background image

3.8.1 Transferring the adapter position

Objective

The transfer device is used to transfer the adapter position from the check prosthesis to the definitive prosthesis.
The check socket is then filled with plaster and adapted to the plaster model.

Required tools and materials

743A160 transfer device, oscillating saw, tape measure, 716Y3 half-round file, 716Y4 round file, 649G22=180
grit cloth

Remove all parts used for the check socket of the liner
FitKit.

INFORMATION:  If  more  than  three  parts  from  the
liner  FitKit  were  used  for  the  check  socket,  a  new
check socket should be made.

Transfer the adapter position of the check prosthesis to
the transfer device.
Fill the check socket with plaster to secure the vacuum
pipe.
Remove the plaster model from the check socket.
Prepare the plaster model for the lamination process.
Reduce the plaster model according to the parts of the
liner FitKit used:

Thick  residual  limb  sock:

  Reduce  the  circumfer­

ence by 

5 mm

Spot:

 Reduce the plaster model locally by 

2 mm

3.8.2 Vacuum forming

Objective

A layer of ThermoLyn PETG is vacuum formed over the plaster model as the inner wall of the prosthetic socket. The
ThermoLyn PETG reduces the risk of leaks in the prosthetic socket.

Required tools and materials

616T483=3 ThermoLyn PETG

Complete the vacuum forming process with ThermoLyn
PETG.
Cut off material protruding over the model with a knife.

TIP:

 Further information on vacuum forming with PETG

can be found in the 646T4=1.0 technical information.

20  |  Ottobock

Procedure

Harmony System

Summary of Contents for Harmony P3

Page 1: ...Technical information 2 1 8 Harmony system Fabricating a transtibial prosthesis using example of Harmony P3...

Page 2: ...thesis 3 6 16 Attaching the socket connector 3 6 1 16 Optional Transferring the adapter position 3 6 2 17 Selecting the functional ring 3 6 3 17 Replacing the functional ring 3 6 4 18 Dynamic trial fi...

Page 3: ...y experts It is a prerequisite that the qualified personnel are trained in the handling of the various materials machines and tools This technical information does not claim to be exhaustive Reading t...

Page 4: ...k 99B25 Plaster bandages e g 699G3 ThermoLyn soft 616T53 Bonding agent 617H46 Wax 633W8 Polyethylene adhesive tape 627B4 Perlon stockinette 623T3 Closed cell foam e g 617S70 4 PVA bag 99B81 70X19X5 99...

Page 5: ...liners Liners without pre flexion are particularly appropriate for cyl indrical residual limbs Liners with pre flexion have an anatomical shape and are appropriate for short to medi um length slightly...

Page 6: ...ive The liner fit is checked to prepare for the plaster cast Residual limb dimensions can then be measured and critical structures on the residual limb marked to facilitate modelling Required tools an...

Page 7: ...r splint is moulded by vacuum in a latex casting bag Moulding is carried out at a flexion angle of approx 85 to enable easy bending of the knee when the prosthesis is being worn Required tools and mat...

Page 8: ...tte Position the residual limb such that the flexion angle is approx 85 Switch on the vacuum pump vacuum min 500 mbar Mould the lower edge of the patella Let the plaster cure Hold the plaster splint i...

Page 9: ...d place it on the residual limb Pull a nylon stockinette over the residual limb Pull the latex casting bag over the plaster cast and seal proximally Connect the vacuum hose and position the distal con...

Page 10: ...tex casting bag over the plaster cast and seal proximally Connect the vacuum hose and position the distal con nection of the casting bag on the nylon stockinette or the Perlon stockinette Switch on th...

Page 11: ...Mark the transitions between convex and concave shapes with horizontal lines Reduce the distal end of the model by 5 mm to 8 mm without changing the shape If there is overhang of soft tissue more redu...

Page 12: ...he test socket Objective To ensure a good fit a transparent ThermoLyn check socket is made It allows the fit to be evaluated since the col our of the skin and the flow properties of the liner are visi...

Page 13: ...d materials 743A11 plaster device 451F20 liner FitKit 616S132 sticky spots 453H1 1 lubricating cream or 453H26 SensiCare lotion waterproof marker check socket liner Mark at least three points on each...

Page 14: ...h a hot air blower and adapted The flow properties of the liner and thus the good fit of the prosthetic socket are verified by comparing the pos ition of points on the liner with the circles on the pr...

Page 15: ...l limb sock from the liner FitKit to increase the compression in the area The liner flow properties are correct in the proximal and medial areas The compression is insufficient in the distal area Posi...

Page 16: ...me even if the prosthetic socket is opaque The prosthetic socket is not worn Insert the liner into the socket Mark one line on the liner both medially and laterally on the course of the socket brim Th...

Page 17: ...The hardness of the functional ring affects the vacuum generation and the heel strike with the prosthesis Required tools and materials Harmony P3 unit functional rings 4X247 pre compression device Ott...

Page 18: ...stop in order to compress the functional ring com pletely Compress the functional ring from at least 3 minutes to at most 15 minutes Open the pre compression device and remove the func tional ring 3...

Page 19: ...Page 24 3 7 3 Trial fitting Donning the prosthesis 1 Don the liner onto the residual limb 2 For liners without textile cover Pull a residual limb sock on 3 Put on the prosthesis 4 Pull the residual l...

Page 20: ...ll the check socket with plaster to secure the vacuum pipe Remove the plaster model from the check socket Prepare the plaster model for the lamination process Reduce the plaster model according to the...

Page 21: ...Carry out the first lamination process Clamp the plaster model with the laminate into the transfer device Establish the connection between the prosthetic socket and the prosthesis components e g with...

Page 22: ...does not protect against friction between the sealing sleeve and socket brim Required tools and materials Laminated prosthetic socket hook and loop pads 623T1 cotton stockinette 623T3 Perlon stockinet...

Page 23: ...ional Attaching a cosmetic cover Objective A foam cover can be used as a cosmetic cover Correct attachment ensures the function of the Harmony P3 unit Required tools and materials Foam cover with 34 m...

Page 24: ...area 2 or 3 Connect the manometer directly to the suction con nection of the vacuum pump Activate the vacuum pump until vacuum of 500 hPa to 850 hPa is reached Check whether the vacuum is maintained T...

Page 25: ...ea of the prosthetic socket and the liner tightly without impeding knee flexion Plaster cast was produced with 2 phase technique The condyles do not have enough space during knee flex ion Make a new p...

Page 26: ...ut load The vacuum pulls the liner and the residual limb into a gap and creates a feeling of pressure in the user This feel ing is frequently misinterpreted as contact in the prosthetic sock et If the...

Page 27: ...b has lost volume and slipped deeper into the prosthetic socket This causes the head of the fibula to press against the lower edge of the recesses in the prosthetic sock et If the medial and lateral m...

Page 28: ...t compensate for volume loss Explain to the user how he or she can recognise volume losses from the markings on the liner and compensate for them using the liner FitKit Topic Flow properties of the li...

Page 29: ...eeve No lubricant in the proximal area of the liner This allows air to leak along the thigh and the non stick surface of the liner Apply a thin layer of lubricant to seal the area Sealing sleeve does...

Page 30: ...264 269 274 278 283 288 305 310 315 320 325 330 335 340 345 350 355 360 365 370 375 380 385 390 395 400 293 298 302 307 312 317 322 326 331 336 341 346 350 355 360 365 370 374 379 384 405 410 415 420...

Page 31: ...s a h t s a c r e t s a l p e h t f I nee flexion 15 a bulging eccentric or concave residual limb end pronounced invaginated scar tissue or excess size length 50 cm circumference 50 5 cm a 6Y416 Shap...

Page 32: ...Harmony System 32 Ottobock...

Page 33: ...Ottobock 33 Harmony System...

Page 34: ...Harmony System 34 Ottobock...

Page 35: ...info ottobock rs www ottobock rs Otto Bock Ortopedi ve Rehabilitasyon Tekni i Ltd ti Ali Dursun Bey Caddesi Lati Lokum Sokak Meri Sitesi B Block No 6 1 34387 Mecidiyek y stanbul Turkey T 90 212 356504...

Page 36: ...k has a certified Quality Management System in accordance with ISO 13485 Otto Bock HealthCare GmbH Max N der Stra e 15 37115 Duderstadt Germany T 49 5527 848 0 F 49 5527 72330 healthcare ottobock de w...

Reviews: