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P.9
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)
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 hydraulic cylinder functions,
providing cadence responsive swing control.
Fig. 2 Walking on a Level Floor
Hydraulic cylinder
Stance-Flexion
Hydraulic cylinder
Selective lock
(optional)
Stance-flexion rubber
6-bar linkage
(p-MRS system)
Fig. 1 Main Components
Stance-flexion stiffness
adjusting screw
Extension assist
spring adjusting
screw
Содержание Symphony NK-6
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