Simple Limb Iniative 30 at-pack prosthetic leg
$
Childerns 6-8yrs Transfemoral Prosthesis Team 4
Page 1
CAPAS
(Layers)
at-pack leg for colombia
Hardware: Post screws- 1.5in/1/4in Post screws - 2inx1/4in 3D printed parts: Mid link support Side link Mid link Heel HDPE/LDPE Sheets 12inx12in sheet of LDPE 1/4in 12x12in sheet of LDPE 3/8in-1/2in sheet of HDPE (socket) 12.5x13in 1/8in Lin LDFF PU 12x18in 1/16
Price: 3 $ 0.76 (2 pieces) (bulk of 25qnt) $ 95 (12 pieces) (bulk of 25qnt)
0.23 ($.05/gx4.50g) $ .30 x2= $.60 ($.05/gx5.82g) $ .32x2= .$64 ($.05/gx 6.51g) $ .97 ($.05/gx 19.48g) $
7 1019 (not including left of over material from cut)
$ 89 (not including left of over material from cut) $
3
$ 25 (12x24in 1/8 = $5.26=188sq/ft) (needed 162.5sq/ft x .02sq/ft = 3.25)
1
$ 18 (Byulk of 10 sheets 8.42)
Total: $2963 Note* LDPE Is a moisture resistant and easy to form plastic. LDPE is used for tanks, laboratory and any other products that come in contact with mositure.
Made in efforts to provide a low cost prosthetic to Mahavir Kamina: Colombia Team 4
Page 2
Materials
hardware, parts & quantity
H3 H1 H2 (x14) (x14) (x14) #1
K2(X2)K1(X2) I X2) I X2)
A. outside pylon B. inside pylon C. inside knee D. outside knee E. outside foot F. inside foot G. removable heel (3D printed)
I. foot grips
#4 (x2)
J (X2)
J. side fairing K. front fairing
#3 (X2)
C (X2)
E (X2)
D (X2)
F (X2)
A (X2)
G (X2)
H1. post screw (1/4x1.5in) H2. post screw head H3. post screw (1/4x2in) #1. mid knee/link support
(3D printed)
#2. mid link (3D printed)
#3. side link (3D printed)
Laser cut parts = LDPE | 3D Printed parts = ABS |hardware = aluminum Team 4
B (X2)
Page 3
ASSEMBLY 1 pylon and knee combo
#4 (X2)
A B
H1 (X3)
B
H2
#3 (X2)
#5 (X1)
H1 (X4)
A #1
Pylon (tibia) and knee linkage Team 4
Page 4
ASSEMBLY 2 pylon and knee combo
A
)
D
C
Pylon (tibia) and knee combination structure Team 4
Page 5
ASSEMBLY 3 pylon and foot combo
Pylon (tibia), Knee/foot & foot-heel combo structure Team 4
Page 5
ASSEMBLY 4 customizable fairings
J
J
K2
K1
Pylon (tibia) and knee combination structure Team 4
Page Page 56
ASSEMBLY 5 full assembly
J
Full exploded view w/socket installation Team 4
Page Page 56
ASSEMBLY 5 socket production
HDPE Sheets 12.5inx8.5in1/8in
Polyurathane Sheets 12inx8in
Step one: plaster bandages Step two: negative mold Step three: pour plaster onto the mold (positive mold) Step four: Pre heat HDPE sheet and “wrap around the mold onto a cone shape Step five: cut out excess material and use pre-assembled knee to shape the ends fo the material. Steop six: Drill mounting holes to knee as needed.
Socket production continues the tradtional plaster molding, but ďŹ nishes with a wrap instead of a stretch method. Team 4
Page Page 56
ASSEMBLY 6
(optional)
hand fabriction and assembly
2.72
1.66
3.01
1.25
R.25
3.62
R.25 R.55 R.38
3.25
.93
3.38
.23
.93 1.22 R.37 R.30
.23
3.01
.13
9.10
9.53
.23 1.50
2.61 1.50
1.00
R1.50
.25 .75
2.00
1.80
7.29
R.73
.68
1.50
1.74 1.00
7.92
2.00
.23 1.50
1.33
.50
.23
.23
.10 1.96
3.23 7.33
optional assembly included a full pdf ďŹ le to laser cut print, or layouts for hand fabrication Team 4
Page 6