Nabtesco is an integrated control systems manifacturer contributing to
"Human Safety and Comfort"
||Hybrid Knee
As its name indicates, the Hybrid Knee is a new type of prosthetic Knee
joint that utilizes a combination of a hydraulic damper and Nabtesco'unique
MRS(Mechanism of Reaction Force Sensing) system to carry out satance phase
control, together with microprocessor-controlled pneumatic pressure for
swing phase control, enabling thejoint to respond flexibly to all kinds
of movement and changes in cadence.
One problem for wearers of prosthetic limbs is anxiety that the knee might
bend while the leg is upright or during heel strike when walking, or that
the limb may be slow to come into motion during the swing phase. The Hybrid
Knee eases this worry and improves the quality of life for wearers of prosthetic
limbs.
MRS System
The MRS system uses a linkage mechanism to measure the floor reaction force
and switch the hydraulic system on and off to activate the yielding function.
1:Heel Strike
As the heel strikes the graound, the MRS system closes valves in the hydraulic
resistance and prevent the knee from suddenly bending
2:Late Stance Phase
In the late stance phase, the MRS system opens valves in the hydaulic resistance
and enable the knee to bend smoothly.
3:Swing Phase
Duaring the swing phase,a microprocessor senses the gait speed and automatically
adjusts the pneumatic pressure, setting the prosthetic limb in motion appropriate
for the cadence.
4:Yielding
When descending stairs or slopes, the MRS system closes valves in the hydraulic
damper to increase hydraulic resistance. the activates the yielding function
and enables the wearer to walk down using alternate feet.
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Integrated hydraulic, pneumatic, and electronic control
Size 4.19MB Time4'19"
under construction
NI-C311
316KB
