Flexible Orthosis Support Using Articulated Link Chain
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Solution Overview
Problem
Conventional hard-frame orthoses, such as knee-joint orthoses, suffer from rigid bridges that cannot adapt to the changing contour and circumference of the limb during movement, leading to instability and reduced comfort.
Innovation Solution
A flexible support band constructed from a flat link chain with identical components that overlap and are firmly coupled by a bearing pin, allowing for pivoting and limited bending, thereby providing mechanical strength and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rigid bridges are used to connect joint rails, then mechanical strength is improved, but adaptability to limb contour changes deteriorates
Solution Approach 1:
The rigid bridge is segmented into multiple rigid components connected by pivotable joints, allowing each segment to maintain structural strength while the overall structure adapts to contour changes through controlled articulation between segments
Solution Approach 2:
The bridge transitions from a static rigid structure to a dynamic articulated structure that can change its configuration in response to limb movement and contour changes, maintaining mechanical strength through the rigid segments while achieving adaptability through the pivotable connections
2Stability of the object's composition
If additional straps and anti-slip coatings are applied, then stability is improved, but wearing comfort deteriorates
Solution Approach 1:
The need for additional straps and anti-slip coatings is extracted by designing the bridge itself with contour-adapting capabilities through articulated segments, allowing the structure to maintain stability through its own geometric configuration rather than relying on external fastening elements
3Strength
If hard frame is firmly connected to limb, then supporting effect is improved, but comfort deteriorates due to protective posture
Solution Approach 1:
The hard frame connection transitions from a rigid fixed connection to a dynamic articulated connection that allows controlled movement and adaptation to limb contour changes, maintaining the supporting effect through the rigid segments while improving comfort by accommodating natural limb motion
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The flexible support band maintains mechanical strength while allowing for anatomical adaptation and movement, preventing migration and enhancing both support and comfort throughout various phases of movement.
Implementation Method 1
the flat components are pivotable to achieve a flexibility of the support element
Data Source
AI summary
The invention relates to a flexible support element for an orthosis, made of a link chain with several identical chain links, overlapping each other, firmly coupled in each case by a common bearing pin while limited by each other, which are pivotable to achieve a flexibility of the support element.