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RapidFit™ Standard Adapter
Kit For Transtibial and Transfemoral Thermoplastic
Sockets
(RapidFit # 1030)
Swanson Regional Orthotic & Prosthetic Research Center has developed
the
RapidFit Method to improve patient care for lower
limb amputees.
RapidFit
Overview
For a printable version in
Microsoft Word select here
Before you begin: Read
directions completely
RapidFit # 1030
has undercuts and is not removable
Materials Needed: Lock, RapidFit™
Thermoplastic Standard Adapter # 1030 and Mold Sealer
Tools needed: 5mm Hex Key, 6mm
Hex Key, Cast Saw
Plaster Model
Preparation
- Take the cast over the
cushioned liner or cast sock.
- Fill the cast with plaster
keeping the pipe 2" from the bottom of the
cast. Modify the plaster model.
- Seal the plaster model using
an appropriate mold sealer.
- Apply a non-stick nylon
stockinette to the plaster model for a vacuum air
wick.
- Paint the distal end of the
plaster model with mold sealer. This will glue
down the nylon for trimming. Let dry and trim the
nylon.
- If not attached, install the
Center Hole Sleeve insert with o-ring to the
bottom of the RapidFit Standard Adapter center
threated hole. Tighten with pin tool. Attach the
four-hole fabrication spacer block (white) to the
bottom of the RapidFit Lock Adapter with the four
6 mm socket head cap screws (black). Tighten the
four screws to the spacer block with a 6mm hex
key.
- If not attached, install the
seven 5 mm hex socket set screws in the RapidFit
Adapter. The set screws should protrude 3/16"
for 3/16" plastic or ¼" for ¼"
plastic to the mark the location for easy removal.
Adjust/Tighten with a 5 mm hex key.
- Option A: Fasten the
distal end Contour Foam or Block Foam to the top
of the RapidFit Standard Adapter using double
stick tape. Align or bench align the components.
The Prosthetist should check the RapidFit position
for correct alignment. Nail the Contour Foam to
the plaster model to fasten the RapidFit Adapter.
Vacuum form the test socket using the blister or
drape methods.
- Option B: If using the
RapidFit Align-Right system, place the hole in the
Block Foam on the top of the Standard Adapter and
insert the Align-Right bolt through the bottom
center hole and through the Block Foam. Attach the
bolt to the plastic anchor in the plaster mold and
align or bench align the adapter. The Prosthetist
should check the RapidFit Standard Adapter
position for correct alignment and rotation.
Vacuum form the test socket using the blister or
drape methods.
Trimming
- Let the
thermoplastic socket cool down. If using the
RapidFit Align-Right system, sand off any plastic
on top of the Align-Right attachment bolt and
remove the bolt with a hex key.
- Trim out the four-hole spacer
block. Remove the four 6 mm socket head cap screws
with a 6mm hex key. Remove the four-hole spacer
block.
- Trim out and remove the
thermoplastic socket from the plaster model. Sand
and buff the trim lines.
- Sand off the plastic on top
of the eight 5 mm hex socket set screws and remove
screws with a 5 mm hex key.
Assembly
- Install and
tighten the eight 5 mm socket head cap head screws
and stainless steel washers to secure the
attachment of the RapidFit Lock Adapter to the
test socket. Tighten with a 5 mm hex key to a
torque setting of 12 Nm or 9 foot pounds. Caution,
care must be taken to use the correct length
socket head cap screws provided with RapidFit
Adapter so that the screws tighten properly and
securely. Do not substitute these socket head cap
screws.
- Remove the center hole sleeve
insert with through hole and O-ring to the bottom
of the RapidFit Adapter center threated hole using
the pin tool. Install the RapidFit Threated Plug
insert or other accessory insert to the to the
bottom of the RapidFit Adapter center threaded
hole. Tighten with pin tool.
Suction Option: Use the RapidFit Suction
Kit to provide an air-expulsion feature to your
socket.
- Install the other
endoskeletal components according to
manufacturer's directions. NOTE: A set of four 6
mm x 16 mm stainless steel flat head socket screws
are provided with the RapidFit Adapter. Caution,
care must be taken to use the correct length flat
head screws provided with the Rapidfit Adapter so
that the screws tighten properly and securely. Do
not substitute these flat head screws. Apply
thread lock such as Loctite 242 to the four 6mm x
16 mm stainless steel flat head socket screws and
tighten to a torque setting of 12 Nm or 9 foot
pounds.
Filling the Thermoplastic
Socket with plaster
- Tape over the
distal Block Foam or Contour Foam on the inside of
the socket with masking tape in order to prevent
the plaster from leaking underneath.
Transfemoral RapidFit Socket
Lamination
- You
will need RapidFit Standard Adapter #1040 for
Laminated Sockets. Follow the RapidFit Standard
Adapter Lamination directions.
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