Dual Knee Pad Support for Contracture Patients
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Solution Overview
Problem
Typical knee supports in standing frames can cause dislocation of the knee joint in patients with flexion contracture, failing to provide adequate support for effective verticalization and preparation for walking without excessive strain.
Innovation Solution
A knee support system with two rotatable and pivotable knee pads attached to L-shaped brackets, allowing adjustable positioning and angle settings to accommodate the shape of the leg, providing dual-axis support and protection against varus or valgus deformities, and enabling straightening of the hip and knee joints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single knee pad is used in typical knee supports, then the structure is simple, but it causes dislocation of the knee joint in patients with flexion contracture
Solution Approach 1:
The single knee pad is divided into two separate knee pads (first knee pad and second knee pad) positioned at different locations. The first knee pad is attached to the first L-shaped bracket and the second knee pad is attached to the second L-shaped bracket, allowing each pad to independently support different aspects of the knee joint and prevent dislocation while maintaining joint stability.
2Adaptability or versatility
If a double knee pad system with adjustable positioning is implemented, then knee joint stability and adaptability improve, but device complexity increases
Solution Approach 1:
The knee pads are made dynamically adjustable through rotatable attachments to the L-shaped brackets and pivotable couplings. The first knee pad can rotate around the first axis and pivot relative to the first bracket, while the second knee pad can rotate around the second axis and pivot relative to the second bracket. This allows the knee support system to adapt to different leg shapes and positions while providing stable support.
3Ease of operation
If knee pads are made pivotable with slidable and pivotable couplings, then ease of adjustment improves, but device complexity increases
Solution Approach 1:
The coupling mechanism adds rotational and pivoting dimensions to the knee pad attachment. The first slidable and pivotable coupling allows the first knee pad to move along the first axis and pivot relative to the first bracket, while the second slidable and pivotable coupling allows the second knee pad to move along the second axis and pivot relative to the second bracket. This multi-dimensional adjustment capability enables easy adaptation to different leg configurations.
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A knee support for a standing frame, the knee support comprising a supporting plate (50) for attaching the knee support to the standing frame; a first knee pad (30) rotatably attached to a first L-shaped bracket (31) on its shorter arm; a second knee pad (40) rotatably attached to a second L-shaped bracket (41) on its shorter arm; wherein the longer arm of the first bracket (31) is pivotably attached to the supporting plate (50) near the first end thereof by means of a first holder (32), and the longer arm of the second bracket (41) is pivotably attached to the supporting plate (50) near its second end by means of a second holder (42), so that the first knee pad (30) is located above the second knee pad (40).