Össur DIRECT SOCKET TT Instrucciones De Uso página 13

resistance is as low as possible. If necessary, lower resistance by
releasing air from the Icecast Bladder.
43. Use pump and inflate to predetermined pressure level (Fig. 27).
Direct Socket
pressure casting
mmHg
44. Disconnect Icecast Pump. Ask the patient to relax the quadriceps
muscle to create normal knee flexion. Add support.
45. Wait 10 minutes for the resin to cure.
Finishing
46. Reconnect and use Icecast Pump to deflate Icecast Bladder. Roll off
Icecast Bladder (Fig. 28).
47. Remove tape and pull off outer Silicone Insulation Sheet, followed by
O-Rings and Taping Ring.
48. Unscrew Distal Attachment Nut.
49. Unscrew Injection Valve from Distal Connector. Unscrew Distal
Attachment Pin from Casting Liner.
50. Remove the Air Escape Tube at the proximal end from between the
two layers of silicon sheathing.
51. Mark the trimline on the finished socket and remove (Fig. 29).
52. Pull off Silicone Insulation Sheet and remove the Silicone Insulation
Cap from inside the socket.
53. Avoid edema during finishing by making sure residual limb is
supported in full extension.
54. Use a jigsaw to cut along the trimline and shape proximal end of
socket (Fig. 30).
55. Insert lanyard again into Casting Liner, for easy donning of socket.
Don the socket and test the trimline on the residuum with the Casting
Liner. Find the tendon on the back of the knee. Make a relief to obtain
90° flexion (Fig. 31).
56. Grind the edges (Fig. 32).
57. Sand down with wet sandpaper (Fig. 33).
58. Clean the socket. Cover the socket edges with Trimline Strip (Fig. 34).
Fitting the Direct Socket
Functioning of the Direct Socket depends on the fit of the whole
interface. To achieve comfort, control and suspension, a socket needs to
fulfill basic requirements. Don and doff the socket according to selected
liner and suspension, as described in respective instructions for use
(IFU). Follow the checklist to control the fit of the Direct Socket:
• The user can securely don the Direct Socket, with or without
assistance.
• Liner and inner wall of socket maintain full contact.
• No air pockets develop when user loads the prosthesis.
• Proximal fit is good.
• No pistoning in the socket.
• Visible movement is minimal when pulling on prosthesis.
• Rotational stability is good.
• Full movement is achieved without compromising the distal vacuum.
Don and doff the socket according to selected liner and suspension, and
their respective IFUs.
New amputee
40 – 50
Fleshy Muscular
60 70
Bony
80
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