Basic Construction And Operational Principle; Basic Construction; Operational Principle - Nabtesco NK-6 Symphony Manual De Instrucciones

2. Basic Construction and Operational Principle

2-1 Basic Construction

The NK-6 Symphony consists of a 6-bar
linkage which controls the stance phase and
a hydraulic cylinder which controls the swing
phase. The selective lock with which the
user can lock the knee by himself/herself
can be chosen at the user's option. (Model:
NK-6+L, NK-6SH+L)
Hydraulic cylinder
Stance-flexion rubber
Stance-flexion stiffness
adjusting screw
Fig. 1 Main Components

2-2 Operational Principle

The geometric self-locking system reliably
functions while the prosthesis is in contact
with the floor, thus preventing abrupt
buckling. When the prosthesis leaves the
floor, the
providing cadence responsive swing control.
Stance-Flexion
Fig. 2 Walking on a Level Floor
P.9
hydraulic cylinder
Hydraulic cylinder
EN – 7
Selective lock
(optional)
6-bar linkage
(p-MRS system)
Extension assist
spring adjusting
screw
functions,
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