STS impression material is intended for use primarily
in moulding the foot for the purpose of making a shoe last. It may also
be used for last duplication or fabrication of orthotic devices for the
foot, ankle, and leg. Application suitability should be the responsibility
of qualified personnel.
Product characteristics:
STS impression material consists of a stretchy, tubular, fibreglass
knit impregnated with a water curable polyurethane resin. Exposure of
STS material to moisture or water initiates a chemical reaction which
causes the tubular moulding material to be- come rigid. Finished moulds
or lasts made from STS material are strong, lightweight and replicate
the limb extremely well.
Product storage:
Each roll of STS material is packed in a sealed foil pouch. Care should
be taken to avoid puncturing the pouch as this will cause the STS material
to harden prematurely in the package. STS should be stored in a cool,
dry atmosphere. Extremes of temperature and humidity should be avoided.
Each pouch should be gently squeezed prior to opening to check suitability
for application. The roll of STS material should feel soft and pliant.
Do not use material that feels hard. For optimum perform- ance, rotate
stock.
Benefits of use:
- Reduces casting time
- Cure time in less then 5 minutes
- More accurate then fiberglass rolls
- Virtually eliminates all wrinkling and provides excellent conformity
- Glass-smooth finish is ideal for CAD/CAM
- Cutting strip and Channel tube included for safe and innovative removal
- No toe contractures
- No more concerns about plaster clogging drains or getting on your
clothing, furniture or floor
- No more cast cutter
- No more staff time wasted cleaning room
- No more need for special “casting rooms”
- No more waiting until the next day to ship the cast to your central
fabrication laboratory
- No more special packing of plaster casts to prevent damage during
shipping
Application instructions:
Precautions:
The polyurethane resin in STS material will adhere firmly to unprotected
skin and to clothing. Protective latex examination or surgical gloves
should be worn while handling the material. Care should be exercised
to avoid contacting unprotected areas of the skin of the patient during
application by using a plastic bag. Swabbing lightly with alcohol may
help in removing resin from the skin if done immediately.
-
With the foot at 90° to the leg,
place cutting strip on dorsum of foot.
Fig. 1
- Tape Channel tube on top of cutting strip. Fig. 2
-
Place plastic baggie of appropriate
length on foot and leg.
Fig. 3
- Dip sock in cool water. Then gather moistened STS Sock and slip
on foot. Fig. 4
-
Completely apply the sock to foot
and leg. Stretch out any wrinkles, leave no overlapping, thoroughly
massage sock to shape of foot, ankle and leg.
Fig. 5
- Place foot in desired neutral position, (Fig. 6a) or in a
semi-weight bearing foot position (Fig. 6b).
-
Mark malleoli, 1st and 5th metatarsals
heads or boney prominences with indelible pen.
Fig. 7
- Remove channel tube. Fig. 8
-
Cut sock with scissors or letter
opener over cutting strip.
Fig. 9
- Spread cured STS sock and remove from foot and leg. Fig. 10