open despite the increased airflow during
physical activity.
The cough-relief valve helps reduce the risk of
trauma to the airways, which might occur due to
sudden pressure increases while coughing. The cough-
relief valve also helps to diminish the pressure on the
Adhesive and, thus, premature loosening of the airtight
stoma seal. The pressure (cough intensity) needed to
GE NE R AL
is inserted into either Provox
®
XtraBase
Adhesives base plates
®
®
FreeHands.HME
®
.
LaryTube with ring.
®
FreeHands HME
®
FreeHands HME
®
wipes
™
.
work?
®
®
®
are:
®
Cas-
®
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