Compression Force Magnifier for Orthopedic Bone Alignment
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Solution Overview
Problem
Current orthopedic fixation devices for Hal lux Abducto Valgus deformity, such as those using plates and screws, face challenges in achieving sufficient compression and stability without causing bone prominence or requiring complex osteotomy procedures, which can lead to complications like bunion formation and forefoot pain.
Innovation Solution
A compression force magnifier device with a ramped component and angled surfaces is integrated into a bone plate, allowing for enhanced compressive force application between bones through a screw mechanism, enabling precise alignment and stabilization without the need for extensive osteotomy, and featuring a removable design to avoid protruding screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional plates and screws are used for fixation, then bone stabilization is achieved, but sufficient compression force cannot be applied without causing bone prominence or complications
Solution Approach 1:
The compression force magnifier acts as an intermediary device between the screw and the bone plate. It translates the rotational force of the screw into amplified linear compression force on the bone, while the engaging surface with ramps controls the force transmission to prevent harmful bone prominence.
Solution Approach 2:
The device changes the mechanical parameters of force transmission by using ramped surfaces with specific angles. The ramps convert rotational screw movement into linear compression, amplifying the force while controlling the direction and magnitude to avoid harmful effects.
2Shape
If complex osteotomy procedures are performed to achieve alignment, then bone positioning is improved, but surgical complexity and risk of complications increase
Solution Approach 1:
The compression force magnifier enables preliminary compression and alignment adjustment before final screw fixation. The ramps allow the surgeon to pre-position the bone segments correctly and apply controlled compression, simplifying the overall surgical procedure and reducing the need for complex osteotomy techniques.
3Stability of the object's composition
If compression force is applied to achieve bone stabilization, then fixation stability is improved, but the device structure becomes more complex
Solution Approach 1:
The compression force magnifier merges multiple functions into a single integrated component: the engaging surface attaches to the bone plate, the ramps provide force amplification and directional control, and the hole accommodates the screw. This unified structure achieves stable fixation without requiring multiple separate components, thereby reducing overall device complexity.
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 device effectively enhances bone alignment and stabilization, reduces the risk of complications like bunion formation, and simplifies surgical procedures by providing controlled compressive force, improving patient outcomes and reducing surgical complexity.
Implementation Method 1
a ramped component above the engaging surface, the ramped component having a bottom surface adjacent the engaging surface and an angled upper surface
Data Source
AI summary
A compression force magnifier including a vertical axis through a body and a proximal surface of the body sloped at a predetermined angle relative to the vertical axis. A flat distal surface of the body is disposed opposite the proximal surface. A bore is disposed through the body from the proximal surface through the distal surface. The body is connected to an arm having a connection opening configured to allow connection of the body to a bone plate. The connection opening has a connection axis spaced from the vertical axis.