Block diagram of in vivo soft tissue test equipment
Soft tissue testing unit, composed of a step motor and a load cell
was tested thoroughly using various viscoelastic dummies before in vivo
tests on volunteers with trans tibial amputation.
The control box contains the power pack, data acquisiton card, voltage
to frequency converter and step motor driver card. The box communicates
with the computer by the USB port and is connected to the test unit by
shielded cables and connectors. During tests various mesurements were performed.
Raw data of cyclic loading on a viscoelastic dummy during development
of soft tissue testing equipment.
Hysterisis loop (blue loading, green unloading) on a viscoelastic dummy.
Result of a force relaxation experiment on a viscoelastic dummy.
Force response of a creep experiment on a viscoelastic dummy.
Displacement response of a creep experiment on a viscoelastic dummy.
First trans tibial amputee volunteer participating soft tissue experiments
at Gülhane Military Medical Academy.
Details of the experiment. The test probe is on a stand and rests against
the residual limb. It is secured by a velcro stap and a pad distributes
the pressue behind the residual limb.