Otto Bock 7E7 - Handling; Pelvic socket fabrication; Preparatory work; Reinforcement of the pelvic socket and lamination plate

14 | Ottobock 7E7
3. Handling
3.1 Pelvic socket fabrication
CAUTION
Risk of falling due to incorrect lamination of the lamination plate. Proper lamination tech-
nique is necessary to guarantee stability and comfort for the user. It is particularly important
that the lamination plate is sufciently reinforced with carbon-bre cloth and breglass matting.
CAUTION
Risk of health impairment when processing breglass. Fibreglass can irritate the eyes,
respiratory tract and skin. Where appropriate, use a particle lter mask or exhaust equipment.
3.1.1 Preparatory work
• Drill three evacuation ducts into the plaster positive to ensure intimate t.
• Align the lamination plate on the plaster positive, shorten as necessary and round the edges.
• If there is large tissue loss on the residual limb, or in case of hemipelvectomy, rst restore sym-
metry by using Pedilen® rigid foam.
• Pull over the form-weld inner bag and evacuate.
• Manufacture the external bag with pouring hole located on the side of the residual limb.
• Cut off the lling hoses for the hard/soft lamination technique.
3.1.2 Reinforcement of the pelvic socket and lamination plate
The following reinforcement material shall be used depending on the type of loading expected:
• 623T3 Perlon Stockinette (10-12 layers)
• 616G12 Carbon Fibre Cloth (2 - 4 layers)
• 616G4 Fibreglass Mat (2 layers)
The following working steps are necessary:
• Cut a length of Perlon stockinette twice as long as the plaster positive, pull over the plaster
positive, twist on the non-amputated side and reect.
• Pull over 2 other Perlon layers.
• Reinforce the socket in the seat area with carbon bre cloth and breglass mat.
• Close the threaded holes in the lamination plate with 636K8 Plastaband.
• Interweave 699B1 Fibreglass Roving through the lamination plate holes.
• Align the lamination plate to the marking on the plaster positive and apply breglass mat and
carbon bre cloth.
• Complete the reinforcement with Perlon stockinette while inserting the lling hoses, Trolene
separation ap and threaded plates.
• Pull the external bag over the reinforced plaster positive and thread the lling hoses through
the pouring hole.