Joint Functions; Basic Function In Auto Mode - FIOR & GENTZ NEURO TRONIC Mode D'emploi

4. Joint Functions

The NEURO TRONIC system knee joint is an automatic joint and provides four joint functions:
1 basic function at delivery status in Auto mode
2 alternative function in Lock mode
3 alternative function in Free mode
4 alternative function in permanent unlocking
The system knee joint is preassembled in a physiological joint angle of 5°. It can be brought into a knee
flexion position of 0° or 10° by exchanging system components. To do so, exchange the 5° upper part for a
0° or 10° upper part.

4.1 Basic Function in Auto Mode

The controller of the orthosis has motion sensors which detect the movement and position of the lower leg.
Thus, the controller can lock/unlock the system joint in the corresponding gait phases.
Locking
When the patient is standing with the orthosis (fig. 1) or when he does not finish his step
in stance phase, the NEURO TRONIC system knee joint locks, as no movement is registered.
When walking, the system joint is locked from terminal swing to mid stance in direction of
flexion (fig. 2). The solenoid shuts off and the pressure spring pushes the plunger upwards,
which causes the locking pawl to mesh into the toothing of the toothed ring (fig. 3).
gesperrt
Terminal swing
locked
Terminal swing
If, contrary to expectations, weight is put on the leg with orthosis in the free moving phases, the system
joint does not lock.
Unlocking
Bloqueada
Terminal swing
The motion sensors register when the patient is walking with the orthosis. In
the gait phases from terminal stance to swing phase, the system knee joint
is unlocked and is therefore free moving (fig. 2). The solenoid turns on and
generates an electromagnetic field, which causes the plunger to retract mag-
netically against the spring force, while gravity causes the locking pawl to fall
downwards out of the toothing of the toothed ring (fig. 4).
The locking/unlocking moment can be fine adjusted with the multi-purpose
Verrouillée
device or the Expert app.
Terminal swing
26
NEURO TRONIC: GELENKRELEVANTE GANGPHASEN
gesperrt gesperrt
Initial contact Loading response
NEURO TRONIC: JOINT RELEVANT GAIT PHASES
locked locked
Initial contact Loading response
NEURO TRONIC: FASES DE LA MARCHA RELEVANTES PARA LA ARTICULACIÓN
Bloqueada Bloqueada
Initial contact Loading response
NEURO TRONIC: PHASES DE MARCHE ESSENTIELLES POUR L'ARTICULATION
Verrouillée Verrouillée
Initial contact Loading response
NEURO TRONIC: GEWRICHTSRELEVANTE GANGFASEN
gesperrt frei beweglich
Mid stance Terminal stance
locked free moving
Mid stance Terminal stance
Bloqueada De movimiento libre
Mid stance Terminal stance
Verrouillée À mouvement libre
Mid stance Terminal stance
IM STEHEN
DE
gesperrt
Stand
STANDING
GB
locked
frei beweglich frei beweglich
Stance
Pre swing Swing phase
DE PIE
ES
free moving free moving
Bloqueada
Pre swing Swing phase
Fase de apoyo
DEBOUT
FR
De movimiento libre De movimiento libre
Pre swing Swing phase
Verrouillée
Phase d'appui
BIJ STILSTAAN
NL
À mouvement libre À mouvement libre
Pre swing Swing phase
vergrendeld
Standfase
gesp
Terminal
lock
Terminal
fig. 1
Bloqu
Termina
fig. 2
Verro
Termin
fig. 3
vergre
Terminal